A drainage assembly of an oxygen generator

Abstract

The utility model discloses a drainage assembly of oxygen generator, aims at solving the problem of water content accumulation in compressed air reduces oxygen production efficiency and health safety. The component includes cyclone dehumidification mechanism, condensation dehumidification mechanism and adsorption dehumidification mechanism. Cyclone dehumidification mechanism separates large particle water drop through conical cylinder, and condensation dehumidification mechanism adopts vertical serpentine condenser pipe, and is matched with thermoelectric refrigerator and fin condenses water content, and condensate water is automatically discharged through first drain pipe and water collecting pipe, and adsorption dehumidification mechanism absorbs residual moisture with porous silicon dioxide. Each mechanism is smoothly connected through conical pipe and connecting pipe, realizes multistage dehumidification. The component can effectively reduce air moisture content, prevent condensate water retention, reduce microbial breeding, guarantee output air quality, and simultaneously give consideration to low energy consumption and operation stability, is applicable to medical oxygen generator, and has higher practical value.

Description

Technical Field

[0001] This utility model relates to a drainage component for an oxygen generator, belonging to the field of medical oxygen generation equipment. Background Technology

[0002] Medical oxygen concentrators produce high-purity oxygen through processes such as air compression, condensation, and molecular sieve adsorption. However, air typically contains a small amount of moisture, which precipitates as liquid water during compression and condensation, accumulating inside the concentrator's pipes. This accumulated moisture not only reduces oxygen production efficiency and shortens the lifespan of the compressor and molecular sieve, but also, due to the inability to drain the condensate in a timely manner, can affect the internal hygiene of the concentrator, fostering the growth of bacteria, mold, and other microorganisms, thereby impacting the quality of the output oxygen.

[0003] Chinese utility model patent (application number: CN202121216561, 7) discloses a drainage mechanism for a medical oxygen concentrator. This device uses heat exchange tubes to condense and dehumidify compressed air, collecting and discharging the condensate, effectively separating and removing moisture from the air. However, the heat exchange tubes are horizontally arranged. After condensate forms on the inner wall of the tubes, most of it flows out with the airflow from the outlet, while a small portion remains on the inner wall. Especially when the oxygen concentrator is not running for extended periods, this residual condensate remains inside the tubes, providing a favorable environment for the growth of microorganisms (such as bacteria and mold). When the equipment restarts, oxygen containing bacteria may be output, posing a health hazard. Furthermore, this device relies on a refrigerator for condensation and dehumidification, which, while effective, consumes a lot of energy, increasing operating costs.

[0004] Therefore, there is a need for improved drainage components for medical oxygen concentrators that can effectively reduce the moisture content in compressed air, thoroughly drain condensate, prevent microbial growth, reduce energy consumption, and improve equipment operating efficiency and hygiene safety. Utility Model Content

[0005] The purpose of this invention is to provide a drainage component for an oxygen generator that can effectively solve the above-mentioned problems.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] It includes a cyclone dehumidification mechanism, a condensation dehumidification mechanism, and an adsorption dehumidification mechanism; the condensation dehumidification mechanism includes a mounting box, a condenser tube is installed inside the mounting box, fins are installed near the condenser tube, and the fins are connected to the cooler;

[0008] The condenser tube is a vertical serpentine tube, and a first drain pipe is provided at the lower bend of the vertical serpentine tube, with a water collection pipe at the end of the first drain pipe.

[0009] Furthermore, both the first drain pipe and the water collection pipe are equipped with solenoid valves.

[0010] Furthermore: the adsorption dehumidification mechanism includes a mounting shell, which is filled with porous silica.

[0011] Furthermore: the cyclone dehumidification mechanism includes a conical cylinder, the upper end of which is provided with an air outlet pipe, the lower end with a second drain pipe, and the side with an air inlet pipe, and the air outlet pipe extends into the conical cylinder.

