Vehicle-mounted rear-mounted oxygen generator

Abstract

The invention discloses a vehicle-mounted rear-mounted oxygen generator, which belongs to the technical field of oxygen generators, and comprises an oxygen generating main machine, an oxygen generator, an oxygen generator, a controller and a controller, the mounting seat is used for limiting the oxygen generating main machine in a sinking area of an automobile trunk; the mounting seat is provided with a containing space and a limiting part; the containing space is used for containing the oxygen generating main machine and limiting the oxygen generating main machine to displace relative to the mounting seat; and the limiting part is used for being matched with the sinking area of the automobile trunk to limit the mounting seat to displace relative to the sinking area of the automobile trunk. According to the invention, the oxygen generating host can be stably mounted in the sinking area of the automobile trunk.

Description

Technical Field

[0001] This invention relates to the field of oxygen generator technology, and more particularly to a vehicle-mounted, aftermarket oxygen generator. Background Technology

[0002] With increasing health awareness and growing demand for specialized medical care, in-vehicle oxygen generators are widely used in scenarios such as long-distance driving, high-altitude travel, and commuting for patients with chronic diseases. Currently, most in-vehicle oxygen generators on the market are either front-mounted and fixed or handheld and portable. Front-mounted installations occupy driving space and affect operational safety, while portable models are prone to tipping over during vehicle bumps, exhibiting poor stability. To address these shortcomings, there is an urgent need for a rear-mounted in-vehicle oxygen generator to meet the oxygen supply needs in in-vehicle scenarios. Summary of the Invention

[0003] The purpose of this invention is to provide a vehicle-mounted, aftermarket oxygen generator to solve the above-mentioned problems.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A vehicle-mounted, aftermarket oxygen concentrator includes:

[0006] An oxygen generator used to separate oxygen from the air;

[0007] And, a mounting bracket that restricts the oxygen generator to the sunken area of ​​the car trunk;

[0008] The mounting base has a receiving space for accommodating the oxygen generator and limiting the displacement of the oxygen generator relative to the mounting base, and a limiting part for cooperating with the sunken area of ​​the car trunk to limit the displacement of the mounting base relative to the sunken area of ​​the car trunk.

[0009] Preferably, the mounting base includes a fixed base and a fixed top cover. The fixed base includes a fixing part and a limiting part, and the limiting part is disposed on the outside of the fixing part. The fixing part forms the receiving space, and the fixed top cover is disposed on the top of the fixing part to close the top opening of the receiving space.

[0010] The limiting part is disposed on the outer wall of opposite sides of the fixed base, and the bottom surface of the limiting part is coplanar with the bottom surface of the limiting part; a first limiting flange is provided around the top of the fixed base; a second limiting flange is provided around the bottom of the fixed cover, and the first limiting flange and the second limiting flange are sleeved together; an air inlet and an air outlet are provided on the side wall of the fixed part, and the air inlet and the air outlet are disposed on the same side wall or different side walls;

[0011] Correspondingly, the oxygen generator has an air inlet, a heat dissipation outlet, an oxygen outlet, and a nitrogen outlet. The air inlet corresponds to the air intake, and the heat dissipation outlet corresponds to the air outlet. The heat dissipation outlet is connected to a heat dissipation pipe, which passes through the air outlet and communicates with the outside. The oxygen outlet is connected to an oxygen pipe, which passes through the air inlet or the air outlet to supply oxygen. The nitrogen outlet is connected to a nitrogen pipe, which passes through the air inlet or the air outlet and communicates with the outside.

[0012] The top surface of the oxygen generator is equipped with a touch screen display, and the top surface of the fixed cover is provided with a through hole corresponding to the touch screen display.

[0013] Preferably, the bottom of the accommodating space is provided with an annular groove, and the mounting base further includes a plurality of support pads. The support pads are made of rigid material and include a support part for supporting the oxygen generator and an annular mounting part disposed on the bottom surface of the support part and cooperating with the annular groove. The bottom surface of the annular mounting part is supported on the bottom surface of the annular groove, and the outer wall of the annular mounting part abuts against the inner wall of the annular groove. A gap is left between the bottom surface of the support part and the bottom surface of the accommodating space.

[0014] The oxygen generator has several raised support feet at its bottom, which are supported by the support pad.

[0015] Preferably, the oxygen generator includes a housing, an airflow duct plate, a compressor, a molecular sieve tower, a two-position four-way reversing valve, a pressure equalizing valve, an oxygen tank, a solenoid switch valve, and a negative pressure fan;

[0016] The outer casing has a cavity. The air inlet and the heat dissipation outlet are disposed in the outer casing and communicate with the cavity. The outer casing has a first partition and a second partition. The first partition is disposed in the cavity and divides the cavity into an air inlet channel at the end near the air inlet. The second partition is disposed in the cavity, and the heat dissipation channel is formed between the first partition and the second partition. The first partition has an air inlet hole at the end away from the air inlet that communicates with the air inlet channel and the heat dissipation channel. The negative pressure fan is installed on the second partition. The air intake of the negative pressure fan is connected to the heat dissipation channel, and the air outlet of the negative pressure fan is connected to the outside through the heat dissipation outlet.

[0017] The airflow duct plate is fixed inside the outer shell and disposed on the top of the first partition and the second partition. An installation space is formed between the airflow duct plate and the top wall of the cavity. An air intake groove and a nitrogen exhaust groove are formed on the airflow duct plate. An air intake cover plate is provided at the opening of the air intake groove to close the opening of the air intake groove to form the air intake chamber. An air intake partition plate is provided inside the air intake groove. The air intake chamber is divided into several air intake chambers by the air intake partition plate. The air intake partition plate is provided with a first silencing hole, which connects each of the air intake chambers in series. The air intake chambers located at the first end and the last end are respectively provided with a first air intake interface and a first air outlet interface.

[0018] The opening of the nitrogen venting groove is provided with a nitrogen venting cover plate to close the opening of the nitrogen venting groove to form the nitrogen venting chamber. The nitrogen venting chamber is divided into several nitrogen venting chambers by a nitrogen venting partition. The nitrogen venting partition is provided with a second silencing hole, which connects each of the nitrogen venting chambers in series. The nitrogen venting chambers located at the first end and the last end are respectively provided with a first nitrogen inlet and a first nitrogen venting interface.

[0019] The compressor is installed in the heat dissipation channel, and the molecular sieve tower, two-position four-way reversing valve, pressure equalization valve, oxygen tank and electromagnetic switch valve are respectively installed in the installation space.

