TWM460321U - Fan impeller, centrifugal axial fan, heat dissipating device and display card module - Google Patents

Abstract

A fan impeller includes a fan frame, a plurality of centrifugal blades, a hub and a plurality of axial blades. The fan frame has a wind enter opening and a wind exhaust opening, wherein the wind exhaust opening is smaller than the wind enter opening. The centrifugal blades are connected to an outer wall of the fan frame. The hub is disposed in the fan frame. The axial blades are connected to an inner wall of the fan frame and the hub.

Description

Fan impeller, centrifugal axial fan, heat sink and display card module

The present invention relates to a fan impeller, a centrifugal axial fan, a heat sink and a display card module, in particular to a fan impeller having an air outlet smaller than an air inlet, and a centrifugal axial fan, a heat sink and a display card module using the fan impeller .

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 air inlet of the conventional fan is the same size as the air outlet, and the air volume cannot be concentrated to the heat source, and the heat dissipation effect is limited.

The present invention provides a fan impeller with an air outlet smaller than the air inlet, and a centrifugal axial fan, a heat sink and a display card module using the fan impeller to solve the above problems.

According to an embodiment, the fan impeller of the present invention comprises a frame, a plurality of centrifugal blades, a hub, and a plurality of axial fans. The fan frame has an air inlet and an air outlet, and the air outlet is smaller than the air inlet. The centrifugal fan blade is attached to the outer side wall of the fan frame. 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.

According to an embodiment, the centrifugal axial fan of the present invention comprises a stator and a wind Fan impeller. The fan impeller includes a frame, a plurality of centrifugal blades, a hub, a plurality of axial fans, and a magnet. The fan frame has an air inlet and an air outlet, and the air outlet is smaller than the air inlet. The centrifugal fan blade is attached to the outer side wall of the fan frame. 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 magnet is placed on the hub. The hub is rotatably disposed on the stator.

According to another embodiment, the heat sink of the present invention comprises a heat sink, a plurality of heat sink fins, a heat pipe and a centrifugal axial fan. The heat dissipation fins are disposed on the heat sink. The heat pipe has a heat absorption section and a heat dissipation section. The heat absorption section is disposed on the heat dissipation seat, and the heat dissipation section is disposed on the heat dissipation fin. The centrifugal axial fan is disposed on the heat dissipation fins. The centrifugal axial fan comprises a fan impeller, and the fan impeller comprises a frame, a plurality of centrifugal blades, a hub and a plurality of axial fans. The fan frame has an air inlet and an air outlet, and the air outlet is smaller than the air inlet. The centrifugal fan blade is attached to the outer side wall of the fan frame. 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.

According to another embodiment, the display card module of the present invention comprises a display card and a heat sink. The display card contains a display wafer. The heat sink is disposed on the display card. The heat sink comprises a heat sink, a plurality of heat sink fins, a heat pipe and a centrifugal axial fan. The heat sink is disposed on the display wafer. The heat dissipation fins are disposed on the heat sink. The heat pipe has a heat absorption section and a heat dissipation section. The heat absorption section is disposed on the heat dissipation seat for absorbing heat generated by the display wafer, and the heat dissipation section is disposed on the heat dissipation fin. The centrifugal axial fan is disposed on the heat dissipation fins. The centrifugal axial fan comprises a fan impeller, and the fan impeller comprises a frame, a plurality of centrifugal blades, a hub and a plurality of axial fans. The fan frame has an air inlet and an air outlet, and the air outlet is smaller than the air inlet. The centrifugal fan blade is attached to the outer side wall of the fan frame. 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.

In summary, since the air outlet of the fan impeller of the present invention is smaller than the air inlet, the 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 illustrated by the following creations and drawings. The formula is further understood.

