EP4255271B1 - Staubsauger - Google Patents

Staubsauger Download PDF

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Publication number
EP4255271B1
EP4255271B1 EP20820862.9A EP20820862A EP4255271B1 EP 4255271 B1 EP4255271 B1 EP 4255271B1 EP 20820862 A EP20820862 A EP 20820862A EP 4255271 B1 EP4255271 B1 EP 4255271B1
Authority
EP
European Patent Office
Prior art keywords
vacuum cleaner
motor
fan unit
conducting path
air
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.)
Active
Application number
EP20820862.9A
Other languages
English (en)
French (fr)
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EP4255271A1 (de
Inventor
Stefan Jonsson
Filip AUSTAD
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.)
Electrolux AB
Original Assignee
Electrolux AB
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Publication date
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Publication of EP4255271A1 publication Critical patent/EP4255271A1/de
Application granted granted Critical
Publication of EP4255271B1 publication Critical patent/EP4255271B1/de
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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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/24—Hand-supported 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
    • A47L9/22—Mountings for motor fan assemblies
    • 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
    • A47L9/32—Handles
    • A47L9/322—Handles for hand-supported suction cleaners

Definitions

  • the present disclosure relates to a vacuum cleaner comprising a motor/fan unit configured to generate an airflow in an air conducting path arranged downstream of the motor/fan unit.
  • a vacuum cleaner is an apparatus that uses a motor/fan unit to create a partial vacuum in order to obtain an air flow for sucking up dust and dirt from surfaces, such as floors, carpets, furniture, curtains, and the like.
  • the motor/fan unit usually comprises a centrifugal fan and an electric motor configured to power, i.e. rotate, the centrifugal fan.
  • Several different types of vacuum cleaners exit including upright/stick type vacuum cleaners, robotic vacuum cleaners, canister vacuum cleaners, and hand-held vacuum cleaners, such as pistol grip hand-held cleaners, and the like.
  • Document US2019/0365174 A1 discloses a surface cleaning apparatus having an air flow path, a filter housing, and a filter member in the filter housing. Parts of the air flow path is arranged downstream of the motor/fan unit.
  • Noise is problematic because it may disturb and annoy the user as well as people and animals in the vicinity of the vacuum cleaner during use thereof.
  • One efficient way to supress noise is to use a long air conducting path downstream of the motor/fan unit.
  • vacuum cleaners having a slim design it is difficult to accommodate such a long air conducting path.
  • a hand-held vacuum cleaner comprising a motor/fan unit configured to generate an airflow having a first direction at an inlet of the motor/fan unit and a first air conducting path arranged downstream of the motor/fan unit.
  • the first air conducting path is configured to direct air to flow in a direction opposite to the first direction.
  • the first air conducting path is arranged radially outside of the motor/fan unit along more than 40% of the length of the motor/fan unit measured in the first direction.
  • a hand-held vacuum cleaner is provided allowing for a long air conducting path downstream of the motor/fan unit while conditions are provided for a slim design of the vacuum cleaner.
  • the hand-held vacuum cleaner comprises the first air conducting path arranged radially outside of the motor/fan unit along more than 40% of the length of the motor/fan unit which is configured to direct air to flow in a direction opposite to the first direction. Accordingly, due to these features, the available space inside the hand-held vacuum cleaner is utilized in an efficient manner thereby allowing for a long air conducting path downstream of the motor/fan unit. Since a long air conducting path is allowed for downstream of the motor/fan unit, conditions are provided for a high level of noise attenuation.
  • the first air conducting path is configured to direct air to flow in a direction opposite to the first direction, conditions are provided for a high level of noise attenuation because noise may be deflected and reflected by surfaces of the first air conducting path in an efficient manner so as to attenuate noise.
  • the first air conducting path may per se provide attenuation of noise generated by the motor/fan unit.
  • the first air conducting path may provide some cooling of the motor/fan unit. Thereby, conditions are provided for operating the motor/fan unit at higher power levels without overheating the motor/fan unit.
  • a hand-held vacuum cleaner is provided overcoming, or at least alleviating, at least some of the above-mentioned problems and drawbacks. As a result, the above-mentioned object is achieved.
  • the first air conducting path is arranged radially outside of the motor/fan unit along more than 80% of the length of the motor/fan unit.
