CN215412475U

CN215412475U - Ventilation silencer

Info

Publication number: CN215412475U
Application number: CN202121386276.XU
Authority: CN
Inventors: 周腾龙; 周玉柱; 梁剑涛; 李剑; 陈马进; 刘利岳; 张文红; 邓培旺; 郭思丽; 袁柏霖; 黄新文; 范银华
Original assignee: Guangdong Technology Center Of Work Safety Co ltd
Current assignee: Guangdong Technology Center Of Work Safety Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-01-04
Anticipated expiration: 2031-06-21

Abstract

The utility model is used in the field of mufflers, and particularly relates to a ventilation muffler, which comprises an air inlet pipe; an air outlet pipe; the first silencing pipe is connected with the air inlet pipe and the air outlet pipe and is provided with a first through hole; the pipe diameter of the second silencing pipe is larger than that of the first silencing pipe, the first silencing pipe penetrates through the second silencing pipe, and a second through hole is formed in the second silencing pipe; the pipe, the cover is equipped with the clearance between pipe and the second muffler pipe outside the second muffler pipe, is equipped with between pipe and the second muffler pipe and inhales the sound cotton. The sound waves of outdoor noise and noise generated by wind can be eliminated and reduced in the first through hole and the second through hole, so that the noise elimination effect is realized, the double-layer noise elimination structure formed by the first noise elimination pipe and the second noise elimination pipe can eliminate noise with wider frequency, a better noise elimination effect is obtained, and the sound absorption cotton can further absorb and reduce the noise and improve the noise elimination effect.

Description

Ventilation silencer

Technical Field

The utility model is used in the field of silencers, and particularly relates to a ventilation silencer.

Background

At present, the common ventilation window realizes air circulation by means of indoor and outdoor pressure difference, and is difficult to form stable and controllable airflow. The common muffler can only realize sound waves with a narrow frequency range, and if the frequency range of the sound waves is too wide, the sound attenuation effect is poor, and the sound attenuation with wide frequency cannot be realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims to at least solve one of the technical problems in the prior art and provides a ventilation silencer which is wider in silencing frequency and better in silencing effect.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a ventilation muffler comprises

An air inlet pipe;

an air outlet pipe;

the first silencing pipe is connected with the air inlet pipe and the air outlet pipe and is provided with a first through hole;

the pipe diameter of the second silencing pipe is larger than that of the first silencing pipe, the first silencing pipe penetrates through the second silencing pipe, and a second through hole is formed in the second silencing pipe;

the round pipe is sleeved outside the second silencing pipe, and sound absorption cotton is arranged between the round pipe and the second silencing pipe.

The technical scheme at least has the following advantages or beneficial effects: in the use, wind enters into first muffler pipe from the air intake, and the sound wave of outdoor noise and the produced noise of wind can eliminate in first perforation and second perforation and reduce to realize the effect of eliminating the noise, this kind of double-deck noise cancelling structure who sets up first muffler pipe and second muffler pipe and form can eliminate the noise of frequency broad, thereby obtain better noise cancelling effect, inhale the sound cotton moreover and can further absorb, reduce the noise, improve noise cancelling effect.

The improved air conditioner further comprises a housing, wherein the housing is provided with an air inlet and an air outlet, the air inlet pipe is arranged inside the housing and connected with the air inlet, and the air outlet pipe is arranged inside the housing and connected with the air outlet.

As a further improvement of the technical scheme of the utility model, a first carbon fiber filter assembly is arranged between the air inlet pipe and the air inlet, a second carbon fiber filter assembly is arranged between the air outlet pipe and the air outlet, and catalysts are attached to the first carbon fiber filter assembly and the second carbon fiber filter assembly.

As a further improvement of the technical scheme of the utility model, fences and filter screens are arranged at the air inlet and the air outlet.

As further improvement of the technical scheme of the utility model, the air inlet pipe and the air outlet pipe are both of bent pipe structures.

