CN117212212A - Small-sized continuous high-speed blower and test mode thereof - Google Patents
Small-sized continuous high-speed blower and test mode thereof Download PDFInfo
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- CN117212212A CN117212212A CN202311233185.6A CN202311233185A CN117212212A CN 117212212 A CN117212212 A CN 117212212A CN 202311233185 A CN202311233185 A CN 202311233185A CN 117212212 A CN117212212 A CN 117212212A
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- 238000012360 testing method Methods 0.000 title claims abstract description 15
- 241000883990 Flabellum Species 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000002688 persistence Effects 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 230000002085 persistent effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 16
- 238000013461 design Methods 0.000 abstract description 9
- 238000005457 optimization Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention relates to the technical field of blowers, in particular to a small continuous high-speed blower and a testing mode thereof, which can ensure the numerical value of the flow in a path while reducing the wind resistance coefficient of a guide blade by improving the optimal design of the wind barrel, promote the fluid to be linearly and uniformly led out of the wind barrel, ensure the stable operation of the blade, further stabilize the position of the blade by supporting auxiliary structures such as springs, bearings, wind guide pads and the like, prevent the centrifugal vibration of the blade, finally react on a rotating shaft, influence the rotating efficiency of the rotating shaft, greatly improve the running environment of the blade, improve the overall efficiency of the blower, and further improve the service life of the blower due to the optimization of the running environment of the blade.
Description
Technical Field
The invention relates to the technical field of blowers, in particular to a small continuous high-speed blower and a test mode thereof.
Background
At present, the brushless motor is more and more miniaturized, light-weighted and high-speed, but the high-efficiency axial flow fan matched with high rotating speed is few, especially the diameter is below 100mm, and after products such as a high-speed blower motor, a bladeless fan, a hair curler and the like are pushed out, the development of the small-size axial flow fan and the high-speed direct current brushless motor in the household appliance industry is gradually started.
The smaller the size of the home appliance, the higher the requirements for details of vibration damping and noise reduction of the motor in the application scene. Most of the improvement modes in the market at present are to improve the structural size of the brushless motor and correspondingly adapt to the applicable scene of the household appliances, but neglect the design influence of combining the air guide structure. When the impeller rotates, gas axially enters the impeller from the air inlet, is pushed by blades on the impeller to raise the energy of the gas, then flows into the guide vane, and is guided to flow outwards by the guide vane, but because the impeller rotates at a high speed, the design of the angle of the impeller is matched with the design of the guide vane, the gas flowing out of the guide vane is very easy to gush intermittently, so that the air inlet smoothness of the axial guide vane is poor, and meanwhile, the gushed gas is reacted with the impeller to promote the impeller to vibrate, so that the impeller becomes one of technical problems which are difficult to overcome.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a small continuous high-speed blower and a testing mode thereof, and the blower has the advantages of linear and smooth air flow, high stability and long service life.
The technical aim of the invention is realized by the following technical scheme: the utility model provides a small-size high-speed hair-dryer of persistence and test mode thereof, includes stator module, rotate in rotor subassembly on the stator module, cover are located dryer on the stator module and install in the flabellum on the rotor, characterized by: the air duct comprises an outer cylinder and an inner cylinder which is arranged on the same center axis as the outer cylinder, and the inner cylinder is sleeved on the rotor assembly and fixed on the stator assembly;
the outer cylinder is provided with an air inlet part and an air outlet part along the length direction of the outer cylinder, the inner wall of the air inlet part is paved with an air guide pad, the air guide pad extends along the axial direction of the air cylinder, the air inlet part is close to the air outlet part and is inclined outwards to form a flaring shape, the diameter of each fan blade is slightly smaller than that of the air guide pad, the air outlet part extends outwards in a straight line, a plurality of uniformly distributed air guide blades are fixedly connected between the air outlet part and the outer cylinder, the air guide blades are arranged in a circular arc plate wing shape, the distance between adjacent air guide blades is always consistent, a curve conduction path is formed among the inner wall of the outer cylinder, the outer wall of the inner cylinder and the adjacent air guide blades, and the volumes of the adjacent paths are the same;
the inner cylinder is provided with an air inlet guide angle near one side of the fan blade, and the inclination angle of the air inlet guide angle is consistent with that of the air guide pad.