[0020] Preferably, one end of the airflow duct plate is provided with an airflow channel, and both ends of the airflow channel are provided with a second air inlet and a second air outlet; the other end of the airflow duct plate is provided with an oxygenflow channel, and the oxygenflow channel is provided with a first oxygen inlet, a first oxygen outlet and a pressure equalization interface.

[0021] The first air inlet, the first air outlet, and the first nitrogen inlet are located on one side of the airflow duct plate, while the first nitrogen outlet, the second air inlet, the second air outlet, the first oxygen inlet, and the first oxygen outlet are located on the other side of the airflow duct plate.

[0022] There are two air channels and two oxygen channels, and the air channels and oxygen channels correspond one-to-one.

[0023] The airflow duct plate is equipped with crisscrossing reinforcing ribs.

[0024] Preferably, the compressor has a positive pressure port and a negative pressure port. The positive pressure port of the compressor is used to provide pressurized air to the molecular sieve tower during the adsorption stage, and the negative pressure port of the compressor is used to evacuate the molecular sieve tower during the desorption stage.

[0025] The two-position four-way reversing valve is fixed to the other side of the airflow duct plate. The two-position four-way valve is connected between the second air inlet and the compressor, and is used to allow the two molecular sieve towers to switch between the positive pressure port and the negative pressure port of the compressor.

[0026] The pressure equalization valve is fixed to the other side of the airflow duct plate, and the pressure equalization valve is connected between the two pressure equalization ports;

[0027] The electromagnetic switch valve is fixed to the other side of the airflow duct plate, and the electromagnetic switch valve is connected to the first oxygen outlet port;

[0028] The oxygen tank is fixed to the other side of the airflow channel plate, and the oxygen tank is connected to the electromagnetic switch valve.

[0029] Preferably, the compressor has two shock-absorbing components at its bottom. Each shock-absorbing component includes a support base, a connecting seat, a spring, and a connecting plate. The connecting seats are respectively installed at the bottom of both ends of the connecting plate. The bottom of the connecting seat has a spring cavity. The upper end of the spring is inserted into the spring cavity and abuts against the top wall of the spring cavity. The outer wall of the spring abuts against the side wall of the spring cavity. The lower end of the support base has a support flange. The upper end of the support base is inserted into the spring from the bottom of the spring. The lower end of the spring abuts against the top surface of the support flange.

[0030] The bottom of the cavity is provided with a limiting groove corresponding to each of the supporting bases, and the supporting bases are respectively installed in the limiting grooves;

[0031] The connecting plate has a U-shaped structure, and the opening of the U-shaped structure faces outward;

[0032] The middle part of the connecting plate is recessed downwards, and the connecting plate is provided with mounting holes in the recessed area; the compressor is mounted on the connecting plate through the mounting holes;

[0033] The limiting groove is provided with an upwardly extending limiting post, and the middle part of the support base has a second through hole that runs vertically through it. The second through hole is sleeved on the outside of the limiting post, and the limiting post restricts the support base from moving in the horizontal direction.

[0034] The outer diameter of the connecting seat is smaller than the inner diameter of the limiting groove.

[0035] Preferably, the top surface of the connecting seat is provided with a connecting post, and the upper end of the connecting post extends outward to form a limiting flange; both ends of the connecting plate are respectively provided with connecting holes that mate with the connecting post, and the limiting flange restricts the connecting plate between the top surface of the connecting seat and the bottom surface of the limiting flange;

[0036] The connector is made of elastic material, and the connector post has a first through hole running vertically through it.

[0037] The upper part of the support base is a frustum-shaped structure, the support flange is located at the bottom of the frustum-shaped structure, and the outer wall of the support flange protrudes from the frustum-shaped structure; the inner diameter of the spring is the same as the outer diameter of the lower end of the frustum-shaped structure of the support base.

[0038] Preferably, there are multiple air inlets, and the air inlets are staggered from the air intake of the negative pressure fan;

[0039] The inner wall of the outer shell has honeycomb-shaped ribs, the air inlet is provided with an air inlet grille, the inner side of the air inlet grille is inclined away from the first partition, and the air inlet is provided with an air guide hood on the inner side of the air inlet.

[0040] Preferably, the outer shell includes a housing and a cover plate, the cover plate covering the top opening of the bottom housing, the airflow duct plate being fixedly installed on the housing, and the side of the airflow duct plate on which the molecular sieve tower is installed facing the cover plate.

[0041] One embodiment of the present invention has the following beneficial effects:

[0042] The mounting base has a receiving space for accommodating the oxygen generator. The oxygen generator is placed within this receiving space, and its outer contour fits tightly against the inner wall of the receiving space, thus constraining the generator in both the horizontal and vertical directions and preventing it from shifting or jumping out when the vehicle is bumpy. The mounting base adapts to both the generator and the vehicle, thereby achieving bidirectional stability of the oxygen generator during vehicle operation with a simple structure (the oxygen generator is stable relative to the mounting base, and the mounting base is stable relative to the vehicle), fundamentally solving the problem of vehicle-mounted fixation of hydrogen generators. Attached Figure Description

[0043] The accompanying drawings further illustrate the present invention, but the content of the drawings does not constitute any limitation on the present invention.

[0044] Figure 1 This is a schematic diagram of one embodiment of the present invention installed in the sunken area of ​​a car trunk;

[0045] Figure 2 This is an exploded view of the oxygen generator and mounting base according to one embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the support pad block installed in the annular groove according to one embodiment of the present invention;

[0047] Figure 4 This is a three-dimensional structural schematic diagram of an oxygen generator unit according to one embodiment of the present invention;

[0048] Figure 5 This is a three-dimensional structural schematic diagram of an airflow duct plate according to one embodiment of the present invention;

[0049] Figure 6 This is a schematic diagram of the airflow duct plate according to one embodiment of the present invention;

[0050] Figure 7 This is a schematic diagram of the airflow duct plate according to one embodiment of the present invention;

[0051] Figure 8 This is a schematic diagram of the heat dissipation airflow direction according to one embodiment of the present invention;

[0052] Figure 9 This is a schematic diagram of the structure of an oxygen generator host with part of its outer casing removed, according to one embodiment of the present invention;

[0053] Figure 10 This is a schematic diagram of the compressor installed on the shock absorption assembly according to one embodiment of the present invention;

[0054] Figure 11 This is a schematic diagram of the structure of a shock-absorbing component according to one embodiment of the present invention;

[0055] Figure 12 This is a schematic diagram of the installation structure of the support base and the connecting seat according to one embodiment of the present invention;

