CN117967600B - Magnetic suspension centrifugal fan impeller - Google Patents
Magnetic suspension centrifugal fan impeller Download PDFInfo
- Publication number
- CN117967600B CN117967600B CN202410381350.0A CN202410381350A CN117967600B CN 117967600 B CN117967600 B CN 117967600B CN 202410381350 A CN202410381350 A CN 202410381350A CN 117967600 B CN117967600 B CN 117967600B
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- CN
- China
- Prior art keywords
- air
- guide
- cambered surface
- air inlet
- guide vane
- 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.)
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Links
- 239000000725 suspension Substances 0.000 title claims abstract description 13
- 241000886569 Cyprogenia stegaria Species 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims 6
- 238000005339 levitation Methods 0.000 claims 6
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000000670 limiting effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000009372 pisciculture Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of fan impellers, in particular to a magnetic suspension centrifugal fan impeller which comprises a wheel body and a guide vane, wherein the wheel body is overlapped with the axis of the guide vane, the wheel body comprises a chassis and an air guide cambered surface, and the upper surface of the chassis and the upper surface of the guide vane are both positioned in the same plane; a plurality of wind guide blades are arranged on the wind guide cambered surface and are uniformly distributed on the wind guide cambered surface; the wind-guiding fan blade is provided with an air inlet surface, an air outlet surface and a windward surface, the air inlet surface is in a bent shape, the air inlet surface is perpendicular to the axis of the wheel body, the air outlet surface is perpendicular to the chassis, one end of the windward surface is connected with the wind-guiding cambered surface, and two sides of the windward surface are respectively connected with the air inlet surface and the air outlet surface; compared with the prior art, the working efficiency of the impeller can be effectively improved after the air inlet surface, the air outlet surface and the windward surface of the air guide fan blade are improved, the polytropic efficiency of the impeller can reach 87.8% after the test, and the efficiency of the air compressor reaches 89%.
Description
Technical Field
The invention relates to the technical field of fan impellers, in particular to a magnetic suspension centrifugal fan impeller.
Background
At present, fan equipment is widely used for large-scale sewage treatment and oxygen supply in fish farming industry, but the problems of insufficient static pressure, low efficiency and overlarge noise and volume of a multi-stage blower and a Roots blower generally exist, and the requirements of society and users are difficult to meet. In recent years, with the continuous improvement of the requirements of social environmental protection on energy conservation and noise, the magnetic suspension air blower with high efficiency, small volume and high outlet pressure is widely applied to large-scale sewage treatment and oxygen supply of fish farming industry, and the efficiency and low noise index of the magnetic suspension air blower are also increasingly improved.
As a core component of the magnetic suspension centrifugal fan, the design of the high-efficiency impeller and the volute has certain limitation on aerodynamic efficiency, and the traditional structure can generate larger end flow and resistance when fluid flows through, so that the efficiency of the fan is affected; the design of the three-way flow impeller can effectively reduce the occurrence of large clearance vortex between the surface separation flow of the blade and the blade tip, can improve the flow efficiency of air, and further improve the energy efficiency of the integral fan, but the efficiency of the air compressor generated by the existing three-way flow impeller is lower, so that the three-way flow impeller capable of improving the efficiency of the air compressor is needed.
Disclosure of Invention
The invention aims to provide a magnetic suspension centrifugal fan impeller, and aims to solve the problem that the efficiency of an existing three-dimensional flow impeller compressor is low.
