A silent and noise-reducing oxygen concentrator

Abstract

The invention discloses a silent and noise-reducing oxygen generator, comprising an organic shell, a base is provided at the bottom of the shell, a molecular adsorption tower is provided on one side of the outside of the shell, a solenoid valve is provided at the upper end of the inside of the shell, a turbine fan is provided below the solenoid valve, a muffler is connected to the turbine fan, a muffler chamber is provided at the bottom of the base, a muffler plate is installed in the muffler chamber, a compressor is installed on the muffler plate through a spring assembly, a plurality of groups of mutually parallel partitions are provided at the bottom of the muffler plate, muffler holes are provided on the rear end plate surface of the partition, an air guide arc plate is provided on the front end relative to the outer side of the outermost partition, and an air guide plate is provided at the bottom of the muffler plate; the invention can effectively reduce the airflow sound and nitrogen exhaust noise of the device during oxygen production by taking in air from one side of the upper part of the shell, the airflow changes the exhaust airflow guide and disperses the airflow energy after passing through the muffler chamber and the muffler plate, thereby reducing the noise generated by the exhaust airflow.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen concentrators, and in particular to a silent and noise-reducing oxygen concentrator. Background Art

[0002] An oxygen concentrator is a type of machine that produces oxygen. Existing oxygen concentrators mainly utilize molecular sieve physical adsorption and desorption technology. Through physical principles and with a compressor as the power, nitrogen in the air can be adsorbed during pressurization, and the remaining unabsorbed oxygen is collected and becomes high-purity oxygen after purification. The molecular sieve discharges the adsorbed nitrogen into the ambient air during decompression, and can adsorb nitrogen and produce oxygen during the next pressurization. The whole process is a periodic dynamic cycle. This type of oxygen concentrator produces oxygen quickly and has a high oxygen concentration. It is suitable for oxygen therapy and oxygen health care for all kinds of people, and has low power consumption and high cost performance.

[0003] At present, multiple electrical components are used inside the oxygen concentrator. When the device is in operation, it has a weak structure and many accessories. Because it will vibrate during use, it will increase the operating noise of the device, thereby causing resonance with other components. In order to improve the stability of the use of electrical components and reduce the vibration amplitude, the firmness of the connection between the components will be strengthened. In addition, for the convenience of mobility, a mobile device will be installed at the lower end of the oxygen concentrator. When the mobile device is vibrated, the resonance amplitude will be aggravated, further increasing the noise. Molecular sieve oxygen concentrators have many advantages, but they will generate noise when working. This is caused by the product structure and working principle. It is generally composed of compressors, solenoid valves, control systems, mufflers and other devices. The air is compressed by the compressor and pressed into the molecular sieve cylinder through the solenoid valve. After separation, it is divided into two paths. Oxygen flows to the air storage cylinder, and nitrogen is discharged from the oxygen concentrator by the nitrogen exhaust device. Noise is generated when the compressor is working, when nitrogen is discharged, and when air is taken in. At present, it is still impossible to fundamentally eliminate noise. How to reduce noise is a common technical problem in the industry. The noise of oxygen concentrators is mainly generated by the vibration of the compressor. The usual practice is to add a shock-absorbing rubber pad to the bottom of the compressor and wrap it with sound insulation materials. These methods have certain limitations. If too much sound insulation material is wrapped, the product volume will increase accordingly, which is inconvenient to use and the manufacturing cost will increase, which will affect the heat dissipation effect of the compressor. If it is wrapped less, it will be difficult to reduce the noise. The existing oxygen concentrators are equipped with a diversion chamber at the bottom, and air enters from the diversion chamber. By taking in air from the bottom, the airflow flows upward to take away heat and slow down the speed of the airflow rising, reducing the vibration of the airflow to the whole oxygen concentrator to reduce the noise of the oxygen concentrator. This noise reduction method reduces noise by changing the airflow direction and speed, making the air intake method and product structure of the oxygen concentrator complex, and there are many small parts installed inside the oxygen concentrator, which brings more hidden dangers of resonance noise sources. Therefore, it is necessary to design a technical solution that can better solve this contradiction. Summary of the invention

[0004] The purpose of the present invention is to provide a silent and noise-reducing oxygen concentrator to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the present invention is implemented by the following technical means:

[0006] A silent and noise-reducing oxygen concentrator comprises an organic shell, a base is provided at the bottom of the shell, a molecular adsorption tower installed on the base is provided on one side of the outside of the shell, a solenoid valve is provided at the upper end of the interior of the shell, a turbine blower located on a mounting plate of the shell is provided below the solenoid valve, a muffler is connected to the turbine blower, a muffler chamber is provided at the bottom of the base, a muffler plate is installed in the muffler chamber, a compressor arranged inside the shell is installed on the muffler plate through a spring assembly, a plurality of groups of mutually parallel partitions are provided at the bottom of the muffler plate, a plurality of groups of evenly arranged muffler holes are provided on the rear end plate surface of the partition, an air guide arc plate is provided on the front end relative to the outer side surface of the outermost partition, and an air guide plate is provided at the bottom of the muffler plate.

