Vehicle-mounted oxygen generation system

Abstract

The utility model discloses a vehicle-mounted oxygen generation system, which comprises a compressor assembly and a molecular tower assembly, the bottom of the compressor assembly is mounted in an automobile through a damping base, and the molecular tower assembly comprises two molecular towers arranged side by side and molecular sieves arranged in the molecular towers. The compressor assembly comprises an integrated valve body and an ECU assembly arranged on one side of the integrated valve body, a compression cavity is formed in the integrated valve body, a booster pump assembly is installed in the compression cavity, and a driving motor matched with the booster pump assembly is installed on one side of the integrated valve body. A compression cavity in the integrated valve body is communicated with the air inlet ends of two molecular towers of the molecular tower assembly through a first air pipe and a second air pipe respectively, the air outlet end of the molecular tower assembly is communicated with the integrated valve body through a third air pipe, and the integrated valve body is connected with at least one oxygen exhaust pipe and an air inlet pipe. The vehicle oxygen generator can solve the problems that an existing vehicle oxygen generator is single in function, not high in oxygen generation efficiency, large in loading and using noise and poor in heat dissipation.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive oxygen generation devices, specifically a vehicle-mounted oxygen generation system. Background Technology

[0002] In recent years, intelligent driving and comfort have become hot topics in the automotive industry. Simultaneously, vehicle demands are constantly increasing, and vehicle functions are integrating various features into the cabin to meet higher human-centered requirements. Cabin health management has also become a crucial consideration for automobiles. The demand for oxygen is increasing in daily driving, such as during high-altitude activities, outdoor oxygen use, and emergency medical care. Therefore, many vehicles are equipped with oxygen concentrators. However, existing car oxygen concentrators are often modified versions of conventional medical oxygen concentrators, resulting in large sizes, numerous tubing, and limitations in modular installation within vehicles. Furthermore, current car oxygen concentrators have relatively limited functionality, cannot adjust oxygen production modes according to actual needs, have low oxygen production efficiency, are noisy during operation, and suffer from poor heat dissipation. Utility Model Content

[0003] This invention provides a vehicle-mounted oxygen generation system that can solve the problems of existing vehicle oxygen generators, such as limited functionality, low oxygen generation efficiency, high noise levels, and poor heat dissipation.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a vehicle-mounted oxygen generation system, comprising a compressor assembly and a molecular tower assembly. The bottom of the compressor assembly is mounted inside a vehicle via a shock-absorbing base. The molecular tower assembly includes two molecular towers arranged side-by-side and a molecular sieve disposed within each molecular tower. The compressor assembly includes an integrated valve body and an ECU assembly disposed on one side of the integrated valve body. A compression chamber is provided inside the integrated valve body, and a booster pump assembly is installed within the compression chamber. A drive motor matching the booster pump assembly is installed on one side of the integrated valve body. The compression chamber inside the integrated valve body is connected to a first gas... The first and second gas pipes are respectively connected to the inlet ends of the two molecular towers of the molecular tower assembly. The outlet end of the molecular tower assembly is connected to the integrated valve body through the third gas pipe. The integrated valve body is connected to at least one oxygen exhaust pipe and one intake pipe. The compressor assembly and the molecular tower assembly are installed separately, which can be installed close to each other or far apart, which is more flexible. At the same time, the molecular tower assembly uses two molecular towers to produce oxygen. The two molecular towers can produce oxygen at the same time or alternately to improve oxygen production efficiency. By integrating the ECU component, the oxygen production mode can be flexibly adjusted to meet different oxygen supply needs.

[0005] Preferably, the integrated valve body is connected to a fourth air pipe with both ends connected to the compression chamber inside the integrated valve body. The fourth air pipe is equipped with a heat dissipation component to dissipate the high temperature and high pressure gas generated by the integrated valve body, thereby reducing the heat generated by the oxygen generation system inside the car.

[0006] Preferably, the heat dissipation component includes a heat sink and a cooling fan installed on one side of the heat sink. The cooling fan can increase air circulation and improve heat dissipation.

[0007] Preferably, the booster pump assembly includes a pair of piston arms located in the compression chamber. An eccentric block is connected to the middle of the pair of piston arms. The eccentric block is connected to the main shaft of the drive motor. The first gas pipe and the second gas pipe are respectively connected to the compression chambers at both ends of the pair of piston arms. Through the cooperation of the pair of piston arms, the drive motor and the eccentric block, the continuous output of compressed gas can be achieved. The compression chambers at both ends supply gas to the two molecular towers respectively, thereby improving the oxygen production efficiency.

