CN219691780U - Annular axial flow impeller - Google Patents
Annular axial flow impeller Download PDFInfo
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- CN219691780U CN219691780U CN202222864306.4U CN202222864306U CN219691780U CN 219691780 U CN219691780 U CN 219691780U CN 202222864306 U CN202222864306 U CN 202222864306U CN 219691780 U CN219691780 U CN 219691780U
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Abstract
The utility model provides an annular axial flow impeller, comprising: the radial fan blade assembly is connected with the surrounding wind wall through a plurality of axial fan blades which are distributed in a circumferential array by taking the center of the central hub as the center of a circle. The annular axial flow impeller is simple in structure and reasonable in design, and through the design of the integral structure of the impeller, the radial fan blades provide high-pressure air flow for the axial fan blades, so that the axial fan blades can blow out larger air quantity and higher air speed, and the noise is low.
Description
Technical Field
The utility model relates to an axial flow impeller, in particular to an annular axial flow impeller.
Background
The axial flow fan is a widely applied component in the ventilation industry, and comprises an axial flow wind wheel, wherein the axial flow wind wheel comprises an impeller and a wind guide ring sleeved outside the impeller, and in general, an air inlet end and an air outlet end of the axial flow wind wheel are respectively provided with a front guide vane and a rear guide vane, and the front guide vane and the rear guide vane play a certain role in guiding and rectifying gas flow, so that the efficiency of the fan is improved; however, at present, due to the limitation of the size, the front guide vane and the rear guide vane cannot be respectively arranged at the air inlet end and the air outlet end of the axial flow wind wheel, so that the efficiency of the axial flow fan is low. Therefore, the design of the bladeless fan exists, but the existing bladeless fan requires a motor with ultra-high rotation speed, so that large high-frequency noise is introduced, the cost is high, and the difficulty is brought to the popularization of products.
In the prior art, chinese patent publication No. CN203685682U discloses a novel axial flow wind wheel, which comprises a hub and at least two blades, wherein the blades are uniformly distributed on the periphery of the hub, and a balancing piece is arranged on the hub. The balancing piece of the axial flow wind wheel is arranged on the hub, so that the noise of the fan is reduced, the balancing piece is firm and not easy to drop, and the dynamic balance of the fan blade is good. However, the axial flow wind wheel cannot adjust axial and radial air flow, cannot blow out larger air quantity and higher wind speed, and still has larger wind noise, so improvement is needed.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the annular axial flow impeller, and the design of the integral structure of the impeller ensures that the radial fan blades provide high-pressure air flow for the axial fan blades, so that the axial fan blades can blow out larger air quantity and higher air speed.
In order to achieve the above technical solution, the present utility model provides an annular axial flow impeller, including: the radial fan blade assembly is connected with the surrounding wind wall through a plurality of axial fan blades which are distributed in a circumferential array by taking the center of the central hub as the center of a circle.
In the technical scheme, during actual installation, the axial hole on the impeller shaft can be in butt joint with the output shaft of the motor, during actual operation, when the motor drives the annular axial flow impeller to rotate, a radial wind gathering area is formed between the connecting rib group and the radial fan blade assembly, wind in the radial wind gathering area can be enabled to flow to the axial fan area formed by the axial fan blades and the surrounding wind wall to be dispersed outwards in the rotating process, the surrounding wind wall can effectively turn radial wind flow to the axial direction, wind in the radial wind gathering area and wind in the axial fan area can be effectively overlapped through the axial fan area, high-pressure air flow is provided, and the axial fan area can blow out the effect of larger wind quantity and higher wind speed.
Preferably, the radial fan blade assembly comprises a plurality of radial fan blades which are distributed in a circumferential array by taking the center of the center hub as the center of the circle, and annular frameworks which are arranged at the front end and the rear end of the plurality of radial fan blades which are distributed in a circumferential array by taking the center of the center hub as the center of the circle, and the outer wall of the center hub is connected with the annular frameworks through the connecting rib groups so as to ensure firm connection between the center hub and the radial fan blade assembly.
Preferably, the connection rib group comprises a plurality of connection ribs which are distributed in a vortex shape, the inner ends of the connection ribs are connected with the outer wall of the central hub, the outer ends of the connection ribs are connected with the annular framework, firm connection between the central hub and the annular framework is ensured, and wind in a central area can be dispersed outwards in a vortex shape under the action of centrifugal force, so that radial wind flow is formed.
