Oxygen generator convenient to maintain

Abstract

The utility model provides an oxygen generator convenient to maintain, which comprises an oxygen generation component, a gas supply component, a gas supply component, a gas supply component, a gas supply component and a gas supply component, and is characterized in that the oxygen generation component is configured to generate high-oxygen-concentration gas by using a nitrogen adsorption method; the oxygen generation assembly is installed on the inner side of the shell, and an opening corresponding to a filter of the oxygen generation assembly is formed in the upper end of the shell; the upper cover plate is used for closing the opening in the shell; a threaded hole corresponding to the through hole is formed in the shell, and the connecting bolt penetrates through the through hole and is in threaded connection with the inner side of the threaded hole of the shell. The filter has the beneficial effects that the filter or filter cotton in the filter can be conveniently replaced by dismounting the upper baffle, the replacement efficiency is improved, and the use experience is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen concentrators, in particular to an oxygen concentrator which is easy to maintain. Background Art

[0002] Household oxygen concentrators mostly use the method of adsorbing nitrogen to prepare oxygen. Current oxygen concentrators have the following problems during use: First, the filter at the air inlet needs to be replaced or the filter cotton inside the filter after a period of use to prevent low air intake efficiency from causing low oxygen production efficiency. Current filter replacement or maintenance requires the oxygen concentrator shell to be completely disassembled, which affects the replacement efficiency and thus affects the user experience; second, the working process of the compressor will produce shaking in different directions, which may cause the entire oxygen concentrator to shake or even damage the oxygen concentrator, affecting the normal use of the oxygen concentrator. Utility Model Content

[0003] In view of this, the utility model aims to provide an oxygen concentrator that is easy to maintain, in order to solve at least one of the above-mentioned technical problems.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] An oxygen concentrator that is easy to maintain, comprising:

[0006] An oxygen production component configured to produce a gas with a high oxygen concentration by adsorbing nitrogen;

[0007] A shell, the oxygen production component is installed on the inner side of the shell, and an opening corresponding to the filter of the oxygen production component is opened at the upper end of the shell;

[0008] An upper cover plate, the upper cover plate is used to close the opening on the shell, one end of the upper cover plate is bent downward to form a baffle plate, a through hole is opened on the baffle plate, positioning grooves are provided on both sides of the upper cover plate, and positioning plates corresponding to the positioning grooves are fixedly provided at both ends of the inner side of the opening, and the positioning plates are installed on the inner side of the positioning grooves;

[0009] A connecting bolt, wherein a threaded hole corresponding to the through hole is opened on the shell, and the connecting bolt passes through the through hole and is threadedly connected to the inner side of the threaded hole of the shell.

[0010] Furthermore, the oxygen production component includes a compressor, the air inlet of the compressor is provided with a filter, the air outlet of the compressor is connected to the air inlet of the radiator, the air outlet of the radiator is connected to the air inlet of the gas-liquid separator, the air outlet of the gas-liquid separator is connected to the air inlet of the adsorption tower, the air outlet of the adsorption tower is connected to the air inlet of the gas storage tank, and the air outlet of the gas storage tank is connected to the gas supply pipe through a gas flow regulating valve.

[0011] Furthermore, the number of the adsorption towers is two, namely the first adsorption tower and the second adsorption tower. The air inlets of the first adsorption tower and the second adsorption tower are connected to the air outlet of the gas-liquid separator through a two-position four-way valve. The air outlets of the first adsorption tower and the second adsorption tower are connected to the air inlet of the gas storage tank. The air outlets of the first adsorption tower and the second adsorption tower are provided with a one-way valve, and the two-position four-way valve is provided with a muffler.

[0012] Two-position four-way valve has two working positions;

[0013] When the two-position four-way valve is in the first working position, the air inlet of the first adsorption tower is connected to the air outlet of the gas-liquid separator, and the air inlet of the second adsorption tower is connected to the air inlet of the muffler;

[0014] When the two-position four-way valve is in the second working position, the air inlet of the second adsorption tower is communicated with the air outlet of the gas-liquid separator, and the air inlet of the first adsorption tower is communicated with the air inlet of the muffler.

[0015] Furthermore, a compression spring is provided between the outer shell of the compressor and the bottom plate of the housing.

