Air inlet silencer of medical oxygen generator

Abstract

The utility model discloses a medical oxygen generator air inlet silencer, which comprises an upper shell and a lower shell, the upper shell and the lower shell are respectively provided with a first air guide port and a second air guide port, and the outer wall of the upper shell is provided with an insertion hole. According to the utility model, through the first air guide port and the second air guide port which are vertically distributed, the flow speed of air flow can be greatly reduced, and the flowing distance and path of the air flow can be prolonged, so that noise caused by turbulent flow and vortex when air enters the air inlet of the air compressor can be effectively prevented; noise generated during air flowing can be effectively absorbed through the sound absorbing materials in the upper shell and the lower shell, so that the silencing effect is further achieved; the upper shell body and the lower shell body are connected and fixed in a threaded connection mode, when the sound absorbing material needs to be replaced, the upper shell body and the lower shell body can be rapidly separated in a screwing mode, and therefore the sound absorbing material can be replaced more conveniently and rapidly.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen concentrator silencers, in particular to an air intake silencer for a medical oxygen concentrator. Background Art

[0002] A medical oxygen concentrator is a medical device that extracts oxygen from the air using technologies such as pressure swing adsorption. It is suitable for oxygen therapy and healthcare in both medical institutions and homes. When used, a medical oxygen concentrator typically requires a compressor to compress the air to increase the pressure, thereby providing power for the subsequent gas separation process. However, when high-speed air flows through the compressor's intake, it generates turbulence and eddies, which in turn generate noise, impacting the patient's experience and comfort. Therefore, silencing of the intake air is necessary.

[0003] There are some silencers on the market. For example, an oxygen concentrator intake silencer is disclosed on the China Patent Network, with the publication number CN212318392U. This silencer can achieve the silence of the oxygen concentrator intake, but there are some defects and deficiencies that need to be improved: (1) Some existing silencers have a relatively simple silencer method, and the noise reduction effect is not ideal, thus it is difficult to meet higher silencer requirements; (2) Some existing silencers are mostly integrated structures, which are difficult to disassemble, making it inconvenient to replace the internal sound-absorbing material. Therefore, in response to the above problems, the medical oxygen concentrator intake silencer provided by the present utility model is of great significance. Utility Model Content

[0004] The utility model provides an air intake silencer for a medical oxygen concentrator, which can greatly slow down the flow rate of the airflow through the vertically distributed first air guide port and the second air guide port, and extend the flow distance and path of the airflow, thereby effectively preventing the air from generating noise due to turbulence and eddy current when entering the air intake of the air compressor, and the sound-absorbing material inside the upper shell and the lower shell can effectively absorb the noise generated when the air flows, so as to further play a role in silencing; the upper shell and the lower shell are connected and fixed by a threaded connection, and when the sound-absorbing material needs to be replaced, the upper shell and the lower shell can be quickly separated by twisting, so that the replacement of the sound-absorbing material is more convenient and quick, thereby solving the problems in the background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model discloses an air intake silencer for a medical oxygen concentrator, comprising an upper shell and a lower shell, wherein a first air guide port and a second air guide port are respectively provided on the upper shell and the lower shell, and a plug hole is provided on the outer wall of the upper shell, wherein the first air guide port and the second air guide port are vertically distributed, and sound-absorbing material is provided inside the upper shell and the lower shell.

[0007] Furthermore, the cross-sections of the upper shell and the lower shell are both circular with equal diameters, and the bottom end surface of the upper shell and the top end surface of the lower shell are respectively provided with mutually matching grooves and protrusions, and the surfaces of the grooves and protrusions are respectively engraved with mutually matching internal threads and external threads.

[0008] Furthermore, the outer wall surfaces of the upper shell and the lower shell are both provided with a plurality of reinforcing ribs.

