CN216894166U - Noise reduction shutter and noise reduction system - Google Patents

Abstract

The application discloses shutter and noise reduction system of making an uproar falls belongs to shutter technical field. The noise reduction louver comprises a frame body, blades and a sound absorption body, wherein the frame body is provided with an air outlet, the frame body is provided with an air inlet side and an air outlet side, and the air inlet side is communicated with the air outlet side through the air outlet; the blades are arranged on the frame body and are rotationally connected with the frame body so as to open or close the air outlet; inhale the sound body and locate the blade, and inhale the sound body and be connected with the blade, shelter from under the condition of at least partial air outlet at the blade, inhale the sound body and face the air inlet side. The noise reduction system comprises the noise reduction shutter and the fan, and the fan is arranged on the air inlet side. So set up, add on the blade of shutter and inhale the sound body, the distinguished and admirable time through the air outlet, can with inhale the sound body direct contact, so the air-out noise is inhaled the sound body and is effectively absorbed to reach the purpose of making an uproar. Moreover, the sound absorption body is simple in structure and low in cost, noise reduction operation is not required to be carried out on the fan, independent silencing equipment is not required to be added, and equipment cost is reduced.

Description

Noise reduction shutter and noise reduction system

Technical Field

The application belongs to the technical field of shutters, and particularly relates to a noise reduction shutter and a noise reduction system.

Background

When the louver is applied to equipment such as an air cooler and an air conditioner, the air inlet side of the louver is refrigerated by the fan, and cold air is blown out of the louver. However, the noise of the fan is generally high, and some fans reduce the noise by reducing the rotating speed of the fan in the working state, but also reduce the heat exchange efficiency, so that in order to ensure the heat exchange efficiency, the diameter of the fan blade is increased, the whole size of the equipment is increased, and the cost is increased; some can set up solitary silencing device in the air-out side for noise reduction, but also can increase area, increase equipment cost.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application aims to provide a noise reduction blind and a noise reduction system, which can solve the problems that the size and the occupied area of equipment are increased and the cost is increased due to noise reduction measures adopted by the equipment with the blind in the related art.

In a first aspect, an embodiment of the present application provides a noise reduction louver, including frame, blade and sound absorbing body, wherein:

the frame body is provided with an air outlet, the frame body is provided with an air inlet side and an air outlet side, and the air inlet side is communicated with the air outlet side through the air outlet;

the blades are arranged on the frame body and are rotatably connected with the frame body so as to open or close the air outlet;

inhale the sound body and locate the blade, just inhale the sound body with the blade is connected the blade shelters from at least part under the condition of air outlet, inhale the sound body towards the air inlet side.

In a second aspect, an embodiment of the present application provides a noise reduction system, including the above-mentioned shutter and the fan of making an uproar, the fan is located the air inlet side.

In this application embodiment, add on the blade of shutter and inhale the sound body, the wind current is when the air outlet, owing to inhale the sound body and face the air inlet side, the wind current can with inhale sound body direct contact, so the air-out noise also can be inhaled sound body effective absorption by inhaling to reach the mesh of making an uproar. So set up, inhale sound body simple structure, with low costs, and need not to do again to fan itself and fall the operation of making an uproar, also need not to increase solitary silencing equipment, reduction equipment cost.

Drawings

FIG. 1 is a schematic view of a noise reduction blind in an open position according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a noise reduction blind in a closed position as disclosed in an embodiment of the present application;

FIG. 3 is a schematic view of a noise reduction louver in a partially open position according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a blade and a sound-absorbing body according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of a blade and a sound-absorbing body according to another embodiment of the present disclosure;

FIG. 6 is a cross-sectional view of a blade and a sound absorbing body according to another embodiment of the present disclosure;

FIG. 7 is a schematic view of an opening disclosed in another embodiment of the present application;

FIG. 8 is a schematic diagram of a sound absorbing wedge disclosed in an embodiment of the present application;

fig. 9 is a schematic connection diagram of a pin and a frame body disclosed in the embodiment of the present application.

