Fan frame with noise reduction structure

Abstract

The utility model relates to the field of fan frames, in particular to a fan frame with a silencing structure, which comprises a middle frame, a top frame and a bottom frame. A bottom frame is fixedly installed at the lower end of a middle frame, a top frame is installed at the upper end of the middle frame, an airflow channel is formed in the middle frame, a motor base is arranged in the center of the bottom frame, multiple sets of arc-shaped ribs are arranged at the outer end of the motor base in a surrounding mode, and a first wind guide slope and a second wind guide slope are formed in the two faces of each arc-shaped rib respectively. One ends of the arc-shaped ribs are connected to the motor base, the other ends of the arc-shaped ribs are connected to the joint of the bottom frame and the middle frame, and inclined silencing grooves are formed between the other ends of the arc-shaped ribs and communicate with the airflow channel; the arc-shaped ribs, the inclined silencing grooves and the airflow channels are combined, so that when the fan rotates to blow airflow to flow, the arc-shaped ribs change the wind direction through the first wind guide slopes and the second wind guide slopes of the arc-shaped ribs, and the stability of the whole structure is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of fan frames, in particular to a fan frame with a silencer structure. Background Art

[0002] Cooling fan frames are widely used in various electronic devices that require heat dissipation, such as computers, servers, communication equipment, industrial equipment, etc. With the continuous improvement of electronic equipment performance and the continuous increase in power consumption, the importance of cooling fan frames in the cooling system is becoming increasingly prominent.

[0003] The existing fan frame can usually only play a role in installing and fixing the motor blades of the cooling fan during use. When the cooling fan is working, the rotation of the blades blows the airflow onto the fan frame, which will generate large noise and affect the user experience.

[0004] Therefore, in order to address the problem that when the above-mentioned cooling fan is working, the rotation of the fan blades blows the airflow onto the fan frame, which generates a lot of noise and affects the user experience, a fan frame with a silencer structure can be designed. By designing a silencer guide structure inside the fan frame, the airflow is guided to the outside for discharge, thereby reducing noise and solving the above-mentioned problem. Utility Model Content

[0005] In order to overcome the problem that the existing fan frame can usually only play the role of installing and fixing the motor blades of the cooling fan during use, when the cooling fan is working, the rotation of the blades blows the airflow onto the fan frame, which will generate large noise and affect the user experience.

[0006] The technical solution of the utility model is as follows: a fan frame with a silencer structure comprises a middle frame, a top frame and a bottom frame; the bottom frame is fixedly mounted on the lower end of the middle frame, the top frame is mounted on the upper end of the middle frame, an air flow channel is opened inside the middle frame, a motor seat is provided at the center of the bottom frame, a plurality of groups of arc-shaped ribs are arranged around the outer end of the motor seat, a first wind guide slope and a second wind guide slope are respectively provided on both sides of the arc-shaped ribs, one end of the plurality of groups of arc-shaped ribs is connected to the motor seat, the other end of the plurality of groups of arc-shaped ribs is connected to the connection between the bottom frame and the middle frame, an oblique silencer groove is opened between the other ends of the plurality of groups of arc-shaped ribs, and the oblique silencer groove is communicated with the air flow channel.

[0007] Preferably, the present application combines arc-shaped ribs, oblique silencer grooves and air flow channels, so that when the fan rotates to blow the air flow, the arc-shaped ribs will change the wind direction through their own first wind guide slopes and second wind guide slopes, and enhance the stability of the overall structure. At the same time, after the wind direction changes, when it is discharged outward from the air flow channel, the oblique silencer groove expands the air outlet through its own oblique design, thereby guiding the airflow.

[0008] Preferably, four groups of shock-absorbing ribs are provided at the outer end of the middle frame, and the four groups of shock-absorbing ribs are arranged around the outer end of the middle frame, and multiple groups of reinforcing ribs are provided between the four groups of shock-absorbing ribs.

[0009] Preferably, the inner wall of the airflow channel is provided with a plurality of groups of oblique guide strips, and the plurality of groups of oblique guide strips are arranged around the inner wall of the airflow channel.

[0010] Preferably, a motor slot is provided at the upper end of the motor seat, and a positioning shaft is installed at the center of the motor slot.

[0011] Preferably, a first-level wiring opening is opened through the side wall of the motor slot, and a second-level wiring hole corresponding to the first-level wiring opening is opened at the edge of one side of the lower end of the bottom frame, and a wire clip is provided at the upper end of one group of arc-shaped ribs.

[0012] Preferably, a mounting groove is provided at a corner of a side away from the top frame, and a stress dispersion groove is provided on a side of the mounting groove close to the air flow channel.

[0013] Preferably, a mounting hole is provided at the center of the mounting groove, and a rubber gasket is provided inside the mounting groove.

