Air inlet silencing box for VPSA oxygen generator

Abstract

The utility model discloses an air inlet silencing box for a VPSA oxygen generator, which comprises a silencing box body, one side of the silencing box body is provided with an air inlet interface, and the silencing box body is connected with an air outlet external interface; a silencing cavity channel A, a silencing cavity channel B, a silencing cavity channel C and a silencing cavity channel D are formed in the silencing box body, a one-way valve is arranged in the air inlet connector, the air inlet connector is communicated with the silencing cavity channel A through the one-way valve, the silencing cavity channel A is communicated with the silencing cavity channel B, the silencing cavity channel B is communicated with the silencing cavity channel C, the silencing cavity channel C is communicated with the silencing cavity channel D, and the silencing cavity channel D is communicated with the air outlet outer connector. Via holes are formed between the silencing A cavity channel and the silencing B cavity channel, between the silencing B cavity channel and the silencing C cavity channel and between the silencing C cavity channel and the silencing D cavity channel, and silencing cotton is installed on the inner wall of the silencing A cavity channel, the inner wall of the silencing B cavity channel, the inner wall of the silencing C cavity channel and the inner wall of the silencing D cavity channel. According to the utility model, the noise level of airflow entering the oxygen generator can be reduced, the airflow speed can be stably adjusted, and effective noise reduction is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oxygen making sound elimination equipment technical field, concretely relates to a kind of air intake sound elimination box for VPSA oxygen generator. BACKGROUND

[0002] With the development of oxygen making technology, VPSA (Vacuum Pressure Swing Adsorption) oxygen generator is widely used in medical, industrial and other fields due to its high efficiency, energy saving and other advantages. However, in practical application, VPSA oxygen generator will produce a lot of noise when working, mainly from the airflow noise generated in the air intake process and the vibration noise caused by the internal mechanical movement of the equipment. These noises not only affect the quietness of the surrounding environment, but also may cause hearing damage to the operators, reduce work efficiency, and in some cases (such as hospitals, laboratories), excessive noise level is unacceptable.

[0003] Traditional sound elimination equipment usually uses simple sound insulation materials or single chamber structure to reduce noise, but such design has many limitations: on the one hand, due to the lack of effective airflow path optimization, the noise reduction effect is limited; on the other hand, single layer sound insulation material is difficult to meet the processing needs of high intensity noise source. Therefore, there is an urgent need in the market for a new type of air intake sound elimination box for VPSA oxygen generator to effectively solve the above problems, so as to improve the working performance of VPSA oxygen generator and improve its use environment. SUMMARY

[0004] The utility model is just for the above problem, make up for the deficiency of prior art, provide a kind of air intake sound elimination box for VPSA oxygen generator.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An air intake sound elimination box for VPSA oxygen generator, comprising a sound elimination box body, an air inlet interface is provided on one side of the sound elimination box body, and an air outlet external interface is connected to the sound elimination box body below the air inlet interface; The sound elimination box body is provided with independent sound elimination A cavity, sound elimination B cavity, sound elimination C cavity and sound elimination D cavity respectively inside; A one-way valve is arranged in the air inlet interface, the air inlet interface is communicated with the sound elimination A cavity through the one-way valve, the sound elimination A cavity is communicated with the sound elimination B cavity, the sound elimination B cavity is communicated with the sound elimination C cavity, the sound elimination C cavity is communicated with the sound elimination D cavity, and the sound elimination D cavity is communicated with the air outlet external interface; The sound elimination A cavity, the sound elimination B cavity, the sound elimination C cavity and the sound elimination D cavity are all provided with through holes between the sound elimination A cavity and the sound elimination B cavity, between the sound elimination B cavity and the sound elimination C cavity, and between the sound elimination C cavity and the sound elimination D cavity; Sound elimination cotton is installed on the inner wall of the sound elimination A cavity, the sound elimination B cavity, the sound elimination C cavity and the sound elimination D cavity.

[0007] Further, the sound attenuation box is further provided with a first outer filter interface and a second outer filter interface, the first outer filter interface and the second outer filter interface are used for being connected with an air inlet filter barrel of the VPSA oxygen generator, the air inlet interface of the sound attenuation box is connected with the first outer filter interface in communication through a one-way valve, the first outer filter interface is sealingly connected with an air inlet of the air inlet filter barrel, and the second outer filter interface is sealingly connected with an air outlet of the air inlet filter barrel.

