CN207438688U - Kitchen ventilator denoising device and kitchen ventilator - Google Patents
Kitchen ventilator denoising device and kitchen ventilator Download PDFInfo
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- CN207438688U CN207438688U CN201721560461.XU CN201721560461U CN207438688U CN 207438688 U CN207438688 U CN 207438688U CN 201721560461 U CN201721560461 U CN 201721560461U CN 207438688 U CN207438688 U CN 207438688U
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- kitchen ventilator
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Abstract
The utility model is a kind of kitchen ventilator denoising device and kitchen ventilator, is related to cooking fume control equipment technical field, is designed to solve the problems, such as that existing kitchen ventilator noise reduction technology can not effectively reduce the low frequency noise generated in the kitchen ventilator course of work.The kitchen ventilator denoising device includes microphone assembly, loudspeaker assembly and control module.The microphone assembly includes acquisition microphone and examines microphone, and microphone assembly is set close to the noise field of kitchen ventilator；Loudspeaker assembly includes the loud speaker being arranged between the ducting assembly of kitchen ventilator and exhaust fume collecting hood；Control module is to be electrically connected with acquisition microphone, inspection microphone and loud speaker, and control module is arranged on the outside of the ducting assembly.The kitchen ventilator includes ducting assembly, exhaust fume collecting hood and above-mentioned kitchen ventilator denoising device.Kitchen ventilator denoising device and kitchen ventilator provided by the utility model achieve the purpose that purify kitchen environment simultaneously for reducing noise of range hood.
Description
Technical field
The utility model is related to cooking fume control equipment technical field more particularly to a kind of kitchen ventilator denoising devices and oil smoke
Machine.
Background technology
Kitchen ventilator is otherwise known as smoke exhaust ventilator, be it is a kind of for purifying the kitchen appliance of kitchen environment, can be by gas-cooker
The oil smoke generated in exhaust gas and cooking process that burning generates is taken away rapidly, and discharges outdoor, to reach purification kitchen environment
Purpose.
In general, the main reason for kitchen ventilator can generate noise during the work time, which generates is：Motor works, and drives
Movable vane wheel rotates, and air is cut in impeller rotary course so that air impact generates noise in spiral case inner wall.
In the prior art, the technology for reducing kitchen ventilator noise is mostly passive mode, i.e., by using aerodynamic method to air passage
It optimizes either using the motor of low noise again or using sound insulation or sound-absorbing material, these modes are by oil smoke
The body or flue structure of machine are improved, to absorb or obstruct the portion of energy of noise, so as to reach noise reduction purpose.However,
Above-mentioned various noise reduction modes are only capable of reducing the high-frequency noise in noise, little to the inhibition of Middle and low frequency noise, and kitchen ventilator
The main component of noise is exactly low-frequency noise.
Utility model content
First of the utility model is designed to provide a kind of kitchen ventilator denoising device, to solve existing kitchen ventilator noise reduction
Technology can not effectively reduce the technical issues of low frequency noise generated in the kitchen ventilator course of work.
Kitchen ventilator denoising device provided by the utility model, for carrying out noise reduction process to kitchen ventilator, including microphone group
Part, loudspeaker assembly and control module.
The microphone assembly includes gathering the acquisition microphone of noise and the inspection wheat for examining noise reduction
Gram wind, the microphone assembly are set close to the noise field of kitchen ventilator；The microphone assembly is at least one group, wheat described in each group
Acquisition microphone in gram wind component is at least one.
The loudspeaker assembly includes the loud speaker for playing noise-reducing, and the loud speaker is arranged on the air passage of kitchen ventilator
Between component and exhaust fume collecting hood；The loud speaker is at least one.
The control module is to be electrically connected with the acquisition microphone, the inspection microphone and the loud speaker, is used
It is handled in the noise signal to the acquisition microphone acquisition, and output controls the control letter that the loud speaker plays accordingly
Number；The control module is arranged on the outside of the ducting assembly.
Further, the loudspeaker assembly further includes babinet, the babinet be arranged on the spiral case of the ducting assembly with
Between the exhaust fume collecting hood, including cavity, the loud speaker is placed in the cavity.
Further, the loud speaker is two, and the sounding of each loud speaker is downwards.
Further, the control module includes control panel, and the control panel is mounted on the top plate of the ducting assembly.
