EP3984429A1 - Aspirateur et procédé de fonctionnement d'un aspirateur - Google Patents

Aspirateur et procédé de fonctionnement d'un aspirateur Download PDF

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Publication number
EP3984429A1
EP3984429A1 EP21196197.4A EP21196197A EP3984429A1 EP 3984429 A1 EP3984429 A1 EP 3984429A1 EP 21196197 A EP21196197 A EP 21196197A EP 3984429 A1 EP3984429 A1 EP 3984429A1
Authority
EP
European Patent Office
Prior art keywords
cyclone separator
vacuum cleaner
dirt
air flow
volume flow
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.)
Pending
Application number
EP21196197.4A
Other languages
German (de)
English (en)
Inventor
Benjamin Rodax
Walter Assmann
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP3984429A1 publication Critical patent/EP3984429A1/fr
Pending legal-status Critical Current

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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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1608—Cyclonic chamber constructions
    • 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
    • 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
    • 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
    • A47L9/0072—Mechanical means for controlling the suction or for effecting pulsating action
    • 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
    • A47L9/165—Construction of inlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C11/00—Accessories, e.g. safety or control devices, not otherwise provided for, e.g. regulators, valves in inlet or overflow ducting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
    • B04C5/04—Tangential inlets

Definitions

  • the invention relates to a vacuum cleaner for cleaning and caring for floor surfaces with a fan for generating a negative pressure for picking up dirt by means of an air stream and a separating system for cleaning dirt from the air taken in, the separating system comprising a cyclone separator.
  • the invention also relates to a method for operating a vacuum cleaner.
  • vacuum cleaners are used to clean surfaces such as textile floor coverings and smooth floors.
  • energy classes are now specified for household vacuum cleaners in which significantly lower power consumption is permitted. This means that the aerodynamic performance values of the vacuum cleaner are reduced.
  • the performance of the fans and the pressure loss that occurs in the cyclone separators play an important role.
  • the dimensioning of vacuum cleaner fans follows a trend towards less power, which initially leads to lower volume flows available at the floor nozzle, so that the continuity relationship in the cyclone separators usually results in lower flow speeds.
  • the cyclone separators are designed for the lower flow speeds.
  • additional post-filters of the separating system usually have to be installed downstream of the cyclone separators. These after filters would either have to be cleaned or replaced by the user if these fine dust filters are clogged.
  • the cyclone separator can be geometrically designed in such a way that there is a high separation efficiency or a small separation grain size when separating dirt, in order to keep the post-filter load of dirt particles low.
  • the pressure loss or the hydraulic power loss increases at the same time as the filter performance increases or the separation particle size decreases.
  • this in turn requires more powerful blowers, which in turn leads to a conflict of objectives with regard to the power consumption for the energy classes.
  • the essential variables for the design of cyclone separators include the desired separation grain size and the expected volume flow range of the air flow through the cyclone separator.
  • desired separation grain size When vacuuming smooth floors, e.g. B. a wooden parquet, laminate or a PVC floor covering, a much higher volume flow is usually achieved or required than when vacuuming on textile floor covering, such as a carpet or carpet.
  • desired separating grain size for smooth floors usually differs only slightly from the requirements for carpeted floors.
  • the separating grain size for the cyclone separator is therefore usually set to the lower volume flow rate to be expected when vacuuming textile floor coverings.
  • the improved separation grain size when vacuuming on smooth floors leads to an unnecessarily improved separation performance of the cyclone separator and to higher hydraulic power loss.
  • the invention therefore faces the problem of specifying an improved vacuum cleaner and an improved method for operating a vacuum cleaner.
  • the pressure loss in high-performance cyclone separators should be reduced without unnecessarily loading any downstream filters.
  • a vacuum cleaner having the features of patent claim 1 and a method for operating a vacuum cleaner according to claim 9 .
  • the cyclone separator has at least one adjusting element that can be adjusted between at least two positions, with the adjusting element being designed to keep a separating grain size of the cyclone separator constant when separating dirt by adjusting between the at least two positions, the pressure loss can also with efficient cyclone separators can be reduced without unnecessarily loading a filter of the separating system downstream of the cyclone separator.
  • the separating grain size which indicates the size of the dirt particles separated from the air flow via the cyclone separator, can be kept constant at a level that is as constant as possible, regardless of a volume flow value of the air flow that is present and/or is set in the cyclone separator.
