CN1697966A - Noise reducing device - Google Patents
Noise reducing device Download PDFInfo
- Publication number
- CN1697966A CN1697966A CNA2004800001615A CN200480000161A CN1697966A CN 1697966 A CN1697966 A CN 1697966A CN A2004800001615 A CNA2004800001615 A CN A2004800001615A CN 200480000161 A CN200480000161 A CN 200480000161A CN 1697966 A CN1697966 A CN 1697966A
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- China
- Prior art keywords
- noise
- hole
- mentioned
- sound
- thermal cross
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- 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
- G10K11/04—Acoustic filters ; Acoustic resonators
Abstract
A conventional noise reducing device requires two filters and two resonance chambers, resulting in the device becoming large-sized and complicated. Therefore, there has been a problem that the device is difficult to incorporate into a home electric appliance. The noise reducing device of the invention comprises a noise reducing plate (11) disposed in the vicinity of a noise source (5) and opposed to the latter, and a plurality of sound-heat transducing holes (12) formed in the noise reducing plate (11) for transducing sound energy into heat energy, each sound-heat transducing hole (12) comprising a contraction chamber (13) disposed on the side of the noise source (5) and having a first hole width, and an expansion chamber (14) disposed on the side opposite to the noise source (5) side and having a second hole width greater than the first hole width; therefore, the device is simple in arrangement, and reduction in size and weight of the device is realized. As a result, incorporation into a home electric appliance, such as a sweeper, becomes easier, and it becomes possible to provide a superior, almost noiseless home electric appliance at low cost.
Description
Technical field
The noise reducing device that the present invention relates to make the output sound pressure level of noise to reduce.
Technical background
As noise reducing device in the past, for example, open the described device of flat 7-334163 communique by known the spy.In this noise reducing device in the past, at the rear as the motor of noise source, devices spaced apart disposes the 1st and the 2nd filtrator, have the 1st resonant chamber that is formed between motor and the 1st filtrator, and be formed on the 2nd resonant chamber between the 1st filtrator and the 2nd filtrator.Like this, can pass through the 1st and the 2nd resonant chamber and the 1st and the 2nd filtrator, reduce the noise that produces from motor.
Yet noise reducing device in the past is because need 2 filtrators and 2 resonant chambers, so the device shape is big and complicated.Therefore, there is the problem that is difficult to be assembled in the household appliances.In addition, because need a lot of parts, so there is the high problem of production cost.
The objective of the invention is to, solve such problem, providing a kind of can reduce the noise reducing device of noise effectively with simple formation.
Summary of the invention
Noise reducing device of the present invention is characterized in that, has: noise reduces plate, this noise reduce plate be arranged on noise source near, dispose relative with above-mentioned noise source; A plurality of sound thermal cross overs hole, this a plurality of sound thermal cross overs hole are formed on above-mentioned noise and reduce on the plate, and sound equipment can be converted to heat energy; Above-mentioned each sound thermal cross over hole has: retract chamber and expanding chamber, this retract chamber are arranged on above-mentioned noise source, and it is wide to have first hole; This expanding chamber is arranged on an opposite side of above-mentioned noise source, and it is wide to have second hole bigger than the wide degree in above-mentioned first hole.
Description of drawings
Fig. 1 is the cut-away side view of the suction cleaner of the expression noise reducing device of using relevant embodiment 1.
Fig. 2 is the stereographic map of the shape in expression sound thermal cross over hole.
Fig. 3 (A), (B) are the charts of measured result of the noise of expression motor.
Fig. 4 is the front elevation that the expression noise reduces the outward appearance of plate.
Fig. 5 (A) is the cross-sectional view of the A-A line of Fig. 4.(B) be the cross-sectional view of the B-B line of Fig. 4.
Fig. 6 is the cut-away side view of the suction cleaner of the expression noise reducing device of using relevant embodiment 2.
Fig. 7 is the cut-away side view of the suction cleaner of the expression noise reducing device of using relevant embodiment 3.
Fig. 8 is the front elevation that the expression noise reduces the outward appearance of plate.
Fig. 9 (A) is the cross-sectional view of the C-C line of Fig. 8, (B) is the cross-sectional view of the D-D line of Fig. 8.