Description of the reference numerals:

100-petiole;

200-blade; 210-a first shell portion; 220-a second shell portion; 230-opening a hole;

300-sound absorbing body; 310-a base; 320-tip;

400-air outlet;

500-sound absorbing membrane;

600-a pin shaft;

700-shaft sleeve;

800-gasket.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The noise reduction blind and the noise reduction system provided by the embodiments of the present application are described in detail with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 1 to 9, the noise reduction blind disclosed in the present application includes a frame body, blades 200, and a sound-absorbing body 300. Wherein, the framework is equipped with air outlet 400, and blade 200 installs in the framework, and blade 200 and framework rotatable coupling, and in the relative framework rotation process of blade 200, the degree of sheltering from to air outlet 400 of blade 200 changes to make the aperture of air outlet 400 change, certainly also can realize that air outlet 400 opens or closes.

In this embodiment, the number of the blades 200 is plural, and each blade is rotatably connected to the frame. Specifically, as shown in fig. 1, the air outlet 400 is in an open state, at this time, the distance between two adjacent blades 200 is large, and the blades 200 do not shield the air outlet 400; as shown in fig. 3, the air outlet 400 is in a partially opened state, at this time, the distance between two adjacent blades 200 is reduced, and the blades 200 shield part of the air outlet 400; as shown in fig. 2, the air outlet 400 is in a closed state, at this time, any two adjacent blades 200 are in contact, and each blade 200 is matched to shield the whole air outlet 400.

The blade 200 may be directly rotatably connected to the frame, or the blade 200 may be indirectly rotatable with respect to the frame via other connectors. Specifically, the connecting member may be a pin 600, the pin 600 may be rotatably disposed on the frame, the blade 200 is connected to the pin 600, and the blade 200 rotates with respect to the frame along with the pin 600.

The frame body has an air inlet side and an air outlet side, the air inlet side is communicated with the air outlet side through an air outlet 400, the direction of the arrow shown in fig. 1-3 is the direction of air flow, and the air flow flows from the air inlet side to the air outlet side through the air outlet 400. The sound-absorbing body 300 is provided on the blade 200, and the sound-absorbing body 300 is connected with the blade 200, and the sound-absorbing body 300 faces the intake side in the case where the blade 200 blocks at least a part of the outlet 400.

That is to say, no matter under the condition that blade 200 shelters from part air outlet 400, or under the condition that blade 200 shelters from whole air outlet 400, inhale the sound body 300 all towards the intake side, because inhale the sound body 300 and need come into contact with the wind current with the help of the rotation of blade 200, only under the condition that blade 200 sheltered from at least part air outlet 400, inhale the sound body 300 and just contact with the wind current, and then the noise absorption.

The sound absorbing body 300 is made of a sound absorbing material, the sound absorbing body 300 may be made of sound absorbing cotton, and the sound absorbing body 300 may be made of other materials.

So set up, add on the blade 200 of shutter and inhale the sound body 300, the wind current is when through air outlet 400, owing to inhale the sound body 300 towards the air inlet side, the wind current can with inhale the sound body 300 direct contact, so the air-out noise also can be inhaled the sound body 300 and effectively absorbed to reach the purpose of making an uproar. Moreover, the sound absorption body 300 is simple in structure and low in cost, noise reduction operation of the fan is not needed, independent silencing equipment does not need to be added, and equipment cost is reduced.

In an alternative embodiment, as shown in fig. 1 to 5, the noise reduction louver further includes a blade handle 100, a first end of the blade handle 100 is rotatably connected to the frame, a second end of the blade handle 100 is connected to the blade 200, and the blade 200 rotates with the blade handle 100 relative to the frame to open or close the air outlet 400. In the present embodiment, the blade handle 100 is rotatably connected to the frame body through a pin 600, that is, the pin 600 is rotatably disposed on the frame body, a first end of the blade handle 100 is connected to the pin 600, and a second end of the blade handle 100 is connected to the blade 200.

The second end of the petiole 100 and the blade 200 can be connected in a fixed connection mode such as bonding, or can be detachably connected in a clamping mode, so that the petiole 100 and the blade 200 can be relatively fixed; similarly, the first end of the petiole 100 may be fixedly connected to the pin 600 by bonding or other methods, or may be connected to the first end of the petiole 100 by other methods, so as to relatively fix the petiole 100 to the pin 600.

