Nitrogen removal device of oxygen source and oxygen generation system

Abstract

The utility model relates to the technical field of medical care equipment, and discloses an oxygen source nitrogen removal device and oxygen generation system, including adsorption tower body, nitrogen removal cover and first gas guide tube, the adsorption tower body is equipped with nitrogen removal cabin and first nitrogen removal hole, the nitrogen removal cover is arranged towards the adsorption tower body opening, the nitrogen removal cover covers the first nitrogen removal hole, and the first gas guide tube is arranged on the adsorption tower body opening. The nitrogen discharging bin is arranged in the adsorption tower body and is sealed with the adsorption tower body through a sealing gasket to form a noise reduction cavity, the first nitrogen discharging hole is communicated with the nitrogen discharging bin and the noise reduction cavity, the nitrogen discharging cover is provided with a second nitrogen discharging hole communicated with the noise reduction cavity, and the first gas guide pipe is connected with the second nitrogen discharging hole. The nitrogen removal device of the oxygen source is smooth in nitrogen removal and capable of reducing nitrogen removal noise.

Description

Technical Field

[0001] The utility model relates to the technical field of healthcare equipment, in particular to a nitrogen discharging device for an oxygen source and an oxygen generation system. Background Art

[0002] An oxygen generator uses air as a raw material and obtains oxygen through pressure swing adsorption technology. During the operation of the oxygen generator, air is pressurized by a compressor, and a molecular sieve can adsorb nitrogen in the air. The unadsorbed oxygen is purified and then becomes high-purity oxygen. When the treatment device reaches a certain saturation level, the nitrogen adsorbed by the molecular sieve is flushed and discharged into the ambient atmosphere, and then oxygen is produced again by pressurization, and the whole process is cycled periodically.

[0003] However, the oxygen generation system will generate relatively large noise when discharging the nitrogen adsorbed by the molecular sieve tower, and insufficient nitrogen discharge will cause the delay in the oxygen production process of the oxygen generation system and the decrease in oxygen generation concentration.

[0004] Therefore, it is necessary to provide a nitrogen discharging device to reduce the noise of nitrogen discharge and at the same time make the nitrogen discharge more smoothly. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a nitrogen discharging device for an oxygen source, which can discharge nitrogen smoothly and reduce the nitrogen discharge noise.

[0006] To solve the above technical problem, the utility model provides a nitrogen discharging device for an oxygen source, including an adsorption tower body, a nitrogen discharging cover and a first air duct. The adsorption tower body is provided with a nitrogen discharging chamber and a first nitrogen discharging hole. The nitrogen discharging cover is arranged to face the adsorption tower body and covers the first nitrogen discharging hole. A sound insulation chamber is formed by sealing with the adsorption tower body through a sealing gasket. The first nitrogen discharging hole communicates the nitrogen discharging chamber with the sound insulation chamber. The nitrogen discharging cover is provided with a second nitrogen discharging hole communicating with the sound insulation chamber, and the first air duct is connected to the second nitrogen discharging hole.

[0007] As an improvement of the above scheme, the adsorption tower body includes a cylinder body, an upper cover and a lower cover respectively arranged at both ends of the cylinder body. The first nitrogen discharging hole is arranged on the cylinder body, and the nitrogen discharging cover is connected to the cylinder body.

[0008] As an improvement of the above scheme, the first nitrogen discharging hole and the second nitrogen discharging hole are arranged in a cross manner.

[0009] As an improvement of the above scheme, one end of the first air duct connected to the second nitrogen discharging hole extends into the sound insulation chamber.

[0010] As an improvement of the above scheme, the second nitrogen discharging holes are arranged in an array along a first direction, and the second nitrogen discharging holes are arranged in an array along the first direction.

[0011] As an improvement of the above solution, the ratio of the aperture diameter of the first nitrogen discharge hole to the inner diameter of the first gas guide pipe is 1 / 8 to 1 / 3.

[0012] As an improvement of the above solution, the silencing cavity is provided with a first side wall and a second side wall. The first side wall is provided with the first nitrogen discharge holes. The second side wall is arranged opposite to the first side wall. The distance from the end of the first gas guide pipe extending into the silencing cavity to the first side wall and the second side wall is equal.

[0013] As an improvement of the above solution, the first gas guide pipe is a silica gel pipe.

[0014] As an improvement of the above solution, a quick connector for connecting with a second gas guide pipe or a nitrogen collection tank is provided at the nitrogen outlet of the first gas guide pipe.

[0015] In addition, the present utility model further provides an oxygen generation system, which includes a compressor, a molecular sieve tower, a radiator and an air inlet pipe. The compressor is provided with an exhaust port. The molecular sieve tower is provided with the adsorption tower body. An air inlet is provided at one end of the adsorption tower body far from the first nitrogen discharge holes. One end of the air inlet pipe is connected to the exhaust port, and the other end passes through the radiator and then is connected to the air inlet.

