CN110094774A - A kind of noise reducing type range hood - Google Patents
A kind of noise reducing type range hood Download PDFInfo
- Publication number
- CN110094774A CN110094774A CN201810096580.7A CN201810096580A CN110094774A CN 110094774 A CN110094774 A CN 110094774A CN 201810096580 A CN201810096580 A CN 201810096580A CN 110094774 A CN110094774 A CN 110094774A
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- noise reduction
- reduction cavity
- noise
- range hood
- blower
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- 230000009467 reduction Effects 0.000 claims abstract description 142
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims abstract description 5
- 239000003517 fume Substances 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims 1
- 230000008450 motivation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000010411 cooking Methods 0.000 description 4
- 230000036541 health Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of noise reducing type range hood, including blower rack and blower, blower cover board is equipped on front side of blower rack, the noise reduction hole being vertically successively spaced apart is provided on blower cover board, there is front shroud in the installed in front of blower cover board, the rear wall of front shroud, which is equipped with, to be vertically sequentially distributed and noise reduction cavity group corresponding with noise reduction hole, each noise reduction cavity group includes at least two noise reduction cavities, the volume size of noise reduction cavity in same noise reduction cavity group is along vertically successively unidirectional variation, and the change direction of the volume size of the noise reduction cavity in adjacent noise reduction cavity group is consistent, the driving mechanism that front shroud can be driven to make vertical motion with respect to blower cover board is installed on blower cover board.The present invention has the advantages that the noise reducing type range hood drives front shroud and blower cover board to move up and down by driving mechanism, noise reduction hole is set to correspond to the noise reduction cavity of different volumes, the resonant frequency of noise reduction cavity and the wind under range hood different stalls frequency of making an uproar can be made to match, to realize effective noise reduction.
Description
Technical field
The present invention relates to a kind of range hoods, more particularly, to a kind of noise reducing type range hood.
Background technique
The Chinese way of cooking can generate a large amount of oil smoke, and for the health for keeping kitchen environment cleaning and human body, range hood is had become
For one of essential equipment in Modern Family kitchen.In the process of running, air motion generates turbulent flow and issues range hood
Noise influences the culinary art experience and health of people.In order to reduce the noise of range hood, people have invented various with drop
The range hood for structure of making an uproar, such as the middle promulgated by the State Council of Patent No. 201310627547.X (Authorization Notice No. is CN 103697512B)
Sound-absorbing is arranged in the advance tuyere position of face spiral case in " a kind of silence exhauster for removing cooking fumes " disclosed in bright patent, the range hood
Micropore is arranged on sound-absorbing pod, and the rear panel in sound-absorbing pod face advance air port is obliquely installed for pod, makes it
Preceding oil smoke passway diameter between the advance air port of spiral case gradually becomes smaller from bottom to top, so that air-flow is accelerated, and be directed into
Enter the advance air port of spiral case.Although the micropore in the silence exhauster for removing cooking fumes plays the role of absorbing sound and lowering noise, rear panel inclination
Setting plays acceleration air-flow, so that it is rapidly entered the effect of air inlet, since the frequency noise of common range hood is main
It is distributed in 100HZ~2000HZ or so, belongs to low frequency noise, in above-mentioned patent although microwell plate sound absorption structure has good drop
The effect of making an uproar, but it is very strong to the selectivity of sound absorption frequency, only there are good absorption, sound absorption frequency to the noise near resonant frequency
With relatively narrow.
In addition, the Chinese way of cooking is complex changeable, such as frying boiling etc., so common range hood is usually provided with
Multiple gears, such as quick-fried shelves, top gear, low or first gear, mute file etc. are made with being supplied to when user cooks different dish
With.Obviously, when user uses different gears, the air quantity suction generated is different, and the noise generated is also different, and
Generated noise under different stalls can not be absorbed using single micropore noise reduction, noise reduction effect needs to be further increased.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to above-mentioned state of the art, providing can be in blower gear size
Adjust the noise reducing type range hood of noise reduction cavity resonant frequency.
