CN202360466U - Multi-blade centrifugal fan with multifunctional flow guiding device - Google Patents
Multi-blade centrifugal fan with multifunctional flow guiding device Download PDFInfo
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- CN202360466U CN202360466U CN2011205398337U CN201120539833U CN202360466U CN 202360466 U CN202360466 U CN 202360466U CN 2011205398337 U CN2011205398337 U CN 2011205398337U CN 201120539833 U CN201120539833 U CN 201120539833U CN 202360466 U CN202360466 U CN 202360466U
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- functional flow
- guide vane
- guide device
- flow guide
- blower fan
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Abstract
Disclosed is a multi-blade centrifugal fan with a multifunctional flow guiding device, which comprises a multifunctional flow guiding device and a fan body. The multifunctional flow guiding device comprises a collector and air director, and is connected with the fan body through a mounting edge on the collector; the air director is in a cylindrical or cone shape, a plurality of guiding blades or guide vanes are distributed evenly on a circumference of the air director, the middle portion of the air director is provided with a rectifier or through-holes; direction of the outlet sections of the guiding blades or the guide vanes are as same as a radial direction of a vane wheel, or an included angle formed by the direction of the outlet sections of the guiding blades or the guide vanes and the radial direction of the vane wheel is no more than 80 DEG; the multifunctional flow guiding device has various functions such as flow collection, rectification, flow guiding, condensation and separation of lampblack, collection of liquid and oil, safety protection and the like, can improve a vane wheel inlet gas flow field remarkably, reduce gas flow losses and gas flow noises, increase air volume of the fan, improve fan efficiency and acquire the maximum wind pressure; the multi-blade centrifugal fan with the multifunctional flow guiding device has obvious energy-saving and environmental protection effects, is applicable to various fields such as range hoods and the like and has a broad application prospect.
Description
Technical field
The present invention relates to centrifugal blower, particularly have the multiple wing type centrifugal blower fan of multi-functional flow guide device.
Background technique
Range hood on the market, majority all are to use multiple wing type centrifugal blower fan.
For improving the flowing state before air-flow gets into impeller; Slip ring generally all is equipped with in inlet at centrifugal blower; It is coniform or circular-arc that slip ring is, because slip ring has bigger distance apart from the impeller blade import, slip ring is quite limited to the improvement in blower fan inlet air flow flow field.
The air velocity distribution of centrifugal blower fan blade wheel inlet not only can have influence on blast, air quantity, the efficient of blower fan, also can have influence on the noise of blower fan; Draught fan impeller inlet air velocity distribution is disorderly, and blast, air quantity, the efficient of blower fan are reduced, and fan noise increases; These all can reduce the oil smoke discharge and the purification of range hood, and increase its use noise.
China's utility model patent " range hood air unit " (patent No.: CN201020287875.1 with rectified action; Notification number: CN201757445U), " it is characterized in that: the fixing covering in the intake grill place of this volute of blower (1) is equipped with screens (4) "; " rectification mesh be in square or the rhombus a kind of "; " when air-flow entered intake grill, through the rectified action of screens, flue gas can not form turbulent flow when entering intake grill." this patent takes at the intake grill place of volute of blower the turbulent situation that screens improves air-flow to be installed, to reach the purpose that reduces noise.But because there is certain distance at this patent screens position apart from blade inlet, the effect of this improvement also can be limited to.
At present, on multiple wing impeller centrifugal blower, still do not have more efficiently flow guide device, be used to improve the air velocity distribution at impeller inlet place.
Summary of the invention
The present invention is directed to above-mentioned deficiency, proposed a kind of multiple wing type centrifugal blower fan with multi-functional flow guide device, purpose is exactly to pass through multi-functional flow guide device; Improve the air velocity distribution of centrifugal blower fan blade wheel inlet; Improve blast, air quantity and the efficient of blower fan, reduce the noise of blower fan, make the range hood of dress with this blower fan; Lampblack absorbing amount and oil smoke separate, purification ratio is improved significantly, and noise obviously reduces.
Technological scheme of the present invention is made up of two independent invention contents of same design, and is specific as follows:
1, the content of first independent invention
Multiple wing type centrifugal blower fan with multi-functional flow guide device; Form by blower fan main body that contains the multiple wing impeller and multi-functional flow guide device; Multi-functional flow guide device includes slip ring at least, and slip ring is provided with installs the limit, through the limit is installed; Adopt mechanical connection manner; Multi-functional flow guide device and blower fan body shell are connected as a single entity, it is characterized in that: described multi-functional flow guide device also comprises fluid director, and described fluid director is made up of installing and locating part under installing and locating part, the guide vane on guide vane, the guide vane; Installing and locating part and slip ring are connected as a single entity on the guide vane, or installing and locating part and slip ring are integrated on the guide vane; Guide vane upper end is fixed on the guide vane on the installing and locating part, and the guide vane lower end is fixed under the guide vane on the assembling set; A plurality of guide vanes along circumference be cylindric be uniformly distributed with or be coniform be uniformly distributed with.
Preferably, described guide vane is plane or is the curved surface shape, all is with positioning boss or gulde edge on guide vane upper-end surface, the lower end surface.
Preferably, described guide vane, its blade profile outlet section direction is radially consistent with impeller, or blade profile outlet section direction and impeller radially angle be not more than 80 degree.
Preferably, the installing and locating part constitutes by conical surface or by the plane on the described guide vane, on conical surface or in the plane, is uniformly distributed with a plurality of guide vane mounting grooves or mounting hole along the circumference.
Preferably; The installing and locating part is made up of guide vane construction section and intermediate portion section under the described guide vane; Described guide vane construction section is plane, or is conical surface shape, is uniformly distributed with a plurality of guide vane mounting grooves or mounting hole on the guide vane construction section along the circumference; Described intermediate portion section is provided with rectifier or is provided with through hole, and described rectifier is a cone shape, or is that curved surface is cone-shaped, or is circular cone shape, and described through hole places on the conical surface or plane of intermediate portion section, is the single hole shape or is cellular; Guide vane construction section and intermediate portion section are connected as a single entity.
2, the content of second independent invention
Multiple wing type centrifugal blower fan with multi-functional flow guide device; Be made up of blower fan main body that contains the multiple wing impeller and multi-functional flow guide device, multi-functional flow guide device includes slip ring at least, and slip ring is provided with installs the limit; Through the limit is installed; Adopt mechanical connection manner, multi-functional flow guide device and blower fan main body intake grill end housing body are connected as a single entity, it is characterized in that: described multi-functional flow guide device also comprises fluid director; Described fluid director is made up of fluid director main body and fluid director bottom; Fluid director main body upper end is connected as a single entity with slip ring; Fluid director main body lower end and fluid director bottom are connected as a single entity, and the fluid director main body is cylindric or is coniform, on the fluid director main body, is uniformly distributed with a plurality of guide plates along the circumference.
Preferably, described guide plate is plane or is the curved surface shape; Guide plate is single shape or is how row's shapes are uniformly distributed along the circumference; Guide plate outlet section direction is radially consistent with impeller, or guide plate outlet section direction and impeller angle radially are not more than 80 degree.
Preferably, be provided with rectifier or be provided with through hole in intermediate portion, described fluid director bottom, described rectifier is a cone shape; Or be that curved surface is cone-shaped; Or be circular cone shape, described through hole places on the conical surface or plane of intermediate portion, fluid director bottom, is the single hole shape or is cellular.
In above-mentioned two independent invention contents, also be provided with the ring-type collecting tank on the described multi-functional flow guide device, collecting tank and slip ring combine together, and the collecting tank cross section is arc shape or non-arc shape.
In above-mentioned two independent invention contents, the radial clearance between multi-functional flow guide device and impeller, axial clearance all are not less than 1 millimeter.
The present invention can reach following beneficial effect:
1, the multiple wing type centrifugal blower fan that has multi-functional flow guide device, its multi-functional flow guide device have afflux, rectification, water conservancy diversion, to the condensation of oil smoke with separate, to multinomial functions such as the collection of liquid and oil, safety protections.
2, the multiple wing type centrifugal blower fan that has multi-functional flow guide device can significantly improve the impeller inlet gas flowfield, reduces the gas flow loss and the noise that flows, and improves fan delivery and efficient, obtains maximum wind pressure.
3, the multiple wing type centrifugal blower fan that has multi-functional flow guide device, the energy-saving and environmental protection effect is obvious, is applicable to multiple fields such as range hood, has a extensive future.
4, the lampblack absorbing of multiple wing type centrifugal blower fan of the present invention is housed, and the isolation of purified rate of its blast, air quantity, efficient, oil smoke etc. all is improved significantly, and noise obviously descends, and range hood energy-saving and environmental protection effect is obvious.
Description of drawings
Attached drawings only is a part typical structure embodiment's of the present invention schematic representation, and wherein Fig. 1～13 are structural representations of first independent invention, and Figure 14～19 are structural representations of second independent invention, and is concrete
Explain as follows:
Fig. 1 is the blower fan structure schematic representation (sectional view) of the embodiment of the invention 1; Guide vane is cylindric distribution on circumference;
Fig. 2 is the multi-functional fluid director structural representation (sectional view) of the embodiment of the invention 1;
Fig. 3, the 4th, the slip ring of the multi-functional fluid director of the embodiment of the invention 1 and guide vane mounting means structural representation (this embodiment's slip ring and guide vane mounting means are integrated); Wherein, Fig. 3 is plan view (sectional view), and Fig. 4 is a plan view;
Fig. 5, the 6th, assembling set structural representation under the guide vane of the multi-functional fluid director of the embodiment of the invention 1, wherein, Fig. 5 (sectional view) is a plan view, Fig. 6 is a plan view;
Fig. 7 is the multi-functional fluid director structural representation (sectional view) of the embodiment of the invention 2;
Fig. 8 is the blower fan structure schematic representation (sectional view) of the embodiment of the invention 3, and guide vane is coniform distribution on circumference;
The multi-functional fluid director structural representation (sectional view) of Fig. 9 embodiment of the invention 3;
Figure 10, the 11st, the two kinds of different structure schematic representation (partial sectional view) when change guide vane mounting point formed guide vane outlet section direction is radially consistent with impeller in the embodiment of the invention;
Figure 12, the 13rd, change in the embodiment of the invention guide vane mounting point formed guide vane outlet section direction and impeller radially angle be not more than 80 two kinds of different structure schematic representation (partial sectional view) when spending;
Figure 14 is the blower fan structure schematic representation (sectional view) of the embodiment of the invention 4; Guide plate is being on the fluid director main body of column along circle distribution;
Figure 15 is the fluid director structural representation of the embodiment of the invention 4;
Figure 16 is the blower fan structure schematic representation (sectional view) of the embodiment of the invention 5; Guide plate is being on the cone shape fluid director main body along circle distribution;
Figure 17 is the structural representation (partial sectional view) when guide plate outlet section direction is radially consistent with impeller in the embodiment of the invention;
Figure 18, the 19th, in the embodiment of the invention guide plate outlet section direction and impeller radially angle be not more than 80 two kinds of different structure schematic representation (partial sectional view) when spending.
Embodiment
The present invention obtains two independent inventions by same design and constitutes, and below in conjunction with implementing illustration, is described in detail embodiment of the present invention:
1, the embodiment of first independent invention
As shown in Figure 1; Multiple wing type centrifugal blower fan with multi-functional flow guide device is made up of blower fan main body 1 that contains the multiple wing wind wheel and multi-functional flow guide device 2, and multi-functional flow guide device includes slip ring 21 at least; Slip ring is provided with installs limit 211; Through the limit is installed, adopt thread connecting mode, multi-functional flow guide device and blower fan main body intake grill end housing body are connected as a single entity; As shown in Figure 2, described multi-functional flow guide device also comprises fluid director 22, and described fluid director is made up of 223 of installing and locating under installing and locating part 222, the guide vane on guide vane 221, the guide vane; Installing and locating part 222 is integrated with slip ring 21 on the guide vane; Guide vane is the curved surface shape, all is with positioning boss 221a on guide vane upper-end surface, the lower end surface, and guide vane upper end is fixed on the guide vane on the installing and locating part, and the guide vane lower end is fixed under the guide vane on the assembling set 223; A plurality of guide vanes are cylindric along circumference and are uniformly distributed with; Like Fig. 3, shown in 4, installing and locating part 222 is made up of cambered surface section and planar section on the guide vane, on planar section, is uniformly distributed with a plurality of guide vane mounting groove 221b along the circumference; Like Fig. 5, shown in 6, installing and locating part 223 is made up of guide vane construction section 223a and intermediate portion section 223b under the guide vane, and the guide vane construction section is plane, is uniformly distributed with a plurality of guide vane mounting groove 221c on the guide vane construction section along the circumference; Intermediate portion Duan Shangshe rectifier 224, rectifier is made up of arc surface, is coniform; Guide vane construction section and intermediate portion section are connected as a single entity; Guide vane outlet section direction can be selected as the case may be, preferably like Figure 10 or shown in Figure 11 and the radially consistent structure of impeller; Also can select like Figure 12 or shown in Figure 13 and the radially inconsistent structure of impeller; On slip ring 21, establish annular collecting tank 212, the curved shape in collecting tank cross section is seen shown in Figure 3.
Embodiment 2
As shown in Figure 7, present embodiment and embodiment's 1 difference only are, under fluid director, are provided with a plurality of through holes 24 on the conical surface of the intermediate portion 223b of assembling set 223 and the plane.
Embodiment 3
Like Fig. 8, shown in 9, present embodiment and embodiment's 1 difference only are that a plurality of guide vanes 221 are coniform and are uniformly distributed with, and installing and locating part 222 is made up of the arc shaped surface and the conical surface on the guide vane, on the conical surface, are evenly equipped with a plurality of guide vane mounting groove 221b; Guide vane construction section under the guide vane on the installing and locating part 223 is a conical surface shape, and is evenly equipped with a plurality of guide vane mounting groove 221c.
In the foregoing description, guide vane outlet section direction can be according to rotation speed of fan and wind wheel blade shape, selects radially being in the scope of 0～80 degree with impeller, and preferred angle is 0～45 degree.
2, the embodiment of second independent invention
Embodiment 4
Shown in figure 14; Multiple wing type centrifugal blower fan with multi-functional flow guide device; Be made up of blower fan main body 1 that contains the multiple wing wind wheel and multi-functional flow guide device 2, multi-functional flow guide device includes slip ring 21 at least, and slip ring is provided with installs limit 211; Through the limit is installed, adopt thread connecting mode that multi-functional flow guide device and blower fan main body intake grill end housing body are connected as a single entity; Shown in figure 15, multi-functional flow guide device also comprises fluid director 22; Fluid director is made up of fluid director main body 2201 and fluid director bottom 2202; Fluid director main body upper end is connected as a single entity with slip ring 21; Fluid director main body lower end and fluid director bottom are connected as a single entity, and the fluid director main body is cylindric, on the fluid director main body, is uniformly distributed with a plurality of guide plates 2203 along the circumference; Intermediate portion, fluid director bottom is provided with rectifier 224, and it is coniform that rectifier is; On slip ring 21, establish annular collecting tank 212, the curved shape in collecting tank cross section; Shown in figure 17, guide plate is that straight line shape is uniformly distributed along the circumference; Guide plate outlet section direction is radially consistent with impeller.
Included slip ring 21, the fluid director main body 2201 that contains guide plate 2203 and the fluid director bottom 2202 of multi-functional flow guide device in the present embodiment, promptly integral production forms, but also split combines.
Embodiment 5
Shown in figure 16, present embodiment and embodiment's 4 differences only are that the fluid director main body of band guide plate is coniform.
Embodiment 6
Present embodiment and embodiment's 4 differences only are, rectifier is not established in intermediate portion, fluid director bottom, are provided with a plurality of through holes 24 (do not have figure, establishing through-hole structure can be with reference to Fig. 7).
In the foregoing description, guide plate outlet section direction also can be according to rotation speed of fan and wind wheel blade shape, selects radially being in the scope of 0～80 degree with impeller, and preferred angle is 0～45 degree.
In the embodiment of above-mentioned two kinds of independent inventions, the radial clearance between multi-functional flow guide device and draught fan impeller, axial clearance all are not less than 1 millimeter.
The present invention promptly can make with metallic material, also can make with nonmetallic material, looks purposes and decides.
The foregoing description only is a part typical structure of the present invention.
Centrifugal blower involved in the present invention and dress all belong to the scope of the present invention's protection with the product of this blower fan.
Claims (10)
1. the multiple wing type centrifugal blower fan that has multi-functional flow guide device; Form by blower fan main body (1) that contains the multiple wing impeller and multi-functional flow guide device (2); Multi-functional flow guide device includes slip ring (21) at least, and slip ring is provided with installs limit (211), through the limit is installed; Adopt mechanical connection manner; Multi-functional flow guide device and blower fan body shell are connected as a single entity, it is characterized in that: described multi-functional flow guide device also comprises fluid director (22), and described fluid director is made up of installing and locating part (223) under installing and locating part (222), the guide vane on guide vane (221), the guide vane; Installing and locating part and slip ring (21) are connected as a single entity on the guide vane, or installing and locating part and slip ring are integrated on the guide vane; Guide vane upper end is fixed on the guide vane on the installing and locating part, and the guide vane lower end is fixed under the guide vane on the assembling set; A plurality of guide vanes along circumference be cylindric be uniformly distributed with or be coniform be uniformly distributed with.
2. the multiple wing type centrifugal blower fan with multi-functional flow guide device according to claim 1 is characterized in that: described guide vane is plane or is the curved surface shape, all is with positioning boss or gulde edge (221a) on guide vane upper-end surface, the lower end surface.
3. the multiple wing type centrifugal blower fan with multi-functional flow guide device according to claim 1 is characterized in that: described guide vane, its blade profile outlet section direction is radially consistent with impeller, or blade profile outlet section direction and impeller radially angle be not more than 80 degree.
4. the multiple wing type centrifugal blower fan with multi-functional flow guide device according to claim 1; It is characterized in that: the installing and locating part constitutes by conical surface or by the plane on the described guide vane; On conical surface or in the plane, be uniformly distributed with a plurality of guide vane mounting grooves or mounting hole (221b) along the circumference.
5. the multiple wing type centrifugal blower fan with multi-functional flow guide device according to claim 1; It is characterized in that: installing and locating part (223) is made up of guide vane construction section (223a) and intermediate portion section (223b) under the described guide vane; Described guide vane construction section is plane; Or be conical surface shape, be uniformly distributed with a plurality of guide vane mounting grooves or mounting hole (221c) on the guide vane construction section along the circumference; Described intermediate portion section is provided with rectifier (224) or is provided with through hole (24), and described rectifier is a cone shape, or is that curved surface is cone-shaped, or is circular cone shape, and described through hole places on the conical surface or plane of intermediate portion section, is the single hole shape or is cellular; Guide vane construction section and intermediate portion section are connected as a single entity.
6. the multiple wing type centrifugal blower fan that has multi-functional flow guide device; Be made up of blower fan main body (1) that contains the multiple wing impeller and multi-functional flow guide device (2), multi-functional flow guide device includes slip ring (21) at least, and slip ring is provided with installs limit (211); Through the limit is installed; Adopt mechanical connection manner, multi-functional flow guide device and blower fan main body intake grill end housing body are connected as a single entity, it is characterized in that: described multi-functional flow guide device (2) also comprises fluid director (22); Described fluid director is made up of fluid director main body (2201) and fluid director bottom (2202); Fluid director main body upper end is connected as a single entity with slip ring (21); Fluid director main body lower end and fluid director bottom are connected as a single entity; The fluid director main body is cylindric or is coniform, on the fluid director main body, is uniformly distributed with a plurality of guide plates (2203) along the circumference.
7. the multiple wing type centrifugal blower fan with multi-functional flow guide device according to claim 6 is characterized in that: described guide plate is plane or is the curved surface shape; Guide plate is single shape or is how row's shapes are uniformly distributed along the circumference; Guide plate outlet section direction is radially consistent with impeller, or guide plate outlet section direction and impeller angle radially are not more than 80 degree.
8. the multiple wing type centrifugal blower fan with multi-functional flow guide device according to claim 6; It is characterized in that: be provided with rectifier (224) or be provided with through hole (24) in (2202) intermediate portion, described fluid director bottom; Described rectifier is a cone shape, or is that curved surface is cone-shaped, or is circular cone shape; Described through hole places on the conical surface or plane of intermediate portion, fluid director bottom, is the single hole shape or is cellular.
9. according to claim 1 or 6 described multiple wing type centrifugal blower fans with multi-functional flow guide device; It is characterized in that: also be provided with ring-type collecting tank (212) on the described multi-functional flow guide device; Collecting tank and slip ring (21) combine together, and the collecting tank cross section is arc shape or non-arc shape.
10. according to claim 1 or 6 described multiple wing type centrifugal blower fans with multi-functional flow guide device, it is characterized in that: the radial clearance between multi-functional flow guide device and impeller, axial clearance all are not less than 1 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205398337U CN202360466U (en) | 2011-12-15 | 2011-12-15 | Multi-blade centrifugal fan with multifunctional flow guiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205398337U CN202360466U (en) | 2011-12-15 | 2011-12-15 | Multi-blade centrifugal fan with multifunctional flow guiding device |
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| Publication Number | Publication Date |
|---|---|
| CN202360466U true CN202360466U (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205398337U Expired - Fee Related CN202360466U (en) | 2011-12-15 | 2011-12-15 | Multi-blade centrifugal fan with multifunctional flow guiding device |
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| CN (1) | CN202360466U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562672A (en) * | 2011-12-15 | 2012-07-11 | 广东恒业电器有限公司 | Multi-wing centrifugal fan with multifunctional airflow diversion device |
| CN104454664A (en) * | 2014-11-26 | 2015-03-25 | 宁波方太厨具有限公司 | Multi-wing centrifugal fan |
-
2011
- 2011-12-15 CN CN2011205398337U patent/CN202360466U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562672A (en) * | 2011-12-15 | 2012-07-11 | 广东恒业电器有限公司 | Multi-wing centrifugal fan with multifunctional airflow diversion device |
| CN104454664A (en) * | 2014-11-26 | 2015-03-25 | 宁波方太厨具有限公司 | Multi-wing centrifugal fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20141215 |
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| EXPY | Termination of patent right or utility model |