Impeller fan with resistance and noise reduction structure

Abstract

The utility model discloses an impeller fan with a resistance reduction and noise reduction structure, and relates to the technical field of impeller fans, the impeller fan comprises a protective cover, an air filter, a rubber foot pad, a bearing base and an air inlet hole, the air filter is installed on the right side of the protective cover, the bearing base is installed below the protective cover, the rubber foot pad is installed below the bearing base, and the air inlet hole is formed in the rubber foot pad. An air outlet pipeline is arranged on the left side of the protective cover, a spoiler and silencing holes are arranged in the air outlet pipeline, a blast chamber is arranged on the right side of the air outlet pipeline, a motor is installed on the left side of the blast chamber, and the motor is provided with a fixing disc and fan blades; according to the equipment, the silencing holes are evenly formed in the two sides of the inner wall of the air outlet pipeline and matched with the wavy stripes evenly fixed to the upper surface and the lower surface of the spoiler, circulating air can become disordered, and therefore the possibility that resonance is generated between the air and the inner wall of the air outlet pipeline is reduced, and noise is further controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of impeller fans, in particular to an impeller fan provided with a resistance and noise reduction structure. Background Art

[0002] Impeller fans are devices that create air flow in an area by cutting fixed air through the rotation of the impeller. By changing the shape and material of the impeller, different effects can be produced. Impeller fans are usually used in fields such as heat dissipation and ventilation. However, existing impeller fans have some shortcomings, such as:

[0003] A single-motor double-impeller fan uses a double-impeller structure with an increased number of impellers. During use, the fan will generate a greater degree of resonance noise. The noise will not only affect the lives of surrounding residents, but also cause great harm to the health of workers who are exposed to the noise for a long time. Utility Model Content

[0004] The purpose of the utility model is to provide an impeller fan with a drag-reducing and noise-reducing structure to solve the problem proposed in the above background technology that the number of impellers of the double-impeller structure fan used in the existing equipment on the market has increased, and the operation of the fan will generate a larger resonance noise during use. The noise will not only affect the lives of surrounding residents, but also cause great harm to the health of workers who are exposed to the noise for a long time.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an impeller fan with a drag and noise reduction structure, comprising a protective cover, an air filter, a rubber foot pad, a bearing base and an air inlet;

[0006] An air filter is installed on the right side of the protective cover, and a supporting base is installed below the protective cover, and a rubber foot pad is installed below the supporting base;

[0007] An air outlet duct is provided on the left side of the protective cover, a spoiler and a silencer hole are provided in the air outlet duct, a blower chamber is provided on the right side of the air outlet duct, a motor is installed on the left side of the blower chamber, and the motor is provided with a fixed plate and fan blades, a sound insulation duct is installed on the right side of the blower chamber, an air inlet hole is provided on the inside of the sound insulation duct, and a support frame is installed at the center line position of the sound insulation duct.

[0008] As a preferred technical solution of the present invention, the right side of the protective cover is fixedly connected to the air filter, a groove is provided at the edge of the upper surface of the supporting base, and the protective cover is connected to the upper part of the supporting base by snapping, and the four top corners of the bottom of the supporting base are fixedly connected to rubber pads, and the rubber pads are the same thickness as the supporting base;

[0009] By adopting the above technical solution, the device opens a groove at the edge of the upper surface of the supporting base and connects it to the protective cover by snapping it in, which can effectively reduce the gap with the supporting base and prevent the protective cover and the supporting base from vibrating and generating noise. The rubber foot pad has the same thickness as the supporting base, which can further provide a buffering effect and control the noise generated by the equipment.

[0010] As a preferred technical solution of the present invention, the upper surface of the supporting base is fixedly connected to the blast chamber, the left side of the blast chamber is fixedly connected to the motor, the right side output shaft of the motor is fixedly connected to the fixed disk, and the right side of the fixed disk is fixedly connected to a total of twenty-one fan blades, the fan blades are generally arc-shaped, and triangular notches are provided at the upper and lower ends of the fan blades, and the right side surface of the fan blades is evenly paved with hemispherical grooves;

[0011] By adopting the above technical solution, the device can reduce the power transmission levels and improve the power transmission efficiency by fixedly connecting the output shaft on the right side of the motor with the fixed plate. The twenty-one fan blades fixedly connected on the right side of the fixed plate can reduce the resonance of the air, thereby reducing noise. Triangular notches are opened at the upper and lower ends of the fan blades, and hemispherical grooves are evenly laid on the right surface, which can play a role in turbulence, reduce air resistance, and thus reduce noise.