  • a hand-held vacuum cleaner is provided allowing for an even longer air conducting path downstream of the motor/fan unit while conditions are provided for a slim design of the hand-held vacuum cleaner. Since an even longer air conducting path is allowed for downstream of the motor/fan unit, conditions are provided for an even higher level of noise attenuation.
  • the first air conducting path is arranged radially outside of the motor/fan unit along more than 80% of the length of the motor/fan unit, the first air conducting path per se may provide a greater attenuation of noise generated by the motor/fan unit.
  • the first air conducting path is arranged radially outside of the motor/fan unit along more than 80% of the length of the motor/fan unit, the first air conducting path may provide greater cooling efficiency of the motor/fan unit. Thereby, conditions are provided for operating the motor/fan unit at even higher power levels without overheating the motor/fan unit.
  • the first air conducting path is arranged radially outside of the motor/fan unit along the entire length of the motor/fan unit.
  • a hand-held vacuum cleaner is provided allowing for an even longer air conducting path downstream of the motor/fan unit while conditions are provided for a slim design of the hand-held vacuum cleaner. Since an even longer air conducting path is allowed for downstream of the motor/fan unit, conditions are provided for an even higher level of noise attenuation.
  • the first air conducting path is arranged radially outside of the motor/fan unit along the entire length of the motor/fan unit, the first air conducting path per se may provide a greater attenuation of noise generated by the motor/fan unit.
  • the first air conducting path may provide greater cooling efficiency of the motor/fan unit. Thereby, conditions are provided for operating the motor/fan unit at even higher power levels without overheating the motor/fan unit.
  • the first air conducting path at least partially encloses the motor/fan unit. Since the first air conducting path at least partially encloses the motor/fan unit, the first air conducting path per se may provide a greater attenuation of noise generated by the motor/fan unit. Moreover, a large cross sectional area of the first air conducting path is allowed for while providing conditions for a slim and compact hand-held vacuum cleaner. Furthermore, the first air conducting path may provide greater cooling efficiency of the motor/fan unit. Thereby, conditions are provided for operating the motor/fan unit at even higher power levels without overheating the motor/fan unit.
  • the first air conducting path encloses more than 50% of the circumference of the motor/fan unit. Thereby, a great attenuation of noise generated by the motor/fan unit can be ensured. Moreover, the first air conducting path may provide greater cooling efficiency of the motor/fan unit. Thereby, conditions are provided for operating the motor/fan unit at even higher power levels without overheating the motor/fan unit.
  • the first air conducting path comprises an air diverting portion configured to change the airflow direction approximately 180 degrees, and wherein the air diverting portion is arranged directly downstream of the motor/fan unit.
  • the air diverting portion is arranged directly downstream of the motor/fan unit.
  • the hand-held vacuum cleaner comprises a handle assembly and a second air conducting path arranged downstream of the first air conducting path, and wherein the second air conducting path extends through a portion of the handle assembly.
  • the handle assembly comprises an elongated handle unit configured to be gripped by a user during operation of the hand-held vacuum cleaner and a second elongated unit arranged at a distance from the elongated handle unit, and wherein the second air conducting path extends through at least a portion of the second elongated unit.
  • a hand-held vacuum cleaner is provided in which the elongated handle unit is not significantly heated during operation of the hand-held vacuum cleaner.
  • the hand-held vacuum cleaner comprises an air outlet arranged on the second elongated unit.
  • an air outlet arranged on the second elongated unit.
  • the hand-held vacuum cleaner comprises a battery assembly configured to supply electricity to the motor/fan unit.
  • a battery powered hand-held vacuum cleaner is provided having conditions for slim and compact design and having conditions for a high level of noise attenuation.
  • a user friendly hand-held vacuum cleaner is provided being more comfortable to use.
  • the battery assembly is supported relative to a main body of the hand-held vacuum cleaner via the elongated handle unit and the second elongated unit.
  • a rigid and durable hand-held vacuum cleaner can be provided in which the second elongated unit can be utilized for accommodating at least a portion of the second air conducting path.
  • conditions are provided for a long air conducting path downstream of the motor/fan unit so as to provide an efficient noise attenuation.
  • the hand-held vacuum cleaner comprises an air outlet comprising at least a portion being arranged in front of the motor/fan unit seen along the first direction.
