Damping type air pump assembly of handheld oxygen generator

Abstract

The utility model discloses a handheld oxygen generator's damping type air pump subassembly in the field of oxygen generating equipment, including air pump support and the air pump of setting in air pump support, the air pump is L type single cylinder compression air pump, is equipped with an elastic connecting piece at the both ends of air pump respectively, and the upper and lower both ends of elastic connecting piece are fixedly connected with the upper and lower both ends of air pump support respectively, make the air pump be hung in air pump support. The utility model utilizes two elastic connecting pieces and links the both ends of air pump with air pump support, realizes the suspension installation of air pump, can play enough support and spacing function again, can slow down the vibration that air pump passes to air pump support, improves the damping effect of air pump subassembly, in addition, adopts the single cylinder compression air pump of L type, can reduce the transverse occupied space of whole air pump subassembly, makes the equipment more compact, is favorable to the miniaturization of whole oxygen generator.

Description

Technical Field

[0001] This utility model relates to the field of oxygen generation equipment, and in particular to a vibration-damping air pump assembly for a handheld oxygen generator. Background Technology

[0002] Current portable oxygen concentrators primarily employ pressure swing adsorption (PSA) to extract oxygen from the air. Molecular sieves are the core component in this separation process. The principle is that under certain pressure, the molecular sieve adsorbs nitrogen from the air, thus collecting oxygen. When the pressure decreases, the adsorbed nitrogen desorbs, regenerating the molecular sieve. The compressed air required for the molecular sieve is mainly provided by a compressor. The compressor relies on a motor driving a piston in a reciprocating motion to compress and deliver the gas, resulting in significant vibration during operation. To reduce the vibration transmitted from the compressor to the entire device, damping pads are typically installed at the connection between the compressor and the mounting bracket. However, the damping range of these pads is limited, and the damping effect is not ideal. Furthermore, most current portable oxygen concentrators use cylindrical compressors. The existing compressor structure and its mounting structure occupy a considerable amount of space in the extremely small portable oxygen concentrator. Further reduction in the size of the oxygen concentrator makes it difficult to fit the existing compressor and mounting structures into such a small space. Therefore, further reduction in the volume occupied by the compressor and its mounting structure is necessary. Utility Model Content

[0003] To overcome the shortcomings of existing oxygen concentrators, such as poor shock absorption of the air pump and difficulty in assembling in a very small space, the technical problem to be solved by this utility model is to provide a vibration-damping air pump assembly for a handheld oxygen concentrator with good shock absorption and a compact structure.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A vibration-damping air pump assembly for a handheld oxygen concentrator includes an air pump bracket and an air pump mounted on the bracket. The air pump is an L-shaped single-cylinder compressor air pump. Each end of the air pump has an elastic connector, the upper and lower ends of which are fixedly connected to the upper and lower ends of the air pump bracket, respectively, allowing the air pump to be suspended within the bracket. The L-shaped single-cylinder compressor air pump occupies little lateral space, which is beneficial for the miniaturization of the handheld oxygen concentrator. Connecting the two ends of the air pump to the air pump bracket using two elastic connectors provides sufficient support and limitation, while also reducing the vibration transmitted from the air pump to the bracket, thus improving the vibration damping effect. The L-shaped arrangement of the air pump allows for adaptation to the handheld oxygen concentrator's high-compression requirements. For example, in a bottle-shaped structure with a circular cross-section, the L-shape allows the air pump to be installed within its maximum diameter range, while preventing the outer edge of the air pump from extending beyond the edge of the air pump bracket. This facilitates installation of the handheld oxygen concentrator's casing via the air pump bracket without any interference, enabling assembly within a very small space.

[0005] The specific structure of the elastic connector preferably includes a rubber sleeve, silicone sleeve, or polyurethane sleeve with connecting ears around its periphery. The elastic connector is fitted into the limiting grooves on the side walls at both ends of the air pump and is fixedly connected to the air pump bracket by screws passing through the connecting ears. All three materials have good elastic stability, and by designing reasonable structural dimensions, it can be ensured that it can support the air pump, achieving a balance between support and vibration reduction.

[0006] When installing the flexible connectors onto the air pump, it is best to ensure that the centers of the two flexible connectors and the center of gravity of the air pump are in the same vertical plane, or that the center of gravity of the air pump is located in the center of the line connecting the centers of the two flexible connectors. This will make the air pump installation more stable and the force more even, thereby reducing the vibration generated during the operation of the air pump.

