CN211623815U - Air exhaust centrifugal impeller - Google Patents
Air exhaust centrifugal impeller Download PDFInfo
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- CN211623815U CN211623815U CN202020090457.7U CN202020090457U CN211623815U CN 211623815 U CN211623815 U CN 211623815U CN 202020090457 U CN202020090457 U CN 202020090457U CN 211623815 U CN211623815 U CN 211623815U
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Abstract
The utility model discloses an exhaust centrifugal impeller, which comprises a plurality of connected blades, a reinforcing ring arranged towards the air inlet side of the blades and a hub arranged opposite to the reinforcing ring; the reinforcing ring, the blades and the hub are integrally molded; the blades are uniformly distributed on the outer edge surface of the hub along the axis circumference of the hub; the outer side end of the blade extends out of the hub, and the length of the blade extending out of the hub is 0.3% -1.2% of the diameter of the hub. The utility model uses the injection molding material to replace the metal material, and adopts the processing technique of integral molding; meanwhile, the overall structure of the impeller is improved and optimized, the angle, the thickness and the number of the blades are included, and the hub is matched with the blades, so that the inclination angle of the blades is a2 between 12 degrees and 26 degrees, the airflow flowing loss of the outlet part of the impeller is reduced, the effects of reducing noise and increasing air quantity are achieved, the structure is novel, the processing is convenient, the cost is low, the air collecting effect is good, and the air quantity noise is greatly superior to that of the centrifugal impeller of the same type.
Description
Technical Field
The utility model relates to a ventilation technology field especially relates to a centrifugal impeller airs exhaust.
Background
The material of the centrifugal impeller of airing exhaust of current lampblack absorber generally uses the metal material, and go up wheel hub, blade and lower wheel hub and all assemble through complicated processes such as welding after artifical independent processing respectively and form, and need additionally install aluminium axle sleeve in wheel hub's axle center department down and guarantee centrifugal impeller's steady rotation, the process is various, and is efficient, and quality and performance are difficult to guarantee, and are with high costs.
In addition, because the air exhaust structure formed among the upper hub, the blades and the lower hub in the centrifugal impeller is unreasonable in design, in the process that air is sucked from the axial inlet to be exhausted from the radial outlet, part of air flow is influenced by the air channel structure and collides with the inner wall of the air channel to generate noise, and meanwhile, the whole air volume of the impeller is also influenced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide an exhaust centrifugal impeller, which is integrally made of plastic materials, is integrally molded, has simple structure and reasonable design, does not need to additionally process and assemble an aluminum shaft sleeve, reduces the manufacturing cost and improves the integrity and the stability of the centrifugal impeller; meanwhile, the overall structure of the impeller is improved and optimized, so that the air quantity is greatly improved, and the air outlet noise is obviously reduced.
An exhaust centrifugal impeller is characterized by comprising a plurality of connected blades, a reinforcing ring arranged towards the air inlet side of the blades and a hub arranged opposite to the reinforcing ring; the reinforcing ring, the blades and the hub are integrally molded; the blades are uniformly distributed on the outer edge surface of the hub along the axis circumference of the hub; the outer side end of the blade extends out of the hub, and the length of the blade extending out of the hub is 0.3% -1.2% of the diameter of the hub;
the cross section of the blade is arc-shaped, and the air outlet angle a1 at the outer end of the blade ranges from 30 degrees to 55 degrees; the inner ends of the blades are fillets; the distance between the adjacent blades from the air inlet end to the air outlet end tends to be equal; the thickness of the blade is 1.0 mm-1.3 mm; the inclination angle a2 of the blade ranges from 12 degrees to 26 degrees; the diameter of the blade is A, and the inner arc size and the outer arc size of the blade are both 0.75A-0.87A.
Preferably, the blades are arranged on a hub; the inner end and the outer end of each blade form a blade inner circle and a blade outer circle respectively; the diameter of the blade excircle, namely the hub; the diameter of the inner circle of the blade is 74% -91% of the diameter of the outer circle of the blade; the diameter of the boss surface of the hub is 65% -78% of the diameter of the inner circle of the blade and is 1.46-1.57 times of the diameter of the outer circle of the blade.
Preferably, the height of the hub is 0.5 times the length of the blade.
Preferably, a shaft sleeve is arranged in the center of the hub; reinforcing strips which are uniformly distributed along the circumference of the axis of the shaft sleeve are arranged on the inner surface of the hub; one end of the reinforcing strip is positioned at the joint of the shaft sleeve and the hub, and the other end of the reinforcing strip extends to the middle part of the inner surface of the hub; and reinforcing ribs which are uniformly distributed along the circumference of the axis of the shaft sleeve are arranged between the outer wall of the shaft sleeve and the reinforcing strips.
Preferably, the outer diameter of the hub is 210 mm; the air outlet angle a1 of the outer end of each blade is 54 degrees; the thickness of the blade is 1.2mm, and the height of the blade is 64 mm; the angle of inclination a2 of the blade is 20 °.