Further, the microphone assembly is two groups, and microphone assembly described in two groups is separately positioned on the air passage group
At the air inlet position of part.
Further, in microphone assembly described in every group, the acquisition microphone is two.
Further, the microphone assembly further includes stent, and the acquisition microphone and the inspection microphone are solid
If on the bracket, the stent is installed on the kitchen ventilator.
Further, in microphone assembly described in each group, the stent is " L " type, and two acquisition microphones are distinguished
The both ends of the stent are arranged on, the inspection microphone is arranged between two acquisition microphones.
The advantageous effect that the utility model kitchen ventilator denoising device is brought is：
The kitchen ventilator denoising device of noise reduction process is carried out to kitchen ventilator by setting, wherein, kitchen ventilator noise reduction dress
It puts including microphone assembly, loudspeaker assembly and control module, microphone assembly is set close to the noise field of kitchen ventilator, including adopting
Collect microphone and examine microphone, acquisition microphone is used to gather the noise signal in the kitchen ventilator course of work, examines microphone
It tests for the noise reduction to kitchen ventilator denoising device；Loudspeaker assembly includes loud speaker, and loud speaker is arranged on oil smoke
Between the ducting assembly and exhaust fume collecting hood of machine, for playing noise-reducing；Control module is with gathering microphone, inspection microphone and raising one's voice
Device is electrical connection, and the noise signal for being collected to acquisition microphone is handled, and output controlling loudspeaker is broadcast accordingly
The control signal put, also, above-mentioned control module is arranged on the outside of ducting assembly.Wherein, microphone assembly is at least one group,
Acquisition microphone in each group microphone assembly is at least one, and loud speaker is also at least one.
The principle of noise reduction of the kitchen ventilator denoising device is：When the kitchen ventilator denoising device works, acquisition microphone is to oil smoke
Noise in the machine course of work is acquired, and generates noise signal, and above-mentioned noise signal is exported to control module；Control mould
After block carries out calculating processing to noise signal, but opposite in phase identical with the sound amplitude for the noise that acquisition microphone collects is obtained
Noise-reducing signal, to be offset to noise, and simultaneously to loud speaker output noise-reducing control signal；Loud speaker receives
After the control signal of above-mentioned noise-reducing, noise-reducing is played；Microphone is examined to test the offset result of noise, is arrived if examining
There are still then repeat the work step identical with above-mentioned acquisition microphone, continue to offset noise noise signal；If it examines
It disappears to noise signal, kitchen ventilator denoising device power cut-off.
The kitchen ventilator denoising device will be raised one's voice by setting microphone assembly at the position close to noise of range hood field
Device is arranged between ducting assembly and exhaust fume collecting hood, is preferably eliminated the interference of ambient noise, is improved acquisition precision so that wheat
Gram wind component can preferably identify low frequency peak noise, and noise spectrum is truer, and oil is realized using rational layout type
The active noise reduction purpose of smoke machine.Also, it by the way that multiple acquisition microphones is set to be acquired noise signal, further improves
Acquisition precision, meanwhile, the setting of microphone is examined, is also achieved to the real-time inspection of kitchen ventilator denoising device noise reduction with rectifying
Just, so as to substantially increasing the functional reliability of the kitchen ventilator denoising device.
In addition, the outside by the way that control module to be arranged on to ducting assembly, greatly reduces oil smoke pair inside ducting assembly
Pollution caused by control module, ensure that the normal reliable work of control module, and extend the service life of control module, into
One step improves the functional reliability of kitchen ventilator denoising device.In addition, the kitchen ventilator denoising device is simple in structure, scheme is easy to real
It is existing, the low frequency noise generated in the kitchen ventilator course of work can be effectively reduced, alleviates the worry of user significantly, and it is developed
Cycle is short, and cost is relatively low, is of great significance to the noise reduction process in the kitchen ventilator course of work.
Second of the utility model is designed to provide a kind of kitchen ventilator, can not to solve existing kitchen ventilator noise reduction technology
The technical issues of effectively reducing the low frequency noise generated in the kitchen ventilator course of work.
Kitchen ventilator provided by the utility model, including ducting assembly, exhaust fume collecting hood and above-mentioned kitchen ventilator denoising device.
Further, casing is further included, the casing is installed in the top of the exhaust fume collecting hood, the ducting assembly, described
Microphone assembly and the loudspeaker assembly are arranged at the casing internal.