Further as an improvement of the technical scheme of the utility model, the first silencing pipe is one of a stainless steel pipe, an aluminum pipe, an electroplated or painted steel plate and a plastic plate.

As a further improvement of the technical solution of the present invention, a distance between the first muffling pipe and the second muffling pipe is the same as a distance between the second muffling pipe and the circular pipe.

As a further improvement of the technical solution of the present invention, a ratio of a distance between the first muffling pipe and the second muffling pipe to a distance between the second muffling pipe and the circular pipe is between 1:3 and 3: 1.

As a further improvement of the technical scheme of the utility model, the perforation rate on the first silencing pipe is 1-3%.

As a further improvement of the technical scheme of the utility model, the perforation rate on the second silencing pipe is 1% -3%.

Drawings

The utility model will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic block diagram of one embodiment of the present invention;

FIG. 2 is a schematic view of the embodiment of FIG. 1 showing the structure of the open cover;

FIG. 3 is a schematic view of the embodiment of FIG. 1 with the cover open, the baffle removed, and the barrel removed.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.

In the utility model, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.

Referring to fig. 1 to 3, the present invention provides a ventilation silencer, including an air inlet pipe 1, an air outlet pipe 2, a first silencing pipe 3 and a second silencing pipe 4, wherein the first silencing pipe 3 is connected to the air inlet pipe 1 and the air outlet pipe 2, the first silencing pipe 3 is provided with a first through hole, the diameter of the second silencing pipe 4 is larger than that of the first silencing pipe 3, the first silencing pipe 3 is inserted into the second silencing pipe 4, the second silencing pipe 4 is provided with a second through hole, a circular pipe 5 is sleeved outside the second silencing pipe 4, a gap is provided between the circular pipe 5 and the second silencing pipe 4, and a sound absorbing cotton is arranged in the gap between the circular pipe 5 and the second silencing pipe 4.

In the use, wind enters into first muffler pipe 3 from the air intake, and the sound wave of outdoor noise and the produced noise of wind can eliminate in first perforation and second perforation and reduce to realize the effect of eliminating the noise, this kind of double-deck noise cancelling structure who sets up first muffler pipe 3 and second muffler pipe 4 and form can eliminate the noise of frequency spectrum broad, thereby obtain better noise elimination performance, inhale the sound cotton moreover and can further absorb, the noise reduction, improve noise cancelling effect.

In some embodiments, the ventilation silencer further comprises a housing 6, the housing 6 is provided with an air inlet and an air outlet, the air inlet pipe 1 is arranged inside the housing 6 and connected with the air inlet, and the air outlet pipe 2 is arranged inside the housing 6 and connected with the air outlet.

Wherein, first muffler pipe 3, second muffler pipe 4 and pipe 5 are both ends open-ended tubular structure, air-supply line 1 and play tuber pipe 2 are connected respectively to the both ends of first muffler pipe 3, first muffler pipe 3 wears to establish inside second muffler pipe 4, second muffler pipe 4 wear to establish inside pipe 5 and the pipe 5 between have certain clearance, inhale the cotton packing of sound in the clearance between second muffler pipe 4 and

pipe

5, 6 inside two baffles 7 that are equipped with along the length direction interval arrangement of housing 6 of housing, two baffles 7 all block up the both ends at pipe 5 and second muffler pipe 4.

In the embodiment of the present invention, the air inlet pipe 1 and the air outlet pipe 2 are both of a bent pipe structure.

In order to reduce the resistance, both the first muffling tube 3 and the second muffling tube 4 are straight tube structures in the present invention.

Of course, in the case where the partial resistance is allowed to exist, the first muffling pipe 3 and the second muffling pipe 4 may be each provided in an acoustic flow type structure.

The first silencing pipe 3 is one of a stainless steel pipe, an aluminum pipe, an electroplated or painted steel plate and a plastic plate, and the second silencing pipe 4 is one of a stainless steel pipe, an aluminum pipe, an electroplated or painted steel plate and a plastic plate.

