Oxygen storage tank and portable oxygen generator

Abstract

The utility model discloses an oxygen storage tank and a portable oxygen generator, and relates to the technical field of oxygen storage tanks, the oxygen storage tank comprises a tank body, a tank cover and a bacterial filter; the tank body is of a cylindrical structure with one open end, the tank body and the tank bottom of the tank body are in smooth transition, the tank cover is arranged at the open position of the tank body, and the tank cover and the tank body of the tank body are in smooth transition; the bacterial filter is located in the tank body, is fixedly arranged on a tank body of the tank body, and is used for filtering particle impurities in produced oxygen. According to the oxygen storage tank, the tank body is of the straight cylindrical structure, the tank body and the tank bottom of the tank body are in smooth transition, the tank cover and the tank body of the tank body are in smooth transition, when the oxygen storage tank bears pressure, the pressure is evenly distributed, pressure concentration can be prevented under the same pressure, and leakage caused by the conditions of breakage, deformation and the like of the oxygen storage tank can be effectively avoided. The bacteria filter is arranged in the tank body, so that the occupied space can be reduced, the overall structure is more compact, and the oxygenerator is smaller in size and more portable. The oxygen generator can generate the same technical effect.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen storage tanks, in particular to an oxygen storage tank and a portable oxygen concentrator. Background Art

[0002] The oxygen storage tank is the core gas circuit component inside the oxygen concentrator. It is mainly used to store the oxygen produced by the oxygen concentrator to ensure the stability of the oxygen flow and concentration output to the oxygen outlet.

[0003] Existing square oxygen storage tanks are square in a broad sense, including standard shapes such as squares and rectangles, as well as other shapes with planes as inner walls, such as polygonal prisms and "L" shapes. They are characterized by having multiple flat side walls, top surfaces and bottom surfaces, and there are obvious corners at the connection positions of adjacent flat walls. When the tank body is subjected to internal pressure, for a single flat side wall, it is subjected to uniform gas load, and the center positions of several flat surfaces of the square gas storage tank are weak points for deformation, which are prone to deformation such as "bulging"; at the same time, the corners where the flat walls are connected are prone to stress concentration due to the sudden change in geometric shape, resulting in the stress at the corners being higher than the stress on the side walls, thereby creating a risk of cracking.

[0004] The existing special-shaped oxygen storage tanks mostly have irregular curved surfaces that are "non-circular" or "non-square", which causes uneven internal pressure distribution. Stress concentration is easy to occur at locations with small curvature radius and steep surface transition, resulting in a high risk of leakage and deformation.

[0005] Therefore, how to provide an oxygen storage tank with uniform internal pressure distribution and effectively avoid cracking and deformation is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] The utility model aims to provide an oxygen storage tank and a portable oxygen concentrator, which solve the technical problems of uneven pressure distribution inside existing square and special-shaped oxygen storage tanks, which are prone to cracking and deformation.

[0007] To achieve the above objectives, the present invention provides an oxygen storage tank, comprising:

[0008] The tank body and the tank cover are cylindrical structures with one end open, and the tank body and the tank bottom have a smooth transition. The tank cover is arranged at the open end of the tank body, and the tank cover has a smooth transition with the tank body.

[0009] The bacterial filter is located inside the tank body and is fixed to the tank body. The bacterial filter is used to filter particulate impurities in the output oxygen.

[0010] Preferably, the bacterial filter comprises:

[0011] A filter cavity is provided inside the bacterial filter;

[0012] a first channel, both ends of which are connected to the interior of the tank and the filter cavity respectively;

[0013] a connecting hole, communicating with the filter cavity;

[0014] Filter cotton, arranged in the filter cavity;

[0015] The oxygen enters the filter cavity through the first channel, is filtered by the filter cotton, and is discharged through the connecting hole.

[0016] Preferably, the tank body is provided with a first air outlet, the first air outlet is communicated with the connecting hole, and an air outlet joint is installed at the first air outlet.

[0017] Preferably, the tank cover is equipped with a one-way valve.

[0018] Preferably, it also includes:

[0019] a valve insert, provided on the tank cover and connected to the one-way valve;

[0020] a one-way valve cover, provided on the tank cover and connected to the valve insert;

[0021] An air inlet connector is installed on the one-way valve cover and is communicated with the one-way valve. The air inlet connector is communicated with the interior of the tank body through the one-way valve.

[0022] Preferably, the tank cover is equipped with a blowback valve, and the connection and disconnection of the air inlet connector are controlled by the blowback valve.