The advantageous effect that the utility model kitchen ventilator is brought is：
By setting ducting assembly, exhaust fume collecting hood and above-mentioned kitchen ventilator denoising device in kitchen ventilator, correspondingly, the kitchen ventilator
Institute with above-mentioned kitchen ventilator denoising device is advantageous, and this is no longer going to repeat them.
In addition, the kitchen ventilator realizes mute work, reduce noise pollution, there is the higher value of environmental protection.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution of the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it describes below
In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is schematic layout pattern of the utility model embodiment kitchen ventilator denoising device in kitchen ventilator；
Fig. 2 is the structure diagram of loudspeaker assembly in the utility model embodiment kitchen ventilator denoising device, wherein, it raises one's voice
Device is not shown；
Fig. 3 is the structure diagram of microphone assembly in the utility model embodiment kitchen ventilator denoising device；
Fig. 4 for the utility model embodiment kitchen ventilator denoising device in off position under opening, kitchen ventilator output
The spectrogram of noise；
Fig. 5 is the main structure diagram of the utility model embodiment kitchen ventilator.
Icon：10- exhaust fume collecting hoods；20- ducting assemblies；30- loudspeaker assemblies；40- microphone assemblies；50- control panels；21-
Air inlet；22- air outlets；31- babinets；311- installation positions；41- stents；42- gathers microphone；43- examines microphone；A- oil
Noise curve when smoke machine denoising device is closed；Noise curve when b- kitchen ventilators denoising device is opened.
Specific embodiment
It is new to this practicality below in conjunction with attached drawing to make the purpose of this utility model, technical solution and advantage clearer
The technical solution of type carries out clear, complete description.Obviously, described embodiment is only the part implementation of the utility model
Example, instead of all the embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making wound
All other embodiments obtained under the premise of the property made work, shall fall within the protection scope of the present invention.
, it is necessary to explanation in the description of the utility model, term " on ", " under ", "left", "right", "front", "rear",
The orientation or position relationship of the instructions such as " top ", " bottom ", " interior ", " outer " are based on orientation shown in the drawings or position relationship, only
It is for only for ease of description the utility model and simplifies description rather than instruction or imply that signified device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.
, it is necessary to illustrate in the description of the utility model, unless otherwise clearly defined and limited, term " installation "
It should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can be direct phase
Even, it can also be indirectly connected by intermediary, can be the connection inside two elements.For the ordinary skill people of this field
For member, concrete meaning of the above-mentioned term in the utility model can be understood with concrete condition.
As shown in Figure 1, a kind of kitchen ventilator denoising device is present embodiments provided, including microphone assembly 40, loud speaker group
Part 30 and control module, microphone assembly 40 are set close to the noise field of kitchen ventilator, including acquisition microphone 42 and examine Mike
Wind 43, acquisition microphone 42 are used to gather the noise signal in the kitchen ventilator course of work, and microphone 43 is examined to be used for kitchen ventilator
The noise reduction of denoising device is tested；Loudspeaker assembly 30 includes loud speaker, and loud speaker is arranged on the air passage group of kitchen ventilator
Between part 20 and exhaust fume collecting hood 10, for playing noise-reducing；Control module and acquisition microphone 42, inspection microphone 43 and loud speaker
It is electrical connection, the noise signal for being collected to acquisition microphone 42 is handled, and output controlling loudspeaker is broadcast accordingly
The control signal put, also, above-mentioned control module is arranged on the outside of ducting assembly 20.Wherein, microphone assembly 40 is at least
One group, the acquisition microphone 42 in each group microphone assembly 40 is at least one, and loud speaker is also at least one.
The principle of noise reduction of the kitchen ventilator denoising device is：When the kitchen ventilator denoising device works, acquisition microphone 42 is to oil
Noise in the smoke machine course of work is acquired, and generates noise signal, and above-mentioned noise signal is exported to control module；Control
After module carries out calculating processing to noise signal, but phase identical with the sound amplitude for the noise that acquisition microphone 42 collects is obtained
Opposite noise-reducing signal, to be offset to noise, and simultaneously to the control signal of loud speaker output noise-reducing；Loud speaker connects
After the control signal for receiving above-mentioned noise-reducing, noise-reducing is played；Microphone 43 is examined to test the offset result of noise, if
Examining noise signal, there are still then repeat the work step identical with above-mentioned acquisition microphone 42, continue to support noise
Disappear；It disappears if examining to noise signal, kitchen ventilator denoising device power cut-off.
