Noise reduction equipment for fan

Abstract

The utility model discloses fan noise reduction equipment which comprises a first connecting piece, the first connecting piece is of a rectangular structure, a second connecting piece is arranged on the surface of one side of the first connecting piece, the size of the second connecting piece is equal to that of the first connecting piece, and an air inlet is formed in the surface of the second connecting piece in a penetrating mode. The air inlet is of a square hollow steel frame structure, and the other first connecting piece is arranged on the surface of the other side of the second connecting piece. According to the noise reduction equipment for the draught fan, the noise reduction equipment is formed by connecting the first connecting piece, the second connecting piece and the third connecting piece, the first connecting piece, the second connecting piece and the third connecting piece are each of a multi-layer composite noise reduction structure, the noise absorption pore plate, the noise absorption layer and the noise absorption sponge are sequentially arranged to form a multi-layer noise absorption structure, and by means of the multi-layer noise absorption structure, noise reduction is achieved; noise generated in the operation process of the fan is effectively eliminated, and noise reduction is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fan noise reduction, in particular to a fan sound insulation and noise reduction device. Background Technique

[0002] In order to ensure the indoor air quality, biological or medical laboratories usually design an air purification system, and use a fan to exchange indoor and outdoor air. When the fan works, the noise is relatively large. And if the exhaust port is relatively close to the residential area, it will cause nuisance to the residents and be complained. Therefore, a sound insulation device is used in combination with the fan during use.

[0003] At present, the sound insulation measure for the fan is to set a sound insulation cover at the exhaust port of the fan, and use the sound insulation cover to isolate the noise during the operation of the fan. However, the single-layer sound insulation cover has low sound insulation efficiency, and it is inconvenient to overhaul the fan after installing the sound insulation cover. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fan sound insulation and noise reduction device. The device is provided with a device connected to the exhaust port of the fan, and uses a multi-layer sound absorption layer to isolate and absorb the noise, and is convenient to separate from the exhaust port of the fan, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A fan sound insulation and noise reduction device, including a first connector. The first connector is a rectangular structure. A second connector is arranged on one side surface of the first connector. The second connector is the same size as the first connector, and an air inlet is penetrated through the surface of the second connector. The air inlet is a square hollow steel frame structure. Another first connector is arranged on the other side surface of the second connector. The two first connectors are respectively fixedly connected to the two side surfaces of the second connector. The two first connectors and the second connector form the front plate mechanism of the sound insulation device, and a rear plate mechanism is arranged on one side of the front plate mechanism.

[0006] Preferably, the rear plate mechanism includes three first connectors, and the side surfaces of the three first connectors are sequentially connected. The front plate mechanism and the rear plate mechanism are arranged in parallel. The front plate mechanism and the rear plate mechanism are connected by another first connector. The front plate mechanism and the rear plate mechanism form a square hollow structure. A third connector is connected to the inner surface of the square hollow structure. The length of the third connector is shorter than that of the square hollow structure. There are two third connectors arranged parallel up and down. The square hollow structure and the two third connectors form the main body of the sound insulation device.

[0007] Adopting the above technical solution, the main body part of the device can be formed by using the front plate mechanism and the rear plate mechanism formed by connection.

[0008] Preferably, a support frame is fixedly connected to the lower surface of the square hollowing mechanism. The support frame is in a mesh structure welded by steel bars. A support leg is fixedly connected to the lower surface of the support frame. The support leg is in an inverted T-shaped structure and is symmetrically arranged on the lower surface of the support frame.

[0009] With the above technical solution, the support frame and the support legs can be used to support the device below.

[0010] Preferably, the first connecting member is a multi-layer composite sound-absorbing structure. The multi-layer composite sound-absorbing structure is provided with a sound-absorbing perforated plate sound-absorbing component to achieve the process of sound absorption and noise reduction of noise.

[0011] With the above technical solution, the multi-layer composite sound-absorbing structure can be used to absorb the noise generated during the operation of the fan.

