CN2924364Y - Range hood shell and range hood mounted with same - Google Patents
Range hood shell and range hood mounted with same Download PDFInfo
- Publication number
- CN2924364Y CN2924364Y CN 200620120873 CN200620120873U CN2924364Y CN 2924364 Y CN2924364 Y CN 2924364Y CN 200620120873 CN200620120873 CN 200620120873 CN 200620120873 U CN200620120873 U CN 200620120873U CN 2924364 Y CN2924364 Y CN 2924364Y
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- Prior art keywords
- spiral case
- lampblack absorber
- volute body
- projection
- case according
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Abstract
The utility model discloses a snail casing of an oil-smoke drawing machine and an oil-smoke drawing machine provided with the snail casing. The snail-casing of the oil-smoke drawing machine comprises a snail casing-body, a snail tongue, a vent and an air-absorbing cut. The snail casing appears as a helix disk. The air-absorbing cut is arranged on the side face of the snail casing. The snail tongue is arranged in the beginning position of the helix of the casing. The utility model is characterized in that a protuberance is arranged in the 45 degree range of the helix-beginning section of the snail casing 1. The snail casing of an oil-smoke drawing machine provided by the utility model has a small noise but a strong air-generation capability with a high running efficiency.
Description
Technical field
The utility model relates to a kind of spiral case, particularly relates to a kind of lampblack absorber spiral case.
The utility model also relates to a kind of lampblack absorber that this lampblack absorber spiral case is installed.
Background technology
The lampblack absorber spiral case comprises volute body, snail tongue, air outlet and inlet scoop at present.Volute body is a spiral helicine thick disk body, and volute body is to be that the volute body wrapper sheet and the left side plate of helical curve constitutes by the cross section, and left side plate is installed in volute body wrapper sheet both sides and forms the thick disk body of helical form.The volute body side is provided with the inlet scoop, is provided with impeller in volute body inside with corresponding position, position, inlet scoop, and the snail tongue is to be positioned at volute body spiral original position, and air outlet is the opening that is positioned at place, volute body spiral ultimate position.Like this, when rotating under the effect of impeller at motor, the air in the volute body is got rid of outside the volute body by impeller, and in the inner negative pressure that forms of volute body, oil smoke is got rid of outdoor under the effect of impeller after being inhaled into the inlet scoop under the effect of negative pressure.The weak point of the spiral case of such lampblack absorber is that the noise of gas in spiral case is bigger, and the wind speed profile of air outlet is inhomogeneous, and fan efficiency is low.
In addition, because the noise of spiral case is bigger, thereby the lampblack absorber overall noise that such spiral case is installed is also bigger.
The utility model content
Technical problem to be solved in the utility model is to eliminate above-mentioned the deficiencies in the prior art, and a kind of lampblack absorber spiral case that can effectively reduce noise is provided.
Another technical problem to be solved of the present utility model provides the lower range hood of a kind of noise.
A kind of spiral case that is used for the lampblack absorber blower fan, comprise volute body, snail tongue, air outlet and inlet scoop, described volute body is the helical form disk body, described volute body side is provided with the inlet scoop, described snail tongue is positioned at described volute body spiral original position, it is characterized in that: be provided with projection in 45 ° of scopes of described volute body spiral initial period.
The utility model also has following additional technical characterictic:
Lampblack absorber spiral case of the present utility model, the start angle that can also be described projection is in 5 °～10 ° scopes of helix starting point, and described protruding end of a period angle is in 35 °～40 ° scopes of helix starting point.
Lampblack absorber spiral case of the present utility model, the height a that can also be described projection is 5～12mm.
Lampblack absorber spiral case of the present utility model, also be described projection the cross section be streamlined.
Lampblack absorber spiral case of the present utility model can also be that described convex shape is column or spherical shell shape.
Lampblack absorber spiral case of the present utility model, the cross section that can also be described projection are circular arc or hyperbola or parabola shaped or half elliptic.
Lampblack absorber spiral case of the present utility model can also be that described volute body inside is provided with a slice circular arc guide vane at least, and described guide vane is positioned at described air outlet below.
A kind of lampblack absorber that provides according to another technical problem of the present utility model, comprise frame, power supply, switching device and fan assembly, described fan assembly includes motor, impeller, spiral case and air channel, described impeller is positioned at described spiral case, described spiral case comprises volute body, snail tongue, air outlet and inlet scoop, described volute body is the thick disk body of helical form, described volute body side is provided with the inlet scoop, described snail tongue is positioned at described volute body spiral original position, it is characterized in that: be provided with projection in 45 ° of scopes of described volute body spiral initial period.
Lampblack absorber spiral case of the present utility model has the following advantages with respect to prior art: owing to be provided with projection at the initial period of spiral case, thus reduce the hydrodynamic noise of air-flow in volute body.And the setting of guide vane, wind speed uneven distribution degree descends, makes that mean wind speed improves, thereby improves the exhaust air rate of lampblack absorber, reduces noise.
Lampblack absorber of the present utility model has the advantage that noise is low, mist extractor efficient is high with respect to prior art.