[0007] The air pump bracket can adopt a combination structure of an upper bracket and a lower bracket, with the upper and lower ends of the elastic connector fixedly connected to the upper bracket and the lower bracket, respectively. Specifically, the upper bracket includes a top plate and an upper support column disposed on the bottom surface of the top plate, and the lower bracket includes a bottom plate and a lower support column disposed on the top surface of the bottom plate. The upper and lower support columns are connected and fixed together. Using the upper and lower support columns to connect the upper and lower brackets facilitates the installation of the air pump and also allows the air pump to be exposed as much as possible, which is beneficial for heat dissipation.

[0008] To reduce the overall size of the oxygen generator and eliminate unnecessary structural components, mounting sections for installing the oxygen generating components and battery components can be provided on the top surface of the top plate and the bottom surface of the bottom plate of the air pump bracket, respectively.

[0009] To improve the structural strength of the air pump support, the upper and lower support columns include at least three sets, which are evenly distributed along the circumference of the top and bottom plates. Ribs are provided between the upper support column and the top plate, and between the lower support column and the bottom plate.

[0010] For the docking and fixing method of the upper and lower supports, a threaded hole can be set at the lower end of the upper support column, and the lower support column adopts a sleeve structure with an internal positioning ring. During installation, the lower end of the upper support column is inserted into the upper end of the lower support column, abutting against the positioning ring, and then fixed together with the positioning ring by screws, which can ensure the docking accuracy and connection reliability of the upper and lower support columns.

[0011] To fully utilize the internal space of the air pump bracket, a filter chamber protruding towards the center of the air pump bracket is provided on the top surface of the base plate or the bottom surface of the top plate. The filter chamber is equipped with an air intake grille and an openable cover, and is filled with filter elements. One end of the filter chamber is connected to the air inlet of the air pump through an air intake pipe. Integrating the air intake filter structure with the air pump bracket results in a compact structure and convenient assembly.

[0012] The beneficial effects of this utility model are as follows: By using two elastic connectors to connect the two ends of the air pump to the air pump bracket, the air pump can be suspended and installed. This not only provides sufficient support and limit, but also reduces the vibration transmitted from the air pump to the air pump bracket, thus improving the vibration reduction effect of the air pump assembly. In addition, the use of an L-shaped single-cylinder compressor air pump and a hollow air pump bracket can reduce the lateral space occupied by the entire air pump assembly, making the equipment more compact. At the same time, most of the air pump surface is exposed, which can ensure heat dissipation. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the vibration-damping air pump assembly in this utility model; Figure 2 This is a front view of the vibration-damping air pump assembly of this utility model; Figure 3 This is a rear view of the vibration-damping air pump assembly of this utility model; Figure 4 This is a bottom view of the vibration-damping air pump assembly in this utility model.

[0014] The components in the diagram are labeled as follows: 1-Air pump, 2-Upper bracket, 3-Lower bracket, 4-Elastic connector, 5-Rib plate, 6-Filter chamber, 7-Cover plate, 8-Intake pipe, 11-Limiting groove, 21-Top plate, 22-Upper support column, 31-Bottom plate, 32-Lower support column, 33-Positioning ring, 41-Connecting ear, 61-Intake grille. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] It should be noted that if this utility model contains directional indicators such as up, down, left, right, front, and back, these terms are used to describe the relative positional relationships between components and are not specific references to the absolute positions of the components or the relationships between them. They are only used to explain the relative positional relationships and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly. If this utility model contains terms related to quantity such as "many," "multiple," or "several," these terms specifically refer to two or more.

[0017] like Figures 1 to 3 As shown, this utility model provides a vibration-damping air pump assembly for a handheld oxygen concentrator, including an air pump bracket and an air pump 1 mounted on the air pump bracket. The air pump 1 is an L-shaped single-cylinder compression air pump. An elastic connector 4 is provided at each end of the air pump 1. The upper and lower ends of the elastic connector 4 are fixedly connected to the upper and lower ends of the air pump bracket, respectively, so that the air pump 1 is suspended inside the air pump bracket. An L-shaped single-cylinder compression air pump refers to a compression air pump where the axis of the motor is perpendicular to the axis of the piston cylinder. Compared to a straight-cylinder compression air pump, this type of compression air pump has a more centrally concentrated structure, resulting in less lateral space occupation. Simultaneously, the piston cylinder has a sufficiently large compression chamber, which can increase the gas flow rate of the air pump 1. By using two elastic connectors 4 to connect the two ends of the air pump 1 to the air pump bracket, the air pump 1 is suspended, providing sufficient support and limiting function while reducing the vibration transmitted from the air pump 1 to the air pump bracket, thereby improving the vibration damping effect of the entire air pump assembly. After the air pump 1 is installed, its edge will not protrude from the edge of the air pump bracket. Especially in handheld oxygen concentrators with a circular cross-section, the integrated installation of the air pump 1 occupies very little space, which is conducive to further reducing the cross-sectional size of the handheld oxygen concentrator and realizing the miniaturization of the handheld oxygen concentrator.