[0012] Preferably, the multi-layer composite sound-absorbing structure includes a connecting frame. The connecting frame is square hollow. A steel plate is fixedly installed on one side surface of the connecting frame. The connecting frame and the steel plate form a box shape with an open side surface. Sound-absorbing sponge is filled in the box shape formed by the connecting frame and the steel plate. The sound-absorbing sponge is made of glass fiber material. A sound-absorbing layer is arranged on the other side of the sound-absorbing sponge. The sound-absorbing layer is fixedly connected to the surface of the connecting frame. A sound-absorbing perforated plate is arranged on the other side of the sound-absorbing layer. The sound-absorbing perforated plate is fixedly installed on the surface of the connecting frame. The sound-absorbing perforated plate, the sound-absorbing layer and the sound-absorbing sponge form a three-layer sound-absorbing structure from the outside to the inside on the side surface of the connecting frame.

[0013] With the above technical solution, the three-layer sound-absorbing structure can effectively absorb noise.

[0014] Preferably, the second connecting member and the third connecting member are of the same multi-layer composite sound-absorbing structure.

[0015] With the above technical solution, the multi-layer composite sound-absorbing structure can fully absorb noise.

[0016] Preferably, reinforcing bars are fixedly installed on the surfaces of the front plate mechanism and the rear plate mechanism respectively. The cross-section of the reinforcing bar is in a triangular structure.

[0017] With the above technical solution, the reinforcing bars can increase the connection strength of the front plate mechanism and the rear plate mechanism.

[0018] Compared with the prior art, the beneficial effects of the present utility model are: the fan sound absorption and noise reduction device:

[0019] 1. The device is formed by connecting a first connecting piece, a second connecting piece, and a third connecting piece. The first connecting piece, the second connecting piece, and the third connecting piece are all multi-layer composite sound-absorbing structures, which are sequentially provided with a sound-absorbing perforated plate, a sound-absorbing layer, and a sound-absorbing sponge to form a multi-layer sound-absorbing structure. By using the multi-layer sound-absorbing structure, the noise generated during the operation of the fan is effectively eliminated to achieve noise reduction.

[0020] 2. The device is provided with a front plate mechanism and a rear plate mechanism to form a square hollow, and a third connecting piece with a length shorter than the hollow is set to form the top and bottom, so as to form a square air outlet at the top and bottom. While the device adsorbs noise, the air flow from the air outlet will not affect the operation of the fan.

[0021] 3. The device is supported by a support frame and support legs at the bottom to ensure the stability of the device. The support frame is a hollow structure, and the support legs are T-shaped, which can reduce the overall weight of the device while ensuring the support strength. In addition, triangular reinforcing bars are respectively arranged on the surfaces of the assembled front plate mechanism and rear plate mechanism to increase the connection strength. Description of the Drawings

[0022] Figure 1 is a front view structural schematic diagram of the present utility model;

[0023] Figure 2 is a rear view structural schematic diagram of the present utility model;

[0024] Figure 3 is a bottom view structural schematic diagram of the present utility model;

[0025] Figure 4 is a connection structural schematic diagram of the first connecting piece and the second connecting piece of the present utility model;

[0026] Figure 5 is a layered structural schematic diagram of the first connecting piece of the present utility model;

[0027] Figure 6 is a sectional structural schematic diagram of the first connecting piece of the present utility model.

[0028] In the figure: 1. First connecting piece; 2. Second connecting piece; 3. Third connecting piece; 4. Air inlet; 5. Support frame; 6. Support leg; 7. Connection frame; 8. Steel plate; 9. Sound-absorbing perforated plate; 10. Sound-absorbing layer; 11. Sound-absorbing sponge; 12. Reinforcing bar. Detailed Description of the Invention

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figures 1 - 6 , the present utility model provides a technical solution: a fan sound insulation and noise reduction device, including a first connecting member 1, a second connecting member 2, a third connecting member 3, an air inlet 4, a support frame 5, support legs 6, a connecting frame 7, a steel plate 8, a sound absorption hole plate 9, a sound absorption layer 10, a sound absorption sponge 11, and a reinforcing rod 12.

