CN216895055U

CN216895055U - Silencing type fan air inlet box

Info

Publication number: CN216895055U
Application number: CN202123137999.9U
Authority: CN
Inventors: 李明; 陈剑; 华丽萍
Original assignee: Atea (shanghai) Environmental Ltd
Current assignee: Atea (shanghai) Environmental Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-07-05
Anticipated expiration: 2031-12-14

Abstract

The application discloses amortization type fan air-in box is applicable to the flow direction that changes the air and the noise when reducing the air and flowing, its characterized in that, amortization type fan air-in box includes a box and a sound absorbing member. The box body forms a cavity, the top of the box body is provided with an air inlet, an air outlet is formed in the position, close to the bottom, of the side face of the box body, and the cavity is communicated with the air inlet and the air outlet simultaneously, so that when the air flows through the box body, the air flows in the direction perpendicular to the air flowing in the air outlet. The sound-absorbing member is disposed in the cavity, and the sound-absorbing member is close to the air inlet, so that when the air inlet end of the blower is communicated with the air outlet, noise generated by the air entering the case is absorbed by the sound-absorbing member, and the air changes direction in the case.

Description

Silencing type fan air inlet box

Technical Field

The utility model relates to the technical field of fans, in particular to a silencing type fan air inlet box.

Background

A silencer is a device that prevents sound from propagating while allowing airflow to pass through, and is capable of eliminating aerodynamic noise. The silencer is often installed in the intake or exhaust system of the airflow path of the aerodynamic device to reduce noise in the system.

The air blower with higher noise needs to suck air from a high position in the vertical direction, the effect is generally realized by a mode of combining the silencer and the air inlet box, the silencer is arranged above the air inlet box, namely, the air is firstly reduced in noise through the silencer, then the air flowing vertically is changed into air flowing horizontally through the air inlet box, and finally the air enters the air blower. And the two devices of the silencer and the air inlet box occupy a large space and have high design cost.

In addition, the overlapping of the silencer and the air inlet box can cause that the distance of air entering the blower is longer, the longer channel can increase the resistance of the air flow in the flowing process, the resistance of the air flow in the flowing process is larger, the rotating load of a motor of the blower is increased, and the flow supplied by the blower is too low.

SUMMERY OF THE UTILITY MODEL

An advantage of the present invention is to provide a muffling type blower air inlet box in which a sound-absorbing member is provided inside a box body, so that noise generated by air entering the box body can be absorbed even when the air is reversed through the box body, and a muffler and the air inlet box are combined into one, thereby saving space.

Another advantage of the present invention is to provide a muffling type air inlet box of a blower, in which sound-absorbing members are made of sound-absorbing cotton, which can absorb noise waves well.

Another advantage of the present invention is to provide a muffling type blower air inlet box, wherein the inner diameter of the box body is gradually reduced, so that when noise waves enter the interior of the box body, the noise waves can be prevented from popping out, thereby reducing noise.

Another advantage of the present invention is to provide a muffling type air inlet box of a blower, in which a reinforcing member can reinforce the strength of the box body, reduce the vibration of the box body, and reduce the generation of noise.

To achieve at least one of the above advantages, the present invention provides a muffling type air blower air inlet box adapted to change a flow direction of air and reduce noise when the air flows, the muffling type air blower air inlet box comprising:

the box body is provided with a cavity, the top of the box body is provided with an air inlet, the side surface of the box body close to the bottom is provided with an air outlet, and the cavity is communicated with the air inlet and the air outlet simultaneously, so that when the air flows through the box body, the flow direction of the air at the air inlet is vertical to the flow direction of the air at the air outlet; and

a sound absorbing member disposed in the cavity and adjacent to the air inlet such that when an air inlet end of the blower communicates with the air outlet, noise generated by the air entering the housing is absorbed by the sound absorbing member and the air changes direction in the housing.

According to an embodiment of the present invention, the sound-absorbing member includes at least one mounting piece provided to the cavity in the direction in which the air flows, and at least one sound-absorbing piece provided to the mounting piece.

According to an embodiment of the present invention, the sound absorbing member is implemented as sound absorbing cotton, and the mounting member is implemented as two mounting nets between which the sound absorbing cotton is sandwiched.

According to an embodiment of the utility model, the muffling type fan air inlet box further comprises a connecting part, and the connecting part is arranged to flexibly communicate the box body and the blower.

According to an embodiment of the present invention, the connecting member includes a connecting member and a flexible tube, the connecting member is disposed on the box body, the connecting member covers an outer edge of the air outlet, one end of the flexible tube is communicated with the connecting member, and the other end of the flexible tube is communicated with the blower.

According to an embodiment of the present invention, the connection part further includes a connection flange, and the connection flange is disposed at an end of the connection part away from the box body, so that the connection flange is used for fixing the connection part and the flexible pipe when the flexible pipe is sleeved on the connection part.

According to an embodiment of the present invention, an inner diameter of the box body decreases gradually from the air inlet to the air outlet.