[0056] Figure 13 This is an exploded structural diagram of the support base and connecting seat according to one embodiment of the present invention;

[0057] Figure 14 This is a schematic diagram of the housing structure according to one embodiment of the present invention;

[0058] In the attached diagram: 100-mounting base, 1-fixed base, 11-fixing part, 12-limiting part, 13-accommodating space, 131-annular groove, 14-first limiting flange, 15-air inlet, 16-air outlet, 17-support pad, 171-support part, 172-annular mounting part, 2-fixed top cover, 22-through hole, 300-oxygen generator, 301-air inlet, 302-heat dissipation outlet, 303-oxygen outlet, 304- Nitrogen outlet, 305-heat dissipation pipe, 306-touchscreen display, 307-air inlet grille, 3-outer shell, 31-cavity, 32-first partition, 321-air inlet hole, 33-second partition, 34-air inlet channel, 35-heat dissipation channel, 36-limiting groove, 37-limiting post, 38-shell, 39-cover plate, 4-airflow duct plate, 41-air inlet groove, 42-nitrogen exhaust groove, 43-air inlet cover plate, 44-air inlet cavity, 45-air inlet Partition plate, 451-First silencer hole, 46-First air inlet port, 47-First air outlet port, 48-Nitrogen venting chamber, 49-Nitrogen venting cover plate, 410-Second silencer hole, 411-First nitrogen inlet port, 412-First nitrogen venting port, 413-Air flow channel, 414-Second air inlet port, 415-Second air outlet port, 416-Oxygen flow channel, 417-First oxygen inlet port, 418-First oxygen outlet port, 419-Pressure equalization port, 5- Compressor, 51-Positive pressure interface, 52-Negative pressure interface, 6-Molecular sieve tower, 7-Two-position four-way reversing valve, 8-Equalizing valve, 9-Oxygen tank, 10-Solenoid switch valve, 20-Negative pressure fan, 30-Shock absorption assembly, 301-Support base, 3011-Support flange, 3012-Second through hole, 302-Connecting seat, 3021-Spring cavity, 3022-Connecting column, 3023-Limiting flange, 303-Spring, 304-Connecting plate. Detailed Implementation

[0059] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0063] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0064] This embodiment of a vehicle-mounted, aftermarket oxygen concentrator includes:

[0065] Oxygen generator 300 used to separate oxygen from the air;

[0066] And, the mounting base 100 that restricts the oxygen generator 300 to the sunken area of ​​the car trunk;

[0067] The mounting base 100 has a receiving space 13 for accommodating the oxygen generator 300 and limiting the displacement of the oxygen generator 300 relative to the mounting base 100, and a limiting part 12 for cooperating with the sunken area of ​​the car trunk to limit the displacement of the mounting base 100 relative to the sunken area of ​​the car trunk.

[0068] The mounting base 100 has a receiving space 13 for accommodating the oxygen generator 300. The oxygen generator 300 is placed in the receiving space 13, and its outer contour fits tightly with the inner wall of the receiving space 13, so that the generator is constrained in the horizontal and vertical directions, preventing it from shifting or jumping out when the vehicle is bumpy. The mounting base 100 is also provided with a limiting part 12, which is located on the outside of the mounting base 100. Its shape and size are designed to match the contour of the sunken area of ​​the trunk of a specific car model (such as the edge of the groove, the protrusion, etc.). It should be noted that the sunken area of ​​the car trunk refers to the area under the trunk of the car that was originally used to place the spare tire. With the development of automobiles, more and more cars are no longer equipped with spare tires. Therefore, the sunken area of ​​the trunk that was originally used to place the spare tire is left empty. When the mounting base 100 is placed in the sunken area of ​​the trunk, the limiting part 12 restricts the overall movement of the mounting base 100 relative to the car body by interfering with or fitting with the car body structure, thereby fixing the mounting base 100 in the car body.

[0069] Mounting bracket 100 is compatible with both the main unit and the vehicle, thus achieving bidirectional stability of the oxygen generator 300 during vehicle operation with a simple structure (the oxygen generator 300 is stable relative to mounting bracket 100, and the mounting bracket 100 is stable relative to the vehicle), fundamentally solving the problem of vehicle-mounted fixation of the hydrogen generator.

[0070] Furthermore, the mounting base 100 includes a fixed base 1 and a fixed top cover 2. The fixed base 1 includes a fixing part 11 and a limiting part 12. The limiting part 12 is disposed on the outside of the fixing part 11. The fixing part 11 forms the receiving space 13. The fixed top cover 2 is disposed on the top of the fixing part 11 to close the top opening of the receiving space 13.

[0071] The fixed top cover 2 is detachably installed above the fixed part 11 to close the top opening of the receiving space 13. This split design makes it very convenient to put in and take out the main unit. Just open the top cover to facilitate the installation and maintenance of the equipment.

[0072] The limiting part 12 is disposed on the outer wall of opposite sides of the fixed base 1, and the bottom surface of the limiting part 12 is coplanar with the bottom surface of the limiting part 12; this makes the limiting part 12 as close as possible to the bottom of the fixed base 1, so that some space for placing items can be left between the two sides of the fixed base 1 and the inner wall of the trunk sink space, which can effectively improve the utilization rate of the trunk sink space.

[0073] The fixed base 1 has a first limiting flange 14 around its top perimeter; the fixed top cover 2 has a second limiting flange around its bottom perimeter. The first limiting flange 14 and the second limiting flange are fitted together (for example, the first flange is located on the outside and the second flange is located on the inside and inserted therein, or vice versa). This nested structure can automatically correct the closing position of the top cover, ensuring precise alignment between the top cover and the base. In addition, the fitting enhances the rigidity and sealing of the overall structure, reduces the relative displacement between the two parts and the possible abnormal noises when the vehicle is bumpy, and improves the overall quality and reliability of the product.

[0074] The side wall of the fixing part 11 is provided with an air inlet 15 and an air outlet 16, and the air inlet 15 and the air outlet 16 are provided on the same side wall or different side walls.

[0075] Correspondingly, the oxygen generator 300 has an air inlet 301, a heat dissipation outlet 302, an oxygen outlet 303, and a nitrogen outlet 304. The air inlet 301 corresponds to the air inlet 15, and the heat dissipation outlet 302 corresponds to the air outlet 16. The heat dissipation outlet 302 is connected to a heat dissipation pipe 305, which passes through the air outlet 16 and communicates with the outside. The heat dissipation pipe 305 passes through the air outlet 16 on the mounting base fixing part 11, directly guiding hot air to the outside of the vehicle, realizing directional discharge of hot air, greatly improving heat dissipation efficiency, and avoiding hot air backflow. The oxygen outlet 303 is connected to an oxygen pipe, which passes through the air inlet 15 or the air outlet 16 to supply oxygen. The nitrogen outlet 304 is connected to a nitrogen pipe, which passes through the air inlet 15 or the air outlet 16 and communicates with the outside.