[0016] Furthermore, mounting blocks are fixedly provided at both ends of the compressor shell, a limit plate is fixedly provided at one end of the mounting block away from the compressor, a limit block corresponding to the mounting block is fixedly provided on the bottom plate of the shell, a limit groove corresponding to the limit plate is opened on the limit block, the diameter of the limit groove is larger than the diameter of the limit plate, and the limit plate is installed on the inner side of the limit groove.

[0017] Furthermore, a positioning tube is fixedly provided on the upper end surface of the bottom plate of the shell, and a positioning column corresponding to the positioning tube is fixedly provided on the lower end of the outer shell of the compressor, and the diameter of the positioning column is smaller than the inner diameter of the positioning tube.

[0018] Furthermore, handles are fixedly provided on both sides of the shell.

[0019] Furthermore, a heat dissipation hole 1 is provided on the shell body corresponding to the heat dissipation hole 1, and a heat dissipation fan corresponding to the heat dissipation hole 1 is fixedly provided on the side wall of the heat dissipation hole.

[0020] Furthermore, a soundproof cover is provided on the outside of the compressor, an opening is provided at the lower end of the soundproof cover, and the lower end of the soundproof cover is fixedly connected to the shell;

[0021] The inner side wall of the soundproof cover is fixedly provided with soundproof cotton.

[0022] Furthermore, a pad is fixedly provided on the lower end surface of the upper cover plate, a baffle is fixedly provided on the lower end surface of the pad, the width of the pad is smaller than the width of the baffle, and a positioning groove is formed between the baffle and the upper cover plate;

[0023] The shell is provided with a notch matching the baffle, the notch is communicated with the opening, and the baffle is located inside the notch;

[0024] A mounting plate corresponding to the baffle is fixedly arranged on the inner side of the shell, and the threaded hole is located on the mounting plate;

[0025] The thickness of the upper cover plate matches the thickness of the shell;

[0026] The positioning plate is installed on the lower end surface of the shell top plate.

[0027] Compared with the prior art, the oxygen concentrator easy to maintain described in the utility model has the following beneficial effects:

[0028] (1) The utility model discloses an oxygen concentrator that is easy to maintain. The upper baffle can be removed to facilitate replacement of the filter or the filter cotton in the filter, thereby improving replacement efficiency and further improving the user experience.

[0029] (2) The utility model discloses an oxygen concentrator that is easy to maintain. When the compressor shakes during operation, the limit plate moves inside the limit groove, and the limit groove limits the limit plate to prevent the compressor from shaking too much and damaging the shell. The compression spring plays a buffering role during the shaking of the compressor. The compression spring can buffer the reaction force of the compressor shaking on the shell, preventing the shell shaking from affecting the normal use of the oxygen concentrator. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0031] Figure 1 This is a schematic diagram of the three-dimensional structure of the oxygen concentrator according to an embodiment of the utility model;

[0032] Figure 2 This is a schematic diagram of the three-dimensional structure of the upper cover plate according to an embodiment of the utility model;

[0033] Figure 3 This is a schematic diagram of the three-dimensional structure of the oxygen concentrator according to the embodiment of the utility model without the upper cover plate installed;

[0034] Figure 4 For the embodiment of the utility model Figure 3 Schematic diagram of the structure at A in the middle;

[0035] Figure 5 This is a schematic diagram of the cross-sectional structure of the soundproof cover according to an embodiment of the utility model;

[0036] Figure 6 For the embodiment of the utility model Figure 5 Schematic diagram of the structure at B in the middle;

[0037] Figure 7 This is a schematic diagram of the three-dimensional structure of the oxygen production assembly according to an embodiment of the utility model from a first perspective;

[0038] Figure 8 This is a schematic diagram of the three-dimensional structure of the oxygen production assembly according to an embodiment of the utility model from a second viewing angle;

[0039] Fig. 9 It is a schematic diagram of the cross-sectional structure of the limiting plate described in an embodiment of the utility model.