In order to achieve the aim, the invention provides a magnetic suspension centrifugal fan impeller which comprises a wheel body and a guide vane, wherein the wheel body is overlapped with the axis of the guide vane; the wheel body comprises a chassis and an air guide cambered surface, a plurality of air guide blades are arranged on the air guide cambered surface, and the air guide blades are uniformly distributed on the air guide cambered surface; the wind-guiding fan blades are provided with an air inlet surface, an air outlet surface and a windward surface, the air inlet surface is formed by a plurality of sections of cambered surfaces, the openings of two adjacent sections of cambered surfaces face opposite directions, the air inlet surface is vertical to the axis of the wheel body, the air outlet surface is vertical to the chassis, the planes formed by the side lines at the bottoms of the air outlet surfaces of the plurality of groups of wind-guiding fan blades are vertical to the axis of the wheel body, and the planes are overlapped with the upper surfaces of the guide vanes; one end of the windward side is connected with the wind guiding cambered surface, and two sides of the windward side are respectively connected with the air inlet side and the air outlet side;
The air inlet surface is wavy, and an air inlet included angle formed by the projection of the air inlet surface on the chassis and the air inlet direction is theta 3, and the theta 3 is more than or equal to 90 degrees and less than or equal to 93 degrees; the projection of the air outlet surface on the chassis and the air outlet direction form an air outlet included angle theta 4, and the theta 4 is more than or equal to 46 degrees and less than or equal to 49 degrees.
Further, a plurality of groups of guide vanes which are uniformly distributed by taking the axis of the guide vane as the circle center are arranged on the guide vane, and the height H1 of the guide vanes is 9-10mm; the width Z1 is 102-105mm.
Further, the projection of the guide vane on the guide vane is crescent, a front cambered surface and a back cambered surface are arranged on the guide vane, each of the front cambered surface and the back cambered surface is composed of continuous circular arcs, and the radius of the circular arcs is reduced along with the increase of the distance between the guide vane and the axis of the guide vane.
Further, an air inlet angle theta 1 formed by a tangent line of the front cambered surface in the projection inner side direction on the guide vane and a tangent line of a circle formed by the inner side of the front cambered surface is more than or equal to 157 degrees and less than or equal to 160 degrees.
Further, an air outlet angle theta 2 formed by a tangent line of the front cambered surface in the projection outer side direction on the guide vane and a tangent line of a circle formed by the outer side of the front cambered surface is more than or equal to 38 degrees and less than or equal to 42 degrees.
Further, the length Z2 of the air inlet surface is 42-45mm, and the height H3 of the air outlet surface is 12-14mm.
Further, the whole height H4 of the wheel body is 103-106mm, and the diameter D1 of the chassis is 215-220mm.
Further, 13 fan blades are arranged on the cambered surface, and the thickness of the fan blades is reduced along with the increase of the distance between the fan blades and the wind-guiding cambered surface.
Further, a fixed hole connected with the fan rotor is arranged on the wheel body.
Further, a threaded hole for being fixedly connected with the fan shell is formed in the guide vane.
Compared with the prior art, the magnetic suspension centrifugal fan impeller provided by the invention adopts a three-way flow impeller structure, so that the occurrence of large-clearance vortex between the separation flow on the surface of the blade and the top of the blade is reduced, the flow efficiency of air is improved, and the fluency of air flow is improved; the improved air inlet face, air outlet face and windward face of the air guide fan blade can effectively improve the working efficiency of the impeller, the variable efficiency of the impeller can reach 87.8% after testing, and the efficiency of the air compressor reaches 89%.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a top view of a vane of the present invention;
FIG. 4 is a front view of a vane of the present invention;
FIG. 5 is a perspective view of the wheel of the present invention;
FIG. 6 is a cross-sectional view of an impeller of the present invention;
FIG. 7 is an enlarged partial view of portion A of FIG. 6;
FIG. 8 is an expanded view of the windward side of the present invention;
fig. 9 is a top view of a fan blade according to the present invention.
Reference numerals illustrate:
Wherein; 1. a wheel body; 101. a chassis; 102. an air guide cambered surface; 103. a fan blade; 104. an air inlet surface; 105. a windward side; 106. an air outlet surface; 2. a guide vane; 201. a guide vane; 202. a back arc surface; 203. a front cambered surface.
Detailed Description
The present invention will be described in detail with reference to specific examples.
In the present invention, unless explicitly stated and limited otherwise, when terminology such as "disposed," "connected," or "connected" is intended to be interpreted broadly, such as, for example, a fixed connection, a removable connection, or an integral connection; may be directly connected or connected through one or more intermediaries. The specific meaning of the terms described above in the present invention can be understood by those skilled in the art according to the specific circumstances. The direction words appearing in the invention are used for better explaining the characteristics of the features and the relation among the features, and it is understood that when the arrangement direction of the invention is changed, the characteristics of the features and the directions of the relation among the features are correspondingly changed, so that the direction words do not form absolute limiting effect on the characteristics of the features and the relation among the features in space, and only play a role in relative limiting.
