CN217979238U

CN217979238U - Tail end silencer

Info

Publication number: CN217979238U
Application number: CN202221001738.6U
Authority: CN
Inventors: 莫非; 罗元易
Original assignee: Xiamen Quietime Co Ltd
Current assignee: Xiamen Quietime Co Ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-12-06
Anticipated expiration: 2032-04-28

Abstract

The utility model discloses a terminal silencer, include: the body with air intake and air outlet, be fixed in the connecting piece in the body, locate the adjusting screw in the body, establish adjusting nut and the sound absorber on adjusting screw in the cover, adjusting screw's one end and connecting piece fixed connection, the other end stretches out the body from the air outlet, the sound absorber has first end and second end, the size of the cross section of sound absorber is from first end to second end and is progressively increased progressively, the first end of sound absorber is close to the air intake, the air intake is kept away from to the second end of sound absorber, adjusting nut and adjusting screw threaded connection and with the second end butt of sound absorber. The utility model discloses a body and acoustic absorber constitute hindering nature silencer, have the effect that reduces wind and make an uproar, change the length of acoustic absorber business turn over body through adjusting screw and adjusting nut, can change the air-out area of body air outlet on the one hand, have the effect of adjusting the amount of wind, and on the other hand can change the area of acoustic absorber in the body, has the effect of adjusting noise elimination performance.

Description

Tail end silencer

Technical Field

The utility model relates to a silencer technical field, in particular to terminal silencer.

Background

Because the traditional natural ventilation can not meet the requirement of modern families on the air quality inside residential buildings, the fresh air unit is popularized in numerous residential buildings, and under the current large environment, no matter a split air conditioner or a household central air conditioner is installed in the building, the arrangement of a suitable fresh air system becomes a necessary development direction. However, with the common use of fresh air handling units, the noise problem caused by the fresh air handling units is more and more prominent, wherein the air supply noise of the air supply opening is a serious problem, a good noise solution is not available at present, the air noise problem is often solved by reducing the air speed in the air pipe in engineering, but with the reduction of the air speed, the original air supply requirement is difficult to meet. In addition, because the air pipes in different rooms are different in length, namely the air resistances of the air pipes are different, the air quantity of a long-distance air port is small, the air quantity of a short-distance air port is large, and the air quantity cannot be adjusted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a terminal silencer to reduce wind and make an uproar, adjust the amount of wind.

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a terminal silencer, include: the sound absorber comprises a pipe body, a connecting piece, an adjusting screw rod, an adjusting nut and a sound absorber. Wherein, the body air intake and air outlet have, the connecting piece be fixed in the body, adjusting screw locate in the body, just adjusting screw's one end and connecting piece fixed connection, the other end is followed the air outlet stretch out the body, the sound absorber have first end and second end, the size of the cross section of sound absorber increase progressively from first end to second end, the sound absorber cover locate on adjusting screw, first end be close to the air intake, the second end keep away from the air intake, adjusting nut threaded connection in adjusting screw on, and with the second end butt of sound absorber, rotatory the adjustable sound absorber of adjusting nut length of passing in and out the body.

Further, the sound absorber includes: an inner housing, an outer housing, and a sound absorbing material. The inner shell is sleeved on the adjusting screw, the outer shell is made of a microporous plate, the outer shell is arranged outside the inner shell, a cavity is formed between the outer shell and the inner shell, and the sound absorption material is filled in the cavity.

Furthermore, the inner wall of the inner shell is provided with threads, and the inner shell is in threaded connection with the adjusting screw rod.

Or, adjusting screw on the cover be equipped with the spring, one end and the connecting piece butt of spring, the first end butt of the other end and sound absorber.

Furthermore, the connecting piece is made of a pore plate, the connecting piece is vertically connected to the air outlet, and the adjusting screw rod is vertically fixed at the center of the connecting piece.

Preferably, the size of the opening on the pore plate is gradually reduced from the middle part to two sides of the pore plate.

Preferably, the sound absorption material is carbon fiber cotton or glass cotton.

Preferably, the size of the cross section of the second end of the sound absorber is larger than or equal to that of the cross section of the pipe body.

Furthermore, the tail end silencer is installed at an air supply opening of the fresh air handling unit.