[0016] Implementing the present utility model has the following beneficial effects:

[0017] The present utility model discloses a nitrogen discharge device for an oxygen source. By arranging a nitrogen discharge chamber and first nitrogen discharge holes in the adsorption tower body, and simultaneously arranging a nitrogen discharge cover covering the first nitrogen discharge holes, the nitrogen discharge cover is sealed with the adsorption tower body through a sealing gasket to form a silencing cavity. The nitrogen in the nitrogen discharge chamber enters the silencing cavity through the first nitrogen discharge holes, and finally is led out through the first gas guide pipe connected to the second nitrogen discharge holes. The silencing cavity and the first gas guide pipe both play a role in silencing the nitrogen, and a good silencing effect can be obtained without arranging sound-absorbing cotton in the silencing cavity, making the nitrogen discharge smoother and more sufficient, and ensuring the stability of the oxygen generation process and the oxygen generation effect;

[0018] In addition, the silencing cavity is directly arranged on the outer wall of the adsorption tower body, and it is not necessary to lead the nitrogen in the nitrogen discharge chamber to other components for silencing, so the structure is more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an exploded structural schematic diagram of an embodiment of a nitrogen discharge device for an oxygen source of the present utility model;

[0020] Figure 2 is a longitudinal sectional structural schematic diagram of the nitrogen discharge device for the oxygen source;

[0021] Figure 3 is a structural schematic diagram of an embodiment of an oxygen generation system of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] As Figure 1 and Figure 2 shown, an embodiment of a nitrogen discharge device for an oxygen source disclosed by the present utility model includes an adsorption tower body 1, a nitrogen discharge cover 2 and a first air duct 3. The adsorption tower body 1 is provided with a nitrogen discharge chamber 11 and a first nitrogen discharge hole 12. The nitrogen discharge cover 2 is arranged to open towards the adsorption tower body 1. The nitrogen discharge cover 2 covers the first nitrogen discharge hole 12 and forms a sound insulation chamber 5 in sealing connection with the adsorption tower body 1 through a sealing gasket 4. The first nitrogen discharge hole 12 communicates the nitrogen discharge chamber 11 with the sound insulation chamber 5. The nitrogen discharge cover 2 is provided with a second nitrogen discharge hole 21 communicating with the sound insulation chamber 5. The first air duct 3 is connected to the second nitrogen discharge hole 21.

[0024] In this embodiment, by providing the nitrogen discharge chamber 11 and the first nitrogen discharge hole 12 in the adsorption tower body 1, and at the same time providing the nitrogen discharge cover 2 covering the first nitrogen discharge hole 12, the nitrogen discharge cover 2 forms the sound insulation chamber 5 in sealing connection with the adsorption tower body 1 through the sealing gasket 4. Nitrogen in the nitrogen discharge chamber 11 enters the sound insulation chamber 5 through the first nitrogen discharge hole 12 and is finally discharged through the first air duct 3 connected to the second nitrogen discharge hole 21. Both the sound insulation chamber 5 and the first air duct 3 play a role in silencing nitrogen, and a good silencing effect can be obtained without setting sound-absorbing cotton in the sound insulation chamber 5, making the nitrogen discharge smoother and more sufficient, ensuring the stability of the oxygen production process and the oxygen production effect. In addition, the sound insulation chamber 5 is directly arranged on the outer wall of the adsorption tower body 1, and it is not necessary to discharge the nitrogen in the nitrogen discharge chamber 11 to other components for sound silencing, making the structure more compact.

[0025] Among them, the first air duct 3 of this embodiment is made of silica gel tube. Since the nitrogen discharged from the adsorption tower body 1 of the oxygen production system has high pressure and fast flow rate, using a silica gel tube for exhaust can further reduce the airflow sound discharged from the sound insulation chamber 5, and the noise reduction effect is obvious.

[0026] A quick connector 31 for connecting with a second air duct (not shown in the figure) or a nitrogen collection tank (not shown in the figure) is provided at the nitrogen outlet of the first air duct 3. The nitrogen generated by the entire oxygen production system can be discharged through the second air duct or collected through the nitrogen collection tank. In this embodiment, the air duct for discharging nitrogen in the sound insulation chamber 5 is arranged in sections. Among them, the first air duct 3 is made of silica gel tube. The first air duct 3 can be a low-cost exhaust duct such as a corrugated telescopic tube. The first air duct 3 and the second air duct exhaust in relay, reducing the material cost while helping to reduce noise.

[0027] Combined with Figure 3, the adsorption tower body 1 of this embodiment specifically includes a cylinder body 13, as well as an upper cover 14 and a lower cover 15 respectively provided at both ends of the cylinder body 13. A molecular sieve for adsorbing and discharging nitrogen is provided inside the cylinder body 13. The first nitrogen discharge hole 12 is provided at the bottom of the cylinder body 13, and the nitrogen discharge cover 2 is connected to the bottom of the cylinder body 13. In this way, the nitrogen discharge cover 2 and the first air duct 3 can be staggered from the air inlet pipe 6 and the oxygen discharge pipe (not shown in the figure) at the top of the adsorption tower body 1, which helps to make the structure of the entire adsorption tower body 1 more compact.