[0008] Preferably, a filter is installed on the air intake pipe to ensure the cleanliness of the incoming air.

[0009] Preferably, an oxygen chamber is provided inside the molecular tower assembly between the molecular towers, the third gas pipe is connected to the oxygen chamber, a spring is installed at the end of the molecular tower away from the gas inlet to abut against the molecular sieve, and a one-way valve is provided between the end of the molecular tower near the spring and the oxygen chamber.

[0010] Preferably, the molecular sieve is equipped with filter cotton at at least one end, which can further filter the gas flowing through the molecular sieve.

[0011] Preferably, the ECU assembly includes an ECU housing, a cover plate located on one side of the ECU housing, and a control unit located inside the ECU housing. The control unit is electrically connected to the drive motor. Multiple control valves inserted into the integrated valve body are installed inside the ECU housing. The control valves can switch and control the flow of air in the integrated valve body to adapt to different oxygen supply modes.

[0012] Preferably, an oxygen sensor connected to the oxygen exhaust pipe is installed inside the ECU housing. The oxygen sensor is electrically connected to the control unit and can monitor the pressure, concentration, and flow rate of the discharged oxygen in real time, and feed back to the booster pump control system for real-time adjustment.

[0013] Preferably, the shock-absorbing base includes a base plate and multiple shock-absorbing connecting pads installed around the base plate. It is connected to the vehicle by fixing bolts passing through the shock-absorbing connecting pads. An upper shock-absorbing pad and a lower shock-absorbing pad are respectively installed on the upper and lower sides of the middle of the base plate. Multiple connecting bolts connected to the integrated valve body are vertically arranged through the upper and lower shock-absorbing pads. By setting the upper and lower shock-absorbing pads, the base plate can be clamped to ensure a firm shock-absorbing connection between the integrated valve body and the base plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] With a simple and reliable structure, the compressor assembly and molecular tower assembly are installed separately, allowing for flexible installation either close to or far apart. The molecular tower assembly uses two molecular towers for oxygen production, which can produce oxygen simultaneously or alternately, improving efficiency. An integrated ECU component allows for flexible adjustment of the oxygen production mode to meet different oxygen supply needs. A separate heat dissipation component effectively cools the high-temperature, high-pressure gas generated by the compressor assembly. A uniquely structured vibration-damping base further reduces noise and vibration during operation of the booster pump assembly. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 3 This is a top view of the structure of this utility model;

[0019] Figure 4 for Figure 3 AA-direction sectional view of the structure;

[0020] Figure 5 for Figure 4 BB-direction sectional view of the structure;

[0021] Figure 6 This is a cross-sectional view of the integrated valve body of this utility model;

[0022] Figure 7 This is a three-dimensional structural diagram of the shock-absorbing base of this utility model;

[0023] Figure 8 This is a three-dimensional structural diagram of the shock-absorbing base of this utility model.

[0024] Figure label:

[0025] 1. Compressor assembly; 11. Fourth gas pipe; 12. Heat dissipation component; 13. First gas pipe; 14. Second gas pipe; 15. Oxygen sensor; 2. Integrated valve body; 21. Opposite piston arm; 22. Eccentric block; 23. Compression chamber; 24. Drive motor; 3. Drive motor; 4. Vibration damping base; 41. Base plate; 42. Connecting bolt; 43. Upper vibration damping pad; 44. Vibration damping connecting pad; 45. Arch; 46. Lower vibration damping pad; 5. ECU assembly; 51. Cover plate; 52. ECU housing; 6. Molecular tower assembly; 61. Molecular sieve; 62. Oxygen chamber; 63. Spring; 64. One-way valve; 65. Filter cotton; 7. Filter; 8. Inlet pipe; 9. Oxygen exhaust pipe; 10. Third gas pipe. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] like Figure 1-8 As shown, this utility model addresses the problems of existing vehicle oxygen concentrators, such as limited functionality, low oxygen production efficiency, high noise levels, and poor heat dissipation. It provides the following technical solution: A vehicle-mounted oxygen generation system includes a compressor assembly 1 and a molecular tower assembly 6. The compressor assembly 1 is mounted inside the vehicle via a shock-absorbing base 4. The molecular tower assembly 6 includes two molecular towers arranged side-by-side and a molecular sieve 61 disposed within each molecular tower. The compressor assembly 1 includes an integrated valve body 2 and an ECU component 5 disposed on one side of the integrated valve body 2. The integrated valve body 2 has a compression chamber 23 inside, and a booster pump assembly is installed within the compression chamber 23. A drive motor 24, matching the booster pump assembly, is installed on one side of the integrated valve body 2. The compression chamber 23 inside the integrated valve body 2 is connected to the air inlet ends of the two molecular towers of the molecular tower assembly 6 through the first air pipe 13 and the second air pipe 14 respectively. The air outlet end of the molecular tower assembly 6 is connected to the integrated valve body 2 through the third air pipe 10. At least one oxygen exhaust pipe 9 and an air inlet pipe 8 are connected to the integrated valve body 2. The compressor assembly 1 and the molecular tower assembly 6 are installed separately. They can be installed close to each other or far apart, which is more flexible. At the same time, the molecular tower assembly 6 uses two molecular towers to produce oxygen. The two molecular towers can produce oxygen at the same time or alternately to improve oxygen production efficiency. By integrating the ECU component 5, the oxygen production mode can be flexibly adjusted to meet different oxygen supply needs.

