Nitrogen discharge silencer for oxygen generator

Abstract

The utility model discloses a nitrogen discharge silencer for an oxygenerator, which comprises a shell, an air inlet pipe for nitrogen to enter is formed in the shell, a silencing part is filled in a pipeline in the extending direction of the air inlet pipe in the shell, and an air outlet hole for nitrogen to be discharged is arranged in the shell far away from the extending direction of the air inlet pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen generators, in particular to a nitrogen exhaust silencer for oxygen generators. Background Art

[0002] Medical oxygen concentrators can provide oxygen to patients, and can be used to treat cardiovascular and cerebrovascular diseases, respiratory system diseases, chronic obstructive pneumonia and other diseases, as well as to recover from hypoxia. Oxygen inhalation can improve the body's oxygen supply and achieve the purpose of nourishment and health care. It is suitable for people with varying degrees of physiological hypoxia, such as the elderly, those with poor physical fitness, pregnant women, and college entrance examination students. It can also eliminate fatigue and restore body functions after heavy physical or mental exertion.

[0003] The oxygen generator in the prior art utilizes molecular sieve physical adsorption and desorption technology to separate oxygen from the air for application and discharge nitrogen. The oxygen generator generates a large noise when discharging nitrogen. The existing oxygen generator is generally equipped with a nitrogen exhaust silencer. However, the traditional nitrogen exhaust silencer only uses a simple silencer cotton for silencer, which has a short service life, high noise, and low silencer effect. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes a nitrogen exhaust silencer for an oxygen generator.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A nitrogen exhaust silencer for an oxygen generator comprises a shell, wherein an air inlet pipe for nitrogen to enter is formed in the shell, a pipe in the shell in the direction in which the air inlet pipe extends is filled with a silencer, and an air outlet for nitrogen to be discharged is provided in the shell in the direction away from the air inlet pipe.

[0007] Preferably, the muffler includes a first muffler area disposed between the outlet end of the air inlet pipe and the end face of the shell, and a second muffler area disposed around the outer periphery of the air inlet pipe, the outlet end of the air inlet pipe abuts the first muffler area, and the first muffler area abuts the second muffler area. Through the above improvements, after the nitrogen is discharged from the outlet end of the air inlet pipe, it moves to the first muffler area, and the first muffler area decelerates and absorbs the noise of the nitrogen for the first time. When the nitrogen reaches the end face of the shell, it will rebound, and then pass through the first muffler area and the second muffler area again to decelerate and absorb the noise, which greatly reduces the noise of the nitrogen discharged from the air outlet.

[0008] Preferably, the first silencing area forms a first silencing channel, the first silencing area and the second silencing area form a second silencing channel, the nitrogen is guided by the air inlet pipe through the first silencing channel to the end surface of the shell, and the nitrogen is discharged from the air outlet through the second silencing channel. Through the above improvements, the nitrogen first passes through the first silencing channel for the first silencing, then rebounds from the shell, passes through the second silencing channel for the second silencing, and is finally discharged from the air outlet, which greatly reduces the noise of nitrogen discharge.

[0009] Preferably, the housing includes an air inlet seat and a cylinder connected to the air inlet seat, a silencer cavity is formed between the air inlet seat and the cylinder, the air inlet pipe is formed on the air inlet seat, the silencer is arranged in the cylinder, the air inlet pipe extends toward the cylinder, and the air outlet is arranged in the air inlet seat. Through the above improvements, nitrogen enters from the air inlet seat and is input into the cylinder through the air inlet pipe. After being silenced by the silencer, the nitrogen returns to the air inlet seat and is discharged from the air inlet hole in the air inlet seat, thereby reducing noise.

[0010] Preferably, a slot is provided at the bottom of the air inlet seat, a silencer is inserted into the slot, and the slot is connected to the air outlet. Through the above improvement, the exhausted nitrogen will be silenced again by the silencer, thereby further ensuring the silencer effect.