Preferably, the rotor assembly comprises a rotating shaft, a rotating bearing, a first balancing weight, a second balancing weight and an auxiliary bearing are arranged on the rotating shaft along the length direction of the rotating shaft, the first balancing weight and the second balancing weight are respectively arranged at two ends of the rotating shaft and are stably supported, the auxiliary bearing is connected with the stator assembly, the fan blade is mounted on the rotating bearing, a spring is connected between the rotating bearing and the first balancing weight, and the spring is sleeved on the rotating shaft.
Preferably, the fan blade comprises an impeller arranged on the rotary bearing and blades uniformly distributed along the circumferential direction of the impeller, the diameter of the fan blade is set to be below 25.5mm, and the diameter of the impeller is set to be below 15.5 mm;
wherein the calculation formula of centrifugal force: f= (2n) 2 mr, n is the rotation speed, m is the mass, r is the radius, and under the condition of constant rotation speed, the magnitude of the centrifugal force of the fan blade is in direct proportion to the magnitude of the radius of the fan blade.
Preferably, the inclination angle of the blade is consistent with the inclination angle of the guide blade.
Preferably, the air guide pad is made of stainless steel, is attached to the inner wall of the outer cylinder and is used for limiting the installation space of the fan blade in the air cylinder.
Preferably, the blades are mounted at an angle of inclination in the range 20 ° -30 °.
In summary, the invention has the following beneficial effects: through improving the optimal design of dryer, when reducing the windage coefficient of guide vane, can ensure the numerical value of flow size in the route, make the fluid be the linear even dryer that draws forth for the stable operation of flabellum, and through supporting auxiliary structure such as spring, bearing, wind-guiding pad, further firm flabellum's position avoids the flabellum to take place centrifugal vibration, finally reaction in the pivot, influence the rotation efficiency of pivot, also consequently very big improvement the operational environment of flabellum, the overall efficiency of fan is improved, and because the optimization of fan operational environment, the stability of fan has been promoted, the life of fan has further been promoted.
Drawings
FIG. 1 is a schematic view of the internal structure of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the present invention;
FIG. 3 is a schematic view of a wind guiding pad according to an embodiment of the present invention;
FIG. 4 is a schematic front view of a fan blade according to an embodiment of the present invention;
fig. 5 is a schematic side view of a fan blade according to an embodiment of the present invention.
Reference numerals: 1. a stator assembly; 2. a rotor assembly; 21. a rotating shaft; 22. a rotating bearing; 23. a first weight; 24. a second weight; 25. an auxiliary bearing; 26. a spring; 3. an air duct; 31. an outer cylinder; 32. an inner cylinder; 33. a wind inlet part; 34. an air outlet part; 35. an air guiding pad; 36. a guide blade; 37. a path; 38. wind inlet guide angle; 4. a fan blade; 41. an impeller; 42. and (3) a blade.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Because the structure of the axial flow fan is directly related to the pneumatic performance of the fan, the axial flow fan comprises design parameter distribution among blades, the common influence of various factors such as dynamic and static blade interference, axial and radial gaps, various vortex structures and the like, and based on the theory, the implementation provides a small continuous high-speed blower and a test mode thereof.
Referring to fig. 1, a stator assembly 1 is fixed, a rotor assembly 2 is utilized to drive a fan blade 4 to rotate at a high speed, meanwhile, through optimizing the structural design of an air duct 3, namely the air duct 3, fluid is driven by the fan blade 4 to rush into the air duct 3, higher pressure is generated in a semi-closed space formed by an outer cylinder 31 and an inner cylinder 32 arranged on the same center axis of the outer cylinder 31, the fluid enters from an air inlet part 33 of the outer cylinder 31 and is guided by an air outlet part 34 to flow into the semi-closed space, an air guide pad 35 is paved on the inner wall of the air inlet part 33, the air inlet caliber of the outer cylinder 31 is reduced through the air guide pad 35, the design proportion of the diameter of an impeller 41 and the length of a blade 42 in the fan blade 4 is matched and adjusted, the fluid flow is improved to the maximum extent, and meanwhile, the fluid entering into the air inlet part 33 obtains higher pressure through the outer cylinder 31 with the smaller air inlet caliber, so that higher power is provided for subsequent flow of the fluid.