[0008] Further, the first outer filter interface and the second outer filter interface are peripherally provided with sealing end covers, and the air inlet and the air outlet of the air inlet filter barrel of the VPSA oxygen generator are sealingly connected with the first outer filter interface and the second outer filter interface of the sound attenuation box through the sealing end covers.

[0009] Further, a buffer cavity is arranged in the sound attenuation box in communication with the second outer filter interface, the buffer cavity is arranged adjacent to the sound attenuation A cavity, the sound attenuation C cavity and the sound attenuation D cavity and located above the sound attenuation D cavity, a three-way electromagnetic valve is fixedly arranged on the top surface of the sound attenuation box at the partition between the sound attenuation A cavity and the buffer cavity, and the buffer cavity and the sound attenuation A cavity are communicated through the three-way electromagnetic valve.

[0010] Further, the top of the sound attenuation box corresponding to the buffer cavity is provided with a second switching interface, the top of the sound attenuation box corresponding to the sound attenuation A cavity is provided with a first switching interface, the three interfaces of the three-way electromagnetic valve are a valve a interface, a valve b interface and a valve c interface, the valve a interface is sealingly connected with the second switching interface, and the valve b interface is sealingly connected with the first switching interface.

[0011] Further, the one-way valve is a duckbill valve.

[0012] Compared with the prior art, the VPSA oxygen generator air inlet sound attenuation box has the following beneficial effects:

[0013] The VPSA oxygen generator air inlet sound attenuation box has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the VPSA oxygen generator air inlet sound attenuation box.

[0015] Figure 2The utility model discloses a stereo structure schematic diagram no. 2 of the intake silencer box for VPSA oxygen generator.

[0016] Figure 3 The utility model discloses a stereo structure schematic diagram no. 2 of the intake silencer box for VPSA oxygen generator.

[0017] Figure 4 The utility model discloses a stereo structure schematic diagram no. 2 of the intake silencer box for VPSA oxygen generator.

[0018] Figure 5 The utility model discloses a stereo structure schematic diagram no. 2 of the intake silencer box for VPSA oxygen generator.

[0019] Marked in the drawing: 1 is the silencer box, 2 is three -way solenoid valve, 3 is the sealing end cover, 4 is the check valve, 5 is the air intake interface, 6 is the air outlet interface, 7 is the first outer filter interface, 8 is the second outer filter interface, 9 is the valve c interface, 10 is the silencer B cavity, 11 is the silencer A cavity, 12 is the silencer C cavity, 13 is the buffer cavity, 14 is the via hole, 15 is the silencer D cavity, 16 is the first switching interface, 17 is the second switching interface, 18 is the valve a interface, 19 is the valve b interface. Specific embodiments

[0020] The technical schemes in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of the utility model.

[0021] Reference Figures 1 to 5The utility model discloses a kind of VPSA oxygen generator air intake sound-absorbing box, including sound-absorbing box body 1, the sound-absorbing box body 1 one side is provided with air inlet 5, air outlet external interface 6 is connected on the sound-absorbing box body 1 below air inlet 5;The sound-absorbing box body 1 inside is separately provided with independent sound-absorbing A cavity 11, sound-absorbing B cavity 10, sound-absorbing C cavity 12, sound-absorbing D cavity 15;Wherein, sound-absorbing A cavity 11 is located the uppermost in the sound-absorbing box body 1, sound-absorbing B cavity 10, sound-absorbing C cavity 12, sound-absorbing D cavity 15 are located below sound-absorbing A cavity 11, sound-absorbing C cavity 12 and sound-absorbing D cavity 15 are adjacent;One-way valve 4 is provided in air inlet 5, one-way valve 4 uses duckbill valve, by the one-way valve 4 of being set, air inlet can not be backflow after entering sound-absorbing box body 1;Air inlet 5 is communicated with sound-absorbing A cavity 11 by one-way valve 4, sound-absorbing A cavity 11 is communicated with sound-absorbing B cavity 10, sound-absorbing B cavity 10 is communicated with sound-absorbing C cavity 12, sound-absorbing C cavity 12 is communicated with sound-absorbing D cavity 15, sound-absorbing D cavity 15 is communicated with air outlet external interface 6;Perforation 14 is provided between sound-absorbing A cavity 11 and sound-absorbing B cavity 10, between sound-absorbing B cavity 10 and sound-absorbing C cavity 12, between sound-absorbing C cavity 12 and sound-absorbing D cavity 15, and the sound-absorbing A cavity 11, sound-absorbing B cavity 10, sound-absorbing C cavity 12, sound-absorbing D cavity 15 between the sequentially communicated of being arranged realizes;Sound-absorbing cotton is mounted on the inner wall of sound-absorbing A cavity 11, sound-absorbing B cavity 10, sound-absorbing C cavity 12, sound-absorbing D cavity 15.

