CN214998091U

CN214998091U - Double-deck muffler of oxygenerator

Info

Publication number: CN214998091U
Application number: CN202120259057.9U
Authority: CN
Inventors: 田丽娟; 王强; 梁小明
Original assignee: Jiangsu Konsung Biomedical Technology Co ltd
Current assignee: Jiangsu Konsung Biomedical Technology Co ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-12-03
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses a double-deck muffler of oxygenerator, including outer muffler, be equipped with interior muffler and hollow structure's baffle in the outer muffler, be equipped with the cavity in the outer muffler, and the baffle is located the cavity, the outer lane of baffle and the inner wall fixed connection of cavity, and the inner circle of baffle and the outer lane fixed connection of interior muffler, the top and the bottom of outer muffler are fixed mounting respectively has outer air inlet and outer gas vent, outer air inlet all is linked together with the cavity with outer gas vent. The utility model discloses an increase an interior muffler in the muffler outside, changed current conventional muffler structure, set up two-layer muffler, the diameter and the length of the different cavitys of two-layer muffler are different, correspond the sound frequency difference of reflection to eliminate different sound, and the design occupation space who has adopted inside and outside bilayer structure is little, and the elimination frequency range is wide, greatly reduced the pneumatic noise of oxygenerator.

Description

Double-deck muffler of oxygenerator

Technical Field

The utility model relates to a medical oxygenerator especially relates to a medical oxygenerator field is with double-deck muffler for reducing the pneumatic noise in the oxygenerator working process with double-deck muffler technical field.

Background

The oxygen generator is common civil oxygen generation equipment in the market, and the molecular sieve oxygen generator is an oxygen generation device for absorbing nitrogen in air based on a molecular sieve pressure swing adsorption technology so as to collect oxygen, and is a common treatment and auxiliary health-care means. The compressor is the most dominant noise source in the oxygen generator, determined by the product structure and the working principle. The suction and exhaust noise of the compressor in the periodic work is one of the most main pneumatic sound sources, and the rest and the use experience of a user can be influenced by the overhigh working and running noise of the compressor in the process of using the product for treatment or health care.

The noise of admitting air and exhausting of oxygenerator is user's main puzzlement, and the muffler is admitted air mostly and is single expansion chamber muffler for oxygenerator at present, can eliminate low and medium frequency noise, and is limited to the pneumatic noise silencing effect of medium and high frequency.

SUMMERY OF THE UTILITY MODEL

Based on background art has the muffler for oxygenerator to admit air mostly to singly expand chamber muffler, can eliminate the low and medium frequency noise, to the limited technical problem of pneumatic noise elimination effect of medium-high frequency, the utility model provides a double-deck muffler of oxygenerator.

The utility model provides an oxygenerator double-layer silencer, which comprises an outer silencer, wherein an inner silencer and a partition plate with a hollow structure are arranged in the outer silencer, and the outer silencer and the inner silencer are both in an expansion cavity form; the silencer is characterized in that a cavity is arranged in the outer silencer, the partition plate is located in the cavity and is of a hollow circular structure, the outer ring of the partition plate is fixedly connected with the inner wall of the cavity, the inner ring of the partition plate is fixedly connected with the outer ring of the inner silencer, and the outer ring and the inner ring of the partition plate are connected through baffles which are spaced from each other.

Preferably, the top and the bottom of the outer silencer are respectively and fixedly provided with an outer air inlet and an outer air outlet, and the outer air inlet and the outer air outlet are both communicated with the chamber.

Preferably, the outer air inlet of the outer silencer is on the same horizontal line with the outer air outlet.

Preferably, the outer air inlet of the outer silencer is not on the same horizontal line as the outer air outlet.

Preferably, the inner silencer is provided with a cavity, the top and the bottom of the inner silencer are respectively and fixedly provided with an inner air inlet and an inner exhaust port, and the inner air inlet and the inner exhaust port are communicated with the cavity.

Preferably, the outer muffler includes a cylindrical housing, and two arc covers integrally formed with both ends of the cylindrical housing.