1‧‧‧Display Card Module

10‧‧‧ display card

12‧‧‧ Heat sink

100‧‧‧ display chip

120‧‧‧ Heat sink

122‧‧‧Heat fins

124‧‧‧heat pipe

126, 126'‧‧‧ centrifugal axial fan

128‧‧‧ cover

1240‧‧‧heating section

1242‧‧‧heating section

1260, 1260'‧‧‧Fan frame

1261‧‧‧fan impeller

1262‧‧‧ Centrifugal fan blades

1263‧‧‧ Magnet

1264‧‧·wheels

1266‧‧‧Axial fan blades

1268‧‧‧ Stator

1270‧‧‧ inlet

1272‧‧‧air outlet

1274‧‧‧ first inner side

1276‧‧‧Second inner side

1280‧‧ openings

W1, W2‧‧‧ width

‧‧‧‧ angle

H‧‧‧ Height

X-X‧‧‧ hatching

Fig. 1 is a combination diagram of a display card module according to a first embodiment of the present creation.

Figure 2 is an exploded view of the display card module in Figure 1.

Figure 3 is an exploded view of the display card module of Figure 1 from another perspective.

Figure 4 is a cross-sectional view of the display card module taken along line X-X in Figure 1.

Fig. 5 is a schematic view of a centrifugal axial fan according to a second embodiment of the present creation.

Please refer to FIG. 1 to FIG. 4 , FIG. 1 is a combination diagram of the display card module 1 according to the first embodiment of the present invention, and FIG. 2 is an exploded view of the display card module 1 in the first diagram. 3 is an exploded view of the display card module 1 in FIG. 1 at another viewing angle, and FIG. 4 is a cross-sectional view of the display card module 1 taken along line XX in FIG. 1 . As shown in FIGS. 1 to 4, the display card module 1 includes a display card 10 and a heat sink 12. Display card 10 includes a display wafer 100. The heat sink 12 is disposed on the display card 10 for dissipating heat from the display wafer 100 of the display card 10. It should be noted that the heat sink 12 can also be disposed on other electronic components, and is not limited to being disposed on the display card 10.

The heat sink 12 includes a heat sink 120, a plurality of heat sink fins 122, a heat pipe 124, a centrifugal axial fan 126, and a cover 128. In this embodiment, three heat pipes 124 are disposed on the heat sink 120 and the heat dissipation fins 122. It should be noted that the number of heat pipes 124 may be increased or decreased according to practical applications, and is not limited to the embodiment illustrated in the drawings. The heat dissipation fins 122 are disposed on the heat dissipation seat 120. The heat pipe 124 has a heat absorption section 1240 and a heat dissipation section 1242. The heat absorption section 1240 is disposed on the heat dissipation seat 120, and the heat dissipation section 1242 is disposed on the heat dissipation fins 122. The heat absorption section 1240 is for absorbing the heat generated by the display wafer 100 and then conducting the heat to the heat dissipation section 1242. In this embodiment, the bottom of the heat absorption section 1240 can be exposed to the heat sink 120 and coplanar with the bottom of the heat sink 120, so that the heat absorption section 1240 and the heat sink 120 may be attached to the display wafer 100 together. In another embodiment, the heat absorption section 1240 can also be disposed in the heat sink 120 depending on the actual application. In addition, the heat dissipation portion 1242 is disposed in the heat dissipation fin 122. It should be noted that the detailed structural design and working principle of the heat pipe 124 are well known to those skilled in the art and will not be described herein.

The centrifugal axial fan 126 is disposed on the heat dissipation fins 122. In this embodiment, the centrifugal axial fan 126 includes a fan impeller 1261, a magnet 1263, and a stator 1268. The fan impeller 1261 includes a frame 1260, a plurality of centrifugal blades 1262, and a hub (Hub). 1264 and a plurality of axial fan blades 1266. The magnet 1263 is disposed in a hub 1264 of the fan impeller 1261, which is moved by the magnetic field generated by the stator 1268 and drives the fan impeller 1261 to rotate. The fan frame 1260 has an air inlet 1270 and an air outlet 1272, and the air outlet 1272 is smaller than the air inlet 1270. Preferably, the ratio of the width W1 of the air inlet 1270 to the width W2 of the air outlet 1272 may be between 1.11 and 1.16 (ie, 1.11 ≦ W1/W2 ≦ 1.16). In this embodiment, the fan frame 1260 has a first inner side surface 1274 and a second inner side surface 1276, and the first inner side surface 1274 and the second inner side surface 1276 are at an angle α such that the inner side wall of the fan frame 1260 is tapered. Shape, as shown in Figure 4.

