CN106968975A - A kind of low-noise centrifugal fan - Google Patents
A kind of low-noise centrifugal fan Download PDFInfo
- Publication number
- CN106968975A CN106968975A CN201710386929.6A CN201710386929A CN106968975A CN 106968975 A CN106968975 A CN 106968975A CN 201710386929 A CN201710386929 A CN 201710386929A CN 106968975 A CN106968975 A CN 106968975A
- Authority
- CN
- China
- Prior art keywords
- air
- stator
- flow
- centrifugal
- flow guiding
- 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.)
- Pending
Links
- 241000237858 Gastropoda Species 0.000 claims abstract description 12
- 235000019504 cigarettes Nutrition 0.000 claims description 8
- 238000005119 centrifugation Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000003517 fume Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002459 sustained effect Effects 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
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- 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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Low-noise centrifugal fan of the present invention, including be provided with the spiral case and radial device of air inlet and snail tongue exhaust passage in the centrifugal wind wheel in spiral case, be installed on the centrifugal flow guiding circle of air inlet, be characterized in：The stator that polylith stretches out is had additional on the centrifugal flow guiding circle, and the direction of stator guiding air-flow will be approached with the flow direction of primary air inside spiral case.The present invention is during use, both the air draught speed of air inlet can be increased by extra increased stator, improve the air draught ability to air inlet surrounding flow, air-flow can be effectively improved by stator again into the flow uniformity in air channel in spiral case, along with stator guides the direction of air-flow to be approached with the flow direction of primary air inside spiral case, so the disturbance of air intake air-flow can be reduced again, the impact of air-flow and complete machine is reduced to eliminate resonance, effectively lower or abate the noise, improve the usage comfort of consumer.
Description
Technical field
The present invention relates to blower fan field, particularly a kind of low-noise centrifugal fan of suitable smoke exhaust ventilator.
Background technology
With the continuous improvement of living standard, modern likes pursuing quiet comfortable healthy living, will to range hood
Ask and also improve constantly.Both wished that the smoking pollution discharge capability of range hood was strong（Smoking ability represents more by force the performance of the product
Better）, wish that range hood noise is low and energy-conserving and environment-protective again.It is big there is also air quantity on the market at present, the strong range hood of suction,
But the noise of cigarette machine is also relatively bigger than normal, the living standard and quality of people is influenceed, makes healthy be affected.This is mainly
Formed because the baffle liner of existing smoke exhaust ventilator centrifugal blower is a simple ring body, but fan delivery demand is big, and rotating speed is high, enters
Wind direction is single, and intake velocity is big, and air-flow relatively evenly can not enter air channel from baffle liner, be easily caused air-flow and mutually rush
Hit, so as to cause air-flow to produce resonance with complete machine wall, generate the similar abnormal sound sailed, increase the pulsation of sound, influence consumption
The comfortableness of person, so must be improved.
The content of the invention
It is an object of the invention to there is problem and shortage for above-mentioned there is provided a kind of and be effectively improved the uniform of air-flow
Property, the disturbance of air intake air-flow is reduced, reduces the impact of air-flow and complete machine to eliminate resonance, effectively noise-decreasing, and structure
Simple low-noise centrifugal fan.
The technical proposal of the invention is realized in this way：
Low-noise centrifugal fan of the present invention, including the spiral case and radial device of air inlet and snail tongue exhaust passage are provided with snail
Centrifugal wind wheel in shell, the centrifugal flow guiding circle for being installed on air inlet, are characterized in：Polylith is had additional on the centrifugal flow guiding circle
The stator stretched out, and the stator guides the direction of air-flow to be approached with the flow direction of primary air inside spiral case.
The scheme that is preferably provided with of above-mentioned stator is the annular gap arrangement along centrifugal flow guiding circle.Centrifugal flow guiding circle is close to cigarette machine
Stator density of setting at suction inlet is greater than the density of setting of other positions.Because the air intake air-flow at cigarette machine suction inlet
Demeanour is big, and flow is greatly, it is necessary to strong water conservancy diversion effect.Other places are relative to being to lead the reason for wanting at dilute at the suction inlet
Leaf also plays the role of necessarily to hinder air-flow, be difficult it is overstocked, can less as far as possible reduce.
Because snail tongue is that air-flow separates most important place, so further to strengthen its water conservancy diversion effect, above-mentioned centrifugation
Baffle liner need to set a stator near snail tongue exhaust passage.
To maximize optimization air intake fluency, above-mentioned stator depth of section is more shorter close to height toward centrifugal wind wheel center.
To be slightly larger than close to the gap of the luxuriant heart wind wheel blade of air inlet centrifugal flow guiding circle remote away from air inlet baffle liner apart from leaf
The gap of piece.