[0031] The first connecting member 1 is of a rectangular structure. On one side surface of the first connecting member 1, there is a second connecting member 2. The second connecting member 2 is the same size as the first connecting member 1, and the air inlet 4 is provided through the surface of the second connecting member 2. The air inlet 4 is a square hollow steel frame structure. On the other side surface of the second connecting member 2, there is another first connecting member 1. The two first connecting members 1 are fixedly connected to the two side surfaces of the second connecting member 2 respectively. The two first connecting members 1 and the second connecting member 2 form the front plate mechanism of the sound insulation device. On one side of the front plate mechanism, there is a rear plate mechanism. The rear plate mechanism includes three first connecting members 1. The side surfaces of the three first connecting members 1 are sequentially connected. The front plate mechanism and the rear plate mechanism are arranged in parallel. The front plate mechanism and the rear plate mechanism are connected by another first connecting member 1. The front plate mechanism and the rear plate mechanism form a square hollow mechanism. The inner surface of the square hollow mechanism is connected with a third connecting member 3. The length of the third connecting member 3 is shorter than that of the square hollow mechanism. There are two third connecting members 3 arranged parallel up and down. The square hollow mechanism and the two third connecting members 3 form the main body of the sound insulation device. The lower surface of the square hollow mechanism is fixedly connected with a support frame 5. The support frame 5 is a square structure welded by steel bars. The lower surface of the support frame 5 is fixedly connected with support legs 6. The support legs 6 are of an inverted T-shaped structure, and the support legs 6 are symmetrically arranged on the lower surface of the support frame 5. The reinforcing rods 12 are fixedly installed on the surfaces of the front plate mechanism and the rear plate mechanism respectively. The cross section of the reinforcing rod 12 is of a triangular structure;

[0032] Such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown in the figure, when the device is installed, a rectangular support frame 5 made of welded steel bars is used, and support legs 6 are welded to the lower surface of the support frame 5. The support frame 5 and the support legs 6 are used as the support of the device. The two sides of the second connector 2 are respectively connected to the first connector 1 to form a front plate mechanism. Three first connectors 1 are connected to form a rear plate mechanism. The front plate mechanism and the rear plate mechanism are connected by another first connector 1, and the third connector 3 is used as the top and the bottom, so that the first connector 1, the second connector 2 and the third connector 3 form a box structure with square air vents provided on the upper and lower surfaces respectively. The formed box structure is welded to the support frame 5, and the air inlet 4 on the surface of the second connector 2 is connected to the air outlet of the fan by a pipeline, and the assembly connection process of the device can be completed. At this time, the square air vent at the bottom is set above the ground under the support of the support legs 6.

[0033] The first connector 1 is a multi-layer composite sound-absorbing structure. The multi-layer composite sound-absorbing structure is provided with a sound-absorbing hole plate 9 as a sound-absorbing component to realize the process of sound absorption and noise reduction of noise. The multi-layer composite sound-absorbing structure includes a connecting frame 7. The connecting frame 7 is square and hollow. One side surface of the connecting frame 7 is fixedly installed with a steel plate 8. The connecting frame 7 and the steel plate 8 form a box shape with an open side surface. The box shape formed by the connecting frame 7 and the steel plate 8 is filled with sound-absorbing sponge 11. The sound-absorbing sponge 11 is made of glass fiber material. On the other side of the sound-absorbing sponge 11, there is a sound-absorbing layer 10. The sound-absorbing layer 10 is fixedly connected to the surface of the connecting frame 7. On the other side of the sound-absorbing layer 10, there is a sound-absorbing hole plate 9. The sound-absorbing hole plate 9 is fixedly installed on the surface of the connecting frame 7. The sound-absorbing hole plate 9, the sound-absorbing layer 10 and the sound-absorbing sponge 11 form a three-layer sound-absorbing structure from the outside to the inside on the side surface of the connecting frame 7. The second connector 2 and the third connector 3 are the same multi-layer composite sound-absorbing structure;

[0034] As Figure 4 , Figure 5 and Figure 6 shown in the figure, during the operation of the fan, the air flow enters the device through the air inlet 4. The air flow moves from the air inlet 4 to the surface of the rear plate mechanism and contacts the sound-absorbing hole plate 9. The sound-absorbing hole plate 9 absorbs the noise once. The air flow continues to move, passes through the sound-absorbing layer 10 and the sound-absorbing sponge 11, and passes through the three-layer sound-absorbing structure to fully absorb the noise, avoiding the fan noise from affecting the surrounding residents. And the air flow in the device is discharged through the square air vents at the top and the bottom, avoiding the influence of blocked air flow on the operation of the fan.