Referring to fig. 4 and 5, the length of the vane 42 directly affects the change of the fluid flow rate at the same rotation speed, but the diameter of the impeller 41 directly affects the stability of the vane 42, so that the two components cooperate with each other, and in the case that the inner diameter of the outer cylinder 31 is determined to be 26mm, experiments are designed based on centrifugal force at the same rotation speed, and the most suitable diameter of the vane 4 is found to be l=25.5mm, and the diameter of the impeller 41 is l1=14.5mm.
Wherein the centrifugal force is calculated by F=mw 2 r, where m represents the mass of the fan blade 4, w represents the angular velocity of the fan blade 4, r represents the radius of the fan blade 4, the centrifugal force of which must not be excessive to prevent the fan blade 4 from swinging, where the angular velocity w=2n, n represents the rotational speed of the fan blade 4, where the rotational speed is determined by the rotation of the shaft 21, thereby yielding f= (2n) 2 mr also knows that the radial size of the fan 4 is proportional to the centrifugal force at the same rotation speed, and properly reduces the diameter of the fan 4 at the same rotation speed, thereby reducing the centrifugal force of the fan 4 and helping to ensure stable rotation of the fan 4.
The fluid enters the air outlet portion 34, at this time, the flow rate of the fluid needs to be properly slowed down, and the fluid of the air outlet portion 34 is ensured to be uniform and mild, that is, the subsequent air speed is ensured to be linear, uniform and smooth, and the air blowing operation can be performed when the air directly acts on a human body.
The fluid with larger power flows out from the air outlet part 34, the air inlet part 33 is inclined outwards to form a flaring shape near the air outlet part 34, the inner cylinder 32 is matched with the stator assembly 1, a guiding space is provided for the rapid flow of the fluid, a plurality of evenly distributed guide blades 36 are fixedly connected between the air outlet part 34 and the outer cylinder 31, the guiding space between the inner cylinder 32 and the outer cylinder 31 is equally divided, and the guide blades 36 are arranged in a circular arc plate wing shape, so that a curve conduction fluid circulation path 37 is formed among the inner wall of the outer cylinder 31, the outer wall of the inner cylinder 32 and the periphery of the adjacent guide blades 36.
Based on the above-mentioned outer cylinder 31 diameter determination, the provided air guiding pad 35 not only can limit the centrifugal swing of the rotation of the fan blade 4 by reducing the diameter of the air inlet of the outer cylinder 31 in the process of completing the fluid pressurization, starting from the fan blade 4 on the rotor assembly 2, the fan blade 4 is driven to rotate at a high speed by the rotating shaft 21 on the rotor assembly 2, and centrifugal force is generated during the high-speed rotation, and due to the space limitation of the air guiding pad 35, the fan blade 4 is mounted on the rotating bearing.
When the rotating shaft 21 rotates, the acting force direction of the centrifugal force always points to the center of the rotating shaft 21, and the acting force is reversely acted on the axial direction of the rotating shaft 21 through the axial component of the rotating shaft 21, so that the rotating shaft 21 is bent and deformed, namely deflection is generated, and the rotating bearings 22 at the end parts of the rotating shaft 21 and the fan blades 4 are arranged, so that the rotating shaft 21 is deformed more seriously, the fan blades 4 swing left and right, the movable space of the fan blades 4 is further limited through the air guide pad 35 under the condition that the inner diameter of the outer cylinder 31 is determined, the deflection is reduced, the efficiency is improved, and the rotating shaft 21 is a flexible shaft.
Under this condition, through being provided with swivel bearing 22, first balancing piece 23, second balancing piece 24 and auxiliary bearing 25 in the pivot 21 along self length direction, accomplish the connection installation of pivot 21 and stator module 1 by auxiliary bearing 25 and second balancing piece 24 to rely on auxiliary bearing 25 and second balancing piece 24 to synchronize to the one end of auxiliary support pivot 21, the other end carries out auxiliary support through first balancing piece 23, and first balancing piece 23, second balancing piece 24 and auxiliary bearing 25 have supported the length of a majority of pivot 21, promote the stability of pivot 21, and rely on swivel bearing 22 to install flabellum 4, simultaneously cover and establish spring 26 on pivot 21, will compress through spring 26 elasticity, promote the distance between swivel bearing 22 and the first back-up shaft invariable.
