CN215409377U - Low-noise radiating fan - Google Patents
Low-noise radiating fan Download PDFInfo
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- CN215409377U CN215409377U CN202121474292.4U CN202121474292U CN215409377U CN 215409377 U CN215409377 U CN 215409377U CN 202121474292 U CN202121474292 U CN 202121474292U CN 215409377 U CN215409377 U CN 215409377U
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Abstract
The utility model discloses a low-noise heat radiation fan, which comprises a fan motor and a fan main body, wherein the inner surface of the fan main body is provided with a noise reduction mechanism, the bottom end of the noise reduction mechanism is assembled at the top end of the fan motor, the fan main body comprises a hub disc, and 7 blades are integrally formed on the outer side of the hub disc, the utility model provides the low-noise heat radiation fan with the fan main body consisting of active noise reduction blades and the noise reduction mechanism for assisting noise reduction at the axis, when in installation, the outer magnetic block is firstly assembled on the upper surface of the fan motor by utilizing the fixed claw structure, then the inner magnetic block is assembled on the outer surface of the shaft lever, then with axostylus axostyle spiro union at fan motor's output, and then when using, utilize interior magnetic path that repulses and outer magnetic path to form magnetic suspension bearing and provide contactless support effect for axostylus axostyle department, remove mechanical friction from and assist and fall and make an uproar, the effectual big problem of heat dissipation fan blade noise that has solved current.
Description
Technical Field
The utility model relates to the technical field of automobile cooling fans, in particular to a low-noise cooling fan.
Background
The automobile heat radiation fan mainly assists automobile heat radiation through fan blade rotation, and because of popularization of new energy automobiles and improvement of comfort level requirements of consumers, the noise requirements of a host factory on the automobile heat radiation fan are gradually improved, so that reduction of the noise value of the automobile heat radiation fan at the present stage is quite necessary, the main noise source of the heat radiation fan is a blade, incomplete design of the blade can cause rotation, fine vortex flow after air cutting causes vibration of the blade, and flowing accumulated flow of the air after the air cutting can cause overlarge up-and-down amplitude of the rotation of the blade, so that the integral vibration of the fan is caused, and the noise is relatively high.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a low-noise heat dissipation fan, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: a low-noise heat dissipation fan comprises a fan motor and a fan main body, wherein a noise reduction mechanism is assembled on the inner surface of the fan main body, the bottom end of the noise reduction mechanism is assembled at the top end of the fan motor, the fan main body comprises a hub plate, 7 blades are integrally formed on the outer side of the hub plate, the noise reduction mechanism comprises a shaft rod, the shaft rod is in screwed connection with the output end of the fan motor, an inner magnetic block is assembled on the outer side of the shaft rod, and an outer magnetic block is assembled on the upper surface of a shell at the root of the output end of the fan motor.
Preferably, the outer side end of the blade is integrally formed with a guard ring, and the hub disc is assembled with an insert at the center, wherein the insert is assembled at the top end of the shaft rod.
Preferably, the bottom end of the shaft rod is provided with a screw hole opposite to the rotating direction, the inner side end of the inner magnetic block is integrally formed with a first fixing ring, the outer side section of the outer magnetic block is integrally formed with a second fixing ring, and the outer side end of the second fixing ring is integrally formed with a fixing claw.
Preferably, each two of the blades form an included angle, the sum of 7 included angles is 360 degrees, and each included angle is 51.4 degrees.
Preferably, the blade has a specific three-dimensional shape which can be described by 6 cross-sectional installation angles, wherein the section radii D1, D2, D3, D4, D5 and D6 are 70mm, 85mm, 100mm, 115mm, 130mm and 145mm, respectively, the installation angle a1 is 52 °, the installation angle a2 is 51 °, the installation angle A3 is 48 °, the installation angle a4 is 44 °, the installation angle a5 is 40 ° and the installation angle A6 is 34 °.
Preferably, the blade has a specific three-dimensional shape, which can be described by the chord length and the inclination angle of 6 cross sections with the section radius of D1, D2, D3, D4, D5 and D6, and the chord length (L1, L2, L3, L4, L5 and L6) and the axial height (H1, H2, H3, H4, H5 and H6) are as follows: l1 and H1 are respectively 37.3mm and 21.5 mm; l2 and H2 are 41.2mm and 19.9mm respectively; l3 and H3 are respectively 45.5mm and 19.2 mm; l4 and H4 are respectively 51.3mm and 19 mm; l5 and H5 are respectively 60.3mm and 20.5 mm; l6 and H6 are respectively 75.6mm and 23.5 mm.