  • the basis of the invention is the effect that the separating grain size actually improves towards the separation of smaller dirt particles when the volume flow value of the air flow that occurs increases.
  • this improved separation should be avoided with the vacuum cleaner according to the invention, since otherwise the pressure losses and the hydraulic power loss of the cyclone separator would also occur would rise.
  • the cyclone separator can be operated energy-efficiently even with changing volume flows for the air flow through the cyclone separator, since the pressure losses can be reduced by adjusting the actuating element between the at least two positions.
  • the reduced pressure losses can be used to reduce the fan power required and/or to further increase the volume flow to improve dust pick-up.
  • the geometry of the cyclone separator can be changed between the at least two positions via the adjustable control element in order to adapt the separating grain size to the changing volume flow value of the air flow through the cyclone separator on the different floor coverings of the floor area to be cleaned.
  • blower power can be reduced by approximately 30 to 40% with the same performance, ie with the same volume flow and the same filter performance. This effect can be used to reduce the space requirement, weight or costs of the blower, to improve dust absorption by increasing the volume flow and/or to reduce energy consumption or to reduce the battery capacity required for battery-powered vacuum cleaners or robotic vacuum cleaners.
  • the vacuum cleaner has a blower for generating a negative pressure, through which a floor nozzle guided over a floor surface to be cleaned picks up dust and dirt from the floor surface.
  • a blower for generating a negative pressure
  • the user moves the floor nozzle back and forth in the working direction by means of pushing and pulling movements.
  • the floor nozzle slides over the floor surface to be cleaned.
  • the underside of the floor nozzle slides over the carpet, while in the case of smooth floors the underside floats over these floor surfaces at a distance, possibly by means of spacer bristles.
  • the user can, for example, manipulate a vacuum cleaner handle connected to the suction pipe.
  • the suction mouth of the floor nozzle is elongate and runs essentially transversely to the working direction.
  • Elongated in this context means that the preferably substantially rectangular suction mouth has a greater length transverse to the processing direction than width in the processing direction.
  • the suction mouth is preferably between 20 and 30 cm long transversely to the processing direction.
  • the vacuum cleaner can also be designed as an independently moving vacuum cleaner, in particular a vacuum robot, so that the working direction of the floor nozzle corresponds to the direction of travel of the independently moving vacuum cleaner.
  • the adjusting element is designed to change an inflow cross section for the air flow at the cyclone separator by adjustment between the at least two positions.
  • the adjusting element is designed to change other geometries of the cyclone separator via the adjusting element in order to influence the separating particle size given a present and/or emerging volume flow value of the air flow.
  • these include, for example, the dip tube diameter, other geometry parameters of the cyclone space and, if necessary, geometries and mesh sizes of integrated screens. Changes in radii or diameters can be implemented, e.g. with the help of elastic or movable elements.
  • the risk of contamination from jammed particles can be reduced by flow cross sections that widen in the direction of flow.
  • an embodiment is particularly preferred which provides that the actuating element is designed as a flap in a flap space through which the air flow flows upstream of the cyclone separator in the inflow region.
  • the actuating element is designed as a flap in a flap space through which the air flow flows upstream of the cyclone separator in the inflow region.
  • a simple to set up and easily adjustable control element is provided in the inflow area of the cyclone separator.
  • the at least two positions of the actuating element can be set particularly easily and securely. This makes it possible to influence the separating grain size of the cyclone separator simply by flapping the flap in the flap space through which flow occurs.
  • a particularly advantageous embodiment of the invention relates to the fact that the flap is designed to change the width of an inlet slot formed in the flap space and/or the height of an inlet slot formed in the flap space, through which the air flow flows into the cyclone separator arranged in the air flow downstream of the flap space .
  • the separating grain size can be changed very easily and independently of the existing and/or occurring volume flow value of the air flow.
  • a particularly advantageous embodiment of the invention provides that the flap is designed to set a width of the inlet slot between 10 and 30 mm in order to reduce the separation grain size of the cyclone separator to dirt particles with a diameter size between 1 and 3 at a volume flow value of 10 to 30 liters per second set ⁇ m.
  • the flap is designed to set a width of the inlet slot between 10 and 30 mm in order to reduce the separation grain size of the cyclone separator to dirt particles with a diameter size between 1 and 3 at a volume flow value of 10 to 30 liters per second set ⁇ m.
  • An advantageous embodiment of the invention provides that the actuating element can be adjusted between the at least two positions against a spring force of a return spring.
  • a simple control loop can be implemented with the help of the return spring.