[0076] Oxygen and nitrogen pipelines can be selected to exit the mounting base 100 from the air inlet 15 or the air outlet 16, depending on the convenience of the pipeline route. It should be noted that the nitrogen pipeline guides the nitrogen produced during the oxygen generation process to the outside of the vehicle to avoid nitrogen flowing back into the vehicle and affecting the oxygen generation effect.

[0077] After the oxygen generator 300 is placed in the mounting base 100, its air inlet 301 should be aligned with the air inlet 15 of the mounting base 100 to ensure that the oxygen generator 300 can draw in air from the outside when it is working. Its heat dissipation outlet 302 should be aligned with the air outlet 16 of the mounting base 100 to smoothly exhaust the hot air generated by the generator during operation to the outside of the mounting base 100, preventing heat from accumulating in the enclosed space and causing the generator to overheat. The oxygen outlet 303 and nitrogen outlet 304 are led out through connecting pipes, which can be led out of the mounting base 100 from the air inlet 15 or the air outlet 16 as needed.

[0078] Furthermore, the fixed base 1 and the fixed top cover 2 are made of EPP (expanded polypropylene) material; the bottom surface of the fixed base 1 is provided with several reinforcing ribs; these reinforcing ribs can be strip-shaped, grid-shaped or other regular or irregular shapes, the reinforcing ribs can increase the rigidity and bending resistance of the base, prevent it from deforming under force, and reduce the weight of the fixed base 1 itself.

[0079] EPP material has advantages such as light weight and good cushioning and energy absorption, and also has a certain degree of elasticity. Using EPP to manufacture the fixing base 1 and fixing cover 2 achieves overall structural lightweighting. Its excellent cushioning and energy absorption properties protect the oxygen generator 300 from impact damage during vehicle operation. Furthermore, the elasticity of EPP material allows the outer wall of the oxygen generator 300 to fit tightly against the inner wall of the accommodating space 13 when installed on the fixing base 1, preventing the oxygen generator 300 from shaking during vehicle movement. In addition, EPP material has good sound absorption properties, effectively suppressing the noise of the oxygen generator 300 during operation, reducing noise transmission into the vehicle interior, and thus improving the user experience of oxygen generation while driving.

[0080] The top surface of the oxygen generator 300 is provided with a touch screen display 306, and the top surface of the fixed cover 2 is provided with a through hole 22 corresponding to the touch screen display 306.

[0081] To allow operation of the oxygen generator 300 without opening the fixed top cover 2, a through hole 22 is provided on the top surface of the fixed top cover 2. The position and size of the through hole 22 correspond to the touch display screen 306 on the oxygen generator 300. When the fixed top cover 2 is closed, the user can directly see the display screen content and perform touch operations through the through hole 22, realizing convenient human-computer interaction of the oxygen generator 300 in a fully fixed state.

[0082] Furthermore, the bottom of the accommodating space 13 is provided with an annular groove 131, and the mounting base 100 also includes a plurality of support pads 17. The support pads 17 are made of rigid material and include a support portion 171 for supporting the oxygen generator 300 and an annular mounting portion 172 disposed on the bottom surface of the support portion 171 and cooperating with the annular groove 131. The bottom surface of the annular mounting portion 172 is supported on the bottom surface of the annular groove 131, and the outer wall of the annular mounting portion 172 abuts against the inner wall of the annular groove 131. A gap is left between the bottom surface of the support portion 171 and the bottom surface of the accommodating space 13.

[0083] The oxygen generator 300 has several protruding support feet at its bottom, which are supported by the support pad 17.

[0084] When the main unit is placed in the receiving space 13, its support feet rest precisely on the corresponding support pads 17. Thus, the bottom of the main unit does not contact the bottom surface of the receiving space 13, but rather rests on the support pads 17 via several support feet. The support pads 17 are made of a rigid material, such as metal or hard plastic. This ensures that the support pads 17 have sufficient compressive strength and rigidity to provide stable support for the oxygen generator 300. During operation, the vibrations generated by the oxygen generator 300 are transmitted to the fixed base 1 through the support pads 17. The fixed base 1, made of EPP material, has a buffering and energy-absorbing function, effectively eliminating vibrations and further reducing noise.

[0085] During installation, the annular mounting part 172 is embedded in the annular groove 131. The bottom surface of the annular mounting part 172 is supported on the bottom surface of the annular groove 131 to bear the weight of the main unit; its outer wall abuts against the inner wall of the annular groove 131, thereby being constrained in the horizontal direction to prevent the support pad 17 from shifting or rotating during use and to ensure that the position of the support point is always accurate.

[0086] Furthermore, the oxygen generator 300 includes a housing 3, an airflow duct plate 4, a compressor 5, a molecular sieve tower 6, a two-position four-way reversing valve 7, a pressure equalizing valve 8, an oxygen tank 9, an electromagnetic switch valve 10, and a negative pressure fan 20.

[0087] The outer casing 3 has a cavity 31. The air inlet 301 and the heat dissipation outlet 302 are disposed in the outer casing 3 and communicate with the cavity 31. The outer casing 3 has a first partition 32 and a second partition 33. The first partition 32 is disposed in the cavity 31 and divides the cavity 31 into an air inlet channel 34 at the end near the air inlet 301. The second partition 33 is disposed in the cavity 31, and the heat dissipation channel 35 is formed between the first partition 32 and the second partition 33. The first partition 32 has an air inlet hole 321 at the end away from the air inlet 301 that communicates with the air inlet channel 34 and the heat dissipation channel 35. The negative pressure fan 20 is installed on the second partition 33. The air intake of the negative pressure fan 20 is connected to the heat dissipation channel 35, and the air outlet of the negative pressure fan 20 is connected to the outside through the heat dissipation outlet 302.

