CN214616928U

CN214616928U - Silencer and oxygen generator with same

Info

Publication number: CN214616928U
Application number: CN202120524307.7U
Authority: CN
Inventors: 王超
Original assignee: Guangdong Owgels Science And Technology Co ltd
Current assignee: Guangdong Owgels Science And Technology Co ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-11-05
Anticipated expiration: 2031-03-12

Abstract

The utility model discloses a silencer, which comprises a shell, an air inlet pipe and an air outlet pipe, wherein the shell is provided with a first cavity, a second cavity and a third cavity, and the second cavity is communicated with the first cavity and the third cavity; the partial pipeline of the air inlet pipe is arranged in the first cavity, so that the air inlet of the air inlet pipe is positioned outside the shell, the air outlet of the air inlet pipe is communicated into the second cavity, and the partial pipeline of the air inlet pipe arranged in the first cavity is provided with air holes; the outlet pipe is arranged in the third cavity in a pipeline mode, the air outlet of the outlet pipe is arranged outside the shell, and the air inlet of the outlet pipe is communicated with the third cavity. And the silencer is connected with the air inlet of the compressor of the oxygen generator. The utility model discloses the silencer adopts multiple noise elimination mode, and noise cancelling effect is obvious, silencer inner structure simple, and the air current passes through efficiently, and the noise is little.

Description

Silencer and oxygen generator with same

Technical Field

The utility model relates to an oxygenerator part, especially a silencer and be equipped with oxygenerator of this silencer.

Background

The oxygen generator is a kind of machine for producing oxygen and its principle is that it utilizes air separation technology. The oxygen generator based on molecular sieve principle is filled with molecular sieve, and can adsorb nitrogen in air during pressurizing, collect the residual unabsorbed oxygen and purify to obtain high-purity oxygen.

But the compressor of the oxygen generator inevitably generates more or less noise during operation. The control of compressor noise is directly related to the noise of the whole machine product. Therefore, the noise problem of the compressor has become an important index for measuring the comprehensive performance of the compressor. Wherein the noise at the compressor air inlet is the dominant aerodynamic noise. Generally, a muffler is installed at an air inlet of the compressor. Therefore, the silencer is an important component of the oxygen generator, but most of the existing compressors adopt the silencing holes on the silencing barrels for silencing, the silencing mode is single, the silencing effect is not obvious, the internal structure of the silencer is complex, the air flow passing efficiency is not obvious, audible components in frequency spectrum are high, and the noise is large.

Therefore, a technical solution to the above problems is needed.

SUMMERY OF THE UTILITY MODEL

In order to make up some deficiencies that exist among the prior art, the utility model aims to provide a silencer.

The utility model discloses a reach its purpose, the technical scheme of adoption as follows: a muffler, comprising: the shell is provided with a first cavity, a second cavity and a third cavity, and the second cavity is communicated with the first cavity and the third cavity; the air inlet pipe is arranged in the first cavity in a partial pipeline mode, so that an air inlet of the air inlet pipe is positioned outside the shell, an air outlet of the air inlet pipe is communicated into the second cavity, and air holes are formed in the partial pipeline of the air inlet pipe arranged in the first cavity; and the outlet pipe is arranged in the third cavity in a pipeline manner, so that the air outlet of the outlet pipe is arranged outside the shell, and the air inlet of the outlet pipe is communicated with the third cavity.

The utility model has the effects that: the utility model discloses a simple setting intake pipe and outlet duct set up the gas pocket in the intake pipe on the casing, make the noise rub in the hole of gas pocket and convert into the heat energy consumption and scatter, make the sound wave through the silencer weaken, in the intake pipe communicates the second cavity, utilize the sectional area that admits air to change the noise reduction suddenly, the silencer adopts multiple noise elimination mode, noise cancelling effect is obvious, silencer inner structure is simple, the air current passes through efficiently, and the noise is little.

In some embodiments, the casing is provided with a first clamping groove and a second clamping groove, the air inlet pipe is provided with a first clamping plate, the air outlet pipe is provided with a second clamping plate, the air inlet pipe is fixed on the casing through the cooperation of the first clamping plate and the first clamping groove, and the air outlet pipe is fixed on the casing through the cooperation of the second clamping plate and the second clamping groove. Therefore, the air inlet pipe and the air outlet pipe are clamped on the shell, so that the air inlet pipe and the air outlet pipe cannot rotate randomly.

