Energy-saving and noise-eliminating centrifugal fan

Abstract

The energy-saving noise-eliminating centrifugal fan comprises a fan body, a buffer frame, a noise-eliminating barrel and a water tank, a motor is fixedly installed on the side wall of the fan body, an air inlet is formed in the center of the side wall of the fan body on the opposite side of the motor, and the noise-eliminating barrel is detachably installed on the side wall of the fan body on the outer side of the air inlet; an inner cylinder is fixedly mounted on the inner side of the silencing cylinder, an outer cylinder is fixedly mounted on the outer side of the inner cylinder, and a plurality of side air ports are uniformly formed in the side walls of the inner cylinder and the outer cylinder; wind power is divided and weakened through the side air ports formed in the surfaces of the inner barrel and the outer barrel on the inner side of the silencing barrel, so that friction and collision are reduced, sound is reduced, and the silencing effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of centrifugal fans, and in particular to an energy-saving and noise-reducing centrifugal fan. Background Art

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. During operation, the airflow enters the blade space from the fan axis, and then rotates with the impeller under the drive of the impeller. The energy is increased under the action of inertia, and it leaves the impeller in the radial direction, relying on the centrifugal force generated to do work. During the operation of the centrifugal fan, noise will be generated, affecting the work efficiency of the staff.

[0003] Application No. 202120760966.0 discloses an energy-saving and silencer centrifugal fan, including a fan body, a sound-absorbing pad, connecting bolts, a buffer spring and a hose, etc. The sound-absorbing pad can effectively absorb the noise generated by vibration during the operation of the centrifugal fan, and at the same time play a shock-absorbing role, reduce noise, improve the working environment, and absorb heat from the outer wall of the fan body, and spray the absorbed coolant through the nozzle to quickly cool down.

[0004] However, in use, there are the following defects:

[0005] Although sound-absorbing pads are used to cushion the vibration of the fan, and coolant is sprayed on the outer wall of the fan to cool it down, the sound caused by the squeezing and friction of the air cannot be eliminated during the operation of the fan, thus affecting the noise elimination efficiency. Utility Model Content

[0006] The purpose of the present application is to provide an energy-saving and silenced centrifugal fan, which solves the problem raised in the background technology that although a sound-absorbing pad is used to cushion the vibration of the fan, and coolant is sprayed on the outer wall of the fan to cool it down, the sound caused by the squeezing and friction of the air during the operation of the fan cannot be eliminated, thereby affecting the noise elimination efficiency.

[0007] To achieve the above-mentioned objectives, the present application provides the following technical solutions: an energy-saving and silencer centrifugal fan, comprising a fan body, a buffer frame, a silencer and a water tank, wherein a motor is fixedly installed on the side wall of the fan body, an air inlet is provided in the center of the side wall of the fan body on the opposite side of the motor, a silencer is detachably installed on the side wall of the fan body outside the air inlet, an inner cylinder is fixedly installed on the inner side of the silencer, an outer cylinder is fixedly installed on the outer side of the inner cylinder, and a number of side air outlets are evenly provided on the side walls of the inner cylinder and the outer cylinder.

[0008] In this technical solution, the noise caused by the extrusion and friction of the air can be reduced by the silencer and the buffer frame. The air enters the inner side of the fan body from the silencer, and the inner and outer cylinders inside the silencer will divert the air, and the side air vents on the side walls of the inner and outer cylinders will further divert the air, thereby reducing the sound caused by extrusion and friction, and the sound-absorbing cotton on the inner wall of the buffer frame can buffer the air leaving the fan body and reduce the impact of the air on the side wall, thereby reducing air noise and improving the silencing effect. At the same time, the inner side of the fan body can be cooled by the water tank, water pump and water spray pipe. The water tank is filled with distilled water, which will not rust the metal. The water pump draws out water after power is turned on, and mist-like water droplets are sprayed out by the water spray pipe. The water droplets enter the inner side of the fan body under the drive of the air, and after absorbing the heat, they will become water vapor and leave with the air, thereby cooling the inner side of the fan body, reducing the energy consumption of the motor due to high temperature, and improving the energy-saving effect.