As shown in fig. 1 to 9, the invention provides a magnetic suspension centrifugal fan impeller, which comprises a wheel body 1 and a guide vane 2, wherein the wheel body 1 coincides with the axis of the guide vane 2; the wheel body 1 comprises a chassis 101 and an air guide cambered surface 102, wherein a plurality of air guide blades 103 are arranged on the air guide cambered surface 102, and the air guide blades 103 are uniformly distributed on the air guide cambered surface 102; the wind-guiding fan blades 103 are provided with an air inlet surface 104, an air outlet surface 106 and a windward surface 105, the air inlet surface 104 is formed by a plurality of sections of cambered surfaces, the openings of the two adjacent sections of cambered surfaces face opposite directions, the air inlet surface 104 is vertical to the axis of the guide vane 2, the air outlet surface 106 is vertical to the chassis 101, the plane formed by the side lines at the bottoms of the air outlet surfaces 106 of the plurality of groups of wind-guiding fan blades 103 is vertical to the axis of the guide vane 1, and the plane is overlapped with the upper surface of the guide vane 2; one end of a windward side 105 is connected with the wind guiding cambered surface 102, and two sides of the windward side 105 are respectively connected with the air inlet side 104 and the air outlet side 106; the air inlet surface 104 is wavy, and an air inlet included angle formed by the projection of the air inlet surface 104 on the chassis 101 and the air inlet direction is theta 3, and the theta 3 is more than or equal to 90 degrees and less than or equal to 93 degrees; the projection of the air outlet surface 106 on the chassis 101 and the air outlet direction form an air outlet included angle theta 4, and theta 4 is more than or equal to 46 degrees and less than or equal to 49 degrees.
Through the above design scheme, the impeller can inhale the air current from air inlet face 104 after rotating, blows out through air outlet face 106 after guiding and compressing through air guide fan blade 103, and the velocity of flow and the total pressure of air current will increase by a wide margin after the compression of air guide fan blade 103.
In the embodiment, a plurality of groups of guide vanes 201 which are uniformly distributed by taking the axis of the guide vane 2 as the circle center are arranged on the guide vane 2, and the height H1 of the guide vanes 201 is 9-10mm; the width Z1 is 102-105mm.
In this embodiment, the projection of the guide vane 201 on the guide vane 2 is crescent, the guide vane 201 is provided with a front cambered surface 203 and a back cambered surface 202, the front cambered surface 203 and the back cambered surface 202 are both composed of continuous circular arcs, and the radius of the circular arcs is reduced along with the increase of the distance from the axis of the guide vane 2.
Since the guide vane 2 is fixedly mounted on the fan shell and the guide vane 2 is positioned at the air outlet surface 106 of the wheel body 1, when the wheel body 1 rotates, compressed air flow blown out from the air outlet surface 106 directly impacts on the front cambered surface 203 under the action of inertia, so that the air flow can flow out under the guidance of the front cambered surface 203, and on the basis, in the embodiment, the air inlet angle formed by the tangent line of the front cambered surface 203 in the projection inner side direction of the guide vane 2 and the tangent line of a circle formed by the inner side of the front cambered surface 203 is theta 1, and the air inlet angle is 157 DEG is less than or equal to theta 1 and less than or equal to 160 deg.
In the present embodiment, the air outlet angle formed by the tangent line of the front cambered surface 203 in the projection outside direction on the guide vane 2 and the tangent line of the circle formed outside the front cambered surface 203 is θ2, 38 ° Σ2+42 °.
By the above design scheme, most of the compressed air flow is located at one side of the front cambered surface 203, so that the air pressure at the front cambered surface 203 is higher than that at one side of the back cambered surface 202, and a low pressure area is formed at one side of the back cambered surface 202; when the rotational speed of the wheel body 1 increases within a certain rotational speed, the air pressure difference between the front cambered surface 203 and the back cambered surface 202 will increase, and the compressed air flow blown out from the wheel body 1 under the action of the guide vane 201 will be further accelerated because the air flow in the high pressure area will actively flow to the low pressure area.
