CN201535267U - Fan structure of range hood - Google Patents
Fan structure of range hood Download PDFInfo
- Publication number
- CN201535267U CN201535267U CN2009202367683U CN200920236768U CN201535267U CN 201535267 U CN201535267 U CN 201535267U CN 2009202367683 U CN2009202367683 U CN 2009202367683U CN 200920236768 U CN200920236768 U CN 200920236768U CN 201535267 U CN201535267 U CN 201535267U
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- China
- Prior art keywords
- impeller
- plate
- spiral case
- diffusion plate
- volute
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- 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.)
- Expired - Lifetime
Links
- 238000009792 diffusion process Methods 0.000 claims description 46
- 239000003517 fume Substances 0.000 claims description 12
- 238000000926 separation method Methods 0.000 abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003546 flue gas Substances 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
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Abstract
The utility model relates to a range hood fan structure. The centrifugal impeller comprises a volute and a centrifugal impeller arranged in the volute, wherein the volute comprises a volute enclosing plate, a volute front plate and a volute rear plate, the volute front plate and the volute rear plate are connected to the front end face and the rear end face of the volute enclosing plate respectively, the centrifugal impeller comprises an impeller front disc, an impeller rear disc and blades, the impeller front disc and the impeller rear disc are connected to the front end and the rear end of the blades respectively, the centrifugal impeller is arranged in a cavity enclosed by the volute enclosing plate, the volute front plate and the volute rear plate, a front pressure expanding plate is arranged on the impeller front disc, a rear pressure expanding plate is arranged on the impeller rear disc, the front pressure expanding plate and the rear pressure expanding plate extend outwards along the radial direction from the two end portions of the blades respectively, and a horn-shaped expansion channel is formed. The utility model discloses can make the flue gas speed of impeller export reduce, owing to enlarge the separation loss that arouses suddenly and the swirl loss in the spiral case when having reduced the flue gas entering spiral case, improve the amount of wind, the wind pressure of fan to effectively reduce pneumatic noise.
Description
Technical field
The utility model is a kind of cooking-fume exhauster blower structure, belongs to the renovation technique of used for range hood blower fan.
Background technique
Along with the raising of social progress and people's daily life level, range hood is used increasingly extensive, spreads to huge numbers of families.Blower fan is the heart and the motive force of range hood, and impeller is the core component of blower fan, and the quality of its performance directly influences the aeroperformance and the noise of range hood.Blower fan in the running, the absolute velocity of the air-flow at impeller outlet place is higher, sudden enlargement when flowing into spiral case produces jet one tail phenomenon, causes bigger diffusion loss, influences air quantity, blast, and produces strong eddy current crack; Near the impeller outlet separation of flow district periodically impacts peripheral gas simultaneously, produces very big rotational noise.Therefore the jet that produces at impeller outlet of air-flow and the tail phenomenon air quantity, the blast that not only influence range hood, but also be the main aerodynamic noise source of cooking-fume exhauster blower.
The model utility content
The purpose of this utility model is to consider the problems referred to above and provides a kind of and can enter spiral case more swimmingly by steering flow, reduce the generation of flow separation and vortex, alleviate the jet-tail phenomenon of blade exit, thereby can improve air quantity, the cooking-fume exhauster blower structure of blast and reduction aerodynamic noise.
The technical solution of the utility model is: the centrifugal blower of used for range hood of the present utility model, include spiral case and place the interior centrifugal impeller of spiral case, wherein spiral case includes the spiral case coaming plate, plate behind spiral case header board and the spiral case, wherein plate is connected to the front-end face and the ear end face of spiral case coaming plate behind spiral case header board and the spiral case, centrifugal impeller includes the impeller shroud, impeller hub disk and blade, impeller shroud and impeller hub disk are connected to the front end and the rear end of blade, centrifugal impeller places by the spiral case coaming plate, in the cavity that plate surrounds behind spiral case header board and the spiral case, diffusion plate before wherein the impeller shroud is provided with, the impeller hub disk is provided with back diffusion plate, preceding diffusion plate begins radially to extend outward from the two end part of blade respectively with back diffusion plate, forms flaring expanding channel.
