Oxygen generator and adsorption tower mounting structure for same

Abstract

The utility model relates to the field of ventilation treatment equipment, and discloses an oxygenerator and an adsorption tower installation structure used for the oxygenerator, the oxygenerator comprises an adsorption tower installation support (1), an adsorption tower (3) and a connection joint (2), the adsorption tower (3) is provided with an air inlet interface (312) and an air outlet interface (314), the adsorption tower installation support (1) is provided with an adsorption tower cabin (11) used for accommodating the adsorption tower (3), and the connection joint (2) is connected with the adsorption tower cabin (11). Mounting parts are arranged at the two ends of the adsorption tower mounting bracket (1), and when the adsorption tower (3) is connected into the adsorption tower bin (11), the connecting joint (2) penetrates through the mounting parts to be hermetically connected with the air inlet interface (312) or the air outlet interface (314). By means of the adsorption tower installation structure, when the adsorption tower is installed in place, the air inlet connector or the air outlet connector of the adsorption tower can be connected to the corresponding connector in a sealed mode, the air tightness problem or other damage caused by improper operation is avoided, the maintenance difficulty is low, and the use safety is high.

Description

Technical Field

[0001] This utility model relates to ventilation therapy equipment, specifically to an adsorption tower mounting structure for an oxygen generator. Furthermore, this utility model also relates to an oxygen generator including this adsorption tower mounting structure. Background Technology

[0002] With the improvement of living standards and the advancement of medical technology, people are paying more and more attention to health. This is especially true for those suffering from chronic respiratory diseases, such as chronic obstructive pulmonary disease (COPD) and asthma, for whom a continuous supply of oxygen is crucial. Portable oxygen concentrators, as a novel medical device, provide convenience for oxygen therapy in daily life. The core of a portable oxygen concentrator lies in the principle of pressure swing adsorption (PSA). Using ambient air as raw material, under normal temperature and low pressure conditions, it utilizes the characteristic that the adsorption capacity of molecular sieves increases when pressurized and decreases when depressurized, forming a rapid cycle of pressurized adsorption and depressurized desorption, thus separating oxygen and nitrogen from the air.

[0003] After a period of use, the adsorption capacity of the molecular sieve decreases, necessitating periodic replacement of the molecular sieve in the adsorption tower to maintain the oxygen generator's oxygen production capacity. However, existing oxygen generators typically have the adsorption tower fixed inside the unit to prevent loosening of the connection between the adsorption tower and related pipelines due to vibration. Therefore, when the molecular sieve needs replacement, operators must disassemble the oxygen generator's outer casing and use appropriate tools for disassembly and reassembly, increasing maintenance difficulty and posing certain safety risks. Thus, professional maintenance personnel are usually required to perform this operation. Furthermore, after replacing the adsorption tower, the relevant connecting pipelines must be sealed to the inlet and outlet ports of the adsorption tower, which also places high demands on the replacement operation. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of inconvenience and safety in replacing molecular sieves in existing oxygen generators, and to provide an adsorption tower installation structure for oxygen generators. This adsorption tower installation structure facilitates the maintenance of a sealed connection between the relevant connecting pipes and the adsorption tower interface after the operator reinstalls the adsorption tower, without the need for additional adjustment of the connecting pipes, effectively reducing maintenance difficulty and improving safety.

[0005] To achieve the above objectives, this utility model provides an adsorption tower installation structure for an oxygen generator, comprising:

[0006] The adsorption tower has an air inlet and an air outlet.

[0007] An adsorption tower mounting bracket is provided with an adsorption tower compartment for accommodating the adsorption tower, and mounting portions are provided at both ends of the adsorption tower mounting bracket.

[0008] The connecting joint, when the adsorption tower is connected to the adsorption tower chamber, passes through the mounting part and is sealed to the air inlet or air outlet.

[0009] Preferably, the connecting joint includes a pipe body, which is inserted into and sealed to the air inlet or air outlet when the adsorption tower is located inside the adsorption tower chamber.

[0010] Preferably, the connecting joint is detachably or fixedly installed on the mounting portion. The connecting joint further includes a support boss and a limiting protrusion formed axially spaced from each other on the outer periphery of the tube body, and allows the support boss and the limiting protrusion to be engaged with both sides of the mounting portion by rotating the connecting joint after the limiting protrusion passes through the mounting portion.