[0009] As an optional solution of the technical solution of the present application, a buffer frame is detachably installed on the outer side of the air outlet at the top of the fan body, and sound-absorbing cotton is fixedly installed on the inner wall of the buffer frame.

[0010] As an optional solution of the technical solution of the present application, support rods are fixedly welded to both sides of the bottom of the fan body, and the bottom of the support rods is fixedly connected to the base.

[0011] As an optional solution of the technical solution of the present application, a water tank is movably installed on the top of the base below the silencer, a water pump is movably installed on the top of the water tank, and the top of the water pump is connected to a water spray pipe.

[0012] As an optional solution of the technical solution of the present application, a rotating shaft is fixedly installed on the inner side wall of the fan body, fan blades are fixedly installed on the side wall of the rotating shaft, and the rear end of the transmission shaft of the motor is fixedly connected to the rotating shaft.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present application uses a silencer and a buffer frame to reduce the noise caused by the extrusion and friction of the air. The inner cylinder and the outer cylinder inside the silencer will divert the air, and the side air vents on the side walls of the inner cylinder and the outer cylinder will further divert the air, thereby reducing the sound caused by the extrusion and friction. The sound-absorbing cotton on the inner wall of the buffer frame can buffer the air leaving the fan body, reducing the impact of the air on the side wall, thereby reducing the air noise and improving the silencing effect.

[0015] 2. The present application can cool down the inside of the fan body through a water tank, a water pump and a water spray pipe. The water tank is filled with distilled water. The water pump draws out the water after being powered on, and sprays out mist-like water droplets from the water spray pipe. The water droplets enter the inside of the fan body driven by the air, and after absorbing heat, they turn into water vapor and leave with the air, thereby cooling the inside of the fan body, reducing the impact of high temperature on the energy consumption of the motor, and improving the energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0017] Figure 1 This is an overall schematic diagram of an energy-saving and noise-reducing centrifugal fan for this application;

[0018] Figure 2 A rear view schematic diagram of an energy-saving and noise-reducing centrifugal fan for this application

[0019] Figure 3 This is a schematic cross-sectional structure diagram of an energy-saving and silencer centrifugal fan according to the present application.

[0020] In the figure: 1. fan body; 2. motor; 201. shaft; 202. fan blades; 3. base; 4. support rod; 5. buffer frame; 6. sound-absorbing cotton; 7. air inlet; 8. water tank; 9. water pump; 10. water spray pipe; 11. silencer; 12. inner tube; 13. outer tube; 14. side air outlet. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, they are further explained below in conjunction with specific implementation methods.

[0022] like Figure 1 As shown, an energy-saving and silencer centrifugal fan includes a fan body 1, a buffer frame 5, a silencer 11 and a water tank 8. Support rods 4 are fixedly welded on both sides of the bottom of the fan body 1, and the bottom of the support rods 4 is fixedly connected to the base 3.

[0023] like Figure 1 and Figure 2 As shown, a buffer frame 5 is detachably installed on the outer side of the air outlet at the top of the fan body 1, and a sound-absorbing cotton 6 is fixedly installed on the inner wall of the buffer frame 5. The sound-absorbing cotton 6 can reduce the collision and friction of air on the opening side wall when leaving the fan body 1.

[0024] like Figure 2 and Figure 3As shown, an air inlet 7 is provided in the center of the side wall of the fan body 1 on the opposite side of the motor 2, and a silencer 11 is detachably installed on the side wall of the fan body 1 outside the air inlet 7, an inner cylinder 12 is fixedly installed on the inner side of the silencer 11, and an outer cylinder 13 is fixedly installed on the outer side of the inner cylinder 12. A number of side air vents 14 are evenly provided on the side walls of the inner cylinder 12 and the outer cylinder 13, and the side air vents 14 can divert the air in the inner cylinder 12 and the outer cylinder 13 to reduce extrusion and friction.