The circular arc plate airfoil guide vane 36 can effectively reduce the flow loss by encircling the outer cylinder 31 and compressing the inner cylinder 32, and the installation angles of the vanes 42 are sequentially adjusted to be 20-30 degrees based on the number of the vanes 42 of the vane 4 being 13. And equal-part tests are carried out through angles with intervals of 0.5 degrees, and the flow in the air duct 3 is observed under different angles.
In this way, to ensure a high flow in the duct 3, the blades 42 are mounted at an inclination angle ranging from 20 ° to 30 °, with an optimum angle of 29.5 °.
After the inclination angle of the blades 42 is determined, in order to reduce the windage coefficient in the wind tunnel 3, the inclination angle of the guide blades 36 is kept consistent with the inclination angle of the blades 42. Under the construction, the power, wind speed, rotating speed and noise are tested again:
note that: the wind speed is the maximum wind speed of the anemometer directly tested at the wind outlet part.
Through improving the optimal design of dryer 3, when reducing the windage coefficient of guide vane 36, can ensure the numerical value of the flow size in the route 37, make the fluid be the linear even dryer 3 of leading out for the stable operation of flabellum 4 to support auxiliary structure through spring 26, bearing, air guide pad 35 etc. further firm flabellum 4's position, avoid flabellum 4 to take place centrifugal vibration, finally react in pivot 21, influence pivot 21's rotation efficiency. Therefore, the running environment of the fan blade 4 is greatly improved, the overall efficiency of the fan is improved, and the stability of the fan is improved due to the optimization of the running environment of the fan blade 4, so that the service life of the fan is further prolonged.
The above-described embodiments are merely illustrative of the present invention and are not intended to be limiting, and modifications may be made to the embodiments by those skilled in the art without creative contribution as required after reading the present specification, but are protected by patent laws within the scope of the appended claims.
Claims (6)
1. The utility model provides a small-size high-speed hair-dryer of persistence and test mode thereof, includes stator module (1), rotate in rotor module (2) on stator module (1), cover are located dryer (3) on stator module (1) and install in flabellum (4) on the rotor, characterized by: the air duct (3) comprises an outer cylinder (31) and an inner cylinder (32) which is arranged on the same center axis as the outer cylinder (31), and the inner cylinder (32) is sleeved on the rotor assembly (2) and is fixed on the stator assembly (1);
the outer cylinder (31) is provided with an air inlet part (33) and an air outlet part (34) along the length direction of the outer cylinder, the inner wall of the air inlet part (33) is paved with an air guide pad (35), the air guide pad (35) extends along the axial direction of the air cylinder (3), the air inlet part (33) is inclined outwards to form a flaring shape near the air outlet part (34), the diameter of each fan blade (4) is slightly smaller than the diameter of the air guide pad (35), the air outlet part (34) extends outwards in a straight line, a plurality of uniformly distributed guide blades (36) are fixedly connected between the air outlet part (34) and the outer cylinder (31), the guide blades (36) are arranged in a circular arc plate wing shape, the distance between the adjacent guide blades (36) is always kept consistent, a curve conducting path (37) is formed among the inner wall of the outer cylinder (31), the outer wall of the inner cylinder (32) and the adjacent guide blades (4) (36), and the volumes of the adjacent paths (37) are the same;
an air inlet guide angle (38) is arranged on one side of the inner cylinder (32) close to the fan blades (4), and the inclination angle of the air inlet guide angle (38) is consistent with that of the air guide pad (35);
the method also comprises the following steps of:
s1, constructing a test foundation for adjustment, and selecting a plurality of air cylinders (3) with consistent inner and outer diameters, wherein the number of the fan blades (4) is set consistently, and the change setting is carried out on the installation angles of the fan blades (4), and the angle adjustment range is 20-30 degrees;
s2, recording the power, the rotating speed and the flow of the blower at the same time, and finding out the optimal installation angle of the fan blade (4);
s3, limiting the installation angle of the fan blade (4), and calculating the data of the blower power, the wind speed, the rotating speed and the noise by continuously adjusting the inlet angle of the guide fan blade (36), so as to find out the relatively proper inlet angle of the guide fan blade (36).