  • an air outlet comprising at least a portion being arranged in front of the motor/fan unit seen along the first direction.
  • the hand-held vacuum cleaner comprises an air outlet being a perforated section of a body component of the hand-held vacuum cleaner.
  • an air outlet is provided having conditions for generating lower flow velocities through the air outlet as compared to a traditional air outlet.
  • a more user friendly hand-held vacuum cleaner can be provided being more comfortable to use.
  • the perforated section comprises a number of small-sized through-holes through the body component, and wherein a total cross sectional area of the number of small-sized through-holes is equal to, or greater than, the cross sectional area of the first air conducting path.
  • an air outlet is provided having conditions for generating lower flow velocities through the air outlet while providing a low flow resistance through the air outlet.
  • a high operational efficiency of the hand-held vacuum cleaner can be ensured.
  • the hand-held vacuum cleaner comprises power electronics configured to control operation of the motor/fan unit, and wherein the hand-held vacuum cleaner comprises an air channel configured to direct a partial flow of air past the power electronics to a secondary air outlet of the hand-held vacuum cleaner to cool the power electronics.
  • the hand-held vacuum cleaner comprises an air channel configured to direct a partial flow of air past the power electronics to a secondary air outlet of the hand-held vacuum cleaner to cool the power electronics.
  • the hand-held vacuum cleaner comprises a main body which accommodates at least the motor/fan unit and the first air conducting path, and wherein the air channel is arranged on the main body.
  • cooling of the power electronics can be obtained in a simple and cost-efficient manner while conditions are provided for a slim and compact design of the hand-held vacuum cleaner.
  • the air channel is arranged behind the motor/fan unit seen along the first direction.
  • cooling of the power electronics can be obtained in a simple and cost-efficient manner while conditions are provided for a slim and compact design of the hand-held vacuum cleaner.
  • the secondary air outlet is arranged on the main body at a location behind the motor/fan unit seen along the first direction.
  • the hand-held vacuum cleaner comprises a second air conducting path arranged downstream of the first air conducting path, wherein walls of at least one of the first and second air conducting paths are covered by a noise attenuating material.
  • a hand-held vacuum cleaner is provided having conditions for an even greater attenuation of noise.
  • the hand-held vacuum cleaner comprises a perforated cylindrical body arranged around the motor/fan unit, and wherein the first air conducting path extends at least partially through holes of the perforated body.
  • the first air conducting path extends at least partially through holes of the perforated body.
  • the hand-held vacuum cleaner is a small-sized hand-held vacuum cleaner.
  • a small-sized hand-held vacuum cleaner is provided allowing for a long air conducting path downstream of the motor/fan unit while conditions are provided for a slim design of the vacuum cleaner.
  • the small-sized hand-held vacuum cleaner comprises the first air conducting path arranged radially outside of the motor/fan unit along a significant portion of the motor/fan unit which is configured to direct air to flow in a direction opposite to the first direction. Accordingly, due to these features, the available space inside the small-sized hand-held vacuum cleaner is utilized in an efficient manner thereby allowing for a long air conducting path downstream of the motor/fan unit. As a result, conditions are provided for a high level of noise attenuation in the small-sized hand-held vacuum cleaner.
  • Fig. 1 illustrates a cross section of a hand-held vacuum cleaner 1 according to some embodiments.
  • the vacuum cleaner 1 is a so called pistol grip handheld vacuum cleaner which can be operated using one hand.
  • the feature "hand-held”, as used herein, means that the vacuum cleaner 1 is configured to be operated and supported using one or two hands of a user.
  • the hand-held vacuum cleaner 1 is in some places herein referred to as "the vacuum cleaner 1".
  • the vacuum cleaner 1 comprises a suction inlet 3 and an air outlet 5. Moreover, the vacuum cleaner 1 comprises a motor/fan unit 7 configured to generate an airflow from the suction inlet 3 to the air outlet 5. During operation of the motor/fan unit 7, a partial vacuum is generated at the suction inlet 3 which can be used to collect dust.
  • the vacuum cleaner 1 comprises a dust separator 6 between the suction inlet 3 and the motor/fan unit 7. According to the illustrated embodiments, the dust separator 6 comprises a cyclone separator. As an alternative, or in addition, the vacuum cleaner 1 may comprise another type of dust separator, such as a dust bag, or the like.