[0035] Working principle: When using this kind of fan noise reduction equipment, a box-shaped noise reduction equipment can be formed by using the front plate mechanism, the rear plate mechanism and the No. 3 connecting piece 3. The air inlet 4 is connected to the air outlet of the fan. When the fan is running, the air flow passes through the three-layer noise reduction structure composed of the sound absorption hole plate 9, the sound absorption layer 10 and the sound absorption sponge 11 to fully absorb the noise, and the air flow is discharged through the square air outlet of the equipment, avoiding the influence of unsmooth air flow on the operation of the fan and increasing the overall practicability.

[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan noise reduction device, comprising a first connecting member (1), characterized in that: The first connecting piece (1) is of a rectangular structure. A second connecting piece (2) is provided on one side surface of the first connecting piece (1). The second connecting piece (2) is the same size as the first connecting piece (1), and an air inlet (4) is provided through the surface of the second connecting piece (2). The air inlet (4) is a square hollow steel frame structure. Another first connecting piece (1) is provided on the other side surface of the second connecting piece (2). The two first connecting pieces (1) are respectively fixedly connected to the two side surfaces of the second connecting piece (2). The two first connecting pieces (1) and the second connecting piece (2) form the front plate mechanism of the sound-absorbing device. A rear plate mechanism is provided on one side of the front plate mechanism.

2. The noise reduction device for a fan according to claim 1, wherein: The rear plate mechanism includes three first connecting pieces (1). The side surfaces of the three first connecting pieces (1) are sequentially connected. The front plate mechanism and the rear plate mechanism are arranged in parallel. The front plate mechanism and the rear plate mechanism are connected by additional first connecting pieces (1). The front plate mechanism and the rear plate mechanism form a square hollow mechanism. A third connecting piece (3) is connected to the inner surface of the square hollow mechanism. The length of the third connecting piece (3) is shorter than that of the square hollow mechanism. Two third connecting pieces (3) are arranged parallel to each other up and down. The square hollow mechanism and the two third connecting pieces (3) form the main body of the sound-absorbing device.

3. The aero - acoustic noise reduction device according to claim 2, characterized in that: A support frame (5) is fixedly connected to the lower surface of the square hollow mechanism. The support frame (5) is a square-eye structure welded by steel bars. A support leg (6) is fixedly connected to the lower surface of the support frame (5). The support leg (6) is of an inverted T-shaped structure, and the support legs (6) are symmetrically arranged on the lower surface of the support frame (5).

4. A fan noise reduction device according to claim 1, characterized in that: The first connecting piece (1) is a multi-layer composite sound-absorbing structure. The multi-layer composite sound-absorbing structure is provided with a sound-absorbing hole plate (9) as a sound-absorbing component to realize the sound-absorbing and noise-reducing process of noise.

5. The noise reduction device for a fan according to claim 4, characterized in that: The multi-layer composite sound-absorbing structure includes a connecting frame (7). The connecting frame (7) is square hollow. A steel plate (8) is fixedly installed on one side surface of the connecting frame (7). The connecting frame (7) and the steel plate (8) form a box shape with an open side surface. The box shape formed by the connecting frame (7) and the steel plate (8) is filled with sound-absorbing sponge (11). The sound-absorbing sponge (11) is made of glass fiber material. A sound-absorbing layer (10) is provided on the other side of the sound-absorbing sponge (11). The sound-absorbing layer (10) is fixedly connected to the surface of the connecting frame (7). A sound-absorbing hole plate (9) is provided on the other side of the sound-absorbing layer (10). The sound-absorbing hole plate (9) is fixedly installed on the surface of the connecting frame (7). The sound-absorbing hole plate (9), the sound-absorbing layer (10) and the sound-absorbing sponge (11) form a three-layer sound-absorbing structure from the outside to the inside on the side surface of the connecting frame (7).

6. The noise reduction device for a fan according to claim 1, characterized in that: The second connecting piece (2) and the third connecting piece (3) are of the same multi-layer composite sound-absorbing structure.

7. The noise reduction device for a fan according to claim 1, characterized in that: Reinforcing bars (12) are respectively fixedly installed on the surfaces of the front plate mechanism and the rear plate mechanism. The cross section of the reinforcing bar (12) is of a triangular structure.

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