The technical scheme of the invention to solve the technical problem is: the noise reducing type range hood, including blower rack
With the blower being set in blower rack, blower rack front side is equipped with blower cover board, it is characterised in that: is provided on the blower cover board perpendicular
To the noise reduction hole being successively spaced apart, there is front shroud in the installed in front of blower cover board, the rear wall of the front shroud is equipped with perpendicular
To being sequentially distributed and noise reduction cavity group corresponding with noise reduction hole, each noise reduction cavity group include at least two noise reduction cavities, same drop
The volume size of noise reduction cavity in chamber group of making an uproar is along vertically successively unidirectional variation, and the volume of the noise reduction cavity in adjacent noise reduction cavity group
The change direction of size is consistent, and being equipped on the blower cover board can drive front shroud to make vertical motion with respect to blower cover board
Driving mechanism.
In order to improve noise reduction effect, the noise reduction hole lines up in the horizontal direction, and accordingly, the noise reduction cavity group is in water
It square lines up upwards.
In order to further increase noise reduction effect, the noise reduction hole is integrally in distributed rectangular and is set to face air inlet
On position, accordingly, the noise reduction cavity is integrally in distributed rectangular.
As a preferred embodiment, the different noise reduction cavities in the same noise reduction cavity group correspond to the noise reduction of different area size
Hole.In this manner it is achieved that the synchronization noise reduction of more than two frequency bands.
The volume change of noise reduction cavity can be there are many form, it is preferable that all noise reduction cavities in the same noise reduction cavity group
Transverse width and depth remain unchanged, and the vertical width of noise reduction cavity successively changes.
Further preferably, each noise reduction cavity group includes noise reduction cavity described in two, and the body for the noise reduction cavity being located above
Product is greater than the volume of underlying noise reduction cavity.In this way, can be used to cooperate the suction of two gears of only high tap position and low-grade location
Kitchen ventilator, for further including the range hood for having intervening gears, each noise reduction cavity group is needed comprising three noise reduction cavities, and is located at
Between the volume of noise reduction cavity also size is placed in the middle.
Further preferably, the cross section of the noise reduction cavity is square, and the noise reduction hole is circular hole.
Driving mechanism can have a variety of structures, it is preferable that the driving mechanism includes push-rod electric machine, guide holder and guiding
Bar, the push-rod electric machine are mounted on the blower cover board, and the output end of push-rod electric machine acts on the front shroud, the guiding
Seat is mounted on the blower cover board, and guide rod is installed on the guide seat, and institute is mounted at left and right sides of the front shroud
It states on guide rod, front shroud makees vertical motion along guide rod under the driving of the push-rod electric machine.
In order to enable electric pushrod to drive front shroud to move up and down more stablely, it is preferable that the guide rod has four
And four corners of the front shroud are respectively arranged on, four ends angle of the front shroud is movably arranged on corresponding guide rod,
The electric pushrod is set to the top of the front shroud, and offsets at the top of the output end and front shroud of electric pushrod.
As the preferred of any of the above-described scheme, which further includes having exhaust fume collecting hood, the exhaust fume collecting hood installation
In the lower section of blower rack, exhaust fume collecting hood has the air inlet being connected with air inlet.
Compared with the prior art, the advantages of the present invention are as follows: the noise reducing type range hood on blower cover board by being arranged
The vertically noise reduction hole that is successively spaced apart, be arranged on the front shroud on front side of blower cover board be vertically sequentially distributed and with noise reduction hole phase
Corresponding noise reduction cavity group, when front shroud moves up and down under the action of the drive mechanism, noise reduction hole can correspond to the noise reduction cavity of different volumes,
According to Helmholz resonance principle, the wind that the different stalls of the resonant frequency and range hood that can make noise reduction cavity generate is made an uproar frequency
It is identical or match, to realize effective noise reduction.
Detailed description of the invention
Fig. 1 is one structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the structure sectional view of the embodiment of the present invention one；
Fig. 3 is the blower interior structural schematic diagram of the embodiment of the present invention one；
Fig. 4 is the decomposition diagram of the noise reducing mechanism of the embodiment of the present invention one；
Fig. 5 is the structural schematic diagram of the front shroud of the embodiment of the present invention one；
Fig. 6 is the enlarged diagram of part B in Fig. 5；
Fig. 7 is the structural schematic diagram of the noise reducing mechanism of the embodiment of the present invention one；
Fig. 8 is partial structure sectional view of the embodiment of the present invention one in the larger noise reduction cavity of noise reduction hole corresponding volume；
Fig. 9 is partial structure sectional view of the embodiment of the present invention one in the smaller noise reduction cavity of noise reduction hole corresponding volume；
Figure 10 is that the big noise reduction hole of the embodiment of the present invention two corresponds to the partial structural diagram of big noise reduction cavity；
Figure 11 is that the small noise reduction hole of the embodiment of the present invention two corresponds to the partial structural diagram of small noise reduction cavity.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment one:
It as shown in Figures 1 to 7, is preceding to noise reducing type range hood in the present embodiment with direction shown in arrow A in Fig. 2
Including blower rack 1, blower 2 is installed inside blower rack 1, the front side of blower 2 has air inlet 21, the front side of blower rack 1
Blower cover board 3 is installed, exhaust fume collecting hood 6 is installed below blower rack 1, exhaust fume collecting hood 6 have be connected with air inlet 21 into
Air port.
