CN106871204B - Range hood - Google Patents
Range hood Download PDFInfo
- Publication number
- CN106871204B CN106871204B CN201710210959.1A CN201710210959A CN106871204B CN 106871204 B CN106871204 B CN 106871204B CN 201710210959 A CN201710210959 A CN 201710210959A CN 106871204 B CN106871204 B CN 106871204B
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- CN
- China
- Prior art keywords
- range hood
- sound absorber
- micropore
- helmholtz resonance
- coaming plate
- 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.)
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Classifications
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- 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
Abstract
The invention discloses a kind of range hoods, the range hood includes: rack, fan assembly and sound absorber, the rack includes coaming plate and cover board, the coaming plate is connected to limit installation cavity with the cover board, the fan assembly is located in the installation cavity, and the sound absorber is equipped with multiple micropores, and the sound absorber is connected to limit helmholtz resonance chamber with the coaming plate and/or the cover board, wherein, the area of the micropore is 18mm2‑80mm2.Range hood according to an embodiment of the present invention limits helmholtz resonance chamber by the way that sound absorber is arranged, and the area of the micropore on sound absorber is limited to 18mm2‑80mm2, in this way, can reduce the acoustic impedance of air Yu helmholtz resonance chamber, effectively increase the acoustic energy that sound wave enters helmholtz resonance chamber, improve the effect of noise elimination noise reduction.
Description
Technical field
The present invention relates to kitchen utensils fields, are more particularly to a kind of range hood.
Background technique
With the raising that people require quality of the life, the noiseproof feature of range hood, which has become, measures smoke machine globality
One of energy important indicator is that it generates vibration noise and aerodynamic noise as the blower fan system of range hood core drive system
Root, on the one hand the purging efficiency of flue gas can be improved in the exhaust air rate and suction to increase range hood, on the other hand also into
Lead to one step the increase of noise, blower in the related technology often will affect the workability of blower while reducing noise
Can, it can not accomplish between the two take into account well.
Summary of the invention
The application is to be made based on inventor to the discovery of following facts and problem and understanding: generally being recognized in the related technology
To be more conducive to denoising of eliminating the noise so that the micropore in helmholtz resonance cavity configuration is smaller, the micro-pore diameter of general structure of resonant cavity is all
Less than 3mm, however this viewpoint is often with open blower fan system that there are contradictions, when smoke machine operation, due to microcellular structure
Acoustic impedance differs larger with the acoustic impedance of air-flow, and most of noise is reflected by structure of resonant cavity, can not be efficiently entering micro-
Inside hole, lead to that noise elimination purpose cannot be reached.
In this regard, the present invention proposes that a kind of range hood, the range hood have structure is simple, sqouynd absorption lowering noise effect is good etc.
Advantage.
Range hood according to an embodiment of the present invention, including rack, the rack include coaming plate and cover board, the coaming plate and
The cover board is connected to limit installation cavity；Fan assembly, the fan assembly are located in the installation cavity；Sound absorber, institute
Sound absorber is stated equipped with multiple micropores, the sound absorber is connected with the coaming plate and/or the cover board to limit Hai Mu
Hereby resonant cavity suddenly, wherein the area of the micropore is 18mm2-80mm2。
Range hood according to an embodiment of the present invention limits helmholtz resonance chamber by the way that sound absorber is arranged, and
The area of micropore on sound absorber is limited to 18mm2-80mm2, in this way, can reduce air and helmholtz resonance chamber
Acoustic impedance effectively increases the acoustic energy that sound wave enters helmholtz resonance chamber, improves the effect of noise elimination noise reduction.
Range hood according to an embodiment of the invention, in order to not influence the air quantity and wind pressure of range hood entirety, institute
State the interconnecting piece that sound absorber includes acoustic board and is connected with the acoustic board, the acoustic board and the coaming plate and/or described
The spacing of the inner wall of cover board is 6mm-15mm.
Further embodiment according to the present invention, the acoustic board with a thickness of 0.5mm-2mm.
Optionally, the micropore is circular hole, and the diameter of the circular hole is 5mm-10mm.
Further, the spacing between the two neighboring micropore be greater than the micropore diameter, thereby it is ensured that sound wave into
Noise elimination effect after entering helmholtz resonance cavity configuration.
Optionally, the spacing between the two neighboring micropore is 6mm-35mm.
According to one embodiment of present invention, it is spaced apart and arranges in the period between multiple micropores.
Optionally, the micropore is elliptical aperture, delthyrium, square hole or strip hole.
Optionally, sound-absorbing material is equipped in the helmholtz resonance chamber.
According to an embodiment of the present invention, the sound absorber is sheet metal component or integrated molding plastic part.
