Air exchange guide structure of air exchange valve for oxygen generator

Abstract

The application relates to a gas-exchange guide structure of a gas-exchange valve of an oxygen generator, and relates to the technical field of valve bodies. The gas-exchange guide structure comprises a valve body, two valve cavities are formed in the valve body, valve rods are arranged in the two valve cavities, diaphragms are arranged at the two ends of the valve rods, the valve cavity comprises an upper cavity, an intermediate cavity and a lower cavity which are communicated with each other, the two diaphragms are arranged in the upper cavity and the lower cavity respectively, air outlet holes one and two are formed in the side surface of the valve body, two air inlet holes are symmetrically formed in the valve body, the lower cavity comprises a gas passing chamber and a gas pressure chamber, the gas passing chamber and the gas pressure chamber are separated by a gas-tight partition plate, the end of the valve rod penetrates through the partition plate and is connected with a gas blocking push plate, the diaphragm in the lower cavity is arranged in the gas passing chamber, a pressure regulating passage is formed in the valve body, and a micro gas pressure regulating pump is arranged at the end of the pressure regulating passage. The application improves the gas-exchange guide structure of the oxygen generator, so that the oxygen generator gas-exchange valve can adopt multiple modes for airflow guiding, and the practicability of the gas-exchange valve is improved.

Description

Technical Field

[0001] This application relates to the field of valve body technology, and in particular to a ventilation guide structure for an oxygen generator ventilation valve. Background Technology

[0002] The ventilation valve of an oxygen concentrator is a key component controlling the separation of oxygen and nitrogen. It achieves continuous oxygen supply by periodically switching the adsorption and desorption processes of the molecular sieve. In the structure of an oxygen concentrator, the ventilation valve is typically connected to the compressor, molecular sieve, heat dissipation copper pipe, and exhaust pipe. By adjusting the gas passage, it enables the molecular sieve to work alternately and controls the pressure, thus facilitating the ventilation of the oxygen concentrator.

[0003] However, most existing oxygen concentrator ventilation valves are active structures that control the airflow direction inside the valve body by moving the valve stem through a pressure regulating device. When the oxygen concentrator is running at low power, the pressure regulating device still has to operate at full power to ensure the correct airflow direction inside the valve body, resulting in energy waste. Therefore, there is a lack of a flow guiding structure on the market that can reduce energy consumption of the ventilation valve when the oxygen concentrator is running at low power. Utility Model Content

[0004] In order to overcome the defect of excessive energy consumption caused by the ventilation valve in the prior art when the oxygen generator is running at low power, this application provides a ventilation valve guide structure that is more energy-saving and can actively control the flow direction.

[0005] The ventilation guide structure for an oxygen generator ventilation valve provided in this application adopts the following technical solution:

[0006] A ventilation guide structure for an oxygen concentrator's ventilation valve includes a valve body with two symmetrically arranged valve chambers. A valve stem passes through each of the two valve chambers, and diaphragms for blocking airflow are fitted at both ends of the valve stems. Each valve chamber includes an upper chamber, a middle chamber, and a lower chamber that communicate with each other. The two diaphragms are slidably disposed within the upper and lower chambers, respectively. The valve body has an air outlet (or a second air outlet) communicating with the two upper chambers and the two lower chambers, respectively, on its side. The upper part has symmetrically arranged air inlets that communicate with the two intermediate cavities respectively. The lower cavity includes an air passage chamber that communicates with the second air outlet and an air pressure chamber containing compressed gas. The air passage chamber and the air pressure chamber are separated by an airtight partition. The end of the valve stem slides through the partition and is connected to an air-blocking push plate. The diaphragm located in the lower cavity is in the air passage chamber. The valve body has a pressure regulating passage that communicates with the first air outlet, and a miniature gas pressure regulating pump is installed at the end of the pressure regulating passage.

[0007] Optionally, both the first air outlet and the second air outlet are perpendicular to the axis of the valve stem, and the ports of the first air outlet and the second air outlet are located on two opposite sides of the valve body.