In the present embodiment, the noise reduction hole 31 being vertically successively spaced apart is provided on blower cover board 3, noise reduction hole 31 is circular hole
And size is equal, has front shroud 4 in the installed in front of blower cover board 3, the rear wall of front shroud 4, which is equipped with, to be vertically sequentially distributed
Noise reduction cavity group 41, and the corresponding noise reduction hole 31 of noise reduction cavity group 41.In the present embodiment, a noise reduction cavity group 41 includes
Two noise reduction cavities 411, the cross section of noise reduction cavity 411 are rectangular.The volume for the noise reduction cavity 411 being located above is greater than underlying
The volume of noise reduction cavity 411, specifically, the transverse width and depth of this two noise reduction cavities 411 remain unchanged, and the noise reduction cavity of top
411 vertical width is greater than the vertical width of the noise reduction cavity 411 of lower section.
If the case where including three or three or more noise reduction cavity 411 for a noise reduction cavity group 41, same noise reduction cavity group
The volume size of noise reduction cavity 411 in 41 changes along vertically successively unidirectional, and the noise reduction cavity 411 in adjacent noise reduction cavity group 41
The change direction of volume size is consistent.
In the present embodiment, noise reduction hole 31 lines up in the horizontal direction, and accordingly, noise reduction cavity group 41 is arranged in the horizontal direction
It embarks on journey, in this way, it is in distributed rectangular that noise reduction hole 31 is whole, accordingly, whole noise reduction cavity 411 is in distributed rectangular.Also, noise reduction hole 31
On the whole position for being set to face air inlet 21, better noise reduction effect is obtained with this.
The driving mechanism 5 that front shroud 4 can be driven to make vertical motion with respect to blower cover board 3, tool are installed on blower cover board 3
Body, which includes push-rod electric machine 51, guide holder 52 and guide rod 53, and push-rod electric machine 51 is mounted on blower cover board 3
On, the output end of push-rod electric machine 51 acts on front shroud 4, and guide holder 52 is mounted on blower cover board 3, and guide rod 53, which is mounted on, leads
To on seat 52, the left and right sides of front shroud 4 is mounted on guide rod 53, and front shroud 4 is under the driving of push-rod electric machine 51 along leading
Make vertical motion to bar 53.In order to keep front shroud movement more steady, the guide rod 53 in the present embodiment has four and sets respectively
In four corners of front shroud 4, four ends angle of front shroud 4 is movably arranged on corresponding guide rod 53, and electric pushrod 51 is set
In the top of front shroud 4, and the output end of electric pushrod 51 and the top of front shroud 4 offset.
According to Helmholz resonance principle, the resonant frequency of each independent noise reduction cavity isC is the velocity of sound, and S is
Corresponding noise reduction hole area, V are noise reduction cavity volume, and L is the effective neck length in noise reduction hole.It follows that the situation constant in other parameters
Under, noise reduction cavity volume becomes larger, and resonant frequency f reduces, conversely, noise reduction cavity volume becomes smaller, resonant frequency f becomes larger.Utilize He Muhuo
Hereby resonate noise reduction principle, and the air in air column and noise reduction cavity in noise reduction hole constitutes elastic resonance system, works as range hood
Partial noise frequency it is identical with the intrinsic frequency of this resonance system when, resonance and and hole wall occur for air column in noise reduction hole
Severe friction occurs, friction enables sound to be converted into thermal energy, to achieve the purpose that noise elimination.
