JP3175224U - Fan module - Google Patents

Abstract

A fan module capable of significantly increasing the air flow of a cross-flow fan and reducing the volume of the fan module is provided.
A fan module (2) includes a heat transfer unit (20), a heat dissipation unit (21), and at least one cross-flow fan (22). One end of the heat transfer unit 20 is stuck on the heat source 24. The heat radiating unit 21 is oppositely connected to the other end of the heat transfer unit 20, and has an air inlet 213 and an air outlet 214 communicating with the air inlet 213. The cross-flow fan 22 is disposed to face the heat radiating unit 21 and includes a housing 221 and a centrifugal fan blade group 222. The housing 221 includes an exhaust side 2212 that is oppositely connected to the intake port 213, a plurality of intake sides 2211, and a plurality of housing portions 2213. The plurality of intake sides 2211 are respectively provided between the plurality of casing portions 2213 and communicate with the opposing exhaust side 2212.
[Selection] Figure 2

Description

  The present invention relates to a fan module, and in particular, the air volume of at least one cross-flow fan can be significantly increased, the volume of the fan module can be reduced, and the heat dissipation performance can be improved. The present invention relates to a fan module that can effectively improve the problem of vibration and noise caused by a blade being too long.

  With the progress of science and technology, the transistor density of various chips (for example, CPU, execution unit, etc.) is increasing. Further, as the data processing speed increases, the consumed power and the generated heat are also relatively increased. Therefore, in order to stabilize the operation of the CPU, a highly efficient heat radiating unit is very important.

  In order for the heat dissipation unit to maintain a highly efficient heat dissipation function, the volume and weight of the heat dissipation unit must be increased. However, notebook computers, tablet computers, smartphones, portable electronic devices, and the like are limited in design because space is limited.

  Please refer to FIG. As shown in FIG. 1, the conventional fan module 1 includes a centrifugal fan 10, a heat pipe 11, and a heat dissipation unit 12. The conventional fan module 1 causes an air flow by using the centrifugal fan 10. Thereby, the heat on the heat radiating unit 12 is removed, and cooling is performed. The performance of the fan module 1 is determined by the wind pressure and air volume of the centrifugal fan 10 and the heat exchange area of the heat radiating unit 12. The larger the heat exchange area of the heat radiating unit 12 (for example, the longer the length of the heat radiating fins), the better the effect of the heat radiating unit 12 discharging heat, but the volume of the entire fan module becomes excessive. For this reason, the weight reduction and thickness reduction which a notebook type personal computer pursues cannot be realized.

  A person skilled in the art has miniaturized the size of the centrifugal fan by minimizing each member as much as possible in order to reduce the weight and thickness of the fan module. However, when the volume is reduced, the air volume of the centrifugal fan is also reduced, so that the effect of exhausting heat is greatly affected. In addition, the micronized centrifugal fan has a thin fan blade and a large area, and thus generates a lot of vibration and abnormal noise.

  Therefore, it has been required to effectively improve the performance of the heat dissipation unit without increasing the volume of the heat dissipation unit as much as possible.

The conventional fan module has the following disadvantages (1) to (3).
(1) The volume is large.
(2) Inferior heat dissipation capability.
(3) Vibration and abnormal noise are likely to occur.

The main object of the present invention is to dispose a fan module capable of greatly increasing the air flow of the once-through fan and reducing the volume of the fan module by disposing at least one once-through fan in the fan module. It is to provide.
Another object of the present invention is to improve the heat dissipation performance and to effectively improve the problem of vibration and abnormal noise caused by the fan blades being too long in the prior art. To provide a module.

