TW201333330A - Fan module - Google Patents

Abstract

A fan module includes a heat transfer unit, a heat radiation unit, and at least one cross-flow fan. The heat radiation unit has an air-in side and an air-out side. The cross-flow fan is located against the heat radiation unit, and includes a frame and a centrifugal fan blade assembly. The frame has an air outlet, a plurality of air inlets, and a plurality of frame sections. The frame sections respectively have a receiving recess therein, and the receiving recesses are communicable with one another to together define a receiving space for receiving the centrifugal fan blade assembly therein. With the above arrangements, the cross-flow fan can create increased air flow volume, the space occupied by the fan module can be reduced, and upgraded heat dissipation performance can be achieved.

Description

Fan module

The invention relates to a fan module, in particular to a gas flow which can greatly increase the flow rate of at least one cross flow fan and reduce the volume of the fan module, and can also improve the heat dissipation performance and effectively improve the vibration caused by the excessive length of the conventional fan blade. A fan module with an abnormal sound phenomenon.

With the continuous advancement of the electronic technology industry, the density of transistors of various types of wafers (such as central processing units, execution units, etc.) is increasing. Although the speed of data processing is getting faster and faster, the power consumed and the amount of heat generated are relatively increased. In order to make the central processing unit stable, high-efficiency heat dissipation units have become an important issue at present.

In order to maintain high-efficiency heat dissipation, the size and weight of the heat-dissipating unit have to be heavier and heavier. However, in the design of notebook computers, tablet computers, smart phones, smart handheld electronic devices, etc., space constraints It has always been the biggest bottleneck in design.

Referring to FIG. 1 , a conventional fan module 1 includes a centrifugal fan 10 , a heat pipe 11 , and a heat dissipation unit 12 . The conventional fan module 1 uses a centrifugal fan 10 to drive air flow. The heat of the heat dissipating unit 12 is taken away to achieve the purpose of cooling, and the wind pressure, the air volume of the centrifugal fan 10, and the heat exchange area of the heat dissipating unit determine the performance of the fan module 1; The larger the heat exchange area, the longer the fin length of the heat sink fin, although the heat dissipating unit 12 can discharge the heat better, but the overall length of the fan module is too large due to the increase of the fin length; The light, thin, short, and small spiritual demands pursued by notebook computers are contrary to each other.

In order to achieve the above-mentioned light, thin, short, and small spiritual demands, the operators engaged in related industries have minimized the components as much as possible, so the size of the centrifugal fan is also miniaturized, but the volume is reduced. Centrifugal fans also have a relatively small flow rate, which greatly affects the heat output, and the miniaturized centrifugal fan produces more vibration and abnormal sound due to the thin blade thickness and large area.

Therefore, how to improve the efficiency of the heat dissipation unit without increasing the volume of the heat dissipation unit as much as possible has become the direction of efforts of many related industries.

As mentioned above, the conventional disadvantages have the following disadvantages:

1. Larger size;

2. Poor heat dissipation;

3. Easy to generate vibration and abnormal sound.

Therefore, how to solve the above problems and problems in the past, that is, the inventors of this case and the relevant manufacturers engaged in this industry are eager to study the direction of improvement.

Therefore, in order to effectively solve the above problems, the main object of the present invention is to provide a fan module in which at least one cross flow fan is disposed in a fan module, which can greatly increase the airflow flow of the cross flow fan and reduce the volume.

A secondary object of the present invention is a fan module that can improve heat dissipation performance and effectively improve vibration and abnormal sound caused by yaw caused by excessive blade length.

In order to achieve the above objective, the present invention is a fan module, comprising: a heat conducting unit, a heat dissipating unit and at least one cross flow fan, wherein one end of the heat conducting unit is attached to a heat source, and the heat dissipating unit is coupled to the heat conducting unit The other end is connected to each other, and has an air inlet and an air outlet that communicates with the air inlet. The cross flow fan is disposed opposite to the heat dissipation unit, and has a frame body and a centrifugal fan blade group. The air inlet side, the plurality of air inlet sides, and the plurality of frame portions are connected to the air inlet, and the air inlet sides are disposed between the frame portions and communicate with the opposite air outlet sides, and the frame portions have The accommodating recesses communicate with each other and define a receiving space, the accommodating space is connected to the air outlet side and the air inlet side, and is configured to accommodate the centrifugal fan blade group.

Through the design of the aforementioned fan module, under the limitation of space, the airflow flow of the cross flow fan can be effectively increased, and the volume of the fan module can be reduced; in addition, the conventional fan blade can be effectively improved. The phenomenon of vibration and abnormal sound caused by excessive yaw amount.

The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings.

