CN206530542U - A kind of double turbine centrifugal volute of blower used for range hood - Google Patents
A kind of double turbine centrifugal volute of blower used for range hood Download PDFInfo
- Publication number
- CN206530542U CN206530542U CN201621200726.0U CN201621200726U CN206530542U CN 206530542 U CN206530542 U CN 206530542U CN 201621200726 U CN201621200726 U CN 201621200726U CN 206530542 U CN206530542 U CN 206530542U
- Authority
- CN
- China
- Prior art keywords
- spiral case
- coaming plate
- straight line
- bottom plate
- right sides
- Prior art date
- 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.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model is related to double turbine centrifugal blower fan technical fields, and in particular to a kind of double turbine centrifugal volute of blower used for range hood, and it includes spiral case panel, spiral case bottom plate, left coaming plate and right coaming plate；The left and right sides is correspondingly arranged on fresh air inlet on the spiral case panel；The left and right sides is correspondingly arranged on motor fixing hole on the spiral case bottom plate；The center of circle of the fresh air inlet of the left and right sides of the spiral case panel spiral case bottom plate projection in the plane, overlapped with the motor fixing hole center of circle of the spiral case bottom plate left and right sides；The edge contour of the right coaming plate is formed by connecting by the straight line AB of rounding off successively, helical curve BC, circular arc line CD and straight line DE；It uses constant speed runner design in volute outlet section, and optimize the ratio of volute outlet width and maximum opening width, volute outlet section runner and outlet housing runner is seamlessly transitted very much, it is to avoid eddy current loss caused by wide-angle diffusion and contraction, air quantity and reduction noise can be greatly promoted.
Description
Technical field
The utility model is related to double turbine centrifugal blower fan technical fields, and in particular to a kind of double turbines used for range hood from
Heart volute of blower.
Background technology
With social development, people adsorb oil smoke in culinary art using oil extracting machine.And with bilobed wheel, bi-motor
And motor, impeller it is symmetrical arrangement, only a conjoint outlet double turbofans it is more and more wider in the application of range hood
General, on the one hand its outstanding advantages is that suction is big, and bi-motor is with more than 1.5 times that air quantity when opening is single motor；On the other hand it is
Left and right motor can be controlled individually.Play the effect saved during unilateral cooking.
Current double turbofans on the market, as shown in Figure 1, including left wind wheel 1a, right wind wheel 2a, left spiral case 3a, the right side
Spiral case 4a and outlet housing 5a, the air outlet of left and right spiral case is connected with outlet housing entrance 6a, and outlet housing has single outlet 7a, left
Outlet 8a, 9a of right spiral case use traditional diffusion form, and θ ＞ 0, and maximum of the exit width much larger than spiral case of spiral case
Aperture, i.e. H/H1 ＞ 1.5, but because outlet housing exports smaller, cause outlet housing to produce larger angle of throat to outlet by import
α, so as to cause the runner between being exported from volute outlet Section A-A to outlet housing in the gesture for first expanding after-contraction, such side
Face can cause the portion of runner content to be also easy to produce vortex, on the other hand can cause easily to produce backflow and vortex at snail tongue again, from
And cause air quantity to reduce, noise increase.
The content of the invention
The purpose of this utility model is that defect and deficiency for prior art, there is provided one kind is simple in construction, is designed and closed
Reason, a kind of double turbine centrifugal volute of blower used for range hood easy to use, it is set in volute outlet section using constant speed runner
Meter, and optimize the ratio of volute outlet width and maximum opening width, make volute outlet section runner and outlet housing runner will be very flat
Slip over and cross, it is to avoid eddy current loss caused by wide-angle diffusion and contraction, air quantity and reduction noise can be greatly promoted.
A kind of double turbine centrifugal volute of blower used for range hood described in the utility model, it includes spiral case panel, snail
Shell bottom plate, left coaming plate and right coaming plate；The left and right sides is correspondingly arranged on fresh air inlet on the spiral case panel；It is left on the spiral case bottom plate
Right both sides are correspondingly arranged on motor fixing hole；The center of circle of the fresh air inlet of the left and right sides of the spiral case panel is where spiral case bottom plate
Projection in plane, is overlapped with the motor fixing hole center of circle of the spiral case bottom plate left and right sides；The edge contour of the right coaming plate by according to
Straight line AB, helical curve BC, circular arc line CD and the straight line DE of secondary rounding off are formed by connecting, and straight line AB and volute outlet
Section AE is vertical, and straight line AB and helical curve BC is tangential on B points, and helical curve BC and circular arc line CD is tangential on CD points, circular arc line CD
D points are tangential on straight line DE, wherein helical curve BC is to be connected to form by single hop, two sections or multistage smooth curve rounding off；
Straight line DE in the edge contour of the right coaming plate is vertical with volute outlet section AE；The left coaming plate and right coaming plate are in
Symmetrical distribution.
Further, the length of the volute outlet section AE is L, helical curve BC maximum opening width (i.e. B points and impeller
Cylindrical distance) it is L1,1.2≤L/L1≤1.5.