  In order to solve the above problems, according to a first embodiment of the present invention, a fan module including a heat transfer unit, a heat dissipation unit, and at least one cross-flow fan, the heat transfer unit having one end portion. The heat dissipating unit is affixed on a heat source, and is oppositely connected to the other end of the heat transfer unit, and further includes an air inlet and an air outlet that communicates with the air inlet. A housing and a centrifugal fan blade group disposed opposite to the heat radiating unit, the housing including an exhaust side connected to the intake port, a plurality of intake sides, and a plurality of housing parts, The plurality of intake sides are respectively provided between the plurality of casing portions and communicated with the opposing exhaust side, and the plurality of casing portions each have an accommodation groove, The plurality of receiving grooves communicate with each other and are accommodated. Defining a space, said housing space is on communicating with the exhaust side and the intake side, the fan module, characterized in that the centrifugal fan blades group is accommodated is provided.

  Moreover, it is preferable that the both ends of the said housing | casing have a 1st separating plate and a 2nd separating plate, and an axial center hole is provided in the said 1st separating plate and the said 2nd separating plate, respectively. .

  The centrifugal fan blade group preferably includes an axial center and a plurality of hubs, and the axial center penetrates the hub and penetrates the axial hole.

  Further, it is preferable that the plurality of hubs have a plurality of fan blades, respectively, and the plurality of fan blades are circularly arranged around the shaft center and accommodated in the accommodating concave groove.

  Moreover, it is preferable that the said heat transfer unit has a heat absorption part and a thermal radiation part, the said heat absorption part is affixed on the said heat source, and the said thermal radiation part is oppositely connected to the said thermal radiation unit.

  The cross-flow fan preferably includes at least one side plate, and the side plate is disposed on the exhaust side.

  Moreover, it is preferable that the said heat radiating unit is a member which has a heat radiating fin group, a heat radiator, or heat radiation.

  The heat transfer unit is preferably a heat pipe, a plate heat pipe, or a member having heat transfer properties.

  The heat radiating unit may include a plurality of heat radiating fins, and a guide channel may be formed between the plurality of heat radiating fins, and the guide channel may communicate with the inlet and the exhaust. preferable.

  The cross-flow fan is preferably provided with a motor, and the motor is preferably disposed on the first separation plate or the second separation plate.

  The fan module of the present invention can greatly increase the air volume of the cross-flow fan and reduce the volume even in a situation where space is limited. Furthermore, it is possible to effectively improve the problem that the fan blades oscillate due to being too long and generate vibration and noise in the prior art.

It is a perspective view which shows the conventional fan module. 1 is an exploded perspective view showing a fan module according to a first embodiment of the present invention. 1 is a perspective view illustrating a fan module according to a first embodiment of the present invention. It is a disassembled perspective view which shows the fan module by 2nd Embodiment of this invention. It is a perspective view showing a fan module according to a second embodiment of the present invention. It is a perspective view showing a fan module according to a third embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited thereby.

(First embodiment)
Please refer to FIG. 2 and FIG. As shown in FIGS. 2 and 3, the fan module 2 according to the first embodiment of the present invention includes a heat transfer unit 20, a heat dissipation unit 21, and at least one cross-flow fan 22.

  The heat transfer unit 20 includes a heat absorption part 201 and a heat dissipation part 202. The heat absorption part 201 is attached on the heat source 24 (for example, CPU, north bridge chip, south bridge chip, graphic chip, execution unit, etc.). The function of the heat absorbing unit 201 is to absorb heat generated from the heat source 24 and transmit it to the heat radiating unit 202. The heat transfer unit 20 is a heat pipe, a plate heat pipe, or a member having heat transfer properties. In this embodiment, although a heat pipe is illustrated, it is not limited only to this.

  The heat dissipating unit 21 is connected to the heat dissipating part 202 of the heat transfer unit 20 so as to be opposed thereto. The heat radiating unit 21 has an air inlet 213 and an air outlet 214 communicating with the air inlet 213. The heat dissipating unit 21 is a heat dissipating fin group, a heat dissipating member, or a member having heat dissipating properties. In the present embodiment, the radiating fin group is exemplified, but the present invention is not limited to this. The heat dissipation unit 21 has a plurality of heat dissipation fins 211. A guide channel 212 is formed between the heat radiating fins 211. The guide channel 212 communicates with the intake port 213 and the exhaust port 214.

