CN108119397B - Fan wheel balance structure - Google Patents
Fan wheel balance structure Download PDFInfo
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- CN108119397B CN108119397B CN201810123305.XA CN201810123305A CN108119397B CN 108119397 B CN108119397 B CN 108119397B CN 201810123305 A CN201810123305 A CN 201810123305A CN 108119397 B CN108119397 B CN 108119397B
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- hub
- fan wheel
- top wall
- balance structure
- unbalanced
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- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
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- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/662—Balancing of rotors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a fan wheel balance structure, comprising a hub and a plurality of blades arranged on the peripheral side of the hub, wherein the hub is provided with a top wall connected with a side wall, and an unbalance removing part is selectively arranged on the top wall or the side wall and is positioned on one side of a symmetrical axis of the hub so as to balance the weight of the fan wheel.
Description
Technical Field
The present invention relates to a fan wheel balancing structure, and more particularly, to a fan wheel balancing structure capable of rapidly balancing a fan wheel and shortening balancing time.
Background
With the development of computer technology, when the operation clock and performance of the internal components of the computer are gradually increased, the power consumption and heat generated by the internal components of the computer are higher, and in order to reduce the internal temperature of the housing and help heat dissipation, a high-performance heat dissipation mechanism is required to help remove the heat generated by the internal components of the housing, so as to avoid the situation that the internal components are in a high-temperature state to affect the service life of the internal components or cause unstable operation. In the field of heat dissipation of the whole system, the heat dissipation system composed of a fan and a heat sink is still the mainstream of cooling computers in the industry, and the fan, whether an axial fan, a centrifugal fan or a mixed flow fan, is mainly selected by matching with the heat sink to solve the overheating of the system or help to remove the heat generated by the internal parts of the casing.
The principle of the fan for generating wind is not limited to the wing shape design of the fan blades on the fan wheel, the fan wheel is driven by the motor and the circuit board to rotate at a rated speed, and airflow passes through the designed wing-shaped blades to turn and do work to generate thrust to generate wind. The rotating member (impeller) is required to be balanced by a fan impeller dynamic balancing machine, for example, after a calibration test is performed in advance, the impeller can be rotated smoothly, so as to avoid generating unnecessary vibration and deriving additional noise and influencing the structure to shorten the service life of the fan. Therefore, the smaller the size of the fan is, the more important the vibration of the fan becomes in the conventional fan structure. However, since the vibration level is required to be high due to the small size and light weight, the balancing operation thereof becomes extremely difficult. In order to achieve the required vibration level specification, the balancing soil is repeatedly supplemented until the convergence reaches the specification because the gram weight of the required balancing soil is too small (such as milligrams), so that the time for extending the balancing and correcting fan wheel needs longer time to obtain better balancing quality, and a large amount of manpower and balancing equipment need to be invested to maintain equivalent capacity, thereby causing the problems of increased production cost and overlong balancing time.
At present, regarding the operation of the fan wheel dynamic balance correction test, at the stage of manual operation, the worker performs the balance correction of manual balancing (i.e. compensation balance) or manual de-weighting (i.e. balance reduction) according to the rough test result and the unbalanced point position of the projection light on the fan wheel, for example, after the worker visually observes the unbalanced point position roughly projected on the fan wheel, and when the whole fan wheel is taken away from the fan wheel dynamic balancing machine for balancing or de-weighting, the unbalanced point position of the projection light on the fan wheel is not existed, so the unbalanced point position of the fan wheel can be roughly recorded by the eye force of the worker, and then the fan wheel is weighted or de-weighted, therefore, in order to complete the dynamic balance correction of one fan wheel, the worker usually needs to repeat the test and the balancing or de-weighting process many times, so as to face the low production efficiency, The balance precision is not high.
Disclosure of Invention
The present invention provides a fan wheel balancing structure for achieving fast fan wheel balance.
Another objective of the present invention is to provide a fan wheel balance structure, wherein an unbalanced portion for removing is integrally formed on the top wall or the side wall and located on one side of a symmetric axis of the hub, so that the weight of the entire unbalanced portion can be accurately removed, and the fan wheel can be balanced, thereby effectively reducing the number of balancing operations and reducing the number of balancing man-hours.
Another objective of the present invention is to provide a fan wheel balance structure that can save labor hours and further reduce cost.
To achieve the above objective, the present invention provides a fan wheel balance structure, which includes a hub and a plurality of blades disposed on the outer periphery of the hub, wherein the hub has a top wall connected to a side wall, and an unbalance portion for removing is disposed on the top wall or the side wall and located on one side of a symmetry axis of the hub, so as to balance the weight of the fan wheel.