The kitchen ventilator denoising device will be raised by setting microphone assembly 40 at the position close to noise of range hood field
Sound device is arranged between ducting assembly 20 and exhaust fume collecting hood 10, is preferably eliminated the interference of ambient noise, is improved acquisition precision,
Microphone assembly 40 is enabled preferably to identify low frequency peak noise, noise spectrum is truer, utilizes rational layout type
Realize the active noise reduction purpose of kitchen ventilator.As seen in Figure 4, after opening the kitchen ventilator denoising device, kitchen ventilator noise reduction
Noise curve a when noise curve b when device is opened is closed significantly lower than kitchen ventilator denoising device, i.e.,：The output of kitchen ventilator
Noise significantly reduces.Also, by the way that multiple acquisition microphones 42 is set to be acquired noise signal, further improve acquisition
Precision, meanwhile, the setting of microphone 43 is examined, is also achieved to the real-time inspection of kitchen ventilator denoising device noise reduction with rectifying
Just, so as to substantially increasing the functional reliability of the kitchen ventilator denoising device.
In addition, the outside by the way that control module to be arranged on to ducting assembly 20, greatly reduces 20 interior oil of ducting assembly
Cigarette is polluted caused by control module, ensure that the normal reliable work of control module, and extends the use longevity of control module
Life further improves the functional reliability of kitchen ventilator denoising device.In addition, the kitchen ventilator denoising device is simple in structure, scheme
It is easily achieved, can effectively reduce the low frequency noise generated in the kitchen ventilator course of work, alleviate the worry of user significantly, and
Its construction cycle is short, and cost is relatively low, is of great significance to the noise reduction process in the kitchen ventilator course of work.
It should be noted that in the present embodiment, " preceding " refers to：Kitchen ventilator in normal operation, close to user
On one side.Correspondingly, " rear ", "left", "right", " on ", " under " are and all directions under " preceding " same viewstate.
It should also be noted that, in the present embodiment, ducting assembly 20 includes spiral case, centrifugal blower, impeller and motor, spiral case
Two sides on be provided with air inlet 21, top is provided with air outlet 22.
Continue referring to Fig. 1, in the present embodiment, loudspeaker assembly 30 can also include babinet 31.Specifically, babinet 31 is set
It puts between the spiral case of ducting assembly 20 and exhaust fume collecting hood 10, and the babinet 31 includes cavity, loud speaker is placed in cavity.
Such setting not only realizes installation of the loud speaker in kitchen ventilator and fixes, moreover, by the way that loud speaker is placed in
In cavity so that sound can resonate in the cavities, air-flow be reduced by the whirlpool that is generated after loud speaker, so as to reduce gas
Flow noise further enhances the noise reduction of the present embodiment kitchen ventilator denoising device.
In the present embodiment, loud speaker can be two, also, the sounding of each loud speaker is downwards.Specifically, such as Fig. 2 institutes
Show, set on the bottom surface of babinet 31 there are two installation position 311, for installing fixed loud speaker, at this point, two loud speakers one are previous
After be arranged in kitchen ventilator (loud speaker is being not shown in figure).
It should be noted that in the present embodiment, loud speaker can be the Number Forms of above-mentioned two, but be not limited solely to
This, can also use other quantity form, such as：One or three etc., as long as the loud speaker by setting fair amount, energy
Enough realize the reliable broadcasting of noise-reducing.
It should also be noted that, in the present embodiment, loud speaker can be the setting form of above-mentioned sounding downwards, but not only
This is limited only to, other setting forms can also be used, such as：To the left, to the right, to first-class, as long as by loud speaker
Sounding face direction is rationally set, and can realize the reliable broadcasting of noise-reducing.
Continue referring to Fig. 1, in the present embodiment, control module can include control panel 50, specifically, the control panel 50 is pacified
On the top plate of ducting assembly 20.