[0040] Description of reference numerals:

[0041] 1. Shell; 2. Upper cover; 3. Soundproof cover; 4. Oxygen production component; 5. Compression spring; 6. Limit block; 101. Handle; 102. Opening; 103. Notch; 104. Positioning plate; 105. Mounting plate; 106. Positioning tube; 401. Flow regulating valve; 402. Compressor; 403. Radiator; 404. Filter; 405. Adsorption tower; 406. Two-position four-way valve; 407. Muffler; 408. Gas storage tank; 409. Gas-liquid separator; 40201. Positioning column; 40202. Limit plate; 601. Limit groove. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0043] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0045] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0046] like Figures 1 to 9 As shown, an oxygen concentrator that is easy to maintain includes:

[0047] The oxygen production component 4 is configured to produce a gas with a high oxygen concentration by using a nitrogen adsorption method;

[0048] The shell 1, the oxygen production component 4 is installed on the inner side of the shell 1, and the upper end of the shell 1 is provided with an opening 102 corresponding to the filter 404 of the oxygen production component 4;

[0049] The upper cover plate 2 is used to close the opening 102 on the housing 1. One end of the upper cover plate 2 is bent downward to form a baffle plate. A through hole is opened on the baffle plate. Positioning grooves are provided on both sides of the upper cover plate 2. Positioning plates 104 corresponding to the positioning grooves are fixedly provided at both ends of the inner side of the opening 102. The positioning plates 104 are installed on the inner side of the positioning grooves.

[0050] The connecting bolt has a threaded hole corresponding to the through hole on the shell 1 , and the connecting bolt passes through the through hole and is threadedly connected to the inner side of the threaded hole of the shell 1 .

[0051] The through holes are strip-shaped through holes, which are convenient for installing connecting bolts.

[0052] The oxygen production component 4 includes a compressor 402, the air inlet of the compressor 402 is provided with a filter 404, the air outlet of the compressor 402 is connected to the air inlet of the radiator 403, the air outlet of the radiator 403 is connected to the air inlet of the gas-liquid separator 409, the air outlet of the gas-liquid separator 409 is connected to the air inlet of the adsorption tower 405, the air outlet of the adsorption tower 405 is connected to the air inlet of the gas storage tank 408, and the air outlet of the gas storage tank 408 is connected to the gas supply pipe through the gas flow regulating valve 401. The number of adsorption towers 405 is two, namely, the first adsorption tower 405 and the second adsorption tower 405. The air inlets of the first adsorption tower 405 and the second adsorption tower 405 are connected to the air outlet of the gas-liquid separator 409 through a two-position four-way valve 406. The air outlets of the first adsorption tower 405 and the second adsorption tower 405 are connected to the air inlet of the gas storage tank 408. A one-way valve is provided on the air outlet of the first adsorption tower 405 and the second adsorption tower 405, and a muffler 407 is provided on the two-position four-way valve 406. ; Two working positions of the two-position four-way valve 406; when the two-position four-way valve 406 is in the first working position, the air inlet of the first adsorption tower 405 is connected to the air outlet of the gas-liquid separator 409, and the air inlet of the second adsorption tower 405 is connected to the air inlet of the muffler 407; when the two-position four-way valve 406 is in the second working position, the air inlet of the second adsorption tower 405 is connected to the air outlet of the gas-liquid separator 409, and the air inlet of the first adsorption tower 405 is connected to the air inlet of the muffler 407.

[0053] The compressor 402 adopts but is not limited to the existing Ruiteng Electromechanical oil-free air compressor 402RT450A; the radiator 403 adopts but is not limited to the existing copper tube radiator 403, and the specific structure is that the two ends of the bent copper tube are respectively an air inlet and an air outlet, and the side wall of the copper tube is fixed with heat dissipation fins; the adsorption tower 405 adopts but is not limited to the existing zeolite molecular sieve type adsorption tower 405, which is provided with a zeolite molecular sieve inside, and the zeolite is used to adsorb nitrogen under high pressure and release nitrogen under normal pressure; the flow control valve 401 adopts but is not limited to the existing kofloc gas cylinder regulator flow meter model RK4400;

[0054] The two-position four-way valve 406 adopts but is not limited to the existing Rexroth electromagnetic reversing valve two-position four-way coil 4WE6D62 / EG24N9K4 solenoid valve; the gas-liquid separator 409 adopts but is not limited to the existing ConST101-1 automatic gas-liquid separator 409; the muffler 407 is usually composed of an outer shell, a sound-absorbing material and an internal structure. The outer shell is the external protective shell of the entire muffler 407, which can prevent dust and debris from entering the muffler 407. The internal sound-absorbing material (such as foam, glass fiber cotton, etc.) is used to absorb the sound wave energy generated when the gas is discharged, thereby reducing the propagation of noise. The internal structure of the muffler 407 is usually designed as a maze or sound-absorbing panel to increase the propagation path of the sound wave in the sound-absorbing material and improve the sound absorption effect.

