Noise reduction device of air conditioner fan

Abstract

The utility model relates to the technical field of air conditioner fan noise reduction, in particular to an air conditioner fan noise reduction device. The utility model provides an air conditioner fan noise reduction device which comprises an air conditioner fan, L-shaped frames, a movable block, a first spring, a first damper, a connecting rod, a fixing plate, a second spring, a second damper and an installation plate. The L-shaped frames are symmetrically installed at the bottom of the air conditioner fan, and the rear ends of the L-shaped frames are connected with the movable block in a sliding mode. Two vertical first springs which are symmetrically distributed up and down are connected between the movable block and the L-shaped frame, and a first damper is installed between the rear end of the L-shaped frame and the movable block. Through the synergistic effect of the first springs, the first dampers, the second springs and the second dampers, vibration in the up-down direction and the left-right direction generated during operation of the air conditioner fan is effectively buffered and absorbed. Due to the fact that vibration is an important source for generating noise, noise caused by vibration is greatly reduced while damping is conducted, and a quiet using environment is created for a user.

Description

TECHNICAL FIELD

[0001] The utility model relates to air -conditioner fan noise reduction technical field especially relates to air -conditioner fan noise reduction device. BACKGROUND

[0002] With the continuous improvement of people's living standards, air conditioner has become the indispensable electrical equipment in modern family, office environment etc. Air conditioner fan as an important part of air conditioning system, its main function is to realize the circulation and exchange of air, to achieve the purpose of adjusting indoor temperature, humidity and air quality.

[0003] However, in the operation process of air conditioner fan, due to the rotation of motor, the rotation of fan blade and the impact of airflow, vibration will inevitably be produced. These vibrations will be transmitted to the surrounding environment through the structure of the fan, producing noise. The traditional air conditioner fan installation mode often lacks effective damping measures, resulting in large vibration noise. For example, the fan is directly fixed on the mounting frame without setting the buffer device, when the fan produces vibration, the mounting frame will transmit the vibration directly to the wall or other supporting structure, thereby amplifying the noise, these noises not only will cause interference to people's life and work environment, but also may affect people's physical and mental health. SUMMARY

[0004] In order to overcome the above-mentioned shortcomings, the technical problem of the utility model is to provide air conditioner fan noise reduction device.

[0005] The technical implementation scheme of the utility model is: air conditioner fan noise reduction device, including air conditioner fan, L type frame, movable block, first spring, first damping, connecting rod, fixed plate, second spring, second damping and mounting plate, air conditioner fan bottom symmetry installs L type frame, L type frame rear end slidingly connects movable block, movable block and L type frame between connecting have two vertical first spring that distribute symmetrically up and down, L type frame rear end and movable block between installing first damping, two movable blocks mutually close one side slidingly connects fixed plate through two connecting rods, connecting rod on symmetry has transverse second spring, wherein the outer second spring two ends are connected with the one side of fixed plate and movable block respectively, the inner second spring two ends are connected with connecting rod and the other side of fixed plate respectively, fixed plate top and movable block between connecting have second damping, fixed plate rear side connects with mounting plate.

[0006] Further, the first spring and the second spring are both cylindrical coil springs, and the material is 65Mn spring steel.

[0007] Further, it further includes a fairing, and the air outlet of the air conditioner fan is provided with the fairing with the opening downward.

[0008] Further, the filter screen is a multi-layer composite structure comprising a coarse filter screen on the outer layer and a fine filter screen on the inner layer.

[0009] Further, the filter screen is a multi-layer composite structure comprising a coarse filter screen on the outer layer and a fine filter screen on the inner layer.

[0010] Further, the filter screen is a multi-layer composite structure comprising a coarse filter screen on the outer layer and a fine filter screen on the inner layer.

[0011] The utility model has the advantages of: 1, through the synergies of first spring, first damping, second spring and second damping, the vibration in up and down and left and right directions generated when the air -conditioning fan operates is effectively buffered and is absorbed. Since vibration is an important source of noise, the noise caused by vibration is greatly reduced at the same time of shock absorption, and quiet use environment is created for the user.

[0012] 2, the air flow of the air outlet of the fairing is diffused gently, the turbulent flow and vortex are inhibited, the violent collision of the air flow and the surrounding air is reduced, and the running noise is reduced; the sound absorption pad can reduce the noise of raindrop, and further improve the noise reduction effect.

[0013] 3, the sound absorption pad on the top of the air -conditioning fan is arranged in a manner that the front is low and the back is high, can guide the rain in the rainy season, avoid the waterlogging, prevent the equipment damage or failure caused by waterlogging. DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0015] Figure 2 It is a three-dimensional structure schematic view of the utility model L type frame, movable block and first spring etc.

[0016] Figure 3 It is a three-dimensional structure schematic view of the utility model connecting rod, fixed plate and second spring etc.

[0017] Figure 4 It is a three-dimensional structure schematic view of the utility model air -conditioning fan, fairing and filter screen parts.