[0014] The beneficial effects of the present invention are as follows: compared with the fan frames currently on the market which can only play the role of installing and fixing the motor blades of the cooling fan, and the problem that the rotation of the fan blades blows the airflow onto the fan frame, which will cause a large noise problem, the present application combines curved ribs, oblique guide strips, oblique silencer grooves and air flow channels, so that when the fan rotates to blow the airflow, the multiple groups of oblique guide strips on the side walls of the air flow channel can reduce the resistance of the airflow, so that more air can pass through the fan smoothly, and at the same time guide the airflow to flow in a specific direction, so that the air volume is more concentrated and enhanced, avoiding turbulence or vortex phenomenon in the air flow inside the fan, reducing the friction and collision between the airflow and the side walls of the air flow channel, playing a preliminary silencer role, thereby increasing the air volume, the airflow passes through multiple groups of curved ribs, and the curved ribs will change the wind direction through their own structure and enhance the stability of the overall structure. At the same time, after the wind direction changes, when it is discharged outward from the air flow channel, the oblique silencer groove expands the air outlet through its own oblique design, avoiding collision of the airflow with the fan frame, further playing a silencer role, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a schematic diagram of the overall structure of the fan frame of the present invention;

[0016] Figure 2 Shown is a schematic diagram of the middle frame structure of the fan frame of the present invention;

[0017] Figure 3 Shown is a schematic diagram of the bottom frame structure of the fan frame of the present invention;

[0018] Figure 4 Shown is a schematic diagram of the top frame structure of the fan frame of the present invention.

[0019] Explanation of the accompanying symbols: 1. Middle frame; 2. Bottom frame; 3. Top frame; 4. Air flow channel; 5. Oblique guide strip; 6. Motor seat; 7. Arc rib; 8. First wind guide slope; 9. Second wind guide slope; 10. Motor slot; 11. Positioning axis; 12. Primary wiring opening; 13. Shock-absorbing ribs; 14. Reinforcement ribs; 15. Oblique silencer slot; 16. Wire clip; 17. Secondary wiring hole; 18. Mounting slot; 19. Mounting hole; 20. Rubber gasket; 21. Stress dispersion slot. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] See also Figures 1-4 The utility model provides an embodiment: a fan frame with a silencer structure includes a middle frame 1, a top frame 3 and a bottom frame 2; the bottom frame 2 is fixedly installed at the lower end of the middle frame 1, and the top frame 3 is installed at the upper end of the middle frame 1. An air flow channel 4 is opened inside the middle frame 1, and a motor seat 6 is provided at the center of the bottom frame 2. A plurality of groups of arc-shaped ribs 7 are arranged around the outer end of the motor seat 6. A first wind guide slope 8 and a second wind guide slope 9 are respectively provided on both sides of the arc-shaped ribs 7. One end of the plurality of groups of arc-shaped ribs 7 is connected to the motor seat 6, and the other end of the plurality of groups of arc-shaped ribs 7 is connected to the connection between the bottom frame 2 and the middle frame 1. An oblique silencer groove 15 is opened between the other ends of the plurality of groups of arc-shaped ribs 7, and the oblique silencer groove 15 is communicated with the air flow channel 4.

[0022] See also Figure 1-Figure 2 3 , and the fan is rotated to blow the airflow, so that the fan can rotate and blow the airflow in a direction of rotation, thereby preventing the fan from rotating and causing the airflow to flow in a direction of rotation.

[0023] See also Figure 2-Figure 3In this embodiment, a motor slot 10 is provided at the upper end of the motor base 6, a positioning shaft 11 is installed in the center of the motor slot 10, a first-level wiring opening 12 is opened through the side wall of the motor slot 10, and a second-level wiring hole 17 corresponding to the first-level wiring opening 12 is opened at the edge of one side of the lower end of the bottom frame 2. A wire clip 16 is provided at the upper end of one group of arc-shaped ribs 7. Through the combination of the motor base 6 and the positioning shaft 11, when the fan is installed, the motor can be positioned and installed in the center of the motor slot 10 through the positioning shaft 11. At the same time, the power cord of the motor is passed through the first-level wiring opening 12, the wire clip 16 and the second-level wiring hole 17 in sequence to connect to the external power supply.

[0024] See also Figure 3-Figure 4 In this embodiment, mounting grooves 18 are provided at the corners of the sides away from the top frame 3, and stress dispersion grooves 21 are provided on the side of the mounting grooves 18 close to the air flow channel 4. The combination of the mounting grooves 18 and the stress dispersion grooves 21 allows the user to install the fan frame with screws. The stress generated by the screw fixation can be dispersed through the stress dispersion grooves 21, thereby preventing the stress generated by the screw fixation from being too concentrated and damaging the installation position. A mounting hole 19 is provided in the center of the mounting groove 18, and a rubber gasket 20 is provided inside the mounting groove 18. The combination of the mounting hole 19 and the rubber gasket 20 allows the mounting gasket to play a shock-absorbing and buffering role between the screw, the fan frame, and the installed body during installation. At the same time, the mounting gasket can avoid collision between the fan frame and the installed body, further playing a role in noise reduction and silencing.