2A and 2B are an exploded perspective view and a perspective view of a fan module according to a first embodiment of the present invention. As shown in the figure, a fan module 2 includes a heat conducting unit 20 and a heat dissipation unit. The unit 21 and the at least one cross-flow fan 22, the heat-conducting unit 20 has a heat-absorbing portion 201 and a heat-dissipating portion 201, and the heat-absorbing portion 201 is attached to a heat source 24 (such as a central processing unit, a north-south bridge chip, a drawing chip, or an execution unit). On the unit, etc., and the function of the heat absorbing portion 201 is to absorb the heat generated by the heat source 24 and transmitted to the heat radiating portion 202; and the heat conducting unit 20 can be a heat pipe or a hot plate or a component having thermal conductivity. First, in the present embodiment, a heat pipe is taken as an explanation, but it is not limited.

The heat dissipating unit 21 is connected to the heat dissipating portion 202 of the heat conducting unit 20, and has an air inlet 213 and an air outlet 214 that communicates with the air inlet 213. The heat dissipating unit 21 can be a heat sink fin group or The heat sink or the heat dissipating component is used as the description in the embodiment, but is not limited thereto; the heat dissipating unit 21 has a plurality of heat dissipating fins 211, and the heat dissipating fins A flow guiding channel 212 is formed between the two electrodes 211, and the air guiding channel 212 communicates with the air inlet 213 and the air outlet 214.

The cross-flow fan 22 is disposed opposite to the heat dissipating unit 21, and the cross-flow fan 22 has a frame body 221 and a centrifugal fan blade group 222. The frame body 221 is provided with a pair of air inlets 213 of the heat dissipating unit 21 The wind side 2212, the plurality of air inlet sides 2211, and the plurality of frame portions 2213 are formed between the frame portions 2213 and communicate with the opposite air outlet sides 2212, and the frame portions 2213 have one The receiving recesses 2213a are connected to each other and define a receiving space 2214. The receiving space 2214 is connected to the air outlet side 2212 and the air inlet side 2211, and the receiving space 2214 is used for receiving The centrifugal blade group 222 is provided.

Furthermore, the centrifugal fan blade group 222 has a shaft center 2221 and a plurality of fan impellers 2223, and the fan blades 2223 respectively have a plurality of fan blades 2223a, and the ring is disposed on the circumferential side of the shaft center 2221 and is oppositely accommodated in The frame portion 221 has a first partition 2215 and a second partition 2216. The first and second partitions 2215 and 2216 respectively have an axis. The core hole 2217, the shaft 2221 described above passes through the fan impeller 2223 and extends through the shaft hole 2217.

In addition, the cross flow fan 22 is further provided with a motor 23 disposed at any position of the first partition 2215 or the second partition 2216 and connected to the centrifugal blade set 222 for driving The centrifugal fan blade group 222 is rotated. Therefore, when the motor 23 of the cross flow fan 22 drives the centrifugal fan blade group 222 to rotate through the fan module 2, the external fluid is first introduced to the air inlet side 2211 through the air inlet side 2211. The accommodating recesses 2213a are then discharged through the fan impeller 2223 through the air outlet side 2212 to the air inlet 213 of the opposite heat dissipating unit 21, and the discharged fluid is transmitted through the heat dissipating fins 211. The flow path 212 flows in the direction of the air outlet 214, and the heat that the fluid conducts the heat dissipation portion 202 to the heat dissipation fin 211 is discharged from the air outlet 214 to increase heat dissipation performance and achieve heat dissipation. .

In addition, the structure of the present invention can be extended in a limited space, and the centrifugal fan blade group 222 and the axis 2221 can still extend laterally, and the flow of the airflow is greatly increased by the cross flow fan 22 to improve heat dissipation. In addition to the performance, the volume of the fan module 2 can be effectively reduced; in addition, the phenomenon of vibration and abnormal sound caused by the yaw amount generated by the conventional fan module in order to increase the heat dissipation performance can be improved.

3A and 3B are perspective exploded views and a perspective view of a second embodiment of the fan module of the present invention, the corresponding components of the fan module and the corresponding relationship between the components and the aforementioned fan. The module is the same, so it will not be described here. However, the main difference between the fan module and the foregoing is that the cross flow fan 22 has at least one side plate 2218, and the side plate 2218 is disposed at the air outlet side 2212. And is disposed at the air inlet 213 of the heat dissipating unit 21; when the motor 23 of the cross flow fan 22 drives the centrifugal fan blade group 222 to rotate, the external fluid is introduced into the air inlet side 2211 through the air inlet side 2211. The accommodating groove 2213a is received, and then the fluid is discharged into the air inlet 213 of the opposite heat dissipating unit 21 through the fan impeller 2223, and the fluid flows through the air guiding channel 212 of the heat dissipating fin 211 toward the air outlet 214. At the same time, the fluid will carry heat to the air outlet 214 for discharging, thereby increasing the heat dissipation effect and achieving the heat dissipation effect.