  • the vacuum cleaner 1 comprises a filter 8 arranged between the dust separator 6 and the motor/fan unit 7.
  • the filter 8 may comprise a foam material and may be configured to further separate fine particles from the air flowing towards an inlet 7' of the motor/fan unit 7.
  • the motor/fan unit 7 is configured to generate an airflow having a first direction d1 at the inlet 7' of the motor/fan unit 7.
  • Fig. 2 illustrates an enlarged view of the motor/fan unit 7 of the vacuum cleaner 1 illustrated in Fig. 1 .
  • the motor/fan unit 7 comprises a fan 14 and a motor 16.
  • the motor 16 is configured to rotate the fan 14 around a rotation axis Ax via a shaft 18.
  • the shaft 18 is schematically indicated in dashed lines in Fig. 2 .
  • the motor 16 is an electric motor.
  • the motor 16 may be a brushless electric motor.
  • the motor 16 may be a brushed motor.
  • the motor 16 comprises a rotor 23 connected to the fan 14 via the shaft 18.
  • the rotor 23, the shaft 18, and the fan 14 are concentrically arranged meaning that they all rotate around the rotation axis Ax during operation of the motor/fan unit 7.
  • the fan 14 may be a radial fan comprising a number of guide wanes configured to generate an airflow by forcing air in radial directions of the fan 14 during rotation of the fan 14.
  • the motor/fan unit 7 comprises a diffuser 24.
  • the diffusor 24 may comprise a number of stator blades configured to straighten out the airflow downstream of the fan 14 and thereby increase the operational efficiency of the motor/fan unit 7.
  • the motor/fan unit 7 is configured to generate an airflow having a first direction d1 at the inlet 7' of the motor/fan unit 7.
  • the first direction d1 is parallel to the rotation axis Ax of the fan 14, and consequently also parallel to the rotation axis Ax of the shaft 18 and the rotation axis Ax of the rotor 23 of the motor 16.
  • the first direction d1 may also be referred to as an inlet direction d1 of air flowing into the motor/fan unit 7.
  • the first direction d1 may correspond to an average air flow direction through the motor/fan unit 7 and may also be referred to as an operational air flow direction of the motor/fan unit 7.
  • the airflow through the motor/fan unit 7 is schematically indicated in dotted lines.
  • the air is flowing into the fan 14 via the inlet 7' of the motor/fan unit 7.
  • the fan 14 forces the air in radial directions of the fan 14, i.e. in directions perpendicular to the first direction d1.
  • the air is then guided through the motor 16 via the diffusor 24.
  • the air thus flows through the motor 16 and thereby cools the motor 16.
  • the air may flow through the rotor 23 of the motor 16 as well through a stator 26 of the motor 16.
  • the motor/fan unit 7 comprises an outlet 7" configured to direct air to flow out of the outlet 7" in directions substantially coinciding with the first direction d1.
  • the motor/fan unit 7 may comprise one or more outlets configured to direct air to flow out of the outlet in directions differing from the first direction d1, such that in directions substantially perpendicular to the first direction d1, i.e. in substantially radial directions of the motor/fan unit 7.
  • Such one or more outlets may each be referred to as a radial outlet.
  • the vacuum cleaner 1 comprises a first air conducting path 11.
  • the first air conducting path 11 is arranged downstream of the motor/fan unit 7.
  • the vacuum cleaner 1 comprises a main body 9 which accommodates the motor/fan unit 7 and the first air conducting path 11.
  • the first air conducting path 11 is configured to direct air to flow in a direction d2 opposite to the first direction d1. That is, as can be seen in Fig. 1 and in Fig. 2 , the first air conducting path 11 comprises an air diverting portion 11' configured to change the airflow direction approximately 180 degrees, i.e.
  • the air diverting portion 11' is arranged directly downstream of the motor/fan unit 7, i.e. directly downstream of the outlet 7" of the motor/fan unit 7.
  • the motor/fan unit 7 may comprise at least part of the air diverting portion 11'.
  • the first air conducting path 11 is arranged radially outside of the motor/fan unit 7 along the entire length L of the motor/fan unit 7 measured along the first direction d1.