According to an embodiment of the present invention, the rack further includes air intake plate and air outlet plate, the helmholtz resonance chamber
It is configured to be limited jointly by the sound absorber and the air intake plate or the air outlet plate.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the cross-sectional view of range hood according to an embodiment of the invention；
Fig. 2 is the sound absorber of range hood according to an embodiment of the invention and the assembling schematic diagram of cover board；
Fig. 3 is the exploded view of range hood according to an embodiment of the invention；
Fig. 4 is the cross-sectional view of the range hood of another embodiment according to the present invention；
Fig. 5 is the assembling schematic diagram of the sound absorber of the range hood of another embodiment and coaming plate according to the present invention.
Appended drawing reference:
100: range hood；
10: rack；11: coaming plate；12: cover board；
20: fan assembly；
30: sound absorber；
31: acoustic board；311: micropore；
32: interconnecting piece；
40: air outlet plate.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In range hood system, the most sensitive noise frequency of people is about 800Hz-4500Hz, corresponding in air
Wavelength is about 76mm-425mm, in the related technology, when generally believing using helmholtz resonance chamber progress noise reduction sound-deadening, micropore
Diameter is usually less than 3mm or area is approximately less than 7.5mm2, according to helmholtz resonance principle, after sound transmission comes, with
The close sound wave of helmholtz resonance chamber intrinsic frequency and resonant cavity generate resonance, the air column in vibration processes, in cavity
With cavity inner wall friction and sound energy consumption, so as to achieve the purpose that sqouynd absorption lowering noise.However, due to most range hoods
Middle blower fan system is an open space, when smoke machine operation, when air-flow quickly flows under fan assembly effect, due to micropore
The acoustic impedance of structure differs larger with the acoustic impedance of air-flow, and it is total that most noises can not effectively enter Helmholtz
It shakes in chamber, causes sound wave that can not sufficiently be coupled with helmholtz resonance chamber, to be unable to reach preferable noise elimination noise reduction
Purpose.
For this purpose, the invention proposes a kind of range hood 100, the range hood 100 simple, sqouynd absorption lowering noise with structure
The advantages that effect is good.
Shenfu figure describes range hood 100 according to an embodiment of the present invention below.
As Figure 1-Figure 5, range hood 100 according to an embodiment of the present invention includes rack 10, fan assembly 20 and inhales
Acoustic device 30.
Rack 10 mainly includes coaming plate 11 and cover board 12, and coaming plate 11 and the connection of cover board 12, which are formed, is suitable for installation fan assembly 20
Installation cavity, fan assembly 20 is mounted in installation cavity, and sound absorber 30 is equipped with multiple micropores 311, and sound absorber 30
Helmholtz resonance chamber can be gone out with the coaming plate 11,12 associated retainer of the cover board, or respectively with the coaming plate 11 and lid
Plate 12 is connected to limit multiple helmholtz resonance chambers, wherein the area of micropore 311 is 18mm2-80mm2。
And in the related technology, the area of the micropore 311 of helmholtz resonance chamber is generally set smaller than 7.5mm2Model
It encloses, will lead to most noise sound waves in this way, can not to effectively enter helmholtz resonance intracavitary, so that Helmholtz
Resonant cavity achievees the purpose that effectively to eliminate the noise, and is not obviously improved to 100 overall noise of range hood.
Range hood 100 according to an embodiment of the present invention as a result, passes through the coaming plate 11 or cover board in range hood 100
Sound absorber 30 is set on 12 to form helmholtz resonance cavity configuration, and is 18mm by setting area on sound absorber 302-
80mm2Micropore 311 increase noise in this way, the acoustic impedance between air and helmholtz resonance chamber can be effectively reduced
Sound wave enters the intracavitary acoustic energy of helmholtz resonance, is conducive to sound wave and is coupled with helmholtz resonance chamber, thus
The effect of noise elimination noise reduction is improved to a certain extent.
In an alternate embodiment of the present invention where, as shown in figure 3, sound absorber 30 includes acoustic board 31 and interconnecting piece
32, one end of interconnecting piece 32 is connected with acoustic board 31, and the other end can be sealed with cover board 12 to be connected, in another alternative embodiment
In, the other end of interconnecting piece 32 can be sealed with coaming plate 11 to be connected.It, can also be in coaming plate 11 and cover board 12 in further embodiment
On be respectively set sound absorber 30, and acoustic board 31 is connected with coaming plate 11 and the sealing of cover board 12 respectively by interconnecting piece 32.
It should be noted that glue or weldering can be passed through between the components such as the interconnecting piece 32 and cover board 12 of sound absorber 30, coaming plate 11
It connects in succession, to form helmholtz resonance chamber after guaranteeing connection.