[0007] Furthermore, the casing is assembled from a plurality of panels, and each component is wrapped by an all-metal composite structure, so that the device operates with low noise.

[0008] Furthermore, the silencer includes an air intake silencer and a nitrogen exhaust silencer. The number of groups of the air intake silencer and the nitrogen exhaust silencer is no less than two. The air intake silencers are connected by air intake connecting pipes, and the nitrogen exhaust silencers are connected by nitrogen exhaust connecting pipes. By setting up multiple groups of air intake silencers and nitrogen exhaust silencers, the airflow sound and nitrogen exhaust noise during oxygen production of the device can be effectively reduced.

[0009] Furthermore, two groups of mutually parallel partitions are provided at the bottom of the muffler plate, and a plurality of groups of evenly arranged muffler holes are provided on the rear end plate surface of the muffler plate, and the position of each muffler hole does not exceed 2 / 3 of the muffler plate.

[0010] Furthermore, an air guide arc plate is provided at 1 / 3 of the front end of the partition relative to the outer side surface, the front end of the air guide arc plate is arc-shaped, and the air guide arc plate is tangent to the inner side surface of the anechoic chamber.

[0011] Furthermore, the air guide plate is arranged at the center line of the bottom of the silencer plate, the length of the air guide plate does not exceed 2 / 3 of the silencer plate, and one end surface of the air guide plate is on the same plane as the same end surface of each partition plate.

[0012] Furthermore, the silencer plate includes a top plate matched with the base, a bottom plate matched with the silencer chamber is provided under the top plate, a groove for installing the compressor is provided between the top plate and the bottom plate, and air holes are provided on two opposite sides of the groove. Support columns for installing the spring assembly and located in the groove are provided at the four corners of the upper surface of the bottom plate, and two groups of mutually parallel partitions are provided on the lower surface of the bottom plate, one end of the two partitions is flush with one side of the bottom plate, and an air guide plate is provided between the two partitions, and one end face of the air guide plate is on the same plane with the same end face of each partition.

[0013] Furthermore, a tail wing guide plate is movably provided at the other end of the air guide plate, the tail wing guide plate has arc-shaped structures on both sides, and the tail wing guide plate is movably provided on the air guide plate through a connecting rod.

[0014] Furthermore, the upper and lower end surfaces of the tail end of the tail wing guide plate are arc-shaped surfaces, and the tail end of the tail wing guide plate is provided with a plurality of guide grooves, which can guide and disperse the airflow discharged from the oxygen generator and reduce the noise of the airflow.

[0015] Furthermore, two opposite sides of the air guide plate are provided with a plurality of groups of sound-absorbing quadrangular pyramids arranged in sequence, which can effectively reduce noise.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention can effectively reduce the airflow sound and nitrogen exhaust noise during oxygen production by taking in air from one side of the upper part of the casing and arranging a turbine fan and multiple groups of air intake silencers and nitrogen exhaust silencer structures. The airflow passes through the silencer chamber and the silencer plate, which changes the exhaust airflow direction and disperses the airflow energy, thereby reducing the noise generated by the exhaust airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the product structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the product structure and air intake guide of the present invention;

[0020] Figure 3 This is a schematic diagram of the axial structure of the product of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the muffler plate assembly of the product of the present invention;

[0022] Figure 5 This is a schematic diagram of the top view of the sound-absorbing plate assembly of the product of the present invention;

[0023] Figure 6 This is a schematic diagram of the main structure of the sound-absorbing board assembly of the product of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the muffler board assembly of the product of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the air guide plate of the product of the present invention;

[0026] Fig. 9 This is a schematic diagram of the structure of the air guide plate of the product of the present invention. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described below in conjunction with embodiments: Specific embodiments

[0029] This is one specific implementation of the present invention: see the accompanying drawings.