Figure 10 is the cut-open view that expression is configured in the noise reducing device of relevant embodiment 4 example on the wind path of airflow.
Figure 11 is the cut-open view of the example of the expression wind path that the noise reducing device of relevant embodiment 5 is assembled into airflow.
Embodiment
Below, with reference to accompanying drawing, the preferred forms of relevant noise reducing device of the present invention is described.
Fig. 1 is the cut-away side view of the suction cleaner of the expression noise reducing device 10 of using relevant embodiment 1.As shown in the drawing, suction cleaner 1 has air entry 3, dust storage chamber 4, motor 5, noise reducing device 10 and exhausr port 6, and this air entry 3 is equipped with the pipe 2 that is used to attract rubbish; This dust storage chamber 4 is arranged on the rear of air entry 3, collects rubbish; This motor 5 is arranged on the rear of dust storage chamber 4, produces the airflow that is used to attract rubbish; This noise reducing device 10 is configured in the rear of motor 5, reduces the noise that is produced by motor 5; This exhausr port 6 is configured in the rear of noise reducing device 10, will discharge by the airflow of noise reducing device 10.
In addition, retract chamber 13 and expanding chamber 14 not only are defined in cylindric, also can be corner post shape, circular cone shape, pyramid shape.
Then, the action with regard to present embodiment describes.If the user opens the step switch portion of pipe on 2 that be arranged on (not shown go out), CD-ROM drive motor 5 then is installed in the fan rotation on the motor 5, produces airflow in the inside of suction cleaner 1.Taking advantage of this airflow by managing 2 rubbish that attract, arriving dust storage chamber 4, be collected in the paper bag 7 that is installed on the dust storage chamber 4.The airflow that passes the trickle gap of paper bag 7 arrives the noise reduction plate 11 of noise reducing device 10.In addition, the noise that is produced by motor 5 arrives noise and reduces plate 11 also as sound wave.The sound equipment of noise can be reduced the sound thermal cross over hole 12 that forms on the plate 11 at noise and is converted to heat energy, reduces the output sound pressure level of noise.In addition, the airflow that arrives noise reduction plate 11 passes sound thermal cross over hole 12, is discharged from from exhausr port 6.
Can pass through sound thermal cross over hole 12, the sound equipment of noise can be converted to heat energy be based on following principle.That is, enter under the situation in sound thermal cross over hole 12 at the sound wave of noise, at first, sound wave is squeezed in retract chamber 13.Then, sound wave enters expanding chamber 14, because the wide degree in wide hole than retract chamber 13, the hole of expanding chamber 14 is big, so in case just expansion suddenly of the sound wave that is squeezed into.Expand by this, the sound equipment of noise can be converted into heat energy.Consequently, can reduce the output sound pressure level of noise effectively.Here, can be by the noise of sound thermal cross over hole 12 reductions, the sound of the frequency band that only limits to stipulate.Reducible frequency band is specific by the shape in sound thermal cross over hole 12.
As shown in Figure 2, if the aperture area in sound thermal cross over hole 12 is S
0, retract chamber 13 Kong Kuanwei d
0, retract chamber 13 the degree of depth be L
0, expanding chamber 14 volume be V
1, the light velocity is c, then reducible frequency f
0For
f
0＝(c/2π)(S
0/(V
1(L
0+0.82/d
0)))
1/2。
Here, the noise that is produced by motor 5 noise sources such as grade is made of sound and peak value sound at random, isolates sound at random acoustically from the peak value sound, can hear as harsh noise.Therefore, the frequency of the peak value sound that will comprise in noise with the size that derives, constitutes sound thermal cross over hole 12 as target from following formula, in view of the above, the peak value sound can be removed from noise, improves the tonequality of noise effectively.
The peak value sound of motor 5 is that the blade of the fan of rotation passes frequency tone.This frequency f can be tried to achieve (n=motor revolution, z: the number of blade) by f=nz.As the specification of motor 5, if supposition motor gyro frequency is 600Hz, the number of blade is 8, and then blade passing frequency sound (being the peak value sound) is 4800Hz.In addition, even, also produce the peak value sound as the 9600Hz of 2 times of the frequencies of 4800Hz.Fig. 3 (A) is the result of the noise of actual measurement motor 5.By this measured value, also can judge at 4800Hz and 9600Hz, there is the peak value sound.
