CN110274270A - A kind of noise reducing type range hood - Google Patents
A kind of noise reducing type range hood Download PDFInfo
- Publication number
- CN110274270A CN110274270A CN201810205619.4A CN201810205619A CN110274270A CN 110274270 A CN110274270 A CN 110274270A CN 201810205619 A CN201810205619 A CN 201810205619A CN 110274270 A CN110274270 A CN 110274270A
- Authority
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- China
- Prior art keywords
- noise reduction
- orifice plate
- range hood
- noise
- blower
- Prior art date
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Links
- 230000009467 reduction Effects 0.000 claims abstract description 135
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 21
- 239000003517 fume Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000010411 cooking Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 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
- 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
- 230000008569 process Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (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, denoising device is installed on blower cover board, it is characterized by: denoising device includes noise reduction orifice plate and the cover plate assembly on front side of noise reduction orifice plate, noise reduction hole is provided on noise reduction orifice plate, noise reduction hole region is corresponding with air inlet, noise reduction cavity is formed between noise reduction orifice plate and cover plate assembly, the opposite noise reduction orifice plate of energy is moved forward and backward to adjust the volume size of the noise reduction cavity under the driving of cover plate assembly driving mechanism.Making an uproar for the noise reducing type range hood forms noise reduction cavity between orifice plate and cover plate assembly, it is moved forward and backward under the driving of cover plate assembly driving mechanism with respect to noise reduction orifice plate to adjust the volume size of noise reduction cavity, according to Helmholz resonance principle, the wind that the different stalls of the resonant frequency of noise reduction cavity and range hood can be made to generate frequency of making an uproar is identical or match, also, the stepless noise reduction of range hood may be implemented by the step-less adjustment of noise reduction cavity volume.
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 103697512 B of CN)
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 one kind being capable of step-less adjustment drop
It makes an uproar the noise reducing type range hood of 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 and the cover plate assembly on front side of noise reduction orifice plate, is opened on noise reduction orifice plate
There is noise reduction hole, noise reduction hole region is corresponding with air inlet, and noise reduction cavity, institute are formed between noise reduction orifice plate and cover plate assembly
The opposite noise reduction orifice plate of energy under the driving of cover plate assembly driving mechanism is stated to be moved forward and backward to adjust the volume size of the noise reduction cavity.
Preferably, the front cover component includes fixed border and the removable cover in fixed border, the fixation
Frame is fixed on the leading flank of the noise reduction orifice plate, and the removable cover is under the driving of driving mechanism before opposite noise reduction orifice plate
After move.
As a preferred embodiment, the noise reduction orifice plate includes upper noise reduction bore region and lower noise reduction bore region, described
Fixed border includes upper half frame and lower rim half, and the removable cover includes upper removable cover and lower removable cover, described
Form upper noise reduction cavity between upper noise reduction bore region, upper half frame and upper removable cover, the lower noise reduction bore region, lower rim half and
Lower noise reduction cavity, the upper removable cover and lower the removable cover opposite drop under the driving of driving mechanism are formed between lower removable cover
It makes an uproar before and after orifice plate to independent movement.
Further preferably, the percent opening of the upper noise reduction bore region is identical with the percent opening of lower noise reduction bore region, it is described on
The volume size of noise reduction cavity and lower noise reduction cavity is not identical.In this way, noise reduction can be carried out to the noise of different frequency.
Driving mechanism can have a variety of structures, it is preferable that the driving mechanism includes support base, motor, transmission shaft, first
Axle sleeve, the second axle sleeve, first connecting rod and second connecting rod, the transmission shaft are set on support base, and the motor is mounted on support base
It goes up and transmission shaft is driven to rotate, first axle sleeve and the second axle sleeve are mounted on the transmission shaft and turn with transmission shaft is synchronous
It is dynamic, be connected between the upper removable cover and the first axle sleeve by first connecting rod, the lower removable cover and the second axle sleeve it
Between be connected by second connecting rod, also, the length of the first connecting rod and second connecting rod is unequal or first axle sleeve
It does not overlap with projection of second axle sleeve in the plane perpendicular to transmission shaft.In this way, can be driven when driving mechanism works
Upper removable cover and lower removable cover synchronizing moving, but the distance of movement of same period is unequal, to make noise reduction cavity under
The volume of noise reduction cavity is not identical.
Further preferably, the percent opening of the upper noise reduction bore region and the percent opening of lower noise reduction bore region be not identical.At this point,
The volume of upper noise reduction cavity and lower noise reduction cavity can be identical, can not also be identical, can carry out noise reduction to the noise of different frequency.
