Strengthening structure of serially connected fan frame body

Abstract

The invention provides a strengthening structure of a tandem fan frame body, which comprises a front-stage fan frame and a rear-stage fan frame, the front-stage fan frame is provided with a front-stage shaft seat, the rear-stage fan frame is provided with a rear-stage shaft seat, the bottom of the front-stage shaft seat is provided with an assembling part, the bottom of the rear-stage shaft seat is provided with a connected part, and the front-stage shaft seat and the rear-stage shaft seat are mutually combined through the connected part and the assembling part. Therefore, the front-stage shaft seat and the rear-stage shaft seat can be combined and fixed, and the rigidity of the whole structure of the fan frame is improved.

Description

Technical Field

[0001] The present invention relates to a fan frame, and more particularly to a reinforced structure of a series-connected fan frame that enhances the structural rigidity and natural frequency of the entire fan frame by reinforcing the connected fan frames, and reduces fundamental frequency vibration and resonance caused by rotor imbalance during fan operation. Background Art

[0002] With technological advancements, people's dependence on various electronic devices has increased. However, during operation, the components within electronic products (such as computers and laptops) generate high heat. If this heat cannot be dissipated out of the electronic product in a timely manner, overheating problems can easily occur. Therefore, most electronic products often use a fan for active cooling to maintain the electronic product within a certain operating temperature range. However, sometimes the wind power provided by a single fan is slightly insufficient, so two or more fans are often connected in series to form a cascade fan to provide sufficient wind power.

[0003] When the cascade fan is running, it will generate fundamental frequency vibration caused by the fundamental frequency exciting force, and the fundamental frequency exciting force is mainly caused by the imbalance of the rotor, resulting in the generation of periodic energy with a fixed frequency when the cascade fan is running. The periodic energy is transmitted to the cascade fan, and fundamental frequency vibration occurs. The closer the natural frequency of the fan frame cascade structure is to the exciting force frequency, the greater the amplitude is. When the two are close, resonance occurs. The existing cascade fan fixes the four corners of the frame in correspondence, but the bottom surfaces of the front and rear stage shaft seats of the fan are in contact with a large area and are not fixed, causing the bottom surfaces with large contact areas to collide with each other due to the vibration frequency and generate noise. The existing cascade fan reduces the fundamental frequency vibration by thickening the frame chassis, thickening the frame legs, and controlling the imbalance of the fan blades. However, when the fan performance needs to be maintained at high efficiency, the thickening of the frame chassis will limit the space of the circuit board parts and cannot meet the design requirements. The thickening of the frame legs will cause a decrease in heat dissipation efficiency. In addition, controlling the imbalance of the fan blades will cause problems such as reduced production yield and increased production costs.

[0004] Therefore, how to reduce the contact area to reduce the vibration frequency, and how to reduce the resonance caused by the fundamental frequency vibration while maintaining heat dissipation efficiency without affecting the installation space and avoiding increasing production costs, are the areas that the inventors of this case and related manufacturers engaged in this industry are eager to research and improve. Summary of the Invention

[0005] Therefore, in order to effectively solve the above-mentioned problems, the main purpose of the present invention is to provide a reinforced structure of a serial fan frame, add a coupling mechanism between the shaft seats of the serial fan frame to strengthen the overall structural strength, greatly improve the structural rigidity and natural frequency of the overall fan frame, and reduce the fundamental frequency vibration and resonance of the serial fan frame caused by the imbalance of the rotor when the fan is running.

[0006] A secondary purpose of the present invention is to provide a reinforcement structure of a serially connected fan frame, which facilitates subsequent maintenance and replacement operations.

[0007] To achieve the above objectives, the technical solutions provided by the embodiments of the present invention are as follows:

[0008] A reinforcement structure for serially connected fan frames, characterized by comprising:

[0009] A front-stage fan frame has a front-stage shaft seat, and a group of connecting parts are provided at the bottom of the front-stage shaft seat;

[0010] A rear-stage fan frame has a rear-stage shaft seat. A receiving portion is provided at the bottom of the rear-stage shaft seat. The receiving portion and the assembling portion are combined with each other to define a receiving space between the front-stage shaft seat and the rear-stage shaft seat, thereby forming a detachable structural connection between the front-stage shaft seat and the rear-stage shaft seat, thereby greatly improving the rigidity of the overall structure of the fan frame and reducing the fundamental frequency vibration and mutual resonance caused by rotor imbalance when the fan is running.

