EP2614759A1 - Electric vacuum cleaner - Google Patents
Electric vacuum cleaner Download PDFInfo
- Publication number
- EP2614759A1 EP2614759A1 EP11823202.4A EP11823202A EP2614759A1 EP 2614759 A1 EP2614759 A1 EP 2614759A1 EP 11823202 A EP11823202 A EP 11823202A EP 2614759 A1 EP2614759 A1 EP 2614759A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blower
- space
- dust
- vacuum cleaner
- electric vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- 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
-
- 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
- A47L9/12—Dry filters
- A47L9/122—Dry filters flat
Definitions
- the present invention relates to an electric vacuum cleaner.
- a conventional electric vacuum cleaner is formed of an electric blower generating a suction wind and a cyclone dust collector placed on an upstream side of the blower. An airflow containing dust flows into the cyclone dust collector, and this airflow circles within the dust collector for the dust to be centrifuged, so that the dust remains in the collector while the air is discharged outside the collector.
- the cyclone dust collector is connected to the blower via an air duct.
- the air having undergone the centrifugal separation flows to the blower through this air duct (e.g. refer to Patent Literature 1.)
- a wind noise produced at an intake port of the blower travels through the air duct or on the inner wall of the air duct to the exterior of the vacuum cleaner.
- the conventional electric vacuum cleaner thus has a problem of producing a loud noise.
- Patent Literature 1 Unexamined Japanese Patent Publication No. 2010 - 99183
- An electric vacuum cleaner of the present invention comprises the following structural elements:
- the foregoing structure allows a wind noise produced at an intake port of the blower to travel through the multiple openings formed in the communicating section, and thereby resonating the air in the space.
- This mechanism results in an effect similar to that of a Helmholtz resonator, so that the wind noise of high frequency can be attenuated and lowered.
- Blower 2 is supported by front supporter 22 at the front and by rear supporter 23 at the rear. Both of supporters 22 and 23 are made of elastic material. The front of blower 2 is sandwiched by motor housing right 24 and motor housing left 25 for lowering the noises produced in blower 2.
- Sound deadening box 26 includes filter 28 for trapping fine dust contained in exhausted air from blower 2.
- the air passes through filter 28, which removes the fine dust, and then passes through discharge path 29 shown in Fig. 4 and formed at the lower section of sound deadening box 26.
- the air is then discharged outside cleaner body 1 via discharge port 31 formed at housing 30 that is a part of the rear outer shell of cleaner body 1.
- communicating section 33 is provided for forming air duct 32 through which the air flows from dust collector 4 to blower 2.
- air duct 32 is disposed between blower 2 and dust collector 4.
- Lattice-like communicating port 34 is formed as shown in Fig. 5 approximately in front of blower 2. This port 34 communicates with intake port 2a of blower 2.
- Fig. 6 shows, multiple openings 35 are formed in communicating section 33 confronting intake port 2a. Openings 35 are ranged from a place confronting intake port 2a to a place in the vicinity of communicating port 34.
- space 36 communicating with air duct 32 is provided adjacently to communicating section 33.
- Space 36 is formed of communicating section 33 and space forming section 37.
- Space forming section 37 is formed of space forming rib 38 and space forming face 39.
- Rib 38 is formed in communicating section 33 such that it surrounds the region in which openings 35 are provided. Space forming faces 38 confronts communicating section 33.
- sealable member 40 is provided between space forming face 39 of upper housing 15 and space forming rib 38. Sealable member 40 prevents the suction wind from leaking.
- Space 36 is formed by layering the communicating section 33, sealable member 40, and upper housing 15 in this order. This structure allows assembling cleaner body 1 with ease, and preventing reliably the suction wind from leaking.
- upper cover 41 which is a part of the outer shell of cleaner body 1, and cap 42 are provided, so that multiple wall-like faces work as noise-blocking walls against the noise produced in cleaner body 1. As a result, the noise is further prevented from leaking through the outer shell.
- Communicating section 33 includes multiple openings 35 ranged from the place confronting intake port 2a of blower 2 to a place in the vicinity of communicating port 34.
- This structure allows the wind noise produced at intake port 2a to travel to openings 35 via the shortest route, and the wind noise passes through openings 35, thereby resonating the air in space 36.
