CN208252391U - Monotubular twin-stage propeller fan - Google Patents
Monotubular twin-stage propeller fan Download PDFInfo
- Publication number
- CN208252391U CN208252391U CN201820843315.6U CN201820843315U CN208252391U CN 208252391 U CN208252391 U CN 208252391U CN 201820843315 U CN201820843315 U CN 201820843315U CN 208252391 U CN208252391 U CN 208252391U
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- air duct
- guide vane
- stage impeller
- air
- stage
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Abstract
The utility model relates to blower fields, specifically a kind of monotubular twin-stage propeller fan, equipped with cylindric air duct, air duct front end is equipped with air inlet, air duct rear end is equipped with air outlet, motor and impeller are equipped in air duct, electric machine rotational axis line and air duct axis coaxle, the rotary shaft that motor is located at air inlet is equipped with one stage impeller, motor is located at the rotary shaft at air outlet equipped with sencond stage impeller, air duct includes the interior air duct and outer air duct of coaxial line, interior air duct is between one stage impeller and sencond stage impeller, at least three guide vanes are distributed in circular array on interior air duct lateral wall, guide vane is strip, before guide vane, the laminated structure for forming inner wide and outer narrow is shunk at both ends from the inside to the outside respectively afterwards, gradually camber is excessive by air intake to outlet air end for guide vane, form water conservancy diversion concave surface, guide vane inner end is fixedly connected with interior air duct lateral wall, outside guide vane End is fixedly connected with exogenous wind medial wall of the tube, the utility model can requirement under the conditions of big-flow high-pressure power, reduce fan noise.
Description
Technical field
The utility model relates to blower technical field, specifically a kind of monotubular twin-stage propeller fan.
Background technique
Currently, twin-stage blower propeller fan is that two single-stage axial ventilation blowers are connected in series, blower is 2 air ducts, 2
A impeller, 2 motor forms, blower total length are 2 times of simple fan, and blower total length is longer.In use, air-flow
Level-one blower is first passed through using second level blower, air turbulence when not having water conservancy diversion between two Fans be easy to cause second level blower
Low efficiency, effect is small and blower overall noise increases.In order to simplify structure, existing monotubular twin-stage axis circulates wind on the market
Machine, one is equipped with air duct, and air duct is generally cylindric, and air duct front end is equipped with air inlet, and air duct rear end is equipped with air outlet, air duct
In be equipped with motor and impeller, electric machine rotational axis line and air duct axis coaxle, impeller includes one stage impeller and sencond stage impeller, motor position
It is equipped with one stage impeller in the rotary shaft of air inlet, motor is located at the rotary shaft at air outlet equipped with sencond stage impeller.For
For blower, closer to blower outer diameter, the bigger place of diameter, the revolving speed of air-flow is higher, and existing guide vane is generally square plate
Shape structure, the wind that air inlet is come in can be directly impinging on guide vane, and since the biggish local wind speed of blower outer diameter is also larger, wind is clapped
It beats also bigger to the noise generated on guide vane.Since noise performance requirement of the client to blower is higher and higher, too due to noise
Greatly, when client is more demanding to noise performance, monotubular twin-stage propeller fan uses limited.
Summary of the invention
In order to solve deficiency in the prior art, the utility model will provide that a kind of noise is low, compact-sized monotubular twin-stage
Propeller fan.
In order to realize the above functions, the utility model will use following technical scheme:
A kind of monotubular twin-stage propeller fan is equipped with air duct, motor one stage impeller and sencond stage impeller, it is characterised in that air duct
Interior air duct and outer air duct including coaxial line, interior air duct is between one stage impeller and sencond stage impeller, circle on interior air duct lateral wall
All array distributions have at least three guide vanes, and guide vane is strip, and guide vane inner end is fixedly connected with interior air duct lateral wall, guide vane outer end
It is fixedly connected with exogenous wind medial wall of the tube, guide vane front and rear ends shrink the sheet knot for forming inner wide and outer narrow from the inside to the outside respectively
Structure, guide vane form water conservancy diversion concave surface, by the gradually camber transition of air intake to outlet air end to avoid swiftly flowing air-flow is reduced
To the impact of guide vane, avoid the rebound of turbulent flow and air-flow, reduce noise, in addition, guide vane by air intake to outlet air end gradually at
Arc is excessive, forms water conservancy diversion concave surface, and the more conducively circulation of air-flow avoids the rebound of turbulent flow and air-flow, to make air-flow stream
It is logical more smooth.
Guide vane front end face and rear end face described in the utility model are arc-shaped convex surface, and arc-shaped front end face can avoid turbulent flow
And the rebound of air-flow, arc-shaped rear end face can facilitate water conservancy diversion, keep airflow more smooth.
In use, air-flow first passes through the boosting of one stage impeller, then by entering sencond stage impeller after guide vane water conservancy diversion, finally flow
Chimney fan, since guide vane circular array is distributed on interior air duct lateral wall, guide vane front and rear ends are shunk from the inside to the outside respectively
Formed inner wide and outer narrow laminated structure, gradually camber is excessive by air intake to outlet air end for guide vane, formation water conservancy diversion concave surface, due into
Wind pressure at air port, air outlet is larger, and especially closer to blower outer diameter, the revolving speed of air-flow is higher, once wind is directly impinging
On guide vane, noise is very big, and the present invention is then wanted due to using the above structure, meeting the use under the conditions of big-flow high-pressure power
It asks, achievees the effect that reduce fan noise.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the right view of Fig. 1.