  • the volume flow can shift the actuating element from a first position into a second position against the spring force of the return spring.
  • a reduction in the separation grain size due to the increasing volume flow is automatically counteracted by a geometric change in the cyclone separator by moving the actuating element.
  • the spring force moves the actuating element back into the first position of the actuating element in order to automatically counteract an increase in the separation grain size due to the decreasing volume flow.
  • An embodiment is particularly advantageous which provides that the actuating element can be adjusted between the at least two positions via a processor-controlled actuator.
  • a processor-controlled actuator With a processor-controlled actuator, the separating grain size of the cyclone separator when separating dirt can be adjusted very easily and as required, independently of the existing and/or occurring volume flow value of the air flow.
  • the desired separating grain size can be easily set independently of the volume flow using the control element of the cyclone separator. This enables the separation grain size to be optimized with regard to the condition of a filter downstream of the cyclone separator.
  • the actuator can be easily adjusted between at least two positions in a processor-controlled manner via the actuator in order to set the separating grain size of the cyclone separator.
  • an advantageous embodiment of the invention provides that the actuating element can be adjusted between the at least two positions depending on the nature of the floor surface to be cleaned.
  • the separating grain size of the cyclone separator can also be kept constant on different floor surfaces in order to operate the vacuum cleaner efficiently on smooth floors and carpeted floors.
  • the condition of the floor surface can be detected by a sensor, the sensor data from which is incorporated into the processor control.
  • An advantageous embodiment of the method provides that when the second volume flow value is higher than the first volume flow value, an inflow cross section for the air flow at the cyclone separator is increased by adjusting the actuating element from the first position to a second position in order to keep the defined separation grain size constant.
  • Increasing the inflow cross-section for the air flow can counteract a reduction in the separation grain size in the cyclone separator as the volume flow increases. With the enlargement of the inflow cross section through the adjustment of the adjusting element, it is thus possible to prevent smaller dirt particles from being separated out of the air flow via the cyclone separator than intended in an energy-efficient operation. This reduces the pressure losses and reduces the hydraulic power loss.
  • a preferred development of the method provides that when the second volume flow value is lower than the first volume flow value, an inflow cross section for the air flow on the cyclone separator is reduced by moving the actuating element from the first position to a second position, in order to keep the defined separation grain size constant keep.
  • FIG 1 denoted by the reference numeral 1 is a vacuum cleaner 1 with floor nozzle 11 is shown purely schematically.
  • the representation according to figure 1 shows a vacuum cleaner 1 according to the invention with a floor nozzle 11 connected to the vacuum cleaner 1.
  • the vacuum cleaner 1 shown in the exemplary embodiment is a so-called canister vacuum cleaner 1.
  • the floor nozzle 11 is connected here via its connecting piece 12 to a preferably telescopic suction pipe 13 .
  • the floor nozzle 11 has its own housing 9 that is independent of the vacuum cleaner housing 14 in the exemplary embodiment shown.
  • the telescoping suction tube 13 merges into a handle 15 to which a suction hose 16 is connected, which is connected to the vacuum cleaner housing 14 .
  • a fan (not shown) of the vacuum cleaner 1 integrated in the vacuum cleaner housing 14 is operated with electricity via an electrical connection cable 17 in order to generate a negative pressure.
  • a negative pressure By means of this negative pressure, dirt and grime are picked up from the floor surface 30 to be cleaned by an air flow via the suction mouth of the floor nozzle 11 and transported away via the suction pipe 13 and the suction hose 16 into the housing 14 of the vacuum cleaner 1 .
  • a separating system 2 ( 2 ) which includes a cyclone separator 3 ( 2 ) includes.
  • a negative pressure is generated.
  • the air flow generated by the negative pressure is in the separating system 2 ( 2 ) freed from dirt and grime and led out of the vacuum cleaner 1 via an exhaust air grille 18 .
  • a user interface in the form of a foot switch 19 This footswitch 19 includes switches large enough for a user to foot.
  • the pedal circuit 19 usually also has a switch for actuating the automatic winding mechanism (not shown) for the connection cable 17 that is integrated in the vacuum cleaner housing 14 .
  • a user interface in the form of a manual switch 20 with which the functions of the vacuum cleaner 1 can be activated.
  • the vacuum cleaner 1 can be switched on and off via the manual switch 20 and power levels of the fan (not shown) can be selected.
  • a user of the vacuum cleaner 1 can grasp it by the handle 15 and thus push the floor nozzle 11 back and forth in a pushing and pulling movement in the working direction 31 marked as a double arrow in order to clean the floor surface 30 .
  • the floor nozzle 11 slides over the floor surface 30 to be cleaned.
  • the underside of the floor nozzle 11 slides over the floor surface 30, while the underside floats over these floor surfaces 30 at a distance from hard floors, possibly by spacer bristles.