[0012] As the preferred technical solution of the present invention, the center position on the right side of the blast chamber is threadedly connected to a sound insulation pipe, and the sound insulation pipe adopts a traditional technical solution. A total of 19 air inlet holes are opened in the sound insulation pipe, and the sound insulation pipe is filled with a large amount of sound insulation cotton;

[0013] By adopting the above technical solution, the equipment can reduce the airflow noise generated when the air enters by using the sound insulation pipe of the traditional technical solution, and the support of the air filter can reduce the probability of damage to the equipment by debris.

[0014] As a preferred technical solution of the present invention, the lower left side of the blast chamber is fixedly connected to the air outlet duct, and silencer holes are evenly provided on both sides of the inner wall of the air outlet duct. The silencer holes are cylindrical holes of varying depths. A total of five spoilers are evenly fixedly connected in the air outlet duct. The right side of the spoiler is a conical structure, and wavy stripes are evenly fixed on the upper and lower surfaces of the spoiler. A square frame with circular through holes is fixed on the left edge of the air outlet duct.

[0015] By adopting the above technical solution, the device can make the circulating air turbulent by evenly opening silencer holes on both sides of the inner wall of the air outlet duct and evenly fixing wavy stripes on the upper and lower surfaces of the spoiler, thereby reducing the possibility of resonance between the air and the inner wall of the air outlet duct and further controlling the generation of noise.

[0016] As a preferred technical solution of the present invention, the protective cover adopts a hollow structure filled with polyethylene foam, and a mesh bracket is provided inside the protective cover;

[0017] By adopting the above technical solution, the device can have a sound insulation effect on the basis of the excellent protection capability of the protective cover by adopting a hollow structure filled with polyethylene foam and using a mesh bracket as a skeleton.

[0018] As a preferred technical solution of the present invention, the motor is cooled by a water cooling assembly, and a radiator heat dissipation assembly is installed at the bottom of the supporting base;

[0019] By adopting the above technical solution, the device can improve space utilization and increase the endurance of the motor by installing heat dissipation components such as the radiator at the bottom of the supporting base.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The device has a groove on the edge of the upper surface of the base, which is connected to the protective cover by snapping. This can effectively reduce the gap between the base and the protective cover, preventing vibration and noise from the two. The rubber foot pads are the same thickness as the base, which can further provide a buffering effect and control the noise generated by the device.

[0022] By fixing the right output shaft of the motor to the fixed plate, the device can reduce the power transmission level and improve the power transmission efficiency. The 21 fan blades fixedly connected to the right side of the fixed plate can reduce the resonance of the air, thereby reducing noise. The fan blades have triangular notches at the upper and lower ends, and the right surface is evenly paved with hemispherical grooves, which can play a role in disturbing the flow, reducing air resistance and thus reducing noise.

[0023] The device uses a traditional soundproof pipe to reduce the airflow noise generated when the air enters, and the air filter can reduce the probability of debris damaging the equipment.

[0024] The device evenly opens silencer holes on both sides of the inner wall of the air outlet duct and evenly fixes wavy stripes on the upper and lower surfaces of the spoiler to make the circulating air turbulent, thereby reducing the possibility of resonance between the air and the inner wall of the air outlet duct and further controlling the generation of noise;

[0025] The device adopts a hollow structure with polyethylene foam filled inside the protective cover and uses a mesh bracket as the skeleton, which can achieve sound insulation effect on the basis of the excellent protection ability of the protective cover.

[0026] By installing heat dissipation components such as radiators at the bottom of the supporting base, the device can improve space utilization and increase the endurance of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a side view of the structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the connection structure between the support frame and the bearing base of the utility model;

[0029] Figure 3 This is a schematic diagram of the top view of the structure of the utility model;

[0030] Figure 4 This is a side view structural diagram of the air outlet pipe of the utility model;

[0031] Figure 5 This is a schematic diagram of the connection structure between the fan blade and the fixed disk of the utility model;

[0032] Figure 6 This is a schematic diagram of the connection structure between the sound insulation pipeline and the support frame of the utility model.