[0023] Preferably, the tank body is provided with a second air outlet, and a connecting joint is installed at the second air outlet, and the connecting joint is used to be connected to a pressure detector to detect the real-time pressure inside the tank body.

[0024] Preferably, a sealing member is provided between the tank body and the tank cover, and the tank body and the tank cover are sealed and connected via the sealing member.

[0025] Preferably, the tank body is provided with a plurality of fixing parts, the tank cover is provided with a plurality of mounting holes, the mounting holes correspond one-to-one to the fixing parts, the tank body and the tank cover are connected by fasteners, and the fasteners are threadedly connected to the fixing parts through the mounting holes.

[0026] The utility model also provides a portable oxygen concentrator, comprising the oxygen storage tank provided by any of the above technical solutions.

[0027] Compared to the above-mentioned background technology, the oxygen storage tank provided by the present invention adopts a straight cylindrical structure, with a smooth transition between the tank body and the tank bottom, and a smooth transition between the tank cover and the tank body. Compared to square or irregular-shaped oxygen storage tanks, the oxygen storage tank provided by the present invention has a uniform pressure distribution when under pressure, which can prevent pressure concentration under the same pressure, and can effectively prevent the oxygen storage tank from rupturing, deforming, and other situations that may cause leakage. The bacterial filter is installed inside the tank body. Compared with the existing design where the bacterial filter is installed outside the oxygen storage tank and connected by a hose, it can reduce space usage and make the overall structure more compact, which is conducive to the miniaturization and portability of the oxygen concentrator.

[0028] The portable oxygen concentrator provided by the utility model can produce the same technical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0030] Figure 1 A schematic diagram of an explosion of an oxygen storage tank provided in an embodiment of the present utility model;

[0031] Figure 2 A schematic cross-sectional view of an oxygen storage tank provided in an embodiment of the present invention;

[0032] Figures 1 to 2 Reference numerals in the accompanying drawings: 10, tank body; 101, fixing part; 11, tank cover; 111, mounting hole; 12, bacterial filter; 121, filter chamber; 122, first channel; 123, connecting hole; 124, filter cotton; 13, air outlet joint; 14, connecting joint; 15, sealing member; 16, fastener; 20, one-way valve; 21, valve insert; 22, one-way valve cover; 23, air inlet joint; 24, back-blow valve. DETAILED DESCRIPTION

[0033] The following will be combined with the 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.

[0034] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0035] Please refer to Figures 1 to 2 The oxygen storage tank provided by the present invention includes a tank body 10, a tank cover 11 and a bacterial filter 12; the tank body 10 is a cylindrical structure with one end open, the tank body 10 has a smooth transition to the tank bottom, the tank cover 11 is arranged at the open end of the tank body 10, and the tank cover 11 has a smooth transition to the tank body 10; the bacterial filter 12 is located inside the tank body 10, and the bacterial filter 12 is fixedly arranged on the tank body 10, and the bacterial filter 12 is used to filter particulate impurities in the produced oxygen.

[0036] The tank body 10 of the oxygen storage tank provided by the present invention adopts a straight cylindrical structure, with a smooth transition between the tank body 10 and the tank bottom, and a smooth transition between the tank cover 11 and the tank body 10. Compared with square or irregular-shaped oxygen storage tanks, the oxygen storage tank provided by the present invention has a uniform pressure distribution when under pressure, which can prevent pressure concentration under the same pressure, effectively avoid the oxygen storage tank from cracking, deforming, etc., which may cause leakage, and improve the service life. The bacterial filter 12 is arranged inside the tank body 10. Compared with the existing design in which the bacterial filter device is arranged outside the oxygen storage tank and connected by a hose, it can reduce space occupation and make the overall structure more compact, making the oxygen concentrator smaller and more portable. It can also avoid the blockage of the air path caused by the bending of the hose due to the use of redundant hoses, which is beneficial to oxygen delivery.

[0037] Please refer to Figures 1 to 2 The bacterial filter 12 includes a filter chamber 121, a first channel 122, a connecting hole 123 and filter cotton 124; the filter chamber 121 is arranged inside the bacterial filter 12; the two ends of the first channel 122 are respectively connected to the inside of the tank body 10 and the filter chamber 121; the connecting hole 123 is connected to the filter chamber 121; the filter cotton 124 is arranged in the filter chamber 121; among them, oxygen enters the filter chamber 121 through the first channel 122, is filtered by the filter cotton 124, and is discharged through the connecting hole 123.

