EP1721557A1 - Motoranordnung und Staubsauger mit derselben - Google Patents

Motoranordnung und Staubsauger mit derselben Download PDF

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Publication number
EP1721557A1
EP1721557A1 EP06290706A EP06290706A EP1721557A1 EP 1721557 A1 EP1721557 A1 EP 1721557A1 EP 06290706 A EP06290706 A EP 06290706A EP 06290706 A EP06290706 A EP 06290706A EP 1721557 A1 EP1721557 A1 EP 1721557A1
Authority
EP
European Patent Office
Prior art keywords
motor
casing
motor casing
air
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06290706A
Other languages
English (en)
French (fr)
Inventor
Sung-Cheol Lee
Hwa-Gyu Song
Hyun-Jun Oh
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Gwangju Electronics Co Ltd
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 Samsung Gwangju Electronics Co Ltd filed Critical Samsung Gwangju Electronics Co Ltd
Publication of EP1721557A1 publication Critical patent/EP1721557A1/de
Withdrawn legal-status Critical Current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
    • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
    • 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

Definitions

  • the present invention relates to a vacuum cleaner, and more particularly, to a motor assembly configured to reduce noise generated in a motor and a vacuum cleaner having the same.
  • a vacuum cleaner draws in dust using a suction force generated by a motor and collects the dust in a dust collecting chamber.
  • the vacuum cleaner employs a high output motor having a high number of RPMs. However, such a high output motor causes a large volume of noise when it is driven.
  • Korean Patent Publication No. 1997-32650 describes a motor casing including a noise absorbing member and a noise blocking member.
  • the noise blocking member encloses the noise absorbing member and has diffusion perforations formed on a surface thereof.
  • Japanese Patent Publication No. H01-268524 describes a motor casing including a first penetrating hole formed on a side surface, a second penetrating hole formed on a rear surface, and a noise absorbing member disposed at the first and the second penetrating holes.
  • both disclosures can reduce a blade passing frequency (BPF) and the entire noise level, they do not effectively reduce a low frequency band noise.
  • a first aspect of the present invention is to provide a motor assembly having a simplified configuration and a vacuum cleaner having the same.
  • the present invention provides a motor assembly that includes: a motor including at least a motor body and a motor blade portion; at least one inner motor casing configured to enclose at least a part of the motor; and at least one outer motor casing configured to enclose at least a part of the at least one inner motor casing, wherein air in the motor is caused to change direction when passing along at least one of the at least one inner motor casing and the at least one outer motor casing.
  • a vacuum cleaner that includes: a cleaner body including at least a dust collecting chamber and a motor chamber; a brush assembly configured to be connected to the dust collecting chamber; a motor disposed at the motor chamber and including at least a motor body and a motor blade portion; at least one inner motor casing configured to enclose at least a part of the motor; and at least one outer motor casing configured to enclose at least a part of the at least one inner motor casing, wherein air in the motor is caused to change direction when passing along at least one of the at least one inner motor casing and the at least one outer motor casing.
  • a motor assembly which includes: a motor; at least one inner motor casing configured to enclose at least a part of the motor; at least one outer motor casing configured to enclose at least a part of the at least one inner motor casing; and means for changing a direction of air flow between the at least one motor casing and the at least one outer motor casing.
  • FIG. 1 is a view schematically illustrating a cleaner body in which a motor assembly according to a non-limiting embodiment of the present invention may be mounted;
  • FIG. 2 is a view illustrating the motor assembly of FIG. 1, in which a contour line of an outer motor casing is expressed by a dashed line such that only an inner motor casing is shown;
  • FIG. 3 is an exploded perspective view illustrating the motor assembly of FIG. 2;
  • FIG. 4 is a graph illustrating a noise reduction effect achieved by the motor assembly according to a non-limiting embodiment of the present invention.
  • FIG. 1 is a view illustrating a cleaner body in which a motor assembly according to a non-limiting embodiment of the present invention is mounted.
  • the cleaner body 10 may include a dust collecting chamber S 1 and a motor chamber S2.
  • the dust collecting chamber S1 may be a space that may be partitioned from the motor chamber S2 by a partition 10a and may be formed in a front portion of the cleaner body 10.
  • the dust collecting chamber S1 may have a dust collector to separate and collect dust.
  • a dust bag 11 may be provided as the dust collector.
  • a single or multi-cyclone dust collecting apparatus (capable of being used repeatedly) may be provided in the dust collecting chamber S 1.
  • a suction pipe 12 may be disposed at an upper portion of the dust collecting chamber S 1 and may protrude to the outside of the cleaner body 10 as well as to the inside of the cleaner body 10. Dust may be drawn in through the suction pipe 12.
  • the suction pipe 12 may be connected to a flexible hose 14 outside the cleaner body 10 and to the dust bag 11 inside the cleaner body 10.
  • the flexible hose 14 may be connected to a brush assembly (not shown) through an extension pipe (not shown). The brush assembly may draw in dust from a cleaning surface therethrough.
  • the dust drawn in through the brush assembly (not shown), the extension pipe (not shown), the flexible hose 14, and the suction pipe 12 may be collected in the dust bag 11, whereas the air may escape from the dust bag 11 in the direction of arrow and may flow into the motor chamber S2 through a filter 40.
