Low-noise fan shell

Abstract

The utility model belongs to the technical field of fan shells, and particularly relates to a low-noise fan shell which is characterized in that the low-noise fan shell comprises a fan shell, an air inlet is formed in the front side of the fan shell, and an air outlet is formed in the right side of the fan shell; the noise reduction mechanism is located on the front side of the fan shell, the noise reduction mechanism is used for adjusting the air inlet angle of the air inlet, and the noise reduction mechanism comprises a mounting frame, a shell, a motor, a worm, a worm gear, a rotating rod, an adjusting piece and an airflow sensor; the installation frame is fixedly installed on the front side of the fan shell, the shell is fixedly installed on the right side of the installation frame, the motor is fixedly installed on the top of an inner cavity of the shell, the output end of the motor is fixedly connected with the worm, and the front side of the worm is meshed with the worm gear. The stability of airflow and balanced operation of the system can be automatically adjusted, the adverse effect of noise generated by airflow fluctuation is avoided, and the whole working environment is kept quiet and stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan shell technical field especially relates to a low noise fan shell. BACKGROUND

[0002] Low noise fan shell refers to the shell structure that a series of optimization techniques and materials are adopted in the design and manufacturing process, so that the noise level of the fan can be significantly reduced when the fan is running, and the goal is to reduce the sound generated during the operation of the fan, especially mechanical noise and airflow noise, and to provide a more quiet working environment.

[0003] However, the existing fan shell has the problem that when in use, the pressure at the air inlet of the fan shell is large, so that the airflow enters the circulating fan at a high speed, which easily generates a large noise inside the circulating fan shell, thereby causing noise pollution during use, affecting the working environment, and being not conducive to use. Therefore, the utility model provides a low noise fan shell to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses a low noise fan shell, which is used to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A low noise fan shell comprises:

[0007] A fan shell is provided with an air inlet on the front side, and an air outlet on the right side.

[0008] A noise reduction mechanism is located on the front side of the fan shell, and is used to adjust the air inlet angle of the air inlet.

[0009] As a preferred scheme of the utility model, the noise reduction mechanism comprises a mounting bracket, a shell, a motor, a worm, a worm wheel, a rotating rod, an adjusting piece and an airflow sensor.

[0010] The mounting bracket is fixedly installed on the front side of the fan shell, the shell is fixedly installed on the right side of the mounting bracket, the motor is fixedly installed on the top of the inner cavity of the shell, the output end of the motor is fixedly connected with the worm, the front side of the worm is engaged with the worm wheel, the number of the worm wheels is six, the left side of the worm wheel is fixedly connected with the rotating rod, the left side of the rotating rod penetrates into the inner cavity of the mounting bracket and is fixedly connected with the adjusting piece, the left side of the adjusting piece is rotatably connected with the inner wall of the mounting bracket through a rotating shaft, the airflow sensor is fixedly installed on the bottom of the inner cavity of the mounting bracket, and the airflow sensor is electrically connected with the motor.

[0011] As a preferred scheme of the utility model, the right side of the mounting frame is provided with a through hole corresponding to the rotating rod, and the inner cavity of the through hole is rotatably connected with the surface of the rotating rod through a rotating shaft.

[0012] As a preferred scheme of the utility model, the surface of the fan shell is fixedly connected with a sound insulation layer, and the material of the sound insulation layer is polyester fiber sound absorbing cotton.

[0013] As a preferred scheme of the utility model, the surface of the sound insulation layer is fixedly connected with a shock absorption layer, and the material of the shock absorption layer is rubber.

[0014] As a preferred scheme of the utility model, the surface of the shock absorption layer is fixedly connected with an inner lining protective layer, and the material of the inner lining protective layer is polyurethane.