[0011] The reinforcement structure of the cascade fan frame, wherein: at least one front-stage outer group is formed on the outside of the front-stage fan frame, and at least one rear-stage outer group is formed on the outside of the rear-stage fan frame, and the rear-stage outer group is combined with the front-stage outer group.

[0012] The reinforcement structure of the serial fan frame is as follows: the bottom of the front-stage shaft seat is defined as a front-stage inner recess in which a front-stage circuit board is provided, and the bottom of the rear-stage shaft seat is defined as a rear-stage inner recess in which a front-stage circuit board is provided. By combining the receiving portion and the assembling portion, the front-stage inner recess and the rear-stage inner recess jointly define the accommodating space and are used to respectively set the front-stage circuit board and the rear-stage circuit board.

[0013] The reinforcing structure of the serially connected fan frame, wherein: the assembling portion is formed on the inner wall or end edge of the front-stage inner recess, and the receiving portion is formed on the inner wall or end edge of the rear-stage inner recess.

[0014] A reinforcement structure for serially connected fan frames, characterized by comprising:

[0015] A front-stage fan frame has a front-stage shaft seat, and a group of connecting parts are provided at the bottom of the front-stage shaft seat;

[0016] A rear-stage fan frame has a rear-stage shaft seat, and a receiving portion is provided at the bottom of the rear-stage shaft seat;

[0017] A connecting body has at least one first connecting portion and at least one second connecting portion. The connecting body is formed by the first connecting portion and the connecting portion being connected to each other, and the second connecting portion and the receiving portion being connected to each other, so that the front-stage shaft seat and the rear-stage shaft seat jointly form a accommodating space and form a detachable structural connection, thereby improving the rigidity and natural frequency of the overall structure of the fan frame.

[0018] The reinforcement structure of the cascade fan frame, wherein: at least one front-stage outer group is formed on the outside of the front-stage fan frame, and at least one rear-stage outer group is formed on the outside of the rear-stage fan frame, and the rear-stage outer group is combined with the front-stage outer group.

[0019] The reinforcement structure of the serial fan frame is as follows: the bottom of the front-stage shaft seat is defined by a front-stage inner recess, and a front-stage circuit board is arranged in the front-stage inner recess; the bottom of the rear-stage shaft seat is defined by a rear-stage inner recess, and a rear-stage circuit board is arranged in the rear-stage inner recess.

[0020] The reinforcing structure of the serially connected fan frame, wherein: the assembling portion is formed on the inner wall or end edge of the front-stage inner recess, and the receiving portion is formed on the inner wall or end edge of the rear-stage inner recess.

[0021] The reinforcement structure of the serial fan frame, wherein: the assembly body is assembled by the first joint part to form the assembly part and is relatively arranged at the bottom of the front-stage shaft seat, and the receiving part is assembled by the second joint part and is relatively arranged at the bottom of the rear-stage shaft seat, so that the front-stage inner recess and the rear-stage inner recess together constitute the accommodating space, and the assembly body is located in the accommodating space and isolates the front-stage circuit board and the rear-stage circuit board.

[0022] The reinforced structure of the serially connected fan frame, wherein: the outer diameter of the assembly body is smaller than or equal to the outer diameter of the front-stage shaft seat, and the outer diameter of the assembly body is smaller than or equal to the outer diameter of the rear-stage shaft seat.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. After the front-stage shaft seat and the rear-stage shaft seat are fixed together, the front-stage inner recess and the rear-stage inner recess together form an accommodating space. In addition to shortening the axial distance, the overall structural rigidity and natural frequency of the fan frame can be greatly improved, and the fundamental frequency vibration and mutual resonance caused by the imbalance of the rotor during fan operation can be reduced.

[0025] 2. Facilitate subsequent maintenance and replacement operations.

[0026] 3. The single-space structure maintains heat dissipation efficiency without affecting circuit installation space.

[0027] 4. Maintain production yield and production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional assembly schematic diagram of the reinforcing structure of the serially connected fan frame of the present invention.

[0029] Figure 2 It is a perspective exploded schematic diagram of the reinforcement structure of the serially connected fan frame according to the first embodiment of the present invention.

[0030] Figure 3 It is a schematic plan cross-sectional view of the reinforcement structure of the serially connected fan frame according to the first embodiment of the present invention.

[0031] Figure 4 FIG. 1 is a perspective exploded diagram of a reinforcement structure of a serially connected fan frame according to a second embodiment of the present invention.