  • the first air conducting path 11 extends radially outside of the motor/fan unit 7 a distance corresponding to the entire length L of the motor/fan unit 7 measured in the first direction d1.
  • the first air conducting path 11 may be arranged radially outside of the motor/fan unit 7 along more than 40%, or more than 80%, of the length L of the motor/fan unit 7 measured in the first direction d1.
  • a vacuum cleaner 1 is provided allowing for a long air conducting path 11, 12 downstream of the motor/fan unit 7 while conditions are provided for a slim design of the vacuum cleaner 1. Since a long air conducting path 11, 12 is allowed for downstream of the motor/fan unit 7, conditions are provided for an efficient attenuation of noise, as is further explained herein.
  • the first air conducting path 11 encloses almost the entire circumference of the motor/fan unit 7.
  • the first air conducting path 11 may enclose more than 20%, or more than 50%, of the circumference of the motor/fan unit 7.
  • the first air conducting path 11 may provide cooling of the motor/fan unit 7.
  • a large cross sectional area of the first air conducting path 11 is allowed for while providing conditions for a slim and compact vacuum cleaner 1.
  • the vacuum cleaner 1 comprises a handle assembly 20.
  • the handle assembly 20 comprises an elongated handle unit 21.
  • the elongated handle unit 21 is configured to be gripped by a user in an intended grip direction during operation of the vacuum cleaner 1.
  • the intended grip direction of the elongated handle unit 21 is substantially opposite to the first direction d1.
  • the handle assembly 20 further comprises a second elongated unit 22 arranged at a distance from the elongated handle unit 21.
  • the second elongated unit 22 is substantially parallel to the elongated handle unit 21.
  • the handle assembly 20 is arranged such that the second elongated unit 22 faces fingers of a user when the user grips the elongated handle unit 21 in the intended grip direction.
  • the vacuum cleaner 1 comprises a battery assembly 25.
  • the battery assembly 25 is configured to supply electricity to the motor/fan unit 7.
  • the battery assembly 25 may comprise a number of rechargeable battery cells, such as a number of lithium ion battery cells.
  • the battery assembly 25 is supported relative to a main body 9 of the vacuum cleaner 1 via the elongated handle unit 21 and via the second elongated unit 22.
  • the elongated handle unit 21 may therefore also be referred to as a first elongated handle/support unit 21 and the second elongated unit 22 also be referred to as a second support unit 22, or a second handle/support unit 22.
  • the vacuum cleaner 1 comprises a second air conducting path 12 arranged downstream of the first air conducting path 11.
  • the second air conducting path 12 extends through at least a portion of the second elongated unit 22 and thus through a portion of the handle assembly 20.
  • a long air conducting path 11, 12 is allowed for downstream of the motor/fan unit 7 while conditions are provided for a vacuum cleaner 1 having a compact and slim design.
  • an air conducting path 11, 12 is provided downstream of the motor/fan unit 7 comprising several bends and turns. As a result thereof, the noise is attenuated in a more efficient manner because the noise can be deflected and reflected against walls of the air conducting path 11, 12.
  • the second elongated unit 22 is utilized for accommodating a portion of the second air conducting path 12, instead of the elongated handle unit 21, the palm and fingers of a user are not heated during operation of the vacuum cleaner 1. Thereby, a more user-friendly vacuum cleaner 1 is provided being more comfortable to use.
  • the air outlet 5 of the vacuum cleaner 1 is arranged on the second elongated unit 22.
  • the air outlet 5 is arranged on a side of the second elongated unit 22 which faces away from the elongated handle unit 21.
  • the air outlet 5 comprises at least a portion 5' being arranged in front of the motor/fan unit 7 seen along the first direction d1.
  • a more user-friendly vacuum cleaner 1 is provided being more comfortable to use. This is because the air flowing out from the air outlet 5 will flow in directions away from the elongated handle unit 21 and thereby also in directions away from the hand of a user during operation of the vacuum cleaner 1.
  • conditions are provided for a long air conducting path downstream of the motor/fan unit 7 so as to attenuate nose in an efficient manner while allowing for a slim and compact design of the vacuum cleaner 1.
  • the air outlet 5 of the vacuum cleaner 1 is a perforated section 5" of a body component 22 of the vacuum cleaner 1, namely a perforated section 5" of the second elongated unit 22. Also for this reason, a more user-friendly vacuum cleaner 1 is provided being more comfortable to use. This is because the air flowing out from the air outlet 5 will have a low flow velocity.