In this embodiment, the length Z2 of the air inlet surface 104 is 42-45mm, and the height H3 of the air outlet surface 106 is 12-14mm.
In this embodiment, the height H4 of the wheel body 1 is 103-106mm, and the diameter D1 of the chassis 101 is 215-220mm.
In this embodiment, 13 air guiding blades 103 are mounted on the air guiding cambered surface 102, and the thickness of the air guiding blades 103 decreases with increasing distance from the air guiding cambered surface 102.
Through tests, when the rotating speed of the impeller reaches 30000rpm, under the conditions that the inlet temperature is 20 ℃ and the total inlet pressure is 101.3Kpa, the total outlet temperature can reach 99.5 ℃ after the wheel body 1 and the guide vanes 2 are increased, the total outlet pressure can also reach 211.808Kpa, and the single-stage pressure ratio can reach 2.09 through the tests.
In the present embodiment, the wheel body 1 is provided with a fixing hole connected to the fan rotor.
In the present embodiment, screw holes for fixed connection with the fan housing are provided on the guide vanes 2.
Compared with the prior art, the magnetic suspension centrifugal fan impeller provided by the invention adopts a three-way flow impeller structure, so that the occurrence of large-clearance vortex between the separation flow on the surface of the blade and the top of the blade is reduced, the flow efficiency of air is improved, and the fluency of air flow is improved; the improved air inlet surface 104, air outlet surface 106 and windward surface 105 of the air guiding fan blade 103 can effectively improve the working efficiency of the impeller, the variable efficiency of the impeller can reach 87.8% after test, and the efficiency of the air compressor reaches 89%.
The above-described embodiments and features of the embodiments may be combined with each other without conflict.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a magnetic suspension centrifugal fan impeller, includes wheel body (1) and stator (2), its characterized in that: the wheel body (1) coincides with the axis of the guide vane (2); the wheel body (1) comprises a chassis (101) and an air guide cambered surface (102), a plurality of air guide blades (103) are arranged on the air guide cambered surface (102), and the air guide blades (103) are uniformly distributed on the air guide cambered surface (102); an air inlet surface (104), an air outlet surface (106) and an air facing surface (105) are arranged on the air guide blade (103), the air inlet surface (104) is formed by a plurality of sections of cambered surfaces, the openings of the two adjacent sections of cambered surfaces face opposite directions, the air inlet surface (104) is perpendicular to the axis of the wheel body (1), the air outlet surface (106) is perpendicular to the chassis (101), the plane formed by the side lines at the bottoms of the air outlet surfaces (106) of the plurality of groups of air guide blades (103) is perpendicular to the axis of the wheel body (1), and the plane coincides with the upper surface of the guide blade (2); one end of a windward surface (105) is connected with the wind guiding cambered surface (102), and two sides of the windward surface (105) are respectively connected with the air inlet surface (104) and the air outlet surface (106);
The air inlet surface (104) is wavy, and an air inlet included angle formed by the projection of the air inlet surface (104) on the chassis (101) and the air inlet direction is theta 3, and the theta 3 is more than or equal to 90 degrees and less than or equal to 93 degrees; an air outlet included angle formed by the projection of the air outlet surface (106) on the chassis (101) and the air outlet direction is theta 4, and the theta 4 is more than or equal to 46 degrees and less than or equal to 49 degrees;
the projection of the guide vane (201) on the guide vane (2) is crescent, a front cambered surface (203) and a back cambered surface (202) are arranged on the guide vane (201), the front cambered surface (203) and the back cambered surface (202) are both composed of continuous circular arcs, and the radius of the circular arcs is reduced along with the increase of the distance between the guide vane and the axis of the guide vane (2);
An air inlet angle formed by a tangent line of the front cambered surface (203) in the projection inner side direction on the guide vane (2) and a tangent line of a circle formed by the inner side of the front cambered surface (203) is theta 1, and the theta 1 is more than or equal to 157 degrees and less than or equal to 160 degrees.