The hub 1264 is disposed in the fan frame 1260 and rotatably disposed on the stator 1268. The centrifugal fan blade 1262 is coupled to the outer side wall of the fan frame 1260, and the axial flow fan blade 1266 is coupled to the inner side wall of the fan frame 1260 and the hub 1264. Preferably, the total height H of the fan frame 1260 and the stator 1268 may be between 10 cm and 25 cm. The cover 128 is disposed on the heat dissipation fins 122 and the centrifugal axial fan 126. The cover 128 has an opening 1280, and the position of the opening 1280 corresponds to the position of the air inlet 1270 of the frame 1260.

When the hub 1264 is rotated relative to the stator 1268, the hub 1264 will drive the axial fan blade 1266 and the fan frame 1260 to rotate with the centrifugal fan 1262. At this time, the rotating axial fan blade 1266 blows air from the opening 1280 of the cover 128 and the air inlet 1270. Since the air outlet 1272 is smaller than the air inlet 1270, the air outlet 1272 can effectively blow the air volume blown from the air inlet 1270 to the heat source (that is, the display wafer 100), thereby improving heat radiation. In addition, the rotating centrifugal fan 1262 also blows airflow from the opening 1280 of the cover 128 and blows the airflow to the heat dissipation fins 122 of one side and the heat dissipation section 1242 of the heat pipe 124 to enhance the heat dissipation effect. In other words, the centrifugal axial fan 126 of the present invention has the functions of a centrifugal fan and an axial fan.

It has been experimentally proved that when the ratio of the width W1 of the air inlet 1270 to the width W2 of the air outlet 1272 is between 1.11 and 1.16, and the total height H of the frame 1260 and the stator 1268 is between 10 cm and 25 cm, Better heat dissipation can be obtained, but this creation is not limited to this.

With Figure 4, please refer to Figure 5. Fig. 5 is a schematic view of a centrifugal axial fan 126' according to a second embodiment of the present creation. The centrifugal axial fan 126' is mainly different from the above-described centrifugal axial fan 126 in that the inner side wall of the fan frame 1260' of the centrifugal axial fan 126' is curved. In other words, the inner side wall of the fan frame of the centrifugal axial fan of the present invention may be tapered or curved so that the air outlet 1272 is smaller than the air inlet 1270. It should be noted that the components of the same reference numerals as those shown in FIG. 4 are substantially the same, and will not be described again.

In summary, since the air outlet of the fan impeller of the present invention is smaller than the air inlet, the air outlet can effectively blow the air volume blown into the air inlet to the heat source, thereby improving the heat dissipation effect.

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‧‧‧Display Card Module

10‧‧‧ display card

12‧‧‧ Heat sink

100‧‧‧ display chip

120‧‧‧ Heat sink

122‧‧‧Heat fins

124‧‧‧heat pipe

126‧‧‧ centrifugal axial fan

128‧‧‧ cover

1240‧‧‧heating section

1242‧‧‧heating section

1260‧‧‧Fan frame

1261‧‧‧fan impeller

1262‧‧‧ Centrifugal fan blades

1263‧‧‧ Magnet

1264‧‧·wheels

1266‧‧‧Axial fan blades

1268‧‧‧ Stator

1270‧‧‧ inlet

1272‧‧‧air outlet

1274‧‧‧ first inner side

1276‧‧‧Second inner side

1280‧‧ openings

W1, W2‧‧‧ width

‧‧‧‧ angle

H‧‧‧ Height

Claims (23)