Specifically, the frame body is generally a rectangular frame, two ends of the rectangular frame may be provided with a cylindrical groove along the installation direction of the pin 600, two ends of the pin 600 respectively extend into the cylindrical grooves, and the pin 600 is in clearance fit with the cylindrical grooves, so that the pin 600 can rotate relative to the frame body, and further, the petioles 100 and the blades 200 are driven to rotate relative to the frame body; the second end of the blade handle 100 may be provided with a through hole, and the blade handle 100 is sleeved on the periphery of the pin shaft 600 by means of the through hole, so that the blade handle 100 and the pin shaft 600 are relatively fixed.

With this arrangement, the blade 200 is supported by the blade shank 100, and the blade shank 100 serves as an intermediate connector, which facilitates connection of the blade 200 to the frame.

In an alternative embodiment, the sound-absorbing body 300 is disposed on the surface of the blade 200, and the sound-absorbing body 300 is attached to the surface of the blade 200. Specifically, as shown in fig. 4, the sound absorbing body 300 may be in a sheet shape and attached to the outer surface of the blade 200, and the sound absorbing body 300 and the blade 200 may be bonded by an adhesive or may be connected by other means; as shown in fig. 5 to 6, in the case that the blade 200 is in a shell shape, the blade 200 may have a cavity, and the sound absorbing body 300 may be disposed in the cavity and contact with an inner surface of the blade 200, so that the sound absorbing body 300 is attached to the blade 200.

So set up, because inhale the sound body 300 and laminate mutually with blade 200, so inhale the connection area between sound body 300 and the blade 200 great, guarantee to inhale the connection steadiness of sound body 300.

Alternatively, the sound-absorbing body 300 is a sound-absorbing wedge, and the sound-absorbing wedge is a sound-absorbing body 300 with high sound-absorbing effect. As shown in fig. 8, the sound-absorbing wedge includes a base 310 and a tip 320, the tip 320 is disposed on a surface of the base 310, the tip 320 is tapered, the base 310 and the tip 320 are integrated, and at least one of the base 310 and the tip 320 is connected to the blade 200. That is, base 310 may be connected to blade 200, tip 320 may be connected to blade 200, or both base 310 and tip 320 may be connected to blade 200.

Specifically, as shown in fig. 4, in the case where the sound-absorbing body 300 is attached to the outer surface of the blade 200, the outer surface of the base portion 310 includes a first surface attached to the blade 200 and a second surface provided with the plurality of tip portions 320, and thus, in this case, the base portion 310 is connected to the blade 200. As shown in fig. 5, in the case where the blade 200 is in a shell shape and the sound absorbing body 300 is provided inside the blade 200, the tip 320 may extend over the surface of the base 310, and the tip 320 is in contact with the inner wall surface of the blade 200, and thus, in this case, the tip 320 is connected to the blade 200; of course, the tip 320 may be distributed on a part of the surface of the base 310 so that a part of the surface of the base 310 can also contact the inner wall surface of the blade 200, in which case, both the tip 320 and the base 310 contact the inner wall surface of the blade 200.

So set up, through inhaling sharp portion 320 of sound wedge, can make the air and inhale the acoustic impedance gradual transition between the sound body 300 to obtain good impedance matching and sound absorption effect.

In the present embodiment, at least one of the base 310 and the tip 320 is provided with a sound absorption hole. Specifically, the base portion 310 may be provided with a suction hole, the tip portion 320 may be provided with a sound absorption hole, or both the base portion 310 and the tip portion 320 may be provided with sound absorption holes. In practical application, the sound-absorbing wedges can be made of porous or fibrous materials directly, and of course, other different materials can be adopted according to different working conditions.

Thus, the sound waves can enter the sound absorbing body 300 along the gap of the sound absorbing hole, and generate damping, reflection and friction effects with the sound absorbing body 300, so that the sound energy is converted into heat energy to be consumed, and the purpose of sound absorption is achieved.

In an alternative embodiment, as shown in fig. 5 and 6, the vane 200 has a cavity, the sound-absorbing body 300 is disposed in the cavity, and the vane 200 is provided with a plurality of openings 230, as shown in fig. 7, the openings 230 are communicated with the cavity. In the case where the blade 200 shields at least part of the air outlet 400, the opening hole 230 faces the air intake side. In this embodiment, the sound-absorbing body 300 is in contact with the cavity wall of the cavity.