[0011] Preferably, the tube body is fitted with a first sealing ring and a connector collar sequentially disposed on the side of the limiting protrusion facing away from the supporting protrusion. When the adsorption tower is connected to the adsorption tower chamber, the connector collar seals against the position surrounding the air inlet or air outlet.

[0012] Preferably, the adsorption tower has a sieve barrel with a molecular sieve mounting cavity, an end cap sealed to one end of the sieve barrel, and a molecular sieve installed in the molecular sieve mounting cavity. The air inlet is formed at the end of the sieve barrel connected to the end cap and communicates with the molecular sieve mounting cavity.

[0013] Preferably, the adsorption tower mounting bracket is provided with a latch assembly for abutting against the side of the end cover opposite to the insertion direction when the adsorption tower is inserted into the adsorption tower compartment; or, the end cover is formed with a locking tongue that is detachably connected to the adsorption tower mounting bracket by threaded fasteners.

[0014] Preferably, the latch assembly includes a latch cover connected to the adsorption tower mounting bracket, a latch slidably connected to the latch cover, and a latch spring elastically abutting between the latch cover and the latch. The latch spring is configured to cause the latch to pop out along an insertion direction perpendicular to the adsorption tower, so as to abut against the end cap when the adsorption tower is inserted into the adsorption tower compartment.

[0015] Preferably, the molecular sieve mounting cavity is provided with an upper sieve plate and a lower sieve plate located at both ends of the molecular sieve and allowing airflow to pass through. The lower sieve plate has a plurality of gas distribution holes, and the flow area of ​​the gas distribution holes near the edge of the lower sieve plate is greater than the flow area of ​​the gas distribution holes located at the center of the lower sieve plate.

[0016] Preferably, the molecular sieve mounting cavity is further provided with a sieve-pressing spring at both ends abutting against the end cap and the lower sieve plate respectively, so as to elastically press the lower sieve plate in the direction toward the molecular sieve, wherein the end cap and the lower sieve plate are respectively formed with spring limiting rings on the side facing the sieve-pressing spring.

[0017] Preferably, the sieve barrel has a pair of molecular sieve mounting cavities that are separated from each other and on which the molecular sieves are respectively installed, and the cross-sectional dimensions of the sieve barrel decrease along the insertion direction.

[0018] Preferably, the end cap is pivotally connected to a pull ring that is rotatable relative to the end cap between a pulled-up position and a default position surrounding the end cap.

[0019] Preferably, the adsorption tower mounting bracket has a guide structure protruding toward the adsorption tower compartment for guiding the adsorption tower to be inserted into the adsorption tower compartment.

[0020] A second aspect of this invention provides an oxygen generator, including an adsorption tower installed via the aforementioned adsorption tower mounting structure.

[0021] Through the above technical solution, the adsorption tower installation structure of this utility model allows the adsorption tower to be installed in the adsorption tower compartment of the adsorption tower mounting bracket. At the same time, with the mounting part on the adsorption tower mounting bracket as a reference, the air inlet or outlet of the adsorption tower can be sealed and connected to the corresponding connection joint when the adsorption tower is installed in place. The adsorption tower can be connected to the relevant connection pipeline without additional operation, avoiding airtightness problems or other damage caused by improper operation. It has low maintenance difficulty and high safety in use. Attached Figure Description

[0022] Figure 1 This is a perspective view of the adsorption tower mounting bracket in an adsorption tower mounting structure according to a preferred embodiment of the present invention, viewed from the bottom.

[0023] Figure 2 It is to remove the latch assembly from Figure 1 A schematic diagram showing the disassembled and disassembled components on the mounting bracket of the adsorption tower.

[0024] Figure 3 This is a bottom view of an adsorption tower installation structure according to a preferred embodiment of the present invention, which adopts... Figure 1 The adsorption tower mounting bracket shown;

[0025] Figure 4 It is Figure 3 A bottom view of the adsorption tower installation structure shown after the adsorption tower has been removed;

[0026] Figure 5yes Figure 3 A three-dimensional view of the adsorption tower in the installation structure shown.

[0027] Figure 6 yes Figure 5 The exploded view of the adsorption tower shown;

[0028] Figure 7 yes Figure 5 A bottom view of the sieve barrel in the adsorption tower shown.

[0029] Figure 8 yes Figure 5 A top view of the end caps in the adsorption tower shown.

[0030] Figure 9 yes Figure 5 A three-dimensional view of the lower sieve plate in the adsorption tower shown.