[0025] like Figure 3 As shown, a water tank 8 is movably mounted on the top of the base 3 below the silencer 11, a water pump 9 is movably mounted on the top of the water tank 8, and a water spray pipe 10 is connected to the top of the water pump 9. The water spray pipe 10 can spray distilled water in a mist form.

[0026] like Figure 3 As shown, the side wall of the fan body 1 is fixedly mounted with a motor 2, the inner side wall of the fan body 1 is fixedly mounted with a rotating shaft 201, the side wall of the rotating shaft 201 is fixedly mounted with fan blades 202, and the rear end of the transmission shaft of the motor 2 is fixedly connected to the rotating shaft 201.

[0027] In actual use, the noise caused by the squeezing and friction of the air can be reduced by the silencer 11 and the buffer frame 5. The air enters the inner side of the fan body 1 from the silencer 11, and the inner cylinder 12 and the outer cylinder 13 inside the silencer 11 will divert the air, and the side air vents 14 on the side walls of the inner cylinder 12 and the outer cylinder 13 will further divert the air, thereby reducing the sound caused by squeezing and friction, and the sound-absorbing cotton 6 on the inner wall of the buffer frame 5 can buffer the air leaving the fan body 1, reducing the impact of the air on the side wall, thereby reducing the air Noise is reduced and the silencing effect is improved. At the same time, the inner side of the fan body 1 can be cooled by the water tank 8, the water pump 9 and the water spray pipe 10. The water tank 8 is filled with distilled water, which will not rust the metal. The water pump 9 draws out water after being powered on, and sprays mist-like water droplets from the water spray pipe 10. The mist-like water droplets enter the inner side of the fan body 1 driven by the air, and turn into water vapor after absorbing heat, and leave with the air, thereby cooling the inner side of the fan body 1, reducing the energy consumption of the motor 2 due to high temperature, and improving the energy-saving effect.

Claims

1. An energy-saving and noise-reducing centrifugal fan, comprising a fan body (1), a buffer frame (5), a silencer cylinder (11) and a water tank (8), characterized in that: A motor (2) is fixedly mounted on the side wall of the fan body (1); an air inlet (7) is provided in the center of the side wall of the fan body (1) on the side opposite to the motor (2); a silencer (11) is detachably mounted on the side wall of the fan body (1) outside the air inlet (7); an inner cylinder (12) is fixedly mounted on the inner side of the silencer cylinder (11); an outer cylinder (13) is fixedly mounted on the outer side of the inner cylinder (12); and a plurality of side air outlets (14) are evenly disposed on the side walls of the inner cylinder (12) and the outer cylinder (13).

2. The energy-saving and noise-reducing centrifugal fan according to claim 1, characterized in that: A buffer frame (5) is detachably mounted on the outside of the air outlet at the top end of the fan body (1), and a sound-absorbing cotton (6) is fixedly mounted on the inner side wall of the buffer frame (5).

3. The energy-saving and noise-reducing centrifugal fan according to claim 1, characterized in that: Support rods (4) are fixedly welded to both sides of the bottom of the fan body (1), and the bottom of the support rods (4) is fixedly connected to the base (3).

4. The energy-saving and noise-reducing centrifugal fan according to claim 1, characterized in that: A water tank (8) is movably mounted on the top of the base (3) below the muffler (11), a water pump (9) is movably mounted on the top of the water tank (8), and a water spray pipe (10) is connected to the top of the water pump (9).

5. The energy-saving and noise-reducing centrifugal fan according to claim 1, characterized in that: A rotating shaft (201) is fixedly mounted on the inner side wall of the fan body (1), a fan blade (202) is fixedly mounted on the side wall of the rotating shaft (201), and a rear end of the transmission shaft of the motor (2) is fixedly connected to the rotating shaft (201).

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