[0008] Optionally, two power connectors are symmetrically installed on the valve body. The two power connectors are respectively connected to a pressure regulating component embedded in the valve body. The output end of the pressure regulating component extends into the pressure chamber and is used to fill the pressure chamber with compressed gas to drive the valve stem to move.

[0009] Optionally, the two valve chambers are connected to the same side of the valve body, and a sealing cover for limiting the valve stem is installed on the port of each of the two valve chambers on the valve body. The sealing cover is airtightly connected to the port of the valve chamber.

[0010] Optionally, two plug rings are symmetrically fitted on the valve stem on the side where the two diaphragms are close to each other. The plug rings slide through the intermediate cavity, and the side of the plug rings away from the diaphragms has a conical structure.

[0011] Optionally, a resilient filter plug is provided on both of the air inlet ports on the valve body.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] 1. This application can automatically control the flow direction of gas through the guiding effect between airflows when the intake volume is small, which saves the energy consumption of the oxygen generator and has high practicality;

[0014] 2. This application is equipped with a removable sealing cover to seal the valve cavity, so that parts can be quickly replaced when they are damaged inside the valve, thus improving the convenience of maintenance operations of the air exchange valve.

[0015] 3. This application provides an elastic filter plug at the air inlet port of the valve body, which can effectively keep the internal channels of the valve body clean and prevent dust accumulation and valve body blockage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the ventilation guide structure of the ventilation valve for an oxygen generator according to this application.

[0017] Figure 2 yes Figure 1 Cross-sectional view at point AA.

[0018] Figure 3 This is a structural view of the airflow passage structure of the air outlet one and air outlet two of the air exchange guide structure of the air exchange valve for an oxygen generator according to this application.

[0019] Figure 4 yes Figure 1 Cross-sectional view at point BB.

[0020] Figure 5 yes Figure 2 A magnified view of point A in the middle.

[0021] Explanation of reference numerals in the attached drawings: 1. Valve body; 11. Valve chamber; 111. Upper chamber; 112. Intermediate chamber; 113. Lower chamber; 1131. Air passage chamber; 1132. Air pressure chamber; 1133. Baffle plate; 12. Air outlet one; 13. Air outlet two; 14. Air inlet; 15. Pressure regulating passage; 2. Valve stem; 21. Diaphragm; 22. Air-blocking push plate; 23. Plug ring; 3. Power connector; 31. Pressure regulating component; 4. Sealing cover. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0023] This application discloses an air exchange guiding structure for an air exchange valve used in an oxygen generator.

[0024] Reference Figure 1 and Figure 2 A gas flow guiding structure for a gas exchange valve in an oxygen generator is disclosed, comprising a valve body 1. Two valve chambers 11 for gas flow guidance are symmetrically arranged on the valve body 1, and a valve stem 2 is slidably inserted through each valve chamber 11 along its axis. Each valve chamber 11 specifically includes an upper chamber 111, a middle chamber 112, and a lower chamber 113 that are interconnected. The valve stem 2 slidably passes through the middle chamber 112, with its two ends respectively inserted into the upper chamber 111 and the lower chamber 113. Diaphragms 21 are fitted at both ends of the valve stem 2 along its length, and the diaphragms 21 are airtight with both the upper chamber 111 and the lower chamber 113.

[0025] Reference Figure 1 and Figure 3 The valve body 1 has an air outlet 12 and an air outlet 13 on its side. The air outlet 12 is connected to the upper chamber 111 of both valve chambers 11, and the air outlet 13 is connected to the lower chamber 113 of both valve chambers 11. The valve body 1 also has two air inlets 14 symmetrically arranged on it, and the air inlets 14 are connected to the intermediate chamber 112.

[0026] When the ventilation valve is working, the valve stem 2 moves up and down to open the upper chamber 111 or the lower chamber 113. At the same time, the diaphragm 21 on the valve stem 2 facing away from the direction of movement will block the passage between the upper chamber 111 or the lower chamber 113 and the first or second air outlet 12, ensuring that the gas in the intermediate chamber 112 can only flow out from one of the air outlets.

