CN110274273A - A kind of noise reducing type range hood - Google Patents
A kind of noise reducing type range hood Download PDFInfo
- Publication number
- CN110274273A CN110274273A CN201810206145.5A CN201810206145A CN110274273A CN 110274273 A CN110274273 A CN 110274273A CN 201810206145 A CN201810206145 A CN 201810206145A CN 110274273 A CN110274273 A CN 110274273A
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- CN
- China
- Prior art keywords
- noise reduction
- orifice plate
- range hood
- front shroud
- noise
- 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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- 230000009467 reduction Effects 0.000 claims abstract description 87
- 230000035939 shock Effects 0.000 claims abstract description 3
- 239000011324 bead Substances 0.000 claims description 31
- 239000007789 gas Substances 0.000 claims description 12
- 239000003517 fume Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 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
- 238000013475 authorization Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (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, denoising device is installed on blower cover board, denoising device includes noise reduction orifice plate, the gentle kickboard of front shroud, noise reduction hole is provided on noise reduction orifice plate, front shroud is set to the front side of noise reduction orifice plate, and noise reduction cavity is formed between noise reduction orifice plate and front shroud, air intake passage is formed between noise reduction orifice plate and air inlet, air bearing plate is set in air intake passage, front shroud is driven to move upwards to reduce the volume of noise reduction cavity under gas shock of the air bearing plate in air intake passage, the denoising device further includes the actuator for making front shroud maintain the trend of moving downward.The noise reducing type range hood air bearing plate can drive front shroud to move upwards with respect to noise reduction orifice plate under airflow function, so that the volume of noise reduction cavity becomes smaller, the frequency Auto-matching so that the wind for generating the resonant frequency of noise reduction cavity and range hood different stalls is made an uproar, it is possible thereby to realize the adaptive stepless frequency conversion noise reduction of range hood.
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
The noise reduction measure of existing range hood cannot accordingly be adjusted according to blower gear change, can not be different according to blower gear
Carry out adaptive step-less adjustment, noise reduction effect not smart enoughization, user experience is poor.In conclusion needing to existing fume-exhausting
The denoising structure of machine is further improved.
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 one kind can be according to blower not
Same gear carrys out the noise reducing type range hood of adaptive step-less adjustment 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, is equipped with denoising device on the blower cover board,
Be characterized in that: the denoising device includes noise reduction orifice plate, the gentle kickboard of front shroud, is provided with noise reduction hole on the noise reduction orifice plate, drop
It makes an uproar and is formed with air intake passage between orifice plate and air inlet, the leading flank of noise reduction orifice plate is equipped be spaced apart up and down first
Parting bead, the front shroud are set on front side of noise reduction orifice plate, and the rear side of front shroud is equipped with the second parting bead being spaced apart up and down, first every
Item and the second parting bead are spaced apart from each other distribution, form noise reduction cavity, each noise reduction cavity pair between adjacent the first parting bead and the second parting bead
There should be the noise reduction hole described at least one, the air bearing plate is set in the air intake passage, air bearing plate energy band under gas shock
Dynamic front shroud is moved upwards with respect to noise reduction orifice plate to reduce the volume of the noise reduction cavity, which further includes making the front cover
Plate maintains the actuator for the trend of moving downward.
Preferably, first parting bead and the second parting bead are horizontally disposed.After first parting bead and the second parting bead are horizontally disposed,
So that noise reduction cavity is also successively horizontally disposed with from top to down.
In order to make each noise reduction cavity that can have preferable noise reduction effect, each noise reduction cavity is corresponding with row's noise reduction hole, and
Row's noise reduction hole is uniformly distributed along horizontal direction interval.
In order to enable the uniform noise reduction of denoising device, the volume of each noise reduction cavity is equal in magnitude.Also, the volume of noise reduction cavity
It can synchronize and become larger or become smaller.
Further preferably, installation window compatible with the noise reduction orifice plate size is provided on the blower cover board, it is described
Noise reduction orifice plate is mounted on the installation window, and the trailing flank of noise reduction orifice plate and the trailing flank of the blower cover board are in same flat
On face.
As the preferred of any of the above-described scheme, the company for connecting air bearing plate is fixed at left and right sides of the front shroud
Fitting, the actuator force on the connector and the front shroud are made to maintain the trend moved downward.
