TWM467921U - Fan and impeller thereof - Google Patents

Abstract

An impeller includes a fan frame, a hub, a plurality of axial blades and a plurality of wind guiding blades. The fan frame has a wind inlet, a wind outlet and an inner ring-shaped oblique surface, wherein the wind inlet is opposite to the wind outlet, and the inner ring-shaped oblique surface is formed at an inner side wall of the fan frame and adjacent to the wind inlet. The hub is disposed in the fan frame. The axial blades are connected to the inner side wall of the fan frame and the hub. The wind guiding blades protrude from the inner ring-shaped oblique surface.

Description

Fan and its impeller

The present invention relates to a fan and an impeller thereof, and more particularly to an impeller which can effectively increase the overall air volume and air volume and a fan to which the impeller is applied.

Heat sinks are closely related to the development of electronic products. Since the current in the circuit generates unnecessary heat due to the influence of the impedance when the electronic product is in operation, if the thermal energy cannot be effectively eliminated and accumulated on the electronic components inside the electronic product, the electronic component may be raised because of the rising The temperature is damaged. Therefore, the advantages and disadvantages of the heat sink affect the operation of electronic products. At present, the most commonly used heat sink for electronic products is to connect the heat-dissipating section of the heat pipe to the heat-dissipating fins by contacting the heat-absorbing section of the heat pipe, and to dissipate heat-dissipating fins by the fan. However, the axial air intake and the air output of the conventional fan are limited, and the air inlet and the air outlet of the conventional fan are the same in size, and the air volume cannot be concentratedly blown to the heat source, and the heat dissipation effect is limited.

The present invention provides an impeller that can effectively increase the overall air volume and air volume and a fan that uses the impeller to solve the above problems.

According to an embodiment, the impeller of the present invention comprises a frame, a hub, a plurality of axial fan blades, and a plurality of flow guiding blades. The fan frame has an air inlet, an air outlet and an inner ring slope, wherein the air inlet is opposite to the air outlet, and the inner ring slope is formed on the inner side wall of the fan frame and adjacent to the air inlet. The hub is placed in the fan frame. The axial fan blade is connected to the inner side wall of the fan frame and the hub. The deflector blades protrude from the inner ring slope.

In this embodiment, the inner diameter of the fan frame is gradually reduced along the inner ring slope from the air inlet toward the air outlet, so that the air outlet is smaller than the air inlet.

According to another embodiment, the fan of the present invention includes a stator and an impeller. The impeller is rotatably disposed on the stator. The impeller includes a frame, a hub, a plurality of axial fan blades, and a plurality of flow guiding blades. The fan frame has an air inlet, an air outlet and an inner ring slope, wherein the air inlet is opposite to the air outlet, and the inner ring slope is formed on the inner side wall of the fan frame and adjacent to the air inlet. The hub is placed in the fan frame. The axial fan blade is connected to the inner side wall of the fan frame and the hub. The deflector blades protrude from the inner ring slope.

In this embodiment, the inner diameter of the fan frame is gradually reduced along the inner ring slope from the air inlet toward the air outlet, so that the air outlet is smaller than the air inlet.

In summary, the creation system adds a diversion fan blade to the inner ring slope adjacent to the air inlet, which can effectively increase the axial air volume and the air volume. In addition, since the inner diameter of the fan frame is gradually reduced from the air inlet to the air outlet along the inclined surface of the inner ring, according to the Venturi tube principle, the air volume blown into the air inlet can be pressurized again, thereby increasing Cooling capacity at the hub. Furthermore, since the air outlet of the fan frame is smaller than the air inlet, the smaller air outlet can effectively blow the air volume blown into the air inlet to the heat source, thereby improving the heat dissipation effect.

The advantages and spirit of this creation can be further understood by the following detailed description of the creation and the drawings.

