TWI670421B - Fan wheel - Google Patents

Abstract

A fan wheel is used to solve the problem that the blade root of the conventional fan wheel is easily broken. The system includes: a hub with a plate body and a ring wall connected to the periphery of the plate body; several blades connected to the outer wall of the ring wall, each of the blades having a wind-side root away from the plate body; And several reinforcing ribs, each of which has a main body section and an extension section, the main body section is connected to the inner wall of the ring wall and is located at the root of the outlet side, the extension section is connected to the inner surface of the plate, the The first end of the main body section is connected to the extension section, the second end of the main body section is radially aligned with the wind-side root, or the second end of the main body section is closer to the bottom edge of the ring wall than the wind-side root.

Description

Fan wheel

The invention relates to a fan wheel, in particular to a fan wheel that can be firmly engaged with a fan blade and a hub.

Please refer to FIG. 1, which is a conventional fan wheel 9. The conventional fan wheel 9 has a hub 91, a number of fan blades 92 and a metal ring 93. The hub 91 has a top portion 911 and a ring wall portion 912, the ring wall portion 912 axially surrounds the outer periphery of the top portion 911; the blades 92 are connected to the ring wall portion 912 in an equidistant arrangement On the outer wall surface, the blades 92 have a windward side root 921 and a windward side root 922 respectively, the windward side root 921 is adjacent to the top 911, and the wind side root 922 is away from the top 911; the metal ring body 93 is disposed in the hub 91 and supports the inner wall surface of the ring wall portion 912, thereby increasing the structural strength of the ring wall portion 912. An embodiment of the fan wheel 9 similar to the conventional one has been disclosed in the patent case of the "fan wheel structure (1)" published by the Republic of China No. 200906027.

The conventional fan 9 mentioned above, at the moment when it is stopped and opened, due to the law of inertia, the stress is concentrated at the root 922 on the wind side; therefore, the conventional fan 9 is easy to be used by the The wind-side root portion 922 or the ring wall portion 912 connected to the outlet-side root portion 922 is broken, which causes structural damage to the fan wheel 9 and further reduces the service life of the conventional fan wheel 9 significantly.

In view of this, the conventional fan wheel still needs to be improved.

In order to solve the above problems, an object of the present invention is to provide a fan wheel, which can improve the structural strength of the connection between the blades and the hub.

The next object of the present invention is to provide a fan wheel that can discharge high-temperature air accumulated in the hub.

Another object of the present invention is to provide a fan wheel, which can reduce the production material of the hub to reduce the cost of manufacturing the fan wheel.

Another object of the present invention is to provide a fan wheel that can increase the structural strength of the hub itself.

The following directivity or similar terms of the invention, such as "front", "rear", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer" , "Side", etc., mainly refer to the directions of the attached drawings, and each directivity or its approximate terms are only used to help explain and understand the embodiments of the present invention, not to limit the present invention.

The fan wheel of the present invention includes: a hub with a plate body and a ring wall, the inner surface of the plate body has a shaft seat, a ring rib and a plurality of connecting bars, the ring rib is connected to each extension of the reinforcing rib, the A plurality of connecting bars connect the ring rib and the shaft seat, the ring wall connects the periphery of the plate body; a number of blades connect the outer wall of the ring wall, and each of the blades has a wind-side root away from the plate body; And several reinforcing ribs, each of which has a main body section and an extension section, the main body section is connected to the inner wall of the ring wall and is located at the root of the outlet side, the extension section is connected to the inner surface of the plate, the The first end of the main body section is connected to the extension section, the second end of the main body section is radially aligned with the wind-side root, or the second end of the main body section is closer to the bottom edge of the ring wall than the wind-side root.

According to this, the fan wheel of the present invention utilizes the main body segments of the reinforcing ribs to position each of the wind-side roots, and the second end of the main body segment is radially aligned with or closer to the wind-side roots The bottom edge of the ring wall, so that the part of the ring wall between the main body section and the blade and the main body section can be regarded as an extension structure of the blade; therefore, the root of the wind side of the blade can be strengthened The structural strength can effectively prevent the wind-side root or the ring wall connected to the wind-side root from breaking, so as to increase the service life of the fan wheel. Furthermore, each of the extension sections can be more stably provided on the plate body, which has the effects of enhancing the stability of the combination of the main body section of each reinforcing rib and the ring wall, and the structural strength of the plate body.