[0028] Specifically, the ECU component 5 is located on one side of the integrated valve body 2, so that the ECU component 5 and the integrated valve body 2 can be connected without connecting parts, resulting in high integration and small size. The ECU component 5 includes an ECU housing 52, a cover plate 51 located on one side of the ECU housing 52, and a control unit located inside the ECU housing 52. The control unit is electrically connected to the drive motor 3. Multiple control valves inserted into the integrated valve body 2 are installed inside the ECU housing 52. The control valves can switch and control the flow of air in the integrated valve body 2 to adapt to different oxygen supply modes. The control valves can be conventional solenoid valves, including various control solenoid valves such as pressure reducing valves, switching valves, relief valves, etc.

[0029] Various sensors can also be installed within the ECU component 5, corresponding to the various air passages within the integrated valve body 2, without the need for external piping. For example, pressure sensors can be installed on the oxygen and exhaust air passages. It can also include an oxygen sensor 15 connected to the oxygen exhaust pipe 9. The oxygen sensor 15 is electrically connected to the control unit and can monitor the pressure, concentration, and flow rate of the discharged oxygen in real time, feeding back to the booster pump control system for real-time adjustment. The control unit can be connected to the vehicle's main control unit, enabling unified control of the oxygen generator through the vehicle's active unit.

[0030] In addition, the drive motor 24 can be a DC brushless motor, which can greatly extend the life of the oxygen concentrator's power source, and determine the motor speed and torque through sensorless control and pressure sensor cooperation.

[0031] Since physical oxygen production requires maintaining a specific temperature range, the gas produced by the booster pump assembly experiences increased pressure, decreased volume, and increased temperature. Furthermore, the continuous pressurization by the piston generates heat due to friction between the dynamic sealing components and the cavity, resulting in high outlet pressure. Therefore, a cooling function is needed. The integrated valve body 2 is connected to a fourth gas pipe 11, with both ends connected to the compression chamber 23 inside the integrated valve body 2. A heat dissipation assembly 12 is installed on the fourth gas pipe 11 to dissipate the high-temperature, high-pressure gas generated by the integrated valve body 2, reducing the heat generated by the oxygen production system on the vehicle's interior. The high-temperature, high-pressure gas enters the heat dissipation assembly 12 along the fourth gas pipe 11, is cooled, and then returns to the compression chamber 23 before entering the molecular tower assembly 6. The heat dissipation assembly 12 includes a radiator and a cooling fan mounted on one side of the radiator. The radiator can be a conventional radiator, such as a finned radiator, while the cooling fan increases airflow over the radiator surface, resulting in better heat dissipation.