The present invention on centrifugal flow guiding circle due to using having additional the stator and stator is guided air-flow that polylith stretches out
Direction will be with primary air inside spiral case the close structure in flow direction so that the present invention can both lead to during use
Extra increased stator is crossed to reduce the air-admitting surface of centrifugal blower, so that the air draught speed of air inlet is increased, raising pair
The air draught ability of air inlet surrounding flow, the flowing that can be effectively improved air-flow into air channel in spiral case by stator again is uniform
Property, along with stator guides the direction of air-flow to be approached with the flow direction of primary air inside spiral case, so can reduce into general mood again
The disturbance of stream, reduces the impact of air-flow and complete machine（Reduce impact loss）, so as to eliminate resonance, effectively lower or eliminate and make an uproar
Sound, improves the usage comfort of consumer.Efficiently solving existing centrifugal blower air-flow can not be relatively evenly from baffle liner
Into air channel cause noise it is big, using it is uncomfortable the problems such as.Simple in construction, noise of the invention is low, can be widely used in smoke pumping
On box body, on the type that some new blower fan systems can also be applied to, embody effect to eliminate abnormal sound.
The present invention is further illustrated below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is provided with the structural representation of a stator for a centrifugal flow guiding circle in the present invention.
Fig. 3 is the present invention for the main structure diagram on fume exhaust fan box.
Fig. 4 is Fig. 3 side structure schematic view.
Embodiment
As Figure 1-Figure 4, low-noise centrifugal fan of the present invention, including it is provided with air inlet 11 and snail tongue exhaust passage
12 spiral case 1 and radial device in the centrifugal wind wheel 2 in spiral case 1, be arranged at the centrifugal flow guiding circle 4 of the air inlet 11（Can
Abbreviation baffle liner）, two air inlets of above-mentioned spiral case 1 are respectively equipped with centrifugal flow guiding circle.In order to effectively eliminate abnormal sound, the centrifugation
The stator 5 that polylith stretches out is had additional on baffle liner 4, and the direction of the guiding air-flow of the stator 5 will be with the main gas in the inside of spiral case 1
The flow direction of stream is approached.So, in the use of the present invention, both centrifugation wind can be reduced by these extra increased stators 5
The area of air inlet 11 of machine, so as to increase the air draught speed at air inlet 11, improves the air draught energy to the surrounding flow of air inlet 11
Power, can be effectively improved air-flow into the flow uniformity in air channel in spiral case 1 by stator 5 again.Along with stator 5 guides air-flow
The flow direction of direction and the inside primary air of spiral case 1 approach, so the disturbance of air intake air-flow can be reduced again, reduce air-flow with it is whole
The impact of machine（Reduce impact loss）So as to eliminate resonance, effectively lower or abate the noise, the use for improving consumer is comfortable
Degree.The scheme that is preferably provided with of above-mentioned stator 5 is the annular gap arrangement along centrifugal flow guiding circle 4.Due in use, centrifuging
Air intake air-flow demeanour of the baffle liner 4 at cigarette machine suction inlet 3 is big, and flow is big, it is necessary to strong water conservancy diversion effect, so centrifugation
Stator 5 density of setting of the baffle liner 4 at cigarette machine suction inlet 3 is greater than the density of setting of other positions.Other positions are dilute
Point the reason for be that stator also plays the role of necessarily to hinder air-flow, be difficult it is overstocked, while water conservancy diversion effect is ensured can lack try one's best subtract
It is few.It is further to strengthen its water conservancy diversion effect, above-mentioned centrifugal flow guiding circle 4 exists again because snail tongue is that air-flow separates most important place
The neighbouring position of snail tongue exhaust passage 12 need to be provided with a stator 5.The present invention decision design be：Centrifugal flow guiding circle 4 is close to bottom cigarette machine
Provided with three pieces compared with the stator 5 that solid matter is arranged at suction inlet 3, centrifugal flow guiding circle 4 is provided with one in the neighbouring position of top snail tongue exhaust passage 12
Block stator 5, then it is respectively equipped with the stator 5 of one to two piece of diluter arrangement in the both sides position of centrifugal flow guiding circle 4.And above-mentioned centrifugation
The depth of section of stator 5 on baffle liner 4 is more shorter close to height toward centrifugal wind wheel center, such as makes the diversion edges of stator inwardly
The arcuate structure bent into.If designing if not so, sustained height is made, air-flow just has what is be blocked when entering baffle liner
Effect, is unfavorable for air-flow and smoothly enters baffle liner.Because increasing stator, positive effect is the air-flow drainage to air inlet, instead
Face effect is exactly certain stop minus effect, can reduce intake, therefore rationally to design stator（Also it is deflector）Shape,
Blocking effect is reduced to minimum, to reach that the structure final purpose maximizes optimization air intake fluency.To make close to air inlet
Intake is a little bigger, so that the present invention more fully reduces flow loss, above-mentioned centrifugal wind wheel 2 includes being located at two centrifugal flow guiding circles
Some blades 21 between 4, the gap H1 close to air inlet centrifugal flow guiding circle 4 apart from blade 21 will be slightly larger than away from air inlet
Locate gap H2 of the baffle liner 4 apart from blade 21.That is close to air inlet baffle liner bottom（Inner end）With blade tip
Apart from relatively a little further, to increase intake, and away from air inlet baffle liner bottom（Inner end）With blade tip apart from phase
To more closely, to reduce the leakage that air-flow walks toward outside.Because the intake velocity at air inlet, baffle liner (outside air channel)
Relatively more rapidly;And the intake velocity at remote air inlet, baffle liner (outside air channel) is relatively slowly a bit, therefore need
Wanting reasonable adjusting, once baffle liner bottom, to the distance of vane tip, maximizes optimization air-inlet condition, and prevent gas is past from leaking
Dew.The present invention can be widely used on fume exhaust fan box, on the type that can also apply to some new blower fan systems.The present invention
Especially adapt to single in air intake direction, and be radial direction air intake, compact conformation, in the case that blower fan system resistance is big, effect is more
It is little to axial admission structure function to be obvious.