Preferably, the radial direction of radial fan blade all sets up to the arc of buckling to same direction, and radial fan blade direction of buckling is unanimous with the direction that is the connecting rib of vortex distribution and buckle, through above-mentioned structural design for the connecting rib group that is vortex distribution is unanimous with the direction of buckling of radial fan blade of arc, in actual rotatory in-process, can make the wind pressure of radial formed wind flow further increase, in order to obtain higher wind pressure, and noise when can effectively reducing the rotation.
Preferably, the axial fan blades are all inclined towards the same direction, and an air duct is reserved between every two adjacent axial fan blades so as to achieve good axial air guiding effect.
Preferably, the wind surrounding wall is higher than the axial fan blades on the wind outlet end face, and the height between the wind surrounding wall and the axial fan bladesThe difference in degree is H 1 ，0.1mm≤H 1 The effect of the wind surrounding wall is less than or equal to 1mm, so that radial wind flow is blocked, and axial wind flow is formed by turning the radial wind flow, therefore, the wind surrounding wall on the wind outlet end face is higher than the axial fan blades, a better blocking effect is achieved, and better formation of the axial wind flow is ensured.
Preferably, the axial fan blade is higher than the radial fan blade on the air outlet end face, and the height difference between the axial fan blade and the radial fan blade is H 2 ，0.1mm≤H 2 The axial fan blades on the air outlet end face are higher than the radial fan blades in structural design, so that a better air guiding effect can be achieved, and radial air flow is ensured to be output outwards along an axial air channel formed between adjacent axial fan blades.
Preferably, an angle alpha, -10 degrees < alpha <65 degrees is arranged between the plane of the air outlet end face and the air surrounding wall, wherein the larger alpha is, the larger the expansion angle gamma of the air outlet area is.
Preferably, an included angle beta is formed between the plane of the air outlet end face and the axial direction of the radial fan blade, beta is larger than or equal to 60 degrees and smaller than or equal to 90 degrees, the design of beta is related to the noise during actual rotation, and in actual work, the noise is larger when the beta is smaller than 60 degrees and smaller than or equal to 90 degrees when the axial flow impeller rotates, and the noise is small when the axial flow impeller rotates.
Preferably, the wind surrounding wall can be a whole circle taking the center of the impeller axle center as the center of the circle, or can be a plurality of sections of circular arcs taking the center of the impeller axle center as the center of the circle, and the wind surrounding wall has the function of blocking radial wind flow, so that the radial wind flow is turned to form axial wind flow, and the wind surrounding wall can be selected according to the requirements of customers in actual production.
The annular axial flow impeller provided by the utility model has the beneficial effects that: the annular axial flow impeller is simple in structure and reasonable in design, and through the design of the integral structure of the impeller, the radial fan blades provide high-pressure air flow for the axial fan blades, so that the axial fan blades can blow out larger air quantity and higher air speed. During practical installation, the axial hole on the impeller shaft can be in butt joint with the output shaft of the motor, during practical operation, when the motor drives the annular axial flow impeller to rotate, a radial wind gathering area is formed between the connecting rib group and the radial fan blade assembly, wind flow in the radial wind gathering area can be enabled to diffuse outwards to the axial fan area formed by the axial fan blades and the surrounding wind wall in the rotating process, the surrounding wind wall can effectively turn radial wind flow to the axial direction, wind in the radial wind gathering area and wind in the axial fan area can be effectively overlapped through the axial fan area, high-pressure air flow is provided, and the axial fan area can blow out larger wind quantity and higher wind speed.
Drawings
Fig. 1 is a front view of a three-dimensional structure of the present utility model.
Fig. 2 is a rear view of the three-dimensional structure of the present utility model.
Fig. 3 is a rear view of the present utility model.
Fig. 4 is a radial cross-sectional view of the present utility model.
Fig. 5 is a cross-sectional view of the A-A plane of fig. 4.
Fig. 6 is a partially enlarged schematic view of the structure of fig. 5.
In the figure: 1. an impeller axis; 2. a central hub; 3. a connection rib group; 4. radial fan blades; 5. an annular skeleton; 6. an axial fan blade; 7. and a wind surrounding wall.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model.
Example 1: an annular axial flow impeller.