[0088] The cavity 31 is divided into an air inlet channel 34 and a heat dissipation channel by the first partition 32 and the second partition 33. When air enters the heat dissipation channel from the outside, it needs to flow through the air inlet channel 34 first, and then enter the heat dissipation channel 35, making the airflow path similar to a snake to extend the airflow path. After the negative pressure fan 20 is started, a negative pressure zone is formed in the heat dissipation channel 35. Under the action of pressure difference, external cold air is drawn in from the air inlet 301, flows through the air inlet channel 34, and enters the heat dissipation channel 35 through the air inlet hole 321, fully exchanging heat with the compressor 5. Finally, the hot air is forcibly discharged by the negative pressure fan 20. Through the negative pressure diversion design, the forced circulation of cold air is realized, fundamentally solving the heat accumulation problem of positive pressure heat dissipation, and the heat dissipation effect is significantly improved.

[0089] The airflow duct plate 4 is fixed inside the outer shell 3 and is disposed on the top of the first partition plate 32 and the second partition plate 33. An installation space is formed between the airflow duct plate 4 and the top wall of the cavity 31. An air inlet groove 41 and a nitrogen discharge groove 42 are formed on the airflow duct plate 4. An air inlet cover plate 43 is provided at the opening of the air inlet groove 41 to close the opening of the air inlet groove 41 to form the air inlet chamber 44. An air inlet partition plate 45 is provided inside the air inlet groove 41. The air inlet chamber 44 is divided into several air inlet chambers 44 by the air inlet partition plate 45. The air inlet partition plate 45 is provided with a first silencing hole 451. The first silencing hole 451 connects each of the air inlet chambers 44 in series. The air inlet chambers 44 located at the first end and the last end are respectively provided with a first air inlet port 46 and a first air outlet port 47.

[0090] The opening of the nitrogen venting groove 42 is provided with a nitrogen venting cover plate 49 to close the opening of the nitrogen venting groove 42 to form the nitrogen venting chamber 48. The nitrogen venting chamber 48 is divided into several nitrogen venting chambers 48 by a nitrogen venting partition. The nitrogen venting partition is provided with a second silencing hole 410. The second silencing hole 410 connects each of the nitrogen venting chambers 48 in series. The nitrogen venting chambers 48 located at the first end and the last end are respectively provided with a first nitrogen inlet port 411 and a first nitrogen venting port 412.

[0091] When air enters the intake chamber 44 from the first intake port 46, it passes through multiple chambers separated by intake baffles 45. Each chamber is equivalent to an expansion chamber, where the airflow expands and slows down. At the same time, the airflow disturbance is obstructed and reflected and interfered when passing through the narrow first silencer hole 451, and its energy is effectively attenuated and absorbed, thereby significantly reducing intake noise. The nitrogen purging process works similarly. High-pressure nitrogen is depressurized and noise-reduced through the multi-stage nitrogen purging chamber 48 and then discharged from the first nitrogen purging port 412. By setting the intake chamber 44 and the nitrogen purging chamber 48, the noise of the oxygen generator 300 can be effectively reduced, and the whistling problem during the intake and exhaust processes can be suppressed.

[0092] The compressor 5 is installed in the heat dissipation channel 35, and the molecular sieve tower 6, the two-position four-way reversing valve 7, the pressure equalizing valve 8, the oxygen tank 9 and the electromagnetic switch valve 10 are respectively installed in the installation space.

[0093] Furthermore, one end of the airflow duct plate 4 is provided with an airflow duct 413, and both ends of the airflow duct 413 are provided with a second air inlet 414 and a second air outlet 415; the other end of the airflow duct plate 4 is provided with an oxygen flow duct 416, and the oxygen flow duct 416 is provided with a first oxygen inlet 417, a first oxygen outlet 418 and a pressure equalization interface 419.

[0094] The air flow channel 413 and oxygen flow channel 416 are integrated on the airflow duct plate 4, thereby optimizing the airflow layout, reducing external connecting pipes, making the system structure more compact, the airflow distribution more reasonable and efficient, and making assembly and maintenance more convenient.

[0095] The first air inlet 46, the first air outlet 47, and the first nitrogen inlet 411 are located on one side of the airflow duct plate 4, and the first nitrogen outlet 412, the second air inlet 414, the second air outlet 415, the first oxygen inlet 417, and the first oxygen outlet 418 are located on the other side of the airflow duct plate 4.

[0096] Each interface is distributed on both sides of the airflow duct plate 4, which can effectively reduce the problem of pipes needing to pass through the airflow duct plate 4 for connection. This greatly facilitates the internal wiring and component installation of the oxygen generator 300, reduces pipe crossings and bends, and makes the internal structure of the whole machine cleaner, more compact, and easier to produce and maintain.

[0097] There are two air channels 413 and two oxygen channels 416, and the air channels 413 and oxygen channels 416 correspond one-to-one.

[0098] The design of the two flow channels allows the integrated airflow channel plate 4 to simultaneously install two molecular sieve towers 6. Compressed air can be alternately supplied to the two molecular sieve towers 6 (one in the adsorption oxygen production state and the other in the desorption nitrogen removal state) to achieve continuous oxygen production.

[0099] The airflow duct plate is equipped with crisscrossing reinforcing ribs.

[0100] The reinforcing ribs significantly improve the rigidity and strength of the airflow duct plate 4, ensuring the dimensional stability and structural reliability of the airflow duct plate 4 during long-term use, and preventing sealing failure or loosening of connections due to deformation.

[0101] Furthermore, the compressor 5 has a positive pressure port 51 and a negative pressure port 52. The positive pressure port 51 of the compressor 5 is used to provide pressurized air to the molecular sieve tower 6 during the adsorption stage, and the negative pressure port 52 of the compressor 5 is used to evacuate the molecular sieve tower 6 during the desorption stage.

[0102] The two-position four-way reversing valve 7 is fixed to the other side of the airflow duct plate 4. The two-position four-way valve is connected between the second air inlet port 414 and the compressor 5, and is used to allow the two molecular sieve towers 6 to switch between the positive pressure port 51 and the negative pressure port 52 of the compressor 5.

[0103] The pressure equalization valve 8 is fixed to the other side of the airflow duct plate 4, and the pressure equalization valve 8 is connected between the two pressure equalization ports 419;

[0104] The electromagnetic switch valve 10 is fixed to the other side of the airflow duct plate 4, and the electromagnetic switch valve 10 is connected to the first oxygen outlet port 418.

[0105] The oxygen tank 9 is fixed to the other side of the airflow channel plate, and the oxygen tank 9 is connected to the electromagnetic switch valve 10.