So set up, under the condition that blade 200 sheltered from at least partial air outlet 400, because trompil 230 faces the air inlet side, so the wind current can be held the intracavity by trompil 230 entering, and final wind current and the body 300 contact of inhaling sound reach the effect of inhaling the sound of the body 300 of inhaling sound.

In this case, the sound absorbing body 300 may be made of sound absorbing cotton. The sound-absorbing cotton is firm, has no special taste, has waterproof and moistureproof effects, has good air permeability, is easy to process, and can manufacture the sound-absorbing body 300 into different shapes according to requirements. In addition, the sound-absorbing cotton can resist various corrosion and has long service life.

Alternatively, as shown in fig. 6, the blade 200 includes a first shell portion 210 and a second shell portion 220, the first shell portion 210 and the second shell portion 220 are detachably connected, and the first shell portion 210 and the second shell portion together form a receiving cavity, at least one of the first shell portion 210 and the second shell portion 220 is connected with a frame body. That is, the first case portion 210 may be connected to a housing, the second case portion 220 may be connected to a housing, or both the first case portion 210 and the second case portion 220 may be connected to a housing. Of course, in a case where both the first and second case parts 210 and 220 are connected with a frame body, both the first and second case parts 210 and 220 are movable with respect to the frame body in order to ensure that the first and second case parts 210 and 220 can be connected and separated.

Specifically, the first shell portion 210 and the second shell portion 220 can be connected by a threaded fastener (e.g., a bolt), the first shell portion 210 and the second shell portion 220 are both provided with through holes, and the threaded fastener sequentially penetrates through the two through holes and is tightened, so that the first shell portion 210 and the second shell portion 220 are connected, and when disassembly is required, the threaded fastener is loosened; the first and second shell portions 210 and 220 can be coupled to each other by a clamping structure, but they can be coupled to each other by other detachable means.

So set up, according to inhaling the in service behavior of sound body 300, can dismantle first casing and second casing, and then change and inhale sound body 300 to guarantee to last good sound effect of inhaling.

In an alternative embodiment, as shown in fig. 6, the noise reduction louver further includes a sound absorption film 500, the sound absorption film 500 is used for closing the opening 230, the sound absorption film 500 is disposed in the cavity, the sound absorption film 500 is located between the sound absorption body 300 and the vane 200, and the sound absorption film 500 is respectively in contact with the cavity wall of the cavity and the sound absorption body 300. Specifically, the sound absorption film 500 is a colorless transparent sound absorption material, the main component of which is polyurethane, and has the functions of absorbing and degrading low-frequency noise, and the sound absorption mechanism is that according to the characteristics that the synthetic material has a large specific surface area and large elasticity, when sound waves go deep into the material along the pores, the sound waves and the material generate damping, reflection and friction effects, and the sound waves are converted into heat energy to be consumed, so that the purpose of sound absorption is achieved.

At the same time when the wind flows into the cavity through the opening 230, a part of foreign matters such as dust in the air may also enter the cavity to contact the sound-absorbing body 300. So set up, through sound absorption membrane 500, can guarantee the sound effect of inhaling, can regard as the dust mask again to block foreign matter such as dust outside sound absorption body 300, change sound absorption membrane 500 when necessary can, need not frequently to change sound absorption body 300, prolong sound absorption body 300's life cycle.

In the technical scheme of this application, blade 200 and sound absorption body 300 all are the arc structure, and under the condition that air outlet 400 is in the closed condition, the arc structure is protruding by the direction of air inlet side to air-out side.

By adopting the arc-shaped structure, the wind resistance can be reduced, and the wind flow can flow along the surface of the arc-shaped structure easily.

In this embodiment, as shown in fig. 9, the noise reduction louver further includes a pin 600 and a shaft sleeve 700, and the frame body is provided with a shaft hole. Wherein, round pin axle 600 runs through the shaft hole, and axle sleeve 700 is located between round pin axle 600 and the framework. Specifically, the shaft sleeve 700 has an inner wall surface and an outer wall surface, the outer wall surface is in close contact with the frame body, the inner wall surface is in rotating fit with the pin 600, that is, the shaft sleeve 700 and the frame body are relatively fixed, and the pin 600 can rotate relative to the shaft sleeve 700. Also, the petiole 100 is directly connected to the pin 600, so that the petiole 100 and the blade 200 rotate with respect to the frame following the pin 600.