As another preferred embodiment, the noise reduction orifice plate only includes the noise reduction bore region an of entirety, accordingly, institute
The fixed border stated is one, and the removable cover is one piece.In this way, only one noise reduction cavity of denoising device, structure is more
Simply.
Preferably, installation window is provided on the blower cover board, the noise reduction orifice plate and blower cover board are in same plane
And it is mounted on the installation window.
Preferably, the blower cover board constitutes the noise reduction orifice plate.In this way, it is only necessary to drop is directly opened on blower cover board
It makes an uproar hole, denoising device structure is more succinct.
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 denoising device of the noise reducing type range hood includes noise reduction
Orifice plate and the cover plate assembly on front side of noise reduction orifice plate, make an uproar and form noise reduction cavity between orifice plate and cover plate assembly, cover plate assembly driving
It is moved forward and backward with respect to noise reduction orifice plate under the driving of mechanism to adjust the volume size of noise reduction cavity, according to Helmholz resonance principle,
The wind that the different stalls of the resonant frequency of noise reduction cavity and range hood can be made to generate frequency of making an uproar is identical or match, also,
The stepless noise reduction of range hood may be implemented by the step-less adjustment of noise reduction cavity volume.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 2 is the structure sectional view of the embodiment of the present invention one；
Fig. 3 is the schematic diagram of internal structure of the embodiment of the present invention one；
Fig. 4 is the mounting structure schematic diagram of the denoising device of the embodiment of the present invention one；
Fig. 5 is the structural schematic diagram of the denoising device of the embodiment of the present invention one；
Fig. 6 is the decomposition diagram of the denoising device mounting structure of the embodiment of the present invention one；
Fig. 7 is the partial structural diagram of the driving mechanism of the embodiment of the present invention one；
Fig. 8 is the structural schematic diagram under the noise reduction cavity volume maximum rating of the embodiment of the present invention one；
Structural schematic diagram when Fig. 9 is the noise reduction cavity volume-diminished of the embodiment of the present invention one；
Figure 10 is the structural schematic diagram under the noise reduction cavity volume minimum state of the embodiment of the present invention one；
Figure 11 is the mounting structure schematic diagram of the denoising device of the embodiment of the present invention two；
Figure 12 is the perspective exploded view of denoising device shown in Figure 11.
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 10, 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, 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 noise reduction orifice plate 41 and the cover plate assembly 42 on front side of noise reduction orifice plate.In wind
Installation window 31 is provided on cover plate 3, noise reduction orifice plate 41 and blower cover board 3 are in same plane and are mounted on installation window 31.Drop
It makes an uproar and is provided with noise reduction hole 411 on orifice plate 41,411 region of noise reduction hole is corresponding with air inlet 21, noise reduction orifice plate 41 and lid
Noise reduction cavity 5 is formed between board group part 42.Front cover component 42 includes fixed border 421 and the removable cover in fixed border
422, fixed border 421 is fixed on the leading flank of noise reduction orifice plate 41, and removable cover 422 is opposite under the driving of driving mechanism 6
Noise reduction orifice plate 41 is moved forward and backward, to adjust the volume size of noise reduction cavity 5.In addition, noise reduction orifice plate 41 is extended with forward guide post
412, the corresponding position of removable cover 422 is equipped with the through-hole 4221 being inserted into for guide post 412.
In the present embodiment, noise reduction orifice plate 41 includes upper noise reduction bore region 41a and lower noise reduction bore region 41b, fixed border 421
Including upper half frame 421a and lower rim half 421b, removable cover 422 includes upper removable cover 422a and lower removable cover 422b,
Upper noise reduction cavity 5a, lower noise reduction bore region are formed between upper noise reduction bore region 41a, upper half frame 421a and upper removable cover 422a
Lower noise reduction cavity 5b, upper removable cover 422a and lower removable cover are formed between 41b, lower rim half 421b and lower removable cover 422b
422b is under the driving of driving mechanism 6 to independent movement before and after noise reduction orifice plate 41.
By the way that upper noise reduction cavity 5a and lower two noise reduction cavities of noise reduction cavity 5b are arranged, the noise of multiple groups different frequency can be reduced.
Also, in the present embodiment, the percent opening of upper noise reduction bore region 41a is identical with the percent opening of lower noise reduction bore region 41b, upper noise reduction cavity
The volume size of 5a and lower noise reduction cavity 5b is not identical in synchronization.