[0027] Reference Figure 4 and Figure 5The lower chamber 113 specifically includes an air passage chamber 1131 and a pressure chamber 1132 separated by an airtight partition 1133. The air passage chamber 1131 is connected to the second air outlet 13, and the pressure chamber 1132 stores compressed gas. The end of the valve stem 2 slides through the partition 1133 and extends into the air passage chamber 1131, and an air-blocking push plate 22 is integrally connected to the end that passes through the partition 1133. The valve body 1 is also provided with a pressure regulating passage 15 that is connected to the first air outlet 12, and a miniature gas pressure regulating pump is fixedly installed at the end of the pressure regulating passage 15.

[0028] When a small flow of gas is introduced into the intermediate chamber 112, the valve stem 2 can be driven and moved up and down by controlling the pressure difference between the intermediate chamber 112 and the lower chamber 113, thereby achieving the effect of automatically guiding the gas.

[0029] Specifically, when gas needs to be directed to the vent 12, the air pressure in the intermediate chamber 112 can be made lower than the air pressure in the pressure chamber 1132. At this time, the valve stem 2 will move upward due to the pressure difference. Furthermore, if the air introduced into the other valve chamber 11 is also discharged from the vent 12 at this time, the downward pressure on the top of the diaphragm 21 in the upper chamber 111 will be reduced, thereby improving the gas discharge effect.

[0030] When it is necessary to export gas from outlet 13, simply drive the micro gas pressure regulating pump to fill outlet 12 with gas to increase the pressure.

[0031] Reference Figure 3 and Figure 5 Furthermore, the axes of vent hole 12 and vent hole 13 are both located on the same plane and are perpendicular to the axis of valve stem 2. This structure effectively reduces the overall volume of the air exchange valve, allowing it to occupy less space. At the same time, the ports of vent hole 12 and vent hole 13 are located on two opposite sides of the valve body 1, making it easier to connect other external components to the valve body 1.

[0032] Reference Figure 1 and Figure 5 Preferably, two power connectors 3 are symmetrically installed on the valve body 1. The two power connectors 3 are connected to an external power source to power the electronic components on the air exchange valve. The two power connectors 3 are respectively connected to a pressure regulating component 31 embedded inside the valve body 1. The output end of the pressure regulating component 31 extends into the pressure chamber 1132 to change the pressure of the compressed gas in the pressure chamber 1132, thereby indirectly achieving the purpose of actively moving the valve stem 2.

[0033] It is worth mentioning that, in order to ensure the smooth implementation of this application, when the pressure regulating component 31 is not in working condition, the pressure chamber 1132 is in a closed state, that is, the pressure of the compressed gas in the compression chamber does not change.

[0034] This structure expands the overall applicability of the ventilation valve, enabling it to guide gas flow in both active and automatic modes to meet the varying ventilation needs inside the oxygen generator.

[0035] Reference Figure 4 Furthermore, the two valve chambers 11 are connected to the same side of the valve body 1 surface, and sealing caps 4 are detachably installed on the valve body 1 at the ports of the two valve chambers 11 to limit the valve stem 2 and prevent it from coming out. The sealing caps 4 are airtightly connected to the ports of the valve chambers 11 to ensure the stability of the air pressure inside the vent 12. This structure facilitates the disassembly of the internal structure of the valve body 1, greatly reduces the difficulty of maintenance when internal parts of the valve body 1 are damaged, and extends the overall service life of the air exchange valve.

[0036] Reference Figure 5 Two plug rings 23 are symmetrically fitted on the valve stem 2 on the side where the two diaphragms 21 are close to each other. The plug rings 23 slide through the intermediate cavity 112, and the side away from the diaphragm 21 has a conical structure. When the diaphragm 21 closes the upper cavity 111 or the lower cavity 113, the plug rings 23 enter the intermediate cavity 112 and form an airtight blockage effect, preventing gas from escaping from the gaps. The plug rings 23 also play a positioning role, helping the diaphragm 21 slide along the axis and smoothly seal the vent and the upper and lower cavities 113.