[0025] During operation, the motor can be positioned and installed in the center of the motor slot 10 through the positioning shaft 11, and the power cord of the motor is connected to the external power supply through the first-level wiring port 12, the wire card 16 and the second-level wiring hole 17 in sequence. The installation gasket can play a shock-absorbing and buffering role between the screws, the fan frame and the installed body. At the same time, the installation gasket can avoid collision between the fan frame and the installed body.

[0026] When the fan rotates and blows the air flow, multiple groups of oblique guide strips 5 can guide the air flow to flow in a specific direction, making the air volume more concentrated and enhanced, avoiding turbulence or eddy currents in the air flow inside the fan, reducing the friction and collision between the air flow and the side wall of the air flow channel 4, and playing a preliminary silencing role.

[0027] When the airflow passes through multiple groups of curved ribs 7, the curved ribs 7 will change the wind direction through their own structure and enhance the stability of the overall structure. At the same time, after the wind direction changes, when it is discharged outward from the air flow channel 4, the oblique silencer groove 15 expands the air outlet through its own oblique design, avoiding collision between the airflow and the fan frame, and further playing a silencing role.

[0028] Through the above steps, the present application combines the arc ribs 7, the oblique guide strips 5, the oblique silencer grooves 15 with the air flow channel 4, so that when the fan rotates to blow the air flow, the multiple groups of oblique guide strips 5 on the side walls of the air flow channel 4 can reduce the resistance of the air flow, so that more air can pass through the fan smoothly, and at the same time guide the air flow to flow in a specific direction, so that the wind volume is more concentrated and enhanced, avoiding the air flow from generating turbulence or vortex phenomena inside the fan, reducing the friction and collision between the air flow and the side walls of the air flow channel 4, playing a preliminary silencer role, thereby increasing the air volume, and the air flow passes through multiple groups of arc ribs 7, and the arc ribs 7 will change the wind direction through their own structure and enhance the stability of the overall structure. At the same time, after the wind direction changes, when it is discharged outward from the air flow channel 4, the oblique silencer grooves 15 expand the air outlet through their own oblique design, avoiding the collision of the air flow with the fan frame, further playing a silencer role, thereby improving the user experience.

Claims

1. A fan frame with a sound-absorbing structure, comprising a middle frame (1); characterized in that: The invention also comprises a top frame (3) and a bottom frame (2); the bottom frame (2) is fixedly mounted on the lower end of the middle frame (1); the top frame (3) is mounted on the upper end of the middle frame (1); an air flow channel (4) is provided inside the middle frame (1); a motor seat (6) is provided at the center of the bottom frame (2); a plurality of groups of arc-shaped ribs (7) are provided around the outer end of the motor seat (6); a first wind guide slope (8) and a second wind guide slope (9) are provided on both sides of the arc-shaped ribs (7); one end of the plurality of groups of arc-shaped ribs (7) is connected to the motor seat (6); the other end of the plurality of groups of arc-shaped ribs (7) is connected to the connection between the bottom frame (2) and the middle frame (1); an oblique silencer groove (15) is provided between the other ends of the plurality of groups of arc-shaped ribs (7); the oblique silencer groove (15) is communicated with the air flow channel (4).

2. The fan frame with a sound-absorbing structure according to claim 1, characterized in that: Four groups of shock-absorbing ribs (13) are provided at the outer end of the middle frame (1), and the four groups of shock-absorbing ribs (13) are arranged around the outer end of the middle frame (1), and multiple groups of reinforcing ribs (14) are provided between the four groups of shock-absorbing ribs (13).

3. The fan frame with a sound-absorbing structure according to claim 1, characterized in that: The inner wall of the air flow channel (4) is provided with a plurality of groups of oblique guide strips (5), and the plurality of groups of oblique guide strips (5) are arranged around the inner wall of the air flow channel (4).

4. The fan frame with a sound-absorbing structure according to claim 1, characterized in that: A motor slot (10) is provided at the upper end of the motor seat (6), and a positioning shaft (11) is installed at the center of the motor slot (10).

5. The fan frame with a sound-absorbing structure according to claim 4, characterized in that: A first-level wiring opening (12) is provided through the side wall of the motor slot (10), and a second-level wiring hole (17) corresponding to the first-level wiring opening (12) is provided at an edge of one side of the lower end of the bottom frame (2), and a wire clip (16) is provided at the upper end of one group of arc-shaped ribs (7).

6. The fan frame with a sound-absorbing structure according to claim 1, characterized in that: A mounting groove (18) is provided at a corner of a side away from the bottom frame (2) and the top frame (3), and a stress dispersion groove (21) is provided on a side of the mounting groove (18) close to the air flow channel (4).

7. The fan frame with a sound-absorbing structure according to claim 6, characterized in that: A mounting hole (19) is provided at the center of the mounting groove (18), and a rubber gasket (20) is provided inside the mounting groove (18).

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