[0018] The elastic connector 4 can be made of rubber, silicone, or polyurethane with connecting ears 41 around its perimeter. All three materials possess good elasticity and stability, ensuring the vibration damping effect of the air pump 1 and providing a long service life. Furthermore, when determining the structural dimensions of the elastic connector 4, its supporting strength must be considered to ensure it can support the air pump 1, reduce amplitude, and achieve a balance between support and vibration damping. When installing the elastic connector 4 onto the air pump 1, limiting grooves 11 can be provided on the side walls at both ends of the air pump 1, and the elastic connector 4 can then be fitted onto the limiting grooves 11 for positioning and fixation. The elastic connector 4 is fixedly connected to the air pump bracket via the connecting ears 41 and screws passing through the connecting ears 41. Four connecting ears 41 can be provided, two at the top and two at the bottom, to ensure the reliability of the connection between the elastic connector 4 and the air pump bracket. In addition, when determining the installation position of the two elastic connectors 4 on the air pump 1, it is best to make the center of the two elastic connectors 4 and the center of gravity of the air pump 1 in the same vertical plane. A more preferred option is that the center of gravity of the air pump 1 is located in the center of the line connecting the centers of the two elastic connectors 4. This can make the installation of the air pump 1 more stable and further reduce the vibration of the air pump 1.

[0019] Regarding the structure of the air pump bracket, the preferred embodiment of this utility model is as follows: Figure 1 , Figure 2 As shown, the air pump bracket includes an upper bracket 2 and a lower bracket 3. The upper and lower ends of the elastic connector 4 are fixedly connected to the upper bracket 2 and the lower bracket 3, respectively. The upper bracket 2 includes a top plate 21 and an upper support column 22 disposed on the bottom surface of the top plate 21. The lower bracket 3 includes a bottom plate 31 and a lower support column 32 disposed on the top surface of the bottom plate 31. The upper support column 22 and the lower support column 32 are connected and fixedly joined. When installing the air pump 1, the air pump 1 is first placed in the lower bracket 3, then the upper bracket 2 is installed on the lower bracket 3, and finally the elastic connector 4 is fixedly connected to the upper bracket 2 and the lower bracket 3. The combination of upper and lower brackets facilitates the installation of the air pump 1 and reduces obstruction, allowing the surface of the air pump 1 to be exposed as much as possible, thereby improving the heat dissipation effect of the air pump 1.

[0020] In order to reduce the size of the entire oxygen generator, in addition to installing the air pump 1, the air pump bracket can also serve as the mounting base for other equipment. For example, mounting parts for installing the oxygen generating components and battery components can be set on the top surface of the top plate 21 and the bottom surface of the bottom plate 31, respectively, thereby reducing other support structures and improving the compactness of the equipment.

[0021] The upper support column 22 of the upper bracket 2 and the lower support column 32 of the lower bracket 3 can be connected and fixed by means of plug-in or screw connection. A preferred embodiment of this utility model is as follows: Figure 3As shown, the lower end of the upper support column 22 is provided with a threaded hole, and the lower support column 32 is a sleeve structure with a positioning ring 33 inside. The lower end of the upper support column 22 is inserted into the upper end of the lower support column 32 and abuts against the positioning ring 33. It is fixed together with the positioning ring 33 by screws, which can ensure the docking accuracy and connection reliability of the upper support column 22 and the lower support column 32.

[0022] To ensure the structural strength of the entire air pump support, the upper support column 22 and the lower support column 32 include at least three sets, which are evenly distributed along the circumference of the top plate 21 and the bottom plate 31. Ribs 5 are provided between the upper support column 22 and the top plate 21, and between the lower support column 32 and the bottom plate 31.