- This mechanism produces an effect similar to that of the Helmholtz resonator, so that the wind noise of high frequency can be attenuated.
- the shape of each opening 35 can be round or polygon with the same effect maintained.
- An outer shell of dust collector 4 is formed of dust box 43, upper lid 18, grip 19, and bottom lid 44.
- Upper lid 18 covers the top face of dust box 43, and grip 19 is provided to upper lid 18.
- Bottom lid 44 covers the underside of dust box 43.
- first stage filter 45 and extension part 46 under filter 45 are mounted inside dust box 43 by welding or engagement with a claw (not shown).
- second stage filter 47, dust removing section 48, and motor 49 are provided above the first stage filer 45.
- Dust removing section 48 drops the dust accumulated in second stage filter 47 by means of vibration, and motor 49 applies the vibration to dust removing section 48.
- the air containing dust is sucked from a suction port (not shown) of dust box 43 into cyclone space 50.
- a circling flow produced by the first stage filter 45 separates the air containing dust into the dust chiefly formed of dust balls and the air still containing fine dust.
- the dust chiefly formed of dust balls travels through dust collecting path 51 and is accumulated in dust accumulation space 52.
- the dust chiefly formed of dust balls is prevented from flying back to cyclone space 50 by a wall formed vertically above space 50.
- This wall is formed of extension part 46 and slant part 53, and increases an efficiency of dust collection.
- Extension part 46 is mounted to first stage filter 45, and slant part 53 is provided to dust box 43.
- the fine dust contained in the air having passed through first stage filter 45 is filtered by second stage filter 47, and only the air free from the fine dust passes through second stage filter 47 and then this air passes through communicating port 34 shown in Fig. 4 before it is sucked by blower 2.
- the fine dust accumulated in second stage filter 47 is removed therefrom by the vibration applied to dust removing section 48, and passes through first stage filter 45 before it is accumulated in tube 54 disposed under filter 45.
- a cyclone dust collector is used as dust collector 4; however, a dust collector employing a sack, e.g. paper bag, also can lower the noise in operation.
- the electric vacuum cleaner of the present invention lowers the noise in operation, so that it is useful for a household-use cleaner and a business-use cleaner.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Suction Cleaners (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
Abstract
An electric vacuum cleaner includes a blower that sucks air for generating suction wind, a dust collector for collecting dust sucked by the suction wind, a communicating section disposed between the blower and the dust collector for forming an air duct through which the air flows from the dust collector to the blower. Multiple openings are formed in the communicating section and a space is formed adjacently to the communicating section.
Description
- The present invention relates to an electric vacuum cleaner.
- A conventional electric vacuum cleaner is formed of an electric blower generating a suction wind and a cyclone dust collector placed on an upstream side of the blower. An airflow containing dust flows into the cyclone dust collector, and this airflow circles within the dust collector for the dust to be centrifuged, so that the dust remains in the collector while the air is discharged outside the collector.
- The cyclone dust collector is connected to the blower via an air duct. The air having undergone the centrifugal separation flows to the blower through this air duct (e.g. refer to
Patent Literature 1.) In this conventional vacuum cleaner, a wind noise produced at an intake port of the blower travels through the air duct or on the inner wall of the air duct to the exterior of the vacuum cleaner. The conventional electric vacuum cleaner thus has a problem of producing a loud noise. - Patent Literature 1: Unexamined Japanese Patent Publication No.
2010 - 99183 - An electric vacuum cleaner of the present invention comprises the following structural elements:
- a blower that sucks air for generating suction wind;
- a dust collector for collecting dust through the suction wind; and
- a communicating section disposed between the blower and the dust collector and forming an air duct through which the air flows from the dust collector to the blower, and multiple openings being formed in the communicating section, and a space being formed adjacently to the communicating section.
- The foregoing structure allows a wind noise produced at an intake port of the blower to travel through the multiple openings formed in the communicating section, and thereby resonating the air in the space. This mechanism results in an effect similar to that of a Helmholtz resonator, so that the wind noise of high frequency can be attenuated and lowered.