As shown in figure 8, air quantity is minimum, and wind speed is minimum when range hood low-grade location is run, corresponding wind makes an uproar frequency also most
It is small, at this point, the biggish noise reduction cavity 411 of 31 corresponding volume of noise reduction hole, makes the resonant frequency of noise reduction cavity 411 and the wind under low-grade location make an uproar
Frequency is identical or matches.
As shown in figure 9, range hood is when high tap position is run, air quantity is maximum, and wind speed is most fast, and corresponding wind makes an uproar frequency also most
Greatly, at this point, making the smaller noise reduction cavity 411 of 31 corresponding volume of noise reduction hole, the resonant frequency of noise reduction cavity 31 and the wind under high tap position is made to make an uproar
Frequency is identical or matches.
Embodiment two:
As shown in Figure 10 and Figure 11, two noise reduction cavities 411 in a noise reduction cavity group 41 of the present embodiment correspond to two not
With the noise reduction hole 31 of size, i.e. a noise reduction cavity group 41 is corresponding with two noise reduction holes 31.By moving up and down front shroud 4,
It can make the biggish biggish noise reduction cavity of noise reduction hole corresponding volume of area, the lesser lesser noise reduction of noise reduction hole corresponding volume of area
Chamber, can also make the biggish lesser noise reduction cavity of noise reduction hole corresponding volume of area, and the lesser noise reduction hole corresponding volume of area is larger
Noise reduction cavity, thus realize two frequency bands synchronization noise reduction.The working principle of the present embodiment is the same as example 1, herein not
Reinflated description.
Claims (10)
1. a kind of noise reducing type range hood, the blower (2) including blower rack (1) and in blower rack, blower rack (1) front side are set
There are blower cover board (3), it is characterised in that: the noise reduction hole (31) being vertically successively spaced apart is provided on the blower cover board (3),
Have front shroud (4) in the installed in front of blower cover board (3), the rear wall of the front shroud (4) be equipped with vertically be sequentially distributed and with
The corresponding noise reduction cavity group (41) in noise reduction hole (31), each noise reduction cavity group (41) includes at least two noise reduction cavities (411), same
The volume size of noise reduction cavity (411) in noise reduction cavity group (41) is along vertically successively unidirectional variation, and adjacent noise reduction cavity group (41)
In noise reduction cavity (411) volume size change direction it is consistent, front cover can be driven by being equipped on the blower cover board (3)
Plate makees the driving mechanism (5) of vertical motion with respect to blower cover board.
2. noise reducing type range hood according to claim 1, it is characterised in that: the noise reduction hole (31) is in the horizontal direction
It lines up, accordingly, the noise reduction cavity group (41) lines up in the horizontal direction.
3. noise reducing type range hood according to claim 2, it is characterised in that: the noise reduction hole (31) is whole in rectangle point
Cloth is simultaneously set on the position of face air inlet (21), and accordingly, the noise reduction cavity (411) is integrally in distributed rectangular.
4. noise reducing type range hood according to claim 1, it is characterised in that: the difference in the same noise reduction cavity group (41)
The noise reduction hole (31) of the corresponding different area size of noise reduction cavity (411).
5. noise reducing type range hood according to claim 1, it is characterised in that: all in the same noise reduction cavity group (41)
The transverse width and depth of noise reduction cavity (411) remain unchanged, and the vertical width of noise reduction cavity (411) successively changes.
6. noise reducing type range hood according to claim 1, it is characterised in that: each noise reduction cavity group (41) includes two
The noise reduction cavity (411), and the volume for the noise reduction cavity (411) being located above is greater than the body of underlying noise reduction cavity (411)
Product.
7. noise reducing type range hood according to claim 1, it is characterised in that: the cross section of the noise reduction cavity (411) is in
Rectangular, the noise reduction hole (31) is circular hole.
8. according to claim 1 to noise reducing type range hood described in any claim in 7, it is characterised in that: the drive
Motivation structure (5) includes push-rod electric machine (51), guide holder (52) and guide rod (53), and the push-rod electric machine (51) is mounted on the wind
On cover plate (3), the output end of push-rod electric machine (51) is acted on the front shroud (4), and the guide holder (52) is mounted on described
On blower cover board (3), guide rod (53) is mounted on the guide holder (52), is mounted at left and right sides of the front shroud (4)
On the guide rod (53), front shroud (4) makees vertical motion along guide rod (53) under the driving of the push-rod electric machine (51).
