JP3172048U - Improvement of blade structure of centrifugal fan - Google Patents

Abstract

A centrifugal fan blade structure having a pressure increasing effect is provided.
In a centrifugal blower fan for air cooling, a connection portion 111 includes a wheel 11 coupled to a rotary drive shaft, a ring body 112 in which a first blade piece assembly 121 and a second blade piece assembly 131 are arranged. The first blade piece assembly 121 and the second blade piece assembly 131, which are connected to form the blade piece structure 1 of the centrifugal fan and in which the blade pieces for blowing air are arranged in an annular shape, are respectively formed on both surfaces of the ring body 112. They are arranged back to back on the first side 1121 and the second side 1122. When the centrifugal fan is driven to rotate, the air is efficiently blown from the flow path formed between the blade pieces of the first blade piece assembly 121 and the second blade piece assembly 131.
[Selection] Figure 1

Description

The present invention relates to an improvement in the structure of a centrifugal fan blade, and more particularly to an improvement in the structure of a centrifugal fan blade that improves the effect of introducing and increasing the pressure of a fan by a two-layer blade.

  The current electronics industry is developing rapidly, the performance of electronic components is constantly improving, and the faster the calculation speed, the relatively large amount of heat is generated, and the generated heat is immediately discharged to dissipate heat. If this is not possible, the calculation speed of the electronic member will be delayed, and if it is serious, burnout will occur. Therefore, it is necessary to use a small centrifugal fan for heat dissipation in a finite system space. The centrifugal fan includes a frame, a fan wheel, and a plurality of blade pieces that are provided outside the fan wheel. The centrifugal fan has an intake port above and below the frame, respectively, During operation, ambient air flows through the blade piece, and the axial airflow entering from the air intake is turned into the radial airflow of the fan wheel and discharged from the air outlet.

At this stage, those skilled in the art generate relatively large wind pressure and air volume mainly by changing the shape of the winglet body. However, the effect of the shape of the winglet body is finite and is still required by the user. And the structural shape design of the blade body is relatively limited due to the relatively small frame. Thus, the prior art has the following disadvantages:
1.
Limited by structural design;
2.
The pressure boosting effect is finite;
3.
The current transfer efficiency is not good;
4).
There is a lot of noise.

JP 2007-247495 A JP 2009-156187 A

  Therefore, in order to solve the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an improved centrifugal fan blade structure having a pressure increasing effect.

In order to achieve the above object, the blade structure improvement of a centrifugal fan provided by the present invention comprises a wheel, a first blade piece assembly, and a second blade piece assembly,
The wheel has at least one connection, the connection connected to an annulus, the annulus having a first side and a second side.

  The first wing piece body group includes a plurality of first wing piece bodies, and the first wing piece bodies are arranged at intervals on the first side of the ring body.

  The second wing piece body group includes a plurality of second wing piece bodies, and the second wing piece bodies are arranged at intervals on the second side of the ring body.

Through the bidirectional pressure-increasing structure of the first and second blade pieces, the flow guiding efficiency of the entire centrifugal fan can be greatly improved, and at the same time, the effects of pressure increase and noise reduction are combined. Therefore, the present invention has the following advantages:
1.
Improves air flow and has good conduction efficiency;
2.
Improves wind pressure and has a boosting effect;
3.
Noise can be reduced;
4).
You can customize the angle of inclination for installing the blade.

FIG. 3 is a three-dimensional view of the first embodiment of the blade structure improvement of the centrifugal fan of the present invention. FIG. 3 is a plan view of a first embodiment of a blade structure improvement of a centrifugal fan according to the present invention. It is a top view of 2nd Example of the blade piece structure improvement of the centrifugal fan of this invention. It is a top view of 3rd Example of the blade piece structure improvement of the centrifugal fan of this invention. It is a top view of 4th Example of the blade piece structure improvement of the centrifugal fan of this invention. It is a top view of 5th Example of the blade piece structure improvement of the centrifugal fan of this invention. It is a bottom view of 6th Example of the blade piece structure improvement of the centrifugal fan of this invention. It is a bottom view of 7th Example of the blade piece structure improvement of the centrifugal fan of this invention.