[0106] The airflow duct plate 4, as the core gas path platform, can house most of the gas path components in the oxygen generation process, making the gas path system very compact and increasing the internal space utilization of the oxygen generator 300. Furthermore, the airflow duct plate 4 effectively reduces the length of the pipeline, resulting in less air resistance in the pipeline. The compressor 5 is a horizontally opposed four-cylinder compressor, with two cylinders connected to the positive pressure interface 51 to provide compressed air, and the other two cylinders connected to the negative pressure interface 52 for negative pressure vacuuming. The compressor 5 provides airflow power by compressing air and introducing it into the molecular sieve tower 6 for adsorption, and by vacuuming and releasing the adsorbed molecular sieve tower 6. (Two-way four-way) The reversing valve 7 controls the switching of the airflow of the compressor 5 between the two molecular sieve towers 6; the pressure equalization valve 8 balances the pressure before switching the molecular sieve towers 6, and the produced oxygen is stored in the oxygen tank 9. The output is controlled by the electromagnetic switch valve 10. The oxygen production process and principle are not within the scope of protection of this invention. The oxygen production process and principle can refer to the existing VPSA oxygen production. The produced oxygen is stored in the oxygen tank 9, which has a buffering effect to make the oxygen flow and pressure more stable. It can be understood that the oxygen outlet of the oxygen tank 9 is connected to the oxygen outlet 303 of the oxygen generator 300. The compressor 5 desorbs nitrogen from the molecular sieve tower 6 through the negative pressure interface 52 and discharges it from the nitrogen outlet 304.

[0107] Furthermore, the compressor 5 has two shock-absorbing components 30 at its bottom. Each shock-absorbing component 30 includes a support base 301, a connecting seat 302, a spring 303, and a connecting plate 304. The connecting seats 302 are respectively installed at the bottom of both ends of the connecting plate 304. The bottom of the connecting seat 302 has a spring cavity 3021. The upper end of the spring 303 is inserted into the spring cavity 3021 and abuts against the top wall of the spring cavity 3021. The outer wall of the spring 303 abuts against the side wall of the spring cavity 3021. The lower end of the support base 301 has a support flange 3011. The upper end of the support base 301 is inserted into the spring 303 from the bottom of the spring 303. The lower end of the spring 303 abuts against the top surface of the support flange 3011.

[0108] By connecting the spring 303 to the top wall of the spring cavity 3021 and the support flange 3011, the spring 303 can absorb vertical vibration by axial compression deformation when compressed, and also absorb horizontal vibration by radial elastic deformation of the spring coil. When the compressor 5 is installed on the connecting plate 304, the force is transmitted to the spring 303 through the connecting seat 302. Under the radial constraint of the spring cavity 3021 and the axial support of the support flange 3011, when the compressor 5 vibrates, the spring 303 absorbs the vibration by generating multi-directional deformation, thereby achieving a multi-directional shock absorption effect similar to an airbag, and its service life and reliability are far superior to those of airbag shock absorption structures.

[0109] The bottom of the cavity 31 is provided with a limiting groove 36 corresponding to the support base 301, and the support base 301 is respectively installed in the limiting groove 36.

[0110] The limiting groove 36 limits the support base 301, making it difficult for the support base 301 to move within the base. The two shock-absorbing components 30 are connected to the compressor 5 through the connecting plate 304, thereby supporting the compressor 5. The shock-absorbing components 30 are evenly distributed near the boundary of the compressor 5, effectively reducing the sway generated during the operation of the compressor 5. When the compressor 5 is running, the spring 303 absorbs the vibration of the compressor 5 through longitudinal and lateral elastic deformation, reducing the shaking of the compressor 5 and making the compressor 5 more stable.

[0111] The connecting plate 304 has a U-shaped structure, and the opening of the U-shaped structure faces outward;

[0112] This configuration allows the two ends of the connecting plate 304 to be as close to the outside as possible, thereby increasing the distance between the support bases 301 of the two shock-absorbing components 30 and shifting the fulcrum of the compressor 5 outward. In the scenario of an on-board oxygen concentrator, this can better ensure the stability of the compressor 5, and the compressor 5 is less likely to overturn in driving scenarios such as vehicle turning.

[0113] The middle part of the connecting plate 304 is recessed downwards, and the connecting plate 304 is provided with mounting holes in the recessed area; the compressor 5 is mounted on the connecting plate 304 through the mounting holes;

[0114] The compressor 5 is fixed to the connecting plate 304 through the mounting holes. The recess in the middle of the connecting plate 304 can effectively lower the center of gravity of the compressor 5, making the compressor 5 more stable during vehicle operation.

[0115] The limiting groove 36 is provided with an upwardly extending limiting post 37, and the middle part of the support base has a second through hole 3012 that runs vertically through the middle. The second through hole 3012 is sleeved on the outside of the limiting post 37, and the limiting post 37 restricts the support base from moving in the horizontal direction.

[0116] The outer diameter of the connecting seat 302 is smaller than the inner diameter of the limiting groove 36.

[0117] By cooperating with the limiting post 37 and the second through hole 3012, the support seat can be confined within the limiting groove 36, and a certain space can be left between the outer wall of the support seat and the limiting groove 36 so that when the spring 303 is under extreme compression, the lower end of the connecting seat 302 can abut against the top surface of the limiting flange 3023 of the support seat to obtain a better support effect.

[0118] Furthermore, the top surface of the connecting seat 302 is provided with a connecting post 3022, and the upper end of the connecting post 3022 extends outward to form a limiting flange 3023; both ends of the connecting plate 304 are respectively provided with connecting holes that cooperate with the connecting post 3022, and the limiting flange 3023 restricts the connecting plate 304 between the top surface of the connecting seat 302 and the bottom surface of the limiting flange 3023;

[0119] The connecting column 3022 serves as a horizontal limiter for the connecting plate 304, allowing horizontal vibrations received by the connecting plate 304 to be transmitted to the connecting seat 302 through the connecting column 3022, and the horizontal vibrations are absorbed by the elastic deformation of the spring 303. The limiting flange 3023 restricts the connecting plate 304, making it difficult for the connecting plate 304 to detach from the connecting seat 302, so that the connecting seat 302 and the connecting plate 304 can be fixedly installed, thereby ensuring that the compressor 5 installed on the connecting plate 304 can operate stably.

[0120] The connecting seat 302 is made of elastic material, and the connecting post 3022 is provided with a first through hole that runs vertically through the top and bottom.

[0121] The first through hole provides space for the limiting flange 3023 and the connecting post 3022 to deform inward, so that the limiting flange 3023 can be squeezed and deformed and pass through the connecting hole, thereby realizing the installation of the connecting post 3022 and the connecting hole.