-
-
Fig. 1 is a perspective view of an electric vacuum cleaner in accordance with an embodiment of the present invention. -
Fig. 2 is a sectional view cut along a center line of a cleaner body of the electric vacuum cleaner shown inFig. 1 . -
Fig. 3 is a perspective view of the cleaner body without a dust collector. -
Fig. 4 is a sectional view of the cleaner body focusing on a blower. -
Fig. 5 is a perspective view of a blower unit of the electric vacuum cleaner. -
Fig. 6 is a perspective exploded view of the blower unit of the electric vacuum cleaner. - An exemplary embodiment of the present invention is demonstrated hereinafter with reference to the accompanying drawings. Not to mention, the present invention is not limited to this embodiment.
-
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Fig. 1 is a perspective view of an electric vacuum cleaner in accordance with the embodiment of the present invention. As shown inFig. 1 ,cleaner body 1 includesblower chamber 3 and a cord winder (not shown) at a rear section anddust collector receptor 5 at a front section.Suction port 10 is provided to the front section ofcleaner body 1, and connectingpipe 9 provided to a first end ofhose 8 can be connected detachably tosuction port 10.Leader pipe 12 havinggrip 11 is connected to a second end ofhose 8.Extension pipe 13 is telescopic and detachable, and a first end thereof is connected detachably toleader pipe 12 and a second end thereof is connected detachably to suckingdevice 14 having an opening (not shown) for sucking dust. -
Fig. 2 is a sectional view cut along a center line ofcleaner body 1 of the electric vacuum cleaner. As shown inFig. 2 ,cleaner body 1 includes a pair ofmovable wheels 6 on both sides at a lower part of the rear section, andmovable caster 7 at a front bottom.Blower chamber 3 accommodatesblower 2 therein for sucking air and generating a suction wind.Dust collector receptor 5 shown inFig. 1 receivesdetachable dust collector 4 that collects and sorts the dust sucked by the suction wind. -
Fig. 3 is a perspective view of the cleaner body without the dust collector. AsFig. 3 shows,cleaner body 1 is formed ofupper housing 15 andlower housing 16, and both ofhousings cleaner body 1,handle 17 is provided to be used for carryingcleaner body 1. -
Fig. 4 is a sectional view of the cleaner body focusing on the blower of the electric vacuum cleaner in accordance with the embodiment.Fig. 5 is a perspective view of a blower unit of the electric vacuum cleaner.Fig. 6 is a perspective exploded view of the blower unit of the electric vacuum cleaner. AsFig. 4 shows,handle 17 has recess 21 which mates withprotrusion 20 formed ongrip 19 mounted rotatably onupper lid 18 ofdust collector 4.Dust collector 4 can be thus reliably and rigidly mounted tocleaner body 1. - Blower 2 is supported by
front supporter 22 at the front and byrear supporter 23 at the rear. Both ofsupporters blower 2 is sandwiched by motor housing right 24 and motor housing left 25 for lowering the noises produced inblower 2. - As
Fig. 5 shows, the front ofblower 2 is surrounded by sound deadeningbox 26 and sounddeadening lid 27.Sound deadening box 26 includesfilter 28 for trapping fine dust contained in exhausted air fromblower 2. The air passes throughfilter 28, which removes the fine dust, and then passes throughdischarge path 29 shown inFig. 4 and formed at the lower section ofsound deadening box 26. The air is then discharged outsidecleaner body 1 viadischarge port 31 formed athousing 30 that is a part of the rear outer shell ofcleaner body 1. - As
Fig. 4 shows, on the upstream side ofblower 2, communicatingsection 33 is provided for formingair duct 32 through which the air flows fromdust collector 4 toblower 2. In other words,air duct 32 is disposed betweenblower 2 anddust collector 4. Lattice-like communicatingport 34 is formed as shown inFig. 5 approximately in front ofblower 2. Thisport 34 communicates withintake port 2a ofblower 2. AsFig. 6 shows,multiple openings 35 are formed in communicatingsection 33 confrontingintake port 2a.Openings 35 are ranged from a place confrontingintake port 2a to a place in the vicinity of communicatingport 34. - As
Fig. 4 shows,space 36 communicating withair duct 32 is provided adjacently to communicatingsection 33.Space 36 is formed of communicatingsection 33 andspace forming section 37. -
Space forming section 37 is formed ofspace forming rib 38 andspace forming face 39.Rib 38 is formed in communicatingsection 33 such that it surrounds the region in whichopenings 35 are provided. Space forming faces 38confronts communicating section 33. On top of that,sealable member 40 is provided betweenspace forming face 39 ofupper housing 15 andspace forming rib 38.Sealable member 40 prevents the suction wind from leaking.Space 36 is formed by layering the communicatingsection 33,sealable member 40, andupper housing 15 in this order. This structure allows assemblingcleaner body 1 with ease, and preventing reliably the suction wind from leaking. - On top of that, above the