According to an embodiment of the present invention, the muffling type fan air inlet box further includes a reinforcing member, and the reinforcing member includes a reinforcing ring, and the reinforcing ring is disposed on the box body and close to the air inlet.

According to an embodiment of the present invention, the air inlet is rectangular;

the reinforcing member further comprises at least two reinforcing angle steels, and the reinforcing angle steels are arranged on the outer wall of the box body.

According to an embodiment of the utility model, one end of the box body close to the air outlet is arc-shaped.

Drawings

Fig. 1 shows a schematic structural diagram of an air inlet box of a silencing fan according to the utility model.

Fig. 2 shows a side view of the muffling fan air inlet box of the present invention.

Fig. 3 shows a cross-sectional view of the muffling fan air inlet box of the present invention.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments described below are by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 to 3, a muffling type blower air inlet box according to a preferred embodiment of the present invention will be described in detail below. The muffling type fan air inlet box can change the flow direction of air entering the air blower and reduce the noise of the air entering the air blower. The muffling type fan air inlet box comprises a box body 10 and a sound absorption member 20.

The box body 10 forms a cavity 101, an air inlet 102 is arranged at the top of the box body 10, and an air outlet 103 is arranged at the side of the box body 10 close to the bottom. The direction of the air flowing in the inlet 102 is perpendicular to the direction of the air flowing in the outlet 103. The cavity 101 is communicated with the air inlet 102 and the air outlet 103 at the same time.

The sound-absorbing member 20 is disposed in the cavity 101 and near the air inlet 102, and reduces noise of air entering the cavity 101. When the air outlet 103 is communicated with the air inlet end of the blower, air enters the cavity 101 through the air inlet 102, noise is reduced by the sound-absorbing member 20, and the air is guided into the blower after the direction of the air outlet 103 is changed, so that the noise of the blower during operation is reduced. In addition, because the sound-absorbing member 20 is disposed in the cavity 101, the air can be turned and silenced only by the air inlet box without additionally connecting a silencer, so that the resistance of the air in the flowing process can be reduced, the space occupied by the blower can be reduced, and the utilization rate of the space can be improved.

The sound-absorbing member 20 includes at least one mounting member 21 and at least one sound-absorbing member 22. The mounting member 21 is provided in the cavity 101 in the direction in which the air flows, and the sound absorbing member 22 is provided in the mounting member 21. Since the air is sucked into the cabinet 10, the air may cause the cabinet 10 to vibrate to form sound waves, and when the sound waves are transmitted to the sound-absorbing member 22, the sound-absorbing member 22 may convert the sound waves into heat energy, thereby eliminating noise.

The sound-absorbing member 22 is implemented as sound-deadening cotton, and the mounting member 21 is correspondingly implemented as a mounting net. The noise reduction cotton quilt is arranged on the installation net to realize stable fixation of the noise reduction cotton. Specifically, the number of the installation nets is two, and the installation nets clamp the silencing cotton to fix the silencing cotton. When the sound waves enter the silencing cotton, the sound waves are reflected, overlapped and collided by countless fibers, and finally energy in the sound waves is converted into heat energy, so that the silencing effect is achieved, and the purpose of eliminating noise is achieved. The material of amortization cotton is polyester fiber.

The box 10 further includes a plurality of fixing members. The fixing pieces are divided into four rows, the four rows of fixing pieces are parallel to the moving direction of the air in the cavity 101, the four rows of fixing pieces are grouped into a group in pairs on the inner walls of two opposite sides of the cavity 101, clamping gaps are formed between the fixing pieces in the same group, and the clamping gaps can just clamp the mounting net and the silencing cotton. By fitting the holding gap, the sound-absorbing member 20 can be easily mounted. For example, the fixing member is implemented as an L-shaped plate, one end of the L-shaped plate is fixed on the inner wall of the box body 10, and the other end of the L-shaped plate protrudes out of the inner wall of the box body 10, so that one side of the mounting net and the silencing cotton can be clamped between two L-shaped plates, and two sides of the mounting net and the silencing cotton can be clamped by four L-shaped plates.

The sound-absorbing member 22 is implemented in two. The two sound absorbing members 22 are spaced apart from each other in the cavity 101. When the sound wave enters the cavity 101, the sound wave is absorbed by the two sound-absorbing members 22. Preferably, the number of the sound absorbing members 22 may be four, and four sound absorbing members 22 are spaced apart from each other in the cavity 101, and the sound absorbing members 22 can better absorb the sound waves. It should be noted that the number of the sound absorbing members 22 is not more than four, and the sound absorbing members 22 will increase the resistance of the air during the flowing process, and will not increase the resistance of the air during the flowing process too much on the premise of eliminating the noise.

The muffling type fan air inlet box further comprises a connecting part 30. The connection part 30 is provided to flexibly communicate the case 10 and the blower. Because the blower is flexibly connected with the box body 10, the vibration of the blower in operation is not transmitted to the box body 10, so that the vibration of the box body 10 can be reduced, and the noise is further reduced.