[0030] In the present embodiment, a silent and noise-reducing oxygen concentrator includes a casing 1, a base 2 is provided at the bottom of the casing 1, a molecular adsorption tower 3 installed on the base 2 is provided on one side of the outside of the casing 1, a solenoid valve 4 is provided at the upper end of the interior of the casing 1, a turbine fan 5 located on the casing mounting plate is provided below the solenoid valve 4, the turbine fan 5 is connected to a muffler 6, a muffler chamber 7 is provided at the bottom of the base 2, a muffler plate 8 is installed in the muffler chamber 7, a compressor 9 arranged inside the casing 1 is installed on the muffler plate 8 through a spring assembly, a plurality of groups of mutually parallel partitions 81 are provided at the bottom of the muffler plate 8, a plurality of groups of evenly arranged muffler holes 82 are provided on the rear end plate surface of the partition plate 81, an air guide arc plate 83 is provided on the front end relative to the outer side surface of the outermost partition plate 81, and an air guide plate 84 is provided at the bottom of the muffler plate 8.

[0031] See also Figure 1 The housing 1 is assembled from a plurality of panels, and each component is wrapped by a full metal composite structure, so that the device operates with low noise.

[0032] See also Figure 3 The silencer 6 includes an air intake silencer 61 and a nitrogen exhaust silencer 62. The number of groups of the air intake silencer 64 and the nitrogen exhaust silencer 62 is no less than two. The air intake silencers 61 are connected by air intake connecting pipes, and the nitrogen exhaust silencers 62 are connected by nitrogen exhaust connecting pipes. By setting multiple groups of air intake silencers and nitrogen exhaust silencers, the airflow sound and nitrogen exhaust noise during oxygen production of the device can be effectively reduced.

[0033] See also Figure 4-6The bottom of the muffler 8 is provided with two groups of mutually parallel partitions 81, and a plurality of groups of evenly arranged muffler holes 82 are opened on the rear end plate surface of the muffler 81, and the position of each muffler hole 82 does not exceed 2 / 3 of the muffler 81. The front end of the muffler 81 is provided with an air guide arc plate 83 at 1 / 3 of the outer side surface relative to the outer side surface, and the front end of the air guide arc plate 83 is arc-shaped, and the air guide arc plate 83 is tangent to the inner side surface of the muffler chamber 8. The air guide plate 84 is arranged at the center line position of the bottom of the muffler 8, and the length of the air guide plate 84 does not exceed 2 / 3 of the muffler 8, and one end surface of the air guide plate 84 is on the same plane with the same end surface of each partition 81.

[0034] See also Figure 4-7 The silencer plate 8 includes a top plate 85 matched with the base 2, and a bottom plate 86 matched with the silencer chamber 7 is provided under the top plate 85. A groove 87 for installing a compressor is provided between the top plate 85 and the bottom plate 86. Vent holes 88 are provided on two opposite sides of the groove 87. Support columns 89 for installing a spring assembly and located in the groove are provided at four corners of the upper surface of the bottom plate 86. Two groups of mutually parallel partitions 81 are provided on the lower surface of the bottom plate 86. One end of the two partitions 81 is flush with one side of the bottom plate 86. An air guide plate 84 is provided between the two partitions 81. One end face of the air guide plate 84 is on the same plane as the same end face of each partition 81.

[0035] See also Figure 8 The other end of the air guide plate 84 is movably provided with a tail wing guide plate 841, and the tail wing guide plate 841 has arc-shaped structures on both sides. The tail wing guide plate 841 is movably provided on the air guide plate 84 through a connecting rod.

[0036] See also Fig. 9 The upper and lower end surfaces of the tail end of the tail guide plate 841 are arc-shaped surfaces. The tail end of the tail guide plate 841 is provided with a plurality of guide grooves 842, which can guide and disperse the airflow discharged from the oxygen generator and reduce the noise of the airflow. The two opposite sides of the air guide plate 84 are provided with a plurality of groups of sound-absorbing quadrangular pyramids 843 arranged in sequence, which can effectively reduce the noise.

[0037] In a specific application of the device of the present invention, the exhaust gas flows through the silencer plate 8, which can effectively change the flow cross-sectional ratio of the exhaust gas flow through the vent hole 88, the silencer hole 82, and the air guide plate 84, and under the action of the air guide arc plate 83, a vortex is locally formed, which increases the energy loss of the exhaust gas flow and reduces the air flow velocity. Moreover, through the multiple groups of orderly arranged sound-absorbing quadrangular pyramids 843 on the air guide plate 84 and the active guide of the tail wing guide plate 841, the exhaust gas flow noise can be effectively reduced.

[0038] The specific embodiments disclosed in the present invention fall within the protection scope of the claims of the present invention, and are the specific lower-level implementation scope of the characteristic part of the present invention. The protection content of the specific embodiments is merely an explanation of the protection scope of the claims of the present invention. The protection scope of the present invention is not limited to the protection content of the specific embodiments, and the protection content of the specific embodiments should not be understood as a limitation on the protection scope of the claims of the present invention.