  • the perforated section 5" comprises a number of small-sized through-holes 15 through the second elongated unit 22.
  • a total cross sectional area of the number of small-sized through-holes 15 may be equal to, or greater than, the cross sectional area of the first air conducting path 11, and/or equal to, or greater than, the cross sectional area of the second air conducting path 12.
  • walls 51, 52 of at least one of the first and second air conducting paths 11, 12 may be covered by a noise attenuating material.
  • the noise attenuating material may comprise a soft foam material and/or a soft or harder sponge material.
  • walls 51, 52 of the first and second air conducting paths 11, 12 may be covered by a combination of a soft foam material and a harder sponge material. In this manner, noise at different frequencies can be attenuated in an efficient manner.
  • the vacuum cleaner 1 comprises power electronics 27 configured to control operation of the motor/fan unit 7.
  • the vacuum cleaner 1 comprises an air channel 29 and a secondary air outlet 35.
  • the air channel 29 is fluidly connected to the air diverting portion 11' of the first air conducting path 11.
  • the air channel 29 is configured to direct a partial flow of air past the power electronics 27 to the secondary air outlet 35 of the vacuum cleaner 1 to cool the power electronics 27.
  • the air channel 29 is arranged on the main body 9 at a location behind the motor/fan unit 7 seen along the first direction d1.
  • the secondary air outlet 35 is arranged on the main body 9 at a location behind the motor/fan unit 7 seen along the first direction d1.
  • the vacuum cleaner 1 is illustrated as comprising one air channel 29 connected to one secondary air outlet 35.
  • the vacuum cleaner 1 may comprise a number of air channels 29 each connected to a respective secondary outlet 35. Due to these features, an efficient cooling of the power electronics 27 is provided in a simple and cost-efficient manner while conditions are provided for a slim and compact design of the vacuum cleaner 1.
  • Fig. 3 illustrates a cross section of a vacuum cleaner 1 according to some further embodiments.
  • the vacuum cleaner 1 according to the embodiments illustrated in Fig. 3 may comprise the same features, functions, and advantages as the vacuum cleaner 1 explained with reference to Fig. 1 , with some differences explained below.
  • Like reference numbers refer to like elements throughout.
  • the vacuum cleaner 1 comprises a perforated cylindrical body 17.
  • the perforated cylindrical body 17 is arranged concentrically arranged around the motor/fan unit 7.
  • the first air conducting path 11 extends at least partially through holes 19 of the perforated body 17. That is, the holes 19 of the perforated body 17 are through-holes through which air from the motor/fan unit 7 can flow.
  • the holes 19 are distributed across the surface of the perforated cylindrical body 17 and also distributed across the length L of the perforated cylindrical body 17.
  • the first air conducting path 11 is arranged radially outside of the motor/fan unit 7 along the entire length L of the motor/fan unit 7 measured in the first direction d1.
  • the first air conducting path 11 extends radially outside of the motor/fan unit 7 a distance corresponding to the entire length L of the motor/fan unit 7 measured in the first direction d1.
  • the first air conducting path 11 of the vacuum cleaner 1 comprises at least a portion extending along the entire length L of the motor/fan unit 7 measured in the first direction d1, as is indicated in Fig. 3 .
  • the first air conducting path 11 is may be arranged radially outside of the motor/fan unit 7 along more than 40%, or more than 80%, of the length L of the motor/fan unit 7 measured in the first direction d1.
  • downstream describes the location/position of the component referred to relative an intended flow direction through the air conducting path of the vacuum cleaner 1, wherein the air conducting path of the vacuum cleaner 1 extends from the suction inlet 3 of the vacuum cleaner 1 to the air outlet 5 of the vacuum cleaner 1.
  • the motor/fan unit 7 is configured to generate an airflow from the suction inlet 3 to the air outlet 5 during operation of the motor/fan unit 7. Accordingly, the feature that the first air conducting path 11 is arranged downstream of the motor/fan unit 7 means that the first air conducting path 11 is arranged downstream of the motor/fan unit 7 relative to the flow direction through the motor/fan unit 7 and through the first air conducting path 11.