Driving mechanism 6 in the present embodiment includes support base 61, motor 62, transmission shaft 63, the first axle sleeve 64, the second axle sleeve
65, first connecting rod 66 and second connecting rod 67, transmission shaft 63 are set on support base 61, and motor 62 is mounted on support base 61 and drives
Transmission shaft 63 rotates, and the first axle sleeve 64 and the second axle sleeve 65 are mounted on transmission shaft 63 and rotate synchronously with transmission shaft 63, upper work
It is connected between dynamic cover board 422a and the first axle sleeve 64 by first connecting rod 66, between lower removable cover 422b and the second axle sleeve 65
It is connected by second connecting rod 67, also, the length of first connecting rod 66 and second connecting rod 67 is unequal or 64 He of the first axle sleeve
Projection of second axle sleeve 65 on the plane perpendicular to transmission shaft 63 does not overlap.
When work, motor 62 drives transmission shaft 63 to rotate, and the first axle sleeve 64, the second axle sleeve 65 are under the drive of transmission shaft 63
It rotates synchronously, and then first connecting rod 66 and second connecting rod 67 is driven to rotate synchronously, in the length of first connecting rod 66 and second connecting rod 67
Spend the feelings that the projection of unequal or the first axle sleeve 64 and the second axle sleeve 65 in the plane perpendicular to transmission shaft does not overlap
Under condition, the moving distance that upper removable cover 422a and lower removable cover 422b in the same period may be implemented is not identical, so that on
The volume size of noise reduction cavity 5a and lower noise reduction cavity 5b is not identical in synchronization, so as to reduce the noise of different frequency.Such as
Shown in Fig. 2, the depth of upper noise reduction cavity 5a is D1, and the depth of lower noise reduction cavity 5b is that D2 can under the driving of above-mentioned driving mechanism 6
So that D1 ≠ D2.
Using Helmholz resonance noise reduction principle, the air in air column and noise reduction cavity in noise reduction hole constitutes elasticity altogether
Vibrating system, the air when the partial noise frequency of range hood is identical with the intrinsic frequency of this resonance system, in noise reduction hole
Column occurs resonance and severe friction occurs with hole wall, and friction enables sound to be converted into thermal energy, to achieve the purpose that noise elimination.Thus may be used
Know, the resonant frequency of sound absorption peak value can be controlled by changing the volume size of noise reduction cavity.
In order to realize different frequency noise reduction, the percent opening and lower noise reduction bore region of upper noise reduction bore region 41a can also be used
The percent opening of 41b is not identical, and the volume of upper noise reduction cavity 5a and lower noise reduction cavity 5b can be equal, can also be unequal.
In addition, blower cover board 3 itself also may be constructed noise reduction orifice plate, i.e., noise reduction hole is directly set i.e. on blower cover board 3
Can, denoising device structure can be made more succinct.
Embodiment two:
As shown in Figure 9 and Figure 10, the noise reduction orifice plate 41 of the present embodiment only includes the noise reduction bore region of an entirety, corresponding
Ground, fixed border 421 are one, and removable cover 422 is one piece, remaining structure and principle of noise reduction are 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), denoising device (4) is installed on the blower cover board (3), it is characterised in that: the denoising device packet
Noise reduction orifice plate (41) and the cover plate assembly (42) on front side of noise reduction orifice plate are included, noise reduction orifice plate is provided with noise reduction hole on (41)
(411), noise reduction hole (411) region is corresponding with air inlet (21), noise reduction orifice plate (41) and cover plate assembly (42) it
Between form noise reduction cavity (5), under the driving of cover plate assembly (42) driving mechanism (6) can opposite noise reduction orifice plate (41) be moved forward and backward
To adjust the volume size of the noise reduction cavity (5).
2. noise reducing type range hood according to claim 1, it is characterised in that: the front cover component (42) includes fixing
Frame (421) and the removable cover (422) in fixed border, the fixed border (421) are fixed on the noise reduction orifice plate
(41) on leading flank, the removable cover (422) under the driving of driving mechanism opposite noise reduction orifice plate (41) is moved forward and backward.
