CN209687800U - Volute panel, volute, centrifugal fan and range hood - Google Patents
Volute panel, volute, centrifugal fan and range hood Download PDFInfo
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- CN209687800U CN209687800U CN201821664496.2U CN201821664496U CN209687800U CN 209687800 U CN209687800 U CN 209687800U CN 201821664496 U CN201821664496 U CN 201821664496U CN 209687800 U CN209687800 U CN 209687800U
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- 230000005611 electricity Effects 0.000 description 2
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Abstract
The utility model discloses a volute panel, the projection line of the edge contour line on the plane is formed by connecting a straight line AB, a spiral curve BC, an arc line CD and a straight line DE which are in smooth transition in sequence, moreover, the straight line AB and the spiral curve BC are tangent to a point B, the spiral curve BC and the arc line CD are tangent to a point C, and the arc line CD and the straight line DE are tangent to a point D; the utility model also discloses a spiral case, centrifugal fan and range hood. The utility model discloses a carry out optimal design to the spiral case molded lines, make the air flow in wind wheel border export air current and the spiral case more even, also improved amount of wind and wind pressure simultaneously greatly, reduce the vortex noise.
Description
Technical field
The utility model belongs to centrifugal blower technical field, and in particular to a kind of spiral case panel, spiral case, centrifugal blower and suction
Kitchen ventilator.
Background technique
Range hood is one of essential machine for kitchen use equipment of family.Currently, top smoking machine with cabinet due to arranging in pairs or groups
Beautiful advantage is popular among consumers.But top smoking machine makes up suction not due to farther out, needing biggish wind-force from pot
Foot；Wind-force generally all improves by increasing the size of spiral case in industry major part manufacturer, not only cost of idleness, but also leads to smoke machine case
Body bulky dimensions and unsightly.
Utility model content
In view of this, being solved the main purpose of the utility model is to provide a kind of spiral case panel, spiral case and centrifugal blower
Spiral case size is big in the prior art, the air flowing in impeller border exit flow and spiral case is uneven, air quantity is small and whirlpool
Flow the big problem of noise.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that a kind of spiral case panel, edge wheel
The projection line of profile plane where it is by the straight line AB of successively rounding off, helical curve BC, circular arc line CD and straight line DE
It is formed by connecting, also, straight line AB and helical curve BC are tangential on B point, helical curve BC and circular arc line CD are tangential on C point, circular arc
Line CD and straight line DE are tangential on D point, and helical curve BC is to be formed by spline curve by 21 rounding ofves in below table
Either obtained by the spline curve scaled down or amplification:
21 points in the table are using the center of circle of the air inlet on spiral case panel as coordinate origin, and X-coordinate axle is cross
To Y-coordinate axle is longitudinal, and X-axis positive axis rotates clockwise the central angle to be formed around coordinate origin and is denoted as positive-angle, and X-axis is just
Semiaxis rotates counterclockwise the central angle to be formed around coordinate origin and is denoted as negative angle formation.
Another technical solution of the utility model is achieved in that a kind of spiral case comprising above-mentioned spiral case panel,
Spiral case bottom plate, spiral case coaming plate, volute flange are provided with air inlet on the spiral case panel, are provided with electricity on the spiral case bottom plate
Machine fixation hole, the center of circle of the air inlet on the spiral case panel spiral case bottom plate projection in the plane and motor fixing hole circle
The heart is overlapped.
Preferably, the edge wheel profile of the spiral case bottom plate and the edge wheel profile of spiral case panel are put down where spiral case panel
The projection line in face is overlapped.
Preferably, circular arc line CD of the edge wheel profile of the spiral case panel in the projection line of plane where spiral case panel
Radius is R, 10≤R≤20.
Preferably, the edge wheel profile of the spiral case panel is in the straight line AB of the projection line of plane where spiral case panel and straight
The angle of line DE is θ, 10 °≤θ≤15 °.
The third technical solution of the utility model is achieved in that a kind of centrifugal blower comprising above-mentioned spiral case,
Wind wheel, air inlet ring, motor, the wind wheel are arranged in the spiral case, and the end face of wind wheel, the motor is arranged in the air inlet ring
Drive wind wheel rotation.
The 4th kind of technical solution of the utility model is achieved in that a kind of range hood comprising above-mentioned centrifugation
Blower, range hood ontology, the centrifugal blower are arranged in range hood ontology.
Compared with prior art, the utility model makes wind wheel border work off one's feeling vent one's spleen by optimizing to spiral case inlet pressure
Air flowing in stream and spiral case is more uniform, while also substantially increasing air quantity and wind pressure, reduces vortex noise.
Detailed description of the invention
Fig. 1 is a kind of edge wheel profile of spiral case panel provided by the embodiment of the utility model in plane where spiral case panel
Projection line schematic diagram；
Fig. 2 is a kind of structural schematic diagram of spiral case provided by the embodiment of the utility model；
Fig. 3 is the structural schematic diagram of motor fixing hole in a kind of spiral case provided by the embodiment of the utility model；
Fig. 4 is a kind of cross-sectional view of the spiral case provided by the embodiment of the utility model along the direction H-H.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
A kind of spiral case panel provided by the embodiment of the utility model, the projection line of edge wheel profile plane where it by
Successively the straight line AB of rounding off, helical curve BC, circular arc line CD and straight line DE are formed by connecting, also, straight line AB and spiral
Curve BC is tangential on B point, and helical curve BC and circular arc line CD are tangential on C point, and circular arc line CD and straight line DE are tangential on D point, spiral
Curve BC is to be formed by spline curve by 21 rounding ofves in below table either to be contracted by the spline curve equal proportion
What small or amplification obtained:
21 points in above table are using the center of circle of the air inlet on spiral case panel as coordinate origin, and X-coordinate axle is cross
To Y-coordinate axle is longitudinal, and X-axis positive axis rotates clockwise the central angle to be formed around coordinate origin and is denoted as positive-angle, and X-axis is just
Semiaxis rotates counterclockwise the central angle to be formed around coordinate origin and is denoted as negative angle formation.