1‧‧‧fan

10‧‧‧Base

12‧‧‧ Stator

14‧‧‧ Impeller

16‧‧‧ bearing

18‧‧‧ wear-resistant piece

100‧‧‧ shaft tube

120‧‧‧Upper insulation frame

122‧‧‧矽 steel sheet combination

124‧‧‧Insulation frame

140‧‧‧Fan frame

142‧‧·wheels

144‧‧‧Axial fan blades

146‧‧ ‧ diversion fan blade

148‧‧‧ Centrifugal fan blades

1400‧‧‧ inlet

1402‧‧‧air outlet

1404‧‧‧ Inner ring bevel

1420‧‧‧ shaft

1440‧‧‧Depression

A-A‧‧‧ hatching

Fig. 1 is a combination diagram of a fan 1 according to an embodiment of the present invention.

Figure 2 is an exploded view of the fan in Figure 1.

Figure 3 is an exploded view of the fan in Figure 1 from another perspective.

Fig. 4 is a cross-sectional view of the fan in Fig. 1 taken along line A-A.

Please refer to FIG. 1 to FIG. 4 , FIG. 1 is a combination diagram of a fan 1 according to an embodiment of the present invention, FIG. 2 is an exploded view of the fan 1 in FIG. 1 , and FIG. 3 is a first diagram The exploded view of the fan 1 at another viewing angle, and Fig. 4 is a cross-sectional view of the fan 1 taken along line AA of Fig. 1. As shown in FIGS. 1 to 4, the fan 1 includes a base 10, a stator 12, an impeller 14, and an axis. The bearing 16 and a wear piece 18 are provided. The base 10 has a shaft tube 100. Both the bearing 16 and the wear plate 18 are disposed in the shaft tube 100. The stator 12 is sleeved on the shaft tube 100. The stator 12 includes an upper insulating frame 120, a silicon steel sheet assembly 122, and a lower insulating frame 124. The silicon steel sheet assembly 122 is interposed between the upper insulating frame 120 and the lower insulating frame 124, wherein the silicon steel sheet combination 122 is formed by laminating a plurality of silicon steel sheets. In practical applications, a metal coil (not shown) is wound around the pole teeth formed by the upper insulating frame 120, the silicon steel sheet combination 122, and the lower insulating frame 124.

The impeller 14 includes a frame 140, a hub 142, a plurality of axial fans 144, a plurality of flow guide blades 146, and a plurality of centrifugal blades 148. The fan frame 140 has an air inlet 1400, an air outlet 1402, and an inner ring slope 1404. The air inlet 1400 is opposite to the air outlet 1402. The inner ring slope 1404 is formed on the inner side wall of the fan frame 140 and adjacent to the air inlet 1400. The hub 142 is disposed in the fan frame 140. The hub 142 has a shaft 1420. The shaft 1420 is inserted into the bearing 16 and abuts against the wear plate 18 such that the impeller 14 is rotatably disposed on the stator 12. The axial fan blade 144 is coupled to the inner side wall of the fan frame 140 and the hub 142. The deflector blades 146 protrude from the inner ring ramp 1404. In other words, the flow guide vane 146 is adjacent to the air inlet 1400 of the fan frame 140. As shown in FIG. 4, the inner diameter of the fan frame 140 at the air inlet 1400 is gradually reduced from the air inlet 1400 toward the air outlet 1402 along the inner ring slope 1404, so that the air outlet 1402 is smaller than the air inlet 1400. In this embodiment, the axial fan blades 144 are spaced apart from the guide vanes 146, but are not limited thereto. In another embodiment, more than one diversion fan blade 146 may be disposed between every two axial fan blades 144, depending on the application. The centrifugal fan blade 148 is attached to the outer side wall of the fan frame 140.