  • the figure 2 shows schematically a vacuum cleaner housing 14 ( 1 ) Fixed in the air stream arranged Zylonabscheider 3 of the separation system 2 in a side view.
  • the one on the floor nozzle ( 1 ) Air flow Q loaded with dirt particles flows here through the channel-like inflow area 6 into the cyclone chamber 21 of the cyclone separator 3.
  • a part of the dirt particles (not shown) is separated from the air flow Q by centrifugal forces and the deflection of the air flow Q and transported out through the opening 22.
  • the cleaned air flow Q leaves the cyclone space 21 of the cyclone separator 3 through the immersion tube 23, which protrudes into the cyclone space 21 from above.
  • the cleaned air stream Q then flows through the exhaust air grille 18 ( 1 ) from the vacuum cleaner 1 ( 1 ).
  • a post-filter (not shown) of the separating system 2 can also be connected downstream of the cyclone separator 3 in the air flow Q in order to filter the last, fine dirt particles from the air flow Q before it enters the vacuum cleaner housing 14 ( 1 ) via the exhaust air grille 18 ( 1 ) leaves.
  • figure 3 is the cyclone separator 3 of the separation system 3 according to figure 2 shown in a first embodiment from above. It can be seen that the air flow Q is introduced via the channel-like inflow area 6 into the cyclone chamber 21 of the cyclone separator 3 and here rotates around the immersion tube 23 which is arranged centrally in the rotationally symmetrical cyclone chamber 21 .
  • the Zylonabscheider 3 has an actuator 4, which in this first Execution is designed as a simple flap 4. This flap 4 can be pivoted on the axis 24 and is preferably steplessly adjustable between two positions, with figure 3 a first position A is shown.
  • the figure 4 shows the cyclone separator 3 according to FIG figure 3 , whereby here the flap 4 compared to the illustration in figure 3 is adjusted to a second position B.
  • the flap 4 is arranged upstream of the cyclone separator 3 in a flap space 7 through which the air stream Q flows in the inflow region 6 .
  • the separating grain size of the cyclone separator 3 can be kept constant when separating dirt, regardless of a present and/or occurring volume flow value of the air flow Q.
  • the adjustable flap 4 simply changes the width B', B" of the inlet slot 8 formed in the flap space 7.
  • the air flow Q flows through this inlet slot 8 into the cyclone space 21 arranged in the air flow Q downstream of the flap space 7.
  • Changing the width B' , B" of the inlet slot 8 causes a change in the separation grain size of the cyclone separator 3.
  • the separation grain size increases with increasing slot width B', B".
  • the separating grain size is usually smaller without a geometric change in the cyclone separator 3.
  • the slot width B', B" of the inlet slot 8 in the cyclone separator 3 can be increased via the adjustable control element 4. This in turn is accompanied by a reduction in the pressure loss, which Reduction of the fan power required and/or to further increase the volume flow to improve dust absorption.
  • a setting range between 10 and 30 mm for the width B', B" of the inlet slot 8 a wide range of 10 to 30 liters can be used per second to volume flow values in order to keep the fluctuations in the separation grain size constant in a small range between 1 and 3 ⁇ m by adjusting the adjusting element 4.
  • FIG 5 is the cyclone separator 3 of the separation system according to figure 3 and 4 shown in a second embodiment from above.
  • the actuating element 4 is held in place against the spring force of a return spring 9 between the two in figure 5 and 6 shown positions A, B is adjustable.
  • the separating grain size of the cyclone separator 3 can be kept constant when separating dirt, regardless of a present and/or occurring volume flow value of the air flow Q.
  • the adjustable flap 4 simply changes the width B', B" of the inlet slot 8 formed in the flap chamber 7.
  • a simple control circuit for the separation grain size can be implemented with the help of the return spring 9.
  • the flap 4 is opened when the blower is switched off or at low volume flow values for the Air flow Q through the cyclone separator 3 from the return spring 9 into an in figure 5 shown rest position A pressed. In this position, the slot width B" is the smallest. With increasing volume flow, the flow pushes the flap 4 in the direction of the in figure 6 shown position B and thus widens the slot width B ', the more, the higher the volume flow value for the air flow Q through the cyclone separator 3 is. A reduction in the separation grain size due to the increasing volume flow is automatically counteracted by the expansion of the slot width B', B".
  • the figure 7 shows the cyclone separator 3 of the separation system according to FIG figure 3 and 4 in a third embodiment from above.
  • the actuating element 4, which is also designed as a flap 4 here, can be adjusted between the at least two positions A, B via a processor-controlled actuator 10.
  • the processor-controlled activation of the actuator 10 enables a needs-based adjustment of the separation grain size independently of the present and/or occurring volume flow value of the air flow Q.
  • the floor nozzle can also be designed as part of a self-propelled vacuum cleaner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
EP21196197.4A 2020-10-19 2021-09-13 Aspirateur et procédé de fonctionnement d'un aspirateur Pending EP3984429A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020127421.1A DE102020127421A1 (de) 2020-10-19 2020-10-19 Staubsauger und Verfahren zum Betrieb eines Staubsaugers