Finally, please refer to FIG. 4 , which is a perspective view of a third embodiment of the fan module of the present invention. The corresponding relationship between the components and the components of the fan module is the same as that of the fan module. Therefore, the main difference between the fan module and the foregoing is that the cross flow fan 22 can be stacked side by side at the same time, and the fluid can also be carried to the air outlet 214 of the heat dissipation unit 21. The discharge operation is performed to achieve the heat dissipation performance. In the present embodiment, the two cross flow fans 22 are arranged side by side as an explanation, but are not limited thereto.

As described above, the present invention has the following advantages over the prior art:

1. Significantly reduce the volume;

2. Reduce the generation of vibration and abnormal sound;

3. Increase heat dissipation.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made by the scope of the present application should remain within the scope of the patent of the present invention.

2. . . Fan module

20. . . Thermal conduction unit

201. . . Heat absorption

202. . . Heat sink

twenty one. . . Cooling unit

211. . . Heat sink fin

212. . . Guide channel

213. . . Air inlet

214. . . Air outlet

twenty two. . . Cross flow fan

221. . . framework

2211. . . Wind side

2212. . . Ventilation side

2213. . . Frame

2213a. . . Accommodating groove

2214. . . Capacity space

2215. . . First partition

2216. . . Second partition

2217. . . Axial hole

2218. . . Side panel

222. . . Centrifugal fan blade set

2221. . . Axis

2223. . . Fan impeller

2223a. . . Fan blade

twenty three. . . motor

twenty four. . . Heat source

1 is a perspective assembled view of a conventional fan module; FIG. 2A is an exploded perspective view of a first embodiment of the fan module of the present invention; and FIG. 2B is a perspective combination of a first embodiment of the fan module of the present invention; Figure 3A is a perspective exploded view of a second embodiment of the fan module of the present invention; Figure 3B is a perspective assembled view of a second embodiment of the fan module of the present invention; and Figure 4 is a fan module of the present invention A three-dimensional combination diagram of the third embodiment.

2. . . Fan module

20. . . Thermal conduction unit

201. . . Heat absorption

202. . . Heat sink

twenty one. . . Cooling unit

211. . . Heat sink fin

212. . . Guide channel

213. . . Air inlet

214. . . Air outlet

twenty two. . . Cross flow fan

221. . . framework

2211. . . Wind side

2212. . . Ventilation side

2213. . . Frame

2213a. . . Accommodating groove

2214. . . Capacity space

2215. . . First partition

2216. . . Second partition

2217. . . Axial hole

222. . . Centrifugal fan blade set

2221. . . Axis

2223. . . Fan impeller

2223a. . . Fan blade

twenty three. . . motor

twenty four. . . Heat source

Claims (10)

A fan module includes: a heat conducting unit, one end of which is attached to a heat source; a heat dissipating unit is connected to the other end of the heat conducting unit, and has an air inlet and a connecting air inlet And the at least one cross-flow fan is disposed opposite to the heat dissipating unit, and has a frame body and a centrifugal fan blade group, wherein the frame body is provided with a pair of air inlet sides and a plurality of air inlet sides of the air inlet a plurality of frame portions, the air inlet sides are disposed between the frame portions and communicate with the opposite air outlet sides, and the frame portions have a receiving groove, and the receiving grooves communicate with each other and define a common The accommodating space is connected to the air outlet side and the air inlet side, and is configured to accommodate the centrifugal fan blade group. The fan module of claim 1, wherein the frame has a first partition and a second partition at both ends, and the first and second partitions are respectively provided with an axial hole. The fan module of claim 2, wherein the centrifugal fan blade group has an axial center and a plurality of fan impellers, and the axial center penetrates the fan impeller and extends the axial hole. The fan module of claim 3, wherein the fan blades respectively have a plurality of blades, and the ring is disposed on a circumferential side of the shaft and is oppositely received in the receiving groove. The fan module of claim 1, wherein the heat conducting unit further has a heat absorbing portion and a heat dissipating portion, wherein the heat absorbing portion is attached to the heat source, and the heat dissipating unit is connected to the heat dissipating portion. Assume. The fan module of claim 1, wherein the cross flow fan further has at least one side plate disposed at the air outlet side position. The fan module of claim 1, wherein the heat dissipating unit is any one of a heat dissipating fin set or a heat sink or a heat dissipating component. The fan module of claim 1, wherein the heat conducting unit is any one of a heat pipe or a hot plate or a thermally conductive element. The fan module of claim 7, wherein the heat dissipating unit has a plurality of heat dissipating fins, and a heat guiding fin is formed between the heat dissipating fins, and the air guiding channel communicates with the air inlet and the air outlet . The fan module of claim 2, wherein the cross flow fan is further provided with a motor disposed in any one of the first partition or the second partition.