TWI676101B - Fan fan wheel balance structure - Google Patents

Abstract

The invention provides a fan fan wheel balancing structure, which includes a hub and a plurality of blades arranged on the outer peripheral side of the hub. The hub has a top wall connected to a side wall, and an unbalanced portion is optionally provided on the top wall or the top wall. The side wall is located on one side of a symmetrical axis of the hub to balance the weight of the fan wheel.

Description

Fan wheel balance structure

The invention relates to a balance structure of a fan wheel, in particular to an effect that can quickly balance the fan wheel and shorten the balancing man-hour.

With the development of computer technology, when the internal clocks and performance of computer internal components gradually increase, the power consumption and heat generated by internal computer components will also increase. In order to reduce the internal temperature of the case and help heat dissipation, high-efficiency The heat dissipation mechanism helps to eliminate the heat generated by the internal parts of the case, so as to avoid the case where the inside of the case is at a high temperature, which affects the life of the internal parts or generates unstable operation. In the field of overall system cooling, the industry currently still generally adopts a cooling system composed of fans and heat sinks to become the mainstream of cooling computers. The fans, whether axial fans, centrifugal fans or mixed flow fans, are equipped with heat sinks to solve the system. Overheating or helping to dissipate heat generated by parts inside the case is the main choice.

The principle of the fan generating wind is nothing more than the fan blade wing design on the fan wheel. The fan wheel is driven by the motor and the circuit board to make the fan wheel rotate at the rated speed, and the air flow flows through the wing blades designed to turn. Work causes thrust and wind. The rotating rotating parts (fan wheels) need to be adjusted by, for example, a fan fan wheel balancing machine to achieve balance before the fan wheels can rotate smoothly, so as to avoid unnecessary vibration and generate additional noise and effects. The structure shortens the fan life. So under the traditional fan structure, the wind The smaller the fan size, the more important its fan vibration is. However, because of its small size and light weight, the vibration level is very high, so the relative balancing work has become extremely difficult. And in order to achieve the required vibration level specification, often because the gram weight of the required balance soil is too small (for example, milligrams) is difficult to control, the balance soil is replenished until the convergence reaches the specification. Longer time to get better balance quality, and need to invest a lot of manpower and balance equipment to maintain a considerable capacity, so that the problem of increased production costs and long balance man hours.

At present, the operation of the fan wheel dynamic balance correction test is still in the stage of manual operation. The staff performs manual weighting (that is, to compensate the balance) based on the rough test results and the position of the unbalance point of the projected light on the fan wheel. Or manual deduplication (that is, debalance) balance correction. For example, after the staff has roughly projected the imbalance point on the fan wheel through their eyes, the entire fan wheel is lifted away from the fan wheel balancing machine. When the counterweight or de-weighting is balanced, at this time, the above-mentioned projected light on the fan wheel no longer reflects the position of the imbalance point, so only the eyesight of the staff can vaguely remember the position of the fan wheel's imbalance point, and then the fan wheel Weight or deduplication processing, so to complete the dynamic balance correction of a fan wheel, it is often necessary to repeat multiple tests and counterweight or deduplication processing, resulting in the problem of low production efficiency and low balance accuracy.

It is an object of the present invention to provide a fan fan wheel balancing structure that achieves rapid fan fan wheel balancing.

Another object of the present invention is to provide an unbalanced part for integral removal, which is provided on the top wall or the side wall and is located on one side of a symmetrical axis of the hub, so that the entire unbalanced part can be accurately removed. The weight of the part makes the fan wheel balance, thereby effectively achieving a fan wheel balance structure that reduces the number of balancing times and shortens the balancing man-hour effect.

Another object of the present invention is to provide a fan wheel balance structure which can save man-hours and effectively reduce costs.

In order to achieve the above object, the present invention provides a balance structure of a fan wheel, which includes a hub and a plurality of blades arranged on the outer peripheral side of the hub. The hub has a top wall connected to a side wall, and an unbalanced system option for removal. It is arranged on either the top wall or the side wall and is located on one side of a symmetrical axis of the hub to balance the weight of the fan wheel; the design of the balancing structure of the present invention makes it possible to effectively shorten the balancing work. Time, and also effectively achieve the effect of quickly balancing the fan wheel.

1‧‧‧Fan wheel balance structure

111‧‧‧ Wheel

1111‧‧‧Top Wall

1111a‧‧‧outer surface

1111b‧‧‧ inside surface

1112‧‧‧ sidewall

1112a‧‧‧outer surface

1112b‧‧‧ inside surface

112‧‧‧accommodation space

113‧‧‧ Blade

115‧‧‧ magnetic parts

116‧‧‧ Shaft

117‧‧‧Imbalance

SA‧‧‧ symmetry axis

FIG. 1 is a schematic perspective view of a first aspect of an unbalanced portion of a fan wheel according to the present invention.

FIG. 2A is a schematic perspective view of another implementation of the first aspect of the unbalanced portion of the fan wheel of the present invention.

FIG. 2B is a schematic perspective view of the first embodiment and the other embodiment of the unbalanced part of the fan wheel according to the present invention.