[0122] The upper part of the support base is a frustum-shaped structure, and the support flange 3011 is located at the bottom of the frustum-shaped structure in the upper part, and the outer wall of the support flange 3011 protrudes from the frustum-shaped structure; the inner diameter of the spring 303 is the same as the outer diameter of the lower end of the frustum-shaped structure of the support base.

[0123] The frustum-shaped structure is smaller at the top and larger at the bottom, which allows for a certain space between the upper part of the support and the spring cavity 3021 of the connecting seat 302. This allows the connecting seat 302 to move horizontally relative to the upper part of the support, enabling the spring 303 to absorb horizontal vibrations. In addition, the frustum-shaped structure of the support can also radially limit the spring 303, preventing the lower end of the spring 303 from slipping relative to the support.

[0124] Furthermore, there are multiple air inlets 321, and the air inlets 321 are arranged in a staggered manner with the air intake of the negative pressure fan 20;

[0125] The staggered arrangement prevents the airflow from flowing directly to the negative pressure fan 20 when it enters the heat dissipation channel 35 from the air inlet 321. Instead, it generates flow around and turbulence within the heat dissipation channel 35, increasing the contact time and contact area between the airflow and the compressor 5. This arrangement enhances airflow disturbance, improves heat exchange efficiency, avoids airflow short circuits, and makes the temperature in each area of ​​the heat dissipation channel 35 more uniform.

[0126] The inner wall of the outer casing 3 has honeycomb-shaped ribs. These ribs help to disrupt the boundary layer of airflow, enhance turbulence, and improve the heat dissipation efficiency of the compressor 5. In addition, the honeycomb-shaped ribs also have a sound-absorbing effect, as sound waves cancel each other out by reflecting sound within the honeycomb structure, thereby reducing noise.

[0127] The air inlet is provided with an air inlet grille 307, the inner side of which is inclined away from the first partition 32, and the air inlet is provided with an air guide hood on the inner side of the air inlet.

[0128] The air intake grille 307 and the air guide can guide the airflow, allowing the air to enter along the side away from the first partition 32, thereby increasing the cooling effect of the external air on the components in the air intake channel 34; in addition, the air guide can block the noise generated by the compressor 5 to a certain extent, thereby reducing the leakage of the operating noise of the compressor 5 and having a certain noise reduction effect.

[0129] Furthermore, the outer shell 3 includes a shell 38 and a cover plate 39. The cover plate 39 covers the top opening of the bottom shell. The airflow duct plate 4 is fixedly installed on the shell 38, and the side of the airflow duct plate 4 on which the molecular sieve tower 6 is installed faces the cover plate 39.

[0130] Cover plate 39 covers the opening side of housing 38 via clips, screws, or magnets. Integrated airflow duct plate 4 is fixedly installed on the inner wall of housing 38 via brackets or screws. Molecular sieve tower 6, two-position four-way reversing valve 7, equalizing valve 8, oxygen tank 9, and solenoid switch valve 10 are all installed on the side of airflow duct plate 4 facing cover plate 39, located in the space between cover plate 39 and airflow duct plate 4. This layout allows all major components of the gas circuit system to be clearly seen after opening cover plate 39, facilitating installation, commissioning, testing, or replacement. Airflow duct plate 4 serves as a support and integration platform, greatly facilitating the assembly, daily maintenance, and component inspection of oxygen generator 300. When maintenance of gas circuit components is required, only cover plate 39 needs to be opened, without disassembling the entire unit or dealing with complex and scattered pipelines, thus improving maintainability.

[0131] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0132] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A vehicle-mounted, aftermarket oxygen concentrator, characterized in that, include: An oxygen generator used to separate oxygen from the air; And, a mounting bracket that restricts the oxygen generator to the sunken area of ​​the car trunk; The mounting base has a receiving space for accommodating the oxygen generator and limiting the displacement of the oxygen generator relative to the mounting base, and a limiting part for cooperating with the sunken area of ​​the car trunk to limit the displacement of the mounting base relative to the sunken area of ​​the car trunk.

2. The vehicle-mounted, aftermarket oxygen concentrator according to claim 1, characterized in that, The mounting base includes a fixed base and a fixed top cover. The fixed base includes a fixing part and a limiting part, and the limiting part is located on the outside of the fixing part. The fixing part forms the receiving space, and the fixed top cover is placed on top of the fixing part to close the top opening of the receiving space. The limiting part is disposed on the outer wall of opposite sides of the fixed base, and the bottom surface of the limiting part is coplanar with the bottom surface of the limiting part; a first limiting flange is provided around the top of the fixed base; a second limiting flange is provided around the bottom of the fixed cover, and the first limiting flange and the second limiting flange are sleeved together; an air inlet and an air outlet are provided on the side wall of the fixed part, and the air inlet and the air outlet are disposed on the same side wall or different side walls; Correspondingly, the oxygen generator has an air inlet, a heat dissipation outlet, an oxygen outlet, and a nitrogen outlet. The air inlet corresponds to the air intake, and the heat dissipation outlet corresponds to the air outlet. The heat dissipation outlet is connected to a heat dissipation pipe, which passes through the air outlet and communicates with the outside. The oxygen outlet is connected to an oxygen pipe, which passes through the air inlet or the air outlet to supply oxygen. The nitrogen outlet is connected to a nitrogen pipe, which passes through the air inlet or the air outlet and communicates with the outside. The top surface of the oxygen generator is equipped with a touch screen display, and the top surface of the fixed cover is provided with a through hole corresponding to the touch screen display.

3. A vehicle-mounted, aftermarket oxygen concentrator according to claim 1, characterized in that, The bottom of the accommodating space is provided with an annular groove. The mounting base also includes several support pads. The support pads are made of rigid material. Each support pad includes a support part for supporting the oxygen generator and an annular mounting part disposed on the bottom surface of the support part and cooperating with the annular groove. The bottom surface of the annular mounting part is supported on the bottom surface of the annular groove, and the outer wall of the annular mounting part abuts against the inner wall of the annular groove. A gap is left between the bottom surface of the support part and the bottom surface of the accommodating space. The oxygen generator has several raised support feet at its bottom, which are supported by the support pad.