[0015] Beneficial effects:

[0016] 1. The air flow sensor monitors the air inlet, when the air flow is too large, the air flow sensor controls the motor to start and drives the worm to rotate, the worm drives the worm gear, the rotating rod and the adjusting piece to rotate, the adjusting piece reduces the angle, the angle of the adjusting piece is reduced or close to parallel, the resistance when the air flow passes through is reduced, the turbulence and wind howling caused by too fast air flow are prevented, and the angle of the blade of the adjusting piece is usually increased when the air flow is too small, that is, the angle of the adjusting piece becomes more inclined.

[0017] In the utility model: through the cooperation of the noise reduction mechanism, the stability of the air flow and the balanced operation of the system can be automatically adjusted, the adverse effects of air flow fluctuation are avoided, and the whole working environment is more quiet and stable. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of the utility model;

[0019] Figure 2 It is the structural schematic diagram of the mounting frame and the air flow sensor of the utility model;

[0020] Figure 3 It is the structural schematic diagram of the worm gear box adjusting piece of the utility model;

[0021] Figure 4 It is the structural schematic diagram of the shell and the inner lining protective layer of the utility model.

[0022] In the drawing: 1, fan shell; 2, mounting frame; 3, shell; 4, motor; 5, worm; 6, worm gear; 7, rotating rod; 8, adjusting piece; 9, air flow sensor; 10, sound insulation layer; 11, shock absorption layer; 12, inner lining protective layer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments.

[0024] Embodiment

[0025] With reference to Figures 1-4 A low-noise fan shell, comprising:

[0026] The fan shell 1 is provided with an air inlet on the front side, and an air outlet on the right side.

[0027] The noise reduction mechanism is located on the front side of the fan shell 1, and is used for adjusting the air inlet angle.

[0028] As a preferred scheme of the present utility model, the noise reduction mechanism comprises: a mounting frame 2, a shell 3, a motor 4, a worm 5, a worm wheel 6, a rotating rod 7, an adjusting piece 8 and an airflow sensor 9.

[0029] The mounting frame 2 is fixedly installed on the front side of the fan shell 1, the shell 3 is fixedly installed on the right side of the mounting frame 2, the motor 4 is fixedly installed on the top of the inner cavity of the shell 3, the output end of the motor 4 is fixedly connected with the worm 5, the front side of the worm 5 is engaged with the worm wheel 6, the number of the worm wheel 6 is six, the left side of the worm wheel 6 is fixedly connected with the rotating rod 7, the left side of the rotating rod 7 penetrates into the inner cavity of the mounting frame 2 and is fixedly connected with the adjusting piece 8, the left side of the adjusting piece 8 is rotatably connected with the inner wall of the mounting frame 2 through a rotating shaft, the airflow sensor 9 is fixedly installed on the bottom of the inner cavity of the mounting frame 2, the airflow sensor 9 is electrically connected with the motor 4, the airflow sensor 9 is used for monitoring the air inlet amount of the air inlet, when the airflow is too large, the airflow sensor 9 controls the motor 4 to be turned on and drives the worm 5 to rotate, the worm 5 drives the worm wheel 6, the rotating rod 7 and the adjusting piece 8 to rotate, so that the angle of the adjusting piece 8 is reduced, the angle of the adjusting piece 8 is reduced or close to parallel, the resistance when the airflow passes through is reduced, the turbulence and the wind howling sound caused by the airflow passing too fast are prevented, and when the airflow is too small, the angle of the blade of the adjusting piece 8 is usually increased, that is, the angle of the adjusting piece 8 becomes more inclined.

[0030] As a preferred scheme of the present utility model, the right side of the mounting frame 2 is provided with a through hole corresponding to the rotating rod 7, the inner cavity of the through hole is rotatably connected with the surface of the rotating rod 7 through a rotating shaft, the through hole and the surface of the rotating rod 7 are rotatably connected through the rotating shaft, and the stability of the rotating rod 7 when rotating can be improved.

[0031] As a preferred scheme of the present utility model, the surface of the fan shell 1 is fixedly connected with a sound insulation layer 10, the material of the sound insulation layer 10 is polyester fiber sound-absorbing cotton, and the noise generated by the fan can be reduced by arranging the sound insulation layer 10.