[0037] Preferably, elastic filter plugs are provided at the positions of the two air inlet ports 14 on the valve body 1. The elastic filter plugs do not obstruct the passage of gas, but can effectively block and adsorb micro-dust particles in the gas, ensuring that the inside of the valve body 1 is always clean and tidy. The elastic filter plugs are not shown in the accompanying drawings of this application, but those skilled in the art can easily manufacture them without any creative effort based on the structural and functional description of the elastic filter plugs.

[0038] The implementation principle of the ventilation guide structure of the ventilation valve for an oxygen concentrator in this application embodiment is as follows:

[0039] This application creates a pressure difference between the intermediate chamber 112 and the pressure chamber 1132 by setting compressed gas in the pressure chamber 1132 located in the lower chamber 113 and controlling the air pressure in the intermediate chamber 112 during air intake. This pressure difference is then used to drive the valve stem 2 to move up and down. In this way, when the oxygen generator operates at a low power, it can automatically adjust the gas flow direction inside the valve body 1 with minimal energy consumption.

[0040] When the oxygen generator is operating at high power, the gas exchange valve of this application can actively control the movement of the valve stem 2 through the pressure regulating component 31 to provide the maximum gas regulation effect.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A ventilation guide structure for an oxygen generator's ventilation valve, characterized in that: The valve body (1) includes two symmetrically arranged valve chambers (11), each containing a valve stem (2). Each valve stem (2) has a diaphragm (21) fitted at both ends to block airflow. Each valve chamber (11) includes an upper chamber (111), a middle chamber (112), and a lower chamber (113) that are interconnected. The two diaphragms (21) are slidably disposed within the upper chamber (111) and the lower chamber (113), respectively. The valve body (1) has two air outlets (12) connected to the two upper chambers (111) and two air outlets (13) connected to the two lower chambers (113) on its side. The valve body (1) also has two symmetrically arranged air outlets connected to the two lower chambers (113). The intermediate cavity (112) is connected to the air inlet (14). The lower cavity (113) includes an air passage chamber (1131) connected to the second air outlet (13) and a pressure chamber (1132) containing compressed gas. The air passage chamber (1131) and the pressure chamber (1132) are separated by an airtight partition (1133). The end of the valve stem (2) slides through the partition (1133) and is connected to a gas-blocking push plate (22). The diaphragm (21) located in the lower cavity (113) is in the air passage chamber (1131). The valve body (1) is provided with a pressure regulating passage (15) connected to the first air outlet (12), and a micro gas pressure regulating pump is installed at the end of the pressure regulating passage (15).

2. The ventilation guide structure of the ventilation valve for an oxygen generator according to claim 1, characterized in that: Both the first air outlet (12) and the second air outlet (13) are perpendicular to the axis of the valve stem (2), and the ports of the first air outlet (12) and the second air outlet (13) are located on two opposite sides of the valve body (1).

3. The ventilation guide structure for an oxygen generator ventilation valve according to claim 1, characterized in that: Two power connectors (3) are symmetrically installed on the valve body (1). The two power connectors (3) are respectively connected to pressure regulating components (31) embedded in the valve body (1). The output end of the pressure regulating component (31) extends into the pressure chamber (1132) to fill the pressure chamber (1132) with compressed gas, thereby driving the valve stem (2) to move.

4. The ventilation guide structure of the ventilation valve for an oxygen generator according to claim 1, characterized in that: The two valve chambers (11) are connected to the same side of the valve body (1), and the valve body (1) is equipped with a sealing cover (4) for limiting the valve stem (2) at the port of each of the two valve chambers (11). The sealing cover (4) is airtightly connected to the port of the valve chamber (11).

5. The ventilation guide structure for an oxygen generator ventilation valve according to claim 1, characterized in that: Two plug rings (23) are symmetrically fitted on the valve stem (2) on the side where the two diaphragms (21) are close to each other. The plug rings (23) slide through the intermediate cavity (112), and the side of the plug rings (23) away from the diaphragms (21) has a conical structure.

6. The ventilation guide structure for an oxygen generator ventilation valve according to claim 1, characterized in that: The valve body (1) is provided with elastic filter plugs at the two air inlet ports (14).

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