Each of the blades has an air inlet side root, the air inlet side root is adjacent to the plate body, and the air inlet side root and the air outlet side root are inclinedly connected to the outer wall of the ring wall. In this way, each fan blade can drive more airflow, which has the effect of improving the heat dissipation capacity.

Wherein, the plate body has several through holes, and the several through holes are respectively located between the several extending sections. In this way, it has the effect of allowing the high-temperature air accumulated inside the hub to be discharged through the through holes.

Wherein, the inner surface of the board body has several grooves, and the several grooves are arranged to form a honeycomb shape. In this way, the production material of the plate body can be reduced and the weight of the entire hub can be reduced, which has the effects of reducing the manufacturing cost of the hub and reducing the power load on the rotation of the fan wheel.

Among them, the reinforcing rib system forms an L shape. In this way, the shape of the hub can be matched, and the reinforcing rib can be easily combined with the hub.

Wherein, each of the main body sections is perpendicular to the plate body. In this way, the shape of the hub can be matched, which has the effect of making the main body section fit to the ring wall.

Wherein, the length of the extension section is greater than or equal to 1/5 of the length of the main body section. In this way, the extension section and the plate system have sufficient bonding area, which has the effect of enhancing the stability of the entire reinforcement rib and the hub.

Among them, it also contains several reinforcing ribs, which are connected to the hub and divided Do not lie between the ribs. In this way, it has the effect of further enhancing the structural strength of the hub.

〔this invention〕

1‧‧‧Wheel

11‧‧‧Board

111‧‧‧Inner surface

112‧‧‧Through hole

113‧‧‧Shaft seat

114‧‧‧Ring

115‧‧‧Connector

116‧‧‧groove

12‧‧‧Circle Wall

121‧‧‧Outer wall

122‧‧‧Inner wall

12a‧‧‧Bottom edge

2‧‧‧ fan blade

21‧‧‧Eye root end

211‧‧‧Inlet side root

212‧‧‧The root of the wind side

3‧‧‧reinforced rib

31‧‧‧Main section

31a‧‧‧The first end

31b‧‧‧Second end

32‧‧‧Extended section

4‧‧‧reinforcing ribs

C‧‧‧Rotating axis

T1‧‧‧thickness

T2‧‧‧Total thickness

S‧‧‧accommodation space

〔Convention〕

9‧‧‧fan wheel

91‧‧‧Wheel

911‧‧‧Top

912‧‧‧Circle Wall Department

92‧‧‧leaf

921‧‧‧Wind-side root

922‧‧‧The root of the wind side

93‧‧‧Metal ring body

[Figure 1] An exploded perspective view of a conventional fan wheel.

[Figure 2] A perspective view of a first embodiment of the present invention.

[Figure 3] A plan view of a first embodiment of the present invention.

[Figure 4] A cross-sectional view taken along line A-A of Figure 3.

[Figure 5] A perspective view of a second embodiment of the present invention.

[Figure 6] A perspective view of a third embodiment of the present invention.

[Figure 7] A plan view of a third embodiment of the present invention.

[Figure 8] A cross-sectional view taken along line B-B of Figure 7.

[Figure 9] A plan view of a fourth embodiment of the present invention.

In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, the preferred embodiments of the present invention are described below in conjunction with the attached drawings, which are described in detail as follows: Please refer to FIG. 2, It is the first embodiment of the fan wheel of the present invention and includes a hub 1, a number of blades 2 and a number of reinforcing ribs 3, the number of blades 2 is connected to the outside of the hub 1, the number of reinforcing ribs 3 is connected to the Inside the hub 1. It is worth mentioning that the present invention can be applied to fans such as a blower fan or an axial fan. Although this embodiment selects an axial fan wheel as an example of implementation, it is not limited thereto.

Please refer to Figures 2 and 3, the hub 1 has a hollow cylindrical shape, and the hub 1 Plastic injection molding can be used, and the invention is not limited. The hub 1 has a plate body 11 and a ring wall 12 connected to the periphery of the plate body 11. Wherein, the board 11 has an inner surface 111, the ring wall 12 has an outer wall 121 and an inner wall 122 opposite to each other, and the ring wall 12 forms a receiving space S around it; the receiving space S can be accommodated Such as rotation axis C and permanent magnets (not shown) and other components, the rotation axis C is connected to the hub 1, so that the hub 1 can be driven by the rotation axis C to rotate, which is well known to those skilled in the art, This will not be repeated here. In addition, the plate body 11 may have a plurality of through holes 112 so that the high-temperature air accumulated in the hub 1 can be discharged through the through holes 112. In addition, the bottom edge 12a of the ring wall 12 may also be flat or zigzag; in this embodiment, the bottom edge 12a of the ring wall 12 is zigzag to reduce the operating noise when the fan wheel rotates.