space forming face 39,upper cover 41, which is a part of the outer shell ofcleaner body 1, and cap 42 are provided, so that multiple wall-like faces work as noise-blocking walls against the noise produced incleaner body 1. As a result, the noise is further prevented from leaking through the outer shell. - Communicating
section 33 includesmultiple openings 35 ranged from the place confrontingintake port 2a ofblower 2 to a place in the vicinity of communicatingport 34. This structure allows the wind noise produced atintake port 2a to travel toopenings 35 via the shortest route, and the wind noise passes throughopenings 35, thereby resonating the air inspace 36. Not only the wind noise produced atintake port 2a but also another wind noise produced at communicatingport 34 passes throughopenings 35 formed in communicatingsection 33, whereby the air inspace 36 is resonated. This mechanism produces an effect similar to that of the Helmholtz resonator, so that the wind noise of high frequency can be attenuated. The shape of eachopening 35 can be round or polygon with the same effect maintained. - An outer shell of
dust collector 4 is formed ofdust box 43,upper lid 18,grip 19, andbottom lid 44.Upper lid 18 covers the top face ofdust box 43, andgrip 19 is provided toupper lid 18.Bottom lid 44 covers the underside ofdust box 43. - As
Fig. 2 shows,first stage filter 45 andextension part 46 underfilter 45 are mounted insidedust box 43 by welding or engagement with a claw (not shown). Above thefirst stage filer 45,second stage filter 47,dust removing section 48, andmotor 49 are provided.Dust removing section 48 drops the dust accumulated insecond stage filter 47 by means of vibration, andmotor 49 applies the vibration to dust removingsection 48. The air containing dust is sucked from a suction port (not shown) ofdust box 43 intocyclone space 50. A circling flow produced by thefirst stage filter 45 separates the air containing dust into the dust chiefly formed of dust balls and the air still containing fine dust. The dust chiefly formed of dust balls travels throughdust collecting path 51 and is accumulated indust accumulation space 52. The dust chiefly formed of dust balls is prevented from flying back tocyclone space 50 by a wall formed vertically abovespace 50. This wall is formed ofextension part 46 andslant part 53, and increases an efficiency of dust collection.Extension part 46 is mounted tofirst stage filter 45, and slantpart 53 is provided todust box 43. - The fine dust contained in the air having passed through
first stage filter 45 is filtered bysecond stage filter 47, and only the air free from the fine dust passes throughsecond stage filter 47 and then this air passes through communicatingport 34 shown inFig. 4 before it is sucked byblower 2. The fine dust accumulated insecond stage filter 47 is removed therefrom by the vibration applied to dust removingsection 48, and passes throughfirst stage filter 45 before it is accumulated intube 54 disposed underfilter 45. - In this embodiment, a cyclone dust collector is used as
dust collector 4; however, a dust collector employing a sack, e.g. paper bag, also can lower the noise in operation. - The electric vacuum cleaner of the present invention lowers the noise in operation, so that it is useful for a household-use cleaner and a business-use cleaner.
Description of Reference Marks 1 cleaner body 2 blower 2a suction port 3 blower chamber 4 dust collector 5 dust collector receptor 6 wheel 7 caster 8 hose 9 connecting pipe 10 suction port 11 grip 12 leader pipe 13 extension pipe 14 sucking device 15 upper housing 16 lower housing 17 handle 18 upper lid 19 grip 20 protrusion 21 recess 22 front supporter 23 rear supporter 24 motor housing right 25 motor housing left 26 sound deadening box 27 sound deadening lid 28 filter 29 discharge path 30 housing 31 discharge port 32 air duct 33 communicating section 34 communicating port 35 opening 36 space 37 space forming section 38 space forming rib 39 space forming face 40 sealable member 41 upper cover 42 cap 43 dust box 44 bottom lid 45 first stage filter 46 extension part 47 second stage filter 48 dust removing section 49 motor 50 cyclone space 51 dust collecting path 52 dust accumulation space 53 slant part 54 tube
Claims (5)
- An electric vacuum cleaner comprising:a blower that sucks air for generating suction wind;a dust collector for collecting dust sucked by the suction wind; anda communicating section disposed between the blower and the dust collector and forming an air duct through which the air flows from the dust collector to the blower,
wherein a plurality of openings is formed in the communicating section, and a space is formed adjacently to the communicating section. - The electric vacuum cleaner of claim 1, wherein the space is formed of the communicating section and a space-forming section that is formed of a space-forming rib formed in the communicating section for surrounding the plurality of openings and a space-forming face confronting the communicating section.