The fan impeller balance structure of the fan, wherein: the unbalanced part is integrally formed and convexly arranged on one outer side surface of the top wall of the hub for removal, and the outer side surface of the top wall of the hub on one side of the symmetry axis of the hub is asymmetrical with the outer side surface of the top wall of the hub on the other side corresponding to the symmetry axis of the hub.
The fan impeller balance structure of the fan, wherein: the unbalanced part is integrally formed and convexly arranged on one inner side surface of the top wall of the hub for removal, and the inner side surface of the top wall of the hub on one side of the symmetry axis of the hub is asymmetrical with the inner side surface of the top wall of the hub on the other side corresponding to the symmetry axis of the hub.
The fan impeller balance structure of the fan, wherein: the unbalanced part is integrally formed and convexly arranged on one outer side surface of the side wall of the hub for removal, and the outer side surface of the side wall of the hub on one side of the symmetry axis of the hub is asymmetrical with the outer side surface of the side wall of the hub on the other side corresponding to the symmetry axis of the hub.
The fan impeller balance structure of the fan, wherein: the unbalanced part is integrally formed and convexly arranged on one inner side surface of the side wall of the hub for removal, and the inner side surface of the side wall of the hub on one side of the symmetry axis of the hub is asymmetrical with the inner side surface of the side wall of the hub on the other side corresponding to the symmetry axis of the hub.
The fan impeller balance structure of the fan, wherein: the unbalanced portion is a convex body.
The fan impeller balance structure of the fan, wherein: the unbalanced portion has a square, rectangular, circular, half-moon, semicircular, honeycomb-like, or conical shape.
The fan impeller balance structure of the fan, wherein: the axis of symmetry of the hub is a virtual straight line perpendicular to the sidewall surface and passing through the center point of the hub.
The fan impeller balance structure of the fan, wherein: the top wall and the side wall define a containing space together, a magnetic part is contained in the inner side of the side wall of the containing space, and an axle rod is inserted in the inner side of the top wall opposite to the hub.
Compared with the prior art, the invention has the beneficial effects that: through the design of the balance structure, the invention effectively shortens the balance working time and also effectively achieves the effect of quickly balancing the fan wheel of the fan.
Drawings
Fig. 1A and 1B are schematic perspective views of an unbalanced portion formed and removed in a first mode of an embodiment of an unbalanced portion of a fan wheel according to the present invention.
Fig. 2A and 2B are schematic perspective views of an unbalanced portion formed and removed in another embodiment of a first aspect of an unbalanced portion of a fan wheel according to the present invention.
Fig. 3A and 3B are schematic perspective views of an unbalanced portion formed and removed in another embodiment of a first aspect of an unbalanced portion of a fan wheel according to the present invention.
Fig. 4A and 4B are schematic perspective views of an unbalanced portion formed and removed in another embodiment of a first aspect of an unbalanced portion of a fan wheel according to the present invention.
Fig. 5A and 5B are schematic perspective views of an unbalanced portion formed and removed in another embodiment of a first aspect of an unbalanced portion of a fan wheel according to the present invention.
Fig. 6A and 6B are schematic perspective views of an unbalanced portion formed and removed in a second mode of an embodiment of an unbalanced portion of a fan wheel according to the present invention.
Fig. 7A and 7B are schematic perspective views of an unbalanced portion formed and removed in another embodiment of a second aspect of an unbalanced portion of a fan wheel according to the present invention.
Description of reference numerals: fan wheel balancing structures … 1; a hub … 111; a top wall … 1111; outboard surface … 1111 a; inner side surface … 1111 b; side walls … 1112; outboard surface … 1112 a; inner side surface … 1112 b; an accommodating space … 112; the vanes … 113; magnetic members … 115; axle pin … 116; an unbalanced portion … 117; axis of symmetry … SA.
Detailed Description
The above objects, together with the structural and functional features thereof, are accomplished by the preferred embodiments according to the accompanying drawings.
The present invention relates to a fan wheel balance structure of fan. Fig. 1A and 1B are perspective views illustrating a first aspect of an unbalanced portion of a fan wheel according to the present invention. As shown in the drawings, the fan wheel balance structure 1 of the present invention includes a hub 111, a magnetic member 115, an axial rod 116 and a plurality of blades 113, the hub 111 is made of plastic material in this embodiment, but not limited thereto, and may be made of metal material in the specific implementation, the blades 113 are disposed around the outer periphery of the hub 111, the hub 111 has a top wall 1111 and a side wall 1112, one end of the side wall 1112 is connected to the outer periphery of the top wall 1111, the side wall 1112 and the top wall 1111 define an accommodation space 112 together, the magnetic member 115 is a magnet accommodated in the inner side of the side wall 1112 in the accommodation space 112, and the axial rod 116 is inserted into the center of the inner side of the top wall 1111 of the hub 111 in the accommodation space 112. An unbalance portion 117 for removing is selectively disposed on the top wall 1111 or the side wall 1112 and is located on one side or the other side of a symmetry axis SA of the hub 111, and in the practical implementation of the present invention, an injection mold (e.g. plastic injection mold; not shown) is utilized to have an unbalance portion 117 (e.g. convex body) located on one side (or the other side) of the symmetry axis SA of a hub 111 of a fan wheel to be injected, and then the unbalance portion 117 is integrally injection-molded on the top wall 1111 or the side wall 1112 of the hub 111 of the fan wheel through the injection mold.