Preferably, the number of the blades is 47.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model discloses a replace metal material with the material of moulding plastics, adopt integrated into one piece fashioned processing technology, cancelled the axle sleeve simultaneously, saved loaded down with trivial details processing step, improved production efficiency, reduced manufacturing cost, guaranteed the uniformity and the stability of product.
2. The integral structure of the impeller is improved and optimized, the angle, the thickness and the number of the blades are included, and the hub is matched with the blades, so that the inclination angle a2 of the blades is between 12 and 26 degrees, the length of the blades extending out of the hub is 0.3 to 1.2 percent of the diameter of the hub, the airflow flow loss at the outlet of the impeller is reduced, and the effects of reducing noise and increasing air volume are achieved; meanwhile, the diameter of the inner circle of each blade is 0.6-0.8 time of the diameter of the boss surface of the hub, the height of the hub is 0.5 time of the length of each blade, the air inlet area is increased, the air volume is increased, and the air collection performance is improved by 12%. The air exhaust centrifugal impeller has the advantages of novel structure, convenience in processing, low cost, good air collection effect and low noise, and the air volume noise is greatly superior to that of the centrifugal impellers of the same type.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a top view of the present invention;
wherein: the wind-driven generator comprises a reinforcing ring 1, blades 2, a hub 3, a shaft sleeve 4, a reinforcing bar 5, reinforcing ribs 6, an air outlet angle a1 and an inclination angle a 2.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "front," "back," "left," "right," "up," "down," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention will be further described with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1-2, an exhaust centrifugal impeller is characterized by comprising a plurality of connected blades 2, a reinforcing ring 1 arranged towards the air inlet side of the blades 2 and a hub 3 arranged opposite to the reinforcing ring 1; the reinforcing ring 1, the blades 2 and the hub 3 are integrally molded; the blades 2 are uniformly distributed on the outer edge surface of the hub 3 along the axis circumference of the hub 3; the outer side end of the blade 2 extends out of the hub 3, and the length of the blade 2 extending out of the hub 3 is 0.3-1.2% of the diameter of the hub 3; the length that the blade 2 of this patent stretches out outside wheel hub 3 is wheel hub 3 diameter 0.3% ~ 1.2%, and its parameter is very important, and when the length that blade 2 stretches out outside wheel hub 3 was less than 0.3%, the impeller total pressure efficiency did not have obvious change, and when the length that blade 2 stretches out outside wheel hub 3 was greater than 1.2%, the impeller total pressure efficiency descends gradually, especially noise is crescent, and increases more than 0.5dB at least.
In addition, the structure that the blades 2, the hub 3 and the reinforcing ring 1 are integrally molded is adopted, so that the processing procedures are reduced, and the problem that the overall performance of the impeller is influenced due to insufficient matching precision among the blades 2, the reinforcing ring 3 and the hub 1 in a split structure is solved.
The cross section of the blade 2 is arc-shaped, and the air outlet angle a1 at the outer end of the blade 2 ranges from 30 degrees to 55 degrees; the inner ends of the blades are fillets; the distance between the adjacent blades 2 from the air inlet end to the air outlet end tends to be equal; the thickness of the blade 2 is 1.0 mm-1.3 mm; the inclination angle a2 of the blade 2 ranges from 12 degrees to 26 degrees; the diameter of the blade 2 is A, and the inner arc size and the outer arc size of the blade 2 are both 0.75A-0.87A. Based on the injection molding material, the thickness and the angle of the blade 2 and the overall shape of the blade 2 are reasonably changed, particularly for cost control, when the thickness range of the blade 2 is controlled to be 1.0 mm-1.3 mm, the inclination angle a2 is controlled to be 12-26 degrees, and the wind collecting effect and the noise reduction effect of the impeller are optimal.
Further, the blades 2 are arranged on the hub 3; the inner end and the outer end of the blade 2 form a blade inner circle and a blade outer circle respectively; the diameter of the blade outer circle, i.e. the hub 3; the diameter of the inner circle of the blade is 74% -91% of the diameter of the outer circle of the blade; the diameter of the boss surface of the hub 3 is 65-78% of the diameter of the inner circle of the blade and is 1.46-1.57 times of the diameter of the outer circle of the blade; through the arrangement of the structure, air flow enters the impeller from the air inlet of the impeller and then enters the corresponding air channel from the air inlet end of the blade, the direct action of the air flow on the hub is reduced, the air inlet area is increased, the air quantity is increased, the air collection performance is improved by 12%, and meanwhile, the wind dryness is reduced.
Further, the height of the hub 3 is 0.5 times the length of the blade 2.