[0031] Figure 10 This is a cross-sectional view of the connection structure between the connecting joint, the adsorption tower mounting bracket, and the air inlet of the adsorption tower in an adsorption tower installation structure according to a preferred embodiment of the present invention.

[0032] Figure 11 yes Figure 10 A three-dimensional view of the connectors used;

[0033] Figure 12 This is a cross-sectional view of the connection structure between the connecting joint, the adsorption tower mounting bracket, and the gas outlet of the adsorption tower in an adsorption tower installation structure according to a preferred embodiment of the present invention.

[0034] Figure 13 This is a bottom view of the adsorption tower installation structure according to another preferred embodiment of the present invention;

[0035] Figure 14 It is Figure 13 A bottom view of the adsorption tower installation structure after the anti-dismantling cover has been removed.

[0036] Figure 15 It is Figure 14 A bottom view of the adsorption tower installation structure shown after the adsorption tower has been removed;

[0037] Figure 16 yes Figure 13 A three-dimensional view of the adsorption tower in the installation structure shown.

[0038] Figure 17 yes Figure 16 The diagram shows a three-dimensional view of the end cap of the adsorption tower.

[0039] Explanation of reference numerals in the attached figures

[0040] 1-Adsorption tower mounting bracket; 11-Adsorption tower compartment; 12-Guide structure; 13-Anti-tamper cover; 14-Adsorption tower positioning seat;

[0041] 2-Connecting joint; 21-Pipe body; 22-Supporting boss; 23-Limiting protrusion; 24-Rotating handle; 25-First sealing ring; 26-Joint collar;

[0042] 3-Adsorption tower; 31-Sieve barrel; 311-Molecular sieve mounting cavity; 312-Gas inlet port; 313-Sieve plate support ring; 314-Gas outlet port; 32-End cap; 321-Lock tongue; 322-Sealing gasket; 33-Molecular sieve; 34-Upper sieve plate; 35-Sieve cotton; 36-Lower sieve plate; 361-Gas distribution hole; 362-Spring limiting ring; 37-Sieve pressure spring; 38-Pull ring; 39-Second sealing ring;

[0043] 4-Latch assembly; 41-Latch cover; 42-Latch spring; 43-Latch. Detailed Implementation

[0044] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0045] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" generally refer to the upper, lower, left, and right as shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself.

[0046] Reference Figures 1 to 5 as well as Figure 10 According to a preferred embodiment of the present invention, an adsorption tower installation structure for an oxygen generator includes an adsorption tower mounting bracket 1 and an adsorption tower 3 mounted to the adsorption tower mounting bracket 1. The adsorption tower mounting bracket 1 has an adsorption tower compartment 11, the shape and size of which match the adsorption tower 3, and is provided with a connecting joint 2 for connecting to an air inlet and nitrogen outlet pipeline. The adsorption tower 3 is detachably inserted into the adsorption tower compartment 11 and has an air inlet port 312. When the adsorption tower 3 is inserted into the adsorption tower compartment 11, its air inlet port 312 is sealed to the connecting joint 2 on the adsorption tower mounting bracket 1, thereby enabling communication through the air inlet and nitrogen outlet pipeline connected to the connecting joint 2 to an air inlet and nitrogen outlet control valve, so as to introduce compressed air into the adsorption tower 3 for oxygen adsorption or to discharge nitrogen generated by desorption within the adsorption tower 3.

[0047] Therefore, this adsorption tower installation structure allows the adsorption tower 3 to be detachably installed into the adsorption tower compartment 11 of the adsorption tower mounting bracket 1 via a plug-in method. Simultaneously, the air inlet 312 of the adsorption tower 3 is sealed to the connecting joint 2 located on the adsorption tower mounting bracket 1, ensuring a sealed connection to the air inlet and nitrogen exhaust pipeline. When the molecular sieve needs to be replaced, the operator only needs to pull the adsorption tower 3 out of or insert it into the adsorption tower compartment 11 to complete the disassembly and assembly of the adsorption tower 3. No additional operations are required to connect the adsorption tower 3 to the relevant connecting pipelines, avoiding airtightness problems or other damage caused by improper operation. Maintenance is simple and operation is highly safe.