[0032] In this embodiment, the booster pump assembly includes a pair of piston arms 21 located within the compression chamber 23. An eccentric block 22 is connected to the middle of the pair of piston arms 21, and the eccentric block 22 is connected to the main shaft of the drive motor 24. The first air pipe 13 and the second air pipe 14 are respectively connected to the compression chambers 23 at both ends of the pair of piston arms 21. Through the cooperation of the pair of piston arms 21, the drive motor 24, and the eccentric block 22, continuous output of compressed gas can be achieved. The compression chambers 23 at both ends supply gas to the two molecular towers, improving oxygen production efficiency. The two pistons at both ends of the pair of piston arms 21 are pressurized by the rotation of the motor and output to the same outlet. During alternating pressurization, the pair of piston arms 21 rotate together with the motor and oscillate, with one piston pressurizing and discharging air, and the other piston drawing in air under negative pressure, thus repeating the cycle. During air intake, the intake is unidirectional. The valve draws atmospheric pressure air from the outer cavity of the motor and piston arm. At this time, the stroke of one of the pistons reaches its maximum value. Due to the presence of the intake check valve, a sufficient amount of atmospheric pressure air can be stored, and the stored gas cannot return to the compression chamber 23. The stroke of the other piston, which is arranged opposite to it, reaches its minimum value, and the gas stored in the previous cycle is pressurized and discharged from the compression chamber 23 through the exhaust check valve. Due to the presence of the exhaust check valve, the discharged gas cannot return to the compression chamber 23. At this time, a negative pressure intake and pressurized exhaust are completed. The motor rotates 180°, and when the motor rotates another 180°, pressurized exhaust is performed. The exhaust pressure can be monitored by a pressure sensor to confirm the working and loading of the booster pump. At the same time, in order to protect the pressure of the entire system within the ideal working pressure range, an overflow valve is set at the outlet of the booster pump assembly. When the pressure is too high, the high-pressure gas is discharged to the outside of the system through the pipeline.

[0033] In this embodiment, a filter 7 is installed on the air intake pipe 8 to ensure the cleanliness of the intake air. Two air intake pipes 8 can be provided, and filters 7 can be installed on both air intake pipes 8.

[0034] In this embodiment, as Figure 5 As shown, an oxygen chamber 62 is provided inside the molecular tower assembly 6 between the molecular towers. The third gas pipe 10 is connected to the oxygen chamber 62. A spring 63 is installed at the end of the molecular tower away from the gas inlet, which abuts against the molecular sieve 61. A one-way valve 64 is provided between the end of the molecular tower near the spring 63 and the oxygen chamber 62.

[0035] The molecular sieve 61 is equipped with filter cotton 65 at at least one end, which can further filter the gas flowing through the molecular sieve 61.

[0036] Specifically, the molecular tower stores a molecular sieve 61 that, under a certain pressure, can perform pressure swing adsorption of nitrogen from the air and expel oxygen from the tower. After the oxygen is expelled, the remaining molecular sieve 61 combines with nitrogen until it becomes saturated, at which point it no longer produces pure oxygen. However, if the saturated molecular sieve 61 is flushed with oxygen, it will return to its original state. During system operation, the two molecular towers can be operated alternately via the control valve group in the ECU component 5. Each molecular tower is controlled by two control solenoid valves. When pressurized air enters one of the molecular towers, the molecular sieve adsorbs nitrogen and expels oxygen. Part of the expelled oxygen enters the pressure stabilizing bottle through a one-way valve, and part enters the other through a throttling orifice. In a molecular tower, if the molecular sieve 61 in the tower is saturated, oxygen passing through the tower will expel nitrogen from the molecular sieve 61 and restore the molecular sieve 61 to its original state. The expelled nitrogen will be discharged through a solenoid valve. If the molecular tower is not saturated, all or part of the oxygen will be discharged through the solenoid valve. By controlling the opening and closing of the distribution valve group, alternating oxygen production and alternating nitrogen discharge between the two molecular towers can be achieved. The control valve group can use normally closed solenoid valves. One solenoid valve of one molecular tower is connected to the high-pressure gas source, and the other solenoid valve is connected to the exhaust port. Due to the noise generated during exhaust, a silencer can be installed. A throttling valve is installed between the two molecular towers. After throttling, the pressure drops, which can ensure the effective discharge of nitrogen from the molecular sieve 61.

[0037] In this embodiment, as Figure 7-8 As shown, the shock-absorbing base 4 includes a base plate 41 and multiple shock-absorbing connecting pads 44 installed around the base plate 41. It is connected to the vehicle via fixing bolts passing through the shock-absorbing connecting pads 44. Upper shock-absorbing pads 43 and lower shock-absorbing pads 46 are respectively installed on the upper and lower sides of the center of the base plate 41. Multiple connecting bolts 42, which are vertically connected to the integrated valve body 2, pass through the upper shock-absorbing pads 43 and lower shock-absorbing pads 46. The upper and lower shock-absorbing pads 43 and 46 clamp the base plate 41, ensuring a secure shock-absorbing connection between the integrated valve body 2 and the base plate 41. The shock-absorbing connecting pads 44 are arranged in pairs, clamping the base plate 41 from both the top and bottom, thus providing overall shock absorption to the base plate 41. Furthermore, the center of the base plate 41 forms an upward or downward arched portion 45, the shape of which matches the shape of the upper and lower shock-absorbing pads 43 and 46, improving the overall strength of the base plate 41.