The connecting member 30 includes a connecting member 31 and a flexible tube. The connecting member 31 is disposed on a side surface of the box 10 and covers an inner edge of the air outlet 103. One end of the flexible tube is fixed to the connector 32, and the other end of the flexible tube communicates with the blower. When the blower works, the air enters the cavity 101 from the air inlet 102, then enters the flexible pipe from the air outlet 103, and finally enters the blower. Because the box 10 with the air-blower passes through the flexible tube intercommunication, can guarantee the air admission inside the air-blower, can prevent again the air-blower drives the box 10 vibrations avoid the production of noise.

The attachment member 30 also includes an attachment flange 32. The connecting flange 32 is fixed to an end of the connecting member 31 remote from the tank 10. The connecting flange 32 facilitates the connection of the flexible pipe to the connecting member 31, thereby achieving the purpose of facilitating the connection.

The inner diameter of the box 10 is gradually reduced, the side wall of the box 10 is inclined, and the inner diameter of the end of the box 10 close to the air outlet 103 is smaller than the inner diameter of the end of the box 10 close to the air inlet 102. Because the inner diameter of the box 10 is gradually reduced, when the sound wave enters the cavity 101, the sound wave rebounds on the inner wall of the cavity 101 and gradually goes deep into the cavity 101, so that the sound wave is not discharged from the air inlet 102, and the purpose of reducing noise is achieved.

The muffling type fan air inlet box further comprises a reinforcing member 40. The reinforcing member 40 includes a reinforcing ring 41, and the reinforcing ring 41 is disposed on the casing 10 and close to the inlet 102. The reinforcing ring 41 can reinforce the strength of the case 10 and prevent the case 10 from vibrating. When the air enters the cavity 101 through the air inlet 102, the air is slowed down to drive the box 10 to vibrate under the action of the reinforcing ring 41, so as to reduce the noise.

The intake vent 102 is rectangular. The reinforcing member 40 further includes at least two reinforcing angles. The reinforcing angle steel is in a right-angle shape and is arranged on the outer wall of the box body 10 and used for reinforcing the strength of the box body 10, so that the vibration of the box body 10 can be further reduced by air driving.

One end, close to the air outlet 103, of the box body 10 is arc-shaped, the air outlet 103 is circular, and the circle center of the air outlet 103 and the circle center of the arc of the box body 10 are located on the same axis. The air will swirl along the shape of the arc of the housing 10 and will be discharged through the outlet 103 and into the blower. When air flows inside a conventional ninety-degree bend, the air comes into contact with the inside wall of the bend, causing a significant pressure loss. In the present application, the air may rotate at the arc of the box 10, and the air is discharged through the air outlet 103 when the air rotates to the center of the arc of the box 10, so that the pressure loss of the air in the flowing process can be reduced.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are given by way of example only and are not limiting of the utility model. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments, and any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. Amortization type fan air-in case is applicable to the noise when changing the flow direction of air and reducing the air flow, its characterized in that, amortization type fan air-in case includes:

a sound absorbing member disposed in the cavity and adjacent to the air inlet such that when an air inlet end of the blower communicates with the air outlet, noise generated by the air entering the housing is absorbed by the sound absorbing member and the air changes direction within the housing.

2. The muffling fan air inlet box of claim 1, wherein the sound absorbing member comprises at least one mounting element and at least one sound absorbing member, the mounting element being disposed in the cavity in the direction of the air flow, the sound absorbing member being disposed in the mounting element.

3. The muffling fan air intake box of claim 2, wherein the sound absorbing member is implemented as sound absorbing cotton, and the mounting member is implemented as two mounting meshes, the sound absorbing cotton being sandwiched between the two mounting meshes.

4. The muffling fan air inlet box of claim 1, further comprising a connecting member configured to flexibly connect the box body to the blower.

5. The muffling type fan air inlet box according to claim 4, wherein the connecting member comprises a connecting member and a flexible tube, the connecting member is disposed on the box body and covers an outer edge of the air outlet, one end of the flexible tube is communicated with the connecting member, and the other end of the flexible tube is communicated with the blower.

6. The muffling fan air inlet box of claim 5, wherein the attachment member further comprises a coupling flange disposed at an end of the attachment member remote from the box body, such that the coupling flange is configured to secure the attachment member and the flexible tube when the flexible tube is received within the attachment member.

7. The muffling fan air intake box of claim 1, wherein the box has an inner diameter that gradually decreases from the air inlet to the air outlet.

8. The muffling fan air inlet box of claim 1, further comprising a reinforcing member, wherein the reinforcing member comprises a reinforcing ring, and wherein the reinforcing ring is disposed within the box and adjacent to the air inlet.

9. The muffling fan air inlet box according to claim 8, wherein the air inlet is rectangular;

10. The muffling type fan air inlet box according to claim 1, wherein one end of the box body, which is close to the air outlet, is arc-shaped.