Although the present invention is to be described with reference to specific embodiments, this description is not meant to constitute limit to the present invention
System.With reference to description of the invention, other changes of the disclosed embodiments are all to be anticipated that for those skilled in the art
, this change should belong in appended claims limited range.
Claims (7)
1. a kind of low-noise centrifugal fan, including it is provided with air inlet（11）With snail tongue exhaust passage（12）Spiral case（1）And radially
It is installed on spiral case（1）Interior centrifugal wind wheel（2）, be arranged at the air inlet（11）Centrifugal flow guiding circle（4）, its feature exists
In：The centrifugal flow guiding circle（4）On have additional the stator that polylith stretches out（5）, and the stator（5）Guide the direction of air-flow
Want and spiral case（1）The flow direction of the inside primary air is approached.
2. low-noise centrifugal fan according to claim 1, it is characterised in that：Above-mentioned stator（5）Along centrifugal flow guiding circle（4）'s
Arrange annular gap.
3. low-noise centrifugal fan according to claim 2, it is characterised in that：Above-mentioned centrifugal flow guiding circle（4）Inhaled close to cigarette machine
Entrance（3）The stator at place（5）Density of setting is greater than the density of setting of other positions.
4. low-noise centrifugal fan according to claim 1 or claim 2, it is characterised in that：Above-mentioned centrifugal flow guiding circle（4）Go out in snail tongue
Air channel（12）Nearby there is a stator（5）.
5. the low-noise centrifugal fan according to claim 1 or 2 or 3, it is characterised in that：Above-mentioned centrifugal flow guiding circle（4）It is close
Bottom cigarette machine suction inlet（3）Place is provided with three pieces compared with the stator that solid matter is arranged（5）, centrifugal flow guiding circle（4）In top snail tongue exhaust passage
（12）Neighbouring position is provided with one piece of stator（5）, then in centrifugal flow guiding circle（4）Both sides position be respectively equipped with one to two piece of diluter row
The stator of row（5）.
6. low-noise centrifugal fan according to claim 1, it is characterised in that：Above-mentioned stator（5）The more past centrifugation of depth of section
Wind wheel（2）Center is shorter close to height.