[0022] Wherein, the layout form between sound-absorbing A cavity 11, sound-absorbing B cavity 10, sound-absorbing C cavity 12, sound-absorbing D cavity 15 arranged inside sound-absorbing box body 1, can optimize the airflow path into sound-absorbing box body 1, reduce gas flow rate, to achieve the purpose of reducing noise;Meanwhile, sound-absorbing cotton arranged on sound-absorbing A cavity 11, sound-absorbing B cavity 10, sound-absorbing C cavity 12, sound-absorbing D cavity 15 can effectively absorb, reflect, interfere with sound wave, reduce noise intensity.

[0023] In another embodiment of the utility model, the sound attenuation box 1 is further provided with a first outer filter interface 7 and a second outer filter interface 8, the first outer filter interface 7 and the second outer filter interface 8 are used to be connected with the air inlet filter barrel of the VPSA oxygen generator, the air inlet interface 5 of the sound attenuation box 1 is connected with the first outer filter interface 7 through the one-way valve 4, the first outer filter interface 7 is sealingly connected with the air inlet of the air inlet filter barrel, and the second outer filter interface 8 is sealingly connected with the air outlet of the air inlet filter barrel, the first outer filter interface 7 and the second outer filter interface 8 are provided with a sealing end cover 3, the air inlet and the air outlet of the air inlet filter barrel of the VPSA oxygen generator are sealingly connected with the first outer filter interface 7 and the second outer filter interface 8 of the sound attenuation box 1 through the sealing end cover 3, the sound attenuation box 1 is provided with a buffer cavity 13 in communication with the second outer filter interface 8, the buffer cavity 13 is provided adjacent to the sound attenuation A cavity 11, the sound attenuation C cavity 12 and the sound attenuation D cavity 15 and located above the sound attenuation D cavity 15, a three-way electromagnetic valve 2 is fixedly arranged on the top surface of the sound attenuation box 1 at the separation position between the sound attenuation A cavity 11 and the buffer cavity 13, the buffer cavity 13 is communicated with the sound attenuation A cavity 11 through the three-way electromagnetic valve 2, the top of the sound attenuation box 1 corresponding to the buffer cavity 13 is provided with a second adapter interface 17, the top of the sound attenuation box 1 corresponding to the sound attenuation A cavity 11 is provided with a first adapter interface 16, the three interfaces of the three-way electromagnetic valve 2 are a valve a interface 18, a valve b interface 19 and a valve c interface 9, the valve a interface 18 is sealingly connected with the second adapter interface 17, and the valve b interface 19 is sealingly connected with the first adapter interface 16.

[0024] Through the above technical scheme, the air flow in the external environment enters the air inlet filter barrel through the one-way valve 4 in the air inlet interface 5, and after being filtered and cleaned by the air inlet filter barrel, it can return to the sound attenuation box 1, and then enter the sound attenuation A cavity 11 through the three-way electromagnetic valve 2, and finally flow out from the air outlet interface 6 to provide the positive pressure air inlet end of the compressor of the oxygen generator after sequentially reducing the noise through the sound attenuation B cavity 10, the sound attenuation C cavity 12 and the sound attenuation D cavity 15; during the air inlet sound attenuation and noise reduction process when the oxygen generator is normally working, the three-way electromagnetic valve 2 is controlled to be powered off, at this time, the valve a interface 18 and the valve b interface 19 are conductive, and the valve a interface 18 and the valve c interface 9 are not conductive, so that the buffer cavity 13 and the sound attenuation A cavity 11 are communicated. The air outlet interface 6 and the valve c interface 9 of the three-way electromagnetic valve 2 are both fast plug L-shaped joints, which facilitates the connection of the pipeline and the overall installation of the air inlet sound attenuation box on the oxygen generator; the air outlet interface 6 and the valve c interface 9 of the three-way electromagnetic valve 2 are used to be connected with the positive pressure air inlet end of the compressor.