In order to reduce this two peak value sounds, in the present embodiment,, hole wide different 2 kinds of sound thermal cross over hole 12a, 12b are set as Fig. 4 and shown in Figure 5.Sound thermal cross over hole 12a, the Kong Kuanwei 3.1mm of its retract chamber 13a, the degree of depth of retract chamber 13a is 2.1mm, the Kong Kuanwei 12.0mm of expanding chamber 14a, the degree of depth of expanding chamber 14a is 2.1mm.If with these size substitution following formula, then f
0Be about 4800Hz.Therefore, the sound equipment of the peak value sound of 4800Hz can be converted to heat energy by sound thermal cross over hole 12a, can remove the peak value sound of 4800Hz effectively.
In addition, sound thermal cross over hole 12b, the Kong Kuanwei 3.2mm of its retract chamber 13b, the degree of depth of retract chamber 13b is 2.1mm, the Kong Kuanwei 6.0mm of expanding chamber 14b, the degree of depth of expanding chamber 14b is 2.1mm.If with these size substitution following formula, then f
0Be about 9600Hz.Therefore, the sound equipment of the peak value sound of 9600Hz can be converted to heat energy by sound thermal cross over hole 12b, can remove the peak value sound of 9600Hz effectively.
As mentioned above, by being arranged on two kinds of sound thermal cross over hole 12a, 12b on the noise reduction plate 11, can remove these two kinds of peak value sounds of 4800Hz and 9600Hz.Consequently, shown in the measured value of Fig. 3 (B), can obtain not have the mild noise properties of peak value sound, significantly improve the tonequality of noise.
In addition, wide different sound thermal cross over hole 12, hole not only is defined in two kinds, also can more than three kinds.In this case, can remove peak value sound more than 3.
As the above-mentioned detailed description of doing, in the present embodiment,,, realized the miniaturization and of device so device constitutes simply because be to constitute noise reducing device 10 by noise reduction plate 11 and sound thermal cross over hole 12.Its result is, the assembling to the such household appliances of suction cleaner is become easily, can provide the household appliances of the few high-quality of noise with low cost.
The noise reducing device of relevant embodiment 2 then, is described.Fig. 6 is the cut-away side view of the suction cleaner of the expression noise reducing device 20 of using relevant embodiment 2.This embodiment 2 is that with the difference of embodiment 1 shown in Figure 1 noise reduces plate 11 and surrounds motors 5, is configured to the case shape.Identical or be equal to about other formation and embodiment 1.In addition, for giving identical symbol, omit its explanation with embodiment 1 component part identical or that be equal to.
The noise reducing device 20 of present embodiment reduces plates 11 encirclement motors 5 by 5 noises that are configured in (rear, right side side, left side side, below, top) around the motor 5.Therefore, between noise reduction plate 11 and motor 5, constitute sound damping chamber, propagate in sound damping chamber at the noise that motor 5 produces, by reduce the peak value sound (that is, the sound equipment with the peak value sound can be converted to heat energy) that noise is removed in a plurality of sound thermal cross overs hole 12 that forms on the plate 11 at noise.In addition, the airflow that produces at motor 5 passes sound thermal cross over hole 12, is discharged from from exhausr port 6.
Its result is, can improve the tonequality of the noise that is produced by motor 5, reduces the output sound pressure level of noise effectively.Particularly, in the present embodiment, because reduce the sound damping chamber that forms between plate 11 and the motor 5 as seal cavity at noise, so the sound wave of the noise that is produced by motor 5 can not leak into the outside, but in sound damping chamber, propagate, can reduce any one of a plurality of sound thermal cross overs hole 12 on the plate 11 by being arranged on noise, remove the peak value sound effectively.
As mentioned above, in the present embodiment because be have by noise reduce plate 11 surround motors 5 around so simple formation, so so long as than the space of motor 5 big circles, the noise reducing device 20 of can packing into.Its result is, makes to the such household appliances assembling noise reducing device 20 of suction cleaner to become easily, can provide the household appliances of the few high-quality of noise with low cost.
In addition, the box shape that is formed by a plurality of noises reduction plates 11 not only is defined in rectangular shape, also can be cylindrical shape or semi-spherical shape.In addition, in the front of motor 5, also can dispose noise and reduce plate 11.In this case, 6 faces reduce plate 11 coverings by noise around the motor 5, have further improved noise and have reduced effect.