In three above embodiment, the spacing between acoustic board 31 and cover board 12, coaming plate 11 is 6mm-15mm, for example,
Spacing can be 6mm, 9mm or 15mm between acoustic board 31 and cover board 12 or coaming plate 11.In this way, sound absorber 30 and cover board 12,
Coaming plate 11 forms helmholtz resonance chamber between cover board 12 and coaming plate 11, meanwhile, and can guarantee the Helmholtz to be formed
Air layer thickness in resonant cavity is relatively small, so that the occupancy to the flowing space in smoke machine air duct is reduced, it will not be to smoke machine
Air quantity and wind pressure have an impact.
In another alternative embodiment of the invention, rack 10 further includes being located at the air outlet plate 40 of 11 upper end of coaming plate, is inhaled
Sealing is connected between acoustic device 30 and air outlet plate 40, to form helmholtz resonance chamber between, as a result, further
Enhance the noise elimination noise reduction function to noise.Certainly, sound arrester can also be located at other positions such as air inlet position of range hood 100
It sets, equally also can achieve noise reduction effect, in this regard, the present invention does not make restriction.
An example according to the present invention, acoustic board 31 with a thickness of 0.5mm-2mm, thus, it is possible to reduce in air duct
The occupancy of portion's free air space, furthermore, it is also possible to enhance the 800HZ- that helmholtz resonance chamber generates range hood 100
The sqouynd absorption lowering noise effect of noise within the scope of 4500HZ.
According to one embodiment of present invention, micropore 311 can be round hole, and the diameter of circular hole is 5mm-10mm.In this way,
The diameter of circular hole is about 1/5th of noise (noise of people's sensitivity) wave length of sound, is approximately at sub-wavelength magnitude, because
This will not generate large effect to the propagation of sound wave, that is, sound wave is in the case where acoustic impedance is relatively small, Neng Gouyou
Effect enters in helmholtz resonance chamber, to achieve the purpose that noise reduction.
In an optional example of the invention, for the sound absorption effect for guaranteeing helmholtz resonance chamber, adjacent two micro-
Spacing between hole 311 is greater than the diameter of micropore 311, so that into the sound wave in resonant cavity in vibration processes, intracavitary sky
Air column and resonance cavity wall friction and sound energy consumption, reach sqouynd absorption lowering noise purpose.
In further example of the invention, the spacing between two neighboring micropore 311 is 6mm-35mm, for example, micro-
When 311 diameter of hole is 5mm, the spacing between adjacent cells 311 can be with 6mm or 10mm etc., when 311 diameter of micropore is 10mm, phase
Spacing between adjacent micropore 311 is 20mm, 35mm etc., in this way, the diameter of circular hole is the largest of about the five of the noise wavelength of people's sensitivity
/ mono-, 311 spacing maximum of micropore is the half of noise wavelength in people's sensitive range, between Circularhole diameter and micropore 311
Away from sub-wavelength magnitude is approximately at, large effect will not be generated to the propagation of sound wave, that is, sound wave is in acoustic impedance phase
To in lesser situation, significantly more efficient can enter in helmholtz resonance chamber, to achieve the purpose that noise reduction.
According to an alternative embodiment of the invention, sound absorber 30 can be sheet metal component or integrally formed plastics
Part, in this way, the structure of sound absorber 30 is simple, at low cost, and easy to assembly.
It should be noted that be enhancing to the sound absorption effect of 100 noise frequency of range hood, those skilled in the art can be with
According to the actual noise frequency of range hood 100 between the diameter of the micropore 311 of sound absorber 30, adjacent cells 311
Air layer thickness etc. is adjusted in thickness and resonant cavity away from, acoustic board 31, for example, to reduce absorbed noise frequency
Rate can reduce 311 diameter of micropore, can also increase the spacing between adjacent cells 311 or increase helmholtz resonance chamber
The thickness etc. of interior air layer, to further enhance the noise reduction effect to range hood 100.
According to one embodiment of present invention, as shown in Figure 2 and Figure 5, it is spaced and is arranged in the period between multiple micropores 311
Cloth convenient for being manufactured of sound absorber 30, can reduce manufacturing cost while guaranteeing sound absorption effect in this way.
Some alternative embodiments according to the present invention, micropore 311 can be elliptical aperture or delthyrium, square hole
Or strip hole, those skilled in the art can adjust the shape of micropore 311 according to actual design demand to guarantee to range hood
100 noise reduction effect.
It according to still another embodiment of the invention, is the sqouynd absorption lowering noise effect for further enhancing helmholtz resonance chamber,
Helmholtz resonance is intracavitary can be equipped with sound-absorbing material, specifically, can be in the intracavitary setting of helmholtz resonance and its shape phase
The acoustical cotton etc. of adaptation, thus using the sound absorption of sound-absorbing material, further absorbing sound and lowering noise.