When the hub 142 is rotated relative to the stator 12, the hub 142 will drive the axial fan blades 144, the fan frame 140, and the deflector blades 146 to rotate together with the centrifugal blades 148. At this time, the rotating axial fan blade 144 blows airflow from the air inlet 1400 of the fan frame 140. At the same time, the guide vane 146 adjacent to the air inlet 1400 can effectively increase the axial air intake. Due to the increase of the amount of air entering, the amount of air blown from the air outlet 1402 of the fan frame 140 is also increased, thereby effectively improving the heat dissipation effect. In addition, since the inner diameter of the fan frame 140 at the air inlet 1400 is gradually reduced from the air inlet 1400 toward the air outlet 1402 along the inner ring slope 1404, according to the venturi principle, the air volume blown into the air inlet 1400 can be Carry out The pressure increases the heat dissipation capability at the hub 142. Moreover, since the air outlet 1402 is smaller than the air inlet 1400, the air outlet 1402 can effectively blow the air volume blown into the air inlet 1400 to the heat source (not shown), thereby improving the heat dissipation effect. In addition, the rotating centrifugal fan blades 148 also blow the airflow around to enhance the heat dissipation around the fan 1. In other words, the fan 1 of this creation has the functions of a centrifugal fan and an axial fan.

In this embodiment, each of the axial fan blades 144 may have a recessed portion 1440 , and the recessed portion 1440 faces the air outlet 1402 of the fan frame 140 . Thereby, when the impeller 14 rotates, the recessed portion 1440 of the axial flow fan blade 144 can effectively reduce the generation of noise.

In summary, the creation system adds a diversion fan blade to the inner ring slope adjacent to the air inlet, which can effectively increase the axial air volume and the air volume. In addition, since the inner diameter of the fan frame is gradually reduced from the air inlet to the air outlet along the inclined surface of the inner ring, according to the venturi principle, the air volume blown from the air inlet can be pressurized, thereby increasing the heat dissipation at the hub. ability. Furthermore, since the air outlet of the fan frame is smaller than the air inlet, the smaller air outlet can effectively blow the air volume blown into the air inlet to the heat source, thereby improving the heat dissipation effect. In addition, a recess may be formed on one side of the axial fan blade facing the air outlet to reduce noise generated when the impeller rotates.

The above descriptions are only preferred embodiments of the present invention, and all changes and modifications made by the scope of the patent application of the present invention should be covered by the present invention.

1‧‧‧fan

10‧‧‧Base

14‧‧‧ Impeller

140‧‧‧Fan frame

142‧‧·wheels

144‧‧‧Axial fan blades

146‧‧ ‧ diversion fan blade

148‧‧‧ Centrifugal fan blades

1400‧‧‧ inlet

1402‧‧‧air outlet

1404‧‧‧ Inner ring bevel

A-A‧‧‧ hatching

Claims (10)

An impeller includes: a frame having an air inlet, an air outlet, and an inner ring slope, the air inlet being opposite to the air outlet, the inner ring slope being formed on an inner side wall of the frame and adjacent to the air inlet; A hub is disposed in the fan frame; a plurality of axial fan blades are coupled to the inner side wall of the fan frame and the hub; and a plurality of flow guiding blades protrude from the inner ring slope. The impeller according to claim 1, wherein an inner diameter of the fan frame is gradually reduced from the air inlet to the air outlet along the inclined surface of the inner ring, such that the air outlet is smaller than the air inlet. The impeller of claim 1, wherein the axial flow fans are spaced apart from the flow guide blades. The impeller according to claim 1, further comprising a plurality of centrifugal blades connected to the outer side wall of the frame. The impeller according to claim 1, wherein each of the axial flow fans has a recessed portion, and the recessed portion faces the air outlet. A fan includes: a stator; and an impeller rotatably disposed on the stator, the impeller includes: a frame having an air inlet, an air outlet, and an inner ring slope, the air inlet and the air outlet In contrast, the inner ring slope is formed on the inner side wall of the fan frame and adjacent to the air inlet; a hub is disposed in the fan frame; a plurality of axial flow blades are coupled to the inner side wall of the frame and the hub; A plurality of flow guiding blades protrude from the inclined surface of the inner ring. The fan of claim 6, wherein the inner diameter of the fan frame is gradually reduced from the air inlet to the air outlet along the inclined surface of the inner ring, such that the air outlet is smaller than the air inlet. The fan of claim 6, wherein the axial flow blades are spaced apart from the flow guide blades. The fan of claim 6, wherein the impeller further comprises a plurality of centrifugal blades attached to the outer side wall of the frame. The fan of claim 6, wherein each of the axial flow fans has a recessed portion, and the recessed portion faces the air outlet.