Preferably, the outer muffler includes a cylindrical housing, and two arc covers connected to both ends of the cylindrical housing.

Preferably, the arc-shaped cover and two ends of the cylindrical shell are integrally formed.

Preferably, the arc-shaped cover is connected with two ends of the cylindrical shell through injection molding of a mold.

Preferably, the thickness of the separator is 2-3 mm.

Preferably, four arc-shaped holes with the same specification are formed in the partition plate.

The utility model has the advantages that: through increasing an interior muffler in the muffler outside, changed current conventional muffler structure, set up two-layer muffler, the diameter and the length of the different cavitys of two-layer muffler are different, correspond the sound frequency difference of reflection to eliminate different sound, and the design occupation space who has adopted inside and outside bilayer structure is little, and the elimination frequency range is wide, greatly reduced the pneumatic noise of oxygenerator.

Drawings

Fig. 1 is a schematic structural view of a double-layer silencer of an oxygen generator provided by the present invention;

fig. 2 is a schematic structural view of a double-layer silencer of an oxygen generator provided by the present invention;

fig. 3 is a schematic structural view of a double-layer silencer of an oxygen generator provided by the present invention;

fig. 4 is a schematic structural view of a double-layer silencer of an oxygen generator provided by the present invention.

In the figure: the silencer comprises an outer silencer 1, an inner silencer 2, a partition plate 3, a chamber 4, an arc-shaped cover 11, a cylindrical shell 12, an outer air inlet 13, an outer air outlet 14, an inner air inlet 21, an inner air outlet 22 and an arc-shaped hole 31.

Detailed Description

The present invention will be further explained with reference to the following embodiments.

Examples

Referring to fig. 1-4, the embodiment provides an oxygen generator double-layer silencer, which includes an outer silencer 1, an inner silencer 2 and a partition 3 with a hollow structure are arranged in the outer silencer 1, both the outer silencer 1 and the inner silencer 2 are in the form of an expansion cavity, a cavity 4 is arranged in the outer silencer 1, the partition 3 is located in the cavity 4, the partition 3 is in a hollow circular structure, an outer ring of the partition 3 is fixedly connected with an inner wall of the cavity 4, the outer ring and the inner ring of the partition 3 are connected through baffles which are spaced from each other, the thickness of the partition 3 is 2-3mm, four arc-shaped holes 31 with the same specification are formed in the partition 3, the inner ring of the partition 3 is fixedly connected with an outer ring of the inner silencer 2, an outer air inlet 13 and an outer air outlet 14 are respectively and fixedly installed at the top and the bottom of the outer silencer 1, the outer air inlet 13 and the outer air outlet 14 are both communicated with the cavity 4, when the sound wave is propagated forwards, the acoustic impedances in different cavities are different, and a part of sound is reflected back, so that the sound energy is attenuated.

In this embodiment, four arc holes 31 with the same specification are formed in the partition plate 3, the arc holes 31 ensure the overall length of the cavity of the outer muffler 1, and the outer muffler is not sealed into an upper cavity and a lower cavity due to the addition of the inner muffler 2, so that air flow and sound waves can pass through the outer muffler.

In the embodiment, the silencer 2 is provided with a cavity, the top and the bottom of the inner silencer 2 are respectively and fixedly provided with an inner air inlet 21 and an inner exhaust port 22, the inner air inlet 21 and the inner exhaust port 22 are both communicated with the cavity, the outer silencer 1 can also play a role in secondary silencing, the outer expansion cavity utilizes different acoustic impedances and utilizes the reflection silencing sound frequency f1 of sound waves; the expanding cavity of the inner silencer 2 has different acoustic impedance from that of the outer layer, sound frequency f2 is eliminated by utilizing the reflection of sound waves, so that the frequency of sound can be reduced, different sound frequencies are eliminated according to different lengths of the inner layer and the outer layer of the silencer, the length L1 of the outer layer eliminates the sound f1, the length L2 of the inner layer eliminates the sound f2, the arc-shaped hole 31 is opened to ensure the whole length of the cavity of the outer silencer 1, and the outer layer is not closed into an upper cavity and a lower cavity due to the addition of the inner silencer 2, namely, the sound waves can pass through the arc-shaped hole.

