EP1785080B1 - Muffler Device for Vacuum Cleaner and Vacuum Cleaner with the same - Google Patents
Muffler Device for Vacuum Cleaner and Vacuum Cleaner with the same Download PDFInfo
- Publication number
- EP1785080B1 EP1785080B1 EP20060123600 EP06123600A EP1785080B1 EP 1785080 B1 EP1785080 B1 EP 1785080B1 EP 20060123600 EP20060123600 EP 20060123600 EP 06123600 A EP06123600 A EP 06123600A EP 1785080 B1 EP1785080 B1 EP 1785080B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum cleaner
- muffler device
- motor
- side wall
- air exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
Description
- The present invention relates to a muffler device used for vacuum cleaner and a vacuum cleaner with the same.
- The known vacuum cleaner basically includes a suction opening, a dedusting chamber, a motor and an air exhaust outlet, wherein said air exhaust outlet has a grid structure which functions only as preventing dusts from entering into the housing of the vacuum cleaner, but not reducing the noise. Therefore, such a conventional vacuum cleaner, especially a high-power vacuum cleaner, generates a lot of noise during the operation.
-
DE 41 00 858 A1 - Another arrangement for reducing noise in vacuum cleaners is given by
GB 45 9644 - An object of the present invention is to provide a muffler device for vacuum cleaner, which is arranged in an air exhaust passage extending from a motor to an air exhaust outlet and can reduce noise generated by the vacuum cleaner during the operation.
- In the present invention, a muffler device designed for vacuum cleaner with an air exhaust outlet behind a motor, is arranged in an air exhaust passage extending from the motor to the air exhaust outlet, and comprises a rear wall for holding the motor, an outer side wall extending outwardly from the periphery of said rear wall, an inner side wall parallel to the outer side wall and extending outwardly from the periphery of said rear wall, and a receiving cavity defined by said rear wall, said outer side wall and said inner side wall for receiving a motor of the vacuum cleaner, wherein a plurality of elongate tubes are provided between said outer side wall and inner side wall, and extend through said muffler device.
- In a second explanatory embodiment not forming part with the present invention, a muffler device designed for vacuum cleaner with an air exhaust outlet behind a motor, is in a shape of rectangular plate arranged in an air exhaust passage extending from the motor to the air exhaust outlet, and provided with a plurality of elongate tubes, wherein the elongate tubes extend through the plate, and their axes are parallel to the axis of the motor.
- In a third explanatory embodiment not forming part with the present invention, a muffler device designed for vacuum cleaner with an air exhaust outlet above a motor, is also in a shape of rectangular plate arranged in an air exhaust passage extending from the motor to the air exhaust outlet, and provided with a plurality of elongate tubes, wherein the elongate tubes extend through the plate, and their axes are vertical to the axis of the motor.
- In a fourth explanatory embodiment not forming part with the present invention, a muffler device for vacuum cleaner is arranged in an air exhaust passage extending from a motor of the vacuum cleaner to an air exhaust outlet, and comprises a plate and a plurality of elongate tubes extending through the plate and projecting forwardly, said elongate tubes being regularly arranged.
- According to another aspect of the present invention, a vacuum cleaner is provided which includes a housing having an air exhaust outlet and a motor received in the housing, wherein a muffler device with the above features of first embodiment is arranged in an air exhaust passage extending from the motor to the air exhaust outlet.
- According to the present invention, a muffler device for vacuum cleaner is arranged in an air exhaust passage extending from a motor of the vacuum cleaner to an air exhaust outlet, and is provided with elongated tubes. Such an arrangement can improve the flexure quality of the air exhaust passage and result in energy loss of sound waves during diffusing so as to obtain the effect of reducing noise.