The utility model embodiment additionally provides a kind of spiral case comprising above-mentioned spiral case panel 1, spiral case bottom plate 2, spiral case
Coaming plate 3, volute flange 4 are provided with air inlet 11 on spiral case panel 1, motor fixing hole 21, spiral case are provided on spiral case bottom plate 2
The center of circle of air inlet 11 on panel 1 spiral case bottom plate 2 projection in the plane be overlapped with 21 center of circle of motor fixing hole.
Further, the edge wheel profile of the edge wheel profile of spiral case bottom plate 2 and spiral case panel 2 is where spiral case panel 1
The projection line of plane is overlapped.
Further, circular arc line CD of the edge wheel profile of spiral case panel 1 in the projection line of 1 place plane of spiral case panel
Radius is R, 10≤R≤20.
Further, the edge wheel profile of spiral case panel 1 is in the straight line AB of the projection line of 1 place plane of spiral case panel and straight
The angle of line DE is θ, 10 °≤θ≤15 °.
The utility model embodiment additionally provides a kind of centrifugal blower comprising above-mentioned spiral case, wind wheel, air inlet ring, electricity
Machine, the wind wheel are arranged in the spiral case, and the end face of wind wheel, the rotation of motor driven wind wheel is arranged in air inlet ring.
The utility model embodiment additionally provides a kind of range hood comprising above-mentioned centrifugal blower, range hood sheet
Body, centrifugal blower are arranged in range hood ontology.
The utility model is optimized by the molded line to spiral case panel, is made in 2 border exit flow of wind wheel and spiral case 1
Air flowing is more uniform, while also greatly improving air quantity and wind pressure, reduces vortex noise；By experiment, using the present embodiment
Small size centrifugal blower, overall performance is excellent, and surveys air quantity 17m3/ min surveys sound pressure level noise 56.5dB, is worth
It vigorously promotes the use.
The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model
Range.
Claims (7)
1. a kind of spiral case panel, which is characterized in that the projection line of its edge wheel profile plane where it is by successively rounding off
Straight line AB, helical curve BC, circular arc line CD and straight line DE be formed by connecting, also, straight line AB and helical curve BC are tangential on B
Point, helical curve BC and circular arc line CD are tangential on C point, and circular arc line CD and straight line DE are tangential on D point, and helical curve BC is by following
21 rounding ofves are formed by what spline curve was either obtained by the spline curve scaled down or amplification in table:
21 points in the table are using the center of circle of the air inlet on spiral case panel as coordinate origin, and X-coordinate axle is laterally Y
Reference axis is longitudinal, and X-axis positive axis rotates clockwise the central angle to be formed around coordinate origin and is denoted as positive-angle, X-axis positive axis
The central angle to be formed is rotated counterclockwise around coordinate origin is denoted as negative angle formation.
2. a kind of spiral case, which is characterized in that it includes spiral case panel (1) as described in claim 1, spiral case bottom plate (2), spiral case
Coaming plate (3), volute flange (4) are provided with air inlet (11) on the spiral case panel (1), are provided on the spiral case bottom plate (2)
Motor fixing hole (21), the center of circle of the air inlet (11) on the spiral case panel (1) spiral case bottom plate (2) throwing in the plane
Shadow is overlapped with motor fixing hole (21) center of circle.
3. a kind of spiral case according to claim 2, which is characterized in that the edge wheel profile and spiral case of the spiral case bottom plate (2)
The edge wheel profile of panel (1) is overlapped in the projection line of plane where spiral case panel (1).
4. a kind of spiral case according to claim 3, which is characterized in that the edge wheel profile of the spiral case panel (1) is in spiral case
The radius of the circular arc line CD of the projection line of plane where panel (1) is R, 10≤R≤20.
5. according to a kind of spiral case described in claim 2-4 any one, which is characterized in that the edge wheel of the spiral case panel (1)
Profile angle of the straight line AB and straight line DE of the projection line of plane where the spiral case panel (1) is θ, 10 °≤θ≤15 °.
6. a kind of centrifugal blower, which is characterized in that it includes spiral case, the wind wheel, air inlet as described in claim 2-5 any one
Circle, motor, the wind wheel are arranged in the spiral case, and the end face of wind wheel, the motor driven wind wheel is arranged in the air inlet ring
Rotation.
7. a kind of range hood, which is characterized in that it includes centrifugal blower as claimed in claim 6, range hood ontology, institute
Centrifugal blower is stated to be arranged in range hood ontology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821664496.2U CN209687800U (en) | 2018-10-15 | 2018-10-15 | Volute panel, volute, centrifugal fan and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821664496.2U CN209687800U (en) | 2018-10-15 | 2018-10-15 | Volute panel, volute, centrifugal fan and range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209687800U true CN209687800U (en) | 2019-11-26 |
Family
ID=68594027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821664496.2U Active CN209687800U (en) | 2018-10-15 | 2018-10-15 | Volute panel, volute, centrifugal fan and range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209687800U (en) |
-
2018
- 2018-10-15 CN CN201821664496.2U patent/CN209687800U/en active Active
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