  The above object of the present invention and the features of the structure and function thereof will be described based on preferred embodiments with attached drawings.

  Please refer to FIG. 1 and FIG. FIG. 2 is a three-dimensional view and a plan view of a first embodiment of the centrifugal fan blade structure improvement of the present invention. As shown in the figure, the centrifugal fan blade structure 1 includes a wheel 11 and a first blade fragment assembly. 12 and a second wing piece assembly 13.

  The wheel 11 has at least one connection portion 111 and is connected to the ring body 112 via the connection portion 111, and the ring body 112 has a first side 1121 and a second side 1122.

  The first wing piece body set 12 includes a plurality of first wing piece bodies 121, and the first wing piece bodies 121 are arranged and arranged at intervals on the first side 1121 of the ring body 112.

  The second wing piece assembly 13 includes a plurality of second wing piece assemblies 131, and the second wing piece assemblies 131 are arranged and arranged at intervals on the second side 1122 of the ring body 112. .

The first wing piece body 121 further has a first end 1211 and a second end 1212, and a first flow path 1213 is formed between adjacent first wing piece bodies 121, and the second wing piece body 131 is Furthermore, it has the 3rd end 1311 and the 4th end 1312, and forms the 2nd flow path 1313 between the 2nd blade piece bodies 131 which adjoin.

  The first and second sides 1121 and 1122 form an upper surface and a lower surface of the ring body 112.

Please refer to FIG. FIG. 6 is a plan view of a second embodiment of the centrifugal fan blade structure improvement of the present invention. As shown in the drawing, a part of the structure of this embodiment is the same as that of the first embodiment. , Not described again.
The difference between the present embodiment and the first embodiment is that the extending length of the first wing piece assembly 12 is shorter than the length of the second wing piece assembly 13 disposed on the opposite side of the ring body 112. It is.

  Please refer to FIG. FIG. 6 is a plan view of a third embodiment of the centrifugal fan blade structure improvement of the present invention. As shown in the drawing, a part of the structure of this embodiment is the same as that of the first embodiment. , Not described again. The difference between the present embodiment and the first embodiment is that the number of the first wing piece bodies 121 is different from the number of the second wing piece bodies 131, and this embodiment is different from the first wing piece body 121. However, the present invention is not limited to this case.

Please refer to FIG. FIG. 7 is a plan view of a fourth embodiment of the centrifugal fan blade structure improvement according to the present invention. As shown in the figure, a part of the structure of this embodiment is the same as that of the first embodiment. , Not described again.
The difference between the present embodiment and the first embodiment is that the chord (airfoil cross-sectional length) of the second end 1212 of the first wing piece body 121 is greater than the fourth end 1312 of the second wing piece body 131. There is a long time.

Please refer to FIG. FIG. 10 is a plan view of a fifth embodiment of the improvement of the blade structure of the centrifugal fan according to the present invention.
Since a part of the structure of this embodiment is the same as that of the first embodiment, it will not be described again here. The difference between the present embodiment and the first embodiment is that the chord (airfoil cross-sectional length) of the fourth end 1312 of the second blade piece 131 is greater than the second end 1212 of the first blade piece 121. There is a long time.

Please refer to FIG. FIG. 10 is a plan view of a sixth embodiment of the centrifugal fan blade structure improvement according to the present invention. As shown in the figure, a part of the structure of the present embodiment is the same as the first embodiment. , Not described again.
The difference between the present embodiment and the first embodiment is that the first end 1211 of the first wing piece body 121 is installed at a position shifted from the third end 1311 of the second wing piece body 131. The first wing piece body 121 has a first flow path 1213, the second wing piece body 131 has a second flow path 1313, and the first flow path 1213 has a first intake end 1213a and a first wing piece body 12113. The second air flow path 1313 has a second air intake end 1313a and a second air blow end 1313b, and the first air intake end 1213a and the second air intake end 1313a are displaced from each other. It is to be arranged.