[0048] Specifically, the shape and size of the adsorption tower mounting bracket 1 and the adsorption tower 3 are designed such that when the adsorption tower 3 is received by the adsorption tower chamber 11, the adsorption tower mounting bracket 1 at least partially covers the adsorption tower 3 circumferentially in the height direction of the adsorption tower 3. In a preferred embodiment, the adsorption tower chamber 11 formed by the adsorption tower mounting bracket 1 surrounds the adsorption tower 3. That is, when the adsorption tower 3 is fully connected to the adsorption tower chamber 11, except for the inlet or outlet port, the entire adsorption tower 3 is located in the adsorption tower mounting bracket 1. This method not only helps to protect the adsorption tower 3, but also ensures that the adsorption tower 3 always moves along the inside of the adsorption tower chamber 11 when inserted in the height direction, reducing shaking during insertion and making the sealing positioning more accurate.

[0049] The adsorption tower 3 may also have an outlet port 314 for discharging the produced oxygen, and the sealing connection method between the aforementioned connecting joint 2 and the inlet port 312 is also applicable to the outlet port 314. Specifically, refer to... Figure 5 and Figure 12 As shown, the outlet end of the adsorption tower 3 can be equipped with a control component, such as a pressure equalization control assembly. This control component can be sealed to the outlet port 314 of the adsorption tower 3 via a connecting joint 2 passing through a corresponding mounting portion on the adsorption tower mounting bracket 1. Furthermore, after disassembling and replacing the adsorption tower, once the adsorption tower 3 is installed in place, its outlet port 314 can be sealed to the connecting joint 2. Therefore, the adsorption tower can be connected to the relevant connecting pipelines without additional operation, avoiding airtightness problems or other damage caused by improper operation, resulting in low maintenance difficulty and high operational safety.

[0050] The illustrated oxygen concentrator employs an integrated frame structure as the main support for mounting various functional components. The adsorption tower mounting bracket 1, as part of this main support, provides an adsorption tower compartment 11 for mounting the adsorption tower 3. In addition, this main support may also include a compressor compartment for mounting the compressor, and a mounting base for mounting the intake and exhaust nitrogen control valve and oxygen storage tank, etc. Thus, the various functional components in the oxygen concentrator can be integrated and modularly arranged, which is beneficial for the portability and miniaturization of the oxygen concentrator.

[0051] After assembling the various functional components onto the main support frame, the main unit casing can be fitted onto the outside of the main support frame to form a main unit with an integrated core. To supply power to the compressor and other components in the oxygen concentrator, the main unit can be connected to a battery box. This battery box has conductive terminals for electrical connection to the main unit and can be placed on a table as a base. When it is necessary to disassemble or assemble the adsorption tower, the battery box must first be removed from the main unit, exposing one end of the adsorption tower compartment 11 to the outside, so that the adsorption tower 3 can be removed from the adsorption tower compartment 11 or inserted into the adsorption tower compartment 11.

[0052] like Figure 10 and Figure 11 As shown, in a preferred embodiment of the adsorption tower mounting structure, the connecting joint 2 provided on the adsorption tower mounting bracket 1 may have a tube body 21 and support bosses 22 and limiting protrusions 23 formed axially spaced from each other on the outer periphery of the tube body 21. The adsorption tower mounting bracket 1 is formed with a mounting portion for connecting the connecting joint 2, and allows the support bosses 22 and limiting protrusions 23 to engage with both sides of the mounting portion by rotating the connecting joint 2 (e.g., by operating a rotating handle 24 on the side wall of the tube body 21) after the limiting protrusions 23 pass through the mounting portion. Thus, the connecting joint 2 can be detachably connected to the adsorption tower mounting bracket 1, and its axial position is defined by the support bosses 22 and limiting protrusions 23 engaging with both sides of the mounting portion. On the side of the mounting portion facing the limiting protrusions 23, the adsorption tower mounting bracket 1 may be formed with an anti-reverse structure to prevent the tube body 21 from rotating, thereby preventing the connecting joint 2 from accidentally detaching from the mounting portion.

[0053] As mentioned above, the connector 2 is used to connect the adsorption tower 3 to the inlet nitrogen exhaust control valve. For this purpose, one end of the connector 2 can be connected to the inlet nitrogen exhaust pipeline, and the other end passes through the mounting part of the adsorption tower mounting bracket 1. When the adsorption tower 3 is inserted into the adsorption tower chamber 11, the other end is sealed to the air inlet port 312 of the adsorption tower 3.