9. noise reducing type range hood according to claim 8, it is characterised in that: the guide rod (53) has four and divides
Not She Yu the front shroud (4) four corners, four ends angle of the front shroud (4) is movably arranged on corresponding guide rod
(53) on, the electric pushrod (51) is set to the top of the front shroud (4), and the output end and front shroud of electric pushrod (51)
(4) it offsets at the top of.
10. noise reducing type range hood according to claim 1, it is characterised in that: further include having exhaust fume collecting hood (6), the collection
Petticoat pipe (6) is mounted on the lower section of blower rack (1), and exhaust fume collecting hood (6) has the air inlet being connected with air inlet (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810096580.7A CN110094774B (en) | 2018-01-31 | 2018-01-31 | Noise-reducing type range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810096580.7A CN110094774B (en) | 2018-01-31 | 2018-01-31 | Noise-reducing type range hood |
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| Publication Number | Publication Date |
|---|---|
| CN110094774A true CN110094774A (en) | 2019-08-06 |
| CN110094774B CN110094774B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810096580.7A Active CN110094774B (en) | 2018-01-31 | 2018-01-31 | Noise-reducing type range hood |
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| Country | Link |
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| CN (1) | CN110094774B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526267A (en) * | 2020-11-23 | 2022-05-24 | 广东美的白色家电技术创新中心有限公司 | Fan and range hood |
| CN114674022A (en) * | 2022-05-31 | 2022-06-28 | 杭州老板电器股份有限公司 | Fan mechanism for range hood and range hood |
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| US4570748A (en) * | 1983-05-10 | 1986-02-18 | Metzeler Kautschuk Gmbh | Co-oscillating, volume-changing resonator in the form of a silencer |
| CN201858158U (en) * | 2010-11-03 | 2011-06-08 | 上海日立电器有限公司 | Noise-damping hole structure for realizing variable volume of noise-damping cavity through blade with noise-damping slot |
| CN201925993U (en) * | 2011-01-10 | 2011-08-10 | 宁波方太厨具有限公司 | Range hood with current-stabilization noise-reduction structure |
| KR20150118433A (en) * | 2014-04-14 | 2015-10-22 | 박상호 | A reducing noise Apparatus |
| CN106568109A (en) * | 2016-11-11 | 2017-04-19 | 宁波方太厨具有限公司 | Noise reducing impeller and range hood applying impeller |
| CN206755301U (en) * | 2017-05-10 | 2017-12-15 | 佛山市樱顺卫厨用品有限公司 | A kind of noise reduction range hood |
| CN207907315U (en) * | 2018-01-31 | 2018-09-25 | 宁波方太厨具有限公司 | A kind of noise reducing type range hood |
-
2018
- 2018-01-31 CN CN201810096580.7A patent/CN110094774B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4570748A (en) * | 1983-05-10 | 1986-02-18 | Metzeler Kautschuk Gmbh | Co-oscillating, volume-changing resonator in the form of a silencer |
| CN201858158U (en) * | 2010-11-03 | 2011-06-08 | 上海日立电器有限公司 | Noise-damping hole structure for realizing variable volume of noise-damping cavity through blade with noise-damping slot |
| CN201925993U (en) * | 2011-01-10 | 2011-08-10 | 宁波方太厨具有限公司 | Range hood with current-stabilization noise-reduction structure |
| KR20150118433A (en) * | 2014-04-14 | 2015-10-22 | 박상호 | A reducing noise Apparatus |
| CN106568109A (en) * | 2016-11-11 | 2017-04-19 | 宁波方太厨具有限公司 | Noise reducing impeller and range hood applying impeller |
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| CN207907315U (en) * | 2018-01-31 | 2018-09-25 | 宁波方太厨具有限公司 | A kind of noise reducing type range hood |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526267A (en) * | 2020-11-23 | 2022-05-24 | 广东美的白色家电技术创新中心有限公司 | Fan and range hood |
| CN114526267B (en) * | 2020-11-23 | 2024-01-30 | 广东美的白色家电技术创新中心有限公司 | Fan and range hood |
| CN114674022A (en) * | 2022-05-31 | 2022-06-28 | 杭州老板电器股份有限公司 | Fan mechanism for range hood and range hood |
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| Publication number | Publication date |
|---|---|
| CN110094774B (en) | 2024-02-20 |
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