[0011] Preferably, a fixing frame is formed on the cylinder, the fixing frame is against the slot, and the sound-absorbing cotton is partially placed in the fixing frame, and an exhaust groove is formed on the fixing frame. Through the above improvements, the fixing frame can fix the sound-absorbing cotton to ensure the stability of the installation of the sound-absorbing cotton, and nitrogen can be discharged from the exhaust groove.

[0012] Preferably, an abutment platform is formed on the air inlet seat, and the abutment platform abuts against the muffler. Through the above improvements, when the nitrogen gas is discharged, it will contact with the abutment platform, so that the nitrogen gas speed can be further reduced to reduce noise.

[0013] Preferably, the air inlet end of the air inlet pipe is provided with a threaded section, and the threaded section is connected to a reversing solenoid valve, and the diameter of the air outlet is smaller than the diameter of the reversing solenoid valve. Through the above improvement, by reducing the air outlet, a reverse resistance pressure is added to the reversing solenoid valve, thereby reducing the switching noise of the reversing solenoid valve during the switching process.

[0014] Preferably, the outlet end of the intake pipe is formed with diffusion grooves, which are arranged at equal intervals along the outer circumference of the intake pipe. Through the above improvements, nitrogen can be diffused circumferentially through the diffusion grooves, reducing the impact force of nitrogen discharged from the intake pipe, thereby improving the effect of reducing noise.

[0015] Preferably, the air intake pipe is formed integrally on the air intake seat. Through the above improvements, not only the structural strength of the entire air intake seat can be improved, but also it is easier to assemble.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] Nitrogen enters the shell from the intake pipe, moves along the intake pipe, and is discharged from the outlet after being absorbed and decelerated by the silencer for multiple times, thereby greatly silencing the nitrogen and improving the user's quality of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0020] Figure 3 An exploded view of the entire utility model;

[0021] Figure 4 It is a structural schematic diagram of the cylinder of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the air intake seat of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the air intake seat of the utility model from another angle;

[0024] In the figure: 1, shell; 2, air inlet seat; 3, cylinder; 4, air inlet pipe; 5, muffler; 6, air outlet; 7, muffler cavity; 101, first muffler area; 102, second muffler area; 103, first muffler channel; 104, second muffler channel; 201, slot; 202, muffler cotton; 203, fixing frame; 204, exhaust groove; 301, threaded section; 302, reversing solenoid valve; 303, diffusion groove; 304, abutment platform; DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be understood that although the terms upper, middle, lower, top, end, etc. appear in this article to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for easy understanding, and are not used to define any direction or order limitation.

[0027] like Figure 1-6 As shown, a nitrogen exhaust silencer for an oxygen generator comprises a shell 1, wherein the shell 1 is formed with an air inlet pipe 4 for nitrogen to enter, a pipe in the shell 1 in the extension direction of the air inlet pipe 4 is filled with a silencer 5, and an air outlet 6 for nitrogen to be discharged is provided in the shell 1 in the extension direction away from the air inlet pipe 4.

[0028] When the silencer is in use, nitrogen enters the housing 1 from the air inlet pipe 4, moves along the air inlet pipe 4, and the silencer 5 absorbs and decelerates the nitrogen noise multiple times before discharging it from the air outlet 6, thereby greatly silencing the nitrogen and improving the user's quality of use.

[0029] like Figure 1-6 As shown, further explanation of the implementation method of the silencer 5 in this embodiment is provided, wherein the silencer 5 includes a first silencer area 101 arranged between the outlet end of the air inlet pipe 4 and the end face of the outer shell 1, and a second silencer area 102 arranged around the outer periphery of the air inlet pipe 4, the outlet end of the air inlet pipe abuts the first silencer area, and the first silencer area 101 and the second silencer area 102 abut, and the first silencer area 101 and the second silencer area 102 adopt through-hole sponge.

[0030] Specifically, after the nitrogen is discharged from the outlet end of the air intake pipe 4, it first moves to the first silencing area 101, and the first silencing area 101 performs a first deceleration and absorption of the noise of the nitrogen. When the nitrogen reaches the end surface of the outer shell 1, it will rebound, and the nitrogen will continue to move in the direction away from the air intake pipe 4, and then pass through the first silencing area 101 and the second silencing area 102 again to decelerate and absorb the noise, thereby greatly reducing the noise of the nitrogen discharged from the air outlet 6.

[0031] Furthermore, a first silencing channel 103 is formed in the first silencing area 101, and the first silencing area 101 and the second silencing area 102 form a second silencing channel 104, and the nitrogen is guided by the intake pipe 4 through the first silencing channel 103 to the end face of the outer shell 1, and the nitrogen is discharged from the outlet through the second silencing channel 104.

[0032] During the nitrogen discharge process, it first passes through the first silencer channel 103 for the first silencer, then bounces off the housing 1, passes through the second silencer channel 104 for the second silencer, and is finally discharged from the air outlet 6, which greatly reduces the noise of nitrogen discharge.

[0033] like Figure 1-6As shown, as a further explanation of the implementation method of the shell 1 in this embodiment, the shell 1 includes an air inlet seat 2, and a cylinder body 3 connected to the air inlet seat 2, a silencer cavity 7 is formed between the air inlet seat 2 and the cylinder body 3, an air inlet pipe 4 is formed on the air inlet seat 2, a silencer part 5 is arranged in the cylinder body 3, and the air inlet pipe 4 extends toward the cylinder body 3, and an air outlet 6 is arranged in the air inlet seat 2.

[0034] Specifically, after the air intake seat 2 is connected to the cylinder 3, the air intake pipe 4 is inserted into the silencer chamber 7, and the nitrogen enters from the air intake seat 2 and is input into the cylinder 3 through the air intake pipe 4. After being silenced by the silencer 5, the nitrogen returns to the air intake seat 2 and is discharged from the air intake hole in the air intake seat 2, thereby reducing noise.

[0035] Preferably, an abutment platform 304 is formed on the air intake seat 2, and the abutment platform 304 abuts against the muffler 5. When the nitrogen passes through the second muffler channel 104 for the second time, it will be impacted onto the abutment platform 304, thereby further decelerating and reducing noise.

[0036] In addition, a nitrogen exhaust area is formed in the air intake seat 2, and the air outlet 6 is arranged at the bottom of the nitrogen exhaust area, so that when the nitrogen moves laterally along the air intake pipe 4 in the cylinder 3, it enters the nitrogen exhaust area after noise reduction and deceleration, and is discharged vertically, thereby reducing the nitrogen flow rate again and greatly reducing the noise.

[0037] Furthermore, a slot 201 is provided at the bottom of the air inlet seat 2, and a silencer 202 is inserted into the slot 201, and the slot 201 is connected to the air outlet 6, and the exhausted nitrogen will be silenced again by the silencer 202, thereby further ensuring the silencer effect.

[0038] A fixing frame 203 is formed on the cylinder 3. When the cylinder 3 is connected to the air inlet seat 2, the fixing frame 203 abuts against the slot 201, and the silencer cotton 202 is partially inserted into the fixing frame 203. An exhaust groove 204 is formed on the fixing frame 203. The fixing frame 203 can fix the silencer cotton 202 to ensure the stability of the installation of the silencer cotton 202, and nitrogen can be discharged from the exhaust groove 204.

[0039] In addition, a threaded section 301 is provided at the air inlet end of the air inlet pipe 4 , and the threaded section 301 is connected to a reversing solenoid valve 302 . The threaded section 301 is connected to the reversing solenoid valve 302 , thereby improving the convenience of installing the reversing solenoid valve 302 .

[0040] In addition, the diameter of the air outlet 6 is smaller than that of the reversing solenoid valve 302. By reducing the diameter of the air outlet 6, a reverse resistance pressure is added to the reversing solenoid valve 302, thereby reducing the switching noise of the reversing solenoid valve 302 during the switching process.

[0041] Preferably, diffusion grooves 303 are formed at the outlet end of the intake pipe 4, and the diffusion grooves 303 are arranged at equal intervals along the outer circumference of the intake pipe 4. Nitrogen can diffuse circumferentially through the diffusion grooves 303, reducing the impact force of nitrogen discharged from the intake pipe 4, thereby improving the noise reduction effect.

[0042] Preferably, the air intake pipe 4 is formed integrally on the air intake seat 2, which not only improves the structural strength of the entire air intake seat 2 but also makes assembly easier.

[0043] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A nitrogen exhaust silencer for an oxygen generator, characterized in that: The invention comprises a shell (1), wherein an air inlet pipe (4) is formed inside the shell (1) for nitrogen to enter, a pipe in the extension direction of the air inlet pipe (4) inside the shell (1) is filled with a silencer (5), and an air outlet hole (6) for nitrogen to be discharged is provided in the extension direction away from the air inlet pipe (4) inside the shell (1).

2. A nitrogen exhaust silencer for an oxygen generator according to claim 1, characterized in that: The silencer (5) comprises a first silencer region (101) arranged between the outlet end of the air inlet pipe (4) and the end surface of the outer shell (1), and a second silencer region (102) arranged around the outer circumference of the air inlet pipe (4); the outlet end of the air inlet pipe (4) abuts against the first silencer region (101), and the first silencer region (101) and the second silencer region (102) abut against each other.

3. A nitrogen exhaust silencer for an oxygen generator according to claim 2, characterized in that: The first silencing area (101) forms a first silencing channel (103), the first silencing area (101) and the second silencing area (102) form a second silencing channel (104), the nitrogen is guided by the air inlet pipe (4) through the first silencing channel (103) to the end surface of the housing (1), and the nitrogen is discharged from the air outlet through the second silencing channel (104).

4. The nitrogen exhaust silencer for an oxygen generator according to claim 1, characterized in that: The housing (1) comprises an air intake seat (2) and a cylinder (3) connected to the air intake seat (2); a silencer cavity (7) is formed between the air intake seat (2) and the cylinder (3); the air intake pipe (4) is formed on the air intake seat (2); the silencer portion (5) is arranged in the cylinder (3); the air intake pipe (4) extends in the direction of the cylinder (3); and the air outlet hole (6) is arranged in the air intake seat (2).

5. A nitrogen exhaust silencer for an oxygen generator according to claim 4, characterized in that: The bottom of the air inlet seat (2) is provided with a slot (201), a sound-absorbing cotton (202) is inserted into the slot (201), and the slot (201) is connected to the air outlet (6).

6. A nitrogen exhaust silencer for an oxygen concentrator according to claim 5, characterized in that: A fixing frame (203) is formed on the cylinder (3), the fixing frame (203) abuts against the slot (201), and the sound-absorbing cotton (202) is partially inserted into the fixing frame (203), and an exhaust groove (204) is formed on the fixing frame (203).

7. The nitrogen exhaust silencer for an oxygen generator according to claim 4, characterized in that: An abutment platform (304) is formed on the air inlet seat (2), and the abutment platform (304) abuts against the muffler (5).

8. The nitrogen exhaust silencer for an oxygen generator according to claim 1, characterized in that: The air inlet end of the air inlet pipe (4) is provided with a threaded section (301), and the threaded section (301) is connected to a reversing electromagnetic valve (302), and the caliber of the air outlet hole (6) is smaller than the caliber of the reversing electromagnetic valve (302).

9. The nitrogen exhaust silencer for an oxygen generator according to claim 1, characterized in that: The air outlet end of the air inlet pipe (4) is formed with diffusion grooves (303), and the diffusion grooves (303) are arranged at equal intervals along the outer circumference of the air inlet pipe (4).

10. The nitrogen exhaust silencer for an oxygen generator according to claim 4, characterized in that: The air intake pipe (4) is integrally formed on the air intake seat (2).

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