After said structure, the utility model has the beneficial effect that：It is described in the utility model a kind of used for range hood
Double turbine centrifugal volute of blower, it uses constant speed runner design in volute outlet section, and optimizes volute outlet width and maximum
The ratio of aperture, makes volute outlet section runner and outlet housing runner to seamlessly transit very much, it is to avoid wide-angle diffusion and contraction are drawn
The eddy current loss risen, can greatly promote air quantity and reduction noise.
【Brief description of the drawings】
Accompanying drawing described herein is to be further understood for providing to of the present utility model, constitutes one of the application
Point, but do not constitute to it is of the present utility model it is improper limit, in the accompanying drawings：
Fig. 1 is the structural representation of the double turbofans of tradition in background technology；
The structural representation of the double turbofan spiral cases of Fig. 2 the utility model；
The structural representation at the double another visual angles of turbofan spiral case of Fig. 3 the utility model；
Fig. 4 is the spiral case coaming plate of the double turbofan spiral cases of the utility model from the view in terms of spiral case panel normal orientation.
Description of reference numerals：
1st, spiral case panel；11st, fresh air inlet；2nd, spiral case bottom plate；21st, motor fixing hole；3rd, left coaming plate；4th, right coaming plate.
【Embodiment】
Describe the utility model in detail below in conjunction with accompanying drawing and specific embodiment, illustrative examples therein with
And illustrate only to be used for explaining the utility model, but be not intended as limiting of the present utility model.
As shown in figs 2-4, a kind of double turbine centrifugal volute of blower used for range hood described in present embodiment,
It includes spiral case panel 1, spiral case bottom plate 2, left coaming plate 3 and right coaming plate 4；
The left and right sides is correspondingly arranged on fresh air inlet 11 on the spiral case panel 1；Left and right sides correspondence on the spiral case bottom plate 2
It is provided with motor fixing hole 21；The center of circle of the fresh air inlet 11 of the left and right sides of the spiral case panel 1 plane where spiral case bottom plate
On projection, overlapped with the center of circle of motor fixing hole 21 of the left and right sides of spiral case bottom plate 2；The edge contour of the right coaming plate 4 by according to
Straight line AB, helical curve BC, circular arc line CD and the straight line DE of secondary rounding off are formed by connecting, and straight line AB and volute outlet
Section AE is vertical, and straight line AB and helical curve BC is tangential on B points, and helical curve BC and circular arc line CD is tangential on CD points, circular arc line CD
D points are tangential on straight line DE, wherein helical curve BC is to be connected to form by single hop, two sections or multistage smooth curve rounding off；
Straight line DE in the edge contour of the right coaming plate 4 is vertical with volute outlet section AE；The left coaming plate 3 and right coaming plate
4 symmetrical distributions.
As one kind of the present utility model preferably, the length of the volute outlet section AE is L, helical curve BC maximum
Aperture (i.e. B points and the cylindrical distance of impeller) is L1,1.2≤L/L1≤1.5.
In the utility model, the straight line DE in the edge contour of right coaming plate 4 is vertical with volute outlet section AE, and such spiral case goes out
Mouth section runner is constant speed runner, so as to avoid the flow losses that runner interior air-flow first expands produced by retraction.
In the utility model, volute outlet section AE length is L, helical curve BC maximum opening width (i.e. B points and impeller
Cylindrical distance) it is L1.Preferably, 1.2≤L/L1≤1.5, the embodiment selects the such outlet housing in L/L1=1.328 by entering
Mouth will be greatly reduced to the angle of throat α of outlet, and the flow losses in outlet housing will be substantially reduced.
In the utility model, left coaming plate 3 and the symmetrical distribution of right coaming plate 4.
In the utility model, spiral case panel 1 is connected with left coaming plate 3 and right coaming plate 4 by butt-joint, and spiral case bottom plate 2 encloses with a left side
Plate 3 and right coaming plate 4 are connected by butt-joint.
A kind of double turbine centrifugal volute of blower used for range hood described in the utility model, used in volute outlet section etc.
Fast runner design, and optimize the ratio of volute outlet width and maximum opening width, make volute outlet section runner and outlet housing runner
It will seamlessly transit very much, it is to avoid eddy current loss caused by wide-angle diffusion and contraction, air quantity and reduction noise can be greatly promoted.
Described above is only better embodiment of the present utility model, therefore all according to described in the utility model patent claim
The equivalent change or modification done of construction, feature and principle, be included in the utility model patent claim.