Further preferably, the left and right sides of the air bearing plate is extended with forward connecting column, and the connector is equipped with described in confession
The mounting hole of connecting column insertion is provided with blind hole at the top of connector, and the actuator is gas spring, and the movable end of gas spring is vertical
It is plugged in downwards in the blind hole.In this way, the gentle kickboard of front shroud can be driven to move downward when gas spring works.
Further preferably, the guide groove being vertically distributed, the connecting column limit are equipped in the left and right sides of the noise reduction orifice plate
Position is in the guide groove.In this way, noise reduction orifice plate can be oriented to moving up and down for air bearing plate.
In order to be oriented to moving up and down for front shroud, the bottom of the connector is equipped with the guide post extended downwardly,
The support with guide post guiding cooperation is equipped on the corresponding position on the blower cover board.
Further preferably, which further includes having exhaust fume collecting hood, and the exhaust fume collecting hood is mounted under blower rack
Side, exhaust fume collecting hood have the air inlet being connected with air inlet.
Compared with the prior art, the advantages of the present invention are as follows the noise reduction orifice plate of: the noise reducing type range hood and front shroud it
Between form noise reduction cavity, the air bearing plate being arranged in air intake passage can be driven under airflow function front shroud with respect to noise reduction orifice plate it is upward
Movement, so that the volume of noise reduction cavity becomes smaller, moreover, wind speed is bigger, noise reduction cavity volume becomes smaller, to make the resonance of noise reduction cavity
The wind that frequency and the different stalls of range hood generate is made an uproar frequency Auto-matching, it is possible thereby to realize the adaptive nothing of range hood
Grade frequency conversion noise reduction, noise reduction effect are even more ideal.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the structure sectional view of the embodiment of the present invention；
Fig. 3 is the range hood schematic diagram of internal structure of the embodiment of the present invention；
Fig. 4 is the decomposition diagram of denoising device of embodiment of the present invention mounting structure；
Fig. 5 is the structural schematic diagram of the denoising device of the embodiment of the present invention；
Fig. 6 is the mounting structure schematic diagram of the air bearing plate of the embodiment of the present invention；
Fig. 7 is the enlarged diagram of part A in Fig. 1.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
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 B 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, denoising device 4 is installed on blower cover board 3.Exhaust fume collecting hood 7 is installed, exhaust fume collecting hood 7 has below blower rack 1
There is the air inlet being connected with air inlet 21.
In the present embodiment, denoising device 4 includes the primary clusterings such as noise reduction orifice plate 41, the gentle kickboard 43 of front shroud 42.
Wherein, installation window 31 compatible with 41 size of noise reduction orifice plate is provided on blower cover board 3, noise reduction orifice plate 41 is peace
Fixed plate plate on blower cover board 3, the trailing flank of noise reduction orifice plate 41 and the trailing flank of blower cover board 3 are in same plane
On, air intake passage 6 is formed between noise reduction orifice plate 41 and air inlet 21.The leading flank of noise reduction orifice plate 41 is equipped between the upper and lower
Every the first parting bead 412 of distribution, horizontally disposed and adjacent 412 spacing of the first parting bead of the first parting bead 412 is equal, and adjacent two
Noise reduction hole 411 is provided in bar-shaped zone between first parting bead 412, and noise reduction hole 411 is uniformly distributed along horizontal direction interval.
Front shroud 42 is the movable plate set on the front side of noise reduction orifice plate 41, and the rear side of front shroud 42 is equipped with to be spaced apart up and down
Second parting bead 421, horizontally disposed and adjacent 421 spacing of the second parting bead of the second parting bead 421 are equal.Also, the second parting bead 421 with
First parting bead 412 is spaced apart from each other distribution, noise reduction cavity 5 is formed between adjacent the first parting bead 412 and the second parting bead 421, in this way, often
The volume of a noise reduction cavity 5 is equal in magnitude, also, each noise reduction cavity 5 is corresponding with the equally distributed noise reduction hole in a row of horizontal interval
411。
Air bearing plate 43 is connected on front shroud 42, and air bearing plate 43 is integrally located in air intake passage 6, and air bearing plate 43 is being entered the wind
Under airflow function in channel 6, front shroud 42 can be driven to sync up movement, to reduce the volume of noise reduction cavity 5.
In the present embodiment, the specific connection structure between air bearing plate 43 and front shroud 42 is as follows:
It is fixed with connector 44 in the left and right sides of front shroud 42, the left and right sides of air bearing plate 43 is extended with forward connecting column
431, connector 44 is equipped with the mounting hole 441 being inserted into for connecting column 431.The top of connector 44 is provided with blind hole 442, connector
44 top is equipped with gas spring 45, and the movable end of gas spring 45 is plugged in straight down in blind hole 442, in this way, gas spring 45
It forces in connector 44 and front shroud 42 is made to maintain the trend moved downward.
