TWM481295U - Discrepancy material frame structure for tandem type fan - Google Patents

Description

Dissimilar material frame structure of tandem fan

The present invention is a frame structure, and particularly relates to a dissimilar material frame structure of a tandem fan that reduces resonance.

At present, the material used in the fan frame can be roughly divided into a metal frame made of die-casting and a plastic frame made of injection molding. Die-cast metal frame bodies such as aluminum are expensive because of the high cost of materials used. The injection molded plastic frame, such as PBT, PA66 and PPE, is much cheaper than the metal material, so it is widely used.

Currently, the fan is in the form of a single fan. The fan frame is made of a single plastic material, such as PBT or PA66 or PPE. There are also series fans, the material of the two series of fan frames is the same material and composition, for example, the two frame frames are PBT or PA66 or PPE.

However, regardless of the fan type, the fan frame material and composition are the same. Therefore, when the excitation frequency of the fan is close to the natural frequency of the fan frame during operation, the fan will be seriously resonated and the noise will be caused by the pair. As a result, various adverse effects on the assembly thereof result in poor system hard disk reading efficiency and affect the life of the system and the fan.

Therefore, how to solve the resonance problem is to actively solve the goal in this field.

In view of the above problems, the main purpose of this creation is to provide a series-connected fan with a series of fan frames connected in different materials. The vibration frequencies of different materials are different to reduce the resonance and avoid the same vibration frequency.

In order to achieve the above object, the present invention provides a dissimilar material frame structure of a tandem fan, comprising: a first fan, wherein the first fan frame is composed of a first plastic material; a second fan, comprising a second frame made of a second plastic material, the second frame of the second plastic material being connected in series with the first frame of the first plastic material; wherein the first frame The composition of the material is different from the composition of the second material, wherein the first plastic material is one of PBT, PA66 and PPE, PA, PC, ABS, PPS, and the second plastic material includes PBT, PA66 and PPE, PA, PC, ABS, PPS, another one. And the first fan frame generates a first vibration frequency, the second frame frame generates a second vibration frequency, and the first vibration frequency is different from the second vibration frequency.

The first fan frame includes a first port and a second port respectively located on opposite sides of the first frame, and a first channel communicates with the first port and the second port, a first base The seat is located in the first flow path, and a first fan wheel is disposed on the first base.

The second frame includes a third port and a fourth port respectively located on opposite sides of the second frame, and a second channel communicates with the third port and the fourth port, and a second port The base is located in the second flow path, and a second fan wheel is disposed on the second base.

With the above structure, the creation can indeed reduce the resonance and remove the vibration frequency.

10‧‧‧First fan

11‧‧‧First frame

12‧‧‧ first port

13‧‧‧second port

14‧‧‧First fan

15‧‧‧First base

16‧‧‧First runner

20‧‧‧second fan

21‧‧‧second frame

22‧‧‧ third port

23‧‧‧fourth port

24‧‧‧Second fan

25‧‧‧Second base

26‧‧‧Second runner

The following figures are intended to make the present invention easier to understand, and the drawings are described in detail herein and form part of the specific embodiments. Through the specific embodiments herein and with reference to the corresponding drawings, the specific embodiments of the present invention are explained in detail, and the function principle of the creation is explained.

1A is a schematic exploded view of the structure of the series-connected fan; FIG. 1B is a schematic diagram of the combination of the structure of the series-connected fan; FIG. 1C is a schematic plan view of the structure of the serial-connected fan; The figure is a schematic view of the XX section of Fig. 1C; the third figure is a schematic view of the YY section of Fig. 1C; and Fig. 4A is a schematic diagram of the vibration of the fan frame of the conventional tandem fan and the conventional fan during operation. Figure 4B is a partial interval diagram of Figure 4A.

The preferred embodiment of the present invention will be described below with reference to the related drawings, in which the same elements will be The same component symbols are explained.

1A is a schematic exploded view of the structure of the series-connected fan; FIG. 1B is a schematic diagram of the combination of the structure of the series-connected fan; FIG. 1C is a schematic plan view of the structure of the serial-connected fan; The figure is a schematic view of the XX section of Fig. 1C; the third figure is a schematic view of the YY section of Fig. 1C.

As shown in FIGS. 1A to 1C and FIGS. 2 and 3, the dissimilar material frame structure of the tandem fan of the present invention includes a first fan 10 connected in series with a second fan 20, and the first fan 10 includes A first frame 11 is formed of a first type of plastic material, and a first port 12 and a second port 13 are respectively disposed on opposite sides of the first frame 11, and a first channel 16 is connected. The first port 12 and the second port 13 are disposed in the first channel 15 and adjacent to the second port 13. The first base 15 is provided with a plurality of radial shapes on the outer circumference. The support rib is connected to the inner wall of the first frame 11, and a first fan 14 is disposed on the first base 15 to be rotatable on the first base 15.

The second fan 20 includes a second frame 21 and a second port 23 and a fourth port 23 on opposite sides of the second frame 21, respectively. A second flow path 26 is connected to the third through hole 22 and the fourth through hole 23, and a second base 25 is located in the second flow path 26 and adjacent to the third through hole 22, the second base 25 A plurality of radial support ribs are connected to the inner wall of the second frame 21, and a second fan wheel 24 is disposed on the second base 25 to be rotatable on the second base 25.