[0054] To ensure a sealed connection between the air intake port 312 and the connecting joint 2, the tube body 21 of the connecting joint 2 may be fitted with a first sealing ring 25 and a joint collar 26 sequentially disposed on the side of the limiting protrusion 23 facing away from the supporting protrusion 22, such as... Figure 10As shown. When the adsorption tower 3 is inserted into the adsorption tower compartment 11, the connector collar 26 seals against the position surrounding the air inlet 312. Thus, the first sealing ring 25 and the connector collar 26 seal the gap between the connecting connector 2 and the air inlet 312, ensuring that compressed air can be adequately supplied to the adsorption tower 3, and that the nitrogen generated during desorption in the adsorption tower 3 is discharged without leakage through the air inlet and nitrogen exhaust control valve. Since the connecting connector 2 needs to rotate relative to the adsorption tower mounting bracket 1 after insertion into the mounting part, the connector collar 26 is made of a self-lubricating material to prevent jamming during rotation and to ensure its sealing effect.

[0055] Reference Figures 5 to 9 As shown, the adsorption tower 3 may have a sieve barrel 31 with a molecular sieve mounting cavity 311, an end cap 32 sealed to one end of the sieve barrel 31, and a molecular sieve 33 installed within the molecular sieve mounting cavity 311. An inlet port 312 is formed at the end of the sieve barrel 31 connected to the end cap 32 and communicates with the molecular sieve mounting cavity 311. Therefore, an internal communication channel may be formed between the sieve barrel 31 and the end cap 32 at their contact points. Furthermore, a sealing gasket 322 may be provided on the side of the end cap 32 facing the sieve barrel 31 to ensure a tight seal between the two, preventing gas leakage from the contact point. The end cap 32 can be connected to the open end of the sieve barrel 31 by fastening screws.

[0056] As the main container for filling molecular sieve particles, the sieve barrel 31 can be made of a high-hardness, lightweight metal material such as aluminum alloy or magnesium alloy, or it can be made of plastic. Furthermore, in the preferred embodiment shown in the figure, a pair of spaced-apart molecular sieve mounting cavities 311 are formed within the sieve barrel 31 for mounting molecular sieves 33, thereby alternately performing adsorption and desorption steps. Compared to independently installed sieve barrels, the adsorption tower 3 of this invention allows for the simultaneous removal and installation of a pair of molecular sieves 33 from the main unit, simplifying the disassembly and assembly operations. The sieve barrel 31 has a generally figure-eight-shaped cross-section, facilitating the guidance and positioning of the sieve barrel 31 at the spaced-apart positions of the molecular sieve mounting cavities 311 using the adsorption tower mounting bracket 1. Moreover, the cross-sectional dimensions of the sieve barrel 31 decrease along the insertion direction, allowing the adsorption tower 3 to be easily inserted into the predetermined position within the adsorption tower chamber 11, significantly reducing installation difficulty and avoiding the risk of gas leakage due to improper installation.

[0057] The top of the sieve barrel 31 may have an interface for connecting to the pressure equalization control component, and a second sealing ring 39 may be provided at the interface location for sealing connection to the pressure equalization control component or related ventilation lines.

[0058] Refer again Figures 1 to 4As shown, in order to position the adsorption tower 3 at a predetermined location within the adsorption tower chamber 11, the adsorption tower mounting bracket 1 may be equipped with a latch assembly 4. When the adsorption tower 3 is inserted into the predetermined location within the adsorption tower chamber 11, the latch assembly 4 can abut against the side of the end cap 32 of the adsorption tower 3 opposite to the insertion direction. Thus, after the adsorption tower 3 is installed in place, the latch assembly 4 stops its end cap 32 to prevent the adsorption tower 3 from detaching from the adsorption tower chamber 11, ensuring that the air inlet 312 is sealed to the connecting joint 2 on the adsorption tower mounting bracket 1.

[0059] Specifically, the latch assembly 4 may include a latch cap 41 connected to the adsorption tower mounting bracket 1, a latch 43 slidably connected to the latch cap 41, and a latch spring 42 elastically abutting between the latch cap 41 and the latch 43. The latch spring 42 is configured to allow the latch 43 to pop out along a direction perpendicular to the insertion direction of the adsorption tower 3, so that it can abut against the end cap 32 when the adsorption tower 3 is inserted into a predetermined position in the adsorption tower compartment 11. The adsorption tower mounting bracket 1 may have a guide groove for guiding the sliding of the latch 43, thereby preventing the latch 43 from deflecting during sliding relative to the latch cap 41. Furthermore, the latch assembly 4 may include two or more latch springs 42 arranged in parallel, thereby ensuring that the latch 43 can be smoothly popped out, avoiding jamming or failure to reset. Thus, when the adsorption tower 3 is inserted into the adsorption tower compartment 11, the latch 43 is driven to retract against the elastic force of the latch spring 42 until the latch 43 springs back under the action of the latch spring 42, making a "click" reset sound, indicating that the adsorption tower 3 has reached the predetermined position. With this setting, the adsorption tower 3 is quickly installed into the adsorption tower mounting bracket 1 and the accurate installation position is guaranteed, so that the air inlet 312 is sealed to the connecting joint 2, and the latch assembly 4 can prevent the adsorption tower 3 from falling out of the predetermined position.

[0060] Figures 13 to 17 Another form of adsorption tower mounting structure is provided, which secures the adsorption tower 3 to its mounting position via a tamper-evident cover 13 and fastening screws. Specifically, as... Figure 16 and Figure 17 As shown, the adsorption tower 3 in this embodiment has a locking tongue 321 provided on the end cap 32. Accordingly, as Figure 15 As shown, the adsorption tower mounting bracket 1 may be equipped with an adsorption tower positioning seat 14. When the adsorption tower 3 is installed in the predetermined position within the adsorption tower compartment 11, the adsorption tower 3 is fixed in its installation position by passing a threaded fastener through the locking tongue 321 and screwing it to the adsorption tower positioning seat 14, as shown. Figure 14 As shown. Compared to the aforementioned latch assembly 4, this adsorption tower installation structure requires tools such as screwdrivers to disassemble and assemble the adsorption tower. Furthermore, as... Figure 13 As shown, an anti-tamper cover plate 13 covering the locking tongue 321 can also be connected to the adsorption tower positioning seat 14.

[0061] Refer again Figures 5 to 9 The molecular sieve mounting cavity 311 of the sieve barrel 31 may be provided with an upper sieve plate 34 and a lower sieve plate 36 located at both ends of the molecular sieve 33, allowing airflow to pass through. To position the upper sieve plate 34 within the molecular sieve mounting cavity 311, a sieve plate support ring 313 may be provided on the inner wall of the sieve barrel 31, such that one side of the upper sieve plate 34 abuts against the sieve plate support ring 313, while the molecular sieve 33 abuts against the other side of the upper sieve plate 34. In other embodiments, the sieve plate support ring 313 may be replaced with a discontinuous annular support structure.

[0062] The upper sieve plate 34 can be a porous plate-shaped component made of materials such as PP or PE through a sintering process. On the one hand, the upper sieve plate 34 is used to prevent molecular sieve particles in the sieve barrel 31 from being discharged from its upper interface. For this reason, the upper sieve plate 34 usually has a high filtration accuracy, and the pore size is generally 100μm to 1μm. On the other hand, the upper sieve plate 34 can also buffer the airflow and make the airflow distribution uniform, so that the oxygen produced flows more gently in the flow layer section during the flow process of the upper sieve plate 34, thereby maximizing the utilization of molecular sieve in the sieve barrel and avoiding nitrogen penetration caused by the high airflow velocity at the center position.

[0063] A sieve cotton 35 may be provided on the side of the lower sieve plate 36 facing the molecular sieve 33. This sieve cotton 35 may have the same material and function as the upper sieve plate 34. Multiple gas distribution holes 361 are formed on the lower sieve plate 36, and the flow area of ​​the gas distribution holes 361 near the edge of the lower sieve plate 36 is larger than that of the gas distribution holes 361 located at the center of the lower sieve plate 36. By providing multiple gas distribution holes 361, the compressed gas introduced into the sieve barrel 31 can be evenly distributed and enter the molecular sieve 33, so as to fully utilize the adsorption performance of the molecular sieve 33. By setting the flow area of ​​the gas distribution holes 361 at the edge of the lower sieve plate 36 to be relatively large, the airflow end face inside the sieve barrel 31 can be made smoother, avoiding the gas flow rate through the central part of the molecular sieve 33 being significantly greater than that of the outer part due to the resistance of the inner wall of the sieve barrel to the airflow. This is beneficial to improving the adsorption efficiency and the final oxygen concentration.