- Other objects and advantages of the invention will become apparent upon reading the following detailed description and upon reference to the drawings in which:
-
Fig. 1 is a perspective view of a first embodiment of a muffler device in accordance with the invention; -
Fig. 2 is a sectional side view of the muffler device according toFig. 1 , which is mounted between a motor and an air exhaust outlet in a vacuum cleaner; -
Fig. 3 is a sectional top view of the muffler device according toFig. 1 , which is mounted between a motor and an air exhaust outlet in the vacuum cleaner; -
Fig. 4 is a cross sectional view of the muffler device according toFig. 1 mounted in the vacuum cleaner, taken along a line A-A inFig. 2 ; -
Fig. 5 is a perspective view of a second embodiment of a muffler device not forming part with the present invention; -
Fig. 6 is a sectional side view of the muffler device according toFig. 5 , which is mounted between a motor and an air exhaust outlet in a vacuum cleaner; -
Fig. 7 is a sectional top view of the muffler device according toFig. 5 , which is mounted between a motor and an air exhaust outlet in the vacuum cleaner; -
Fig. 8 is a cross sectional view of the muffler device according toFig. 5 mounted in the vacuum cleaner, taken along a line B-B inFig. 6 ; -
Fig. 9 is a perspective view of a vacuum cleaner with a muffler device according toFig. 5 ; -
Fig. 10 is a sectional side view of a third embodiment of a muffler device not forming part with the present invention, with the device mounted between a motor and an air exhaust outlet in a vacuum cleaner; -
Fig. 11 is a sectional top view of the muffler device according toFig. 10 mounted in the vacuum cleaner; -
Fig. 12 is a cross sectional view of the muffler device according toFig. 10 mounted in the vacuum cleaner, taken along line C-C inFig. 6 ; -
Fig. 13 is a perspective view of a fourth embodiment of a muffler device not forming part with the present invention. -
Fig. 1 shows amuffler device 4 for vacuum cleaner according to a first embodiment of the invention. Themuffler device 4 is of a barrel shape and comprises arear wall 40 for holding a motor of the vacuum cleaner, anouter side wall 7 extending outwardly from the periphery of therear wall 40, aninner side wall 80 parallel to theouter side wall 7 and extending outwardly from the periphery of therear wall 40, and areceiving cavity 6 defined by therear wall 40, theouter side wall 7 and theinner side wall 80 for receiving the motor, wherein a plurality ofelongate tubes 5 are provided between theouter side wall 7 and theinner side wall 80, said elongate tubes extending through themuffler device 4. Theinner side wall 80 has a longitudinal length less than that of theouter side wall 7. Theelongate tubes 5 are adapted to extend parallel to the longitudinal direction D of the muffler device, uniformly distributed between the outer andinner side walls 7, 80 (also seeFig. 4 ), and have uniform diameters and lengths. For example, the diameters of the elongate tubes can vary from 2mm to 100mm, and the length can vary from 5 mm to 500mm. -
Figs. 2-4 show themuffler device 4 according toFig. 1 in different sectional views, which is mounted in a vacuum cleaner. The vacuum cleaner includes amotor 1 and ahousing 13 with anair exhaust outlet 2 located behind the motor. Themuffler device 4 is arranged in anair exhaust passage 3 extending from themotor 1 to theair exhaust outlet 2 of the vacuum cleaner, with theinner side wall 80 at a distance from the motor. -
Fig. 5 shows amuffler device 4 for vacuum cleaner. Themuffler device 4 is in a shape ofrectangular plate 8 with a plurality ofelongate tubes 5 provided in the upper end thereof (also seeFig. 8 ), the axes of the elongate tubes being parallel to the axis X of the motor 1 (seeFig. 6 ). Theplate 8 has adepressed portion 41 which projects backwardly below theelongated tubes 5. -
Figs. 6-8 show themuffler device 4 according toFig. 5 in different sectional views, which is mounted in a vacuum cleaner. The vacuum cleaner also includes amotor 1 and ahousing 13 with anair exhaust outlet 2 defined in arear portion 9 thereof, wherein theair exhaust outlet 2 is located behind the motor (similar toFigures 2-4 ). The muffler device is arranged in anair exhaust passage 3 extending from themotor 1 to theair exhaust outlet 2. Thedepressed portion 41 abuts against a rear end of themotor 1 for positioning the motor. As shown inFigures 6-7 , theair exhaust outlet 2 is in a form of array ofsmall holes 10 extending through therear portion 9 of thehousing 13. Thesesmall holes 10 are provided in the middle of therear portion 9 and staggered with respect to theelongate tubes 5 so as to increase the length of saidair exhaust passage 3 for reducing noise. - In addition,