  • the feature that the first air conducting path 11 is arranged downstream of the motor/fan unit 7 means that the first air conducting path 11 is arranged after the motor/fan unit 7 relative to the flow direction through the motor/fan unit 7 and through the first air conducting path 11.
  • air pumped through the air conducting path of the vacuum cleaner 1 will first flow through motor/fan unit 7 and then through the first air conducting path 11.
  • the feature that the second air conducting path 12 is arranged downstream of the first air conducting path 11 means that the second air conducting path 12 is arranged downstream of the first air conducting path 11 relative to the flow directions through the first and second air conducting paths 11, 12.
  • the feature that the second air conducting path 12 is arranged downstream of the first air conducting path 11 means that the second air conducting path 12 is arranged after the first air conducting path 11 relative to the flow directions through the first and second air conducting paths 11, 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Suction Cleaners (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (20)

  1. Handstaubsauger (1) der Folgendes umfasst:
    - eine Motor-Gebläse-Einheit (7) zum Erzeugen eines Luftstroms einer ersten Richtung (d1) an einem Einlass (7') der Motor-Gebläse-Einheit (7) und
    - einen ersten Luftleitungspfad (11) der stromabwärts von der Motor-Gebläse-Einheit (7) angeordnet ist,
    dadurch gekennzeichnet, dass
    der erste Luftleitungspfad (11) dazu ausgelegt ist, Luft derart abzuleiten, dass sie in eine Richtung (d2) strömt, die der ersten Richtung (d1) entgegengesetzt ist,
    und wobei der Luftleitungspfad (11) entlang von mehr als 40 % der Länge (L) der Motor-Gebläse-Einheit (7), in der ersten Richtung (d1) gemessen, radial außerhalb der Motor-Gebläse-Einheit (7) angeordnet ist.
  2. Staubsauger (1) nach Anspruch 1, wobei der Luftleitungspfad (11) entlang von mehr als 80 % der Länge (L) der Motor-Gebläse-Einheit (7) radial außerhalb der Motor-Gebläse-Einheit (7) angeordnet ist.
  3. Staubsauger (1) nach Anspruch 1 oder 2, wobei der Luftleitungspfad (11) entlang der gesamten Länge (L) der Motor-Gebläse-Einheit (7) radial außerhalb der Motor-Gebläse-Einheit (7) angeordnet ist.
  4. Staubsauger nach einem der vorhergehenden Ansprüche, wobei der erste Luftleitungspfad (11) die Motor-Gebläse-Einheit (7) mindestens teilweise umschließt.
  5. Staubsauger (1) nach Anspruch 4, wobei der Luftleitungspfad (11) mehr als 50 % des Umfangs der Motor-Gebläse-Einheit (7) umschließt.
  6. Staubsauger (1) nach einem der vorhergehenden Ansprüche, wobei der erste Luftleitungspfad (11) einen Luftumleitungsabschnitt (11') umfasst, der dazu ausgelegt ist, die Luftstromrichtung um etwa 180 Grad zu ändern, und wobei der Luftumleitungsabschnitt (11') direkt stromabwärts von der Motor-Gebläse-Einheit (7) angeordnet ist.
  7. Staubsauger (1) nach einem der vorhergehenden Ansprüche, wobei der Staubsauger (1) eine Griffanordnung (20) und einen zweiten Luftleitungspfad (12) umfasst, der stromabwärts vom ersten Luftleitungspfad (11) angeordnet ist, und wobei sich der zweite Luftleitungspfad (12) durch einen Abschnitt der Griffanordnung (20) erstreckt.
  8. Staubsauger (1) nach Anspruch 7, wobei die Griffanordnung (20) eine längliche Griffeinheit (21), die dazu ausgelegt ist, während des Betriebs des Staubsaugers (1) von einem Benutzer gegriffen zu werden, und eine zweite längliche Einheit (22), die in einem Abstand von der länglichen Griffeinheit (21) angeordnet ist, umfasst und wobei sich der zweite Luftleitungspfad (12) durch mindestens einen Abschnitt der zweiten länglichen Einheit (22) erstreckt.
  9. Staubsauger (1) nach Anspruch 8, wobei der Staubsauger (1) einen Luftauslass (5) umfasst, der an der zweiten länglichen Einheit (22) angeordnet ist.