[0064] Furthermore, the molecular sieve mounting cavity 311 may also be equipped with a screen-pressing spring 37, with its two ends respectively abutting against the end cap 32 and the lower screen plate 36, to elastically compress the lower screen plate 36 in the direction toward the molecular sieve 33. A spring-limiting ring 362 may be formed on the side of the end cap 32 and the lower screen plate 36 facing the screen-pressing spring 37, thereby preventing the screen-pressing spring 37 from tilting during deformation, ensuring that the lower screen plate 36 stably abuts against the molecular sieve 33, avoiding wear caused by relative movement of molecular sieve particles under airflow, reducing the risk of pulverization of the molecular sieve 33, and extending its service life.

[0065] To facilitate the removal of the adsorption tower 3 from the adsorption tower chamber 11, a pull ring 38 is pivotally connected to the end cap 32 of the adsorption tower 3. The pull ring 38 can rotate relative to the end cap 32 between a pulled position and a default position surrounding the end cap 32. When it is necessary to remove the adsorption tower 3 from the adsorption tower chamber 11, the pull ring 38 is rotated to the pulled position to apply a pulling force away from the adsorption tower chamber 11. When the adsorption tower 3 is installed in place, the pull ring 38 can be rotated to the default position surrounding the end cap 32 to install other related components of the oxygen generator, such as the battery box, on the side of the end cap 32 opposite to the sieve barrel 31.

[0066] like Figure 1 As shown, in a preferred embodiment, the adsorption tower mounting bracket 1 may have a guide structure 12 protruding toward the adsorption tower compartment 11 for guiding the adsorption tower 3 to be inserted into the adsorption tower compartment 11. The guide structure 12 may be a plurality of guide plates extending along the insertion direction of the adsorption tower 3, so as to guide the adsorption tower 3 to be inserted into the adsorption tower compartment 11 in the correct direction.

[0067] This utility model also provides an oxygen generator, which includes an adsorption tower 3 installed by the above-described adsorption tower mounting structure.

[0068] The oxygen generator and its adsorption tower installation structure according to the preferred embodiment of this utility model have many advantages:

[0069] 1. Enhanced Convenience: The adsorption tower can be quickly connected to the main unit via a plug-in design, enabling easy replacement. This design eliminates the need to disassemble the oxygen generator casing when replacing the molecular sieve, thus avoiding internal risks of electric shock or mechanical malfunctions and improving maintenance convenience. Even non-professional users can easily assemble and disassemble the adsorption tower, increasing user autonomy.

[0070] 2. Enhanced Safety: Replacing the molecular sieve is simple and convenient, avoiding the need to disassemble the oxygen generator casing and reducing safety risks during maintenance. Furthermore, using a structured gas duct instead of pipe connections effectively reduces airtightness issues that can easily occur with pipe connections, further improving safety.

[0071] 3. Performance Optimization: Improved ease and safety of molecular sieve replacement allow users to easily replace them, ensuring normal operation of the oxygen concentrator and stable oxygen concentration. Furthermore, the replacement of piped connections with structural air ducts effectively reduces airtightness issues that can arise with piped connections, further enhancing the oxygen concentrator's performance.

[0072] 4. Cost Savings: The disassembly and assembly method of this utility model not only improves the replacement efficiency of molecular sieves but also saves on labor assembly costs during production. Furthermore, since users can replace the molecular sieves themselves, the need for on-site maintenance personnel is reduced, further saving operating costs.

[0073] 5. Improve adsorption and desorption efficiency: The different layouts and opening methods of the sieve plate make the flow rate more uniform and prevent excessively raised peaks, so that nitrogen penetrates or reaches the oxygen end later, thereby improving the adsorption efficiency and the concentration of the final output gas.

[0074] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. An adsorption tower installation structure for an oxygen generator, characterized in that, include: The adsorption tower (3) has an air inlet (312) and an air outlet (314); An adsorption tower mounting bracket (1) is formed with an adsorption tower compartment (11) for accommodating the adsorption tower (3), and mounting portions are provided at both ends of the adsorption tower mounting bracket (1); When the adsorption tower (3) is connected to the adsorption tower chamber (11), the connecting joint (2) passes through the mounting part and is sealed to the air inlet (312) or the air outlet (314).

2. The adsorption tower installation structure for an oxygen generator according to claim 1, characterized in that, The connecting joint (2) includes a pipe body (21), which is inserted into and sealed to the air inlet (312) or air outlet (314) when the adsorption tower (3) is located inside the adsorption tower chamber (11).

3. The adsorption tower installation structure for an oxygen generator according to claim 2, characterized in that, The connecting joint (2) is detachably or fixedly installed on the mounting part. The connecting joint (2) also includes a support boss (22) and a limiting protrusion (23) formed axially spaced from each other on the outer periphery of the tube body (21). The supporting boss (22) and the limiting protrusion (23) are allowed to be engaged with both sides of the mounting part by rotating the connecting joint (2) after the limiting protrusion (23) passes through the mounting part.

4. The adsorption tower installation structure for an oxygen generator according to claim 3, characterized in that, The tube body (21) is fitted with a first sealing ring (25) and a connector collar (26) sequentially arranged on the side of the limiting protrusion (23) away from the supporting protrusion (22). When the adsorption tower (3) is connected to the adsorption tower chamber (11), the connector collar (26) seals against the position surrounding the air inlet (312) or air outlet (314).

5. The adsorption tower installation structure for an oxygen generator according to claim 1, characterized in that, The adsorption tower (3) has a sieve barrel (31) with a molecular sieve mounting cavity (311), an end cap (32) sealed to one end of the sieve barrel (31), and a molecular sieve (33) installed in the molecular sieve mounting cavity (311). The air inlet (312) is formed at one end of the sieve barrel (31) connected to the end cap (32) and communicates with the molecular sieve mounting cavity (311).

6. The adsorption tower installation structure for an oxygen generator according to claim 5, characterized in that, The adsorption tower mounting bracket (1) is provided with a latch assembly (4) for abutting against the side of the end cover (32) opposite to the insertion direction when the adsorption tower (3) is inserted into the adsorption tower compartment (11), or the end cover (32) is formed with a locking tongue (321) that is detachably connected to the adsorption tower mounting bracket (1) by a threaded fastener.

7. The adsorption tower installation structure for an oxygen generator according to claim 6, characterized in that, The latch assembly (4) includes a latch cap (41) connected to the adsorption tower mounting bracket (1), a latch (43) slidably connected to the latch cap (41), and a latch spring (42) elastically abutting between the latch cap (41) and the latch (43). The latch spring (42) is configured to cause the latch (43) to pop out along an insertion direction perpendicular to the adsorption tower (3) so that it can abut against the end cap (32) when the adsorption tower (3) is inserted into the adsorption tower compartment (11).

8. The adsorption tower installation structure for an oxygen generator according to claim 5, characterized in that, The molecular sieve mounting cavity (311) is provided with an upper sieve plate (34) and a lower sieve plate (36) located at both ends of the molecular sieve (33) and allowing airflow to pass through. The lower sieve plate (36) has a plurality of gas distribution holes (361) formed on it, and the flow area of ​​the gas distribution holes (361) near the edge of the lower sieve plate (36) is greater than the flow area of ​​the gas distribution holes (361) located at the center of the lower sieve plate (36).

9. The adsorption tower installation structure for an oxygen generator according to claim 8, characterized in that, The molecular sieve mounting cavity (311) is also provided with a sieve pressure spring (37) with both ends abutting against the end cap (32) and the lower sieve plate (36) respectively, so as to elastically squeeze the lower sieve plate (36) in the direction toward the molecular sieve (33). The end cap (32) and the lower sieve plate (36) are respectively formed with spring limiting rings (362) on the side facing the sieve pressure spring (37).

10. The adsorption tower installation structure for an oxygen generator according to claim 5, characterized in that, The sieve barrel (31) has a pair of molecular sieve mounting cavities (311) that are separated from each other and on which the molecular sieves (33) are respectively installed. The cross-sectional dimensions of the sieve barrel (31) decrease along the insertion direction.

11. The adsorption tower installation structure for an oxygen generator according to claim 5, characterized in that, The end cap (32) is pivotally connected to a pull ring (38) which is rotatable relative to the end cap (32) between a pulled position and a default position around the end cap (32).

12. The adsorption tower installation structure for an oxygen generator according to claim 1, characterized in that, The adsorption tower mounting bracket (1) has a guide structure (12) protruding toward the adsorption tower compartment (11) for guiding the adsorption tower (3) to be inserted into the adsorption tower compartment (11).

13. An oxygen generator, characterized in that, Including an adsorption tower (3) installed by means of an adsorption tower installation structure according to any one of claims 1 to 12.

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