- The electric vacuum cleaner of claim 1, wherein the openings confront an intake port of the blower.
- The electric vacuum cleaner of claim 1, wherein the openings are formed in a vicinity of a communicating port that communicates with the air duct and the dust collector.
- The electric vacuum cleaner of claim 2, wherein a sealable member is disposed between the space-forming rib and the space- forming face for preventing the suction wind from leaking.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010201644A JP2012055499A (en) | 2010-09-09 | 2010-09-09 | Vacuum cleaner |
PCT/JP2011/004661 WO2012032721A1 (en) | 2010-09-09 | 2011-08-23 | Electric vacuum cleaner |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2614759A1 true EP2614759A1 (en) | 2013-07-17 |
Family
ID=45810333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11823202.4A Withdrawn EP2614759A1 (en) | 2010-09-09 | 2011-08-23 | Electric vacuum cleaner |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2614759A1 (en) |
JP (1) | JP2012055499A (en) |
CN (1) | CN103096772A (en) |
TW (1) | TW201215360A (en) |
WO (1) | WO2012032721A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2523815A (en) * | 2014-03-07 | 2015-09-09 | Techtronic Floor Care Tech Ltd | Surface cleaning apparatus |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5903544B2 (en) * | 2012-09-25 | 2016-04-13 | パナソニックIpマネジメント株式会社 | Electric vacuum cleaner |
JP2014083229A (en) * | 2012-10-24 | 2014-05-12 | Mitsubishi Electric Corp | Vacuum cleaner |
JP6073178B2 (en) * | 2013-04-23 | 2017-02-01 | 日立アプライアンス株式会社 | Electric vacuum cleaner |
JP6111432B2 (en) * | 2014-01-31 | 2017-04-12 | パナソニックIpマネジメント株式会社 | Electric vacuum cleaner |
KR102560970B1 (en) * | 2016-03-31 | 2023-07-31 | 엘지전자 주식회사 | Cleaner |
JP7329729B2 (en) * | 2019-08-28 | 2023-08-21 | パナソニックIpマネジメント株式会社 | Dust collector and vacuum cleaner |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55143146U (en) * | 1979-03-31 | 1980-10-14 | ||
JPH05220072A (en) * | 1992-02-13 | 1993-08-31 | Toshiba Corp | Vacuum cleaner |
KR101353311B1 (en) * | 2005-12-27 | 2014-01-24 | 삼성전자주식회사 | Vacuum Cleaner |
JP4879238B2 (en) * | 2008-02-20 | 2012-02-22 | 三菱電機株式会社 | Vacuum cleaner |
JP5184297B2 (en) * | 2008-10-22 | 2013-04-17 | シャープ株式会社 | Electric vacuum cleaner |
-
2010
- 2010-09-09 JP JP2010201644A patent/JP2012055499A/en active Pending
-
2011
- 2011-08-23 CN CN2011800435101A patent/CN103096772A/en active Pending
- 2011-08-23 WO PCT/JP2011/004661 patent/WO2012032721A1/en active Application Filing
- 2011-08-23 TW TW100130143A patent/TW201215360A/en unknown
- 2011-08-23 EP EP11823202.4A patent/EP2614759A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2012032721A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2523815A (en) * | 2014-03-07 | 2015-09-09 | Techtronic Floor Care Tech Ltd | Surface cleaning apparatus |
Also Published As
Publication number | Publication date |
---|---|
TW201215360A (en) | 2012-04-16 |
WO2012032721A1 (en) | 2012-03-15 |
JP2012055499A (en) | 2012-03-22 |
CN103096772A (en) | 2013-05-08 |
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