Other of range hood 100 according to an embodiment of the present invention are constituted and are operated for those of ordinary skill in the art
For be all it is known, be not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (6)
1. a kind of range hood characterized by comprising
Rack, the rack include coaming plate and cover board, and the coaming plate is connected with the cover board to limit installation cavity；
Fan assembly, the fan assembly are located in the installation cavity；
Sound absorber, the sound absorber are equipped with multiple micropores, the sound absorber and the coaming plate and/or the cover board phase
Even to limit helmholtz resonance chamber, wherein the area of the micropore is 18mm2-80mm2,
Wherein, the micropore is circular hole, and the diameter of the circular hole is 5mm-10mm, and the spacing between the two neighboring micropore is big
Spacing between the diameter and the two neighboring micropore of the micropore is 6mm-35mm, and the sound absorber includes acoustic board
The interconnecting piece being connected with the acoustic board, the spacing of the acoustic board and the coaming plate and/or the inner wall of the cover board are
6mm-15mm。
2. range hood according to claim 1, which is characterized in that the acoustic board with a thickness of 0.5mm-2mm.
3. range hood according to claim 1, which is characterized in that be spaced apart between multiple micropores and arranged in the period
Cloth.
4. range hood according to claim 1, which is characterized in that be equipped with sound absorber in the helmholtz resonance chamber
Material.
5. range hood according to claim 1, which is characterized in that the sound absorber is sheet metal component or integrated molding modeling
Materials and parts.
6. range hood according to any one of claims 1-5, which is characterized in that the rack further includes air outlet plate,
The helmholtz resonance chamber is configured to be limited jointly by the sound absorber and the air outlet plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710210959.1A CN106871204B (en) | 2017-03-31 | 2017-03-31 | Range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710210959.1A CN106871204B (en) | 2017-03-31 | 2017-03-31 | Range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106871204A CN106871204A (en) | 2017-06-20 |
| CN106871204B true CN106871204B (en) | 2019-05-31 |
Family
ID=59159874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710210959.1A Active CN106871204B (en) | 2017-03-31 | 2017-03-31 | Range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106871204B (en) |
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| CN110274272B (en) * | 2018-03-13 | 2024-02-20 | 宁波方太厨具有限公司 | Noise-reducing type range hood |
| CN110274270B (en) * | 2018-03-13 | 2024-02-20 | 宁波方太厨具有限公司 | Noise-reducing type range hood |
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| CN108731074A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with water conservancy diversion noise filtering device |
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| CN108731075B (en) * | 2018-07-14 | 2024-01-09 | 佛山市云米电器科技有限公司 | Range hood with multilayer diversion noise filtering device |
| CN108731068A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with noise filtering device |
| CN108954433A (en) * | 2018-07-14 | 2018-12-07 | 佛山市云米电器科技有限公司 | A kind of through-hole presses the multi-frequency noise filtering kitchen ventilator of arrangement area distribution |
| CN108916939A (en) * | 2018-07-14 | 2018-11-30 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with the cellular noise filtering device by arrangement area distribution |
| CN108916938A (en) * | 2018-07-14 | 2018-11-30 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole |
| CN108731067A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band |
| CN108731066A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator that can reduce specific unifrequency noise |
| CN108731072A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with the cellular noise filtering device of multilayer |
| CN108731080A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator of the three-dimensional noise filtering device of band |
| CN109058175B (en) * | 2018-07-26 | 2020-07-14 | 广东海信家电有限公司 | Noise reduction device |
| CN109162968B (en) * | 2018-08-06 | 2021-01-08 | 广东美的厨房电器制造有限公司 | Silencer and range hood |
| CN111396956A (en) * | 2020-05-07 | 2020-07-10 | 合肥柏隆科技发展有限公司 | Range hood with vibration/noise reduction structure |
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| JP2009127890A (en) * | 2007-11-21 | 2009-06-11 | Fuji Industrial Co Ltd | Range hood |
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| CN105180562A (en) * | 2015-08-21 | 2015-12-23 | 合肥美的电冰箱有限公司 | Refrigerator and wind way plate thereof |
| CN105570201A (en) * | 2016-02-29 | 2016-05-11 | 宁波方太厨具有限公司 | Noise reduction flow collector used for centrifugal fan in range hood |
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|---|---|
| CN106871204A (en) | 2017-06-20 |
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Effective date of registration: 20221219 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 528311 Yongan Road, Beijiao Town, Shunde District, Foshan, Guangdong 6 Patentee before: GUANGDONG MIDEA KITCHEN APPLIANCES MANUFACTURING Co.,Ltd. Patentee before: MIDEA GROUP Co.,Ltd. |