[0012] Furthermore: the refrigerator is a thermoelectric refrigerator, and the fins are connected to the TEC cold end of the refrigerator.

[0013] Furthermore: the fins are arranged in groups of four in the area between the vertical pipes in the vertical serpentine tube.

[0014] Furthermore, the second drain pipe is connected to the condenser pipe via a tapered pipe.

[0015] Furthermore, the condenser tube is connected to the mounting housing via a connecting pipe.

[0016] The beneficial effects are:

[0017] 1. High-efficiency dehumidification: Through the coordinated work of cyclone dehumidification mechanism, condensation dehumidification mechanism and adsorption dehumidification mechanism, the moisture in the compressed air is removed step by step, which effectively reduces the moisture content of the air before entering the molecular sieve, improves oxygen production efficiency and molecular sieve life.

[0018] 2. Automatic condensate drainage: The condensate dehumidification mechanism adopts a vertical serpentine tube design. Under the action of gravity, the condensate collects in the first drain pipe at the lower bend and is automatically discharged through the water collection pipe and solenoid valve, avoiding condensate retention and reducing the risk of microbial growth.

[0019] 3. High hygiene and safety: The combination of vertical serpentine pipe and automatic drainage design prevents condensate from accumulating in the pipe for a long time, reduces the growth of bacteria and mold, and ensures the hygienic quality of the output oxygen.

[0020] 4. Energy saving and environmental protection: After the cyclone dehumidification mechanism removes some of the moisture, the condensation dehumidification mechanism can reduce power consumption, save some electricity, optimize energy consumption, and reduce operating costs. Attached Figure Description

[0021] For ease of explanation, this utility model is described in detail below with reference to the specific embodiments and accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a drawing of the fin part of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the mounting box of this utility model;

[0025] Figure 4 This is a cross-sectional view of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Cyclone dehumidification mechanism; 11. Conical tube; 12. Air outlet pipe; 13. Second drain pipe; 14. Air inlet pipe; 2. Condensation dehumidification mechanism; 21. Mounting box; 22. Condenser pipe; 23. Fins; 24. Refrigerator; 25. First drain pipe; 26. Water collection pipe; 27. Solenoid valve; 3. Adsorption dehumidification mechanism; 31. Mounting shell; 32. Porous silica; 4. Conical tube; 5. Connecting pipe. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", 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 this utility model 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 a limitation of this utility model.

[0030] Furthermore, the terms “first,” “second,” “third,” etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0031] Furthermore, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] See Figure 1-4This invention relates to an embodiment of a drainage component for an oxygen generator, comprising a cyclone dehumidification mechanism 1, a condensation dehumidification mechanism 2, and an adsorption dehumidification mechanism 3, which are connected in sequence through pipes to form a multi-stage dehumidification system for removing moisture from compressed air and automatically discharging condensate.

[0033] Cyclone dehumidification mechanism:

[0034] The cyclone dehumidification mechanism 1 includes a conical cylinder 11. An air outlet pipe 12 is located at the upper end of the conical cylinder 11, a second drain pipe 13 is located at the lower end, and an air inlet pipe 14 is located on the side. The air inlet pipe 14 is tangentially connected to the conical cylinder 11. Compressed air enters the conical cylinder 11 through the air inlet pipe 14, forming a vortex. Moisture is thrown against the cylinder wall under centrifugal force and slides along the inner wall of the conical cylinder 11 to the second drain pipe 13 at the bottom for discharge. The air outlet pipe 12 extends into the conical cylinder 11 and is located in the central area of ​​the conical cylinder 11, used to output the air after preliminary dehumidification. The cyclone dehumidification mechanism 1 requires no additional energy consumption and can efficiently remove larger water droplets from compressed air.