2. The small-sized continuous high-speed blower and the testing mode thereof according to claim 1, wherein the small-sized continuous high-speed blower is characterized in that: the rotor assembly (2) comprises a rotating shaft (21), the rotating shaft (21) is provided with a rotating shaft (21) bearing, a first balancing block (23), a second balancing block (24) and an auxiliary bearing (25) along the length direction of the rotating shaft, the first balancing block (23) and the second balancing block (24) are respectively arranged at two ends of the rotating shaft (21) and stably supported, the auxiliary bearing (25) is connected with the stator assembly (1), the fan blade (4) is mounted on the rotating shaft (21), a spring (26) is connected between the rotating shaft (21) bearing and the first balancing block (23), and the spring (26) is sleeved on the rotating shaft (21).
3. The small-sized continuous high-speed blower and the testing mode thereof according to claim 2, wherein the small-sized continuous high-speed blower is characterized in that: the fan blades (4) comprise impellers (41) arranged on the rotary shaft (21) and blades (42) uniformly distributed along the circumferential direction of the impellers (41), the diameter of the fan blades (4) is set to be below 25.5mm, and the diameter of the impellers (41) is set to be below 15.5 mm;
wherein the calculation formula of centrifugal force: f= (2n) 2 mr, n is the rotation speed, m is the mass, r is the radius, and under the condition of constant rotation speed, the magnitude of the centrifugal force of the fan blade (4) is in direct proportion to the magnitude of the radius of the fan blade (4).
4. A small persistent high-speed blower and test mode thereof according to claim 3, wherein: the inclination angle of the blade (42) is consistent with the inclination angle of the guide blade (36).
5. The small-sized continuous high-speed blower and the testing mode thereof according to claim 1, wherein the small-sized continuous high-speed blower is characterized in that: the air guide pad (35) is made of stainless steel, is attached to the inner wall of the outer cylinder (31) and is used for limiting the installation space of the fan blades (4) in the air cylinder (3).
6. The small-sized continuous high-speed blower and the testing mode thereof according to claim 4, wherein the small-sized continuous high-speed blower is characterized in that: the blades (42) are mounted at an angle of inclination in the range of 20 DEG to 30 deg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311233185.6A CN117212212A (en) | 2023-09-22 | 2023-09-22 | Small-sized continuous high-speed blower and test mode thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311233185.6A CN117212212A (en) | 2023-09-22 | 2023-09-22 | Small-sized continuous high-speed blower and test mode thereof |
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| Publication Number | Publication Date |
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| CN117212212A true CN117212212A (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311233185.6A Pending CN117212212A (en) | 2023-09-22 | 2023-09-22 | Small-sized continuous high-speed blower and test mode thereof |
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| CN (1) | CN117212212A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253614A (en) * | 1997-04-25 | 2000-05-17 | 声学设计股份有限公司 | Ducted flow hair dryer |
| CN209642498U (en) * | 2019-05-23 | 2019-11-15 | 沈宪成 | Motor for small-sized hair care electric appliance and the hair care electric appliance with it |
| CN110500307A (en) * | 2019-09-18 | 2019-11-26 | 浙江伟捷智能科技有限公司 | Noise reducing type high speed small size axial flow blower |
| CN115173629A (en) * | 2022-08-17 | 2022-10-11 | 克瑞科技(东莞)有限公司 | Brushless motor of high-speed blower |
| CN115405541A (en) * | 2022-08-29 | 2022-11-29 | 格力博(江苏)股份有限公司 | Hair drier |
-
2023
- 2023-09-22 CN CN202311233185.6A patent/CN117212212A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253614A (en) * | 1997-04-25 | 2000-05-17 | 声学设计股份有限公司 | Ducted flow hair dryer |
| CN209642498U (en) * | 2019-05-23 | 2019-11-15 | 沈宪成 | Motor for small-sized hair care electric appliance and the hair care electric appliance with it |
| CN110500307A (en) * | 2019-09-18 | 2019-11-26 | 浙江伟捷智能科技有限公司 | Noise reducing type high speed small size axial flow blower |
| CN115173629A (en) * | 2022-08-17 | 2022-10-11 | 克瑞科技(东莞)有限公司 | Brushless motor of high-speed blower |
| CN115405541A (en) * | 2022-08-29 | 2022-11-29 | 格力博(江苏)股份有限公司 | Hair drier |
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