  10. Staubsauger (1) nach einem der vorhergehenden Ansprüche, wobei der Staubsauger (1) eine Batterieanordnung (25) umfasst, die dazu ausgelegt ist, die Motor-Gebläse-Einheit (7) mit Elektrizität zu versorgen.
  11. Staubsauger (1) nach Anspruch 8 oder 9 und Anspruch 10, wobei die Batterieanordnung (25) relativ zu einem Hauptkörper (9) des Staubsaugers (1) via die längliche Griffeinheit (21) und die zweite längliche Einheit (22) gestützt wird.
  12. Staubsauger (1) nach einem der vorhergehenden Ansprüche, wobei der Staubsauger (1) einen Luftauslass (5) umfasst, der mindestens einen Abschnitt (5') umfasst, der, entlang der ersten Richtung (d1) gesehen, vor der Motor-Gebläse-Einheit (7) angeordnet ist.
  13. Staubsauger (1) nach einem der vorhergehenden Ansprüche, wobei der Staubsauger (1) einen Luftauslass (5) umfasst, bei dem es sich um einen perforierten Bereich (5") einer Körperkomponente (22) des Staubsaugers (1) handelt.
  14. Staubsauger (1) nach Anspruch 13, wobei der perforierte Bereich (5") eine Anzahl von kleinen Durchgangslöchern (15) durch die Körperkomponente (22) umfasst und wobei eine gesamte Querschnittsfläche der Anzahl von kleinen Durchgangslöchern (15) gleich oder größer als die Querschnittsfläche des ersten Luftleitungspfads (11) ist.
  15. Staubsauger (1) nach einem der vorhergehenden Ansprüche, wobei der Staubsauger (1) eine Leistungselektronik (27) umfasst, die dazu ausgelegt ist, einen Betrieb der Motor-Gebläse-Einheit (7) zu steuern, und wobei der Staubsauger (1) einen Luftkanal (29) umfasst, der dazu ausgelegt ist, einen Teilstrom von Luft an der Leistungselektronik (27) vorbei zu einem sekundären Luftauslass (35) des Staubsaugers (1) zu leiten, um die Leistungselektronik (27) zu kühlen.
  16. Staubsauger (1) nach Anspruch 15, wobei der Staubsauger (1) einen Hauptkörper (9) umfasst, in dem mindestens die Motor-Gebläse-Einheit (7) und der erste Luftleitungspfad (11) aufgenommen sind, und wobei der Luftkanal (29) am Hauptkörper (9) angeordnet ist.
  17. Staubsauger (1) nach Anspruch 16, wobei der Luftkanal (29), entlang der ersten Richtung (d1) gesehen, hinter der Motor-Gebläse-Einheit (7) angeordnet ist.
  18. Staubsauger (1) nach Anspruch 16 oder 17, wobei der sekundäre Luftauslass (35), entlang der ersten Richtung (d1) gesehen, am Hauptkörper (9) an einer Stelle hinter der Motor-Gebläse-Einheit (7) angeordnet ist.
  19. Staubsauger (1) nach einem der vorhergehenden Ansprüche, wobei der Staubsauger (1) einen zweiten Luftleitungspfad (12) umfasst, der stromabwärts vom ersten Luftleitungspfad (11) angeordnet ist, und wobei Wände (51, 52) von mindestens einem des ersten und des zweiten Luftleitungspfads (11, 12) mit einem Geräuschdämpfungsmaterial abgedeckt sind.
  20. Staubsauger (1) nach einem der vorhergehenden Ansprüche, wobei der Staubsauger (1) einen perforierten zylindrischen Körper (17) umfasst, der um die Motor-Gebläse-Einheit (7) angeordnet ist, und wobei sich der erste Luftleitungspfad (11) mindestens teilweise durch Löcher (19) des perforierten Körpers (17) erstreckt.
EP20820862.9A 2020-12-07 2020-12-07 Staubsauger Active EP4255271B1 (de)

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PCT/EP2020/084792 WO2022122111A1 (en) 2020-12-07 2020-12-07 Vacuum cleaner

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JP2023552436A (ja) 2023-12-15
KR20230116804A (ko) 2023-08-04
US20240032745A1 (en) 2024-02-01
EP4255271A1 (de) 2023-10-11
WO2022122111A1 (en) 2022-06-16

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