[0032] Figure 5 A schematic plan view of a second embodiment of the present invention showing a reinforcing structure for connecting a fan frame in series. Figure 1 .

[0033] Figure 6 A schematic plan view of a second embodiment of the present invention showing a reinforcing structure for connecting a fan frame in series. Figure 2 .

[0034] Explanation of the reference numerals: Reinforced structure of the serially connected fan frame-1; front-stage fan frame-2; front-stage shaft seat-21; assembly part-211; front-stage inner recess-212; front-stage circuit board-213; front-stage outer assembly part-22; accommodating space-23; rear-stage fan frame-3; rear-stage shaft seat-31; receiving part-311; rear-stage inner recess-312; rear-stage circuit board-313; rear-stage outer assembly part-32; assembly body-4; first connecting part-41; second connecting part-42. DETAILED DESCRIPTION

[0035] The above-mentioned objectives and structural and functional characteristics of the present invention will be described with reference to the preferred embodiments shown in the accompanying drawings.

[0036] See also Figure 1 、 Figure 2 、 Figure 3 As shown, they are respectively a three-dimensional combination diagram of the reinforcement structure of the serial fan frame of the present invention and a three-dimensional decomposition schematic diagram and a plane sectional schematic diagram of the first embodiment. As shown in the figure, the present invention provides a reinforcement structure 1 of the serial fan frame, comprising: a front-stage fan frame 2 and a rear-stage fan frame 3.

[0037] The front-stage fan frame 2 has a front-stage shaft seat 21, which is formed on one side of the front-stage fan frame 2 by means of stationary blades (or ribs), and at least one connecting portion 211 is provided at the bottom of the front-stage shaft seat 21, and a front-stage inner recess 212 is defined at the bottom of the front-stage shaft seat 21. In this embodiment, the connecting portion 211 is illustrated in a card slot or groove, and the connecting portion 211 is formed on the inner wall or end edge of the front-stage inner recess 212, but is not limited thereto. The front-stage shaft seat 21 is provided with a front-stage circuit board 213 in the front-stage inner recess 212, and at least one front-stage outer component 22 is formed on the outside of the front-stage fan frame 2, and the front-stage outer component 22 is illustrated in a card hole.

[0038] The rear-stage fan frame 3 has a rear-stage shaft seat 31, which is formed on one side of the rear-stage fan frame 3 by means of stationary blades or ribs, and at least one receiving portion 311 is provided at the bottom of the rear-stage shaft seat 31, and the receiving portion 311 corresponds to the assembly portion 211, and a rear-stage inner recess 312 is defined at the bottom of the rear-stage shaft seat 31, and the receiving portion 311 in this embodiment is an illustrative embodiment using a hook as an example, and the receiving portion 311 is formed on the inner wall or end edge of the rear-stage inner recess 312 and protrudes outward, but is not limited to this, and the rear-stage shaft seat 31 is provided with a rear-stage circuit board 313 in the rear-stage inner recess 312, and at least one rear-stage outer assembly portion 32 is formed on the outside of the rear-stage fan frame 3, and the rear-stage outer assembly portion 32 is an illustrative embodiment using a column as an example.

[0039] The front-stage fan frame 2 is connected in series with the inverted rear-stage fan frame 3, and the front-stage shaft seat 21 and the rear-stage shaft seat 31 are connected to each other, so that the receiving portion 311 is combined with the assembly portion 211, and the front-stage outer assembly portion 22 and the rear-stage outer assembly portion 32 are also combined with each other. The front-stage inner recess 212 and the rear-stage inner recess 312 together form an accommodating space 23, which can shorten the axial distance between the front-stage shaft seat 21 and the rear-stage shaft seat 31. The accommodating space 23 is used to accommodate at least one circuit board or to accommodate the front-stage circuit board 213 and the rear-stage circuit board 313 respectively. In addition, the receiving portion 311 is combined with the assembly portion 211, and the front-stage outer assembly portion 22 is combined with the rear-stage outer assembly portion 32. In addition to allowing the outer peripheral sides and internal center positions of the front-stage fan frame 2 and the rear-stage fan frame 3 to be combined and fixed to each other, the overall structural rigidity and natural frequency of the fan frame can be enhanced, and the fundamental frequency vibration and mutual resonance caused by rotor imbalance when the fan is running can be reduced.