The pipe thickness of the first silencing pipe 3 is 0.5-1 mm, the aperture of a first perforation formed on the first silencing pipe 3 is controlled to be 0.5-1 mm, the first perforation is uniformly distributed on the first silencing pipe 3, and the perforation rate on the first silencing pipe 3 is 1% -3%.

The pipe thickness of the second muffling pipe 4 is 0.5-1 mm, the aperture of second through holes formed in the second muffling pipe 4 is controlled to be 0.5-1 mm, the second through holes are uniformly distributed on the second muffling pipe 4, and the perforation rate on the second muffling pipe 4 is 1% -3%.

In the present invention, the perforation rate of the first muffling tube 3 is 2% and the perforation rate of the second muffling tube 4 is 1%.

The distance between the first silencing pipe 3 and the second silencing pipe 4 is a front cavity, the distance between the second silencing pipe 4 and the circular pipe 5 is a rear cavity, the thickness of the front cavity and the thickness of the rear cavity can be the same or different according to different frequencies of noise to be absorbed, and when the thickness of the front cavity is different from that of the rear cavity, the thickness setting ratio of the front cavity to the rear cavity is between 1:3 and 3: 1.

Furthermore, a first carbon fiber filtering component 8 is arranged between the air inlet pipe 1 and the air inlet, a second carbon fiber filtering component 9 is arranged between the air outlet pipe 2 and the air outlet, and catalysts are attached to the first carbon fiber filtering component 8 and the second carbon fiber filtering component 9.

Specifically, a first carbon fiber filtering component 8 is arranged inside a housing 6, two ends of the first carbon fiber filtering component 8 are respectively connected with an air inlet pipe 1 and an air inlet, a second carbon fiber filtering component 9 is arranged inside the housing 6, and two ends of the second carbon fiber filtering component 9 are respectively connected with an air outlet pipe 2 and an air outlet.

The total volatile organic compounds carried in the airflow entering from the air inlet can be decomposed through the first carbon fiber filtering component 8, and the total volatile organic compounds carried in the airflow discharged from the air outlet can be decomposed through the second carbon fiber filtering component 9.

In other embodiments, a barrier 10 and a screen are installed at both the air inlet and the air outlet. Used for blocking fallen leaves, insects and other sundries.

Of course, the present invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims

1. A ventilation muffler characterized in that: comprises that

An air inlet pipe;

an air outlet pipe;

2. The ventilation muffler of claim 1, wherein: the air inlet pipe is arranged inside the housing and connected with the air inlet, and the air outlet pipe is arranged inside the housing and connected with the air outlet.

3. The ventilation muffler of claim 2, wherein: the air inlet pipe with be equipped with first carbon fiber filtering component between the air intake, go out the tuber pipe with be equipped with second carbon fiber filtering component between the air outlet, first carbon fiber filtering component with all adhere to the catalyst in the second carbon fiber filtering component.

4. The ventilation muffler of claim 2, wherein: the air inlet with air outlet department all installs fence and filter screen.

5. The ventilation muffler of claim 1, wherein: the air inlet pipe and the air outlet pipe are both of bent pipe structures.

6. The ventilation muffler of claim 1, wherein: the first silencing pipe is one of a stainless steel pipe, an aluminum pipe, an electroplated or painted steel plate and a plastic plate.

7. The ventilation muffler of claim 1, wherein: the distance between the first silencing pipe and the second silencing pipe is the same as the distance between the second silencing pipe and the circular pipe.

8. The ventilation muffler of claim 1, wherein: the ratio of the distance between the first silencing pipe and the second silencing pipe to the distance between the second silencing pipe and the circular pipe is between 1:3 and 3: 1.

9. The ventilation muffler of claim 1, wherein: the perforation rate on the first silencing pipe is 1% -3%.

10. The ventilation muffler of claim 1, wherein: the perforation rate on the second silencing pipe is 1% -3%.