Fig. 9 shows a perspective view of a vacuum cleaner with a muffler device according toFig. 5 . -
Figures 10-12 show amuffler device 4 for vacuum cleaner in different sectional views, which is mounted in a vacuum cleaner. In this embodiment, the muffler device is designed for a vacuum cleaner with anair exhaust outlet 2 defined in atop portion 12 ofhousing 13 above themotor 1, which is different from the first and second embodiments. Themuffler device 4 is arranged above the upper side of themotor 1. As shown herein, the muffler device is also in a shape of rectangular plate 8' with a plurality ofelongate tubes 5 provided in the right end thereof, wherein the axes of theelongate tubes 5 are vertical to the axis X of themotor 1. Theair exhaust outlet 2 is in a form of array of small holes 10' extending through thetop portion 12 ofhousing 13. The part of thetop portion 12 with these small holes 10' are located in one side of thetop portion 12 and staggered from theelongate tubes 5 for increasing the length of said air exhaust passage to reduce noise. As shown inFig. 12 , theelongate tubes 5 have different lengths. In this embodiment, themuffler device 4 has no depressed portion. -
Fig. 13 shows a perspective view of a muffler device for vacuum cleaner. When the muffler device is applied to a vacuum cleaner (not shown), it is also arranged in an air exhaust passage extending from a motor to an air exhaust outlet of the vacuum cleaner. The muffler device comprises aplate 8" with a plurality ofelongate tubes 5 extending therethrough and projecting outwardly, said elongate tubes being regularly arranged. When the muffler device is applied to a vacuum cleaner, theelongate tubes 5 are arranged in the periphery of the motor of the vacuum cleaner, and aportion 11 of theplate 8" surrounded by theelongate tubes 5 abuts against a rear end of the motor; As shown herein, theplate 8" is of a circular shape. However, the plate can also be of other shapes, such a rectangular shape. - In the above-mentioned embodiments, the
elongate tubes 5 have diameters between 2mm and 100mm and lengths between 5mm and 500mm. - According to the present invention, a muffler device for vacuum cleaner is arranged in an air exhaust passage extending from a motor of to an air exhaust outlet of the vacuum cleaner, and is provided with elongate tubes. Such an arrangement can improve flexure quality of the air exhaust passage to cause energy loss of sound waves during diffusing, and thus obtain the effect of reducing noise.
- The first embodiment disclosed above is illustrative only, as the invention may be modified and practiced in different but equivalent manners apparent to those skilled in the art having the benefit of the teachings herein. Furthermore, no limitations are intended to the details of construction or design herein shown, other than as described in the claims below. It is therefore evident that the particular embodiments disclosed above may be altered or modified and all such variations are considered within the scope of the invention. Accordingly, the protection sought herein is as set forth in the claims below.
Claims (8)
- A muffler device (4) for vacuum cleaner comprising:a rear wall (40) for holding a motor of the vacuum cleaner;an outer side wall (7) extending outwardly from the periphery of said rear wall (40);an inner side wall (80) parallel to the outer side wall (7) and extending outwardly from the periphery of said rear wall (40);a receiving cavity (6) defined by said rear wall (40), said outer side wall (7) and said inner side wall (80) for receiving the motor of the vacuum cleaner; anda plurality of elongate tubes (5) are provided between said outer side wall (7) and said inner side wall (80), and extend through said muffler device;characterized in that said inner side wall (80) has a longitudinal length less than that of said outer side wall (7).
- A muffler device for vacuum cleaner as claimed in claim 1, wherein each elongate tube (5) extends parallel to the longitudinal direction of the muffler device.
- A muffler device for vacuum cleaner as claimed in claim 1, wherein each elongate tube (5) has the same diameter and length.
- A muffler device for vacuum cleaner as claimed in claim 1, wherein said muffler device (4) is of a barrel shape, and said elongate tubes (5) are uniformly distributed between the outer and inner side walls (7, 80).
- A muffler device for vacuum cleaner as claimed in one of claims 1, 3-4, wherein said elongate tubes have diameters between 2mm and 100mm.
- A muffler device for vacuum cleaner as claimed in one of claims 1, 3-4, wherein said elongate tubes (5) have lengths between 5mm and 500mm.
- A muffler device for vacuum cleaner as claimed in claim 1, wherein a distance exists between said inner wall and the motor.