In this embodiment, the double-deck muffler is by outer muffler 1, interior muffler 2 and baffle 3 are constituteed, outer muffler 1 is an expansion chamber form, interior muffler 2 is an expansion chamber form too, outer air inlet 13 and outer gas outlet 14 of outer muffler 1 can not be on same water flat line, also can be on same water flat line, this can not influence the transmission of sound wave, baffle 3 is hollow form, it passes through to make things convenient for the sound wave, the sound wave is got into the back by outer air inlet 13, partly baffle 3 through the centre passes through outer expansion chamber from outer, discharge through outer gas outlet 13 again, partly rethread interior exhaust port 22 discharges after passing through the interior expansion chamber that inner muffler 2 formed.

The outer muffler 1 in this embodiment includes a cylindrical housing 12, and two arc covers 11 formed integrally with both ends of the cylindrical housing 12.

The maximum muffling frequency of a single expansion chamber muffler is determined by the length l of the expansion chamber, where f is 1_maxThe maximum noise elimination frequency of the expansion cavity silencer is determined by formula 1, wherein c is the sound velocity, l is the length of the expansion cavity, the longer the expansion cavity is, the lower the maximum noise elimination frequency is, the length of the expansion cavity of the outer layer is l1, the inner diameter is d1, the length of the expansion cavity of the inner layer silencer 2 is l2, and the inner diameter is d2, and the outer layer of the double-layer silencer can eliminate medium and low frequency noise f1_maxThe inner layer can eliminate medium-high frequency noise f2_max。

The above embodiments are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The double-layer silencer of the oxygen generator comprises an outer silencer (1), and is characterized in that an inner silencer (2) and a partition plate (3) with a hollow structure are arranged in the outer silencer, and the outer silencer (1) and the inner silencer (2) are both in an expansion cavity form; be equipped with cavity (4) in outer muffler (1), and baffle (3) are located cavity (4), baffle (3) are hollow circular structure, the inner wall fixed connection of the outer lane of baffle (3) and cavity (4), and the inner circle of baffle (3) and the outer lane fixed connection of interior muffler (2), and the outer lane and the inner circle of baffle (3) are connected through alternate baffle.

2. The double-layer silencer for the oxygen generator as claimed in claim 1, wherein the top and the bottom of the outer silencer (1) are respectively fixedly provided with an outer air inlet (13) and an outer air outlet (14), and the outer air inlet (13) and the outer air outlet (14) are both communicated with the chamber (4).

3. An oxygen generator double silencer according to claim 1, characterized in that the outer air inlet (13) and the outer air outlet (14) of the outer silencer (1) are on the same horizontal line.

4. An oxygen generator double silencer according to claim 1, characterized in that the outer air inlet (13) and the outer air outlet (14) of the outer silencer (1) are not on the same horizontal line.

5. The double-layer silencer for the oxygen generator as claimed in claim 1, wherein the inner silencer (2) is provided with a cavity, the top and the bottom of the inner silencer (2) are respectively fixedly provided with an inner air inlet (21) and an inner air outlet (22), and the inner air inlet (21) and the inner air outlet (22) are both communicated with the cavity.

6. An oxygen generator double muffler according to claim 1, wherein the outer muffler (1) comprises a cylindrical housing (12), and two arc-shaped covers (11) connected to both ends of the cylindrical housing (12).

7. An oxygen generator double-layer silencer according to claim 6, characterized in that the arc-shaped covers (11) are integrally formed with both ends of the cylindrical housing (12).

8. The double-deck silencer of claim 7, wherein said arc-shaped covers (11) are connected to both ends of the cylindrical housing (12) by injection molding.

9. An oxygen generator double silencer according to claim 1, characterized in that the thickness of the partition (3) is 2-3 mm.

10. The double-layer silencer of the oxygen generator as claimed in claim 1, wherein the partition plate (3) is provided with four arc-shaped holes (31) with the same specification.