[0018] In the above drawing: 1: air -conditioning fan, 2: L type frame, 4: movable block, 5: first spring, 6: first damping, 7: connecting rod, 8: fixed plate, 9: second spring, 10: second damping, 11: mounting plate, 12: fairing, 13: filter screen, 14: support column, 15: sound absorption pad. DETAILED DESCRIPTION

[0019] Reference herein to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0020] Embodiment: Air conditioner fan noise reduction device, as shown in Figures 1-3 As shown, comprising air conditioner fan 1, L-shaped frame 2, movable block 4, first spring 5, first damping 6, connecting rod 7, fixed plate 8, second spring 9, second damping 10 and mounting plate 11, air conditioner fan 1 bottom left and right symmetry through bolt installation has L-shaped frame 2, L-shaped frame 2 rear end slidingly connected with movable block 4, movable block 4 and L-shaped frame 2 between the connection has two vertical first spring 5 symmetrically distributed, at the same time, L-shaped frame 2 rear end and movable block 4 between the installation has first damping 6, two movable block 4 each other close side through two connecting rod 7 slidingly connected with fixed plate 8, connecting rod 7 on left and right symmetry with horizontal second spring 9, wherein the outer second spring 9 both ends are respectively welded with one side of fixed plate 8 and movable block 4, the inner second spring 9 both ends are respectively welded with connecting rod 7 and the other side of fixed plate 8, first spring 5 and second spring 9 are cylindrical coil spring, material is 65Mn spring steel, surface is treated by galvanizing, in order to improve the strength and corrosion resistance of spring, fixed plate 8 top and movable block 4 between the connection has second damping 10, fixed plate 8 rear side through bolt connection has mounting plate 11, the mounting plate 11 is convenient for the whole air conditioner fan 1 installation on the wall.

[0021] The whole air conditioner fan 1 assembly is fixed on the wall at a specific position through mounting plate 11, and the air generated by the operation inside the air conditioner fan 1 is discharged through the flow guide cover 12. In the process of operation of the air conditioner fan 1, vibration will inevitably occur, when the vibration force in the up-down direction appears, the L-shaped frame 2 will vibrate up and down along the movable block 4, at this time, the first spring 5 and the first damping 6 play a role, the first spring 5 absorbs the vibration force through elastic deformation, and the first damping 6 dissipates the vibration force through its damping effect, thereby effectively reducing the vibration force in the up-down direction, when the vibration force in the left-right direction appears, the movable block 4 and the connecting rod 7 will move in the left-right direction along the fixed plate 8, the second spring 9 and the second damping 10 start to work, the second spring 9 absorbs the vibration force in the left-right direction by stretching and contracting, and the second damping 10 converts the absorbed vibration force into heat energy and consumes it, thereby eliminating the vibration force in the left-right direction. Through the above-mentioned mode, the air conditioner fan 1 is realized in the left-right and up-down directions. The vibration is reduced, and the noise caused by the vibration is greatly reduced at the same time.

[0022] As shown in Figure 1 And Figure 4As shown, it also includes a fairing 12 and filter screen 13, the air outlet of the air conditioner fan 1 is provided with a downward opening fairing 12, the fairing 12 can guide the air flow of the air outlet to diffuse smoothly, reduce the violent collision of air flow with the surrounding air, inhibit the formation of turbulence and vortex, the upper and lower ends of the fairing 12 are provided with filter screens 13, which are used to filter impurities in the air to prevent impurities from entering the air conditioner fan 1, thereby ensuring the normal operation and service life of the air conditioner fan 1, the filter screen 13 is a multi-layer composite structure, including an outer coarse filter screen and an inner fine filter screen, the coarse filter screen is used to filter larger impurities, and the fine filter screen is used to filter small particles.

[0023] As Figure 1 As shown, it also includes a support column 14 and a sound-absorbing pad 15, the top of the air conditioner fan 1 is symmetrically welded with support columns 14 on the front and rear sides, wherein the two support columns 14 on the front side are lower than the two support columns 14 on the rear side, and the four support columns 14 are connected with a sound-absorbing pad 15 at the top, the sound-absorbing pad 15 is in a state of being lower in front and higher in back, in the rainy season, raindrops fall on the sound-absorbing pad 15, and the inclined arrangement can guide the rainwater and avoid water accumulation, and the sound-absorbing pad 15 can reduce noise when raindrops fall.

[0024] Although the present application is described in detail with reference to the above examples, it is obvious to those skilled in the art through the disclosure that various changes or modifications can be made to the present application without departing from the principles and spirit of the application defined in the claims. Therefore, the detailed description of the present application is only used to explain, not to limit the present application, and the protection scope is defined by the content of the claims.

Claims

1. An air conditioner fan noise reduction device, characterized in that: The device includes an air conditioning fan, an L-shaped frame, a movable block, a first spring, a first damper, a connecting rod, a fixed plate, a second spring, a second damper, and a mounting plate. The L-shaped frame is symmetrically mounted at the bottom of the air conditioning fan. A movable block is slidably connected to the rear end of the L-shaped frame. Two vertically distributed first springs are connected between the movable block and the L-shaped frame. A first damper is installed between the rear end of the L-shaped frame and the movable block. A fixed plate is slidably connected to the side of the two movable blocks that are close to each other via two connecting rods. Horizontal second springs are symmetrically fitted on the connecting rods. The two ends of the outer second spring are connected to one side of the fixed plate and the movable block, respectively, while the two ends of the inner second spring are connected to the connecting rod and the other side of the fixed plate, respectively. A second damper is connected between the top of the fixed plate and the movable block. A mounting plate is connected to the rear side of the fixed plate.

2. The air conditioner fan noise reduction device according to claim 1, characterized in that: Both the first and second springs are cylindrical helical springs made of 65Mn spring steel.

3. The air conditioner fan noise reduction device according to claim 2, characterized in that: It also includes a deflector, with the air outlet of the air conditioner fan having a downward-facing deflector.

4. The air conditioner fan noise reduction device according to claim 3, characterized in that: It also includes a filter screen; filters are installed at both the top and bottom ports of the air deflector.

5. The air conditioner fan noise reduction device according to claim 4, characterized in that: The filter screen has a multi-layered composite structure, including an outer coarse filter screen and an inner fine filter screen.

6. The air conditioner fan noise reduction device according to claim 5, characterized in that: It also includes support columns and sound-absorbing pads. Support columns are symmetrically connected to the front and rear sides of the top of the air conditioner fan. The two support columns on the front side are lower than the two support columns on the rear side. A sound-absorbing pad is connected to the top of the four support columns.

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