When kitchen ventilator works, oil smoke is entered by air inlet 21, under the action of centrifugal blower, is hit, is hit with spiral case inner wall
Fluid after hitting, which enters in lubricating cup, to be collected, and more clean gas is discharged by air outlet 22.By the way that control panel 50 is arranged on wind
On the top plate of road component 20, the risk that oil smoke is contacted directly with control panel 50 is not only greatly reduced, further ensures control
The cleanliness factor of 50 working environment of plate moreover, such setting, also as save the lateral space of kitchen ventilator so that kitchen ventilator it is whole
Body structure is compacter.
Continue referring to Fig. 1, in the present embodiment, microphone assembly 40 can be two groups, and two groups of microphone assemblies 40 are distinguished
It is arranged at 21 position of air inlet of ducting assembly 20.
By setting two groups of microphone assemblies 40, to be acquired processing to noise signal simultaneously, letter is further ensured
Number acquisition precision.Also, pass through the air inlet 21 that two groups of microphone assemblies 40 are separately positioned on to 20 both sides of ducting assembly
Place is put, greatly reduces the interference of ambient noise so that microphone assembly 40 can preferably identify the low frequency peak in kitchen ventilator
It is worth noise, so that noise spectrum is truer, further ensures the reliable operation of the present embodiment kitchen ventilator denoising device
Property.
As shown in figure 3, in the present embodiment, acquisition microphone 42 can be two.
Fig. 1 is continued referring to, and combines Fig. 3, in the present embodiment, microphone assembly 40 can also include stent 41, wherein,
Acquisition microphone 42 and inspection microphone 43 are installed on stent 41, and stent 41 is installed on kitchen ventilator.Specifically, continuing with
With reference to Fig. 3, in each group microphone assembly 40, stent 41 can be " L " type, and two acquisition microphones 42 are separately positioned on stent
41 both ends examine microphone 43 to be arranged between two acquisition microphones 42.
Acquisition microphone 42 is set respectively by the both ends of the stent 41 in " L " type, is almost realized to noise of range hood
The covering of field so that acquisition microphone 42 can widely collect the noise signal in noise field at different zones position, into
One step ensure that acquisition precision.
It should be noted that in the present embodiment, acquisition microphone 42 can be the setting form of above-mentioned two, but not only
This is confined to, other setting forms can also be used, such as：One or three etc., as long as by setting adopting for fair amount
Collect microphone 42, can realize effective acquisition to noise of range hood.
It should also be noted that, in the present embodiment, stent 41 can be the setting form of above-mentioned " L " type, but not only office
It is limited to this, other shapes form can also be used, such as：Triangle or quadrangle etc., as long as pass through this structure type
Stent 41 can realize acquisition microphone 42 and examine the fixation of microphone 43 on it.
In addition, in the present embodiment, microphone assembly 40 can be above-mentioned is arranged at 20 both sides air inlet 21 of ducting assembly
Setting form, but be not limited solely to this, other setting forms can also be used, such as：It is disposed at before kitchen ventilator
Or below etc., as long as by this set form of microphone assembly 40, it can realize the acquisition to noise of range hood
.
As shown in figure 5, the present embodiment additionally provides a kind of kitchen ventilator, including ducting assembly 20, exhaust fume collecting hood 10 and above-mentioned oil
Smoke machine denoising device.
Correspondingly, the kitchen ventilator has, the institute of above-mentioned kitchen ventilator denoising device is advantageous, and this is no longer going to repeat them.
In addition, the kitchen ventilator realizes mute work, reduce noise pollution, there is the higher value of environmental protection.
Continue referring to Fig. 5, in the present embodiment, which can also include casing.Specifically, casing is installed in collection cigarette
The top of cover 10, ducting assembly 20, microphone assembly 40 and loudspeaker assembly 30 are arranged at casing internal.The setting of casing,
The protective effect to each parts in kitchen ventilator inside is played to a certain extent, extends the working life of kitchen ventilator.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It can still modify to the technical solution recorded in previous embodiment either to which part or all technical characteristic
Carry out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from the utility model embodiment
The scope of technical solution.