[0009] Furthermore, outer wall surfaces of the first air guide port and the second air guide port are both provided with hose barbs.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] (1) When in use, the air intake silencer of a medical oxygen concentrator in the present invention can significantly slow down the flow rate of the air flow through the vertically distributed first air guide port and the second air guide port, and extend the flow distance and path of the air flow, thereby effectively preventing the air from generating noise due to turbulence and eddy current when entering the air intake of the air compressor, and the sound-absorbing material inside the upper shell and the lower shell can effectively absorb the noise generated by the air flow, thereby further playing a role in silencer;

[0012] (2) When the air intake silencer of a medical oxygen concentrator in the utility model is in use, the upper shell and the lower shell are connected and fixed by a threaded connection. When the sound-absorbing material needs to be replaced, the upper shell and the lower shell can be quickly separated by twisting, thereby making the replacement of the sound-absorbing material more convenient and quick.

[0013] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is a front structural diagram of an air intake muffler for a medical oxygen concentrator according to the present utility model;

[0016] Figure 2 This is a schematic diagram of the back structure of an air intake silencer for a medical oxygen concentrator according to the present invention;

[0017] Figure 3 This is a top view of an air intake silencer for a medical oxygen concentrator according to the present invention;

[0018] Figure 4 In the embodiment 1 of the present utility model Figure 1 Cross-sectional view at AA of FIG;

[0019] Figure 5 For this utility model Figure 4 Enlarged view of point B;

[0020] Figure 6 This is a schematic structural diagram of the sound-absorbing material in Example 1 of the present utility model;

[0021] Figure 7 In the embodiment 2 of the present utility model Figure 1 Cross-sectional view at AA.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Upper shell; 2. Lower shell; 3. First air inlet; 4. Second air inlet; 5. Connecting hole; 6. Reinforcement rib; 7. Hose hook; 8. Sound-absorbing material. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that terms such as "relative", "one end", "inside", "lateral", "end", "two ends", "both sides", "front", "one end face", "the other end face" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] Example 1:

[0027] See also Figure 1-6As shown, the utility model is an air intake silencer for a medical oxygen concentrator, comprising an upper shell 1 and a lower shell 2, wherein the upper shell 1 and the lower shell 2 are respectively provided with a first air guide port 3 and a second air guide port 4, through which air can be introduced and exported respectively, and an outer wall of the upper shell 1 is provided with a plug hole 5, into which a fixing member such as a plug rod can be inserted, so that the silencer can be fixed to a specified position such as an air compressor by plugging for use, and the first air guide port 3 and the second air guide port 4 are vertically distributed. When the air is introduced into the interior of the upper shell 1 and the lower shell 2 through the first air guide port 3, it will collide with the inner wall of the upper shell 1 and the lower shell 2, and will pass through the second air guide port after multiple reflections. The air outlet 4 is derived. At this time, the flow rate of the air flow will be greatly slowed down due to multiple reflections, and the flow distance and path of the air flow will also become longer, which can effectively prevent the air from generating noise due to turbulence and eddy currents when entering the air inlet of the air compressor. Sound-absorbing material 8 is provided inside the upper shell 1 and the lower shell 2. The sound-absorbing material 8 is a sound-absorbing wall. The sound-absorbing wall is evenly provided with pyramid-shaped convex surfaces and is respectively adhered and fixed to the inner walls of the upper shell 1 and the lower shell 2 by glue or the like. When the air enters the inner cavity of the upper shell 1 and the lower shell 2, it will contact the sound-absorbing wall. At this time, the convex surface on the surface of the sound-absorbing wall can disrupt the propagation and diffusion of the air flow, so as to increase the complexity of the air flow, thereby playing a role in silencing.

[0028] Among them, the cross-sections of the upper shell 1 and the lower shell 2 are both circular with equal diameters, and the bottom end surface of the upper shell 1 and the top end surface of the lower shell 2 are respectively provided with mutually matching grooves and protrusions, and the surfaces of the grooves and protrusions are respectively engraved with mutually matching internal threads and external threads. The upper shell 1 and the lower shell 2 can be connected and fixed by means of a threaded connection. When the sound-absorbing material 8 needs to be replaced, the upper shell 1 and the lower shell 2 can be quickly separated by twisting, thereby making the replacement of the sound-absorbing material 8 more convenient and quick.

[0029] The outer wall surfaces of the upper shell 1 and the lower shell 2 are both provided with a plurality of reinforcing ribs 6 , which can effectively improve the hardness of the upper shell 1 and the lower shell 2 to prevent them from being damaged when impacted by external forces.