[0040] In addition to the above-mentioned snap-fit ​​connection, the connection between the connecting portion 211 and the receiving portion 311 can also be a combination of locking, interlocking, sliding rails or snap-fit ​​structures to combine and fix them together, so that the outer periphery and the inner part of the front-stage fan frame 2 and the rear-stage fan frame 3 are combined and fixed to each other.

[0041] Also, see Figure 4 and Figure 5 and Figure 6 As shown, they are respectively a three-dimensional exploded view and a planar cross-sectional view of the strengthening structure of the serial fan frame according to the second embodiment of the present invention. Figure 1 and two , as shown in the figure, and Figures 1 to 3 The same structure of the first embodiment is not described in detail. The difference lies in that a connecting body 4 is further included, and the front-stage shaft seat 21 and the rear-stage shaft seat 31 are connected to each other through the connecting body 4.

[0042] The assembly body 4 is arranged between the front-stage shaft seat 21 and the rear-stage shaft seat 31, and has at least a first coupling portion 41 and at least a second coupling portion 42. The first coupling portion 41 and the second coupling portion 42 are arranged at intervals along the circumference of the assembly body 4. The first coupling portion 41 is arranged on the side of the assembly body 4 relative to the front-stage shaft seat 21, and is, for example but not limited to, a hook. In this embodiment, the two first coupling portions 41 are symmetrically arranged in the upper and lower directions of the circumference of the assembly body 4. In addition, the second coupling portion 42 is arranged on the side of the assembly body 4 relative to the rear-stage shaft seat 31, and is, for example but not limited to, a hook. In this embodiment, the two second coupling portions 42 are symmetrically arranged in the left and right directions of the circumference of the assembly body 4.

[0043] The front-stage fan frame 2 is connected in series with the assembly body 4 and the inverted rear-stage fan frame 3. The front-stage shaft seat 21 is connected to the assembly body 4, and the first engaging portion 41 of the assembly body 4 enters the front-stage inner recess 212 and engages with the assembly portion 211. The rear-stage shaft seat 31 is connected to the assembly body 4, and the second engaging portion 42 of the assembly body 4 enters the rear-stage inner recess 312 and engages with the receiving portion 311. The front-stage inner recess 212 and the rear-stage inner recess 312 together form the accommodating space 23, and the assembly body 4 is located in the accommodating space 23 to isolate the front-stage circuit board 213 from the rear-stage circuit board 313.

[0044] Furthermore, the outer diameter of the assembly 4 is less than or equal to the outer diameter of the front-stage shaft seat 21, and the outer diameter of the assembly 4 is less than or equal to the outer diameter of the rear-stage shaft seat 31, so that when the assembly 4 is assembled between the front-stage shaft seat 21 and the rear-stage shaft seat 31, the assembly 4 can be relatively buried inside the front-stage shaft seat 21 and the rear-stage shaft seat 31, or assembled between the front-stage shaft seat 21 and the rear-stage shaft seat 31, so that the assembly 4 will not increase the thickness of the front-stage fan frame 2 and the rear-stage fan frame 3 and the axial distance between them, and will not affect the flow direction and flow rate of the airflow outside the front-stage shaft seat 21 and the rear-stage shaft seat 31.

[0045] In addition to the aforementioned snap-fit ​​connection, the first coupling portion 41 and the assembly portion 211, and the second coupling portion 42 and the receiving portion 311, can be connected to each other by a combination of locking, interlocking, sliding rails, or snap-fit ​​structures, so that the front-stage shaft seat 21 and the rear-stage shaft seat 31 are connected to each other via the assembly body 4. This not only improves the structural rigidity and natural frequency of the overall fan frame, but also facilitates subsequent maintenance and replacement operations. Furthermore, it can solve the problems of existing frame chassis thickening, which limits the space for circuit board components and cannot meet design requirements, thickening the frame legs, which reduces heat dissipation efficiency, and controlling the imbalance of the fan blades, which reduces production yield and increases production costs.

[0046] As described above, the present invention has the following advantages compared to the prior art:

[0047] 1. After the front-stage shaft seat and the rear-stage shaft seat are fixed together, the front-stage inner recess and the rear-stage inner recess together form an accommodating space. In addition to shortening the axial distance, the overall structural rigidity and natural frequency of the fan frame can be greatly improved, and the fundamental frequency vibration and mutual resonance caused by the imbalance of the rotor during fan operation can be reduced.

[0048] 2. Facilitate subsequent maintenance and replacement operations.