Description of drawings
Fig. 1 the utility model specific embodiment lampblack absorber spiral case front view
Fig. 2 the utility model specific embodiment lampblack absorber spiral case upward view
Another embodiment lampblack absorber spiral case right view of Fig. 3 the utility model
Another embodiment lampblack absorber spiral case front view of Fig. 4 the utility model
Fig. 5 the utility model lampblack absorber spiral case is provided with the schematic diagram of guide vane
The figure number explanation
1----volute body 2----snail tongue 3----inlet scoop
4----air outlet 5----projection 6----guide vane
The 7----oil smoke flows to
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail:
The utility model lampblack absorber spiral case please refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, comprises volute body 1, snail tongue 2, air outlet 4 and inlet scoop 3.Volute body 1 is a spiral helicine thick disk body, and volute body 1 is to be that the volute body wrapper sheet and the left side plate of helical curve constitutes by cross section, and left side plate is installed in volute body 1 wrapper sheet both sides and forms helical form and have the thick disk body of certain thickness helical form.Volute body 1 side is provided with inlet scoop 3, and snail tongue 2 is to be positioned at volute body 1 spiral original position, and air outlet 4 is the openings that are positioned at place, volute body 1 spiral ultimate position.Be provided with a projection 5 in volute body 1 spiral initial period φ angle, the φ angular range is in 45 ° of scopes of spiral initial period.Projection 5 can reduce the mobile noise of air-flow in volute body 1.Oil smoke 3 enters in the volute body 1 and finally discharges outdoorly from the inlet scoop like this, but also can make noise reduce at least 1 decibel.Wherein the air outlet 4 of spiral case turns to 90 ° at place, helix ultimate position among Fig. 1 and Fig. 2, and the spiral case air outlet 4 among Fig. 3 and Fig. 4 does not turn at place, spiral ultimate position, the spiral case that the user can select diverse location air outlet 4 according to the position and the shape in air channel in actual applications, applicability is strong.
Lampblack absorber spiral case of the present utility model please refer to Fig. 1 and Fig. 4, and the position of the projection 5 preferably start angle of projection 5 is in 5 °～10 ° scopes of helix starting point, and the end of a period angle of projection 5 is in 35 °～40 ° scopes of helix starting point.In such position projection 5 is set, determines under the situation that does not improve power of motor through overtesting, the effect that reduces noise is best.Further preferred construction is that projection 5 height is 5～12mm, hole and bubble will occur if projection 5 is excessive, and it is bigger consume energy, if but protruding 5 little, then reduce the DeGrain of noise.Definite through testing, the height of projection 5 is in 5～12mm scope, and is best in the effect of the prerequisite decline low noise that does not have too big power consumption.
Lampblack absorber spiral case of the present utility model, the cross section of projection 5 is streamlineds.Fusiform design makes needs the surperficial contact resistance minimum of the oil smoke of discharge or air and projection 5, reduces power consumption.Projection 5 cross section is an arc, can be circular arc, also can be hyperbola or parabola shaped or half elliptic, please refer to Fig. 1 and Fig. 4, and most preferred mode is a circular arc, and easy to manufacture, easy, the combined and instant of being shaped of mould, cost are low like this.The shape of projection 5 can be a column, also can be global shell.
Lampblack absorber spiral case of the present utility model, please refer to Fig. 1, Fig. 4 and Fig. 5, further can also be that the guide vane 6 of a slice circular arc at least is set in the inside of volute body 1, guide vane 6 be positioned at the below of air outlet 4, and the shape of guide vane 6 is corresponding with the curved shape of volute body 1.Because can changing oil smoke, guide vane 6 flows to 7 or air flow, the mean wind speed of air outlet 4 is brought up to 7.89 meter per seconds from 7.25 meter per seconds, wind speed uneven distribution degree is reduced to 0.06 from 0.075, like this, because even oil smoke is discharged the distribution of air outlet 4 wind speed, reach the effect of certain reduction noise, improved exhaust air rate simultaneously, and then improved the lampblack absorber operating efficiency.Guide vane 6 can be a multi-disc, can also be two, three or multi-disc more, and effect is more obvious like this.Guide vane 6 one ends are for the round end other end is a fine stern, can be to be fine stern apart from air outlet 4 nearest ends, are round end apart from air outlet 4 other end farthest, also can be thin structures in the middle of the circle of the biapiculate structure of middle circle or two.Wherein optimal way is round end for being fine stern apart from air outlet 4 nearest ends apart from air outlet 4 other end farthest, and such advantage is that flowing resistance is little, and the afterbody whirlpool is few, and noise is low.Guide vane 6 arc radius and air outlet 4 consistent size, and corresponding with the tip dimensions of volute body 1.
Range hood of the present utility model comprises frame, power supply, switching device and fan assembly.Fan assembly includes motor, impeller, spiral case and air channel, and impeller is positioned at spiral case, and the axle of impeller and motor is fixed together and rotates with the motor shaft rotation, and fan assembly is installed in the annex framework.Spiral case adopts the spiral case of said structure.Because spiral case simple in structure can effectively reduce noise, make the operating noise of whole lampblack absorber reduce like this.Because the existence of guide vane 6 makes the exhaust air rate of lampblack absorber improve in the volute body 1, and then has improved the operating efficiency of lampblack absorber.