Above-mentioned impeller is D1 at the diameter at the place, two end part of blade, and the external diameter of forward and backward diffusion plate is D2,
Choosing of above-mentioned D2 must guarantee that preceding diffusion plate and back diffusion plate and spiral case coaming plate are not less than 5mm along impeller minimum range H1 radially, before diffusion plate and spiral case header board along impeller shaft to minimum range H2 be not less than 3mm, behind back diffusion plate and the spiral case plate along impeller shaft to minimum range H3 be not less than 3mm.
Before above-mentioned diffusion plate and impeller shaft to angle be that φ 1,95 degree≤φ 1≤150 spends.
Above-mentioned back diffusion plate and impeller shaft to angle be that φ 2,95 degree≤φ 2≤150 spend.
The shape of diffusion plate is conical before above-mentioned, or circular arc, or curvilinerar figure repeatedly.
The shape of above-mentioned back diffusion plate is conical, or circular arc, or curvilinerar figure repeatedly.
Used for range hood centrifugal blower of the present utility model is owing to adopted the structure of impeller band rotary diffusing device, the velocity of flue gas of impeller outlet is reduced, reduced when flue gas enters spiral case because separation losses that sudden enlargement causes and the loss of the whirlpool in the spiral case, alleviated the jet-tail phenomenon of blade exit, can effectively improve air quantity, blast and reduce eddy current crack; Simultaneously the separation of flow district of impeller outlet is reduced, alleviate of the impact of impeller outlet air-flow, effectively reduce rotational noise spiral case.The utility model is a kind of air quantity that can improve blower fan, and blast effectively reduces the cooking-fume exhauster blower structure of aerodynamic noise.
Description of drawings
Fig. 1 is the utility model blower fan system assembled construction schematic representation.
Fig. 2 is the structural representation of the utility model band rotary diffusing device impeller.
Fig. 3 is the structural representation of the conical Diffuser impeller of the utility model.
Fig. 4 is the structural representation of the utility model circular arc Diffuser impeller.
Fig. 5 is the repeatedly structural representation of curvilinerar figure Diffuser impeller of the utility model.
Embodiment
Embodiment 1:
Structural representation of the present utility model as shown in Figure 1, include spiral case 1 and the centrifugal impeller 2 that places in the spiral case 1, wherein spiral case 1 includes spiral case coaming plate 11, plate 13 behind spiral case header board 12 and the spiral case, wherein plate 13 is connected to the front-end face and the ear end face of spiral case coaming plate 11 behind spiral case header board 12 and the spiral case, centrifugal impeller 2 includes impeller shroud 21, impeller hub disk 22 and blade 23, impeller shroud 21 and impeller hub disk 22 are connected to the front end and the rear end of blade 23, centrifugal impeller 2 places by spiral case coaming plate 11, in the cavity that plate 13 surrounds behind spiral case header board 12 and the spiral case, diffusion plate 211 before wherein impeller shroud 21 is provided with, impeller hub disk 22 is provided with back diffusion plate 221, preceding diffusion plate 211 radially extends from two end part 231 beginnings of blade 23 respectively outward with back diffusion plate 221, form flaring expanding channel, constitute the rotary diffusing device.
In the present embodiment, above-mentioned spiral case header board 12 and spiral case coaming plate 11 are by being welded to connect, and plate 13 and spiral case coaming plate 11 are by being welded to connect behind the above-mentioned spiral case, and the three constitutes spiral case 1.
In the present embodiment, above-mentioned impeller shroud 21 and blade 23 are by riveting or being welded to connect, and above-mentioned impeller hub disk 22 and blade 23 are by riveting or being welded to connect, and the three forms centrifugal impeller 2.Diffusion plate 211 is the part of impeller shroud 21 before above-mentioned, preceding diffusion plate 211 and impeller shroud 21 global formations; Above-mentioned back diffusion plate 221 is the part of impeller hub disk 22, back diffusion plate 221 and impeller hub disk 22 global formations.