The second port 13 of the first fan 10 corresponds to the third port 22 adjacent to the second fan 20, and the first channel 16 communicates with the second channel 26, and when the first and second fans 14, 24 rotate, The fluid flows through the first port 12, the second port 13, the third port 22, and the fourth port 23. The means for concatenating the first fan 10 and the second fan 20 includes any of the currently known techniques, such as providing a docking element on the opposite side of the two fans 10, 20, or using two locking elements corresponding to the two fans 10, 20. The four corner holes then run through the hole or glue, etc.

In particular, the first plastic material is different from the second plastic material. The first plastic material is PBT (Polybutylene Terephthalate, Polybutylene Terephthalate), PA66 (Polyamide 66). Resin; polyamine 66) and PPE (polyphenylene ether), PA (Polyamide, polyamine), PC (Polycarbonate, polycarbonate resin), ABS (Acrylonitrile-Butadene-Styrene, acrylonitrile-butadiene-benzene Ethylene copolymer) One of PPS (Polyphenylene Sulfide Ether, polyphenylene sulfide), the second plastic material is PBT, PA66 and PPE, PA, PC, ABS, PPS. In order to make it clear whether the composition of the material in the figure is different or the same, the same material uses the same hatching, and different materials are composed of different hatching. In the figure, the second frame in which the first frame is made of the PA66 material is a PBT material, but in another embodiment, the second fan that can be a PBT material is a PA66 material.

Since the plastic material of the first frame 11 and the plastic material composition of the second frame 21 are different, when the first and second fans 14 and 24 are operated, the first frame 14 generates a first vibration frequency, and the second The fan frame 24 produces a second vibration frequency that is different from the second vibration frequency.

Furthermore, the first pedestal 15 and the second pedestal 25 can also serve as heat dissipation, in addition to supporting the first and second fan wheels 14 and 24, so that the first pedestal 15 can be The first frame 11 is made of the same first plastic material or made of a metal material such as aluminum or copper. The same second base 25 may be the same second plastic material as the second frame 21 or made of metal such as aluminum or Copper composition.

Please refer to Figures 4A and 4B for a comparison of the vibration of the fan frame to which the present fan frame is applied and the fan frame of the conventional fan. The curve F1 indicates that the conventional tandem fan frame is a single PBT material. The curve F2 indicates that the conventional tandem fan frame is a single PA66 material; the curve F3 indicates that the first fan frame 11 of the first fan 10 of the present creation is the second fan frame 21 of the PA66 second fan 20 is PBT; the curve F4 indicates the present The first fan frame 11 for creating the first fan 10 is the PBT second fan frame 21 for the PA 66. The horizontal data of Fig. 4A indicates the frequency to 5000 Hz, the vertical data indicates the vibration g value, and the 4B chart is the enlarged view of the 4A map 0 to 1600 Hz interval. It can be seen from these two figures that the overall performance of the vibration g value corresponding to the curve F3 representing the creation at each frequency is lower than the conventional curves F1 and F2; however, it is also possible that the result of F4 is not Greatly improve vibration as expected.

In summary, the present invention provides a tandem fan in which fan frames are connected in different materials. The vibration frequency of the material is different to reduce the resonance and remove the vibration frequency.

Although the present invention is disclosed in the above embodiments, it is not intended to limit the present invention, and any person skilled in the art can make various changes and refinements without departing from the spirit and scope of the present invention. The scope of the patent application is subject to the provisions of the attached patent application.

11‧‧‧First frame

12‧‧‧ first port

13‧‧‧second port

14‧‧‧First fan

15‧‧‧First base

16‧‧‧First runner

21‧‧‧second frame

22‧‧‧ third port

23‧‧‧fourth port

24‧‧‧Second fan

25‧‧‧Second base

26‧‧‧Second runner

Claims (6)

A dissimilar material frame structure of a tandem fan includes: a first fan, wherein the first fan frame is composed of a first plastic material; and a second fan includes a second fan frame The second plastic frame is connected to the first frame of the first plastic material; wherein the composition of the first plastic material and the composition of the second plastic material Different types. The dissimilar material frame structure of the tandem fan according to claim 1, wherein the first plastic material is one of PBT, PA66, PPE, PA, PC, ABS or PPS, and the second plastic material The composition includes one of PBT, PA66, PPE, PA, PC, ABS or PPS. The dissimilar material frame structure of the tandem fan according to claim 2, wherein the first fan frame generates a first vibration frequency, the second frame frame generates a second vibration frequency, and the first vibration frequency Different from the second vibration frequency. The dissimilar material frame structure of the tandem fan according to claim 3, wherein the first frame includes a first port and a second port respectively located on opposite sides of the first frame, The first channel is connected to the first port and the second port, a first base is located in the first flow path, and a first wheel is disposed on the first base. The dissimilar material frame structure of the tandem fan according to claim 4, wherein the second frame includes a third port and a fourth port respectively located on opposite sides of the second frame, The second flow channel is connected to the third through port and the fourth through port. A second base is located in the second flow path, and a second fan wheel is disposed on the second base. The dissimilar material frame structure of the tandem fan according to claim 5, wherein the first pedestal is made of a first plastic material or a metal material, and the second pedestal is made of a second plastic material or Metal Material.