Claims (10)
1. spiral case that is used for the lampblack absorber blower fan, comprise volute body, snail tongue, air outlet and inlet scoop, described volute body is the helical form disk body, described volute body side is provided with the inlet scoop, described snail tongue is positioned at described volute body spiral original position, it is characterized in that: be provided with projection in 45 ° of scopes of described volute body spiral initial period.
2. lampblack absorber spiral case according to claim 1 is characterized in that: the start angle of described projection is in 5 °～10 ° scopes of helix starting point, and described protruding end of a period angle is in 35 °～40 ° scopes of helix starting point.
3. lampblack absorber spiral case according to claim 1 and 2 is characterized in that: the height a of described projection is 5～12mm.
4. lampblack absorber spiral case according to claim 1 and 2 is characterized in that: described projection the cross section be streamlined.
5. lampblack absorber spiral case according to claim 4 is characterized in that: described convex shape is column or spherical shell shape.
6. lampblack absorber spiral case according to claim 4 is characterized in that: the cross section of described projection is an arc.
7. lampblack absorber spiral case according to claim 6 is characterized in that: the cross section of described projection is circular arc or hyperbola or parabola shaped or half elliptic.
8. lampblack absorber spiral case according to claim 1 and 2 is characterized in that: described volute body inside is provided with a slice circular arc guide vane at least, and described guide vane is positioned at described air outlet below.
9. lampblack absorber spiral case according to claim 8 is characterized in that: described guide vane one end is a fine stern for the round end other end, guide vane arc radius and described air outlet consistent size.
10. lampblack absorber, comprise frame, power supply, switching device and fan assembly, described fan assembly includes motor, impeller, spiral case and air channel, and described impeller is positioned at described spiral case, it is characterized in that: described spiral case is the described spiral case of aforementioned any claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620120873 CN2924364Y (en) | 2006-07-05 | 2006-07-05 | Range hood shell and range hood mounted with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620120873 CN2924364Y (en) | 2006-07-05 | 2006-07-05 | Range hood shell and range hood mounted with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2924364Y true CN2924364Y (en) | 2007-07-18 |
Family
ID=38260797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620120873 Expired - Fee Related CN2924364Y (en) | 2006-07-05 | 2006-07-05 | Range hood shell and range hood mounted with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2924364Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457946B (en) * | 2007-12-11 | 2010-11-24 | 宁波方太厨具有限公司 | Bionic micropore noise reduction structure for smoke exhaust system |
| CN105115060A (en) * | 2015-09-29 | 2015-12-02 | 北京卫家环境技术有限公司 | Air purifier |
| CN105107299A (en) * | 2015-09-29 | 2015-12-02 | 北京卫家环境技术有限公司 | Wall-hanging air purifier |
| CN107270354A (en) * | 2017-07-31 | 2017-10-20 | 广东美的厨房电器制造有限公司 | Fan assembly and range hood |
| CN107781882A (en) * | 2017-11-27 | 2018-03-09 | 佛山市云米电器科技有限公司 | A kind of non-planar smoke exhaust ventilator based on Coanda effect |
| CN109441883A (en) * | 2018-11-21 | 2019-03-08 | 浙江板川电器有限公司 | A kind of spiral case |
| WO2022077586A1 (en) * | 2020-10-13 | 2022-04-21 | 宁波方太厨具有限公司 | Flow guide device, centrifugal fan using flow guide device, and range hood |
-
2006
- 2006-07-05 CN CN 200620120873 patent/CN2924364Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457946B (en) * | 2007-12-11 | 2010-11-24 | 宁波方太厨具有限公司 | Bionic micropore noise reduction structure for smoke exhaust system |
| CN105115060A (en) * | 2015-09-29 | 2015-12-02 | 北京卫家环境技术有限公司 | Air purifier |
| CN105107299A (en) * | 2015-09-29 | 2015-12-02 | 北京卫家环境技术有限公司 | Wall-hanging air purifier |
| CN107270354A (en) * | 2017-07-31 | 2017-10-20 | 广东美的厨房电器制造有限公司 | Fan assembly and range hood |
| CN107781882A (en) * | 2017-11-27 | 2018-03-09 | 佛山市云米电器科技有限公司 | A kind of non-planar smoke exhaust ventilator based on Coanda effect |
| CN107781882B (en) * | 2017-11-27 | 2022-12-30 | 佛山市云米电器科技有限公司 | Non-planar smoke ventilator based on kang da effect |
| CN109441883A (en) * | 2018-11-21 | 2019-03-08 | 浙江板川电器有限公司 | A kind of spiral case |
| WO2022077586A1 (en) * | 2020-10-13 | 2022-04-21 | 宁波方太厨具有限公司 | Flow guide device, centrifugal fan using flow guide device, and range hood |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070718 Termination date: 20130705 |