The noise reducing device of relevant embodiment 3 then, is described.Fig. 7 is the cut-away side view of the suction cleaner of the expression noise reducing device 30 of using relevant embodiment 3.This embodiment 3 is that with the difference of embodiment 1 shown in Figure 1 noise reduces plate 11 and surrounds motors 5, is configured to the case shape; Reducing the sound thermal cross over hole 12 that forms on the plate 11 at noise is the hole that the end is arranged; Outside in that noise reduces plate 11 is provided with spongiform shock absorption layer 31.Identical or be equal to about other formation and embodiment 1.In addition, for giving identical symbol, omit its explanation with embodiment 1 component part identical or that be equal to.
The noise reducing device 30 of present embodiment reduces plates 11 encirclement motors 5 by 5 noises that are configured in (rear, right side side, left side side, below, top) around the motor 5.Therefore, reduce between plate 11 and the motor 5 at noise, constitute sound damping chamber, the sound wave of the noise that is produced by motor 5 is propagated in sound damping chamber, enters into sound thermal cross over hole 12.
In addition, be disposed at motor 5 below noise reduce on the plate 11 ventilating opening 32 be set, the airflow that is produced by motor 5 passes ventilating opening 32, is discharged from from exhausr port 6.
As Fig. 8 and shown in Figure 9, on a plurality of sound thermal cross overs hole 12 that is formed on the noise reduction plate 11, there are hole wide different two kinds of sound thermal cross over hole 12a, 12b.As mentioned above, sound thermal cross over hole 12a can remove the peak value sound of 4800Hz, and sound thermal cross over hole 12b can remove the peak value sound of 9600Hz.Therefore, the sound wave of the noise of propagating in sound damping chamber can be removed two kinds of peak value sounds (that is, the sound equipment with the peak value sound can be converted to heat energy) effectively by entering sound thermal cross over hole 12a, 12b.Its result is, can improve the tonequality of the noise that is produced by motor 5, reduces the output sound pressure level of noise effectively.
Particularly, in the present embodiment, reduce the sound damping chamber that forms between plate 11 and the motor 5 as seal cavity because be at noise, so the sound wave of the noise that is produced by motor 5 can not leak into the outside, but in sound damping chamber, propagate, can remove the peak value sound effectively by being arranged on any one in a plurality of sound thermal cross overs hole 12 on the noise reduction plate 11.In addition, the vibration that the noise that is produced when the sound wave of noise is propagated in sound damping chamber reduces plate 11 can absorb effectively by spongiform shock absorption layer 31.Therefore, can suppress effectively to reduce the radiation of sound that the vibration of plate 11 causes to the outside because of noise.
As mentioned above, in the present embodiment because be have by noise reduce plate 11 surround motors 5 around so simple formation, so so long as than the space of motor 5 big circles, the noise reducing device 30 of can packing into.Its result is, makes to the such household appliances assembling noise reducing device 30 of suction cleaner to become easily, can provide the household appliances of the few high-quality of noise with low cost.
In addition, the box shape that is formed by a plurality of noises reduction plates 11 not only is defined in rectangular shape, also can be cylindrical shape or semi-spherical shape.In addition, in the front of motor 5, also can dispose noise and reduce plate 11.In this case, 6 faces reduce plate 11 coverings by noise around the motor 5, have further improved noise and have reduced effect.
The noise reducing device of relevant embodiment 4 then, is described.Figure 10 is the cut-open view that expression is configured in the noise reducing device 40 of relevant embodiment 4 example on the wind path 41 of airflow.In addition, for giving identical symbol, omit its explanation with embodiment 1 component part identical or that be equal to.
As shown in the drawing, the noise that noise reducing device 40 has relative configuration with airflow reduces plate 11 and a plurality of sound thermal cross overs hole 12, and this a plurality of sound thermal cross overs hole 12 is formed on noise and reduces on the plate 11, and sound equipment can be converted to heat energy.Each sound thermal cross over hole 12 has retract chamber 13 and expanding chamber 14, and this retract chamber 13 is arranged on the light incident side of airflow; This expanding chamber 14 is arranged on the exiting side of airflow.Here, it constitutes, and each sound thermal cross over hole 12 is a through hole, compares with the hole of retract chamber 13 is wide simultaneously, and the wide degree in the hole of expanding chamber 14 is big.