[0049] 3. The single-space structure maintains heat dissipation efficiency without affecting circuit installation space.

[0050] 4. Maintain production yield and production costs.

[0051] The above description has been a detailed explanation of the present invention. However, the above description is only a preferred embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. In other words, all equivalent changes and modifications made based on the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A reinforcing structure of a series-connected fan frame, characterized in that: include: A front-stage fan frame has a front-stage shaft seat, and a group of connecting parts are provided at the bottom of the front-stage shaft seat; A rear-stage fan frame has a rear-stage shaft seat. A receiving portion is provided at the bottom of the rear-stage shaft seat. The receiving portion and the assembling portion are combined with each other to define a receiving space between the front-stage shaft seat and the rear-stage shaft seat, thereby forming a detachable structural connection between the front-stage shaft seat and the rear-stage shaft seat, thereby greatly improving the rigidity of the overall structure of the fan frame and reducing the fundamental frequency vibration and mutual resonance caused by rotor imbalance when the fan is running.

2. The reinforcing structure of the cascade fan frame according to claim 1, wherein: At least one front-stage outer group is formed on the outer side of the front-stage fan frame, and at least one rear-stage outer group is formed on the outer side of the rear-stage fan frame. The rear-stage outer group is combined with the front-stage outer group.

3. The reinforcing structure of the cascade fan frame according to claim 1, wherein: The bottom of the front-stage shaft seat is defined as a front-stage inner recess in which a front-stage circuit board is disposed, and the bottom of the rear-stage shaft seat is defined as a rear-stage inner recess in which a front-stage circuit board is disposed. By combining the receiving portion and the assembling portion, the front-stage inner recess and the rear-stage inner recess jointly define the accommodating space and are used to respectively dispose the front-stage circuit board and the rear-stage circuit board.

4. The reinforcing structure of the cascade fan frame according to claim 3, wherein: The assembly portion is formed on the inner wall or the end edge of the front-stage inner recess, and the receiving portion is formed on the inner wall or the end edge of the rear-stage inner recess.

5. A reinforcing structure of a serially connected fan frame, characterized in that: include: A front-stage fan frame has a front-stage shaft seat, and a group of connecting parts are provided at the bottom of the front-stage shaft seat; A rear-stage fan frame has a rear-stage shaft seat, and a receiving portion is provided at the bottom of the rear-stage shaft seat; A connecting body has at least one first connecting portion and at least one second connecting portion. The connecting body is formed by the first connecting portion and the connecting portion being connected to each other, and the second connecting portion and the receiving portion being connected to each other, so that the front-stage shaft seat and the rear-stage shaft seat jointly form a accommodating space and form a detachable structural connection, thereby improving the rigidity and natural frequency of the overall structure of the fan frame.

6. The reinforcing structure of the cascade fan frame according to claim 5, wherein: At least one front-stage outer group is formed on the outer side of the front-stage fan frame, and at least one rear-stage outer group is formed on the outer side of the rear-stage fan frame. The rear-stage outer group is combined with the front-stage outer group.

7. The reinforcing structure of the cascade fan frame according to claim 5, wherein: The bottom of the front-stage shaft seat is defined as a front-stage inner recess, and a front-stage circuit board is arranged in the front-stage inner recess. The bottom of the rear-stage shaft seat is defined as a rear-stage inner recess, and a rear-stage circuit board is arranged in the rear-stage inner recess.

8. The reinforcing structure of the cascade fan frame according to claim 7, wherein: The assembly portion is formed on the inner wall or the end edge of the front-stage inner recess, and the receiving portion is formed on the inner wall or the end edge of the rear-stage inner recess.

9. The reinforcing structure of the cascade fan frame according to claim 8, wherein: The assembly body is assembled by the first combining portion to form the assembly portion and is relatively arranged at the bottom of the front-stage shaft seat, and the receiving portion is assembled by the second combining portion and is relatively arranged at the bottom of the rear-stage shaft seat, so that the front-stage inner recess and the rear-stage inner recess together constitute the accommodating space, and the assembly body is located in the accommodating space and isolates the front-stage circuit board and the rear-stage circuit board.

10. The reinforcing structure of the cascade fan frame according to claim 5, wherein: The outer diameter of the assembly body is smaller than or equal to the outer diameter of the front-stage shaft seat, and the outer diameter of the assembly body is smaller than or equal to the outer diameter of the rear-stage shaft seat.

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