[0025] In summary, the first outer filter interface 7 and the second outer filter interface 8 allow the sound attenuation box to be directly connected with the air inlet filter barrel of the VPSA oxygen generator, realize the whole chain optimization from air suction to purification to final use, and improve the operation efficiency of the whole oxygen generator system; the three-way electromagnetic valve 2 realizes the switching function between the buffer cavity 13 and the sound attenuation A cavity 11, can adjust the airflow path according to actual needs, adapts to the needs under different working conditions, and increases the flexibility of equipment use. The air inlet sound attenuation box for the VPSA oxygen generator provided by the utility model not only solves the problems existing in the traditional sound attenuation equipment, but also provides more silent and efficient working conditions for the oxygen generator.

[0026] The above-mentioned embodiments are only preferred embodiments of the utility model, and are not all embodiments, and the utility model can have other implementation manners, the above-mentioned embodiments are only used for explaining the utility model, and cannot be considered for limiting the implementation range of the utility model, and do not constitute the limitation of the protection scope of the utility model, and there are many ideas, methods and ways for realizing the technical scheme, it should be pointed out that under the premise of not departing from the structural principle of the utility model, all other related embodiments obtained by the person skilled in the art without making the utility model creative labor, or the technical scheme formed by using equivalent replacement or equivalent transformation, all fall within the protection scope of the utility model claims.

[0027] In addition, although some specific terms are used in the specification, these terms are only for the convenience of explaining the utility model and do not constitute any limitation on the utility model.

Claims

1. A sound attenuation box for a VPSA oxygen generator, characterized in that: The sound attenuation box comprises a sound attenuation box body provided with an air inlet interface on one side, and an air outlet external interface connected to the lower part of the sound attenuation box body; the sound attenuation box body is internally provided with independent sound attenuation A, B, C and D channels; a one-way valve is arranged in the air inlet interface; the air inlet interface is communicated with the sound attenuation A channel through the one-way valve; the sound attenuation A channel is communicated with the sound attenuation B channel; the sound attenuation B channel is communicated with the sound attenuation C channel; the sound attenuation C channel is communicated with the sound attenuation D channel; the sound attenuation D channel is communicated with the air outlet external interface; a through hole is arranged between the sound attenuation A channel and the sound attenuation B channel, between the sound attenuation B channel and the sound attenuation C channel, and between the sound attenuation C channel and the sound attenuation D channel; sound attenuation cotton is arranged on the inner walls of the sound attenuation A, B, C and D channels.

2. The gas inlet silencer box for VPSA oxygen generator according to claim 1, characterized in that: The sound attenuation box body is further provided with a first external filter interface and a second external filter interface, which are used to be connected with an air inlet filter barrel of a VPSA oxygen generator; the air inlet interface of the sound attenuation box body is communicated with the first external filter interface through the one-way valve; the first external filter interface is sealingly connected with an air inlet port of the air inlet filter barrel; and the second external filter interface is sealingly connected with an air outlet port of the air inlet filter barrel.

3. The gas inlet silencer box for VPSA oxygen generator according to claim 2, characterized in that: The first external filter interface and the second external filter interface are provided with a sealing end cover; the air inlet port and the air outlet port of the air inlet filter barrel of the VPSA oxygen generator are sealingly connected with the first external filter interface and the second external filter interface of the sound attenuation box body through the sealing end cover.

4. The gas inlet silencer box for VPSA oxygen generator according to claim 3, characterized in that: A buffer cavity is arranged in the sound attenuation box body communicated with the second external filter interface; the buffer cavity is arranged adjacent to the sound attenuation A, C and D channels and above the sound attenuation D channel; a three-way electromagnetic valve is fixedly arranged on the top surface of the sound attenuation box body at the partition between the sound attenuation A channel and the buffer cavity; the buffer cavity is communicated with the sound attenuation A channel through the three-way electromagnetic valve.

5. The gas inlet silencer box for VPSA oxygen generator according to claim 4, characterized in that: A second adapter interface is arranged on the top of the sound attenuation box body corresponding to the buffer cavity; a first adapter interface is arranged on the top of the sound attenuation box body corresponding to the sound attenuation A channel; the three interfaces of the three-way electromagnetic valve are a valve a interface, a valve b interface and a valve c interface; the valve a interface is sealingly connected with the second adapter interface; and the valve b interface is sealingly connected with the first adapter interface.

6. The gas inlet silencer box for VPSA oxygen generator according to claim 1, characterized in that: The one-way valve is a duckbill valve.

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