The frame body and the pin shaft 600 may be made of metal, and thus, the frame body and the pin shaft 600 are spaced apart by the shaft sleeve 700, thereby preventing the frame body and the pin shaft 600 from being directly contacted to cause serious abrasion.

In this embodiment, the noise reduction louver further includes a washer 800, the washer 800 is sleeved on the outer circumference of the pin 600, and the washer 800 contacts with the shaft sleeve 700 for protecting the shaft sleeve 700.

Based on the shutter of making an uproar falls in this application, this application embodiment still discloses a noise reduction system, and the shutter and the fan of making an uproar fall in the disclosed noise reduction system includes among the above-mentioned embodiment, and the fan setting is in the air inlet side of framework, and the fan is used for producing the wind stream to make the wind stream flow to the air-out side through the air outlet by the air inlet side.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (11)

1. A noise-reducing louver, comprising a frame body, blades (200), and a sound-absorbing body (300), wherein:

the frame body is provided with an air outlet (400), the frame body is provided with an air inlet side and an air outlet side, and the air inlet side is communicated with the air outlet side through the air outlet (400);

the blades (200) are arranged on the frame body, and the blades (200) are rotatably connected with the frame body to open or close the air outlet (400);

inhale the sound body (300) and locate blade (200), just inhale the sound body (300) with blade (200) are connected blade (200) shelter from at least part under the condition of air outlet (400), inhale the sound body (300) towards the air inlet side.

2. A noise-reducing louver according to claim 1, wherein the sound-absorbing member (300) is provided on a surface of the blade (200), and the sound-absorbing member (300) is attached to the surface of the blade (200).

3. A noise reducing shutter according to claim 1, characterised in that the sound absorbing body (300) is a sound absorbing wedge comprising a base part (310) and a tip part (320), the tip part (320) being arranged at a surface of the base part (310), at least one of the base part (310) and the tip part (320) being connected to the blade (200).

4. A noise reducing shutter according to claim 3, characterised in that at least one of the base (310) and the tip (320) is provided with sound absorbing holes.

5. Noise reducing shutter according to claim 1, characterised in that said blade (200) has a cavity in which said sound absorbing body (300) is located, and in that said blade (200) is provided with a plurality of openings (230), said openings (230) being in communication with said cavity, said openings (230) facing towards said air intake side in case said blade (200) obstructs at least part of said air outlet (400).

6. A noise reducing shutter according to claim 5, characterised in that the vane (200) comprises a first shell part (210) and a second shell part (220), the first shell part (210) and the second shell part (220) being detachably connected, and the first shell part (210) and the second shell part (220) together constituting the receptacle, at least one of the first shell part (210) and the second shell part (220) being connected to the frame.

7. A noise-reducing shutter according to claim 5, characterised in that it further comprises a sound-absorbing membrane (500) for closing the apertures (230), the sound-absorbing membrane (500) being provided in the cavity, and the sound-absorbing membrane (500) being located between the sound-absorbing body (300) and the blades (200).

8. A noise-reducing louver according to claim 1, wherein the blades (200) and the sound-absorbing body (300) are of an arc-shaped configuration that protrudes in a direction from the air inlet side to the air outlet side when the air outlet (400) is in the closed state.

9. A noise reducing shutter according to claim 1, further comprising a vane handle (100), a first end of the vane handle (100) being rotatably connected to the frame, a second end of the vane handle (100) being connected to the vane (200), the vane (200) being rotatable with the vane handle (100) relative to the frame to open or close the outlet opening (400).

10. A noise-reducing louver according to claim 1 further comprising a pin (600) and a bushing (700), wherein the frame body defines a shaft hole, and wherein:

the hinge pin (600) penetrates through the shaft hole, the shaft sleeve (700) is arranged between the hinge pin (600) and the frame body, the shaft sleeve (700) is provided with an inner wall surface and an outer wall surface, the outer wall surface is in contact with the frame body, the inner wall surface is in running fit with the hinge pin (600), and the blade (200) is connected with the hinge pin (600).

11. A noise reduction system comprising the noise reduction louver according to any one of claims 1 to 10 and a fan disposed on the air intake side.

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