7. low-noise centrifugal fan according to claim 1, it is characterised in that：Above-mentioned spiral case（1）Two air inlets difference
Provided with centrifugal flow guiding circle（4）, above-mentioned centrifugal wind wheel（2）Including positioned at two centrifugal flow guiding circles（4）Between some blades（21）, lean on
Nearly air inlet centrifugal flow guiding circle（4）Apart from blade（12）Gap（H1）To be slightly larger than away from air inlet baffle liner（4）Away from
From the gap of blade（H2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710386929.6A CN106968975A (en) | 2017-05-26 | 2017-05-26 | A kind of low-noise centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710386929.6A CN106968975A (en) | 2017-05-26 | 2017-05-26 | A kind of low-noise centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106968975A true CN106968975A (en) | 2017-07-21 |
Family
ID=59327365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710386929.6A Pending CN106968975A (en) | 2017-05-26 | 2017-05-26 | A kind of low-noise centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106968975A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224593A (en) * | 2018-03-08 | 2018-06-29 | 苏州贝昂科技有限公司 | A kind of air purifier and ventilating system |
| CN109237579A (en) * | 2018-10-29 | 2019-01-18 | 杭州老板电器股份有限公司 | Low-noise fan and range hood |
| CN109882447A (en) * | 2019-02-27 | 2019-06-14 | 华帝股份有限公司 | Fan and range hood with same |
| CN110439864A (en) * | 2018-05-04 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of air inlet collector and the centrifugal blower with the collector |
| CN110805574A (en) * | 2019-11-12 | 2020-02-18 | 珠海格力电器股份有限公司 | Centrifugal fan volute and air conditioner |
| CN111946670A (en) * | 2020-08-11 | 2020-11-17 | 绍兴华放新材料有限公司 | T-shaped resistance micropore multi-combination exhaust silencer |
| CN114352559A (en) * | 2022-02-16 | 2022-04-15 | 杭州老板电器股份有限公司 | Air inlet ring assembly, centrifugal fan and range hood |
| CN114776638A (en) * | 2022-05-30 | 2022-07-22 | 贵州汇天诚安全设施有限公司 | Low-noise cabinet type centrifugal fan |
| CN115727008A (en) * | 2022-12-02 | 2023-03-03 | 华帝股份有限公司 | Air inlet ring and range hood |
| CN116085315A (en) * | 2023-03-17 | 2023-05-09 | 台州学院 | Take no spiral case centrifugal fan current collector of stator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002371996A (en) * | 2001-06-13 | 2002-12-26 | Sanyo Electric Co Ltd | Blower and ventilator with blower |
| CN200958492Y (en) * | 2006-09-14 | 2007-10-10 | 珠海格力电器股份有限公司 | Volute of centrifugal fan |
| JP2009024595A (en) * | 2007-07-19 | 2009-02-05 | Daikin Ind Ltd | Centrifugal fan and air conditioner using the same |
| CN106015092A (en) * | 2016-07-13 | 2016-10-12 | 重庆沃亚机械有限公司 | High-efficiency energy-saving fan |
| CN207018215U (en) * | 2017-05-26 | 2018-02-16 | 广东顺威精密塑料股份有限公司 | A kind of low-noise centrifugal fan |
-
2017
- 2017-05-26 CN CN201710386929.6A patent/CN106968975A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002371996A (en) * | 2001-06-13 | 2002-12-26 | Sanyo Electric Co Ltd | Blower and ventilator with blower |
| CN200958492Y (en) * | 2006-09-14 | 2007-10-10 | 珠海格力电器股份有限公司 | Volute of centrifugal fan |
| JP2009024595A (en) * | 2007-07-19 | 2009-02-05 | Daikin Ind Ltd | Centrifugal fan and air conditioner using the same |
| CN106015092A (en) * | 2016-07-13 | 2016-10-12 | 重庆沃亚机械有限公司 | High-efficiency energy-saving fan |
| CN207018215U (en) * | 2017-05-26 | 2018-02-16 | 广东顺威精密塑料股份有限公司 | A kind of low-noise centrifugal fan |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224593A (en) * | 2018-03-08 | 2018-06-29 | 苏州贝昂科技有限公司 | A kind of air purifier and ventilating system |
| CN110439864A (en) * | 2018-05-04 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of air inlet collector and the centrifugal blower with the collector |
| CN109237579A (en) * | 2018-10-29 | 2019-01-18 | 杭州老板电器股份有限公司 | Low-noise fan and range hood |
| CN109882447B (en) * | 2019-02-27 | 2024-05-10 | 华帝股份有限公司 | Fan and range hood with same |
| CN109882447A (en) * | 2019-02-27 | 2019-06-14 | 华帝股份有限公司 | Fan and range hood with same |
| CN110805574A (en) * | 2019-11-12 | 2020-02-18 | 珠海格力电器股份有限公司 | Centrifugal fan volute and air conditioner |
| CN111946670A (en) * | 2020-08-11 | 2020-11-17 | 绍兴华放新材料有限公司 | T-shaped resistance micropore multi-combination exhaust silencer |
| CN114352559A (en) * | 2022-02-16 | 2022-04-15 | 杭州老板电器股份有限公司 | Air inlet ring assembly, centrifugal fan and range hood |
| CN114776638A (en) * | 2022-05-30 | 2022-07-22 | 贵州汇天诚安全设施有限公司 | Low-noise cabinet type centrifugal fan |
| CN114776638B (en) * | 2022-05-30 | 2024-06-07 | 贵州汇天诚安全设施有限公司 | Low-noise cabinet type centrifugal fan |
| CN115727008A (en) * | 2022-12-02 | 2023-03-03 | 华帝股份有限公司 | Air inlet ring and range hood |
| CN116085315A (en) * | 2023-03-17 | 2023-05-09 | 台州学院 | Take no spiral case centrifugal fan current collector of stator |
| CN116085315B (en) * | 2023-03-17 | 2023-08-01 | 台州学院 | A volute-less centrifugal fan collector with guide vanes |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170721 |