Claims (10)
1. a kind of kitchen ventilator denoising device, for carrying out noise reduction process to kitchen ventilator, which is characterized in that including microphone assembly
(40), loudspeaker assembly (30) and control module；
The microphone assembly (40) includes gathering the acquisition microphone (42) of noise and the inspection for examining noise reduction
Microphone (43) is tested, the microphone assembly (40) is set close to the noise field of kitchen ventilator；The microphone assembly (40) is at least
For one group, the acquisition microphone (42) in microphone assembly described in each group (40) is at least one；
The loudspeaker assembly (30) includes playing the loud speaker of noise-reducing, and the loud speaker is arranged on the air passage of kitchen ventilator
Between component (20) and exhaust fume collecting hood (10)；The loud speaker is at least one；
The control module is to be electrically connected with the acquisition microphone (42), the inspection microphone (43) and the loud speaker
It connects, the noise signal for being gathered to the acquisition microphone (42) is handled, and output controls the loud speaker to broadcast accordingly
The control signal put；The control module is arranged on the outside of the ducting assembly (20).
2. kitchen ventilator denoising device according to claim 1, which is characterized in that the loudspeaker assembly (30) further includes case
Body (31), the babinet (31) are arranged between the spiral case of the ducting assembly (20) and the exhaust fume collecting hood (10), including cavity,
The loud speaker is placed in the cavity.
3. kitchen ventilator denoising device according to claim 2, which is characterized in that the loud speaker is two, and each described
The sounding of loud speaker is downwards.
4. kitchen ventilator denoising device according to claim 1, which is characterized in that the control module includes control panel
(50), the control panel (50) is mounted on the top plate of the ducting assembly (20).
5. kitchen ventilator denoising device according to claim 1, which is characterized in that the microphone assembly (40) is two groups,
Microphone assembly (40) described in two groups is separately positioned at air inlet (21) position of the ducting assembly (20).
6. kitchen ventilator denoising device according to claim 1, which is characterized in that in microphone assembly (40) described in every group,
The acquisition microphone (42) is two.
7. kitchen ventilator denoising device according to claim 6, which is characterized in that the microphone assembly (40) further includes branch
Frame (41), the acquisition microphone (42) and the inspection microphone (43) are installed on the stent (41), the stent
(41) it is installed on the kitchen ventilator.
8. kitchen ventilator denoising device according to claim 7, which is characterized in that in microphone assembly described in each group (40),
The stent (41) is " L " type, and two acquisition microphones (42) are separately positioned on the both ends of the stent (41), the inspection
Microphone (43) is tested to be arranged between two acquisition microphones (42).
9. a kind of kitchen ventilator, which is characterized in that including ducting assembly (20), exhaust fume collecting hood (10) and such as any one of claim 1-8
The kitchen ventilator denoising device.
10. kitchen ventilator according to claim 9, which is characterized in that further include casing, the casing is installed in the collection cigarette
The top of (10) is covered, the ducting assembly (20), the microphone assembly (40) and the loudspeaker assembly (30) are arranged at
The casing internal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721560461.XU CN207438688U (en) | 2017-11-21 | 2017-11-21 | Kitchen ventilator denoising device and kitchen ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721560461.XU CN207438688U (en) | 2017-11-21 | 2017-11-21 | Kitchen ventilator denoising device and kitchen ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207438688U true CN207438688U (en) | 2018-06-01 |
Family
ID=62286878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721560461.XU Active CN207438688U (en) | 2017-11-21 | 2017-11-21 | Kitchen ventilator denoising device and kitchen ventilator |
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| Country | Link |
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| CN (1) | CN207438688U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056928A (en) * | 2019-05-24 | 2019-07-26 | 珠海格力电器股份有限公司 | Fume exhaust fan |
| CN112240584A (en) * | 2020-09-27 | 2021-01-19 | 宁波方太厨具有限公司 | Noise reduction method of range hood and range hood |
| CN112240582A (en) * | 2020-09-15 | 2021-01-19 | 宁波方太厨具有限公司 | Fan, range hood and noise reduction method of fan |
-
2017
- 2017-11-21 CN CN201721560461.XU patent/CN207438688U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056928A (en) * | 2019-05-24 | 2019-07-26 | 珠海格力电器股份有限公司 | Fume exhaust fan |
| CN110056928B (en) * | 2019-05-24 | 2024-05-10 | 珠海格力电器股份有限公司 | Fume exhauster |
| CN112240582A (en) * | 2020-09-15 | 2021-01-19 | 宁波方太厨具有限公司 | Fan, range hood and noise reduction method of fan |
| CN112240584A (en) * | 2020-09-27 | 2021-01-19 | 宁波方太厨具有限公司 | Noise reduction method of range hood and range hood |
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