4. A vehicle-mounted, aftermarket oxygen concentrator according to claim 1, characterized in that, The oxygen generator unit includes a casing, an airflow duct plate, a compressor, a molecular sieve tower, a two-position four-way reversing valve, a pressure equalizing valve, an oxygen tank, a solenoid switch valve, and a negative pressure fan. The outer casing has a cavity, and the air inlet and heat dissipation outlet are disposed in the outer casing and communicate with the cavity. The outer casing is provided with a first partition and a second partition. The first partition is disposed in the cavity and divides the cavity into an air inlet channel at the end near the air inlet. The second partition is disposed in the cavity, and the heat dissipation channel is formed between the first partition and the second partition. The first partition has an air inlet hole at the end away from the air inlet that communicates with the air inlet channel and the heat dissipation channel. The negative pressure fan is installed on the second partition, the air intake of the negative pressure fan is connected to the heat dissipation channel, and the air outlet of the negative pressure fan is connected to the outside through the heat dissipation outlet. The airflow duct plate is fixed inside the outer shell and disposed on the top of the first partition and the second partition. An installation space is formed between the airflow duct plate and the top wall of the cavity. An air intake groove and a nitrogen exhaust groove are formed on the airflow duct plate. An air intake cover plate is provided at the opening of the air intake groove to close the opening of the air intake groove to form the air intake chamber. An air intake partition plate is provided inside the air intake groove. The air intake chamber is divided into several air intake chambers by the air intake partition plate. The air intake partition plate is provided with a first silencing hole, which connects each of the air intake chambers in series. The air intake chambers located at the first end and the last end are respectively provided with a first air intake interface and a first air outlet interface. The opening of the nitrogen venting groove is provided with a nitrogen venting cover plate to close the opening of the nitrogen venting groove to form the nitrogen venting chamber. The nitrogen venting chamber is divided into several nitrogen venting chambers by a nitrogen venting partition. The nitrogen venting partition is provided with a second silencing hole, which connects each of the nitrogen venting chambers in series. The nitrogen venting chambers located at the first end and the last end are respectively provided with a first nitrogen inlet and a first nitrogen venting interface. The compressor is installed in the heat dissipation channel, and the molecular sieve tower, two-position four-way reversing valve, pressure equalization valve, oxygen tank and electromagnetic switch valve are respectively installed in the installation space.

5. A vehicle-mounted, rear-mounted oxygen generator according to claim 4, characterized in that, One end of the airflow duct plate is provided with an airflow channel, and both ends of the airflow channel are provided with a second air inlet and a second air outlet; the other end of the airflow duct plate is provided with an oxygenflow channel, and the oxygenflow channel is provided with a first oxygen inlet, a first oxygen outlet and a pressure equalization interface. The first air inlet, the first air outlet, and the first nitrogen inlet are located on one side of the airflow duct plate, while the first nitrogen outlet, the second air inlet, the second air outlet, the first oxygen inlet, and the first oxygen outlet are located on the other side of the airflow duct plate. There are two air channels and two oxygen channels, and the air channels and oxygen channels correspond one-to-one. The airflow duct plate is equipped with crisscrossing reinforcing ribs.

6. A vehicle-mounted, aftermarket oxygen concentrator according to claim 5, characterized in that, The compressor has a positive pressure port and a negative pressure port. The positive pressure port of the compressor is used to provide pressurized air to the molecular sieve tower during the adsorption stage, and the negative pressure port of the compressor is used to evacuate the molecular sieve tower during the desorption stage. The two-position four-way reversing valve is fixed to the other side of the airflow duct plate. The two-position four-way valve is connected between the second air inlet and the compressor, and is used to allow the two molecular sieve towers to switch between the positive pressure port and the negative pressure port of the compressor. The pressure equalization valve is fixed to the other side of the airflow duct plate, and the pressure equalization valve is connected between the two pressure equalization ports; The electromagnetic switch valve is fixed to the other side of the airflow duct plate, and the electromagnetic switch valve is connected to the first oxygen outlet port; The oxygen tank is fixed to the other side of the airflow channel plate, and the oxygen tank is connected to the electromagnetic switch valve.

7. A vehicle-mounted, aftermarket oxygen concentrator according to claim 4, characterized in that, The compressor has two shock-absorbing components at its bottom. Each shock-absorbing component includes a support base, a connecting seat, a spring, and a connecting plate. The connecting seats are respectively installed at the bottom of both ends of the connecting plate. The bottom of the connecting seat has a spring cavity. The upper end of the spring is inserted into the spring cavity and abuts against the top wall of the spring cavity. The outer wall of the spring abuts against the side wall of the spring cavity. The lower end of the support base has a support flange. The upper end of the support base is inserted into the spring from the bottom of the spring. The lower end of the spring abuts against the top surface of the support flange. The bottom of the cavity is provided with a limiting groove corresponding to each of the supporting bases, and the supporting bases are respectively installed in the limiting grooves; The connecting plate has a U-shaped structure, and the opening of the U-shaped structure faces outward; The middle part of the connecting plate is recessed downwards, and the connecting plate is provided with mounting holes in the recessed area; the compressor is mounted on the connecting plate through the mounting holes; The limiting groove is provided with an upwardly extending limiting post, and the middle part of the support base has a second through hole that runs vertically through it. The second through hole is sleeved on the outside of the limiting post, and the limiting post restricts the support base from moving in the horizontal direction. The outer diameter of the connecting seat is smaller than the inner diameter of the limiting groove.

8. A vehicle-mounted, aftermarket oxygen concentrator according to claim 7, characterized in that, The top surface of the connecting seat is provided with a connecting post, and the upper end of the connecting post extends outward to form a limiting flange; both ends of the connecting plate are respectively provided with connecting holes that mate with the connecting post, and the limiting flange restricts the connecting plate between the top surface of the connecting seat and the bottom surface of the limiting flange. The connecting seat is made of elastic material, and the connecting post has a first through hole running vertically through it; The upper part of the support base is a frustum-shaped structure, the support flange is located at the bottom of the frustum-shaped structure, and the outer wall of the support flange protrudes from the frustum-shaped structure; the inner diameter of the spring is the same as the outer diameter of the lower end of the frustum-shaped structure of the support base.

9. A vehicle-mounted, aftermarket oxygen concentrator according to claim 4, characterized in that, The air inlet is multiple, and the air inlet is staggered from the air intake of the negative pressure fan; The inner wall of the outer shell has honeycomb-shaped ribs, the air inlet is provided with an air inlet grille, the inner side of the air inlet grille is inclined away from the first partition, and the air inlet is provided with an air guide hood on the inner side of the air inlet.

10. A vehicle-mounted, aftermarket oxygen concentrator according to claim 5, characterized in that, The outer casing includes a shell and a cover plate. The cover plate covers the top opening of the bottom shell. The airflow duct plate is fixedly installed on the shell, and the side of the airflow duct plate on which the molecular sieve tower is installed faces the cover plate.

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