Referring to fig. 1 to 6, an annular axial flow impeller includes: the motor comprises a central hub 2, a radial fan blade assembly and a wind surrounding wall 7, wherein the center of the central hub 2 is provided with an impeller shaft center 1, the center of the impeller shaft center 1 is provided with a central hole, and the impeller shaft center 1 can be in butt joint with an output shaft of the motor through the shaft center hole on the impeller shaft center 1 when in actual installation;
the center hub 2 is connected with the radial fan blade assembly through the connecting rib group 3, the radial fan blade assembly comprises a plurality of radial fan blades 4 which are distributed in a circumferential array by taking the center of the center hub 2 as the center of the circle, and annular frameworks 5 which are arranged at the front end and the rear end of the plurality of radial fan blades 4 which are distributed in a circumferential array by taking the center of the center hub as the center of the circle, the outer wall of the center hub 2 is connected with the annular frameworks 5 through the connecting rib group 3, the connecting rib group 3 consists of a plurality of connecting ribs which are distributed in a vortex shape, the inner ends of the connecting ribs are connected with the outer wall of the center hub 2, the outer ends of the connecting ribs are connected with the annular frameworks 5 so as to ensure that wind in the center area is dispersed outwards in a vortex shape under the action of centrifugal force to form radial wind flow, and the radial direction of the radial fan blades 4 are all arranged into arc shapes which are bent in the same direction, and the bending direction of the radial fan blades 4 is consistent with the bending direction of the connecting ribs which are distributed in the vortex shape, by the structural design, so that the connecting rib group 3 distributed in a vortex shape is connected with the outer end of the annular frameworks 4 in the radial direction of the radial fan blade 4, the radial wind flow can be more effectively rotated, and the wind pressure in the radial wind pressure in the process can be more vortex wind pressure in the process can be increased, and the wind pressure can be more effectively increased;
the radial fan blade components are connected with the surrounding wind walls 7 through a plurality of axial fan blades 6 which are distributed in a circumferential array by taking the center of the annular framework as the center of a circle, the inner sides of the axial fan blades 6 are connected with the outer sides of the radial fan blades 4, the axial fan blades 6 are all inclined towards the same direction, an air channel is reserved between every two adjacent axial fan blades 6, the surrounding wind walls 7 are full circles taking the center of the impeller axle center 1 as the center of a circle, and the surrounding wind walls 7 are used for blocking radial wind flow so that the radial wind flow turns to form axial wind flow.
Referring to fig. 5 and 6, the air wall 7 is higher than the axial fan blades 6 on the air outlet end face, and the height difference between the air wall 7 and the axial fan blades 6 is H 1 ，H 1 The effect of the wind surrounding wall 7 is to block radial wind flow to make the radial wind flow turn to form axial wind flow, so that the wind surrounding wall 7 on the wind outlet end face is higher than the axial fan blades 6 to achieve better blocking effectAs a result, a better formation of axial wind flow is ensured. The axial fan blade 6 is higher than the radial fan blade 4 on the air outlet end face, and the height difference between the axial fan blade 6 and the radial fan blade 4 is H 2 ，H 2 For 3mm, through the structural design that axial fan blades 6 are higher than radial fan blades 4 on the air outlet end face, can play better wind guiding effect, please ensure that radial wind flows outwards output along the axial air duct formed between adjacent axial fan blades 6. An angle alpha is arranged between the plane of the air outlet end face and the air surrounding wall 7, wherein the angle alpha is 60 degrees, and the larger the alpha is, the larger the external expansion angle gamma of the air outlet area is. The axial direction of the air outlet end surface plane and the radial fan blades 4 is designed to form an included angle beta of 75 degrees, the design of the beta is related to the noise during actual rotation, and in actual work, the noise is larger when the beta is smaller than 60 degrees and the noise is small when the beta is 75 degrees when the axial flow impeller rotates.
The annular axial flow impeller is simple in structure and reasonable in design, and through the design of the integral structure of the impeller, the radial fan blades 4 provide high-pressure air flow for the axial fan blades 6, so that the axial fan blades 6 can blow out larger air quantity and higher air speed. During practical installation, the axial hole on the impeller axis 1 can be in butt joint with an output shaft of the motor, during practical operation, when the motor drives the annular axial flow impeller to rotate, a radial wind gathering area is formed between the connecting rib group 3 and the radial fan blade assembly, the wind flow of the radial wind gathering area can be enabled to spread outwards in the rotating process, the axial fan blade 6 and the surrounding wind wall 7 form an axial fan area, the surrounding wind wall 7 can effectively turn radial wind flow to the axial direction, wind of the radial wind gathering area and wind of the axial fan area can be effectively overlapped through the axial fan area, high-pressure air flow is provided, and the axial fan area can blow out the effect of larger wind quantity and higher wind speed. And through the structural design to the axial contained angle beta of air-out terminal surface plane and radial fan blade 4, the cooperation is the structural design that the direction of buckling of the radial fan blade 4 of connection rib group 3 and arc that the vortex was distributed is unanimous, noise when can reduce the impeller rotation by a wide margin.