  • the motor chamber S2 may include a space that is partitioned from the dust collecting chamber S 1 by partition 10a and may be formed in a rear portion of the cleaner body 10.
  • the motor chamber S2 may include a first motor chamber S21 and a second motor chamber S22.
  • the first motor chamber S21 may be enclosed by an upper wall 10b and a side wall 10c and may be located in front of the second motor chamber S2.
  • a motor assembly 19 may be disposed in the first motor chamber S21.
  • a motor 20 may use a high-output motor capable of generating a high number of revolutions per minute (RPMs). The high output motor may generate a large volume of noise when it is driven.
  • the motor assembly 19 may be provided in the first motor chamber S21.
  • the second motor chamber S22 may be formed in the rear portion of the motor chamber S2 by the side wall 10c.
  • a discharge pipe 16 may be disposed at a rear upper portion of the motor chamber S2 to discharge the air to the outside therethrough.
  • a discharge filter 30 may be disposed in an outlet of the discharge pipe 16 to filter dust included in the air.
  • the motor assembly 19 may include the motor 20 which may include a motor body 20a and a motor blade portion 20b.
  • a motor casing 100 may also be provided to enclose the motor 20 and may include an inner motor casing 110 and an outer motor casing 120.
  • the configuration of the motor 20 may be similar to those known to those of skill in the art.
  • the inner motor casing 110 may enclose the motor body 20a and may be spaced away from the motor body 20a by a predetermined distance such that a first air passage P1 (see FIG. 1) may be formed between the motor 20 and the inner motor casing 110.
  • a plurality of first air passing holes 110a may be formed along a circumference of the inner motor casing 110.
  • the inner motor casing 110 may include a first securing protrusion 111 formed at a circular edge of the inner motor casing 110 and may include a first securing hole 110b through which a screw is inserted.
  • the outer motor casing 120 may include a front casing 121 and a rear casing 122, which may be separable from each other.
  • the front casing 121 may enclose the motor blade portion 20b and may have a second securing protrusion 121b formed at a circular edge of the front casing 121 to be connected to the rear casing 122.
  • the securing protrusion 121 b may include a second securing hole 121 bb corresponding to the first securing hole 110b of the first securing protrusion 111.
  • the rear casing 122 may enclose the inner motor casing 110, which may be spaced from the inner motor casing 110 by a predetermined distance such that a second air passage P2 (see FIG. 1) may be formed between the inner motor casing 110 and the rear casing 122.
  • the rear casing 122 may have a plurality of second air passing holes 122a defined on a surface (e.g., a rear surface) of the rear casing 122 in a radial direction.
  • the second air passing holes may be omitted from the center of the rear casing 122.
  • the arrangement of the second air passing holes 122a may extend to the center of the rear casing 122.
  • the rear casing 122 may have a third securing protrusion 122b formed at a circular edge thereof to be connected with the front casing 121.
  • the third securing protrusion 122b may include a third securing hole 122bb corresponding to the first and the second securing holes 110b, 121 bb of the first and the second securing protrusions 111, 121b.
  • the inner motor casing 110 may enclose only the motor body 20a in this non-limiting embodiment, it may also be designed to enclose the motor blade portion 20b as well as the motor body 20a.
  • the outer motor casing 120 may be designed to enclose the entire motor 20 or to enclose only the motor body 20a. Also, variations of the air channel are possible. For example, two or more outer motor casings 120 may enclose the inner motor casing to reduce noise.
  • the air when the air escapes from the motor 20, it may be deflected by the first air passage P1, may pass through the first air passing holes 110a, may again be deflected by the second air passage P2, and then may pass through the second air passing holes 122a.
  • the air may change its direction when it flows from the first air passage P1 to the second air passage P2.
  • the air may change its direction by substantially 90° to 180° when it flows into the second air passage P2 from the first air passage P1.
  • FIG. 4 is a graph illustrating a noise reduction effect achieved by the motor assembly.
  • noise is measured as 73.5dBA if the motor assembly 19 is provided, whereas noise is measured as 78.7dBA if there is no motor assembly 19.
  • the noise is reduced by as much as 5.2dBA.
  • the amount of noise reduction is large in a low frequency band (0 ⁇ 2000Hz).
  • a suction force is generated when the motor 20 is driven, and dust is drawn in through the brush assembly (not shown), the extension pipe (not shown), the flexible hose 14, and the suction pipe 12 by the suction force, and collected in the dust bag 11.
  • the motor assembly 19 and the vacuum cleaner having the same have the following advantages.
  • the motor assembly 19 may include the inner motor casing 110 having the first air passing holes 110a and the outer motor casing 120 having the second air passing holes 122a, and may not require an extra noise-absorbing member, the motor assembly 19 has a simplified configuration and its manufacturing costs decrease.
  • the air changes its flow velocity while being deflected by the first air passage P1, passing through the first air passing holes 110a, being again deflected by the second air passage P2, and then passing through the second air passing holes 122a. Also, since the air changes its direction while moving from the first air passage P1 to the second air passage P2, a noise is reduced. Especially, a low frequency band noise is effectively reduced. Accordingly, a user can clean without much noise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Suction Cleaners (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP06290706A 2005-05-13 2006-05-03 Motoranordnung und Staubsauger mit derselben Withdrawn EP1721557A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020050040203A KR20060117711A (ko) 2005-05-13 2005-05-13 모터조립체 및 이를 구비한 진공청소기

Publications (1)

Publication Number Publication Date
EP1721557A1 true EP1721557A1 (de) 2006-11-15

Family

ID=36753984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06290706A Withdrawn EP1721557A1 (de) 2005-05-13 2006-05-03 Motoranordnung und Staubsauger mit derselben

Country Status (6)

Country Link
US (1) US20060257269A1 (de)
EP (1) EP1721557A1 (de)
KR (1) KR20060117711A (de)
CN (1) CN1866683A (de)
AU (1) AU2006201908B2 (de)
RU (1) RU2006117229A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1952742A2 (de) * 2007-02-05 2008-08-06 Samsung Gwangju Electronics Co., Ltd. Motorenanordnung und Staubsauger mit derselben
EP2436291A4 (de) * 2009-05-29 2015-10-21 Toshiba Kk Elektrischer reiniger
EP3381345A4 (de) * 2016-02-19 2019-04-10 Samsung Electronics Co., Ltd. Roboterreiniger

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102599851B (zh) * 2011-01-21 2017-01-25 南京乐金熊猫电器有限公司 降低电机噪音的电机盒结构
EP2870905B1 (de) * 2013-11-11 2019-01-02 NELA razvojni center d.o.o. Podruznica OTOKI System zum Reduzieren von Staubsaugerlärm und -schwingungen
CN105342525A (zh) * 2015-03-02 2016-02-24 于长海 一种家用小型吸尘器
US11478116B2 (en) 2018-01-15 2022-10-25 Omachron Intellectual Property Inc Surface cleaning apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01268524A (ja) * 1988-04-20 1989-10-26 Sanyo Electric Co Ltd 電気掃除機
JPH0716176A (ja) * 1993-06-30 1995-01-20 Hitachi Ltd 電気掃除機
US5720074A (en) * 1995-08-31 1998-02-24 Daewoo Electronics Co., Ltd Vacuum cleaner having a noise reduction system
US5894629A (en) * 1996-05-17 1999-04-20 Daewoo Electronics Co., Ltd. Sound absorbing assembly for a vacuum cleaner
EP0910980A2 (de) * 1997-10-27 1999-04-28 Daewoo Electronics Co., Ltd Geräuscharmer Staubsauger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01268524A (ja) * 1988-04-20 1989-10-26 Sanyo Electric Co Ltd 電気掃除機
JPH0716176A (ja) * 1993-06-30 1995-01-20 Hitachi Ltd 電気掃除機
US5720074A (en) * 1995-08-31 1998-02-24 Daewoo Electronics Co., Ltd Vacuum cleaner having a noise reduction system
US5894629A (en) * 1996-05-17 1999-04-20 Daewoo Electronics Co., Ltd. Sound absorbing assembly for a vacuum cleaner
EP0910980A2 (de) * 1997-10-27 1999-04-28 Daewoo Electronics Co., Ltd Geräuscharmer Staubsauger

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 030 (C - 678) 19 January 1990 (1990-01-19) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 04 31 May 1995 (1995-05-31) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1952742A2 (de) * 2007-02-05 2008-08-06 Samsung Gwangju Electronics Co., Ltd. Motorenanordnung und Staubsauger mit derselben
EP1952742A3 (de) * 2007-02-05 2009-12-23 Samsung Gwangju Electronics Co., Ltd. Motorenanordnung und Staubsauger mit derselben
EP2436291A4 (de) * 2009-05-29 2015-10-21 Toshiba Kk Elektrischer reiniger
EP3381345A4 (de) * 2016-02-19 2019-04-10 Samsung Electronics Co., Ltd. Roboterreiniger
US11452411B2 (en) 2016-02-19 2022-09-27 Samsung Electronics Co., Ltd. Robot cleaner

Also Published As

Publication number Publication date
AU2006201908A1 (en) 2006-11-30
AU2006201908B2 (en) 2008-01-03
RU2006117229A (ru) 2007-12-10
CN1866683A (zh) 2006-11-22
US20060257269A1 (en) 2006-11-16
KR20060117711A (ko) 2006-11-17

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