[0033] In the figure: 1. Protective cover; 2. Air filter; 3. Rubber foot pad; 4. Load-bearing base; 5. Air outlet duct; 6. Sound insulation duct; 7. Support frame; 8. Blower chamber; 9. Motor; 10. Spoiler; 11. Silencer hole; 12. Fixing plate; 13. Fan blades; 14. Air inlet. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figure 1-6 The technical solution of the utility model is as follows: an impeller fan with a drag and noise reduction structure includes a protective cover 1, an air filter 2, a rubber foot pad 3, a bearing base 4, an air outlet pipe 5, a sound insulation pipe 6, a support frame 7, a blast chamber 8, a motor 9, a spoiler 10, a silencer hole 11, a fixing plate 12, a fan blade 13 and an air inlet 14;

[0036] An air filter 2 is installed on the right side of the protective cover 1, and a bearing base 4 is installed below the protective cover 1, and a rubber foot pad 3 is installed below the bearing base 4. The right side of the protective cover 1 is fixedly connected to the air filter 2, a groove is provided at the edge of the upper surface of the bearing base 4, and the upper part of the bearing base 4 is snap-connected to the protective cover 1, and the four top corners of the bottom of the bearing base 4 are fixedly connected to the rubber foot pads 3. The rubber foot pads 3 have the same thickness as the bearing base 4. By providing a groove at the edge of the upper surface of the bearing base 4 and connecting it to the protective cover 1 by snapping, the device can effectively reduce the gap with the bearing base 4, prevent the protective cover 1 and the bearing base 4 from vibrating and generating noise, and the same thickness as the bearing base 4 can further provide a buffering effect to control the noise generated by the device;

[0037] An air outlet duct 5 is provided on the left side of the protective cover 1, and a spoiler 10 and a silencer hole 11 are provided in the air outlet duct 5. A blast chamber 8 is provided on the right side of the air outlet duct 5. The upper surface of the supporting base 4 is fixedly connected to the blast chamber 8. The left side of the blast chamber 8 is fixedly connected to the motor 9. The right output shaft of the motor 9 is fixedly connected to the fixed disk 12, and the right side of the fixed disk 12 is fixedly connected to a total of twenty-one fan blades 13. The fan blades 13 are generally arc-shaped structures, and triangular notches are provided at the upper and lower ends of the fan blades 13. The right side surface of the fan blades 13 is evenly paved with hemispherical grooves. The device can reduce the power transmission level and improve the power transmission efficiency by fixedly connecting the right output shaft of the motor 9 to the fixed disk 12, and the right side of the fixed disk 12 is fixedly connected to a total of two Eleven fan blades 13 can reduce the resonance of air, thereby reducing noise, and triangular notches are provided at the upper and lower ends of the fan blades 13, and hemispherical grooves are evenly laid on the right surface, which can play a role in turbulence, reduce air resistance, and thus reduce noise. A motor 9 is installed on the left side of the blast chamber 8, and the motor 9 is provided with a fixed plate 12 and fan blades 13. A sound insulation pipe 6 is installed on the right side of the blast chamber 8, and an air inlet hole 14 is provided on the inside of the sound insulation pipe 6. The sound insulation pipe 6 is threadedly connected to the center position on the right side of the blast chamber 8. The sound insulation pipe 6 adopts a traditional technical solution. A total of nineteen air inlet holes 14 are provided in the sound insulation pipe 6, and the sound insulation pipe 6 is filled with a large amount of sound insulation cotton. The device adopts the traditional technical solution to insulate The sound pipe 6 can reduce the airflow noise generated when the air is taken in, and the support of the air filter 2 can reduce the probability of debris damaging the equipment, and a support frame 7 is installed at the midline position of the soundproof pipe 6, and the air outlet pipe 5 is fixedly connected to the lower left side of the blast chamber 8. Silencers 11 are evenly arranged on both sides of the inner wall of the air outlet pipe 5. The silencers 11 are cylindrical holes of varying depths. A total of five spoilers 10 are evenly fixedly connected in the air outlet pipe 5. The right side of the spoiler 10 is a conical structure, and wavy stripes are evenly fixed on the upper and lower surfaces of the spoiler 10. A square frame with circular through holes is fixed on the left edge of the air outlet pipe 5. The device is equipped with silencers 11 evenly arranged on both sides of the inner wall of the air outlet pipe 5 to match the upper and lower surfaces of the spoiler 10. Uniformly fixed wavy stripes can make the circulating air turbulent, thereby reducing the possibility of resonance between the air and the inner wall of the air outlet duct 5, and further controlling the generation of noise. The protective cover 1 adopts a hollow structure filled with polyethylene foam, and a mesh bracket is arranged inside the protective cover 1. The device adopts a hollow structure filled with polyethylene foam and uses a mesh bracket as a skeleton in the protective cover 1. On the basis of the excellent protection capability of the protective cover 1, it has a sound insulation effect. The motor 9 is cooled by a water-cooling component, and a radiator heat dissipation component is installed at the bottom of the supporting base 4. The device improves the utilization of space by installing heat dissipation components such as a radiator at the bottom of the supporting base 4, and at the same time improves the endurance of the motor 9.