  The cross-flow fan 22 is disposed opposite to the heat dissipation unit 21. The cross-flow fan 22 includes a housing 221 and a centrifugal fan blade group 222. The housing 221 includes an exhaust side 2212 that is oppositely connected to the air inlet 213 of the heat dissipation unit 21, a plurality of air intake sides 2211, and a plurality of housing portions 2213. The plurality of intake sides 2211 are provided between the plurality of housing portions 2213 and communicate with the opposing exhaust side 2212. The plurality of housing portions 2213 each have a storage groove 2213a. The plurality of storage grooves 2213a communicate with each other and define a storage space 2214. That is, the accommodation space 2214 communicates with the exhaust side 2212 and the intake side 2211. Centrifugal fan blade group 222 is housed in housing space 2214.

  The centrifugal fan blade group 222 has an axis 2221 and a plurality of hubs 2223. Each of the plurality of hubs 2223 has a plurality of fan blades 2223a. The plurality of fan blades 2223 a are provided in an annular shape around the shaft center 2221 and are housed in the housing concave grooves 2213 a of the housing portion 2213. Both ends of the housing 221 have a first separation plate 2215 and a second separation plate 2216. The first separation plate 2215 and the second separation plate 2216 each have an axial hole 2217. The shaft center 2221 passes through the hub 2223, and penetrates the shaft hole 2217.

  The cross-flow fan 22 is provided with a motor 23. The motor 23 is disposed on the first separation plate 2215 or the second separation plate 2216 and is connected to the centrifugal fan blade group 222. The motor 23 is used to drive and rotate the centrifugal fan blade group 222.

  When the motor 23 of the cross-flow fan 22 rotates the centrifugal fan blade group 222, first, external fluid is introduced into the plurality of receiving grooves 2213a from the plurality of intake sides 2211. Next, the fluid passes through the plurality of hubs 2223 and is discharged from the exhaust side 2212 into the air inlet 213 of the heat radiating unit 21 facing the fluid. The discharged fluid flows in the direction of the exhaust port 214 through the guide channel 212 of the radiating fin 211. At this time, the fluid discharges heat transferred from the heat radiating unit 202 to the heat radiating fins 211 from the exhaust port 214. Thereby, heat dissipation performance can be improved.

  Further, the fan module 2 of the present invention can extend the centrifugal fan blade group 222 and the shaft center 2221 in the lateral direction in a limited space. Thereby, since the air volume of the once-through fan 22 increases significantly, the heat dissipation performance can be improved and the volume of the fan module 2 can be effectively reduced. Further, by adopting a long fan blade in order to improve the heat dissipation performance in the prior art, it is possible to effectively improve the problem that the fan blade shakes and generates vibration and noise.

(Second Embodiment)
Please refer to FIG. 4 and FIG. As shown in FIGS. 4 and 5, the fan module according to the second embodiment of the present invention has some members and corresponding relationships between the members that are the same as those in the first embodiment. Not to mention. In the fan module according to the second embodiment of the present invention, the cross-flow fan 22 has at least one side plate 2218. The side plate 2218 is disposed on the exhaust side 2212 and is disposed opposite to the air inlet 213 of the heat radiating unit 21. Thereby, when the motor 23 of the cross-flow fan 22 drives and rotates the centrifugal fan blade group 222, first, external fluid is introduced into the plurality of recessed grooves 2213a from the plurality of intake sides 2211. Next, the fluid passes through the plurality of hubs 2223 and is discharged into the intake port 213 of the opposing heat dissipation unit 21. The discharged fluid flows in the direction of the exhaust port 214 through the guide channel 212 of the radiating fin 211. At this time, the fluid exhausts heat from the exhaust port 214. Thereby, heat dissipation performance is improved.