FIG. 2C is a schematic perspective view of the first embodiment and the other embodiment of the unbalanced part of the fan wheel according to the present invention.

FIG. 2D is a schematic perspective view of the first embodiment and the other embodiment of the unbalanced part of the fan wheel of the present invention.

FIG. 3 is a schematic perspective view of a second aspect of an unbalanced portion of a fan wheel according to the present invention.

FIG. 4 is a schematic perspective view of another implementation of the second aspect of the unbalanced part of the fan wheel of the present invention.

The above-mentioned object of the present invention and its structural and functional characteristics will be described based on the preferred embodiments of the drawings.

The invention relates to a balance structure of a fan wheel. FIG. 1 is a schematic perspective view of a first aspect of an unbalanced portion of a fan wheel according to the present invention. As shown in the figure, the fan wheel balance structure 1 of the present invention includes a hub 111, a magnetic member 115, a shaft rod 116, and a plurality of blades 113. The hub 111 is shown in this embodiment as being made of plastic material, and is not Limited to this, in specific implementation, it can also be made of metal material. The blades 113 are arranged on the outer peripheral side 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 is in common with the top wall 1111 Also defining an accommodating space 112, the magnetic piece 115 is a magnet housed inside the side wall 1112 opposite to the accommodating space 112, and the shaft rod 116 is inserted into the hub 111 in the accommodating space 112 On the inner center of the top wall 1111. An unbalanced part 117 for removal is selectively provided on the top wall 1111 or the side wall 1112, and is located on one side or the other of a symmetrical axis SA of the hub 111. In practice, the present invention uses an injection mold (Such as a plastic injection mold; not shown) is provided with an unbalanced part 117 (such as a convex body) located on one side (or the other side) of the axis of symmetry SA of a hub 111 of a fan wheel to be injected, and then passes through The unbalanced portion 117 is formed on the top wall 1111 or the side wall 1112 of the hub 111 of the fan wheel integrally molded by the injection mold.

Please continue to refer to FIG. 1, which is a schematic perspective view of a first embodiment of an unbalanced part of a fan wheel of the present invention. As shown in the figure, the unbalanced part 117 of the present invention is shown as a convex body and is, for example, a square, and in this embodiment, the unbalanced part 117 is integrally formed on the top wall 1111 of the hub 111 by using the aforementioned injection mold for integral injection molding. One of the outer surfaces 1111a is located on one or the other side of the axis of symmetry SA of the hub 111, and the hub 111 on the side of the axis of symmetry SA of the hub 111 has an outer side surface 1111a of the upper top wall 1111 corresponding to the hub On the other side of the axis of symmetry 111 of the wheel 111, the outer surface 1111a of the upper top wall 1111 of the wheel 111 is asymmetric, in other words, the wheel 111 on both sides of the axis of symmetry SA of the wheel 111 has the upper surface 1111 a Asymmetrical design. The axis of symmetry SA of the hub 111 is a virtual straight line perpendicular to the surface of the side wall 1112 and passes through the center point of the hub 111.

And because the staff has learned in advance that the increased weight of the unbalanced part 117 on the hub 111 of the fan wheel to be ejected is set, the structural shape (such as a convex structure) and the shape (such as a square or other shape), The worker can directly remove the entire part of the unbalanced part 1117 through a mechanical processing method (such as a drill or a milling cutter) according to the set weight of the unbalanced part 117, so that the fan wheel can achieve the purpose of rapid balanced operation. For example, a worker displays a display screen on the injection mold (not shown in the figure; (such as an LCD screen) The above display shows that the unbalanced portion 17 of the hub 111 of the fan fan wheel that has been injection-molded is set in advance as a weight that is 6.005 grams (g). At this time, the worker removes the entire convex body through the mechanical processing method. (Such as 6.005 grams) to balance the weight of the fan wheel, so that the staff can complete the fan wheel balancing operation (also known as fan fan material reduction balancing operation) at one time, and also effectively shorten the balance Working hours, speed up the balance and achieve the required vibration level.

Therefore, with the structure design of the fan wheel hub 111 integrally injection molded by the present invention having the unbalanced part 117 (such as a convex body) thereon, the imbalance amount of the entire fan wheel after injection molding must fall on the unbalanced part In 117, the staff can directly know that the unbalanced seats and the weight of the unbalanced portion 117 need to be removed, so as to effectively achieve the effect of rapid balancing of the fan wheel and save costs, and also effectively reduce the number of balancing times.

In an embodiment, referring to FIG. 2A, the unbalanced portion 117 is convex and has a half-moon shape. In another embodiment, referring to FIG. 2B, the unbalanced portion 117 is convex and has a honeycomb shape. In another embodiment, referring to FIG. 2C, the unbalanced portion 117 is convex and has a tapered shape.

In an alternative embodiment, referring to FIG. 2D, the unbalanced portion 117 is redesigned as a half-moon-shaped convex body, which is integrally formed and protruded and disposed on an inner surface 1111b of one of the top walls 1111 of the hub 111 for removal. And located on one side of the axis of symmetry SA of the hub 111, and the inner surface 1111b of the top wall 1111 of the hub 111 on the side of the axis of symmetry SA of the hub 111 and the other side corresponding to the axis of symmetry SA of the hub 111 The inner surface 1111b of the top wall 1111 of the wheel hub 111 is asymmetrical.