- A vacuum cleaner incorporating muffler device according to any one of the preceding claims.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2005100954468A CN100423678C (en) | 2005-11-10 | 2005-11-10 | Noise absorption unit of dust collector |
Publications (4)
Publication Number | Publication Date |
---|---|
EP1785080A2 EP1785080A2 (en) | 2007-05-16 |
EP1785080A8 EP1785080A8 (en) | 2007-08-01 |
EP1785080A3 EP1785080A3 (en) | 2008-04-09 |
EP1785080B1 true EP1785080B1 (en) | 2014-01-15 |
Family
ID=36746770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20060123600 Expired - Fee Related EP1785080B1 (en) | 2005-11-10 | 2006-11-07 | Muffler Device for Vacuum Cleaner and Vacuum Cleaner with the same |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1785080B1 (en) |
CN (1) | CN100423678C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015100426A1 (en) | 2015-01-13 | 2016-07-14 | Alfred Kärcher Gmbh & Co. Kg | Cleaning device and method for reducing noise in a cleaning device |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100837362B1 (en) | 2006-10-31 | 2008-06-12 | 삼성광주전자 주식회사 | Noise Absorbing Apparatus of Motor for Vacuum Cleaner |
DE102007046553A1 (en) * | 2007-09-28 | 2009-04-09 | BSH Bosch und Siemens Hausgeräte GmbH | Floor care appliance, in particular household vacuum cleaner |
CN103505149B (en) * | 2013-09-24 | 2016-01-20 | 苏州市铂恒电器有限公司 | Mute dust collector |
EP3244785B1 (en) | 2015-01-13 | 2019-04-10 | Alfred Kärcher SE & Co. KG | Suction device and method for operating a suction device |
EP3244784B1 (en) | 2015-01-13 | 2021-10-06 | Alfred Kärcher SE & Co. KG | Suction device |
WO2017108090A1 (en) * | 2015-12-21 | 2017-06-29 | Alfred Kärcher Gmbh & Co. Kg | Portable hard surface cleaning device |
CN111096708B (en) * | 2018-10-25 | 2022-03-01 | 广东美的白色家电技术创新中心有限公司 | Air outlet cover assembly of dust collector and dust collector with same |
DE102021128167A1 (en) * | 2021-10-28 | 2023-05-04 | Alfred Kärcher SE & Co. KG | Cleaning device and use of a flow deflection element |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE415875A (en) * | 1935-06-13 | |||
JPH01305916A (en) * | 1988-06-06 | 1989-12-11 | Hitachi Ltd | Electric cleaner |
DE4100858A1 (en) * | 1991-01-14 | 1992-07-16 | Siemens Ag | Vacuum cleaner with blower unit - has blower in inner housing capsule located in outer capsule, leaving flow space, and free space between outer capsule and housing |
JP3345992B2 (en) * | 1993-11-08 | 2002-11-18 | 松下電器産業株式会社 | Electric vacuum cleaner |
KR100190684B1 (en) * | 1996-05-17 | 1999-06-01 | 전주범 | Muffler chamber system of vacuum cleaner |
CN1179700C (en) * | 2002-12-12 | 2004-12-15 | 苏州金莱克清洁器具有限公司 | Silencer for dust collector |
CN1279868C (en) * | 2003-08-26 | 2006-10-18 | 苏州金莱克清洁器具有限公司 | Dust-collector noise silencer |
CN1256908C (en) * | 2003-08-26 | 2006-05-24 | 苏州金莱克清洁器具有限公司 | Dust-collector noise silencer |
CN2843327Y (en) * | 2005-11-10 | 2006-12-06 | 苏州金莱克清洁器具有限公司 | Silencer of dust collector |
-
2005
- 2005-11-10 CN CNB2005100954468A patent/CN100423678C/en active Active
-
2006
- 2006-11-07 EP EP20060123600 patent/EP1785080B1/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015100426A1 (en) | 2015-01-13 | 2016-07-14 | Alfred Kärcher Gmbh & Co. Kg | Cleaning device and method for reducing noise in a cleaning device |
Also Published As
Publication number | Publication date |
---|---|
CN100423678C (en) | 2008-10-08 |
EP1785080A2 (en) | 2007-05-16 |
EP1785080A8 (en) | 2007-08-01 |
EP1785080A3 (en) | 2008-04-09 |
CN1762296A (en) | 2006-04-26 |
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