Adopt above-mentioned technical scheme, the beneficial effects of the utility model are that: the utility model discloses a hindering nature silencer, its simple structure has the effect that reduces wind and make an uproar. The utility model discloses a size of the cross section of acoustic absorber increases progressively from its first end to second end, adjusts the length of acoustic absorber business turn over body through adjusting screw and adjusting nut, can change the air-out area size of body air outlet on the one hand, and then realizes air regulation, and on the other hand can change through changing the area of acoustic absorber in the body the utility model discloses a noise cancelling effect makes the utility model discloses have the effect of adjusting noise cancelling performance.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment.

FIG. 2 is a schematic half-sectional view of the first embodiment.

Fig. 3 is a left side view of fig. 1.

Fig. 4 is a right-side schematic view of fig. 1.

Fig. 5 is an isometric half-section schematic view of a second embodiment.

Fig. 6 is a schematic half-sectional view of the sound absorber of the second embodiment.

Fig. 7 is a left side view schematically illustrating the second embodiment.

Fig. 8 is a schematic right-view diagram of the second embodiment.

Fig. 9 is an isometric half-section schematic view of a third embodiment.

Wherein: 1. the sound absorption type sound absorption device comprises a pipe body, 11 parts of an air inlet, 12 parts of an air outlet, 2 parts of a connecting piece, 3 parts of an adjusting screw rod, 4 parts of an adjusting nut, 5 parts of a sound absorption body, 51 parts of a first end, 52 parts of a second end, 53 parts of an inner shell, 54 parts of an outer shell, 55 parts of sound absorption materials, 56 parts of threads and 6 parts of a spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Example one

As shown in fig. 1 to 4, the end silencer of the present embodiment is installed at the air supply port of the fresh air handling unit, and the end silencer includes: the sound absorber comprises a pipe body 1, a connecting piece 2, a sound absorber 5, an adjusting screw rod 3 and an adjusting nut 4. The tube body 1 is provided with an air inlet 11 and an air outlet 12, and the air inlet 11 of the tube body 1 is connected with an air supply outlet of the fresh air handling unit. Be equipped with connecting piece 2 and adjusting screw 3 in the body 1, connecting piece 2 and body 1 fixed connection, adjusting screw 3's one end and connecting piece 2 fixed connection, its other end stretches out body 1 from the air outlet 12 of body 1. The adjusting screw 3 is sleeved with a sound absorber 5 and an adjusting nut 4. The sound absorber 5 has a first end 51 and a second end 52, the cross section of the sound absorber 5 increases in size from the first end 51 to the second end 52, the first end 51 of the sound absorber 5 is close to the intake vent 11, and the second end 52 is far away from the intake vent 11. The adjusting nut 4 is in threaded connection with the adjusting screw 3 and abuts against the second end 52 of the sound absorber 5.

In this embodiment, the pipe body 1 and the sound absorber 5 constitute a resistive muffler, which absorbs sound energy and reduces wind noise. Adjusting nut 4 is rotated to make adjusting nut 4 advance or retreat along adjusting screw 3 to change the position of sound absorber 5 on adjusting screw 3, and then through the special shape structure of sound absorber 5, change the air-out area of air outlet 12 of body 1, realize the regulation to the amount of wind. In addition, the area of the sound absorber 5 in the pipe body 1 is changed by adjusting the length of the sound absorber 5 entering and exiting the pipe body 1, the sound absorption areas are different, the sound absorption effect is different, the noise elimination performance of the terminal silencer can be adjusted, and then the terminal silencer can be adjusted according to the actual wind noise condition to achieve the better noise elimination effect and the ventilation effect. The tail end silencer of this embodiment is installed to each supply-air outlet department at new fan unit, adjusts the amount of wind, can realize that the amount of wind of each supply-air outlet of new fan unit is balanced.

Example two

As shown in fig. 5 to 8, the main difference between the present embodiment and the first embodiment is that the sound absorber 5 of the present embodiment is different from the adjusting screw 3 in the manner of fitting. The sound absorber 5 of the present embodiment includes: the inner casing 53 is sleeved on the adjusting screw 3 and is in threaded connection with the adjusting screw 3, the outer casing 54 is covered outside the inner casing 53, a cavity is formed between the inner casing 53 and the outer casing 54, and the sound absorption material 55 is filled in the cavity. The sound absorber 5 of embodiment one can freely move on adjusting screw 3, has the clearance between sound absorber 5 and the adjusting screw 3, and when sound absorber 5 relied on the start new fan unit, 5 thrust of sound absorber are given to the air that the supply-air outlet sent, push sound absorber 5 to with adjusting nut 4 butt, receive the existence in air current influence and this clearance, sound absorber 5 can collide with adjusting screw 3 and produce the noise, influence the noise cancelling effect of terminal silencer. In this embodiment, the sound absorber 5 is in threaded connection with the adjusting screw 3, and on the premise that the position of the sound absorber 5 on the adjusting screw 3 is adjustable, the degree of freedom of the sound absorber 5 in the radial direction of the adjusting screw 3 is limited, so that the sound absorber 5 is tightly connected with the adjusting screw 3, and the collision noise of the first embodiment is eliminated.