The plurality of blades 2 are connected to the ring wall 12 of the hub 1, each blade 2 has a blade root end 21, and each blade 2 is connected to the outer wall 121 of the ring wall 12 by the blade root end 21; In the embodiment, the hub 1 and the blades 2 are integrally connected. The blade root end 21 has an inlet side root 211 and an outlet side root 212, the inlet side root 211 is closer to the plate body 11, the outlet side root 212 is farther away from the plate body 11, the inlet side A flat, inclined or curved surface can be formed between the root 211 and the wind-side root 212, and the axial direction of the blade root end 21 relative to the rotation axis C can form a parallel or inclined connection to the ring wall 12 The outer wall 121 is not limited in the present invention. In this embodiment, the blade root end 21 forms an inclined connection with respect to the axial direction of the rotation axis C, so that each blade 2 can drive more airflow .

Referring to FIGS. 2 and 4, each of the reinforcing ribs 3 has a main body section 31 and an extension section 32, the main body section 31 is connected to the inner wall 122 of the ring wall 12, the main body section 31 is preferably perpendicular to the plate body 11. The main body section 31 can be attached to the ring wall 12; the extension section 32 is connected to the inner surface 111 of the plate body 11, and the through holes 112 of the plate body 1 are respectively located in the extension sections Between 32. In addition, the extending section 32 is connected to the main body section 31, so that each of the reinforcing ribs 3 is preferably formed in an L-shape so as to match the shape of the hub 1 and can be combined.

In detail, the main body section 31 aligns the wind-side root portion 212 of the blade 2; preferably, the reinforcing rib 3 of this embodiment has a larger width, so that the wind-side root portion 212 can be completely aligned Within the width of the main body segment 31 of the reinforcing rib 3, the location of the ring wall 12 between the main body segment 31 and the blade 2 and the main body segment 31 can be regarded as an extension structure of the blade 2, The total thickness T2 of the main body segment 31 and the ring wall 12 is greater than the thickness T1 of the ring wall 12; that is, the total thickness T2 of the main body segment 31 and the ring wall 12 can be regarded as an extension structure of the fan blade 2, Therefore, the wind-side root portion 212 of the fan blade 2 can have better structural strength due to the main body section 31. In particular, the wind-side root portion 212 is not restricted to be positioned at the center of the main body section 31, as long as the wind-side root portion 212 is positioned anywhere at the main body section 31, it can be regarded as the main body section 31 series Position the wind-side root 212. In this embodiment, the first end 31 a of the main body section 31 is connected to the extension section 32, and the second end 31 b of the main body section 31 is radially aligned with the wind-side root 212. In addition, the length of the extension section 32 is preferably greater than or equal to more than 1/5 of the length of the body section 31. The length of the extension section 32 extends radially from the inner wall 122 of the ring wall 12, and the length of the body section 31 From the inner surface 111 of the plate body 11 to the second end 31b of the main body section 31, the extension section 32 and the plate body 11 have a sufficient bonding area.

The fan wheel of the present invention may further include a plurality of reinforcing ribs 4 connected to the hub 1 and located between the reinforcing ribs 3, respectively, to further enhance the structural strength of the hub 1; In this embodiment, the shape of the reinforcing rib 4 is preferably the same as the shape of the reinforcing rib 3, so that each of the reinforcing rib 4 and each of the reinforcing ribs 3 can form a uniformity and can be easily produced.

Please refer to FIG. 3 and FIG. 4, according to the foregoing structure, when the fan wheel rotates around the axis of rotation C, the several blades 2 can drive the air flow, so that the air flow flows from the wind inlet root 211 It is introduced and derived from the wind-side root 212. According to this, even at the moment when the fan wheel of the present invention stops and opens, since the main body sections 31 of the reinforcing ribs 3 are aligned with the root portion 212 of the fan blade 2 on the air outlet side, the wind outlet side of the blade 2 can be strengthened The structural strength of the root 212; therefore, it is possible to effectively prevent the wind-side root 212 or the ring wall 12 connecting the wind-side root 212 from breaking.