[0038] Working principle: When using this impeller fan with a drag reduction and noise reduction structure, first connect the ventilation duct to the equipment, then start the equipment, the motor 9 drives the fixed disk 12 and the fan blades 13 to start rotating to generate suction, and the air is sucked in from outside the air filter 2 and into the sound insulation pipe 6. The airflow in the sound insulation pipe 6 will be divided into multiple streams, and at the same time, the sound insulation cotton will absorb part of the airflow noise. The airflow passing through the blast chamber 8 will be disturbed and discharged by the fan blades 13, and further dispersed through the silencer holes 11 and the spoiler 10 in the outlet duct 5, so that the air cannot resonate with the outlet duct 5 and the blast chamber 8 to produce noise.

[0039] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An impeller fan with a drag and noise reduction structure, comprising a protective cover (1), an air filter (2), a rubber foot pad (3), a bearing base (4), an air outlet pipe (5), a sound insulation pipe (6), a support frame (7), a blast chamber (8), a motor (9), a spoiler (10), a silencer hole (11), a fixing plate (12), a fan blade (13) and an air inlet hole (14); An air filter (2) is installed on the right side of the protective cover (1), and a supporting base (4) is installed below the protective cover (1), and a rubber foot pad (3) is installed below the supporting base (4); Its characteristics are: An air outlet duct (5) is provided on the left side of the protective cover (1), a spoiler (10) and a silencer hole (11) are provided in the air outlet duct (5), a blast chamber (8) is provided on the right side of the air outlet duct (5), a motor (9) is installed on the left side of the blast chamber (8), and the motor (9) is provided with a fixing plate (12) and a fan blade (13), a sound insulation duct (6) is installed on the right side of the blast chamber (8), an air inlet hole (14) is provided inside the sound insulation duct (6), and a support frame (7) is installed at the midline position of the sound insulation duct (6).

2. The impeller fan with a drag and noise reduction structure according to claim 1, characterized in that: The right side of the protective cover (1) is fixedly connected to the air filter (2); a groove is provided at the edge of the upper surface of the supporting base (4); and the upper portion of the supporting base (4) is snap-fitted and connected to the protective cover (1); the four top corners of the bottom of the supporting base (4) are fixedly connected to rubber foot pads (3); and the rubber foot pads (3) have the same thickness as the supporting base (4).

3. The impeller fan with a drag and noise reduction structure according to claim 2, characterized in that: The upper surface of the supporting base (4) is fixedly connected to the blast chamber (8), the left side of the blast chamber (8) is fixedly connected to the motor (9), the right side output shaft of the motor (9) is fixedly connected to the fixed disk (12), and the right side of the fixed disk (12) is fixedly connected to a total of twenty-one fan blades (13), the fan blades (13) are generally arc-shaped structures, and triangular notches are provided at the upper and lower ends of the fan blades (13), and the right side surface of the fan blades (13) is evenly paved with hemispherical grooves.

4. The impeller fan with a drag and noise reduction structure according to claim 3, characterized in that: The center position on the right side of the blast chamber (8) is threadedly connected to a sound insulation pipe (6). The sound insulation pipe (6) adopts a traditional technical solution. A total of nineteen air inlet holes (14) are opened in the sound insulation pipe (6), and the sound insulation pipe (6) is filled with a large amount of sound insulation cotton.

5. The impeller fan with a drag and noise reduction structure according to claim 4, characterized in that: The lower left side of the blast chamber (8) is fixedly connected to the air outlet duct (5), and silencer holes (11) are evenly provided on both sides of the inner wall of the air outlet duct (5). The silencer holes (11) are cylindrical holes of varying depths. Five spoilers (10) are evenly fixedly connected to the air outlet duct (5), and the right side of the spoiler (10) is a conical structure, and wavy stripes are evenly fixed on the upper and lower surfaces of the spoiler (10). A square frame with circular through holes is fixed on the left edge of the air outlet duct (5).

6. The impeller fan with a drag and noise reduction structure according to claim 1, characterized in that: The protective cover (1) has a hollow structure filled with polyethylene foam, and a mesh bracket is provided inside the protective cover (1).

7. The impeller fan with a drag and noise reduction structure according to claim 1, characterized in that: The motor (9) is cooled by a water cooling assembly, and a cooling radiator assembly is installed at the bottom of the supporting base (4).

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