Claims (2)
1. a kind of double turbine centrifugal volute of blower used for range hood, it includes spiral case panel（1）, spiral case bottom plate（2）, left coaming plate
（3）And right coaming plate（4）；The spiral case panel（1）The upper left and right sides is correspondingly arranged on fresh air inlet（11）；The spiral case bottom plate（2）
The upper left and right sides is correspondingly arranged on motor fixing hole（21）；The spiral case panel（1）The left and right sides fresh air inlet（11）Circle
The heart spiral case bottom plate projection in the plane, with spiral case bottom plate（2）The motor fixing hole of the left and right sides（21）The center of circle is overlapped；Institute
State right coaming plate（4）Edge contour by the straight line AB of rounding off successively, helical curve BC, circular arc line CD and straight line DE connections
Form, and straight line AB is vertical with volute outlet section AE, and straight line AB and helical curve BC is tangential on B points, helical curve BC and circle
Camber line CD is tangential on CD points, and circular arc line CD and straight line DE is tangential on D points, and wherein helical curve BC is by single hop, two sections or multistage
Smooth curve rounding off, which is connected, to be formed；It is characterized in that：The right coaming plate（4）Edge contour in straight line DE go out with spiral case
Mouth section AE is vertical；The left coaming plate（3）And right coaming plate（4）Symmetrical distribution.
2. a kind of double turbine centrifugal volute of blower used for range hood according to claim 1, it is characterised in that：The snail
Shell outlet section AE length is L, and helical curve BC maximum opening width is L1, and L1 is B points and the cylindrical distance of impeller, 1.2≤
L/L1≤1.5。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621200726.0U CN206530542U (en) | 2016-11-08 | 2016-11-08 | A kind of double turbine centrifugal volute of blower used for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621200726.0U CN206530542U (en) | 2016-11-08 | 2016-11-08 | A kind of double turbine centrifugal volute of blower used for range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206530542U true CN206530542U (en) | 2017-09-29 |
Family
ID=59921567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621200726.0U Active CN206530542U (en) | 2016-11-08 | 2016-11-08 | A kind of double turbine centrifugal volute of blower used for range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206530542U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457881A (en) * | 2018-03-30 | 2018-08-28 | 浙江宣和电器有限公司 | Smoke eliminator and its double turbofans |
| CN108458439A (en) * | 2018-03-30 | 2018-08-28 | 浙江宣和电器有限公司 | Ceiling mounting type smoke eliminator mounting structure |
| CN113007116A (en) * | 2021-04-22 | 2021-06-22 | 景德镇陶瓷大学 | Fan for ceramic manufacturing process and ventilation system thereof |
-
2016
- 2016-11-08 CN CN201621200726.0U patent/CN206530542U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457881A (en) * | 2018-03-30 | 2018-08-28 | 浙江宣和电器有限公司 | Smoke eliminator and its double turbofans |
| CN108458439A (en) * | 2018-03-30 | 2018-08-28 | 浙江宣和电器有限公司 | Ceiling mounting type smoke eliminator mounting structure |
| CN113007116A (en) * | 2021-04-22 | 2021-06-22 | 景德镇陶瓷大学 | Fan for ceramic manufacturing process and ventilation system thereof |
| CN113007116B (en) * | 2021-04-22 | 2022-07-08 | 景德镇陶瓷大学 | Fan for ceramic manufacturing process and ventilation system thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204646777U (en) | Radial flow impeller and fan unit | |
| CN102182707B (en) | Centrifugal fan for oil and smoke exhaust machine and method for manufacturing volute profile line thereof | |
| CN105508265B (en) | A kind of novel multi-wing centrifugal fan | |
| CN206530542U (en) | A kind of double turbine centrifugal volute of blower used for range hood | |
| CN107503958A (en) | A kind of centrifugal blower fan system for range hood | |
| CN202789746U (en) | Guide ring and air conditioner with same | |
| CN110529410A (en) | A kind of flow-mixing blower fan | |
| CN104005996A (en) | Volute, centrifugal fan volute and range hood | |
| CN108317564A (en) | Fume extractor | |
| CN110374925A (en) | A kind of bilayer collector and the flow-mixing blower fan for assembling the double-deck collector | |
| CN207920915U (en) | Spiral case, wind turbine and gas heater | |
| CN207647842U (en) | A kind of volute structure of centrifugal blower | |
| CN207513872U (en) | A kind of centrifugal blower fan system | |
| CN204476871U (en) | A kind of centrifugal blower slip ring adding anti-vortex ring | |
| CN105756981A (en) | Noise reduction fan wall for shell-free centrifugal fan | |
| CN207975709U (en) | Fume extractor | |
| CN102588349B (en) | Axial flow fan for exhausting air and dust in pipeline | |
| CN202597263U (en) | Large-flow single-shaft constant-temperature air-compressor spiral casing structure | |
| CN205714857U (en) | A kind of antecurvature multiple wing type centrifugal blower fan | |
| CN206845544U (en) | A kind of centrifugal blower volute | |
| CN201232661Y (en) | Mixed-flow spherical blower fan | |
| CN205909373U (en) | Can enlarge hot blast blowpipe apparatus of air inlet scope | |
| CN214619731U (en) | Smoke machine flue flow guide structure, check valve and volute tongue structure | |
| CN204421301U (en) | Air duct structure and air conditioner | |
| CN203297148U (en) | Through-flow fan for air conditioner capable of effectively improving fan performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |