Household oxygen generator with noise reduction function

Abstract

The invention discloses a household oxygen generator with a noise reduction function, and relates to the field of household oxygen delivery equipment, the household oxygen generator comprises a shell, an air pressure medical oxygen generation assembly is arranged in the shell, the household oxygen generator further comprises a silencing box, the air inlet end of the silencing box is connected with a nitrogen discharge pipeline of the air pressure oxygen generation assembly, and the interior of the silencing box is of a gradual flaring structure; the sectional area of one end connected with the nitrogen discharge pipeline is smaller than that of the other end, and flow blocking cotton strips are attached to the inner walls of the silencing boxes and are of a wave-shaped structure. The silencing box is arranged in the shell, the gas flow speed is gradually reduced through the gradual flaring structure arranged in the silencing box, meanwhile, vibration generated in the gas flowing process is reduced, and noise generated in the nitrogen discharging process is reduced.

Description

Technical Field

[0001] This invention relates to the field of home oxygen delivery equipment, specifically a home oxygen generator with noise reduction function. Background Technology

[0002] A home oxygen concentrator is a device that separates oxygen from the air through physical or chemical methods and provides it directly to patients with hypoxia. It has become an important tool for home oxygen therapy and health management. Its core working principle is to use the difference in the gas adsorption capacity of zeolite molecular sieves to achieve the separation of oxygen and nitrogen through pressure swing adsorption technology.

[0003] Chinese Patent Announcement CN116253293B discloses an oxygen generator with noise reduction function, including a housing. The housing includes a base and a cover, which are detachably connected to the base. A noise reduction assembly, a compressor, and an integrated absorber are arranged on top of the base. The noise reduction assembly includes sound-absorbing cotton, a 3R intake and exhaust silencer, a secondary silencer, and a nitrogen exhaust silencer. The sound-absorbing cotton is tightly attached to the inner wall of the cover. The nitrogen exhaust silencer is mounted on the base and communicates with the integrated absorber, the secondary silencer, and the 3R intake and exhaust silencer. The 3R intake and exhaust silencer is detachably connected to the cover and communicates with the compressor. A pad is detachably connected to one side of the base, and a support platform is fixedly connected to the other side of the base. The compressor is detachably connected to the pad, and the integrated absorber is connected to the support platform. The support platform is detachably connected; the oxygen concentrator also includes a vibration damper, which includes a first mounting foot, a vibration damping spring, a support column, and a second mounting foot. The first mounting foot is detachably connected to the compressor, the vibration damping spring is fixedly connected to the first mounting foot and the second mounting foot respectively, the second mounting foot is detachably connected to the pad, and the support column is set inside the vibration damping spring; the noise reduction assembly also includes a noise reduction plate, the support column abuts against the noise reduction plate and can drive the noise reduction plate to swing up and down, the noise reduction plate is made of elastic material, the noise reduction plate is located between the base and the pad, the noise reduction plate includes a transmission rod, a connecting plate and several noise reduction plates, the lower ends of both sides of the noise reduction plates are fixedly connected to the connecting plate, the upper ends of both sides of the noise reduction plates are fixedly connected to the transmission rod, and noise reduction holes are opened on the noise reduction plates; the vibration damper also includes a soft rubber sleeve, which is fitted on the end of the support column near the base.

[0004] Regarding the aforementioned technologies, existing home oxygen concentrators mainly rely on compressor vibration damping mounts to reduce compressor vibration during operation, and utilize built-in layered sound-absorbing plates to reduce noise during nitrogen discharge. In actual use, the noise during nitrogen discharge mainly comes from the high-speed airflow from the nozzle. Although the sound-absorbing plate structure can slow down the flow speed of nitrogen, the high-speed flow of nitrogen at the point where it enters the sound-absorbing plate can still easily cause considerable noise. At the same time, while adding sound-absorbing cotton to the outside of the compressor can effectively reduce the noise during compressor operation, it will seriously reduce the compressor's heat dissipation efficiency, which can easily affect the compressor's lifespan during long-term operation.

[0005] In conclusion, existing home oxygen concentrators are unable to effectively suppress nitrogen emission and the noise generated by the compressor during operation. Summary of the Invention

[0006] Therefore, the purpose of this invention is to provide a home oxygen concentrator with noise reduction function to solve the technical problem that existing home oxygen concentrators are unable to effectively suppress noise.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a home oxygen concentrator with noise reduction function, comprising a housing, wherein an air compression oxygenation assembly is disposed within the housing, and a silencer box, wherein the air inlet end of the silencer box is connected to the nitrogen exhaust pipe of the air compression oxygenation assembly, the silencer box has a gradually expanding structure, and the cross-sectional area of ​​one end connected to the nitrogen exhaust pipe is smaller than that of the other end, and the inner wall of the silencer box is fitted with flow-blocking cotton strips, wherein the flow-blocking cotton strips have a wavy structure.

[0008] By adopting the above technical solution, a silencer box is set inside the shell. The gas flow rate is gradually reduced by the gradually expanding structure set inside the silencer box, and the vibration generated during the gas flow is reduced at the same time, which effectively reduces the noise generated during the nitrogen discharge process.

[0009] The present invention is further configured such that a shock-absorbing plate is connected to the bottom surface of the housing, a mounting plate is connected to the bottom surface of the shock-absorbing plate, a support frame is fixedly connected to both sides of the mounting plate, and a support leg is fixedly connected to both ends of the support frame.

[0010] Preferably, a shock-absorbing plate is used to separate the shell from the shell's supporting structure, so that the shell's vibrations are not directly transmitted to the ground.

[0011] The present invention is further configured such that a compressor is disposed inside the housing, and a mounting bracket is disposed around the compressor, the mounting bracket being covered with sound-absorbing cotton.

[0012] Preferably, the mounting bracket covered with sound-absorbing cotton can further reduce the noise generated when the compressor is working.

[0013] The present invention is further configured such that the air inlet end of the silencer box is provided with a nitrogen port, and the air outlet end is provided with a nitrogen outlet, wherein the nitrogen outlet of the silencer box extends into the mounting bracket and faces the compressor.

[0014] Preferably, the airflow generated during the nitrogen discharge process is used to dissipate heat from the compressor, thus preventing the compressor from overheating due to prolonged operation in a sealed environment.

[0015] The present invention is further configured such that heat storage fins for absorbing heat are attached to the side wall of the compressor.

[0016] Preferably, the heat storage plate can absorb some of the heat generated by the compressor during operation while the nitrogen is not discharged.

[0017] The invention is further configured such that a folded cotton strip is provided inside the silencing box between the flow-blocking cotton strip and the nitrogen outlet, and the folded cotton strip is permeable to gas.

[0018] Preferably, folding the cotton strip can further reduce the noise generated during nitrogen exhaust.

[0019] The invention is further configured such that the housing has an exhaust port at the bottom of the mounting bracket, the exhaust port is connected to an exhaust box, the side wall of the exhaust box is wrapped with sound-absorbing cotton, and a vent hole leading to the outside is provided along the circumference.

[0020] Preferably, the noise generated by the compressor is prevented from being directly transmitted out of the housing through the exhaust port.

[0021] The invention is further configured such that an inner groove is provided on the bottom surface of the housing, the depth of the inner groove is equal to the thickness of the shock-absorbing plate, and the mounting plate and support frame do not contact the housing.

[0022] Preferably, this design ensures that the casing does not directly contact the ground while improving the aesthetics of the oxygen generator.

[0023] The invention is further configured such that a primary filter is installed on a mounting bracket inside the housing, the primary filter is connected to a secondary filter disposed on the inner wall of the mounting bracket, and the secondary filter is connected to a compressor.

[0024] Preferably, the air is filtered through multiple stages before entering the compressor. The multi-stage air filter can also reduce the noise of the airflow at the air compressor intake.

[0025] The invention is further configured such that the exhaust end of the compressor is connected to a cooling pipe disposed at the top of the mounting bracket, and the cooling pipe has a spiral structure.

[0026] Preferably, the cooling pipe is located outside the sealed cavity formed by the mounting bracket, which can reduce the temperature of the air during the air compression process.

[0027] In summary, the present invention has the following main beneficial effects: This invention reduces noise generated during nitrogen discharge by setting a silencer box inside the housing and using the gradually expanding structure inside the silencer box to gradually reduce the gas flow rate and at the same time reduce the vibration generated during the gas flow.

[0028] This invention utilizes a shock-absorbing plate at the bottom of the housing and a support structure at the bottom of the shock-absorbing plate that contacts the ground. The shock-absorbing plate absorbs the vibration of the housing during operation, preventing the vibration from being directly transmitted to the support feet. This reduces the noise generated by the collision between the support structure and the ground when the housing vibrates. Especially when the ground is uneven, the two diagonally opposite support legs of the housing do not land at the same time, and the vibration of the housing cannot be directly transmitted to the support feet, further reducing the noise emitted by the oxygen concentrator during operation.

[0029] This invention places the compressor inside a cavity wrapped with sound-absorbing cotton, with the outlet of the silencer box facing the compressor inside the cavity. The airflow generated when nitrogen is discharged is used to cool the compressor, thereby further reducing the noise generated by the compressor while ensuring that the compressor can work normally.

[0030] This invention provides an upwardly recessed groove structure at the bottom of the housing, into which the shock-absorbing plate is installed. This provides sufficient installation thickness for the shock-absorbing plate, allowing for the selection of a model with adequate thickness, while also ensuring the aesthetics of the oxygen generator. Attached Figure Description

[0031] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the present invention; Figure 3 This is a perspective view of the housing of the present invention in the open state; Figure 4 This is a schematic diagram of the internal structure of the housing of the present invention; Figure 5 This is a schematic diagram of the internal structure of the housing from another perspective of the present invention; Figure 6 This is a schematic diagram of the longitudinal cross-section of the silencer box of the present invention; Figure 7 This is a schematic diagram of the transverse cross-section of the silencer box of the present invention; Figure 8 This is a schematic diagram of the internal structure of the exhaust box of the present invention.

[0032] Explanation of reference numerals in the attached figures: 1. Housing; 101. Inner groove; 102. Air inlet; 103. Exhaust outlet; 104. Oxygen inlet; 2. Mounting bracket; 3. Primary filter; 4. Secondary filter; 5. Compressor; 6. Cooling pipe; 7. Compression tank; 8. Silencer box; 801. Nitrogen interface; 802. Nitrogen outlet; 803. Flow-blocking cotton strip; 804. Folded cotton strip; 9. Exhaust box; 901. Vent hole; 10. Shock-absorbing plate; 11. Mounting plate; 12. Support frame; 13. Support leg; 14. Heat storage plate. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] The embodiments of the present invention will now be described.

[0035] First embodiment: Please refer to a home oxygen concentrator with noise reduction function. Figures 1-8 The device includes a housing 1, and an air compression oxygen assembly is provided inside the housing 1. Specifically, the air compression oxygen assembly is a mature solution in the prior art. This application does not improve how to compress air to produce oxygen, and its specific working principle will not be described here.

[0036] Specifically, a primary filter 3 is installed on the mounting bracket 2 inside the housing 1. The primary filter 3 is connected to a secondary filter 4 located on the inner wall of the mounting bracket 2. The secondary filter 4 is connected to the compressor 5. Air enters the compressor after passing through multiple stages of filtration. The multi-stage air filtration can also reduce the airflow noise at the air compressor intake end. Furthermore, the exhaust end of the compressor 5 is connected to a cooling pipe 6 located at the top of the mounting bracket 2. The cooling pipe 6 has a spiral structure and is located outside the sealed cavity formed by the mounting bracket 2. It can reduce the air temperature during the air compression process. When the compressor 5 is working, the outside air entering the housing 1 will carry away the heat conducted by the cooling pipe 6.

[0037] It also includes a silencer box 8, the air inlet of which is connected to the nitrogen exhaust pipe of the compressed air oxygen assembly. The silencer box 8 has a gradually expanding structure, and the cross-sectional area of ​​the end connected to the nitrogen exhaust pipe is smaller than that of the other end. The inner wall of the silencer box 8 is fitted with flow-blocking cotton strips 803, which have a wavy structure.

[0038] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-5 The bottom surface of the housing 1 is connected to a shock-absorbing plate 10. Specifically, the shock-absorbing plate 10 can be made of a single material such as rubber, or it can be made of a composite of multiple shock-absorbing materials. In this embodiment, the shock-absorbing plate 10 specifically adopts a sandwich structure of pine wood, damping film, and pine wood, which can improve the stability of the connection of the shock-absorbing plate 10 while ensuring the shock absorption performance. The bottom surface of the shock-absorbing plate 10 is connected to a mounting plate 11. Both sides of the mounting plate 11 are fixedly connected to support frames 12, and both ends of the support frames 12 are fixedly connected to legs 13. The shock-absorbing plate 10 separates the housing 1 from the support structure of the housing 1, so that the vibration of the housing 1 will not be directly transmitted to the ground.

[0039] Furthermore, a compressor 5 is installed inside the housing 1, and a mounting bracket 2 is arranged around the compressor 5. The compressor 5 is connected to the housing 1 by a spring damping seat. The spring damping seat can significantly reduce the vibration transmitted to the housing 1 when the compressor 5 is working. The mounting bracket 2 is covered with sound-absorbing cotton, so that the location of the compressor 5 forms an independent soundproof chamber. The mounting bracket 2 covered with sound-absorbing cotton can further reduce the noise generated by the compressor 5 when it is working.

[0040] Second embodiment: Please refer to a home oxygen concentrator with noise reduction function. Figures 1-8 Based on the first embodiment, the difference from the first embodiment is that the air inlet end of the silencer box 8 is provided with a nitrogen port 801 and the air outlet end is provided with a nitrogen outlet 802. The nitrogen outlet 802 of the silencer box 8 extends into the mounting bracket 2 and faces the compressor 5. The airflow generated during the nitrogen discharge process is used to dissipate heat from the compressor 5, so as to avoid the compressor 5 from overheating due to long-term operation in a closed environment.

[0041] Furthermore, during the oxygen production process, since the compressor 5 operates almost continuously while nitrogen discharge is intermittent, heat storage plates 14 are attached to the side wall of the compressor 5 to absorb heat. The heat storage plates 14 can absorb some of the heat generated by the compressor 5 during operation while nitrogen is not discharged, thus preventing the compressor 5 from operating at excessively high temperatures.

[0042] For details regarding the above embodiments, please refer to [link / reference]. Figures 3-7 The silencing box 8 contains a folded cotton strip 804 between the flow-blocking cotton strip 803 and the nitrogen outlet 802. The folded cotton strip 804 allows gas to pass through and further reduces the noise generated during nitrogen discharge. The folded cotton strip 804 also impedes the flow of nitrogen. After entering the silencing box 8, the nitrogen pressure between the folded cotton strip 804 and the flow-blocking cotton strip 803 will increase due to the resistance of the folded cotton strip 804, reducing the pressure change of nitrogen flowing out of the nitrogen interface 801 and prolonging the nitrogen discharge time, thereby further reducing the noise generated during nitrogen discharge.

[0043] Third embodiment: Please refer to a home oxygen concentrator with noise reduction function. Figures 1-8 Based on the second embodiment, the difference from the second embodiment is that the housing 1 is provided with an exhaust port 103 at the bottom of the mounting bracket 2. The exhaust port 103 is connected to an exhaust box 9. The side wall of the exhaust box 9 is wrapped with sound-absorbing cotton and has a vent hole 901 in the circumferential direction to the outside, so as to prevent the noise generated by the compressor 5 from being directly transmitted out of the housing 1 through the exhaust port 103.

[0044] Furthermore, an inner groove 101 is provided on the bottom surface of the housing 1, the depth of which is equal to the thickness of the shock-absorbing plate 10. The mounting plate 11 and the support frame 12 do not contact the housing 1, thus preventing the housing 1 from contacting the mounting plate 11 or the support frame 12 when it vibrates slightly, thereby avoiding noise. This ensures that the housing 1 does not directly contact the ground, while also improving the aesthetics of the oxygen generator.

[0045] In practical operation, the present invention works as follows: When the compressor 5 is working, air enters the housing 1 through the air inlet 102, is filtered by the primary filter 3 and the secondary filter 4, and the compressed air enters the compression tank 7 through the spiral cooling pipe 6. During the process of venting nitrogen in the compression tank 7, the high-pressure nitrogen flows to the silencer box 8 through the gas delivery pipeline, and flows from the nitrogen port 801 of the silencer box 8 to the folded cotton strip 804. During the flow, the cross-sectional area of ​​the gas flow gradually expands, and the flow rate is greatly reduced by the influence of the flow-blocking cotton strip 803. When the gas passes through the folded cotton strip 804, its flow rate has reached a level that is not easy to make noise. The airflow flowing out of the nitrogen outlet 802 flows downward, carrying away the heat of the compressor 5 and the heat storage plate 14, and then passes through the vent hole 901 provided on the exhaust box 9, and can be discharged to the outside through the exhaust port 103.

[0046] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A domestic oxygen generator with noise reduction function, characterized in that, The utility model relates to a medical oxygen production assembly with sound insulation function, which comprises the following parts: A shell (1) is internally provided with a medical oxygen production assembly with sound insulation function. The sound insulation box (8) is internally provided with a gradually expanding port structure, and the cross-sectional area of one end connected with the nitrogen exhaust pipeline is smaller than that of the other end.

2. The household oxygen generator with noise reduction function according to claim 1, characterized in that: The bottom surface of the shell (1) is connected with a damping plate (10), the bottom surface of the damping plate (10) is connected with a mounting plate (11), both sides of the mounting plate (11) are fixedly connected with support frames (12), and both ends of the support frames (12) are fixedly connected with supporting legs (13).

3. The home oxygen generator with noise reduction function according to claim 1, characterized in that: The shell (1) is internally provided with a compressor (5), and a mounting frame (2) is arranged around the compressor (5).

4. The home oxygen generator with noise reduction function according to claim 3, characterized in that: The sound insulation box (8) is internally provided with a gradually expanding port structure, and the cross-sectional area of one end connected with the nitrogen exhaust pipeline is smaller than that of the other end.

5. The home oxygen generator with noise reduction function according to claim 4, characterized in that: The side wall of the compressor (5) is attached with heat storage fins (14) for absorbing heat.

6. The home oxygen generator with noise reduction function according to claim 4, characterized in that: The sound insulation box (8) is internally provided with a gradually expanding port structure, and the cross-sectional area of one end connected with the nitrogen exhaust pipeline is smaller than that of the other end.

7. The home oxygen generator with noise reduction function according to claim 4, characterized in that: The bottom surface of the shell (1) is provided with an exhaust port (103) at the bottom end of the mounting frame (2), the exhaust port (103) is connected with an exhaust box (9), the side wall of the exhaust box (9) is wrapped with sound insulation cotton, and the exhaust box (9) is provided with air holes (901) leading to the outside along the ring direction.

8. The home oxygen generator with noise reduction function according to claim 2, characterized in that: The bottom surface of the shell (1) is provided with an inner groove (101) upward, the depth of the inner groove (101) is equal to the thickness of the damping plate (10), and the mounting plate (11) and the support frame (12) are not in contact with the shell (1).

9. The home oxygen generator with noise reduction function according to claim 3, characterized in that: The shell (1) is internally provided with a compressor (5), and a mounting frame (2) is arranged around the compressor (5).

10. The home oxygen generator with noise reduction function according to claim 9, characterized in that: The exhaust end of the compressor (5) is communicated with a cooling pipe (6) arranged at the top end of the mounting frame (2), and the cooling pipe (6) has a spiral structure.

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