Above-mentioned impeller 2 is D1 at the diameter at 231 places, two end part of blade 23, and the external diameter of forward and backward diffusion plate is D2,
Choosing of above-mentioned D2 must guarantee that preceding diffusion plate 211 and back diffusion plate 221 are not less than 5mm with spiral case coaming plate 11 along impeller 2 minimum range H1 radially, preceding diffusion plate 211 and spiral case header board 12 are not less than 3mm along impeller 2 axial minimum range H2, and plate 13 is not less than 3mm along impeller 2 axial minimum range H3 behind back diffusion plate 221 and the spiral case.
The preceding diffusion plate 211 of above-mentioned centrifugal impeller 2 and impeller 2 axial angles are φ 1, and back diffusion plate 221 and impeller 2 axial angles are φ 2, and wherein 95 degree≤φ 1≤150 spend, and 95 degree≤φ 2≤150 spend.
The shape of diffusion plate 211 and back diffusion plate 221 is conical before above-mentioned.
The utility model rotary diffusing device impeller makes range hood integral both can improve the air quantity of blower fan, and blast effectively reduces aerodynamic noise again.
Embodiment 2:
The structure of present embodiment is identical with embodiment 1, difference be centrifugal impeller 2 forward and backward diffusion plate be shaped as circular arc.Other structures repeat no more.
Embodiment 3:
The structure of present embodiment is identical with embodiment 1, difference be centrifugal impeller 2 forward and backward diffusion plate be shaped as repeatedly curved.Other structures repeat no more.
Claims (7)
1. cooking-fume exhauster blower structure, include spiral case (1) and place the interior centrifugal impeller (2) of spiral case (1), wherein spiral case (1) includes spiral case coaming plate (11), plate (13) behind spiral case header board (12) and the spiral case, wherein plate (13) is connected to the front-end face and the ear end face of spiral case coaming plate (11) behind spiral case header board (12) and the spiral case, centrifugal impeller (2) includes impeller shroud (21), impeller hub disk (22) and blade (23), impeller shroud (21) and impeller hub disk (22) are connected to the front end and the rear end of blade (23), centrifugal impeller (2) places by spiral case coaming plate (11), in the cavity that plate (13) surrounds behind spiral case header board (12) and the spiral case, it is characterized in that impeller shroud (21) is provided with preceding diffusion plate (211), impeller hub disk (22) is provided with back diffusion plate (221), preceding diffusion plate (211) radially extends from two end part (231) beginning of blade (23) respectively outward with back diffusion plate (221), forms flaring expanding channel.
2. cooking-fume exhauster blower structure according to claim 1 is characterized in that the diameter that above-mentioned impeller (2) is located at the two end part (231) of blade (23) is D1, and the external diameter of forward and backward diffusion plate is D2,
3. cooking-fume exhauster blower structure according to claim 2, it is characterized in that choosing of above-mentioned D2 must guarantee that preceding diffusion plate (211) and back diffusion plate (221) are not less than 5mm with spiral case coaming plate (11) along impeller (2) minimum range H1 radially, preceding diffusion plate (211) is not less than 3mm with spiral case header board (12) along the axial minimum range H2 of impeller (2), and plate (13) is not less than 3mm along the axial minimum range H3 of impeller (2) behind back diffusion plate (221) and the spiral case.
4. cooking-fume exhauster blower structure according to claim 1 is characterized in that the axial angle of above-mentioned preceding diffusion plate (211) and impeller (2) is φ 1,95 degree≤φ 1≤150 degree.
5. cooking-fume exhauster blower structure according to claim 4 is characterized in that the axial angle of above-mentioned back diffusion plate (221) and impeller (2) is φ 2,95 degree≤φ 2≤150 degree.
6. according to each described cooking-fume exhauster blower structure of claim 1 to 5, it is characterized in that above-mentioned before the shape of diffusion plate (211) be conical, or circular arc, or curvilinerar figure repeatedly.