The connecting piece 2 of this embodiment is made by the orifice plate, and the trompil size on the orifice plate diminishes gradually from the middle part to both sides of orifice plate. Connecting piece 2 vertical connection is in 12 departments of air outlet, and adjusting screw 3 vertical fixation is in the center department of connecting piece 2, and the connecting piece 2 of this embodiment has even fluidic effect, can steady air current, avoids producing the torrent and the radiation noise, avoids influencing the noise reduction effect of the terminal silencer of this embodiment.

In order to make the adjusting range of the air outlet area of the air outlet 12 of the pipe body 1 wide enough, the size of the cross section of the second end 52 of the sound absorber 5 is larger than or equal to the size of the cross section of the pipe body 1.

The sound absorbing material 55 of the present embodiment is carbon fiber cotton or glass cotton.

EXAMPLE III

As shown in fig. 9, the present embodiment is different from the first and second embodiments mainly in that the present embodiment is different in a manner of limiting the degree of freedom of the sound absorber 5 on the adjusting screw 3, the adjusting screw 3 of the present embodiment is sleeved with a spring 6, one end of the spring 6 abuts against the connecting piece 2, and the other end abuts against the first end 51 of the sound absorber 5.

In the second embodiment, the adjusting nut 4 is rotated backwards to increase the air outlet area of the air outlet 12 of the pipe 1, and the sound absorber 5 needs to be rotated backwards to change the position of the sound absorber 5. And this embodiment then adopts spring 6 to restrict the degree of freedom of sound absorber 5 on adjusting screw 3, makes sound absorber 5 support tightly between spring 6 and adjusting nut 4, avoids rocking and produces the noise to under the effect of spring 6, backward rotation adjusting nut 4, sound absorber 5 synchronous motion can remain throughout and support tight state, and 5 position control on the sound absorber is comparatively convenient.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A tip muffler, comprising:

a pipe body having an air inlet and an air outlet;

the connecting piece is fixed in the tube body;

the adjusting screw rod is arranged in the pipe body, one end of the adjusting screw rod is fixedly connected with the connecting piece, and the other end of the adjusting screw rod extends out of the pipe body from the air outlet;

the sound absorber is provided with a first end and a second end, the size of the cross section of the sound absorber is gradually increased from the first end to the second end, the sound absorber is sleeved on the adjusting screw rod, the first end is close to the air inlet, and the second end is far away from the air inlet;

and the adjusting nut is in threaded connection with the adjusting screw rod, is abutted against the second end of the sound absorber and is rotated to adjust the length of the sound absorber entering and exiting the pipe body.

2. The tip muffler of claim 1 wherein said sound absorber comprises:

the inner shell is sleeved on the adjusting screw rod;

the outer shell is made of a microporous plate and covers the outer part of the inner shell, and a cavity is formed between the outer shell and the inner shell;

and the sound absorption material is filled in the cavity.

3. The end muffler of claim 2, wherein the inner wall of the inner housing is threaded, and the inner housing is threadedly coupled to the adjusting screw.

4. The end muffler of claim 2, wherein the adjusting screw is sleeved with a spring, one end of the spring abuts against the connecting piece, and the other end of the spring abuts against the first end of the sound absorber.

5. The end muffler as claimed in claim 3 or 4, wherein the connection member is made of a perforated plate, the connection member is vertically connected to the outlet, and the adjusting screw is vertically fixed at the center of the connection member.

6. The end muffler of claim 5, wherein the size of the opening of the orifice plate is gradually decreased from the center of the orifice plate to both sides of the orifice plate.

7. The tip muffler of claim 6 wherein said sound absorbing material is carbon fiber wool or glass wool.

8. The end muffler of claim 7, wherein the second end of the sound absorber has a cross-sectional dimension equal to or greater than the cross-sectional dimension of the pipe body.

9. The end muffler of claim 1, mounted at an air supply port of a fresh air handling unit.