Example 2: an annular axial flow impeller.
Wind wallHeight difference H between 7 and axial fan blade 6 1 0.1mm, a height difference H between the axial fan blades 6 and the radial fan blades 4 2 The angle alpha between the plane of the air outlet end face and the wind surrounding wall 7 is 65 degrees, the axial included angle beta between the plane of the air outlet end face and the radial fan blades 4 is 90 degrees, and other technical characteristics are the same as those of the embodiment 1.
Example 3: an annular axial flow impeller.
Height difference H between the wind wall 7 and the axial fan blades 6 1 1mm, a height difference H between the axial fan blades 6 and the radial fan blades 4 2 The angle alpha between the plane of the air outlet end face and the wind surrounding wall 7 is-10 degrees, the axial included angle beta between the plane of the air outlet end face and the radial fan blade 4 is 60 degrees, and the other technical characteristics are the same as those of the embodiment 1.
The foregoing is a preferred embodiment of the present utility model, but the present utility model should not be limited to the embodiment and the disclosure of the drawings, so that the equivalents and modifications can be made without departing from the spirit of the disclosure.
Claims (10)
1. An annular axial flow impeller, comprising: the radial fan blade assembly is connected with the surrounding wind wall through a plurality of axial fan blades which are distributed in a circumferential array by taking the center of the central hub as the center of a circle.
2. The annular axial flow impeller of claim 1, wherein: the radial fan blade assembly comprises a plurality of radial fan blades which are distributed in a circumferential array by taking the center of the central hub as the center of the circle, and annular frameworks which are arranged at the front end and the rear end of the radial fan blades which are distributed in the circumferential array by taking the center of the central hub as the center of the circle, wherein the outer wall of the central hub is connected with the annular frameworks through a connecting rib group.
3. The annular axial flow impeller of claim 2, wherein: the connecting rib group is composed of a plurality of connecting ribs which are distributed in a vortex shape, the inner ends of the connecting ribs are connected with the outer wall of the central hub, and the outer ends of the connecting ribs are connected with the annular framework.
4. The annular axial flow impeller of claim 3, wherein: the radial fan blades are radially arranged to be bent in the same direction, and the bending direction of the radial fan blades is consistent with the bending direction of the connecting ribs in vortex-like distribution.
5. The annular axial flow impeller of claim 1, wherein: the axial fan blades are all arranged to incline towards the same direction, and an air channel is reserved between every two adjacent axial fan blades.
6. The annular axial flow impeller of claim 1, wherein: the air surrounding wall is higher than the axial fan blades on the air outlet end face, and the height difference between the air surrounding wall and the axial fan blades is H 1 ，0.1mm≤H 1 ≤1mm。
7. The annular axial flow impeller of claim 1, wherein: the axial fan blade is higher than the radial fan blade on the air outlet end face, and the height difference between the axial fan blade and the radial fan blade is H 2 ，0.1mm≤H 2 ≤4mm。
8. The annular axial flow impeller of claim 1, wherein: an angle alpha-10 degrees < alpha <65 degrees is arranged between the plane of the air outlet end face and the air surrounding wall.
9. The annular axial flow impeller of claim 1, wherein: an included angle beta is designed between the plane of the air outlet end face and the axial direction of the radial fan blade, and is more than or equal to 60 degrees and less than or equal to 90 degrees.
10. The annular axial flow impeller of claim 1, wherein: the wind surrounding wall is a whole circle taking the center of the impeller axle center as the center of the circle, or is a plurality of sections of circular arcs taking the center of the impeller axle center as the center of the circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222864306.4U CN219691780U (en) | 2022-10-28 | 2022-10-28 | Annular axial flow impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222864306.4U CN219691780U (en) | 2022-10-28 | 2022-10-28 | Annular axial flow impeller |
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| Publication Number | Publication Date |
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| CN219691780U true CN219691780U (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222864306.4U Active CN219691780U (en) | 2022-10-28 | 2022-10-28 | Annular axial flow impeller |
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| CN (1) | CN219691780U (en) |
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- 2022-10-28 CN CN202222864306.4U patent/CN219691780U/en active Active
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