[0023] To fully utilize the space of the air pump bracket, a filter chamber 6 protruding towards the center of the air pump bracket is provided on the top surface of the base plate 31 or the bottom surface of the top plate 21. The filter chamber 6 is equipped with an air inlet grille 61 and a cover plate 7. By opening the cover plate 7, filter elements can be filled into the filter chamber 6. One end of the filter chamber 6 is connected to the air inlet of the air pump 1 via an air inlet pipe 8. Figure 4 As shown, since the base plate 31 is used to install the battery assembly, and the battery assembly is usually removable, it is preferable to place the filter chamber 6 on the base plate 31. The air intake grille 61 faces upwards with no obstruction above, ensuring unobstructed airflow. The cover plate 7 is located on the back of the base plate 31, and can be easily opened to replace the filter after the battery assembly is removed. When the air pump 1 is working, gas enters the filter chamber 6 from the air intake grille 61, and after being filtered by the filter, it enters the air pump 1 from the air intake pipe 8.

Claims

1. A vibration-damping air pump assembly for a handheld oxygen concentrator, comprising an air pump bracket and an air pump (1) mounted on the air pump bracket, characterized in that: The air pump (1) is an L-type single-cylinder compressed air pump. An elastic connector (4) is provided at each end of the air pump (1). The upper and lower ends of the elastic connector (4) are fixedly connected to the upper and lower ends of the air pump bracket, so that the air pump (1) is suspended in the air pump bracket. The elastic connector (4) is a rubber sleeve, silicone sleeve or polyurethane sleeve with connecting ears (41) around its periphery. The elastic connector (4) is fitted in the limiting groove (11) on the side wall of both ends of the air pump (1) and is fixedly connected to the air pump bracket by screws passing through the connecting ears (41).

2. The vibration-damping air pump assembly of the handheld oxygen concentrator as described in claim 1, characterized in that: The centers of the two elastic connectors (4) and the center of gravity of the air pump (1) are located in the same vertical plane.

3. The vibration-damping air pump assembly of the handheld oxygen concentrator as described in claim 2, characterized in that: The center of gravity of the air pump (1) is located at the center of the line connecting the centers of the two elastic connectors (4).

4. The vibration-damping air pump assembly of the handheld oxygen concentrator as described in any one of claims 1-3, characterized in that: The air pump bracket includes an upper bracket (2) and a lower bracket (3), and the upper and lower ends of the elastic connector (4) are fixedly connected to the upper bracket (2) and the lower bracket (3) respectively.

5. The vibration-damping air pump assembly of the handheld oxygen concentrator as described in claim 4, characterized in that: The upper support (2) includes a top plate (21) and an upper support column (22) disposed on the bottom surface of the top plate (21). The lower support (3) includes a bottom plate (31) and a lower support column (32) disposed on the top surface of the bottom plate (31). The upper support column (22) and the lower support column (32) are connected and fixed.

6. The vibration-damping air pump assembly of the handheld oxygen concentrator as described in claim 5, characterized in that: The top surface of the top plate (21) and the bottom surface of the bottom plate (31) are respectively provided with mounting parts for installing oxygen generating components and battery components.

7. The vibration-damping air pump assembly of the handheld oxygen concentrator as described in claim 5, characterized in that: The lower end of the upper support (22) is provided with a threaded hole. The lower support (32) is a sleeve structure with a positioning ring (33) inside. The lower end of the upper support (22) is inserted into the upper end of the lower support (32) and abuts against the positioning ring (33), and is fixed together with the positioning ring (33) by screws.

8. The vibration-damping air pump assembly of the handheld oxygen concentrator as described in claim 5, characterized in that: The upper support (22) and lower support (32) include at least three sets, and are evenly distributed along the circumference of the top plate (21) and the bottom plate (31). Ribs (5) are provided between the upper support (22) and the top plate (21), and between the lower support (32) and the bottom plate (31).

9. The vibration-damping air pump assembly of the handheld oxygen concentrator as described in claim 5, characterized in that: The top surface of the base plate (31) or the bottom surface of the top plate (21) is provided with a filter cavity (6) protruding towards the middle of the air pump bracket. The filter cavity (6) is provided with an air intake grille (61) and an openable cover plate (7). The filter is filled with filter elements. One end of the filter cavity (6) is connected to the air inlet of the air pump (1) through an air intake pipe (8).

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