Compared with the prior art, the utility model has the beneficial effects that: when the low-noise heat dissipation fan is installed, firstly, the outer magnetic block is assembled on the upper surface of the fan motor by using a fixed claw structure, then, the inner magnetic block is assembled on the outer surface of the shaft lever, then, the shaft lever is in threaded connection with the output end of the fan motor, and further, when the low-noise heat dissipation fan is used, a magnetic suspension bearing is formed by the repellent inner magnetic block and the outer magnetic block to provide a non-contact supporting effect for the shaft lever, mechanical friction is omitted for assisting noise reduction, and the problem of high heat dissipation noise of the conventional fan blade is effectively solved.
Drawings
FIG. 1 is an assembly schematic of the present invention.
Fig. 2 is a schematic view of the cutting assembly of the noise reduction mechanism of the present invention.
FIG. 3 is a schematic view of the corresponding installation angle measurement positions of the blade with the section radii D1, D2, D3, D4, D5 and D6.
Fig. 4 is a top view of the present invention.
Fig. 5-10 are cross-sectional illustrations of chord length (L1, L2, L3, L4, L5, L6) and axial height (H1, H2, H3, H4, H5, H6) at the location of the cross-sectional radii D1, D2, D3, D4, D5, D6 of the inventive blade.
In the figure: 1. the fan comprises a fan body, 11, a protective ring, 12, blades, 13, a hub plate, 14, an insert, 2, a noise reduction mechanism, 21, a shaft rod, 22, a screw hole, 23, a first fixing ring, 24, an inner magnetic block, 25, a fixing claw, 26, a second fixing ring, 27 and an outer magnetic block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, the present invention provides a technical solution: a low-noise heat dissipation fan comprises a fan motor and a fan main body 1, wherein a noise reduction mechanism 2 is assembled on the inner surface of the fan main body 1, the bottom end of the noise reduction mechanism 2 is assembled at the top end of the fan motor, the fan main body 1 comprises a hub plate 13, 7 blades 12 are integrally formed on the outer side of the hub plate 13, the noise reduction mechanism 2 comprises a shaft rod 21, the shaft rod 21 is in threaded connection with the output end of the fan motor, an inner magnetic block 24 is assembled on the outer side of the shaft rod 21, an outer magnetic block 27 is assembled on the upper surface of a root shell of the output end of the fan motor,
the utility model provides a low-noise heat radiation fan with a fan main body 1 consisting of active noise reduction blades 12 and a noise reduction mechanism 2 for assisting noise reduction at an axis, when in installation, firstly, an outer magnetic block 27 is assembled on the upper surface of a fan motor by using a fixed claw 25 structure, then, an inner magnetic block 24 is assembled on the outer surface of a shaft lever 21, then, the shaft lever 21 is screwed on the output end of the fan motor, and further, when in use, a magnetic suspension bearing is formed by using the inner magnetic block 24 and the outer magnetic block 27 which are mutually repellent to provide a non-contact supporting effect for the shaft lever, mechanical friction is avoided for assisting noise reduction, and the problem of high noise of the existing heat radiation fan blades is effectively solved.
Specifically, the outside end of blade 12 integrated into one piece has guard circle 11, and the center department of hubcap 13 is equipped with inserts 14, and inserts 14 assembles the top at axostylus axostyle 21, utilizes inserts 14 to inside extension, improves the area of contact with axostylus axostyle 21 surface, and then improves the stability of connecting, and guard circle 11 then strengthens overall structure intensity, protects the blade.
Specifically, the bottom end of the shaft rod 21 is provided with a screw hole 22 opposite to the rotating direction, the inner side end of the inner magnetic block 24 is integrally formed with a first fixing ring 23, the outer side section of the outer magnetic block 27 is integrally formed with a second fixing ring 26, and the outer side end of the second fixing ring 26 is integrally formed with a fixing claw 25.
Specifically, each two blades 12 form an included angle, 7 included angles and 360 degrees are formed, and each included angle is 51.4 degrees.
Specifically, the blade 12, has a specific three-dimensional shape that can be described by 6 cross-sectional mounting angles, wherein the cross-sectional radii D1, D2, D3, D4, D5, D6 are 70mm, 85mm, 100mm, 115mm, 130mm, 145mm, respectively, the mounting angle a1 is 52 °, the mounting angle a2 is 51 °, the mounting angle A3 is 48 °, the mounting angle a4 is 44 °, the mounting angle a5 is 40 °, and the mounting angle A6 is 34 °.