In some embodiments, the first clamping groove is disposed on a side surface of the second clamping groove, and the housing is further provided with a fixing plate, and the fixing plate can fix the first clamping plate and the second clamping plate on the first clamping groove and the second clamping groove, respectively. Therefore, the air inlet pipe and the air outlet pipe can be fixed on the shell, and the air inlet pipe and the air outlet pipe cannot be loosened on the shell.

In some embodiments, a mounting plate is disposed outside the housing, and the mounting plate is provided with a mounting hole. Thus, the housing may be mounted to the compressor by the mounting plate.

In some embodiments, the shell comprises a cylinder, a partition plate and a tail cover, wherein the cylinder is divided in the length direction to form a first cavity and a third cavity; one end of the cylinder body is provided with an air inlet pipe mounting hole and an air outlet pipe mounting hole, the other end of the cylinder body is provided with a mounting hole, the partition plate and the tail cover are both arranged on the mounting hole, and a second cavity is formed between the tail cover and the partition plate; be equipped with through-hole and blast pipe on the baffle, baffle and tail-hood all set up when the installing port, and first cavity of second cavity accessible through-hole and blast pipe intercommunication respectively and third cavity. Therefore, the shell is simple in structure and convenient to disassemble and maintain.

In some embodiments, the outlet pipe is arranged in the third cavity, part of the pipeline and the exhaust pipe are positioned in the same axial direction, and the inlet pipe is inserted on the through hole and communicated with the second cavity. Therefore, the air flow passes through the exhaust pipe and the third cavity in the shell and then reaches the air outlet pipe, so that the air flow passes through the pipeline with discontinuous acoustic impedance, the noise is reduced, and the air outlet pipe and the exhaust pipe are positioned in the same axial direction, so that the air outlet efficiency is ensured.

In some embodiments, the partition plate and the tail cover are both provided with flanges, and the partition plate and the tail cover are both mounted on the mounting opening of the barrel through the flanges. Therefore, the partition plate and the tail cover can be detached from the cylinder body, so that the muffler is convenient to overhaul.

Still include an oxygenerator, including foretell silencer, the silencer is connected at the compressor air inlet of oxygenerator.

Drawings

Fig. 1 is a perspective view of a muffler according to some embodiments of the present invention;

fig. 2 is a left side view of a muffler of some embodiments of the present invention;

FIG. 3 is a schematic cross-sectional view taken along A-A in FIG. 2;

fig. 4 is a perspective view of a cartridge according to some embodiments of the present invention from the front end;

fig. 5 is a perspective view of a cartridge according to some embodiments of the present invention from the rear end;

fig. 6 is a perspective view of a retaining plate according to some embodiments of the present invention;

FIG. 7 is a perspective view of some embodiments of the baffle of the present invention;

FIG. 8 is a perspective view of a tail cap according to some embodiments of the present invention;

fig. 9 is a perspective view of an air inlet tube according to some embodiments of the present invention;

fig. 10 is a perspective view of an outlet tube according to some embodiments of the present invention;

FIG. 11 is a perspective view of an oxygen generator with silencers according to some embodiments of the present invention;

fig. 12 is a schematic exploded view of the oxygen generator in fig. 11.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 schematically shows a silencer according to the present invention, which has a noise-propagating air flow duct, and in which noise in the duct can be attenuated or reflected back by noise reduction means.

Referring to fig. 1 to 10, the muffler includes a housing 1, an inlet pipe 2, and an outlet pipe 3.

The shell 1 comprises a cylinder 11, a partition plate 12 and a tail cover 13, wherein the cylinder 11 of the shell 1 is partitioned in the length direction, so that a first cavity 111 and a third cavity 112 are formed inside the cylinder 11; the front end of the cylinder 11 is provided with an air inlet pipe mounting hole 113 and an air outlet pipe mounting hole 114, the rear end of the cylinder 1 is provided with a mounting hole 115, the partition plate 12 and the tail cover 13 are both provided with flanges 121, the flanges 121 comprise a first flange 1211, a second flange 1212 and a second flange 1213, the partition plate 12 is provided with a first flange 1211 and a second flange 1212, the partition plate 12 is respectively embedded into the first cavity 111 and the third cavity 112 of the cylinder through the first flange 1211 and the second flange 1212, the tail cover 13 is provided with a third flange 1213, the tail cover 13 is embedded into the mounting hole 115 of the cylinder 1 through the third flange 1213, the tail cover 13 is arranged outside the partition plate 12, the partition plate 12 and the tail cover 13 are both installed on the mounting hole 115 of the cylinder 11 through the flanges 121, a second cavity 122 is formed between the tail cover 13 and the partition plate 12, the partition plate 12 and the tail cover 13 are detachable on the cylinder 1, and the muffler can be inspected by detaching the partition plate 12 and the tail cover 13, the muffler is convenient to overhaul; the partition plate 12 of the casing 1 is further provided with a through hole 123 and an exhaust pipe 124, so that when the partition plate 12 and the tail cover 13 are arranged at the mounting opening 115, the second cavity 122 can be respectively communicated with the first cavity 112 and the third cavity 122 through the through hole 123 and the exhaust pipe 124, the casing 1 is simple in structure, and the casing 1 is convenient to disassemble and maintain.