Publications (1)

Publication Number Publication Date
EP3984429A1 true EP3984429A1 (fr) 2022-04-20

Family

ID=77726403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21196197.4A Pending EP3984429A1 (fr) 2020-10-19 2021-09-13 Aspirateur et procédé de fonctionnement d'un aspirateur

Country Status (3)

Country Link
EP (1) EP3984429A1 (fr)
CN (1) CN114376446B (fr)
DE (1) DE102020127421A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4136935A1 (de) * 1991-11-11 1993-05-13 Rheinische Braunkohlenw Ag Zyklonabscheider
EP0918481A1 (fr) * 1996-07-15 1999-06-02 Notetry Limited Appareil de separation des particules d'un courant de fluide et clapet d'introduction d'un fluide antidepression dans un courant principal de fluide
DE10129596A1 (de) * 2000-07-21 2002-01-31 Vorwerk Co Interholding Staubsauger
US20100325834A1 (en) * 2007-10-29 2010-12-30 Miefalk Haakan Cyclone-like separator for a vacuum cleaner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011051683A1 (de) * 2011-07-08 2013-01-10 Miele & Cie. Kg Verfahren zum Betreiben eines Staubsaugers mit einem Zyklonabscheider und Staubsauger mit einem Zyklonabscheider
US10022027B2 (en) * 2014-12-17 2018-07-17 Omachron Intellectual Property Inc. All in the head surface cleaning apparatus
CN209238196U (zh) * 2018-11-16 2019-08-13 新疆工程学院 流速恒定入口装置和旋风分离器
CN110558895A (zh) * 2019-09-11 2019-12-13 珠海格力电器股份有限公司 吸尘器及旋风分离装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4136935A1 (de) * 1991-11-11 1993-05-13 Rheinische Braunkohlenw Ag Zyklonabscheider
EP0918481A1 (fr) * 1996-07-15 1999-06-02 Notetry Limited Appareil de separation des particules d'un courant de fluide et clapet d'introduction d'un fluide antidepression dans un courant principal de fluide
DE10129596A1 (de) * 2000-07-21 2002-01-31 Vorwerk Co Interholding Staubsauger
US20100325834A1 (en) * 2007-10-29 2010-12-30 Miefalk Haakan Cyclone-like separator for a vacuum cleaner

Also Published As

Publication number Publication date
DE102020127421A1 (de) 2022-04-21
CN114376446A (zh) 2022-04-22
CN114376446B (zh) 2024-04-23

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