Fig. 4 is that the utility model removes the structural schematic diagram after outer air duct.
Structural schematic diagram of the Fig. 5 between level-one wind wheel, second level wind wheel, interior air duct and guide vane.
Fig. 6 is the structural schematic diagram of guide vane.
Fig. 7 is the top view of Fig. 6.
Fig. 8 is the bottom view of Fig. 6.
Fig. 9 is the perspective view of Fig. 6.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing:
A kind of monotubular twin-stage propeller fan, is equipped with cylindric air duct, and air duct front end is equipped with air inlet, air duct rear end
Equipped with air outlet, air duct includes the interior air duct 4 and outer air duct 3 of coaxial line, and outer 3 lateral wall of air duct is equipped with fixing and mounting bracket 10,
Interior air duct is equipped with motor and impeller, electric machine rotational axis line and interior wind between one stage impeller 1 and sencond stage impeller 2 in interior air duct
Cylinder axis coaxle, impeller include one stage impeller and sencond stage impeller, and the rotary shaft that motor is located at air inlet is equipped with one stage impeller,
Motor is located at the rotary shaft at air outlet equipped with sencond stage impeller, and it is wide that 5 width of one stage impeller blade is greater than sencond stage impeller blade 6
Degree, 5 numbers of one stage impeller blade are less than 6 numbers of sencond stage impeller blade, and air inlet one stage impeller blade is wide, quantity is few, can be with
It improves pressure and reduces air inlet noise；Air outlet sencond stage impeller blade is narrow, quantity is more, raising blower pressure, outside interior air duct
At least three guide vanes 7 are distributed in circular array on side wall, and guide vane is strip, guide vane inner end and the fixed company of interior air duct lateral wall
It connects, guide vane outer end is fixedly connected with exogenous wind medial wall of the tube, and guide vane front and rear ends are shunk from the inside to the outside respectively to be formed outside inner width
Narrow laminated structure, gradually camber is excessive by air intake to outlet air end for guide vane, forms water conservancy diversion concave surface 8.Wherein, guide vane front end face
It is arc-shaped convex surface 9 with rear end face, arc-shaped front end face can be to avoid the rebound of turbulent flow and air-flow, and arc-shaped rear end face can be square
Just water conservancy diversion keeps airflow more smooth.
In use, air-flow first passes through the boosting of one stage impeller, then by entering sencond stage impeller after guide vane water conservancy diversion, finally flow
Chimney fan, since guide vane circular array is distributed on interior air duct lateral wall, guide vane front and rear ends are shunk from the inside to the outside respectively
Formed inner wide and outer narrow laminated structure, gradually camber is excessive by air intake to outlet air end for guide vane, formation water conservancy diversion concave surface, due into
Wind pressure at air port, air outlet is larger, and especially closer to blower outer diameter, the revolving speed of air-flow is higher, once wind is directly impinging
On guide vane, noise is very big, and inner wide and outer narrow of the present invention then can to avoid reduce impact of the swiftly flowing air-flow to guide vane,
The rebound of turbulent flow and air-flow is avoided, noise is reduced, gradually camber is excessive in addition, guide vane is by air intake to outlet air end, is formed
Water conservancy diversion concave surface, the more conducively circulation of air-flow avoid the rebound of turbulent flow and air-flow, to keep airflow more smooth.Due to
Using the above structure, the utility model meets the requirement under the conditions of big-flow high-pressure power, and reaching reduces fan noise
Effect.
Claims (3)
1. a kind of monotubular twin-stage propeller fan is equipped with air duct, motor one stage impeller and sencond stage impeller, it is characterised in that air duct packet
The interior air duct and outer air duct of coaxial line are included, interior air duct is between one stage impeller and sencond stage impeller, circumference on interior air duct lateral wall
Array distribution has at least three guide vanes, and guide vane is strip, and guide vane inner end is fixedly connected with interior air duct lateral wall, guide vane outer end with
Exogenous wind medial wall of the tube is fixedly connected, and guide vane front and rear ends shrink the laminated structure for forming inner wide and outer narrow from the inside to the outside respectively,
Guide vane forms water conservancy diversion concave surface by the gradually camber transition of air intake to outlet air end.
2. a kind of monotubular twin-stage propeller fan according to claim 1, it is characterised in that guide vane front end face and rear end face
It is arc-shaped convex surface.
3. a kind of monotubular twin-stage propeller fan according to claim 1, it is characterised in that one stage impeller width of blade is big
In sencond stage impeller width of blade, one stage impeller blade number is less than sencond stage impeller blade number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820843315.6U CN208252391U (en) | 2018-06-01 | 2018-06-01 | Monotubular twin-stage propeller fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820843315.6U CN208252391U (en) | 2018-06-01 | 2018-06-01 | Monotubular twin-stage propeller fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208252391U true CN208252391U (en) | 2018-12-18 |
Family
ID=64652140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820843315.6U Expired - Fee Related CN208252391U (en) | 2018-06-01 | 2018-06-01 | Monotubular twin-stage propeller fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208252391U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112590308A (en) * | 2020-12-24 | 2021-04-02 | 马立克 | A cut capper for fluid packaging bag |
-
2018
- 2018-06-01 CN CN201820843315.6U patent/CN208252391U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112590308A (en) * | 2020-12-24 | 2021-04-02 | 马立克 | A cut capper for fluid packaging bag |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181218 Termination date: 20200601 |