CN105756962B - low-noise oil smoke fan - Google Patents
low-noise oil smoke fan Download PDFInfo
- Publication number
- CN105756962B CN105756962B CN201610178841.0A CN201610178841A CN105756962B CN 105756962 B CN105756962 B CN 105756962B CN 201610178841 A CN201610178841 A CN 201610178841A CN 105756962 B CN105756962 B CN 105756962B
- Authority
- CN
- China
- Prior art keywords
- sound
- fan
- absorbing block
- centrifugal fan
- flabellum
- 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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Links
- 239000000779 smoke Substances 0.000 title abstract 3
- 241000883990 Flabellum Species 0.000 claims description 27
- 239000006233 lamp black Substances 0.000 claims description 13
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 11
- 241000886569 Cyprogenia stegaria Species 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- 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
- F04D29/664—Sound attenuation by means of sound absorbing material
-
- 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
The invention provides a low-noise oil smoke fan which comprises a centrifugal fan with one closed end, wherein the closed end of the centrifugal fan is connected with a driving motor in a shaft mode; the centrifugal fan is surrounded by a fan shell; the fan shell is provided with an axial air inlet facing the inner cavity of the centrifugal fan and a tangential air outlet; a sound absorption block made of sound absorption materials is arranged between every two adjacent fan blades of the centrifugal fan, the sound absorption blocks are arranged together to form a sound absorption block circumferential array positioned on the inner side of the fan blade array of the centrifugal fan, and gaps are reserved among the sound absorption blocks; the caliber of the axial air inlet of the fan shell is smaller than the diameter of the inner side of the sound absorption block circumferential array, so that air flow entering the fan shell from the axial air inlet can reach the tangential air outlet after passing through the sound absorption block circumferential array. This oil smoke fan can effectively prevent and absorb the noise in the tuber pipe at the course of the work to it spreads into indoorly to restrain, thereby forms low noise culinary art environment.
Description
Technical field
The present invention relates to field of electromechanical equipment, particularly, are related to a kind of lampblack fan.
Background technology
The purposes of kitchen ventilator is relatively broad, and especially for Modern Family kitchen, kitchen ventilator belongs to basic kitchen appliance equipment；And
Kitchen ventilator in actual use, will generate larger noise, and larger ingredient comes from the vibration of air hose in this kind of noise；
In current range hood structure, the noise in air hose is made directly through the fan of wind turbine by the incoming interior of oil fume extracting opening
At larger noise pollution.
Invention content
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of low noise lampblack fan, which is working
In the process, the noise in air hose can be effectively prevented and absorb, to inhibit its incoming interior, to form low noise cooking environments.
The technical solution adopted by the present invention to solve the technical problems is：The low noise lampblack fan includes that one end is closed
The blind end axis of centrifugal fan, the centrifugal fan is connected to driving motor；The centrifugal fan periphery is surrounded by blower housing；Institute
Stating blower housing tool, there are one the air inlet through hollow shaft mouths and a tangential air outlet towards the centrifugal fan inner cavity；It is described from
Be respectively equipped between each adjacent flabellum of heart fan one piece by sound absorber texture at sound-absorbing block, each sound-absorbing block Common arrangements
At the sound-absorbing block circumference array on the inside of the flabellum array in centrifugal fan, and there are gaps between each sound-absorbing block；The wind turbine
The bore of the air inlet through hollow shaft mouth of shell is less than the inside diameter of the sound-absorbing block circumference array, makes to enter from the air inlet through hollow shaft mouth
Air-flow inside blower housing gets to the tangential air outlet after must passing through sound-absorbing block circumference array.
Preferably, radial direction of the tangent line of the inner end of the flabellum of the centrifugal fan along centrifugal fan so that from from
The noise flowed through on the outside of heart fan between each adjacent flabellum is flowed into along radial direction in centrifugal fan, with sound-absorbing described in face
Block promotes noise absorption efficiency.
Preferably, the sound-absorbing block is in the shoe towards the flabellum of centrifugal fan；On the one hand it can encase between flabellum
The noise of sound-absorbing block is flowed to, on the other hand, the resistance of the air-flow for flowing to flabellum from centrifugal flabellum inner cavity can be reduced.
Preferably, the sound-absorbing block circumference array has two layers, and the adjacent sound-absorbing block of outer layer sound-absorbing block circumference array
Between gap be right against one piece of sound-absorbing block in internal layer sound-absorbing block circumference array；To make from outer layer sound-absorbing block circumference array
Diffraction comes out sound wave and is further absorbed by internal layer sound-absorbing block circumference array between gap.