[0032] As one preferred scheme of the utility model, the surface of the sound insulation layer 10 is fixedly connected with a shock absorption layer 11, the material of the shock absorption layer 11 is rubber, and the shock absorption layer 11 can absorb vibration and reduce vibration transmission to the shell, thereby further reducing noise.

[0033] As one preferred scheme of the utility model, the surface of the shock absorption layer 11 is fixedly connected with an inner lining protection layer 12, the material of the inner lining protection layer 12 is polyurethane, the inner lining protection layer 12 usually adopts a corrosion-resistant coating to play a role of moisture-proof and corrosion-proof and protect the long-term use of the fan shell 1.

[0034] Through the cooperation of the noise reduction mechanism, the stability of air flow and the balanced operation of the system can be automatically adjusted, the adverse effects of noise caused by air flow fluctuation are avoided, and the entire working environment is more quiet and stable.

[0035] It should be noted that the electric equipment used in the application is externally connected to a power supply, and the type of motor 4 and air flow sensor 9 used is selected by a person skilled in the relevant art, and the above motor 4 and air flow sensor 9 are all prior art, and the present scheme will not be described in detail.

[0036] The working principle of the utility model is as follows: in use, the air flow sensor 9 monitors the air inlet amount of the air inlet, when the air flow is too large, the air flow sensor 9 controls the motor 4 to be started and drives the worm 5 to rotate, the worm 5 drives the worm wheel 6, the rotating rod 7 and the adjusting piece 8 to rotate, the adjusting piece 8 reduces the angle, the angle of the adjusting piece 8 is reduced or close to parallel, the resistance when the air flow passes through is reduced, the turbulence and wind howling caused by too fast air flow are prevented, and when the air flow is too small, the angle of the blade of the adjusting piece 8 is usually increased, that is, the angle of the adjusting piece 8 becomes more inclined.

[0037] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A low-noise fan housing, characterized in that, include: The fan housing (1) has an air inlet on the front side and an air outlet on the right side. The noise reduction mechanism is located on the front side of the fan casing (1) and is used to adjust the air inlet angle.

2. The low-noise fan housing according to claim 1, characterized in that, The noise reduction mechanism includes: a mounting bracket (2), a housing (3), a motor (4), a worm gear (5), a worm wheel (6), a rotating rod (7), an adjusting plate (8), and an airflow sensor (9); The mounting bracket (2) is fixedly installed on the front side of the fan housing (1), the housing (3) is fixedly installed on the right side of the mounting bracket (2), the motor (4) is fixedly installed on the top of the inner cavity of the housing (3), the output end of the motor (4) is fixedly connected to the worm (5), the front side of the worm (5) meshes with the worm wheel (6), there are six worm wheels (6), the left side of the worm wheel (6) is fixedly connected to the rotating rod (7), the left side of the rotating rod (7) passes through the inner cavity of the mounting bracket (2) and is fixedly connected to the adjusting plate (8), the left side of the adjusting plate (8) is rotatably connected to the inner wall of the mounting bracket (2) through the rotating shaft, the airflow sensor (9) is fixedly installed on the bottom of the inner cavity of the mounting bracket (2), and the airflow sensor (9) is electrically connected to the motor (4).

3. The low-noise fan housing according to claim 2, characterized in that, The mounting bracket (2) has a through hole on the right side corresponding to the rotating rod (7), and the inner cavity of the through hole is rotatably connected to the surface of the rotating rod (7) through a rotating shaft.

4. The low-noise fan housing according to claim 2, characterized in that, A sound insulation layer (10) is fixedly connected to the surface of the fan casing (1), and the material of the sound insulation layer (10) is polyester fiber sound-absorbing cotton.

5. A low-noise fan housing according to claim 4, characterized in that, A damping layer (11) is fixedly connected to the surface of the sound insulation layer (10), and the damping layer (11) is made of rubber.

6. The low-noise fan housing according to claim 5, characterized in that, An inner protective layer (12) is fixedly connected to the surface of the damping layer (11), and the material of the inner protective layer (12) is polyurethane.

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