In particular, the blade 12, having a specific three-dimensional shape, can be described by the chord length and the inclination of 6 cross-sections with section radii D1, D2, D3, D4, D5, D6, with chord length (L1, L2, L3, L4, L5, L6) and axial height (H1, H2, H3, H4, H5, H6): l1 and H1 are respectively 37.3mm and 21.5 mm; l2 and H2 are 41.2mm and 19.9mm respectively; l3 and H3 are respectively 45.5mm and 19.2 mm; l4 and H4 are respectively 51.3mm and 19 mm; l5 and H5 are respectively 60.3mm and 20.5 mm; l6, H6 is 75.6mm respectively, 23.5mm, blade 12 through above data model, can reduce the vibrations of blade 12 self when rotating, and can reach better air current mediation effect, in time arrange the fan outside with the air current of stirring, and then avoid the air current to be caused the air current by another piece of blade cutting once more after being cut by a piece of blade 12 and pile up the long-pending stream that causes, reduce the vibrations on the blade 12 rotation amplitude, thereby reach the purpose of making an uproar.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a low noise radiator fan, includes fan motor and fan main part (1), its characterized in that: the fan comprises a fan body (1), wherein a noise reduction mechanism (2) is assembled on the inner surface of the fan body (1), the bottom end of the noise reduction mechanism (2) is assembled at the top end of a fan motor, the fan body (1) comprises a hub plate (13), 7 blades (12) are integrally formed on the outer side of the hub plate (13), the noise reduction mechanism (2) comprises a shaft rod (21), the shaft rod (21) is in threaded connection with the output end of the fan motor, an inner magnetic block (24) is assembled on the outer side of the shaft rod (21), and an outer magnetic block (27) is assembled on the upper surface of a shell at the root of the output end of the fan motor.
2. A low-noise heat dissipating fan as claimed in claim 1, wherein: the outer side end of the blade (12) is integrally formed with a protective ring (11), an insert (14) is assembled at the center of the hub disc (13), and the insert (14) is assembled at the top end of the shaft rod (21).
3. A low-noise heat dissipating fan as claimed in claim 1, wherein: the magnetic bearing is characterized in that the bottom end of the shaft lever (21) is provided with a screw hole (22) opposite to the rotating direction, a first fixing ring (23) is integrally formed at the inner side end of the inner magnetic block (24), a second fixing ring (26) is integrally formed at the outer side section of the outer magnetic block (27), and a fixing claw (25) is integrally formed at the outer side end of the second fixing ring (26).
4. A low-noise heat dissipating fan as claimed in claim 1, wherein: every two blades (12) form an included angle, the sum of 7 included angles is 360 degrees, and each included angle is 51.4 degrees.
5. A low noise heat dissipating fan in accordance with claim 4, wherein: the blade (12) has a specific three-dimensional shape which can be described by 6 cross-sectional installation angles, wherein the section radiuses D1, D2, D3, D4, D5 and D6 are respectively 70mm, 85mm, 100mm, 115mm, 130mm and 145mm, the installation angle A1 is 52 degrees, the installation angle A2 is 51 degrees, the installation angle A3 is 48 degrees, the installation angle A4 is 44 degrees, the installation angle A5 is 40 degrees and the installation angle A6 is 34 degrees.
6. A low noise heat dissipating fan as claimed in claim 5, wherein: the blade (12) has a specific three-dimensional shape which can be described by the chord length and the inclination angle of 6 cross sections with the section radius of D1, D2, D3, D4, D5 and D6, and the chord length (L1, L2, L3, L4, L5 and L6) and the axial height (H1, H2, H3, H4, H5 and H6) are as follows: l1 and H1 are respectively 37.3mm and 21.5 mm; l2 and H2 are 41.2mm and 19.9mm respectively; l3 and H3 are respectively 45.5mm and 19.2 mm; l4 and H4 are respectively 51.3mm and 19 mm; l5 and H5 are respectively 60.3mm and 20.5 mm; l6 and H6 are respectively 75.6mm and 23.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121474292.4U CN215409377U (en) | 2021-07-01 | 2021-07-01 | Low-noise radiating fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121474292.4U CN215409377U (en) | 2021-07-01 | 2021-07-01 | Low-noise radiating fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215409377U true CN215409377U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121474292.4U Active CN215409377U (en) | 2021-07-01 | 2021-07-01 | Low-noise radiating fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215409377U (en) |
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2021
- 2021-07-01 CN CN202121474292.4U patent/CN215409377U/en active Active
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