[0038] When the bacterial filter 12 filters the produced oxygen, the oxygen inside the tank body 10 first enters the filter chamber 121 through the first channel 122. Under the filtering action of the filter cotton 124 in the filter chamber 121, particulate impurities in the oxygen are filtered out, and the filtered oxygen is discharged through the connecting hole 123, thereby improving the cleanliness of the oxygen output of the oxygen concentrator. At the same time, by improving the cleanliness of the output oxygen, it can protect subsequent valve components and extend their service life. Among them, the number of first channels 122 is at least two. Such a configuration is effective in improving the oxygen filtration efficiency and oxygen supply efficiency.

[0039] Please refer to Figures 1 to 2The tank body 10 is provided with a first air outlet, which is communicated with the connecting hole 123. An air outlet connector 13 is installed at the first air outlet, and the filtered oxygen is discharged through the connecting hole 123 and the first air outlet via the air outlet connector 13.

[0040] Please refer to Figures 1 to 2 The oxygen storage tank provided by the present invention has a tank cover 11 equipped with a one-way valve 20, through which the prepared oxygen is introduced into the tank body 10 of the oxygen storage tank.

[0041] Please refer to Figures 1 to 2 The oxygen storage tank provided by the present invention also includes a valve insert 21, a one-way valve cover 22 and an air inlet connector 23; the valve insert 21 is provided on the tank cover 11, and the valve insert 21 is connected to the one-way valve 20; the one-way valve cover 22 is provided on the tank cover 11, and the one-way valve cover 22 is connected to the valve insert 21; the air inlet connector 23 is installed on the one-way valve cover 22, and the air inlet connector 23 is connected to the one-way valve 20, and the air inlet connector 23 is connected to the inside of the tank body 10 through the one-way valve 20.

[0042] The adsorption tower is the core component of the molecular sieve oxygen concentrator. It usually has two straight cylindrical cavities, which are equipped with molecular sieves for adsorbing nitrogen. During operation, clean air is pressurized and passed through the straight cylindrical cavity. The nitrogen in the air is adsorbed by the molecular sieve, and the remaining oxygen is discharged to the oxygen storage tank through the outlet. Because the molecular sieve has an adsorption limit, after reaching the limit, the adsorbed nitrogen needs to be discharged as waste gas by reducing pressure. Therefore, the adsorption tower is usually equipped with two molecular sieve cylinders A and B, that is, "pressurization for oxygen addition" in cylinder A and "pressure reduction for nitrogen discharge" in cylinder B. When the molecular sieve adsorption capacity in cylinder A reaches its limit, cylinder A is switched to "pressure reduction for nitrogen discharge" and cylinder B is switched to "pressurization for oxygenation". In this way, it can be guaranteed that at any time, one of cylinders A and B is in the "pressurization for oxygenation" stage, ensuring that the oxygen concentrator produces continuous oxygen.

[0043] In this embodiment, there are two air inlet connectors 23. It can be understood that the two air inlet connectors 23 are respectively used to connect to the two molecular sieve cylinders of the adsorption tower, so that the prepared oxygen is passed into the tank body 10 of the oxygen storage tank through the air inlet connector 23 and the one-way valve 20.

[0044] Please refer to Figures 1 to 2 The oxygen storage tank provided by the present invention has a tank cover 11 equipped with a blowback valve 24 , which controls the connection and disconnection of the air inlet connector 23 .

[0045] During the decompression and nitrogen removal phase, the nitrogen in the chamber will not be discharged on its own. A portion of oxygen must be reserved as a power source to blow out the remaining nitrogen. That is, when the adsorption tower A barrel is decompressing and nitrogen is being removed, a portion of the oxygen produced by the B barrel must be reserved for blowing out the nitrogen in barrel A. The A and B barrels of the adsorption tower need to be periodically connected and disconnected. The backflush valve 24 is used to control the connection and disconnection of the A and B barrels. The one-way valve cover 22 serves as the valve seat for the backflush valve 24. By controlling the backflush valve 24, the two air inlet connectors 23 connecting the A and B barrels of the adsorption towers can be periodically connected and disconnected.

[0046] Please refer to Figures 1 to 2 The tank body 10 is provided with a second air outlet, and a connecting joint 14 is installed at the second air outlet. The connecting joint 14 is used to connect to a pressure detector to detect the real-time pressure inside the tank body 10.

[0047] Please refer to Figures 1 to 2 A sealing member 15 is provided between the tank body 10 and the tank cover 11, and the tank body 10 and the tank cover 11 are sealed and connected by the sealing member 15. In this embodiment, the sealing member 15 is an O-ring, and the sealing ring is provided between the tank body 10 and the tank cover 11 to improve the airtightness of the oxygen storage tank.