(Third embodiment)
Please refer to FIG. As shown in FIG. 6, the fan module according to the third embodiment of the present invention has the same members and corresponding relationships between the members as in the first and second embodiments. I won't repeat it. In the fan module according to the third embodiment of the present invention, a plurality of cross-flow fans 22 are arranged in parallel. Thereby, like the above-mentioned other embodiments, the heat dissipation performance is enhanced, and the fluid discharges heat from the exhaust port 214 of the heat dissipation unit 21. In the present embodiment, an example in which two cross-flow fans 22 are arranged in parallel is illustrated, but the present invention is not limited to this.

As can be seen from the above, the fan module of the present invention has the following advantages (1) to (3), unlike the prior art.
(1) The volume can be greatly reduced.
(2) Generation of vibration and abnormal noise can be reduced.
(3) The heat dissipation performance can be improved.

  The preferred embodiments of the present invention have been disclosed as described above so that those skilled in the art can understand them, but these do not limit the present invention in any way. Various changes and modifications can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the utility model registration claim of the present invention should be broadly interpreted including such changes and modifications.

2 Fan Module 20 Heat Transfer Unit 21 Heat Dissipation Unit 22 Cross-flow Fan 23 Motor 24 Heat Source 201 Heat Absorption Part 202 Heat Dissipation Part 211 Heat Dissipation Fin 212 Guide Flow Path 213 Air Intake Port 214 Air Exhaust Port 221 Housing 222 Centrifugal Fan Blade Group 2211 Air Intake Side 2212 Exhaust Side 2213 Housing 2213a Housing groove 2214 Housing space 2215 First separation plate 2216 Second separation plate 2217 Axle hole 2218 Side plate 2221 Axle 2223 Hub 2223a Fan blade

Claims (10)

A fan module comprising a heat transfer unit, a heat dissipation unit and at least one cross-flow fan,
The heat transfer unit is provided with one end on a heat source,
The heat radiating unit is connected to the other end of the heat transfer unit, 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 housing and a centrifugal fan blade group.
The casing includes an exhaust side that is connected to the intake port, a plurality of intake sides, and a plurality of casing portions.
The plurality of intake sides are respectively provided between the plurality of housing portions and communicate with the opposed exhaust side,
Each of the plurality of housing portions has an accommodation groove,
The plurality of receiving grooves communicate with each other to define a receiving space;
The housing module communicates with the exhaust side and the intake side and houses the centrifugal fan blade group. Both ends of the housing have a first separation plate and a second separation plate,
2. The fan module according to claim 1, wherein each of the first separation plate and the second separation plate is provided with an axial hole. The centrifugal fan blade group has an axis and a plurality of hubs,
3. The fan module according to claim 2, wherein the shaft center passes through the hub and extends through the shaft hole. Each of the plurality of hubs has a plurality of fan blades;
4. The fan module according to claim 3, wherein the plurality of fan blades are provided around the shaft center and are accommodated in the accommodating concave groove. 5. The heat transfer unit has a heat absorption part and a heat dissipation part,
The endothermic part is provided on the heat source,
The fan module according to claim 1, wherein the heat radiating portion is connected to the heat radiating unit so as to face the heat radiating unit. The cross-flow fan has at least one side plate,
The fan module according to claim 1, wherein the side plate is disposed on the exhaust side.   The fan module according to claim 1, wherein the heat dissipating unit is a heat dissipating fin group, a heat dissipator, or a heat dissipating member.   The fan module according to claim 1, wherein the heat transfer unit is a heat pipe, a plate heat pipe, or a member having heat transfer properties. The heat dissipating unit has a plurality of heat dissipating fins,
Between the plurality of radiating fins, there is a guide channel,
The fan module according to claim 7, wherein the guide channel communicates with the intake port and the exhaust port. The cross-flow fan is provided with a motor,
The fan module according to claim 2, wherein the motor is disposed on the first separation plate or the second separation plate.

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