[0035] Condensation dehumidification mechanism:

[0036] The condensing dehumidification mechanism 2 includes a mounting box 21, inside which a condenser tube 22 is installed. The condenser tube 22 adopts a vertical serpentine tube structure. Fins 23 are arranged near the condenser tube 22, with one side of the fins 23 penetrating the mounting box 21 and connecting to the cooler 24 (several through slots are provided on one side of the mounting box 21 for the fins 23 to pass through). The cooler 24 is a thermoelectric cooler (TEC). The fins 23 are connected to the cold end of the TEC of the cooler 24 to enhance the heat exchange efficiency of the condenser tube 22. The fins 23 are arranged in groups of four in the area between the vertical pipes in the vertical serpentine tube, optimizing the heat exchange area and airflow.

[0037] A first drain pipe 25 is installed at the lower bend of the vertical serpentine pipe, and a water collection pipe 26 is connected to the end of the first drain pipe 25. Both the first drain pipe 25 and the water collection pipe 26 are equipped with solenoid valves 27 to control the automatic discharge of condensate.

[0038] When compressed air passes through the condenser pipe 22, liquid water is condensed out. Part of the condensate slides down the inner wall of the vertical serpentine pipe to the bottom under the action of gravity, and is collected in the water collection pipe 26 through the first drain pipe 25, and is discharged by the solenoid valve 27 at regular intervals; another part of the condensate is output from the output end of the condenser pipe 22 with the flow of gas and enters the adsorption dehumidification mechanism 3.

[0039] During this process, if the equipment is turned off and the air stops flowing, the precipitated liquid water will still slide down the inner wall of the vertical serpentine tube to the bottom under the action of gravity, and be collected in the water collection pipe 26 through the first drain pipe 25, and discharged by the solenoid valve 27 at regular intervals; this setting avoids condensate water from being retained in the condenser pipe 22.

[0040] The vertical serpentine pipe design has significant advantages over the traditional horizontal pipe design. Condensate is less likely to be carried out by the airflow and can be quickly collected at the bottom for discharge, reducing the adhesion and accumulation of moisture in the pipe and lowering the risk of microbial growth.

[0041] Adsorption dehumidification mechanism:

[0042] The adsorption dehumidification mechanism 3 includes a mounting shell 31, which is filled with porous silica 32. The porous silica 32 has high adsorption performance and can further adsorb residual moisture in the air output by the condensation dehumidification mechanism 2, ensuring that the air entering the molecular sieve meets the required dryness.

[0043] The advantages of using porous silica (SiO2) as the adsorbent material in this equipment are mainly its high specific surface area (usually reaching hundreds to thousands of m² / g), strong chemical stability, and renewability. Since porous silica can be regenerated by heating or depressurization after adsorption saturation, its adsorption capacity can be restored. The cost of repeated use is low, making it suitable for equipment that operates for a long time, such as medical oxygen concentrators.

[0044] The condenser pipe 22 of the condensation dehumidification mechanism 2 is connected to the mounting shell 31 of the adsorption dehumidification mechanism 3 via a connecting pipe 5.

[0045] Users can prepare a replacement adsorption dehumidification unit. When replacing, the connecting pipe 5 between the adsorption dehumidification unit 3 and the condensation dehumidification unit 2 is disassembled, and then the new adsorption dehumidification unit is installed. If the adsorption is saturated, it can be heated or pressurized for reuse. This setup makes replacement convenient and the cost controllable.

[0046] The second drain pipe 13 of the cyclone dehumidification mechanism 1 is connected to the condenser pipe 22 of the condenser dehumidification mechanism 2 via a tapered pipe 4. The tapered pipe 4, with its gradually changing diameter design (wider at one end, connected to the cyclone dehumidification mechanism 1; narrower at the other end, connected to the condenser pipe 22), can smoothly guide compressed air from the cyclone dehumidification mechanism 1 to the condenser dehumidification mechanism 2, reducing turbulence and pressure loss at the pipe connection and maintaining stable airflow.