[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0039] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A vehicle-mounted oxygen generation system, characterized in that, The system includes a compressor assembly (1) and a molecular tower assembly (6). The bottom of the compressor assembly (1) is mounted inside the vehicle via a shock-absorbing base (4). The molecular tower assembly (6) includes two molecular towers arranged side by side and a molecular sieve (61) disposed within the molecular towers. The compressor assembly (1) includes an integrated valve body (2) and an ECU assembly (5) disposed on one side of the integrated valve body (2). The integrated valve body (2) has a compression chamber (23) inside, and a booster is installed in the compression chamber (23). The pump assembly has a drive motor (24) that matches the booster pump assembly installed on one side of the integrated valve body (2). The compression chamber (23) inside the integrated valve body (2) is connected to the inlet end of the two molecular towers of the molecular tower assembly (6) through the first air pipe (13) and the second air pipe (14), respectively. The outlet end of the molecular tower assembly (6) is connected to the integrated valve body (2) through the third air pipe (10). At least one oxygen exhaust pipe (9) and an air inlet pipe (8) are connected to the integrated valve body (2).

2. The vehicle-mounted oxygen generation system according to claim 1, characterized in that: The integrated valve body (2) is connected to a fourth air pipe (11) with both ends connected to the compression chamber (23) inside the integrated valve body (2), and a heat dissipation component (12) is installed on the fourth air pipe (11).

3. The vehicle-mounted oxygen generation system according to claim 2, characterized in that: The heat dissipation assembly (12) includes a heat sink and a cooling fan mounted on one side of the heat sink.

4. The vehicle-mounted oxygen generation system according to claim 1, characterized in that: The booster pump assembly includes a counter-rotating piston arm (21) located in the compression chamber (23). An eccentric block (22) is connected to the middle of the counter-rotating piston arm (21). The eccentric block (22) is connected to the main shaft of the drive motor (24). The first air pipe (13) and the second air pipe (14) are respectively connected to the compression chambers (23) at both ends of the counter-rotating piston arm (21).

5. The vehicle-mounted oxygen generation system according to claim 1, characterized in that: A filter (7) is installed on the air intake pipe (8).

6. The vehicle-mounted oxygen generation system according to claim 1, characterized in that: An oxygen chamber (62) is provided inside the molecular tower assembly (6) between the molecular towers. The third gas pipe (10) is connected to the oxygen chamber (62). A spring (63) is installed at the end of the molecular tower away from the gas inlet, which abuts against the molecular sieve (61). A one-way valve (64) is provided between the end of the molecular tower near the spring (63) and the oxygen chamber (62).

7. The vehicle-mounted oxygen generation system according to claim 6, characterized in that: The molecular sieve (61) is equipped with filter cotton (65) at at least one end.

8. The vehicle-mounted oxygen generation system according to claim 1, characterized in that: The ECU assembly (5) includes an ECU housing (52), a cover plate (51) located on one side of the ECU housing (52), and a control unit located inside the ECU housing (52). The control unit is electrically connected to the drive motor (24), and multiple control valves inserted into the integrated valve body (2) are installed inside the ECU housing (52).

9. The vehicle-mounted oxygen generation system according to claim 8, characterized in that: An oxygen sensor (15) connected to an oxygen exhaust pipe (9) is installed inside the ECU housing (52), and the oxygen sensor (15) is electrically connected to the control unit.

10. The vehicle-mounted oxygen generation system according to claim 1, characterized in that: The shock-absorbing base (4) includes a base plate (41) and multiple shock-absorbing connecting pads (44) installed around the base plate (41). It is connected to the vehicle by fixing bolts passing through the shock-absorbing connecting pads (44). An upper shock-absorbing pad (43) and a lower shock-absorbing pad (46) are respectively installed on the upper and lower sides of the middle part of the base plate (41). Multiple connecting bolts (42) connected to the integrated valve body (2) are vertically arranged on the upper shock-absorbing pad (43) and the lower shock-absorbing pad (46).

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