Preferably, the flabellum of the centrifugal fan is required towards satisfaction is following：The centrifugal fan in outside air draft, from
Heart fan is in the linear velocity at the tangential air outlet towards air outlet；Since air hose interior air-flow noise is usually that low frequency is made an uproar
Sound, by the preferred embodiment, when thump is transferred to the sound-absorbing block circumference array in centrifugal fan, just near tangential air outlet
The formation of sound-absorbing block circumference array move toward one another, make sound-absorbing block and noise that there is huge relative velocity, to form Doppler
Effect makes noise shift to high frequency by low frequency relative to sound-absorbing block, to significantly improve absorption efficiency of the sound-absorbing block to noise.
The beneficial effects of the present invention are：The low noise lampblack fan in use, is flowed into from air hose outside wind turbine
Noise in shell first passes through each flabellum of centrifugal fan, and since sound wave is not turned to air-flow, no matter centrifugal fan
How are rotating speed and corner state, and the noise flowed out from its each flabellum necessarily impacts on the sound-absorbing block, to by each sound-absorbing block
It is absorbed；Thus the noise of wind turbine is largely reduced.
Description of the drawings
Fig. 1 is the structural schematic diagram of this low noise lampblack fan embodiment one.
Fig. 2 is the structural schematic diagram of this low noise lampblack fan embodiment two.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples：
Embodiment one：
In embodiment one shown in Fig. 1, which includes the closed centrifugal fan 1 in one end, it is described from
The blind end axis of heart fan 1 is connected to driving motor（It is not shown in figure rear）；1 periphery of the centrifugal fan is surrounded by wind turbine
Shell 2；There are one tangentially go out the tool of the blower housing 2 towards the air inlet through hollow shaft mouth 20 of the centrifugal fan inner cavity and one
Air port 21；Be respectively equipped between each adjacent flabellum 11 of the centrifugal fan 1 one piece by sound absorber texture at sound-absorbing block 3, respectively
3 Common arrangements of sound-absorbing block at the sound-absorbing block circumference array on the inside of the flabellum array in centrifugal fan, and each sound-absorbing block 3 it
Between there are gaps；The bore of the air inlet through hollow shaft mouth 20 of the blower housing 2 is less than the inside diameter of the sound-absorbing block circumference array,
Make to get to after must passing through sound-absorbing block circumference array from the air-flow that the air inlet through hollow shaft mouth 20 enters inside blower housing 2 described
Tangential air outlet 21.It should be pointed out that in order to avoid friction, the side certainty of centrifugal fan 1 and blower housing 2 there are
Gap, it is minimum for the whole flow direction influence of air-flow and noise so since gap is smaller, it can be neglected.
Above-mentioned low noise lampblack fan, the tangent line of the inner end of the flabellum 11 of the centrifugal fan 1 is along the half of centrifugal fan 1
Diameter direction, so that flow through the noise between each adjacent flabellum from 1 outside of centrifugal fan flows into centrifugal fan 1 along radial direction
It is interior, with sound-absorbing block 3 described in face, promote noise absorption efficiency.
In addition, the flabellum 11 of the centrifugal fan 1 is required towards satisfaction is following：The centrifugal fan 1 in outside air draft, from
Heart fan 1 is in the linear velocity at the tangential air outlet 21 towards air outlet, in embodiment illustrated in fig. 1 one, i.e. centrifugal fan 1
When air draft, turn to as shown in curve arrow in Fig. 1；Since air hose interior air-flow noise is usually low frequency noise, by the preferred embodiment,
When thump is transferred to the sound-absorbing block circumference array in centrifugal fan 1, just with the sound-absorbing block circumference near tangential air outlet 21
Array formation moves toward one another, and sound-absorbing block 3 is made with noise to there is huge relative velocity to make noise to form Doppler effect
High frequency is shifted to by low frequency relative to sound-absorbing block, to significantly improve absorption efficiency of the sound-absorbing block 3 to noise.
Above-mentioned low noise lampblack fan in use, is first passed through from the noise flowed into blower housing 2 in air hose
Each flabellum 11 of centrifugal fan 1, and since sound wave is not turned to air-flow, no matter the rotating speed and corner state of centrifugal fan 1
How, the noise flowed out from its each flabellum 11 necessarily impacts on the sound-absorbing block 3, to be absorbed by each sound-absorbing block 3；Thus
Largely reduce the noise of wind turbine.