Please refer to FIG. FIG. 10 is a plan view of a seventh embodiment of the centrifugal fan blade structure improvement according to the present invention. As shown in the figure, a part of the structure of this embodiment is the same as the first embodiment. No mention again.
The difference between the present embodiment and the first embodiment is that the first end 1211 of the first wing piece body 121 is installed corresponding to the third end 1311 of the second wing piece body 131, respectively. The first wing piece body 121 has a first flow path 1213, the second wing piece body 131 has a second flow path 1313, and the first flow path 1213 The first air intake end 1213a and the first air blow end 1213b, and the second flow path 1313 has the second air intake end 1313a and the second air blow end 1313b, and the first air intake end 1213a and the second air intake end 1313a. Are to be installed corresponding to each other.

DESCRIPTION OF SYMBOLS 1 Centrifugal fan blade structure 11 Wheel 111 Connection part 112 Ring body 1121 1st side 1122 2nd side 12 1st blade piece assembly 121 1st blade piece body 1211 1st end 1212 2nd end 1213 1st flow path 1213a 1st inlet end 1213b 1st ventilation end 13 2nd blade piece group 131 2nd blade piece body 1311 3rd end 1312 4th end 1313 2nd flow path 1313a 2nd intake end 1313b 2nd ventilation end

Claims (9)

In centrifugal fan for air cooling,
A rotationally driven wheel;
A ring body for arranging the first blade piece body assembly and the second blade piece body assembly composed of a blade blade body for blowing is connected at a connection portion to constitute a blade structure of the centrifugal fan,
The first wing piece body assembly and the second wing piece body assembly are arranged in an annular manner on the ring body at intervals between the first wing piece body assembly and the second wing piece body assembly. The body assembly is arranged back to back on the first side and the second side of both sides of the ring body,
Centrifugal fan blade structure.   The first wing piece body further includes a first end on the wheel side and a second end on the other end side, and the second wing piece body further includes a third end on the wheel side and a second end on the other end side. A first flow path from the first end toward the second end on the other end side between the adjacent first wing pieces, and a third end from the third end between the adjacent second wing pieces; The blade structure of the centrifugal fan according to claim 1, wherein a second flow path toward the fourth end on the side is formed.   The blade structure of a centrifugal fan according to claim 1, wherein the first and second sides correspond to an upper side and a lower side of the ring body.   The length of the first wing piece assembly extending in the direction opposite to the direction of the ring body is shorter than the length of the second wing piece assembly set extending in the direction opposite to the direction of the ring body. The blade structure of the centrifugal fan according to claim 1.   2. The blade structure of a centrifugal fan according to claim 1, wherein the number of the first and second blade pieces is the same or different.   3. The blade structure of the centrifugal fan according to claim 2, wherein the chord length of the second end of the first blade piece is longer than the chord of the fourth end of the second blade piece. .   3. The blade structure of a centrifugal fan according to claim 2, wherein a length of a fourth end chord of the second blade piece is longer than a second end chord of the first blade piece.   The first wing piece body further has a first end on the wheel side and a second end on the other end side, and the second wing piece body further has a third end on the wheel side and a fourth end on the other end side. A first end of the first wing piece body is disposed so as to be shifted from a third end of the second wing piece body, and a first flow path is provided between the first wing piece bodies. And a second flow path between the second blade pieces, the first flow path having a first intake end and a first blower end, and the second flow path having a second intake end and a second intake end. 2. The winglet structure of a centrifugal fan according to claim 1, wherein the first air intake end and the second air intake end are disposed so as not to correspond to each other. The first wing piece body further has a first end on the wheel side and a second end on the other end side, and the second wing piece body further has a third end on the wheel side and a fourth end on the other end side. A first end of the first wing piece body is installed so as to correspond to a third end of the second wing piece body, and the first flow path includes a first intake end and a first air blower. The second flow path has a second intake end and a second air blowing end, and the first intake end and the second intake end are installed corresponding to each other. The blade structure of the described centrifugal fan.

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