[0047] The air output from the outlet pipe 12 of the cyclone dehumidification mechanism 1 has a certain flow velocity and swirling characteristics. Directly entering the condenser pipe 22 may lead to energy dissipation due to a sudden change in pipe diameter. The tapered pipe 4 reduces airflow resistance and optimizes air transmission efficiency through gradual diameter reduction. At the same time, the diameter of the condenser pipe 22 should not be too large, as this would affect the precipitation of condensate in the air.

[0048] Working principle:

[0049] Compressed air first enters the cyclone dehumidification unit 1, where larger water droplets are separated by swirling action, and the water is discharged from the second drain pipe 13. The preliminarily dehumidified air enters the condensation dehumidification unit 2 through the conical tube 4, where liquid water is condensed in the condenser tube 22. The condensate is collected in the first drain pipe 25 and the water collection pipe 26, and is automatically discharged through the solenoid valve 27. The air after condensation dehumidification enters the adsorption dehumidification unit 3, where the porous silica 32 adsorbs the residual moisture, and finally, the dry air is output to enter the molecular sieve for oxygen separation.

[0050] Through the aforementioned multi-stage dehumidification design, this invention can significantly reduce the moisture content of compressed air, extending the service life of the molecular sieve and compressor. The vertical serpentine tube and automatic drainage system effectively prevent condensate retention, reduce microbial growth, and ensure the hygienic quality of the output oxygen. Cyclone dehumidification and adsorption dehumidification require no additional energy consumption, while condensation dehumidification uses a thermoelectric refrigeration unit, resulting in lower overall energy consumption and optimized operating costs.

[0051] This invention achieves efficient dehumidification and automatic condensate drainage through a combination of cyclone dehumidification, condensation dehumidification, and adsorption dehumidification. It solves the problems of condensate retention, microbial growth, and high energy consumption in existing technologies, and is suitable for various medical oxygen generators, showing promising application prospects.

[0052] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A drainage component for an oxygen concentrator, characterized in that: It includes a cyclone dehumidification mechanism (1), a condensation dehumidification mechanism (2), and an adsorption dehumidification mechanism (3); the condensation dehumidification mechanism (2) includes a mounting box (21), a condenser tube (22) is provided inside the mounting box (21), and fins (23) are provided near the condenser tube (22), and the fins (23) are connected to the cooler (24); wherein, the condenser tube (22) adopts a vertical serpentine tube, and a first drain pipe (25) is provided at the lower bend of the condenser tube (22), and a water collection pipe (26) is provided at the end of the first drain pipe (25).

2. The drainage assembly of the oxygen generator according to claim 1, characterized in that: Solenoid valves (27) are installed in both the first drain pipe (25) and the water collection pipe (26).

3. The drainage component of the oxygen generator according to claim 2, characterized in that: The adsorption dehumidification mechanism (3) includes a mounting shell (31) filled with porous silica (32).

4. The drainage component of the oxygen generator according to claim 3, characterized in that: The cyclone dehumidification mechanism (1) includes a conical cylinder (11), with an air outlet pipe (12) at the upper end, a second drain pipe (13) at the lower end, and an air inlet pipe (14) on the side, and the air outlet pipe (12) extends into the conical cylinder (11).

5. The drainage assembly of the oxygen generator according to claim 4, characterized in that: The refrigerator (24) is a thermoelectric refrigerator, and the fins (23) are connected to the TEC cold end of the refrigerator (24).

6. The drainage assembly of the oxygen generator according to claim 5, characterized in that: The fins (23) are arranged in groups of four in the area between the vertical pipes in the vertical serpentine tube.

7. The drainage assembly of the oxygen generator according to claim 6, characterized in that: The second drain pipe (13) is connected to the condenser pipe (22) via a tapered pipe (4).

8. The drainage assembly of the oxygen generator according to claim 7, characterized in that: The condenser tube (22) is connected to the mounting shell (31) via a connecting pipe (5).

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