Because noise reducing device 40 be above-mentioned formation, be formed at noise and reduce each sound thermal cross over hole 12 on the plate 11, the peak value sound (that is, the sound equipment with the peak value sound can be converted to heat energy) of removing noise so enter with the sound wave of the overlapping noise of airflow.Its result is, can improve the tonequality with the overlapping noise of airflow, reduces the output sound pressure level of noise effectively.
As mentioned above, in the present embodiment,,, realized the miniaturization and of device so device constitutes simply because be to constitute noise reducing device 40 by noise reduction plate 11 and sound thermal cross over hole 12.Its result is, becomes easily to these devices of assembling such as pipe of suction cleaner, can provide the household appliances of the few high-quality of noise with low cost.
The noise reducing device of relevant embodiment 5 then, is described.Figure 11 is expression with pack into the cut-open view of the example on the wind path 51 of airflow of the noise reducing device 50 of relevant embodiment 5.In addition, to giving identical symbol, omit its explanation with embodiment 1 component part identical or that be equal to.
As shown in the drawing, noise reducing device 50 has noise and reduces wall 52 and a plurality of sound thermal cross overs hole 12, and this noise reduces at least a portion that wall 52 constitutes the wind path 51 of airflow; This a plurality of sound thermal cross overs hole 12 is formed on noise and reduces on the wall 52, and sound equipment can be converted to heat energy.Each sound thermal cross over hole 12 has retract chamber 13 and expanding chamber 14, and this retract chamber 13 is arranged on the light incident side of airflow; This expanding chamber 14 is arranged on the exiting side of airflow.Here, it constitutes, and each sound thermal cross over hole 12 is compared with the hole of retract chamber 13 is wide for the hole at the end is arranged simultaneously, and the wide degree in the hole of expanding chamber 14 is big.
Because noise reducing device 50 be above-mentioned formation, be formed at noise and reduce each sound thermal cross over hole 12 on the wall 52, the peak value sound (that is, the sound equipment with the peak value sound can be converted to heat energy) of removing noise so enter with the sound wave of the overlapping noise of airflow.Its result is, can improve the tonequality with the overlapping noise of airflow, reduces the output sound pressure level of noise effectively.
As mentioned above, in the present embodiment,,, realized the miniaturization and of device so device constitutes simply because be to constitute noise reducing device 50 by noise reduction wall 52 and sound thermal cross over hole 12.Its result is, these devices of assembling such as pipe to suction cleaner are become easily, can provide the household appliances of the few high-quality of noise with low cost.
In addition, the present invention is not limited only to above-mentioned embodiment, in the scope that does not break away from purport of the present invention, can carry out various changes.In addition, in the above-described embodiment, represented to apply the present invention to the example of suction cleaner, but be not limited to suction cleaner, for example, all produce on the machine of noise can be applied in scavenger fan or suction cleaner etc.
The possibility of utilizing on the industry
As mentioned above, relevant noise reducing device of the present invention can be applied in ventilation fan or dust suction All produce devices etc. on the machine of noise.
Claims (8)
1. noise reducing device is characterized in that having:
Noise reduces plate, this noise reduce plate be arranged on noise source near, dispose relative with above-mentioned noise source;
A plurality of sound thermal cross overs hole, this a plurality of sound thermal cross overs hole are formed on above-mentioned noise and reduce on the plate, and sound equipment can be converted to heat energy;
Above-mentioned each sound thermal cross over hole has: retract chamber and expanding chamber, this retract chamber are arranged on above-mentioned noise source, and it is wide to have first hole; This expanding chamber is arranged on an opposite side of above-mentioned noise source, and it is wide to have second hole bigger than the wide degree in above-mentioned first hole.
2. noise reducing device as claimed in claim 1 is characterized in that, above-mentioned each sound thermal cross over hole is the through hole that the airflow that produced by above-mentioned noise source is passed through.
3. noise reducing device as claimed in claim 1 or 2, it is characterized in that, above-mentioned a plurality of sound thermal cross overs hole is classified as the group of wide different at least 2 kinds in hole, and the sound equipment that sound thermal cross over hole of each group will be included in the peak value sound of the various frequency band in the noise that is produced by above-mentioned noise source can be converted to heat energy.