[0039] In addition, the present invention does not disclose relevant components in the specification and drawings, which does not hinder the understanding of the present invention by those skilled in the art. For example, the present invention includes a control device, a sensor is provided on the control panel, the control device is electrically connected to a compressor, a turbo blower, a five-way valve, a flow regulating valve, a sensor and other components, etc. Other conventional components of the present invention are not disclosed in the present invention, which does not hinder the understanding of the present invention by those skilled in the art.

[0040] The product structural connection relationships that fall within the protection scope of the present invention shall all fall within the protection content of the present invention; without departing from the protection essence of the present invention, conventional technical improvements are made to the structure of product components, such as the improvements made to part of the product structure in the specific embodiment of the present invention, which utilize changes in the emission and interference properties of the exhaust gas flow sound waves to reduce noise, which shall also fall within the protection essence of the present invention.

[0041] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that the described embodiments may be modified in various ways by a person skilled in the art without departing from the scope of the present invention. Therefore, the above description is illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

[0042] Unless otherwise defined, all academic and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0043] In case of conflict, the definitions in this specification shall prevail.

Claims

1. A silent and noise-reducing oxygen concentrator, comprising a housing, a base is provided at the bottom of the housing, a molecular adsorption tower mounted on the base is provided on one side of the housing, a solenoid valve is provided at the upper end of the housing, a turbine fan located on a housing mounting plate is provided below the solenoid valve, the turbine fan is connected to a muffler, a muffler chamber is provided at the bottom of the base, a muffler plate is installed in the muffler chamber, and the characteristics are: The silencer is installed with a compressor arranged inside the casing through a spring assembly, a plurality of groups of mutually parallel partitions are arranged at the bottom of the silencer, a plurality of groups of evenly arranged silencer holes are opened on the rear end plate surface of the partition, an air guide arc plate is arranged at the front end of the outermost partition relative to the outer side surface, the front end of the air guide arc plate is arc-shaped, the air guide arc plate is tangent to the inner side surface of the silencer chamber, an air guide plate is arranged at the bottom of the silencer, one end surface of the air guide plate is on the same plane with the same end surface of each partition, a tail wing guide plate is movably arranged at the other end of the air guide plate, the tail wing guide plate is a structure with arc-shaped sides, and the tail wing guide plate is movably arranged on the air guide plate through a connecting rod.

2. A silent and noise-reducing oxygen concentrator according to claim 1, characterized in that: The silencer includes an air intake silencer and a nitrogen exhaust silencer. The number of groups of the air intake silencer and the nitrogen exhaust silencer is no less than two. The air intake silencers are connected by an air intake connecting pipe, and the nitrogen exhaust silencers are connected by a nitrogen exhaust connecting pipe.

3. A silent and noise-reducing oxygen concentrator according to claim 1, characterized in that: The bottom of the muffler is provided with two groups of mutually parallel partitions, and the rear end plate surface of the partition is provided with a plurality of groups of evenly arranged muffler holes, and the position of each muffler hole does not exceed 2 / 3 of the partition.

4. A silent and noise-reducing oxygen concentrator according to claim 3, characterized in that: An air guide arc plate is provided at 1 / 3 of the front end of the partition relative to the outer side surface.

5. A silent and noise-reducing oxygen concentrator according to claim 4, characterized in that: The air guide plate is arranged at the center line of the bottom of the silencer plate, and the length of the air guide plate does not exceed 2 / 3 of the silencer plate.

6. The silent and noise-reducing oxygen concentrator according to claim 1, characterized in that: The silencer plate includes a top plate matched with the base, a bottom plate matched with the silencer chamber is arranged under the top plate, a groove for installing a compressor is matched between the top plate and the bottom plate, and air holes are opened on two opposite sides of the groove. Support columns for installing spring assemblies and located in the groove are arranged at the four corners on the upper surface of the bottom plate, and two groups of mutually parallel partitions are arranged on the lower surface of the bottom plate, one end of the two partitions is flush with one side of the bottom plate, and an air guide plate is arranged between the two partitions, and one end face of the air guide plate is on the same plane with the same end face of each partition.

7. The silent and noise-reducing oxygen concentrator according to claim 1, characterized in that: The upper and lower end surfaces of the tail end of the tail wing guide plate are arc-shaped surfaces, and the tail end of the tail wing guide plate is provided with a plurality of guide grooves, which can guide and disperse the airflow discharged from the oxygen generator and reduce the noise of the airflow.

8. The silent and noise-reducing oxygen concentrator according to claim 7, characterized in that: Two opposite sides of the air guide plate are provided with a plurality of groups of sound-absorbing quadrangular pyramids arranged in sequence.

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