[0048] Please refer to Figures 1 to 2 The tank body 10 is provided with a plurality of fixing portions 101 on the outside, and the tank cover 11 is provided with a plurality of mounting holes 111, with the mounting holes 111 corresponding one to the fixing portions 101. The tank body 10 and the tank cover 11 are connected via fasteners 16, which are threadedly connected to the fixing portions 101 through the mounting holes 111. The end faces of the tank body 10 and the tank cover 11 are pressed against the seal 15 and locked by the fasteners 16, making them easy to disassemble. When the filter cotton 124 of the bacterial filter 12 in the tank body 10 reaches its adsorption limit and needs to be replaced, the tank cover 11 can be removed from the tank body 10 for replacement. The fasteners 16 can be screws or bolts.

[0049] Specifically, there are four fixing parts 101, and the four fixing parts 101 are evenly distributed around the tank body 10. With this arrangement, the tank body 10 and the tank cover 11 are tightly connected, and the seal is evenly pressurized, so that the seal 15 can fully fill the gap between the tank body 10 and the tank cover 11, thereby improving the sealing of the oxygen storage tank and preventing oxygen leakage.

[0050] The utility model also provides a portable oxygen concentrator, comprising the oxygen storage tank provided by any of the above technical solutions.

[0051] The oxygen storage tank provided by the present invention adopts a straight cylindrical structure, with a smooth transition between the tank body 10 and the tank bottom, and a smooth transition between the tank cover 11 and the tank body 10. Compared with square or irregular-shaped oxygen storage tanks, the oxygen storage tank provided by the present invention has a uniform pressure distribution when under pressure, and can prevent pressure concentration under the same pressure, and can effectively prevent the oxygen storage tank from rupturing, deforming, and causing leakage. The bacterial filter 12 is arranged inside the tank body 10, and the one-way valve 20 and the back-blow valve 24 are integrated and installed in the tank cover 11. Compared with the existing design in which the bacterial filter 12 is arranged outside the oxygen storage tank and connected by a hose, it can reduce space occupation, make the overall structure more compact, and facilitate the miniaturization and portability of the oxygen concentrator. The portable oxygen concentrator includes an oxygen storage tank, and thus can produce the same technical effects.

[0052] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0053] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. An oxygen storage tank, characterized in that: include: The tank body and the tank cover are cylindrical structures with one end open, and the tank body and the tank bottom have a smooth transition. The tank cover is arranged at the open end of the tank body, and the tank cover has a smooth transition with the tank body. The bacterial filter is located inside the tank body and is fixed to the tank body. The bacterial filter is used to filter particulate impurities in the output oxygen.

2. The oxygen storage tank according to claim 1, characterized in that The bacterial filter comprises: A filter cavity is provided inside the bacterial filter; a first channel, both ends of which are connected to the interior of the tank and the filter cavity respectively; a connecting hole, communicating with the filter cavity; Filter cotton, arranged in the filter cavity; The oxygen enters the filter cavity through the first channel, is filtered by the filter cotton, and is discharged through the connecting hole.

3. The oxygen storage tank according to claim 2, characterized in that The tank body is provided with a first air outlet, the first air outlet is communicated with the connecting hole, and an air outlet joint is installed at the first air outlet.

4. The oxygen storage tank according to claim 3, characterized in that The tank cover is equipped with a one-way valve.

5. The oxygen storage tank according to claim 4, characterized in that Also includes: a valve insert, provided on the tank cover and connected to the one-way valve; a one-way valve cover, provided on the tank cover and connected to the valve insert; An air inlet connector is installed on the one-way valve cover and is communicated with the one-way valve. The air inlet connector is communicated with the interior of the tank body through the one-way valve.

6. The oxygen storage tank according to claim 5, characterized in that The tank cover is equipped with a blowback valve, which controls the connection and disconnection of the air inlet joint.

7. The oxygen storage tank according to claim 6, characterized in that: The tank body is provided with a second air outlet, and a connecting joint is installed at the second air outlet. The connecting joint is used to connect to a pressure detector to detect the real-time pressure inside the tank body.

8. The oxygen storage tank according to claim 1, characterized in that A sealing member is provided between the tank body and the tank cover, and the tank body and the tank cover are sealed and connected via the sealing member.

9. The oxygen storage tank according to claim 8, characterized in that: The tank body is provided with a plurality of fixing parts, the tank cover is provided with a plurality of mounting holes, the mounting holes correspond one to one with the fixing parts, the tank body and the tank cover are connected by fasteners, and the fasteners are threadedly connected to the fixing parts through the mounting holes.

10. A portable oxygen concentrator, characterized in that: The oxygen storage tank comprises the oxygen storage tank according to any one of claims 1 to 9.

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