Please refer to FIG. 5, which is the second embodiment of the fan wheel of the present invention. The inner surface 111 of the plate body 11 may further have a shaft seat 113. The shaft seat 113 may strengthen the rotation axis C to join the plate body 11. The structural strength at the location, the two ends of the extension section 32 of each reinforcing rib 3 are respectively connected to the main body section 31 and the shaft seat 113, so that each extension section 32 can be more firmly set on the plate body 11, and at the same time can lift the plate The structural strength of the body 11.

Please refer to Figs. 6 and 7, which is the third embodiment of the fan wheel of the present invention. The inner surface 111 of the plate body 11 may further have a ring rib 114 and a plurality of connecting bars 115. The ring rib 114 connects each In the extending section 32 of the reinforcing rib 3, the connecting bars 115 connect the ring rib 114 and the shaft base 113, so that the structural strength of the plate body 11 can be further improved.

Please refer to FIGS. 6 and 8. In addition, in this embodiment, the second end 31 b of the main body section 31 of each reinforcing rib 3 is closer to the bottom edge 12 a of the ring wall 12 than the wind-side root 212, so that the The axially combined area of the main body section 31 and the ring wall 12 can increase the structural strength of the connection between the wind-side root 212 and the ring wall 12 to ensure that the wind-side root 212, or connect the There will be no breakage at the loop wall 12 of the root 212 on the wind side.

Please refer to FIG. 9, which is the fourth embodiment of the fan wheel of the present invention. The inner surface 111 of the plate body 11 may also have a plurality of grooves 116, and the grooves 116 are arranged to form a honeycomb shape; In this way, the plate body 11 can reduce the production materials required to form the plate body 11 without reducing the structural strength, and at the same time, the weight of the entire hub 1 can be relatively reduced to achieve the need for light weight, which can further The power load on the rotation of the fan wheel of the invention is reduced.

In summary, the fan wheel of the present invention utilizes the main body segments of the reinforcing ribs to align the roots of the air outlet side, and the second end of the main body segment is radially aligned with the root of the air outlet side or lower than the air outlet side The root is close to the bottom edge of the ring wall, so that the position of the ring wall between the main body segment and the fan blade and the main body segment can be regarded as the extension structure of the fan blade; therefore, the wind side of the fan blade can be strengthened The structural strength of the root can effectively avoid the situation where the wind-side root or the ring wall connecting the wind-side root breaks Occurrence, by this, has the effect of increasing the service life of the fan wheel.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with this art without departing from the spirit and scope of the present invention still makes various changes and modifications to the above-mentioned embodiments. The technical scope of the invention is protected, so the scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

Claims (8)

A fan wheel includes: a hub with a plate body and a ring wall, the inner surface of the plate body has a shaft seat, a ring rib and a plurality of connecting bars, the ring rib connects each extension of the reinforcing rib, the number The connecting bar connects the ring rib and the shaft seat, the ring wall connects the periphery of the plate body; several blades connect to the outer wall of the ring wall, each of the blades has a wind-side root away from the plate body; and several A reinforcing rib, each of the reinforcing ribs has a main body segment and an extension segment, the main body segment is connected to the inner wall of the ring wall and the root of the wind side is positioned, the extension segment is connected to the inner surface of the plate body, the main body segment The first end of is connected to the extension section, the second end of the main body section is radially aligned with the root of the wind outlet side, or the second end of the main body section is closer to the bottom edge of the ring wall than the root of the wind outlet side. The fan wheel according to item 1 of the patent application scope, wherein each blade has an air inlet side root, the air inlet side root is adjacent to the plate body, and the air inlet side root is inclinedly connected to the air outlet side root The outer wall of the ring wall. The fan wheel as described in item 1 of the patent application scope, wherein the plate body has a plurality of through-holes, and the plurality of through-holes are located between the extensions. The fan wheel as described in item 1 of the patent application range, wherein the inner surface of the plate body has a plurality of grooves, and the plurality of grooves are arranged to form a honeycomb shape. The fan wheel as described in item 1 of the patent application scope, wherein the reinforcing ribs are formed into an L shape. The fan wheel according to item 1 of the patent application scope, wherein each of the main body sections is perpendicular to the plate body. The fan wheel as described in item 1 of the patent application scope, wherein the length of the extension section is greater than or equal to 1/5 of the length of the main body section. The fan wheel according to any one of the items 1 to 7 of the patent application scope, further includes a plurality of reinforcing ribs, the plurality of reinforcing ribs are connected in the hub and are respectively located between the reinforcing ribs.