7. according to each described cooking-fume exhauster blower structure of claim 1 to 5, the shape that it is characterized in that above-mentioned back diffusion plate (221) is conical, or circular arc, or curvilinerar figure repeatedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202367683U CN201535267U (en) | 2009-09-30 | 2009-09-30 | Fan structure of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202367683U CN201535267U (en) | 2009-09-30 | 2009-09-30 | Fan structure of range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535267U true CN201535267U (en) | 2010-07-28 |
Family
ID=42535046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202367683U Expired - Lifetime CN201535267U (en) | 2009-09-30 | 2009-09-30 | Fan structure of range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535267U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984261A (en) * | 2010-11-19 | 2011-03-09 | 美的集团有限公司 | Centrifugal fan volute of oil fume purification device |
| CN105020984A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Hot-air drying machine capable of utilizing waste heat and achieving penetrating countercurrent fluidization |
| CN105066653A (en) * | 2015-08-14 | 2015-11-18 | 吉首大学 | Heat pump type tail heat recovery and penetrating counterflow fluidized drying machine |
| CN105115279A (en) * | 2015-08-14 | 2015-12-02 | 吉首大学 | Heat-pump type exhaust heat utilization penetration counter-flow fluidized drying machine |
| CN105134650A (en) * | 2015-09-23 | 2015-12-09 | 华帝股份有限公司 | Novel range hood impeller |
| CN106593947A (en) * | 2015-10-15 | 2017-04-26 | 珠海格力电器股份有限公司 | Centrifugal fan impeller and centrifugal fan |
| CN106762818A (en) * | 2017-03-29 | 2017-05-31 | 广东美的厨房电器制造有限公司 | Wind wheel, blower fan for range hood and the range hood with it |
| CN107965475A (en) * | 2017-05-09 | 2018-04-27 | 宁波方太厨具有限公司 | A kind of noise reducing type radial fan |
| CN108050102A (en) * | 2018-01-29 | 2018-05-18 | 美的集团股份有限公司 | Impeller, fan assembly and electric appliance |
| WO2019144733A1 (en) * | 2018-01-29 | 2019-08-01 | 美的集团股份有限公司 | Smoke exhaust apparatus |
-
2009
- 2009-09-30 CN CN2009202367683U patent/CN201535267U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984261A (en) * | 2010-11-19 | 2011-03-09 | 美的集团有限公司 | Centrifugal fan volute of oil fume purification device |
| CN101984261B (en) * | 2010-11-19 | 2012-07-11 | 美的集团有限公司 | Centrifugal fan volute of oil fume purification device |
| CN105020984A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Hot-air drying machine capable of utilizing waste heat and achieving penetrating countercurrent fluidization |
| CN105066653A (en) * | 2015-08-14 | 2015-11-18 | 吉首大学 | Heat pump type tail heat recovery and penetrating counterflow fluidized drying machine |
| CN105115279A (en) * | 2015-08-14 | 2015-12-02 | 吉首大学 | Heat-pump type exhaust heat utilization penetration counter-flow fluidized drying machine |
| CN105020984B (en) * | 2015-08-14 | 2017-12-19 | 吉首大学 | A kind of tail heat utilization hot air type penetrates adverse current fluidized dryer |
| CN105134650A (en) * | 2015-09-23 | 2015-12-09 | 华帝股份有限公司 | Novel range hood impeller |
| CN106593947A (en) * | 2015-10-15 | 2017-04-26 | 珠海格力电器股份有限公司 | Centrifugal fan impeller and centrifugal fan |
| CN106762818A (en) * | 2017-03-29 | 2017-05-31 | 广东美的厨房电器制造有限公司 | Wind wheel, blower fan for range hood and the range hood with it |
| CN107965475A (en) * | 2017-05-09 | 2018-04-27 | 宁波方太厨具有限公司 | A kind of noise reducing type radial fan |
| CN108050102A (en) * | 2018-01-29 | 2018-05-18 | 美的集团股份有限公司 | Impeller, fan assembly and electric appliance |
| WO2019144733A1 (en) * | 2018-01-29 | 2019-08-01 | 美的集团股份有限公司 | Smoke exhaust apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER NAME: MEIDI GROUP CO. LTD. |
|
| CP03 | Change of name, title or address |
Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Penglai Road, Beijiao Town, Foshan District, Guangdong, China, Patentee before: Midea Group |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100728 |