4. noise reducing device as claimed in claim 3 is characterized in that, the shape in above-mentioned each sound thermal cross over hole is S at aperture area
0, above-mentioned retract chamber Kong Kuanwei d
0, above-mentioned retract chamber the degree of depth be L
0, above-mentioned expanding chamber volume be V
1, the light velocity is c, the frequency of above-mentioned peak value sound is f
0Situation under, have
f
0=(c/2 π) (S
0/ (V1 (L
0+ 0.82/d
0)))
1/2Relation.
5. as each the described noise reducing device in the claim 1 to 4, it is characterized in that above-mentioned noise reduces plate and surrounds above-mentioned noise source, is configured to box-like.
6. noise reducing device as claimed in claim 5 is characterized in that, above-mentioned each sound thermal cross over hole is the hole that the end is arranged, and the outside that reduces plate at above-mentioned noise is provided with spongiform sound absorbing layer.
7. noise reducing device is characterized in that having:
Noise reduces plate, and this noise reduces plate and is arranged on the wind path of airflow dispose relative with above-mentioned airflow;
A plurality of sound thermal cross overs hole, this a plurality of sound thermal cross overs hole are formed on above-mentioned noise and reduce on the plate, and sound equipment can be converted to heat energy;
Above-mentioned each sound thermal cross over hole has: retract chamber and expanding chamber, and this retract chamber is arranged on the light incident side of above-mentioned airflow, and it is wide to have first hole; This expanding chamber is arranged on the exiting side of above-mentioned airflow, and it is wide to have second hole bigger than the wide degree in above-mentioned first hole.
8. noise reducing device is characterized in that having:
Noise reduces wall, and this noise reduces at least a portion that wall constitutes the wind path of airflow;
A plurality of sound thermal cross overs hole, this a plurality of sound thermal cross overs hole are formed on above-mentioned noise and reduce on the wall, and sound equipment can be converted to heat energy;
Above-mentioned each sound thermal cross over hole has: retract chamber and expanding chamber, this retract chamber are arranged on above-mentioned airflow side, and it is wide to have first hole; This expanding chamber is arranged on the opposition side of above-mentioned airflow side, and it is wide to have second hole bigger than the wide degree in above-mentioned first hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003071698A JP2004279779A (en) | 2003-03-17 | 2003-03-17 | Noise reducing device |
| JP071698/2003 | 2003-03-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1697966A true CN1697966A (en) | 2005-11-16 |
| CN100397483C CN100397483C (en) | 2008-06-25 |
Family
ID=33027698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800001615A Expired - Fee Related CN100397483C (en) | 2003-03-17 | 2004-03-12 | Noise reducing device |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2004279779A (en) |
| KR (2) | KR20050006170A (en) |
| CN (1) | CN100397483C (en) |
| HK (1) | HK1084442A1 (en) |
| WO (1) | WO2004083799A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101084819B (en) * | 2006-06-08 | 2010-12-22 | 乐金电子(天津)电器有限公司 | Vacuum cleaner |
| CN102810933A (en) * | 2011-06-03 | 2012-12-05 | 乐金电子(天津)电器有限公司 | Muffler, motor casing and dust collector with motor casing |
| CN103169426A (en) * | 2013-04-12 | 2013-06-26 | 天佑电器（苏州）有限公司 | Exhaust air flue of dust collector |
| CN104159488A (en) * | 2012-02-24 | 2014-11-19 | 松下电器产业株式会社 | Electric vacuum cleaner |