Part of the pipeline of the air inlet pipe 2 is inserted into the first cavity 111 of the cylinder 1 through the air inlet pipe mounting hole 113 of the cylinder 11, the air outlet of the air inlet pipe 2 is inserted into the through hole 123 of the partition plate 12, the air outlet of the air inlet pipe is communicated into the second cavity 122, and the air inlet of the air inlet pipe 2 is positioned outside the shell 1; and the air inlet pipe 2 is also provided with air holes 21 on the part of the pipeline arranged in the first cavity 111, so that the noise generated by the air inlet flow is rubbed in the pores of the air holes 21 of the air inlet pipe 2 and converted into heat energy to be dissipated, and the sound wave passing through the silencer is weakened.

Part of the pipeline of the air outlet pipe 3 is inserted into the third cavity 112 of the cylinder 1 through the air outlet pipe mounting hole 114, so that the air outlet of the air outlet pipe 3 is arranged outside the shell 1, and the air inlet of the air outlet pipe 3 is communicated with the third cavity 112; part of the pipeline of the air outlet pipe 3 arranged in the third cavity 112 and the exhaust pipe 124 are positioned in the same axial direction, so that the intake air flows in the shell 1 through the exhaust pipe 123, the third cavity 112 and then to the air outlet pipe 3 in sequence, and the intake air flows through the pipeline with discontinuous acoustic impedance, so that the noise is reduced; the air outlet pipe 3 and the exhaust pipe 124 are positioned on the same axial direction, so that the air outlet efficiency of the air outlet pipe 3 is ensured.

Moreover, the barrel 11 is provided with a first clamping groove 116 and a second clamping groove 117, the outer side of the air inlet pipe 2 is provided with a first clamping plate 22, when the air inlet pipe 2 is inserted into the barrel 1 through the air inlet pipe mounting hole 113, the first clamping plate 22 of the air inlet pipe 2 is clamped on the first clamping groove 116 on the barrel 11, and the air inlet pipe 2 is fixed on the shell 1; the second clamping plate 31 is arranged on the air outlet pipe 3, when the air outlet pipe 3 is inserted into the barrel body 1 through the air outlet pipe mounting hole 114, the second clamping plate 31 of the air outlet pipe 3 is clamped on the second clamping groove 117 of the barrel body 11, the air outlet pipe 3 is fixed on the shell body 1, and the air inlet pipe 2 and the air outlet pipe 3 are clamped on the shell body 1, so that the air inlet pipe 2 and the air outlet pipe 3 cannot rotate randomly when being fixed on the shell body 1. Moreover, the first clamping groove 116 is arranged on the side surface of the second clamping groove 117, the fixing plate 14 is further arranged on the casing 1, the fixing plate 14 can be fixed on the casing 1 through screws, the first clamping plate 22 and the second clamping plate 31 are respectively fixed on the first clamping groove 116 and the second clamping groove 117, and the air inlet pipe 2 and the air outlet pipe 3 are fixed on the casing 1, so that the air inlet pipe 2 and the air outlet pipe 3 cannot be loosened on the casing 1.

Further, the cylinder 1 is also provided with an installation plate 15, the installation plate 15 is provided with an installation hole 151, and the shell 1 can be installed on the shell 1 through the installation plate 15.