A fan impeller includes: a frame having an air inlet and an air outlet, the air outlet being smaller than the air inlet; a plurality of centrifugal blades connected to the outer side wall of the frame; a hub disposed on the frame And a plurality of axial flow blades connected to the inner side wall of the frame and the hub. The fan impeller according to claim 1, wherein the inner side wall of the fan frame is tapered or curved. The fan impeller of claim 1, wherein the fan frame has a first inner side and a second inner side, the first inner side being at an angle to the second inner side. The fan impeller according to claim 1, wherein a ratio of a width of the air inlet to a width of the air outlet is between 1.11 and 1.16. A centrifugal axial flow fan comprising: a stator; a fan impeller comprising: a frame having an air inlet and an air outlet, the air outlet being smaller than the air inlet; and a plurality of centrifugal blades connected to the fan frame An outer side wall; a hub disposed in the fan frame; a plurality of axial fan blades coupled to the inner side wall of the fan frame and the hub; and a magnet disposed on the hub; wherein the hub is rotatably disposed On the stator. The centrifugal axial fan of claim 5, wherein the total height of the frame and the stator is between 10 cm and 25 cm. The centrifugal axial fan of claim 5, wherein the inner side wall of the fan frame is tapered or curved. The centrifugal axial fan of claim 5, wherein the fan frame has a first inner side and a second inner side, the first inner side being at an angle to the second inner side. The centrifugal axial fan of claim 5, wherein a ratio of a width of the air inlet to a width of the air outlet is between 1.11 and 1.16. A heat dissipating device includes: a heat sink; a plurality of heat sink fins disposed on the heat sink; a heat pipe having a heat absorption section and a heat dissipation section, wherein the heat absorption section is disposed on the heat sink, and the heat dissipation section is disposed on the heat dissipation section And a centrifugal axial fan disposed on the heat dissipation fins, the centrifugal axial fan includes a fan impeller, the fan impeller includes: a frame having an air inlet and an air outlet, The air outlet is smaller than the air inlet; a plurality of centrifugal blades are connected to the outer side wall of the fan frame; a hub is disposed in the fan frame; and a plurality of axial fan blades are connected to the inner side wall of the fan frame Wheel hub. The heat sink of claim 10, wherein the inner side wall of the fan frame is tapered or curved. The heat sink of claim 10, wherein the fan frame has a first inner side and a second inner side, the first inner side being at an angle to the second inner side. The heat dissipation device of claim 10, wherein a ratio of a width of the air inlet to a width of the air outlet is between 1.11 and 1.16. The heat dissipating device of claim 10, wherein the centrifugal axial fan further comprises a stator, the hub is rotatably disposed on the stator, and the total height of the frame and the stator is between 10 cm and 25 cm. . The heat dissipating device of claim 10, further comprising a cover disposed on the heat dissipating fins and the centrifugal axial fan, the cover having an opening, the position of the opening corresponding to the position of the air inlet . The heat sink of claim 10, wherein the centrifugal axial fan further comprises a magnet disposed on the hub. A display card module comprising: a display card comprising a display chip; and a heat sink disposed on the display card, the heat sink comprising: a heat sink disposed on the display wafer; and a plurality of heat sink fins The heat pipe has a heat absorption section and a heat dissipation section. The heat absorption section is disposed on the heat dissipation seat for absorbing heat generated by the display wafer, and the heat dissipation section is disposed on the heat dissipation fins. And a centrifugal axial fan disposed on the heat dissipating fins, the centrifugal axial fan includes a fan impeller, the fan impeller includes: a frame having an air inlet and an air outlet, the air outlet being smaller than the inlet a tuyere; a plurality of centrifugal blades connected to the outer side wall of the frame; a hub disposed in the frame; and a plurality of axial fans connected to the inner side wall of the frame and the hub. The display card module of claim 17, wherein the inner side wall of the fan frame is tapered or curved. The display card module of claim 17, wherein the fan frame has a first inner side and a second inner side, the first inner side being at an angle to the second inner side. The display card module of claim 17, wherein the ratio of the width of the air inlet to the width of the air outlet is between 1.11 and 1.16. The display card module of claim 17, wherein the centrifugal axial fan further comprises a stator, the hub is rotatably disposed on the stator, and the total height of the frame and the stator is between 10 cm and 25 cm. between. The display card module of claim 17, wherein the heat sink further comprises a cover disposed on the heat sink fins and the centrifugal axial fan, the cover having an opening, the position of the opening The position of the air inlet corresponds. The display card module of claim 17, wherein the centrifugal axial fan further comprises a magnet, Placed on the hub.