Please refer to fig. 1A and fig. 1B, which are schematic perspective views of a first aspect of an unbalanced portion of a fan wheel according to the present invention. As shown in the drawings, the unbalanced portion 117 of the present invention is shown as a convex body and is, for example, square, and the unbalanced portion 117 is integrally injection molded on an outer side surface 1111a of the top wall 1111 of the hub 111 by the aforementioned injection mold and is located on one side or the other side of the symmetry axis SA of the hub 111, and the outer side surface 1111a of the top wall 1111 of the hub 111 on one side of the symmetry axis SA of the hub 111 and the outer side surface 1111a of the top wall 1111 of the hub 111 on the other side corresponding to the symmetry axis SA of the hub 111 are asymmetric, in other words, the outer side surfaces 1111a of the top wall of the hub 111 on both sides of the symmetry axis SA of the hub 111 are asymmetric. Wherein the axis of symmetry SA of the hub 111 is a virtual straight line perpendicular to the surface of the sidewall 1112 and passing through the center point of the hub 111.
The amount of weight and structural form (such as convex structure) and shape (such as square or other shape) of the unbalanced portion 117 on the hub 111 of the fan wheel to be ejected are known in advance, so that the worker can remove the entire part of the unbalanced portion 1117 by a machining method (such as drill and milling cutter) directly according to the amount of weight of the unbalanced portion 117 to achieve the purpose of fast balancing operation of the fan wheel.
Therefore, by the structural design of the hub 111 of the fan wheel integrally injection-molded according to the present invention having the unbalanced portion 117 (e.g., the convex body), the unbalanced amount of the whole fan wheel after injection molding is always located in the unbalanced portion 117, so that the worker can directly know the position to remove the unbalanced portion and the weight of the unbalanced portion 117 to effectively achieve the effect of fast balancing the fan wheel and saving the cost, and further effectively achieve the effect of reducing the balancing times.
In one embodiment, referring to fig. 2A and 2B, the unbalanced portion 117 is convex and has a half-moon shape. In another embodiment, referring to fig. 3A and 3B, the unbalanced portion 117 is convex and has a honeycomb shape. In another embodiment, referring to fig. 4A and 4B, the unbalanced portion 117 is convex and has a tapered shape.
In an alternative embodiment, referring to fig. 5A and 5B, the unbalanced portion 117 is a half-moon shaped protrusion integrally formed to protrude from an inner side surface 1111B of the top wall 1111 of the hub 111 for removal and located at one side of the axis of symmetry SA of the hub 111, and the inner side surface 1111B of the top wall 1111 of the hub 111 at one side of the axis of symmetry SA of the hub 111 is asymmetrical with the inner side surface 1111B of the top wall 1111 of the hub 111 at the other side corresponding to the axis of symmetry SA of the hub 111.
Please refer to fig. 6A and fig. 6B, which are schematic perspective views of a second embodiment of an unbalanced portion of a fan wheel according to the present invention. As shown in the drawings, the unbalanced part 117 of the present invention is a convex body in a semicircular shape, which is integrally formed to protrude on the outer side surface 1112a of the side wall 1112 of the hub 111 for removal, and is located at one side of the symmetry axis SA of the hub 111, and the outer side surface 1112a of the side wall 1112 of the hub 111 at one side of the symmetry axis SA of the hub 111 is asymmetric with the outer side surface 1112a of the side wall 1112 of the hub 111 at the other side corresponding to the symmetry axis SA of the hub 111. Wherein the axis of symmetry SA of the hub 111 is a virtual straight line perpendicular to the surface of the sidewall 1112 and passing through the center point of the hub 111.
The fan wheel balancing operation of the second aspect of the present embodiment is substantially the same as the fan wheel balancing operation of the first aspect, and the description of the same parts is omitted here, and the second aspect of the present embodiment mainly includes that the unbalanced portion 117 protrudes from the outer surface 1112a of the sidewall 1112 of the hub 111 formed by the injection mold through the integral injection molding, and then the entire portion of the unbalanced portion 117 is removed by a mechanical processing method (such as a drill and a milling cutter), so that the fan wheel achieves the purpose of rapid balanced operation.