Further, a shaft sleeve 4 is arranged in the center of the hub 3; the inner surface of the hub 3 is provided with reinforcing strips 5 which are uniformly distributed along the circumference of the axis of the shaft sleeve 4; one end of the reinforcing strip 5 is positioned at the joint of the shaft sleeve 4 and the hub 3, and the other end of the reinforcing strip extends to the middle part of the inner surface of the hub 3; reinforcing ribs 6 which are uniformly distributed along the circumference of the axis of the shaft sleeve 4 are arranged between the outer wall of the shaft sleeve 4 and the reinforcing strips; for improving the overall strength of the impeller.
Further, the outer diameter of the hub 3 is 210 mm; the air outlet angle a1 of the outer end of the blade 2 is 54 degrees; the thickness of the blade 2 is 1.2mm, and the height is 64 mm; the angle of inclination a2 of the blade 2 is 20 °.
Further, the number of the blades 2 is 47; the more the number of the blades is, the smaller the noise is, certainly not too many, and the too many blades influence the air quantity; the number of the blades is set to 47, because 47 cannot be divided by other numbers, the electromagnetic noise frequency of the motor is avoided, and the noise is reduced; meanwhile, the air quantity effect is optimal under the condition of controlling the cost by matching the structure.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the present invention.
Claims (6)
1. An exhaust centrifugal impeller is characterized by comprising a plurality of connected blades, a reinforcing ring arranged towards the air inlet side of the blades and a hub arranged opposite to the reinforcing ring; the reinforcing ring, the blades and the hub are integrally molded; the blades are uniformly distributed on the outer edge surface of the hub along the axis circumference of the hub; the outer side end of the blade extends out of the hub, and the length of the blade extending out of the hub is 0.3% -1.2% of the diameter of the hub;
the cross section of the blade is arc-shaped, and the wind outlet angle (a1) at the outer end of the blade ranges from 30 degrees to 55 degrees; the inner ends of the blades are fillets; the distance between the adjacent blades from the air inlet end to the air outlet end tends to be equal; the thickness of the blade is 1.0 mm-1.3 mm; the inclination angle (a2) of the blade is in the range of 12-26 degrees; the diameter of the blade is A, and the inner arc size and the outer arc size of the blade are both 0.75A-0.87A.
2. An exhaust centrifugal impeller according to claim 1 wherein said blades are arranged on a hub; the inner end and the outer end of each blade form a blade inner circle and a blade outer circle respectively; the diameter of the blade excircle, namely the hub; the diameter of the inner circle of the blade is 74% -91% of the diameter of the outer circle of the blade; the diameter of the boss surface of the hub is 65% -78% of the diameter of the inner circle of the blade and is 1.46-1.57 times of the diameter of the outer circle of the blade.
3. An exhaust centrifugal impeller according to claim 1 wherein the height of the hub is 0.5 times the length of the blades.
4. The exhaust centrifugal impeller of claim 1 wherein a hub is centrally disposed; reinforcing strips which are uniformly distributed along the circumference of the axis of the shaft sleeve are arranged on the inner surface of the hub; one end of the reinforcing strip is positioned at the joint of the shaft sleeve and the hub, and the other end of the reinforcing strip extends to the middle part of the inner surface of the hub; and reinforcing ribs which are uniformly distributed along the circumference of the axis of the shaft sleeve are arranged between the outer wall of the shaft sleeve and the reinforcing strips.
5. An exhaust centrifugal impeller according to claim 1 wherein the hub outer diameter is 210 mm; the wind exit angle (a1) of the outer end of the blade is 54 °; the thickness of the blade is 1.2mm, and the height of the blade is 64 mm; the angle of inclination (a2) of the vanes is 20 °.
6. An exhaust centrifugal impeller according to claim 1 wherein the number of said blades is 47.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020090457.7U CN211623815U (en) | 2020-01-16 | 2020-01-16 | Air exhaust centrifugal impeller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020090457.7U CN211623815U (en) | 2020-01-16 | 2020-01-16 | Air exhaust centrifugal impeller |
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| CN211623815U true CN211623815U (en) | 2020-10-02 |
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| CN202020090457.7U Active CN211623815U (en) | 2020-01-16 | 2020-01-16 | Air exhaust centrifugal impeller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439771A (en) * | 2022-01-24 | 2022-05-06 | 广东顺威精密塑料股份有限公司 | Become inclined formula centrifugal impeller |
| CN114526261A (en) * | 2022-02-23 | 2022-05-24 | 浙江得业电机科技有限公司 | Impeller with high-low curved surface structure |
-
2020
- 2020-01-16 CN CN202020090457.7U patent/CN211623815U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439771A (en) * | 2022-01-24 | 2022-05-06 | 广东顺威精密塑料股份有限公司 | Become inclined formula centrifugal impeller |
| CN114526261A (en) * | 2022-02-23 | 2022-05-24 | 浙江得业电机科技有限公司 | Impeller with high-low curved surface structure |
| CN114526261B (en) * | 2022-02-23 | 2024-04-02 | 浙江得业电机科技有限公司 | Impeller with high-low curved surface structure |
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