| CN105534409A (en) * | 2016-01-28 | 2016-05-04 | 江苏美的清洁电器股份有限公司 | Air duct system of dust collector and dust collector with air duct system |
| CN112567452A (en) * | 2018-08-17 | 2021-03-26 | 富士胶片株式会社 | Sound insulation structure and sound insulation unit |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100857226B1 (en) * | 2007-10-04 | 2008-09-05 | 주식회사 롯데기공 | The fuel mixer for the gas boiler |
| KR100961730B1 (en) * | 2008-04-16 | 2010-06-10 | 대지금속 주식회사 | Inhalation apparatus having noise reduction structure |
| WO2013139838A1 (en) * | 2012-03-22 | 2013-09-26 | Alfred Kärcher Gmbh & Co. Kg | Suction unit and suction machine |
| CN103377650B (en) * | 2012-04-23 | 2016-04-06 | 淮南矿业(集团)有限责任公司 | Quieter |
| DE102012207347A1 (en) * | 2012-05-03 | 2013-11-07 | BSH Bosch und Siemens Hausgeräte GmbH | NOISE EXHAUSTING DEVICE FOR A HOME APPLIANCE |
| WO2015043617A1 (en) | 2013-09-24 | 2015-04-02 | Alfred Kärcher Gmbh & Co. Kg | Cleaning device |
| KR102457135B1 (en) | 2018-01-09 | 2022-10-19 | 엘지전자 주식회사 | Cleaner |
| KR102367147B1 (en) * | 2020-08-05 | 2022-02-25 | 세세건설 주식회사 | Sound absorbent apparatus |
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| JPS4428137Y1 (en) * | 1964-08-28 | 1969-11-22 | ||
| JPH0271300A (en) * | 1988-05-06 | 1990-03-09 | Toushiyou Eng Kk | Sound absorbing body and sound absorbing duct using this body |
| GB8817669D0 (en) * | 1988-07-25 | 1988-09-01 | Short Brothers Ltd | Means for attenuating sound energy |
| JPH02307418A (en) * | 1989-05-23 | 1990-12-20 | Matsushita Electric Ind Co Ltd | Suction pipe for vacuum cleaner |
| CN2128864Y (en) * | 1992-05-16 | 1993-03-31 | 浙江大学流体工程研究所 | Low noise aspirator |
| US5471707A (en) * | 1993-05-29 | 1995-12-05 | Daewoo Electronics Co., Ltd. | Assembly for a vacuum cleaner having a sound-absorbing system |
| JP3346084B2 (en) * | 1995-03-27 | 2002-11-18 | 東海ゴム工業株式会社 | Sound absorbing device |
| JP2000214860A (en) * | 1999-01-21 | 2000-08-04 | Tokai Rubber Ind Ltd | Resonating-type sound absorbing body |
-
2003
- 2003-03-17 JP JP2003071698A patent/JP2004279779A/en active Pending
-
2004
- 2004-03-12 KR KR10-2004-7016732A patent/KR20050006170A/en active Application Filing
- 2004-03-12 WO PCT/JP2004/003311 patent/WO2004083799A1/en not_active Application Discontinuation
- 2004-03-12 KR KR1020067025739A patent/KR20070005740A/en not_active Application Discontinuation
- 2004-03-12 CN CNB2004800001615A patent/CN100397483C/en not_active Expired - Fee Related
-
2006
- 2006-04-20 HK HK06104730.1A patent/HK1084442A1/en not_active IP Right Cessation
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101084819B (en) * | 2006-06-08 | 2010-12-22 | 乐金电子(天津)电器有限公司 | Vacuum cleaner |
| CN102810933A (en) * | 2011-06-03 | 2012-12-05 | 乐金电子(天津)电器有限公司 | Muffler, motor casing and dust collector with motor casing |
| CN104159488A (en) * | 2012-02-24 | 2014-11-19 | 松下电器产业株式会社 | Electric vacuum cleaner |
| CN103169426A (en) * | 2013-04-12 | 2013-06-26 | 天佑电器（苏州）有限公司 | Exhaust air flue of dust collector |
| CN103169426B (en) * | 2013-04-12 | 2016-04-13 | 天佑电器（苏州）有限公司 | A kind of exhaust air flue of dust catcher |
| CN105534409A (en) * | 2016-01-28 | 2016-05-04 | 江苏美的清洁电器股份有限公司 | Air duct system of dust collector and dust collector with air duct system |
| CN112567452A (en) * | 2018-08-17 | 2021-03-26 | 富士胶片株式会社 | Sound insulation structure and sound insulation unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004279779A (en) | 2004-10-07 |
| CN100397483C (en) | 2008-06-25 |
| KR20070005740A (en) | 2007-01-10 |
| KR20050006170A (en) | 2005-01-15 |
| WO2004083799A1 (en) | 2004-09-30 |
| HK1084442A1 (en) | 2006-07-28 |
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