[0030] Among them, the outer wall surfaces of the first air guide port 3 and the second air guide port 4 are both provided with hose hooks 7, and hoses can be connected to the first air guide port 3 and the second air guide port 4 so as to introduce and export air through the hoses. When the hoses are sleeved on the first air guide port 3 and the second air guide port 4, the hose hooks 7 can be used to increase the friction between the hoses and the first air guide port 3 and the second air guide port 4, so as to effectively prevent the hoses from falling off the first air guide port 3 and the second air guide port 4.

[0031] Example 2:

[0032] See also Figure 7 As shown, on the basis of Example 1, the sound-absorbing material 8 is made of sound-absorbing cotton, which is a polyester fiber material and is laid and adhered to the inner walls of the upper shell 1 and the lower shell 2 respectively. When air enters the inner cavity of the upper shell 1 and the lower shell 2, it will come into contact with the sound-absorbing cotton. At this time, the sound-absorbing cotton can effectively absorb the noise generated by the air flow to play a sound-absorbing role. The sound-absorbing cotton can adopt a multi-layer structure to improve the sound-absorbing effect.

[0033] The circuits, electronic components and chip modules involved in the present invention are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0034] The standard parts used in the application documents can all be purchased on the market. All components in this application document can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The electrical components appearing in this article are all connected to the external main controller and 220V AC power, and the main controller can be a conventional known device that controls the LED lamp body, etc.

[0035] The working principle of this utility model is:

[0036] When the utility model is in use, the silencer can be fixed to a designated position such as an air compressor through the plug hole 5 for use. After the fixing is completed, the air is introduced into the interior of the upper shell 1 and the lower shell 2 along the first air guide port 3 through the hose, and the air is guided out to the air inlet of the air compressor along the second air guide port 4 through the hose. The first air guide port 3 and the second air guide port 4 are vertically distributed. When the air is introduced into the interior of the upper shell 1 and the lower shell 2 through the first air guide port 3, it collides with the inner walls of the upper shell 1 and the lower shell 2, and is guided out through the second air guide port 4 after multiple reflections. At this time, the flow rate of the air flow will be greatly slowed down due to multiple reflections, and the flow distance and path of the air flow will also become longer. , thereby effectively preventing the air from generating noise due to turbulence and eddy current when entering the air intake of the air compressor. Sound-absorbing material 8 is provided inside the upper shell 1 and the lower shell 2. The sound-absorbing material 8 can be selected from sound-absorbing walls or sound-absorbing cotton as needed. When air enters the inner cavity of the upper shell 1 and the lower shell 2, it will come into contact with the sound-absorbing material 8. At this time, the sound-absorbing material 8 can effectively absorb the noise generated by the air flow, so as to further play a role in silencing. The upper shell 1 and the lower shell 2 are connected and fixed by means of threaded connection. When the sound-absorbing material 8 needs to be replaced, the upper shell 1 and the lower shell 2 can be quickly separated by twisting, which makes the replacement of the sound-absorbing material 8 more convenient and quick.

[0037] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A medical oxygen concentrator air intake silencer, characterized in that: It includes an upper shell and a lower shell, and the upper shell and the lower shell are respectively provided with a first air guide port and a second air guide port, and the outer wall of the upper shell is provided with a plug hole, and the first air guide port and the second air guide port are vertically distributed, and sound-absorbing material is provided inside the upper shell and the lower shell.

2. The air intake silencer for a medical oxygen concentrator according to claim 1, characterized in that: The cross-sections of the upper shell and the lower shell are both circular with equal diameters, and the bottom end surface of the upper shell and the top end surface of the lower shell are respectively provided with mutually matching grooves and protrusions, and the surfaces of the grooves and protrusions are respectively engraved with mutually matching internal threads and external threads.

3. The air intake silencer for a medical oxygen concentrator according to claim 1, characterized in that: The outer wall surfaces of the upper shell and the lower shell are both provided with a plurality of reinforcing ribs.

4. The medical oxygen concentrator air intake silencer according to claim 1, characterized in that: The outer wall surfaces of the first air guide port and the second air guide port are both provided with hose barbs.

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