[0055] The flow regulating valve 401, compressor 402, radiator 403, filter 404, adsorption tower 405, two-position four-way valve 406, muffler 407, gas storage tank 408, and gas-liquid separator 409 are all existing technologies, and the specific structure and connection form are not repeated here.

[0056] A compression spring 5 is provided between the outer shell of the compressor 402 and the bottom plate of the housing 1. Mounting blocks are fixedly provided at both ends of the outer shell of the compressor 402, and a limit plate 40202 is fixedly provided at one end of the mounting block away from the compressor 402. A limit block 6 corresponding to the mounting block is fixedly provided on the bottom plate of the housing 1. A limit groove 601 corresponding to the limit plate 40202 is formed on the limit block 6. The diameter of the limit groove 601 is larger than the diameter of the limit plate 40202. The limit plate 40202 is installed on the inner side of the limit groove 601. When the compressor 402 shakes during operation, the limit plate 40202 moves inside the limit groove 601, and the limit groove 601 limits the limit plate 40202 to prevent the compressor 402 from shaking too much and damaging the shell 1. The compression spring 5 plays a buffering role during the shaking of the compressor 402. Since the shaking of the compressor 402 is in different directions at different times, the compression spring 5 can buffer the reaction force of the shaking of the compressor 402 on the shell 1, thereby preventing the shaking of the shell 1 from affecting the normal use of the oxygen generator.

[0057] In this embodiment, the thickness and width of the limiting plate 40202 are respectively smaller than the width and length of the limiting groove 601, and there is a gap between the limiting plate 40202 and the bottom end of the limiting groove 601, which can buffer the shaking of the compressor 402 in different directions.

[0058] A positioning tube 106 is fixedly provided on the upper end surface of the bottom plate of the shell 1, and a positioning column 40201 corresponding to the positioning tube 106 is fixedly provided at the lower end of the outer shell of the compressor 402. The diameter of the positioning column 40201 is smaller than the inner diameter of the positioning tube 106. The positioning column 40201 is installed on the inner side of the positioning tube 106, and there is a gap between the bottom end of the positioning column 40201 and the bottom end of the positioning tube 106.

[0059] The coordinated installation of the positioning tube 106 and the positioning column 40201 further limits the shaking of the compressor 402.

[0060] Handles 101 are fixedly provided on both sides of the housing 1, and the handles 101 are convenient for moving the oxygen concentrator.

[0061] The shell 1 is provided with a heat dissipation hole 1 corresponding to the radiator 403, and a heat dissipation fan corresponding to the heat dissipation hole 1 is fixedly provided on the side wall of the radiator 403. The heat dissipation fan blows the gas in the shell 1 to exchange heat with the radiator 403, thereby improving the heat dissipation effect of the radiator 403 and ensuring the oxygen production efficiency.

[0062] A soundproof cover 3 is provided on the outside of the compressor 402, an opening 102 is provided at the lower end of the soundproof cover 3, and the lower end of the soundproof cover 3 is fixedly connected to the housing 1; soundproof cotton is fixedly provided on the inner wall of the soundproof cover 3. The soundproof cover 3 reduces noise and improves the user experience of the oxygen concentrator.

[0063] A pad is fixedly provided on the lower end surface of the upper cover plate 2, and a baffle is fixedly provided on the lower end surface of the pad. The width of the pad is smaller than the width of the baffle, and a positioning groove is formed between the baffle and the upper cover plate 2; the positioning plate 104 and the pad are both U-shaped structures, and the opening 102 of the U-shaped structure faces the notch 103, and the baffles are located on both sides and the horizontal end of the pad.