In addition, in order to be oriented to air bearing plate 43 and moving up and down for front shroud 42, in the left and right of noise reduction orifice plate 41 two
Side is equipped with the guide groove 413 being vertically distributed, and connecting column 431 limits in guide groove 413, and the bottom of connector 44 is equipped with to downward
The guide post 443 stretched is equipped with the support 32 with the guiding cooperation of guide post 443 on the corresponding position on blower cover board 3.
The working principle of the denoising device 4 of the range hood is as follows:
Air bearing plate 43 is in not by the original state of airflow acting force, at this point, the first parting bead 412 and corresponding second parting bead
Spacing between 421 is maximum, and correspondingly, the volume of noise reduction cavity 5 is maximum.When range hood works, air bearing plate 43 is in air intake passage 6
It is moved up under interior airflow function, noise reduction orifice plate 41 syncs up movement, the first parting bead 412 and corresponding with air bearing plate 43
Spacing between two parting beads 421 becomes smaller, so that the volume of noise reduction cavity 5 be made to become smaller.With the rising of air bearing plate 43, gas spring 45
Movable end is shunk, and gas spring 45 generates downward active force to connector 44, so make the gentle kickboard 43 of front shroud 42 have to
The trend of lower movement.
Wind speed is bigger, and the upward active force that air bearing plate 43 is subject to is bigger, and 43 climb of air bearing plate is bigger, to make noise reduction
The volume of chamber 5 is smaller.By Helmholz resonance principle it is found that in the case where other parameters are constant, noise reduction cavity volume becomes larger, altogether
Vibration frequency f reduces, conversely, noise reduction cavity volume becomes smaller, resonant frequency f becomes larger.As it can be seen that the noise reduction cavity of the range hood denoising device
The wind that resonant frequency can be generated with the different stalls of range hood be made an uproar frequency Auto-matching, to realize the adaptive of range hood
Stepless frequency conversion noise reduction.
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), denoising device (4) are installed on the blower cover board (3), it is characterised in that: the denoising device (4)
It including noise reduction orifice plate (41), front shroud (42) gentle kickboard (43), is provided with noise reduction hole (411), drops on the noise reduction orifice plate (41)
It makes an uproar and is formed with air intake passage (6) between orifice plate (41) and air inlet (21), the leading flank of noise reduction orifice plate (41) is equipped with upper
Under the first parting bead (412) for being spaced apart, the front shroud (42) is set on front side of noise reduction orifice plate (41), the rear side of front shroud (42)
Equipped with the second parting bead (421) being spaced apart up and down, the first parting bead (412) and the second parting bead (421) are spaced apart from each other distribution, adjacent
The first parting bead (412) and the second parting bead (421) between form noise reduction cavity (5), each noise reduction cavity (5) is corresponding at least one institute
The noise reduction hole (411) stated, the air bearing plate (43) are set in the air intake passage (6), air bearing plate (43) energy under gas shock
Front shroud (42) are driven to move upwards with respect to noise reduction orifice plate (41) to reduce the volume of the noise reduction cavity (5), the denoising device (4)
It further include the actuator for making the front shroud (42) maintain the trend of moving downward.
2. noise reducing type range hood according to claim 1, it is characterised in that: first parting bead (412) and second every
Item (421) is horizontally disposed.
3. noise reducing type range hood according to claim 2, it is characterised in that: each noise reduction cavity (5) is corresponding with row drop
It makes an uproar hole (411), and row's noise reduction hole (411) is uniformly distributed along horizontal direction interval.
4. noise reducing type range hood according to claim 1, it is characterised in that: the volume size phase of each noise reduction cavity (5)
Deng.
5. noise reducing type range hood according to claim 1, it is characterised in that: be provided on the blower cover board (3) with
The compatible installation window (31) of noise reduction orifice plate (41) size, the noise reduction orifice plate (41) are mounted on the installation window (31)
On, and the trailing flank of noise reduction orifice plate (41) and the trailing flank of the blower cover board (3) are in the same plane.
6. according to claim 1 to noise reducing type range hood described in any claim in 5, it is characterised in that: before described
The connector (44) for connecting air bearing plate (43) is fixed at left and right sides of cover board (42), the actuator forces in the company
The front shroud (42) is set to maintain the trend moved downward on fitting (44).