3. noise reducing type range hood according to claim 2, it is characterised in that: the noise reduction orifice plate (41) includes upper drop
It makes an uproar bore region (41a) and lower noise reduction bore region (41b), the fixed border (421) includes upper half frame (421a) and lower half
Frame (421b), the removable cover (422) include upper removable cover (422a) and lower removable cover (422b), the upper drop
It makes an uproar and forms upper noise reduction cavity (5a), the lower noise reduction between bore region (41a), upper half frame (421a) and upper removable cover (422a)
Lower noise reduction cavity (5b), the upper removable cover are formed between bore region (41b), lower rim half (421b) and lower removable cover (422b)
Plate (422a) and lower removable cover (422b) are under the driving of driving mechanism (6) to independent shifting before and after opposite noise reduction orifice plate (41)
It is dynamic.
4. noise reducing type range hood according to claim 3, it is characterised in that: upper noise reduction bore region (41a's) opens
Porosity is identical with the percent opening of lower noise reduction bore region (41b), the volume size of the upper noise reduction cavity (5a) and lower noise reduction cavity (5b)
It is not identical.
5. noise reducing type range hood according to claim 4, it is characterised in that: the driving mechanism (6) includes support base
(61), motor (62), transmission shaft (63), the first axle sleeve (64), the second axle sleeve (65), first connecting rod (66) and second connecting rod
(67), the transmission shaft (63) is set on support base (61), and the motor (62) is mounted on support base (61) and drives transmission
Axis (63) rotation, first axle sleeve (64) and the second axle sleeve (65) are mounted on the transmission shaft (63) and with transmission shaft (63)
It rotates synchronously, is connected between the upper removable cover (422a) and the first axle sleeve (64) by first connecting rod (66), under described
It is connected between removable cover (422b) and the second axle sleeve (65) by second connecting rod (67), also, the first connecting rod (66)
With the length of second connecting rod (67) is unequal or first axle sleeve (64) and the second axle sleeve (65) are perpendicular to transmission shaft
(63) the projection in plane does not overlap.
6. noise reducing type range hood according to claim 3, it is characterised in that: upper noise reduction bore region (41a's) opens
The percent opening of porosity and lower noise reduction bore region (41b) is not identical.
7. noise reducing type range hood according to claim 2, it is characterised in that: the noise reduction orifice plate (41) only includes one
A whole noise reduction bore region, accordingly, the fixed border (421) are one, and the removable cover (422) is one
Block.
8. noise reducing type range hood according to claim 1, it is characterised in that: be provided with peace on the blower cover board (3)
It fills window (31), the noise reduction orifice plate (41) and blower cover board (3) are in same plane and are mounted on the installation window (31).
9. noise reducing type range hood according to claim 1, it is characterised in that: the blower cover board (3) constitutes described
Noise reduction orifice plate (41).
10. according to claim 1 to noise reducing type range hood described in any claim in 9, it is characterised in that: further include having
Exhaust fume collecting hood (7), the exhaust fume collecting hood (7) are mounted on the lower section of blower rack (1), and exhaust fume collecting hood has to be connected with air inlet (21)
Air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205619.4A CN110274270B (en) | 2018-03-13 | 2018-03-13 | Noise-reducing type range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205619.4A CN110274270B (en) | 2018-03-13 | 2018-03-13 | Noise-reducing type range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110274270A true CN110274270A (en) | 2019-09-24 |
| CN110274270B CN110274270B (en) | 2024-02-20 |
Family
ID=67958159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810205619.4A Active CN110274270B (en) | 2018-03-13 | 2018-03-13 | Noise-reducing type range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110274270B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023218A (en) * | 2020-01-03 | 2020-04-17 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN112484272A (en) * | 2020-11-30 | 2021-03-12 | 珠海格力电器股份有限公司 | Air conditioner control method and device and air conditioning unit |
| CN112524660A (en) * | 2020-11-16 | 2021-03-19 | 宁波方太厨具有限公司 | Noise reduction device, range hood applying noise reduction device and control method of range hood |
| CN114811682A (en) * | 2022-03-30 | 2022-07-29 | 宁波方太厨具有限公司 | A subassembly and range hood of making an uproar falls for range hood |
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| CN204402717U (en) * | 2015-01-12 | 2015-06-17 | 曼胡默尔滤清器（上海）有限公司 | Modular type tuning variable-volume resonant cavity |
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| CN112484272B (en) * | 2020-11-30 | 2022-03-11 | 珠海格力电器股份有限公司 | Air conditioner control method and device and air conditioning unit |
| CN114811682A (en) * | 2022-03-30 | 2022-07-29 | 宁波方太厨具有限公司 | A subassembly and range hood of making an uproar falls for range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110274270B (en) | 2024-02-20 |
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