The working principle is as follows: referring to fig. 11 and 12, in some embodiments, an oxygen generator 4 including the above muffler is provided with a filter 41 for filtering air and a compressor 42 for compressing air in the oxygen generator 4, the compressor 42 is provided with a muffler mounting groove 421, the above muffler is mounted on the muffler mounting groove 421, the muffler is fixed on the muffler mounting groove 421 by fixing the mounting hole 151 with screws, an air inlet of an air inlet pipe 2 of the muffler is connected to an air outlet of the filter 41, an air outlet of an air outlet pipe 3 of the muffler is connected to an air inlet of the compressor 42, and the muffler is connected to the filter 41 and the compressor 42 of the oxygen generator 4. When the oxygen generator 4 is used, air filtered by the filtering device 41 enters from the air inlet of the air inlet pipe 2, enters the second cavity 122 from the air inlet pipe 2, is discharged into the third cavity 112 from the second cavity 122 through the air outlet pipe 124, is discharged to the shell 1 from the air inlet of the air outlet pipe 3 in the third cavity 112, is discharged to the air inlet of the compressor 42 from the air outlet of the air outlet pipe 3, and enters the compressor 42 for compression after being muffled by the muffler, so that the oxygen generator 4 has good muffling efficiency and low noise.

The utility model simply arranges the air inlet pipe 2 and the air outlet pipe 3 on the shell 1, and arranges the air holes 21 on the air inlet pipe 2, so that the air inlet noise is rubbed in the pores of the air holes 21 of the air inlet pipe 2 and is converted into heat energy which is dissipated, and the sound wave passing through the silencer is weakened; a second cavity 122 formed by the partition plate 12 and the tail cover 13 is arranged, the air inlet pipe 2 is communicated into the second cavity 122, and the noise of the air inlet flow is reduced by utilizing the sudden change of the air inlet cross section; set up outlet duct 3 in the third cavity 112 and to the outer exhaust of casing 1, discharge compressor 42 air inlet by the gas outlet of outlet duct 3 on, the air current passes through the discontinuous pipeline of acoustic impedance, makes the noise reduction of giving vent to anger, the utility model discloses the silencer adopts multiple noise elimination mode, and noise cancelling effect is obvious, and silencer inner structure is simple, and the air current passes through efficiency obviously, and the noise is little.

The above are only some embodiments of the present invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. A muffler, characterized by comprising:

the shell is provided with a first cavity, a second cavity and a third cavity, and the second cavity is communicated with the first cavity and the third cavity;

the air inlet pipe is arranged in the first cavity in a partial pipeline mode, so that an air inlet of the air inlet pipe is positioned outside the shell, an air outlet of the air inlet pipe is communicated into the second cavity, and air holes are formed in the partial pipeline of the air inlet pipe arranged in the first cavity; and

and the outlet pipe is arranged in the third cavity in a pipeline way, so that the outlet of the outlet pipe is arranged outside the shell, and the air inlet of the outlet pipe is communicated with the third cavity.

2. The muffler of claim 1, wherein the housing is provided with a first locking groove and a second locking groove, the inlet pipe is provided with a first locking plate, the outlet pipe is provided with a second locking plate, the inlet pipe is fixed on the housing by the first locking plate and the first locking groove, and the outlet pipe is fixed on the housing by the second locking plate and the second locking groove.

3. The muffler of claim 2, wherein the first engaging groove is disposed at a side of the second engaging groove, and the housing further comprises a fixing plate for fixing the first engaging plate and the second engaging plate to the first engaging groove and the second engaging groove, respectively.

4. The muffler of claim 1, wherein a mounting plate is disposed outside the housing, and the mounting plate has a mounting hole.

5. The muffler of claim 1, wherein the housing comprises a cylinder, a baffle plate and a tail cap, the cylinder is divided in a length direction to form a first cavity and a third cavity; one end of the cylinder body is provided with an air inlet pipe mounting hole and an air outlet pipe mounting hole, the other end of the cylinder body is provided with a mounting opening, the partition plate and the tail cover are both arranged on the mounting opening, and a second cavity is formed between the tail cover and the partition plate; be equipped with through-hole and blast pipe on the baffle, baffle and tail-hood all set up during the installing port, the second cavity accessible through-hole and blast pipe communicate first cavity and third cavity respectively.

6. The muffler of claim 5, wherein a portion of the pipe of the outlet pipe disposed in the third cavity is located in the same axial direction as the exhaust pipe, and the inlet pipe is inserted into the through hole and communicated with the second cavity.

7. The muffler of claim 5 wherein the baffle and the tail cap are each provided with a flange, and wherein the baffle and the tail cap are each mounted to the mounting opening of the barrel via the flanges.

8. An oxygen generator comprising a muffler as claimed in any one of claims 1 to 7 connected to the compressor inlet of the oxygen generator.