7. noise reducing type range hood according to claim 6, it is characterised in that: the left and right sides of the air bearing plate (43) to
Before be extended with connecting column (431), the connector (44) be equipped with for the connecting column (431) insertion mounting hole (441), connection
It is provided at the top of part (44) blind hole (442), the actuator is gas spring (45), and the movable end of gas spring (45) is inserted straight down
It is located in the blind hole (442).
8. noise reducing type range hood according to claim 7, it is characterised in that: in the left and right two of the noise reduction orifice plate (41)
Side is equipped with the guide groove (413) being vertically distributed, and connecting column (431) limit is in the guide groove (413).
9. noise reducing type range hood according to claim 6, it is characterised in that: the bottom of the connector (44) be equipped with to
The guide post (443) of lower extension is equipped on the corresponding position on the blower cover board (3) and is oriented to the guide post (443)
The support (32) of cooperation.
10. noise reducing type range hood according to claim 1, it is characterised in that: further include having exhaust fume collecting hood (7), the collection
Petticoat pipe (7) is mounted on the lower section of blower rack (1), and exhaust fume collecting hood (7) has the air inlet being connected with air inlet (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810206145.5A CN110274273B (en) | 2018-03-13 | 2018-03-13 | Noise-reducing type range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810206145.5A CN110274273B (en) | 2018-03-13 | 2018-03-13 | Noise-reducing type range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110274273A true CN110274273A (en) | 2019-09-24 |
| CN110274273B CN110274273B (en) | 2024-02-20 |
Family
ID=67958632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810206145.5A Active CN110274273B (en) | 2018-03-13 | 2018-03-13 | Noise-reducing type range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110274273B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4043796A4 (en) * | 2019-11-11 | 2022-11-09 | Foshan Shunde Midea Washing Appliances Manufacturing Co., Ltd. | Range hood |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130010335A (en) * | 2011-07-18 | 2013-01-28 | 한국철도기술연구원 | Diffraction noise reduction device for noise barrier upper edge using helmholtz resonance absorber |
| WO2016061829A1 (en) * | 2014-10-25 | 2016-04-28 | 佛山市顺德区合捷电器实业有限公司 | Noise-reducing silent range hood and smoke discharging tube |
| CN205388048U (en) * | 2015-12-29 | 2016-07-20 | 天津市普瑞仪器有限公司 | Noise reduction type turbine fan |
| CN106321524A (en) * | 2016-11-18 | 2017-01-11 | 湖南核三力技术工程有限公司 | Damping, muffling and air compensation device for orifice plate |
| CN206330187U (en) * | 2016-12-29 | 2017-07-14 | 宁波方太厨具有限公司 | A kind of single air-inlet range hood |
| CN208170472U (en) * | 2018-03-13 | 2018-11-30 | 宁波方太厨具有限公司 | A kind of noise reducing type range hood |
-
2018
- 2018-03-13 CN CN201810206145.5A patent/CN110274273B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130010335A (en) * | 2011-07-18 | 2013-01-28 | 한국철도기술연구원 | Diffraction noise reduction device for noise barrier upper edge using helmholtz resonance absorber |
| WO2016061829A1 (en) * | 2014-10-25 | 2016-04-28 | 佛山市顺德区合捷电器实业有限公司 | Noise-reducing silent range hood and smoke discharging tube |
| CN205388048U (en) * | 2015-12-29 | 2016-07-20 | 天津市普瑞仪器有限公司 | Noise reduction type turbine fan |
| CN106321524A (en) * | 2016-11-18 | 2017-01-11 | 湖南核三力技术工程有限公司 | Damping, muffling and air compensation device for orifice plate |
| CN206330187U (en) * | 2016-12-29 | 2017-07-14 | 宁波方太厨具有限公司 | A kind of single air-inlet range hood |
| CN208170472U (en) * | 2018-03-13 | 2018-11-30 | 宁波方太厨具有限公司 | A kind of noise reducing type range hood |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4043796A4 (en) * | 2019-11-11 | 2022-11-09 | Foshan Shunde Midea Washing Appliances Manufacturing Co., Ltd. | Range hood |
| US11867406B2 (en) | 2019-11-11 | 2024-01-09 | Foshan Shunde Midea Washing Appliances Manufacturing Co., Ltd. | Range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110274273B (en) | 2024-02-20 |
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