[0064] A notch 103 matching the baffle is provided on the shell 1, the notch 103 is connected to the opening 102, and the baffle is located on the inner side of the notch 103; a mounting plate 105 corresponding to the baffle is fixedly provided on the inner side of the shell 1, and the threaded hole is located on the mounting plate 105; the thickness of the upper cover plate 2 matches the thickness of the shell 1, so that the shell 1 is flat and beautiful while preventing scratches on the user; the positioning plate 104 is installed on the lower end surface of the top plate of the shell 1.

[0065] When it is necessary to replace the filter 404 or the filter cotton in the filter 404, loosen the connecting bolts and move the upper baffle toward the notch 103. After the replacement is completed, align the positioning groove with the positioning plate 104 and insert it. During this process, the positioning plate 104 plays a role in positioning and guiding, which facilitates the installation of the upper cover plate 2 and improves the efficiency of replacement and installation.

[0066] Working process:

[0067] When this solution is implemented, external air enters the compressor 402 through the filter 404, the filter 404 filters out dust in the air, the compressor 402 compresses the air into high-pressure air, and the high-pressure air passes through the radiator 403 and the external radiator 403 for heat dissipation. The radiator 403 reduces the temperature of the compressed gas to facilitate the subsequent nitrogen adsorption operation, and enters the gas-liquid separator 409 for gas-liquid separation. The gas-liquid separator 409 removes the liquid, and the gas enters the adsorption tower 405 to adsorb nitrogen in the gas to become a gas with a high oxygen concentration. The gas with a high oxygen concentration enters the gas storage tank 408 for storage, and then is adjusted through the gas flow regulating valve 401 for flow adjustment through the gas supply pipe for human breathing.

[0068] The arrangement of the two adsorption towers 405 can ensure the timely supply of oxygen, and the specific method is as follows: when the two-position four-way valve 406 is in the first working position, the air inlet of the first adsorption tower 405 is connected to the air outlet of the gas-liquid separator 409, and the air inlet of the second adsorption tower 405 is connected to the air inlet of the muffler 407. At this time, the compressed gas enters the first adsorption tower 405 to adsorb nitrogen, and the gas with a high oxygen concentration enters the gas storage tank for storage. Due to the arrangement of the one-way valve, the second adsorption tower 405 releases nitrogen at normal pressure. The adsorbed nitrogen is discharged to the outside through the muffler 407, and the muffler 407 reduces the sound of gas emission; when the two-position four-way valve 406 is in the second working position, the air inlet of the second adsorption tower 405 is connected with the air outlet of the gas-liquid separator 409, and the air inlet of the first adsorption tower 405 is connected with the air inlet of the muffler 407. The process is similar to the above. By alternating the first adsorption tower 405 and the second adsorption tower 405, an uninterrupted supply of oxygen can be achieved, thereby improving the stability of the oxygen supply.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oxygen concentrator that is easy to maintain, characterized in that: include: An oxygen production component (4), wherein the oxygen production component (4) is configured to produce gas with a high oxygen concentration by using a nitrogen adsorption method; A shell (1), the oxygen production component (4) is installed on the inner side of the shell (1), and an opening (102) corresponding to the filter (404) of the oxygen production component (4) is opened at the upper end of the shell (1); An upper cover plate (2), the upper cover plate (2) being used to close the opening (102) on the shell (1), one end of the upper cover plate (2) being bent downward to form a baffle plate, the baffle plate being provided with a through hole, positioning grooves being provided on both sides of the upper cover plate (2), positioning plates (104) corresponding to the positioning grooves being fixedly provided at both ends of the inner side of the opening (102), the positioning plates (104) being installed on the inner side of the positioning groove; A connecting bolt, wherein a threaded hole corresponding to the through hole is formed on the shell (1), and the connecting bolt passes through the through hole and is threadedly connected to the inner side of the threaded hole of the shell (1).

2. The oxygen concentrator easy to maintain according to claim 1, characterized in that: The oxygen production component (4) comprises a compressor (402), the air inlet of the compressor (402) is provided with a filter (404), the air outlet of the compressor (402) is communicated with the air inlet of a radiator (403), the air outlet of the radiator (403) is communicated with the air inlet of a gas-liquid separator (409), the air outlet of the gas-liquid separator (409) is communicated with the air inlet of an adsorption tower (405), the air outlet of the adsorption tower (405) is communicated with the air inlet of a gas storage tank (408), and the air outlet of the gas storage tank (408) is communicated with a gas supply pipe via a gas flow regulating valve (401).