[0028] Among them, the nitrogen discharge cover 2 is connected to the side wall at the bottom of the cylinder body 13 by screws, which is convenient for disassembly, assembly and replacement of the sealing gasket 4.

[0029] The first nitrogen discharge hole 12 and the second nitrogen discharge hole 21 of this embodiment are preferably arranged in a cross pattern to delay the time for the air flow to pass through the sound absorption cavity 5, making the noise reduction effect of the sound absorption cavity 5 more significant.

[0030] The second nitrogen discharge holes 21 are arranged in an array along a first direction. The second nitrogen discharge holes 21 are arranged in an array along the first direction, so that the air flow flows through the sound absorption cavity 5 more evenly.

[0031] To further improve the sound absorption effect, in this embodiment, the ratio of the aperture of the first nitrogen discharge hole 12 to the inner diameter of the first air duct 3 is 1 / 8 to 1 / 3, and one end of the first air duct 3 connected to the second nitrogen discharge hole 21 extends into the sound absorption cavity 5. Among them, the sound absorption cavity 5 is provided with a first side wall and a second side wall. The first side wall is provided with the first nitrogen discharge hole 12. The second side wall is arranged opposite to the first side wall. The distance from the end of the first air duct 3 extending into the sound absorption cavity 5 to the first side wall and the second side wall is equal.

[0032] In addition, as Figure 3 shown, the present invention also provides an oxygen generation system, which includes a compressor 7, a molecular sieve tower, a radiator 8 and an air inlet pipe 6. The compressor 7 is provided with an exhaust port. The molecular sieve tower is provided with the adsorption tower body 1. One end of the adsorption tower body 1 away from the first nitrogen discharge hole 12 is provided with an air inlet. One end of the air inlet pipe 6 is connected to the exhaust port, and the other end passes through the radiator 8 and then is connected to the air inlet.

[0033] When the oxygen generation system discharges nitrogen, a good sound absorption effect can be obtained without setting sound absorption cotton in the sound absorption cavity 5, making the nitrogen discharge smoother and more sufficient, and ensuring the stability of the oxygen generation process and the oxygen generation effect.

[0034] The above-disclosed is only a preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A nitrogen removal device for an oxygen source, characterized in that: The invention comprises an adsorption tower body, a nitrogen exhaust cover and a first air guide pipe, wherein the adsorption tower body is provided with a nitrogen exhaust bin and a first nitrogen exhaust hole, the nitrogen exhaust cover is arranged toward the opening of the adsorption tower body, the nitrogen exhaust cover covers the first nitrogen exhaust hole, and is sealed with the adsorption tower body through a sealing gasket to form a silencer cavity, the first nitrogen exhaust hole connects the nitrogen exhaust bin and the silencer cavity, the nitrogen exhaust cover is provided with a second nitrogen exhaust hole communicated with the silencer cavity, and the first air guide pipe is connected with the second nitrogen exhaust hole.

2. The nitrogen exhaust device for an oxygen source according to claim 1, characterized in that: The adsorption tower body comprises a cylinder, and an upper cover and a lower cover respectively arranged at two ends of the cylinder, the first nitrogen discharge hole is arranged on the cylinder, and the nitrogen discharge cover is connected to the cylinder.

3. The nitrogen exhaust device for an oxygen source according to claim 1, characterized in that: The first row of nitrogen holes and the second row of nitrogen holes are arranged crosswise.

4. The nitrogen exhaust device for an oxygen source according to claim 1, characterized in that: One end of the first air guide pipe connected to the second nitrogen discharge hole extends into the muffler cavity.

5. The nitrogen exhaust device for an oxygen source according to claim 1, characterized in that: The second row of nitrogen holes is arranged in an array along a first direction, and the second row of nitrogen holes is arranged in an array along the first direction.

6. The nitrogen exhaust device for an oxygen source according to claim 1, characterized in that: The ratio of the aperture of the first nitrogen discharge hole to the inner diameter of the first air guide pipe is 1 / 8 to 1 / 3.

7. The nitrogen exhaust device for an oxygen source according to claim 4, characterized in that: The silencing chamber is provided with a first side wall and a second side wall, the first side wall is provided with the first nitrogen exhaust hole, the second side wall is arranged opposite to the first side wall, and the end of the first air guide pipe extending into the silencing chamber is equidistant from the first side wall and the second side wall.

8. The nitrogen exhaust device for an oxygen source according to claim 1, characterized in that: The first air guide tube is a silicone tube.

9. The nitrogen exhaust device for an oxygen source according to claim 8, characterized in that: The nitrogen outlet of the first air guide pipe is provided with a quick connector for connecting with the second air guide pipe or the nitrogen collection tank.

10. An oxygen production system using the nitrogen exhaust device of the oxygen source according to any one of claims 1 to 9, characterized in that: The invention comprises a compressor, a molecular sieve tower, a radiator and an air inlet pipe, wherein the compressor is provided with an exhaust port, the molecular sieve tower is provided with the adsorption tower body, an end of the adsorption tower body away from the first row of nitrogen holes is provided with an air inlet, one end of the air inlet pipe is connected with the exhaust port, and the other end is connected with the air inlet through the radiator.

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