Please continue to refer to FIG. 3, which is a schematic perspective view of a second aspect of an unbalanced portion of the fan wheel of the present invention. As shown in the figure, the unbalanced part 117 of the present invention is a semi-circular convex body, which is integrally formed and protruded on the outer surface 1112a of the side wall 1112 of the hub 111 for removal, and is located on the axis of symmetry of the hub 111 One side of SA, the axis of symmetry of the hub 111, the side of the hub 111 on the SA side and the outer side of the sidewall 1112 The surface 1112a is asymmetric with the outer surface 1112a of the side wall 1112 of the hub 111 on the other side corresponding to the axis of symmetry SA of the hub 111. The axis of symmetry SA of the hub 111 is a virtual straight line perpendicular to the surface of the side wall 1112 and passes through the center point of the hub 111.

The balance operation of the fan fan wheel in this second aspect of this embodiment is substantially the same as the balance operation of the fan fan wheel in the first aspect described above, and the same parts are not repeated here, and this second aspect of this embodiment The unbalanced portion 117 is protruded on the outer side surface 1112a of the side wall 1112 of the hub 111 by integral injection molding through the aforementioned injection mold, and then the unbalanced portion 117 is removed by mechanical processing (such as a drill and a milling cutter). The whole part makes the fan wheel achieve the purpose of fast and balanced operation.

In an alternative embodiment, referring to FIG. 4, the unbalanced portion 117 is redesigned as a generally rectangular convex body, which is integrally formed and protruded and disposed on an inner surface 1112 b of one side wall 1112 of the hub 111 for removal. And is located on one side of the axis of symmetry SA of the hub 111, and the inside surface 1112b of the side wall 1112 of the hub 111 on the side of the axis of symmetry SA of the hub 111 and the hub on the other side corresponding to the axis of symmetry SA of the hub 111 The inner surface 1112b of the side wall 1112 of the 111 is asymmetric.

In addition, the shape of the unbalanced portion 117 in the above embodiments is not limited to the above. In specific implementation, the shape of the unbalanced portion 117 in the shape of a convex body may be designed to have a geometric shape. The geometric shape is any one of a square, a rectangle, a circle, a half circle, a half moon, a cone, and a honeycomb lattice.

Claims (9)

A balance structure for a fan wheel includes a hub and a plurality of blades arranged on the outer peripheral side of the hub. The hub has a top wall connected to a side wall, and a known unbalanced part that can be removed is integrally arranged on the top. Wall or the side wall, and is located on one side of a preset axis of symmetry of the hub to balance the weight of the fan; The preset unbalanced portion increases the weight number and falls within the unbalanced portion on one side of the preset symmetry axis. The balance structure of the fan wheel according to item 1 of the scope of patent application, wherein the unbalanced portion is integrally formed and protruded on one outer surface of the top wall of the hub for removal, and the one side of the axis of symmetry of the hub The outer surface of the top wall of the wheel hub is asymmetric with the outer surface of the top wall of the wheel on the other side corresponding to the axis of symmetry of the wheel hub. The balance structure of a fan wheel according to item 1 of the scope of patent application, wherein the unbalanced portion is integrally formed and protrudingly disposed on an inner surface of one of the top walls of the hub for removal, and The inner surface of the top wall of the hub is asymmetric with the inner surface of the top wall of the hub on the other side corresponding to the axis of symmetry of the hub. The balance structure of the fan wheel according to item 1 of the patent application scope, wherein the unbalanced portion is integrally formed and protruded on an outer surface of one side wall of the hub for removal, and the one side of the axis of symmetry of the hub The outer surface of the side wall of the hub is asymmetric with the outer surface of the side wall of the hub on the other side corresponding to the axis of symmetry of the hub. The balance structure of a fan wheel according to item 1 of the scope of patent application, wherein the unbalanced portion is integrally formed and protruded on an inner surface of one side wall of the hub for removal, and the side of the axis of symmetry of the hub The inner side surface of the side wall of the hub is asymmetric with the inner side surface of the side wall of the hub on the other side corresponding to the axis of symmetry of the hub. The balance structure of the fan wheel according to item 1 of the patent application scope, wherein the unbalanced portion is a convex body. The balance structure of the fan wheel according to item 1 of the patent application scope, wherein the shape of the unbalanced part is a geometric shape, the geometric shape is a square, a rectangle, a circle, a half moon, a half circle, Either a honeycomb lattice or a cone. The balance structure of the fan wheel according to item 1 of the patent application scope, wherein the axis of symmetry of the hub is a virtual straight line perpendicular to the surface of the side wall and passes through the center point of the hub. The balance structure of a fan wheel according to item 1 of the scope of patent application, wherein the top wall and the side wall jointly define an accommodation space, a magnetic member is accommodated inside one of the side walls of the accommodation space, and a shaft The mandrel is inserted inside one of the top walls opposite to the hub.