In an alternative embodiment, referring to fig. 7A and 7B, the unbalanced portion 117 is instead designed as a substantially rectangular protrusion integrally formed to protrude from an inner side surface 1112B of the sidewall 1112 of the hub 111 for removal and located on one side of the axis of symmetry SA of the hub 111, and the inner side surface 1112B of the sidewall 1112 of the hub 111 on one side of the axis of symmetry SA of the hub 111 is asymmetric with the inner side surface 1112B of the sidewall 1112 of the hub 111 on the other side corresponding to the axis of symmetry SA of the hub 111.
In addition, the shape of the unbalanced portion 117 in each of the above embodiments is not limited to the above-mentioned aspect, and in the specific implementation, the shape of the unbalanced portion 117 in which the convex body is formed may be designed to be any one of a square shape, a rectangular shape, a circular shape, a semicircular shape, a crescent shape, a conical shape, a honeycomb lattice shape, and a geometric shape.
Claims (9)
1. A balance structure of fan wheel is composed of a hub with a top wall connected to a side wall, and multiple blades arranged on the external circumference of said hub, a known unbalance part integrally formed on said top wall or said side wall and positioned at one side of a symmetrical axis of said hub for balancing the weight of fan wheel,
wherein the total unbalance amount of the hub, which is predetermined to be integrally injection-molded unbalanced, is a predetermined increased number of weights of the unbalance portion and falls within the unbalance portion on one side of the axis of symmetry.
2. The fan wheel balance structure of claim 1, wherein: the unbalanced part is integrally formed and convexly arranged on one outer side surface of the top wall of the hub for removal, and the outer side surface of the top wall of the hub on one side of the symmetry axis of the hub is asymmetrical with the outer side surface of the top wall of the hub on the other side corresponding to the symmetry axis of the hub.
3. The fan wheel balance structure of claim 1, wherein: the unbalanced part is integrally formed and convexly arranged on one inner side surface of the top wall of the hub for removal, and the inner side surface of the top wall of the hub on one side of the symmetry axis of the hub is asymmetrical with the inner side surface of the top wall of the hub on the other side corresponding to the symmetry axis of the hub.
4. The fan wheel balance structure of claim 1, wherein: the unbalanced part is integrally formed and convexly arranged on one outer side surface of the side wall of the hub for removal, and the outer side surface of the side wall of the hub on one side of the symmetry axis of the hub is asymmetrical with the outer side surface of the side wall of the hub on the other side corresponding to the symmetry axis of the hub.
5. The fan wheel balance structure of claim 1, wherein: the unbalanced part is integrally formed and convexly arranged on one inner side surface of the side wall of the hub for removal, and the inner side surface of the side wall of the hub on one side of the symmetry axis of the hub is asymmetrical with the inner side surface of the side wall of the hub on the other side corresponding to the symmetry axis of the hub.
6. The fan wheel balance structure of claim 1, wherein: the unbalanced portion is a convex body.
7. The fan wheel balance structure of claim 1, wherein: the unbalanced portion has a square, rectangular, circular, half-moon, semicircular, honeycomb-like, or conical shape.
8. The fan wheel balance structure of claim 1, wherein: the axis of symmetry of the hub is a virtual straight line perpendicular to the sidewall surface and passing through the center point of the hub.
9. The fan wheel balance structure of claim 1, wherein: the top wall and the side wall define a containing space together, a magnetic part is contained in the inner side of the side wall of the containing space, and an axle rod is inserted in the inner side of the top wall opposite to the hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810123305.XA CN108119397B (en) | 2018-02-07 | 2018-02-07 | Fan wheel balance structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810123305.XA CN108119397B (en) | 2018-02-07 | 2018-02-07 | Fan wheel balance structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108119397A CN108119397A (en) | 2018-06-05 |
| CN108119397B true CN108119397B (en) | 2020-08-04 |
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| CN201810123305.XA Active CN108119397B (en) | 2018-02-07 | 2018-02-07 | Fan wheel balance structure |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206851A (en) * | 2019-05-03 | 2019-09-06 | 武汉理工大学 | A kind of the dynamic balancing technics method and combined moving balance clip of Carbon Fiber Composite Propeller Shaft pipe |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7063507B2 (en) * | 2004-05-05 | 2006-06-20 | Hsieh Hsin-Mao | Balance adjusted fan |
| TWM299230U (en) * | 2006-01-27 | 2006-10-11 | Asia Vital Components Co Ltd | Structure for adjusting balance of fan |
| JP2009250158A (en) * | 2008-04-09 | 2009-10-29 | Nippon Densan Corp | Bower fan |
| CN201433942Y (en) * | 2009-04-24 | 2010-03-31 | 奇鋐科技股份有限公司 | Fan blade balance structure |
| CN207864250U (en) * | 2018-02-07 | 2018-09-14 | 奇鋐科技股份有限公司 | Fan impeller balanced structure |
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| CN108119397A (en) | 2018-06-05 |
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