Medical silencer

Abstract

A medical silencer is cylindrical on the whole, an air outlet is formed in one bottom face, an air inlet is formed in the other bottom face, and an outer shell of the medical silencer comprises two symmetrical shell bodies which are fixed together, namely the first shell body and the second shell body. The first shell and the second shell are each internally provided with four partition plates, namely a first partition plate, a second partition plate, a third partition plate and a fourth partition plate, and the four partition plates divide the space in the first shell into five channels, namely a first channel, a second channel, a third channel, a fourth channel and a fifth channel which are sequentially communicated. Compared with the prior art, the silencer has the technical effects that the silencer is provided with the two buffer chambers and the three silencing channels, so that a better silencing effect can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a medical silencer. Background Art

[0002] In the medical field, devices such as air extractors and air compressors are used, such as respiratory assistance devices.

[0003] Currently, there is noise in the ventilation pipe, and the effect of other silencers is not very good, which affects the treatment environment. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: how to design a medical silencer that can achieve a better silencing effect.

[0005] The technical solution of the utility model is specifically as follows:

[0006] A medical silencer, which is cylindrical as a whole. An air outlet is provided on one bottom surface, and an air inlet is provided on the other bottom surface. Its shell includes two symmetrically arranged shells fixed together: a first shell and a second shell. Four partitions are provided in both the first shell and the second shell: a first partition, a second partition, a third partition, and a fourth partition. These four partitions divide the space in the first shell into five sequentially connected channels: a first channel, a second channel, a third channel, a fourth channel, and a fifth channel. The first channel connected to the air outlet and the fifth channel connected to the air inlet are both buffer chambers, and the second channel, the third channel, and the fourth channel are all sound-absorbing channels. A plurality of baffle plates are provided in the sound-absorbing channels. The baffle plates are fixed on the partitions, and the baffle plates make the sound-absorbing channels in an S shape; the four partitions are in an M shape as a whole. Communication ports are provided between the first partition, the second partition, the third partition, the fourth partition and the shell: a first communication port, a second communication port, a third communication port, and a fourth communication port; the first communication port and the third communication port are in opposite directions to the second communication port and the fourth communication port, so that the overall shape of the three sound-absorbing channels is in an S shape.

[0007] The three sound-absorbing channels are trumpet-shaped, with the upstream end being the small-head end and the downstream end being the large-head end.

[0008] There are more than five baffle plates in the sound-absorbing channels.

[0009] Compared with the prior art, the technical effect of the utility model is that the utility model is provided with two buffer chambers and three sound-absorbing channels, and can achieve a better silencing effect. Brief Description of the Drawings

[0010] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0011] Figure 2 It is a top view schematic diagram of the first shell.

[0012] Figure 3 It is a top view schematic diagram of the partition board. Specific embodiments

[0013] The present utility model will be introduced in detail below in conjunction with the accompanying drawings and its specific embodiments.

[0014] As Figures 1-3 , a medical silencer, which is cylindrical as a whole. An air outlet 210 is provided on one bottom surface, and an air inlet 211 is provided on the other bottom surface. Its shell includes two symmetrically arranged shells fixed together: a first shell 100 and a second shell 200.

[0015] As Figures 1-2 , four partition boards are provided in both the first shell 100 and the second shell 200: a first partition board 121, a second partition board 122, a third partition board 123, and a fourth partition board 124. The four partition boards divide the space in the first shell 100 into five sequentially connected channels: a first channel 161, a second channel 162, a third channel 163, a fourth channel 164, and a fifth channel 165. The first channel 161 connected to the air outlet 210 and the fifth channel 165 connected to the air inlet 211 are both buffer chambers, and the second channel 162, the third channel 163, and the fourth channel 164 are all sound-absorbing channels. A plurality of baffle plates 180 are provided in the sound-absorbing channels. The baffle plates 180 are fixed on the partition boards, and the baffle plates 180 make the sound-absorbing channels in an S shape.

[0016] The four partition boards are in an M shape as a whole. Communication ports are provided between the first partition board 121, the second partition board 122, the third partition board 123, the fourth partition board 124 and the shell: a first communication port 171, a second communication port 172, a third communication port 173, and a fourth communication port 174.

[0017] The first communication port 171 and the third communication port 173 are in opposite directions to the second communication port 172 and the fourth communication port 174, making the overall shape of the three sound-absorbing channels in an S shape.

[0018] For better sound absorption, the three sound-absorbing channels are in a horn shape, with the upstream end being the small-head end and the downstream end being the large-head end.

[0019] Five or more baffle plates 180 are provided in the sound-absorbing channels.

[0020] Its working principle is:

[0021] Install it in the ventilation pipe, with the air outlet 210 connected to the downstream and the air inlet 211 connected to the upstream.

[0022] As Figures 1-3 , see the red arrow:

[0023] S1. The air flow enters the fifth channel 165 (buffer chamber) from the air inlet 211, and the air flow velocity becomes gentle for the first time.

[0024] S2. The air flow enters the fourth channel 164 (sound absorption channel) from the fifth channel 165 (buffer chamber), and the air flow undergoes the first sound absorption.

[0025] S3. The air flow enters the third channel 163 (sound absorption channel) from the fourth channel 164 (sound absorption channel), and the air flow undergoes the second sound absorption.

[0026] S4. The air flow enters the second channel 162 (sound absorption channel) from the third channel 163 (sound absorption channel), and the air flow undergoes the third sound absorption.

[0027] S5. The air flow enters the first channel 165 (buffer chamber) from the second channel 162 (sound absorption channel), and the air flow becomes gentle for the second time.

[0028] Features of this application:

[0029] Two buffer chambers and three sound absorption channels are designed, which can make the unstable air flow upstream become relatively stable and achieve a better sound absorption effect.

[0030] For other content, please refer to the prior art.

[0031] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the overall concept of the present invention, several changes and improvements can still be made, and these should also be regarded as the protection scope of the present invention.

Claims

1. A medical silencer, which is cylindrical in shape, has an air outlet (210) on one bottom surface and an air inlet (211) on the other bottom surface, and is characterized in that: The housing comprises two symmetrical shells fixed together: a first shell (100) and a second shell (200); Four partitions are provided in the first shell (100) and the second shell (200): a first partition (121), a second partition (122), a third partition (123) and a fourth partition (124); the four partitions divide the space in the first shell (100) into five channels that are connected in sequence: a first channel (161), a second channel (162), a third channel (163), a fourth channel (164) and a fifth channel (165); the first channel (161) connected to the air outlet (210) and the fifth channel (165) connected to the air inlet (211) are both buffer chambers; the second channel (162), the third channel (163) and the fourth channel (164) are all silencer channels; a plurality of blocking plates (180) are provided in the silencer channels; the blocking plates (180) are fixed on the partitions; the blocking plates (180) make the silencer channels S-shaped; The four partitions are in an M shape as a whole, and communication ports are provided between the first partition (121), the second partition (122), the third partition (123), the fourth partition (124) and the outer shell: a first communication port (171), a second communication port (172), a third communication port (173), and a fourth communication port (174); The first communication port (171), the third communication port (173) and the second communication port (172), the fourth communication port (174) are located in opposite directions, so that the three silencer channels are in an S-shape as a whole.

2. The medical silencer according to claim 1, characterized in that: The three silencer channels are trumpet-shaped, with the upstream end being a small head end and the downstream end being a large head end.

3. The medical silencer according to claim 2, characterized in that: More than five blocking plates (180) are arranged in the muffler channel.

Images