3. The oxygen concentrator easy to maintain according to claim 2, characterized in that: The number of the adsorption towers (405) is two, namely, a first adsorption tower (405) and a second adsorption tower (405). The air inlets of the first adsorption tower (405) and the second adsorption tower (405) are both connected to the air outlet of the gas-liquid separator (409) through a two-position four-way valve (406). The air outlets of the first adsorption tower (405) and the second adsorption tower (405) are both connected to the air inlet of the gas storage tank (408). One-way valves are provided on the air outlets of the first adsorption tower (405) and the second adsorption tower (405). A muffler (407) is provided on the two-position four-way valve (406); Two-position four-way valve (406) has two working positions; When the two-position four-way valve (406) is in the first working position, the air inlet of the first adsorption tower (405) is connected to the air outlet of the gas-liquid separator (409), and the air inlet of the second adsorption tower (405) is connected to the air inlet of the muffler (407); When the two-position four-way valve (406) is in the second working position, the air inlet of the second adsorption tower (405) is connected to the air outlet of the gas-liquid separator (409), and the air inlet of the first adsorption tower (405) is connected to the air inlet of the muffler (407).

4. The oxygen concentrator easy to maintain according to claim 2, characterized in that: A compression spring (5) is provided between the outer shell of the compressor (402) and the bottom plate of the housing (1).

5. The oxygen concentrator easy to maintain according to claim 4, characterized in that: Mounting blocks are fixedly provided at both ends of the outer shell of the compressor (402); a limiting plate (40202) is fixedly provided at one end of the mounting block away from the compressor (402); a limiting block (6) corresponding to the mounting block is fixedly provided on the bottom plate of the shell (1); a limiting groove (601) corresponding to the limiting plate (40202) is formed on the limiting block (6); the diameter of the limiting groove (601) is larger than the diameter of the limiting plate (40202); and the limiting plate (40202) is installed on the inner side of the limiting groove (601).

6. The oxygen concentrator easy to maintain according to claim 5, characterized in that: A positioning tube (106) is fixedly provided on the upper end surface of the bottom plate of the shell (1), and a positioning column (40201) corresponding to the positioning tube (106) is fixedly provided on the lower end of the outer shell of the compressor (402), and the diameter of the positioning column (40201) is smaller than the inner diameter of the positioning tube (106).

7. The oxygen concentrator easy to maintain according to claim 2, characterized in that: Handles (101) are fixedly provided on both sides of the housing (1).

8. The oxygen concentrator easy to maintain according to claim 2, characterized in that: The housing (1) is provided with a heat dissipation hole one corresponding to the heat dissipation hole (403), and a heat dissipation fan corresponding to the heat dissipation hole one is fixedly provided on the side wall of the heat dissipation hole (403).

9. The oxygen concentrator easy to maintain according to claim 2, characterized in that: A soundproof cover (3) is provided on the outside of the compressor (402), an opening (102) is provided at the lower end of the soundproof cover (3), and the lower end of the soundproof cover (3) is fixedly connected to the housing (1); The inner side wall of the soundproof cover (3) is fixedly provided with soundproof cotton.

10. The oxygen concentrator easy to maintain according to claim 1, characterized in that: A cushion strip is fixedly provided on the lower end surface of the upper cover plate (2), a baffle strip is fixedly provided on the lower end surface of the cushion strip, the width of the cushion strip is smaller than the width of the baffle strip, and a positioning groove is formed between the baffle strip and the upper cover plate (2); The housing (1) is provided with a notch (103) matching the baffle, the notch (103) is communicated with the opening (102), and the baffle is located on the inner side of the notch (103); A mounting plate (105) corresponding to the baffle is fixedly provided on the inner side of the housing (1), and the threaded hole is located on the mounting plate (105); The thickness of the upper cover plate (2) matches the thickness of the shell (1); The positioning plate (104) is mounted on the lower end surface of the top plate of the shell (1).

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