2. A magnetic levitation centrifugation fan impeller according to claim 1, wherein: a plurality of groups of guide vanes (201) which are uniformly distributed by taking the axis of the guide vane (2) as the circle center are arranged on the guide vane (2), and the height H1 of the guide vanes (201) is 9-10mm; the width Z1 is 102-105mm.
3. A magnetic levitation centrifugation fan impeller according to claim 1, wherein: the air outlet angle formed by the tangent line of the front cambered surface (203) in the projection outer side direction on the guide vane (2) and the tangent line of a circle formed by the outer side of the front cambered surface (203) is theta 2, and the theta 2 is more than or equal to 38 degrees and less than or equal to 42 degrees.
4. A magnetic levitation centrifugation fan impeller according to claim 1, wherein: the length Z2 of the air inlet surface (104) is 42-45mm, and the height H3 of the air outlet surface (106) is 12-14mm.
5. A magnetic levitation centrifugation fan impeller according to claim 1, wherein: the height H4 of the wheel body (1) is 103-106mm, and the diameter D1 of the chassis (101) is 215-220mm.
6. A magnetic levitation centrifugation fan impeller according to claim 1, wherein: 13 air guide blades (103) are arranged on the air guide cambered surface (102), and the thickness of the air guide blades (103) is reduced along with the increase of the distance between the air guide blades and the air guide cambered surface (102).
7. A magnetic levitation centrifugation fan impeller according to claim 1, wherein: the wheel body (1) is provided with a fixed hole connected with a fan rotor, and the guide vane (2) is provided with a threaded hole fixedly connected with a fan shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410381350.0A CN117967600B (en) | 2024-04-01 | 2024-04-01 | Magnetic suspension centrifugal fan impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410381350.0A CN117967600B (en) | 2024-04-01 | 2024-04-01 | Magnetic suspension centrifugal fan impeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117967600A CN117967600A (en) | 2024-05-03 |
| CN117967600B true CN117967600B (en) | 2024-05-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410381350.0A Active CN117967600B (en) | 2024-04-01 | 2024-04-01 | Magnetic suspension centrifugal fan impeller |
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| Country | Link |
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| CN (1) | CN117967600B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118548244B (en) * | 2024-07-26 | 2024-10-15 | 佛山市南海九洲普惠风机有限公司 | M-shaped inlet efficient centrifugal blower impeller |
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| CN113383164A (en) * | 2018-11-19 | 2021-09-10 | 智能E有限责任公司 | Non-lubricated centrifugal compressor |
| CN114542507A (en) * | 2020-11-24 | 2022-05-27 | 青岛海尔智能技术研发有限公司 | Centrifugal compressor and impeller thereof |
| CN115773276A (en) * | 2021-09-06 | 2023-03-10 | 北京昆腾迈格技术有限公司 | High-speed impeller and hydrogen circulating pump |
-
2024
- 2024-04-01 CN CN202410381350.0A patent/CN117967600B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001140790A (en) * | 1999-11-17 | 2001-05-22 | Nippon Keiki Works Ltd | Small diversion fan |
| CN105041686A (en) * | 2015-06-30 | 2015-11-11 | 浙江飞越机电有限公司 | Turbine type vacuum pump and automatic variable pumping speed vacuum obtaining device with pump |
| CN204805117U (en) * | 2015-06-30 | 2015-11-25 | 浙江飞越机电有限公司 | Turbine formula vacuum pump |
| CN205190328U (en) * | 2015-11-30 | 2016-04-27 | 青岛海尔空调器有限总公司 | A machine in centrifugal fan and air conditioning for machine in air conditioning |
| WO2018158260A1 (en) * | 2017-03-03 | 2018-09-07 | Convotherm-Elektrogeräte Gmbh | Fan wheel |
| CN109281864A (en) * | 2018-11-01 | 2019-01-29 | 南通大通宝富风机有限公司 | A kind of sealing structure of magnetic suspension air blower |
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| Publication number | Publication date |
|---|---|
| CN117967600A (en) | 2024-05-03 |
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