Embodiment two：
For embodiment two shown in Fig. 2, with embodiment one the difference is that：The sound-absorbing block 3 be in towards from
The shoe of the flabellum 11 of heart fan 1；On the one hand it can encase from the noise for flowing to sound-absorbing block 3 between flabellum 11, it on the other hand, can be with
Reduce for the resistance for the air-flow for flowing to flabellum 11 from centrifugal fan inner cavity.The sound-absorbing block circumference array has two layers, and outer
Gap between the adjacent sound-absorbing block 3 of layer sound-absorbing block circumference array is right against one piece of sound-absorbing in internal layer sound-absorbing block circumference array
Block；To make to come out sound wave further by internal layer sound-absorbing block circumference array institute from diffraction between the gap of outer layer sound-absorbing block circumference array
It absorbs.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, made by any modification, equivalent replacement, should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of low noise lampblack fan, including the closed centrifugal fan in one end（1）, the centrifugal fan（1）Blind end axis
It is connected to driving motor；The centrifugal fan（1）Periphery is surrounded by blower housing（2）；It is characterized in that：The blower housing（2）
There are one tools towards the centrifugal fan（1）The air inlet through hollow shaft mouth of inner cavity（20）An and tangential air outlet（21）；It is described from
Heart fan（1）Each adjacent flabellum（11）Between be respectively equipped with one piece by sound absorber texture at sound-absorbing block（3）, each sound-absorbing
Block（3）Common arrangements are in centrifugal fan（1）Flabellum array on the inside of sound-absorbing block circumference array, and each sound-absorbing block（3）It
Between there are gaps；The blower housing（2）Air inlet through hollow shaft mouth（20）Bore be less than the sound-absorbing block circumference array inside
Diameter makes from the air inlet through hollow shaft mouth（20）Into blower housing（2）Internal air-flow must pass through ability after sound-absorbing block circumference array
The tangential air outlet can be reached（21）；The sound-absorbing block circumference array has two layers, and the phase of outer layer sound-absorbing block circumference array
Gap between adjacent sound-absorbing block is right against one piece of sound-absorbing block in internal layer sound-absorbing block circumference array；So that from outer layer sound-absorbing block circumference
Diffraction comes out sound wave and is further absorbed by internal layer sound-absorbing block circumference array between the gap of array.
2. low noise lampblack fan according to claim 1, it is characterised in that：The centrifugal fan（1）Flabellum（11）
Inner end tangent line along centrifugal fan（1）Radial direction so that from centrifugal fan（1）Outside flows through each adjacent flabellum（11）It
Between noise along radial direction flow into centrifugal fan（1）It is interior, with sound-absorbing block described in face（3）.
3. low noise lampblack fan according to claim 1, it is characterised in that：The sound-absorbing block（3）Wind is centrifuged in direction
The flabellum of fan（11）Shoe.
4. low noise lampblack fan as claimed in any of claims 1 to 3, it is characterised in that：The centrifugal fan
（1）Flabellum（11）It is required as follows towards meeting：The centrifugal fan（1）In outside air draft, centrifugal fan（1）It is cut in described
To air outlet（21）The linear velocity at place is towards air outlet（21）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610178841.0A CN105756962B (en) | 2016-03-28 | 2016-03-28 | low-noise oil smoke fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610178841.0A CN105756962B (en) | 2016-03-28 | 2016-03-28 | low-noise oil smoke fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105756962A CN105756962A (en) | 2016-07-13 |
| CN105756962B true CN105756962B (en) | 2018-09-28 |
Family
ID=56346472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610178841.0A Active CN105756962B (en) | 2016-03-28 | 2016-03-28 | low-noise oil smoke fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105756962B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954439A (en) * | 2018-07-14 | 2018-12-07 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with spiral camber noise filtering device |
| CN108954437A (en) * | 2018-07-14 | 2018-12-07 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with multi-layer helical curved surface noise filtering device |
| CN112629001A (en) * | 2020-12-11 | 2021-04-09 | 安徽美博智能科技有限公司 | Active noise reduction device and active noise reduction system of air conditioner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3346174A (en) * | 1966-07-05 | 1967-10-10 | Trane Co | Compact axial flow fan |
| CN103216469A (en) * | 2013-04-15 | 2013-07-24 | 西安交通大学 | Photonic crystal structure low and medium frequency rectification and noise reduction device for centrifugal fan |
| CN104912821B (en) * | 2015-06-16 | 2018-02-23 | 常州协发机械制造有限公司 | A kind of shock wave compression machine |
-
2016
- 2016-03-28 CN CN201610178841.0A patent/CN105756962B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105756962A (en) | 2016-07-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180814 Address after: 528400 East floor of Building 2, Guangdong science and Technology Park, Tsui hang New District and 16 Ching Road, Zhongshan, China Applicant after: Guangdong Meiji Intelligent Technology Co., Ltd. Address before: 215000 Nan Yang village residents' committee, Ping Wang Town, Wujiang District, Suzhou, Jiangsu Applicant before: Qian Yuezhen |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |