CN206682045U - A kind of strong suction multi-wing centrifugal fan - Google Patents
A kind of strong suction multi-wing centrifugal fan Download PDFInfo
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- CN206682045U CN206682045U CN201720370875.XU CN201720370875U CN206682045U CN 206682045 U CN206682045 U CN 206682045U CN 201720370875 U CN201720370875 U CN 201720370875U CN 206682045 U CN206682045 U CN 206682045U
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- support
- guide vane
- impeller
- outer ring
- centrifugal fan
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Abstract
It the utility model is related to a kind of strong suction multi-wing centrifugal fan, including spiral case (1), the spiral case (1) is provided with air inlet (11) and air outlet (12), impeller (2) is contained in the spiral case (1), impeller (2) described in motor (4) drive connection, on wheel hub (6), the wheel hub (6) is connected on the spiral case (1) motor (4) support limit；It is characterized in that：At least two panels guide vane (3) is also interval with the inner side of the impeller (2) in the spiral case (1), each guide vane arranges that the rotation direction of screw arrangement is identical with the rotation direction of the impeller (2) relative to the center convolution of the impeller (2)；The motor (4) also each guide vane (3) of drive connection.
Description
Technical field
Centrifugal blower is the utility model is related to, refers specifically to a kind of strong suction multi-wing centrifugal fan.
Background technology
The blower fan that range hood uses is multiple wing type centrifugal blower fan mostly, the air velocity distribution at the impeller inlet of centrifugal blower
The disorderly gas field such as turbulent flow, eddy flow can be produced, the air quantity, blast, total pressure efficiency of blower fan can be made reduce.
CN201020287875.1 discloses one kind《Range hood air unit with rectified action》, it is in blower fan snail
The air inlet of shell fixes covering and is provided with screens.So, when air-flow passes through air inlet, by the rectified action of screens,
Flue gas is avoided to form turbulent flow when entering air inlet；But because there is a spacing at this patent screens position at vane inlet
From this improved effect or unobvious.
For another example CN201110432232.0 discloses one kind《Multiple wing type centrifugal blower fan with Multifunctional flow-guiding device》, its
Guide vane and air deflector are installed in impeller inner chamber, the performance such as blast, air quantity to range hood makes moderate progress, but because
Guide vane, the air deflector of the patent only cover the little space of impeller inner chamber, that the soot gas of impeller inner chamber are inwhole
Effectively water conservancy diversion.
The content of the invention
Technical problem to be solved in the utility model is to provide one kind for the present situation of prior art and can significantly increase suction
Power, improve the strong suction multi-wing centrifugal fan of flow field and excellent noise reduction effect at impeller inlet.
Technical scheme is used by the utility model solves above-mentioned technical problem：The strong suction multi-wing centrifugal fan, bag
Spiral case is included, the spiral case is provided with air inlet and air outlet, and impeller is contained in the spiral case, leaf described in motor drive connection
Wheel, the motor support is spacing on wheel hub, and the wheel hub is connected on the spiral case；
It is characterized in that：
At least two panels guide vane, each guide vane phase are also interval with the inner side of the impeller in the spiral case
Arrange that the rotation direction of screw arrangement is identical with the rotation direction of the impeller for the center convolution of the impeller；The motor also drives
Connect each guide vane.
Preferably, each guide vane is helicoid or globoidal structure, and the external end edge of the guide vane is saw
Dentation is wavy.The program can change guide vane external end edge tail vortex shedding position, increase the distance between center of vorticity,
The position to come off is inhibited, and then reduces aerodynamic noise caused by the unsteady pressure and wake's flow field of blade surface.
Preferably, the inlet angle α of each guide vane is 80~100 °, and the angle of outlet β of each guide vane is 140
~175 °.
It is preferred that the external diameter of each guide vane is adapted with the size of the air inlet, and the guide vane and institute
It is 3~10mm to state the minimum clearance between impeller.
Guide vane can have a variety of positioning and mounting means, and preferably, each blade is connected on support, the branch
Frame connects the output shaft of the motor.
It is preferred that the support includes the first support outer ring being arranged concentrically and the first support inner ring, the second support outer ring and the
Two support inner rings, the first support inner ring are connected on location-plate, and the location-plate connects the output shaft of the motor；
The drive connection mode of support and motor can also be that the second support outer ring is connected on the second location-plate, institute
The second location-plate is stated to be connected on the support frame of the impeller；
The edge of each guide vane is spacing respectively to support outer ring, the first support inner ring, the second support described first
On outer ring and the second support inner ring.The structure is convenient for assembly, and inlet flow field is not impacted.
In above-mentioned each scheme, the 3~8 of a diameter of first support inner ring diameter of preferably described first support outer ring
Times.
The support can also be rotating shaft, and each guide vane is both connected in the rotating shaft；The output of the motor
Rotating shaft described in axle drive connection.The supporting structure is simpler.
The diameter of the second support outer ring can be 3~8 times of the described second support inner ring diameter.
Compared with prior art, strong suction multi-wing centrifugal fan provided by the utility model, motor drive impeller simultaneously
And guide vane, guide vane operate in impeller, air-flow is spun up by first being driven after spiral case air inlet by inducer, is revolved
Turn the centrifugal force after accelerating air-flow is thrown in the blade of impeller, again accelerate flow rotation, guide vane and impeller twin-stage
Accelerate, suction is strong, substantially increases the suction effect of centrifugal blower；Meanwhile air-flow is when passing through guide vane, it is necessary to around overwinding
Flow blade and enter in impeller blade, in this process, air-flow can contact with swirl vane and filter out a part of grease,
Obtain preferable filter effect.
Be particularly suitable for use in various range hoods of the utility model use.
Brief description of the drawings
Fig. 1 is the longitudinal sectional view of the assembling structure of the utility model embodiment 1；
Fig. 2 is the schematic perspective view of the assembling structure of the utility model embodiment 1；
Fig. 3 is the solid of the decomposition texture of the utility model embodiment 1；
Fig. 4 is the assembling structure floor map of guide vane and support in the utility model embodiment 1；
Fig. 5 is the schematic perspective view of the assembling structure of guide vane and support in the utility model embodiment 2；
Fig. 6 is Fig. 5 front view；
Fig. 7 is guide vane and the schematic perspective view of support assembling structure in the utility model embodiment 3；
Fig. 8 is the longitudinal sectional view of the assembling structure of the utility model embodiment 3.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in Figures 1 to 4, the strong suction multi-wing centrifugal fan includes：
Spiral case 1, air inlet 11 and air outlet 12 are which is provided with, each blade of impeller 2 is fixed on support frame 21, impeller 2
It is contained in spiral case 1, the drive connection impeller 2 of motor 4；On wheel hub 6, wheel hub 6 is connected on spiral case 1 support limit of motor 4；
Guide vane 3, it is contained in spiral case 1 and positioned at the inner side of impeller 2, has multi-disc, the present embodiment there are six, is arc
Shape, each guide vane arrange that the rotation direction of screw arrangement is identical with the rotation direction of impeller 2 relative to the center convolution of impeller 2.Respectively
Gap between the outer ledge and impeller 2 of guide vane is 7mm, and the inlet angle α of guide vane 3 is 90 °, and angle of outlet β is
150°.Each guide vane is fixed on support 5.
Support 5, for support and spacing each guide vane 3, it is the installation pedestal of each guide vane, including is arranged concentrically
First support outer ring 51 and first support inner ring 52, second support outer ring 53 and second support inner ring 54, first support outer ring
51 parallel to the second support outer ring 53；First support outer ring 51 and second support outer ring 53 a diameter of 240mm, first support in
A diameter of 60mm of the support inner ring 53 of circle 52 and second.
First support inner ring 52 is fixed on the first location-plate 56；The first location-plate of output shaft drive connection 56 of motor 4,
So as to drive connection support 5 and guide vane 3.
The both sides of the edge of each guide vane 3 and outer ledge are spacing in the first support support inner ring of inner ring 52, second respectively
54 and second support on outer ring 53, and the inside edge of guide vane 3 externally protrudes out in the first support inner ring 52 and the first support outer ring 51；
Second support outer ring 53 is connected on centring ring 56, and centring ring 56 is connected by screw on the periphery of air inlet 11.This implementation
Example is also associated with connecting rod 55 between corresponding inner ring and outer ring, and the wall of each guide vane 3 is born against to be connected corresponding
On extension bar 55, further to consolidate the positioning of each guide vane 3.
When centrifugal blower works, motor rotates, while drives guide vane and wheel rotation；Guide vane is transported in impeller
Turn, play a part of axial flow blower, external air flow strong pumping is entered into spiral case, and air-flow enters in spiral case first by guide vane
Drive is spun up, and air-flow is thrown in the blade of impeller by the centrifugal force after acceleration, is again speeded up the rotation of air-flow, is effectively improved
Suction effect.
If the centrifugal blower be used in range hood, oil smoke can make oil smoke little particle via guide vane and impeller
Bulky grain is aggregated into after rotary collision, then centrifugal force is thrown on the internal ring wall of spiral case caused by centrifugal blower fan blade wheel, is had
Effect improves oil smoke separating effect.
Embodiment 2
As shown in Figure 5 and Figure 6, the support in the present embodiment is not provided with the first location-plate 56 in embodiment 1, but by
Two support outer rings 53 are connected on the second location-plate 57, and the second location-plate 57 is fixed on the support frame 21 of impeller 2 by buckle 58
On.
The external end edge of each guide vane 3 is zigzag.It can also be waveform configuration.
Remaining content is same as Example 1.
The connection of support and impeller in the present embodiment is more convenient, also, the laciniation of guide vane afterbody, is changed
The position of blade edge tail vortex shedding, increases the distance between center of vorticity, it is suppressed that the position to come off, and then reduce blade
Aerodynamic noise caused by the unsteady pressure and wake's flow field on surface, noise reduction are notable.
Embodiment 3
As shown in Figure 7 and Figure 8, the guide vane 3 in the present embodiment is propeller arrangement, i.e. spiral blade, its spiral
The root width in face is 5mm, and the Breadth Maximum of its end is 30mm.
Support 5 in the present embodiment is rotating shaft, and each guide vane 3 is fixed in rotating shaft, the output shaft drive connection of motor 4
Above-mentioned rotating shaft.
Remaining content is same as Example 1.
The guide vane of multiple helicoid structures can make the rotational domain that spiral case air inlet negative pressure forms 360 °, produce shape
Into tornado effect；Meanwhile oil smoke is when passing through stator, it is necessary to is entered around swirl vane in impeller blade, at this
During, oil smoke can contact with swirl vane and filter out a part of grease, further improve oil smoke separating effect.
Relative to the guide vane in embodiment 1, the guide vane of helicoid reduces more to the actual angle of attack of air-flow,
The actual relative fluid flow angle of fluid is intended to the relative fluid flow angle of guide vane, further reduce the impact to impeller, improve
Flow circumference distributing homogeneity so that the performance such as the air quantity of blower fan, efficiency is improved.
Claims (9)
1. a kind of strong suction multi-wing centrifugal fan, including spiral case (1), the spiral case (1) is provided with air inlet (11) and air outlet
(12), impeller (2) is contained in the spiral case (1), impeller (2) described in motor (4) drive connection, motor (4) the support limit
On wheel hub (6), the wheel hub (6) is connected on the spiral case (1) for position；
It is characterized in that：
At least two panels guide vane (3), each water conservancy diversion are also interval with the inner side of the impeller (2) in the spiral case (1)
Blade arranges that the rotation direction of screw arrangement is identical with the rotation direction of the impeller (2) relative to the center convolution of the impeller (2)；Institute
State motor (4) also each guide vane (3) of drive connection.
2. strong suction multi-wing centrifugal fan according to claim 1, it is characterised in that each guide vane (3) is spiral
Face or globoidal structure, and the external end edge of the guide vane (3) is zigzag or wavy.
3. strong suction multi-wing centrifugal fan according to claim 2, it is characterised in that the entrance of each guide vane (3)
Angle α is 80~100 °, and the angle of outlet β of each guide vane (3) is 140~175 °.
4. strong suction multi-wing centrifugal fan according to claim 3, it is characterised in that the external diameter of each guide vane (3)
It is adapted with the size of the air inlet (11), and the minimum clearance between the guide vane (3) and the impeller (2) is
3~10mm.
5. the strong suction multi-wing centrifugal fan according to Claims 1-4 any claim, it is characterised in that each leaf
Piece (3) is connected on support (5), and the support (5) connects the output shaft of the motor (4).
6. described strong suction multi-wing centrifugal fan according to claim 5, it is characterised in that the support (5) includes same
The first support outer ring (51) and the first support inner ring (52), the second support outer ring (53) and second that the heart is set support inner ring
(54), the first support inner ring (52) is connected on the first location-plate (56), and first location-plate (56) connects the electricity
The output shaft of machine (4)；
The edge of each guide vane (3) is spacing respectively to support outer ring (51), the first support inner ring (52), the described first
In two supports outer ring (53) and the second support inner ring (54).
7. strong suction multi-wing centrifugal fan according to claim 6, it is characterised in that first support outer ring (51)
3~8 times of a diameter of described first support inner ring (52) diameter.
8. described strong suction multi-wing centrifugal fan according to claim 5, it is characterised in that the support (5) includes same
The first support outer ring (51) and the first support inner ring (52), the second support outer ring (53) and second that the heart is set support inner ring
(54), second support outer ring (53) is connected on the second location-plate (57), and second location-plate (57) is connected to described
On the support frame (21) of impeller (2)；
The edge of each guide vane (3) is spacing respectively to support outer ring (51), the first support inner ring (52), the described first
In two supports outer ring (53) and the second support inner ring (54).
9. strong suction multi-wing centrifugal fan according to claim 5, it is characterised in that the support (5) is rotating shaft, each institute
Guide vane (3) is stated to be both connected in the rotating shaft；
Rotating shaft described in the output shaft drive connection of the motor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720370875.XU CN206682045U (en) | 2017-04-11 | 2017-04-11 | A kind of strong suction multi-wing centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720370875.XU CN206682045U (en) | 2017-04-11 | 2017-04-11 | A kind of strong suction multi-wing centrifugal fan |
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| Publication Number | Publication Date |
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| CN206682045U true CN206682045U (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720370875.XU Active CN206682045U (en) | 2017-04-11 | 2017-04-11 | A kind of strong suction multi-wing centrifugal fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339261A (en) * | 2017-04-11 | 2017-11-10 | 宁波方太厨具有限公司 | A kind of strong suction multi-wing centrifugal fan |
-
2017
- 2017-04-11 CN CN201720370875.XU patent/CN206682045U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339261A (en) * | 2017-04-11 | 2017-11-10 | 宁波方太厨具有限公司 | A kind of strong suction multi-wing centrifugal fan |
| CN107339261B (en) * | 2017-04-11 | 2023-09-15 | 宁波方太厨具有限公司 | Strong-suction multi-wing centrifugal fan |
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