Atomization oxygen generator

Abstract

The utility model discloses an atomization oxygenerator which comprises an oxygen generation system and an oxygen supply system connected with the output end of the oxygen generation system, the oxygen supply system comprises a buffer storage device connected with the output end of the oxygen generation system, and the downstream of the buffer storage device is sequentially connected with a control assembly and an air outlet; the control assembly comprises a pressure control valve and a flow control valve which are connected with the output end of the buffer storage device; and the oxygen generation system, the pressure control valve and the flow control valve are all electrically connected with a control system. The output end of the air outlet is connected with the atomization assembly or the nasal oxygen tube, and oxygen in the pipeline enters the atomization assembly or the nasal oxygen tube through the air outlet. According to the utility model, the pressure in the buffer storage device can be improved and maintained, so that a user can carry out atomization treatment by using oxygen.

Description

Technical Field

[0001] This utility model relates to an oxygen generator that generates oxygen via a nebulizer, belonging to the technical field of home oxygen generators. Background Technology

[0002] Currently, the nebulization function of home molecular sieve oxygen concentrators on the market primarily relies on using compressed air from the concentrator's compressor as the air source. This approach presents several problems. First, the compressed air contains a large amount of condensed water, which contains impurities and can affect the nebulization of medication and the therapeutic effect. Second, using compressed air for nebulization consumes compressed air, indirectly affecting the oxygen concentration during inhalation. Third, using compressed air for nebulization requires adding an extra nebulizer port to the oxygen concentrator, increasing both product cost and the likelihood of leaks.

[0003] Using oxygen for nebulization not only solves the problems associated with compressed air nebulization, but also, from a clinical perspective, offers better therapeutic effects for patients with lung diseases who require nebulization therapy. Currently, conventional home oxygen concentrators connect directly to a nebulizer cup at the oxygen outlet, which has the following drawbacks:

[0004] First, if the user adjusts the output oxygen flow rate too low during use, it will affect the atomization effect.

[0005] Secondly, the oxygen output flow of a conventional oxygen concentrator is usually reduced by a pressure reducing valve inside the machine. The pressure after pressure reduction is usually around 45 kPa, which is not enough to reach the pressure required for atomization airflow.

[0006] Third, due to the influence of the PSA pressure swing adsorption process, the pressure inside the oxygen buffer tank of the machine will fluctuate periodically, resulting in uneven atomization. When the pressure in the oxygen buffer tank is too low, it will also affect the atomization effect. Utility Model Content

[0007] The present invention aims to address the above-mentioned technical problems by providing a nebulizer with stable atomization pressure and oxygen conservation.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] An oxygen concentrator includes an oxygen generation system and an oxygen supply system connected to the output end of the oxygen generation system. The oxygen supply system includes a buffer storage device connected to the output end of the oxygen generation system. A control component and an air outlet are sequentially connected downstream of the buffer storage device. The control component includes a pressure control valve and a flow control valve connected to the output end of the buffer storage device. The oxygen generation system, the pressure control valve, and the flow control valve are all electrically connected to a control system. The output end of the air outlet is connected to an nebulizer or a nasal cannula, and oxygen in the pipeline enters the nebulizer or nasal cannula through the air outlet.

[0010] Therefore, the buffer storage device in the oxygen supply system can buffer and stabilize the oxygen output from the oxygen generation system, avoiding large fluctuations in oxygen pressure and flow rate. The pressure control valve and flow control valve are electrically connected to the control system, which can accurately adjust the oxygen pressure and flow rate according to user needs or preset programs. The output end of the outlet is connected to the nebulization component or nasal cannula, that is, the nebulization outlet and the oxygen outlet use the same outlet, so the oxygen will not be affected by pressure fluctuations or flow rate fluctuations, meeting the precise requirements of oxygen supply parameters in different oxygen inhalation scenarios. A pressure control valve is set at the rear end of the buffer storage device. This control valve is used to adjust the oxygen pressure output by the buffer storage device, ensuring that the oxygen is output at the maximum pressure of the buffer storage device, thereby uniformly achieving the pressure required for oxygen nebulization.

[0011] Based on the embodiments of this utility model, further optimizations can be made to this utility model. The optimized technical solutions are as follows:

[0012] In one specific embodiment, the control component further includes an air path switching valve disposed between the flow control valve and the air outlet.

[0013] In one specific embodiment, the gas path switching valve includes a first input terminal P connected to the flow control valve, a first output terminal A connected to the gas outlet, and a second output terminal B connected to a pressure sensor; the signal output terminal of the control system is electrically connected to the signal input terminal of the gas path switching valve and the pressure sensor, respectively.

[0014] Therefore, by setting up a gas path switching valve and a pressure sensor electrically connected to the control system, the oxygen generator can use a pulse mode for nebulization. After entering the oxygen nebulization mode, the control system 5 adjusts the level of the gas path switching valve 33: when the level of the gas path switching valve 33 is low, the first input terminal P of the gas path switching valve 33 is connected to the first output terminal A, and oxygen can continuously flow out from the first output terminal A; when the level of the gas path switching valve 33 is high, the first input terminal P is not connected to the first output terminal A, and the first output terminal A is connected to the second output terminal B. At this time, the pressure sensor is equivalent to being connected to the nebulization component or nasal oxygen tube. When a user breathes while wearing the nebulizer, the pressure sensor determines the breathing state based on the pressure change in the oxygen supply pipeline. When a rapid decrease in pressure is detected in the pipeline (i.e., when the user inhales), the control system 5 lowers the level of the air path switching valve 33 for a duration t. During this period, the first input terminal P is connected to the first output terminal A, and oxygen flows into the user's end for nebulization within time t. After time t ends, the level of the air path switching valve is raised again, and the first output terminal A is connected to the second output terminal B. The system waits for the pressure sensor to detect the inhalation state again before lowering the level of the air path switching valve again. This cycle is repeated to achieve pulsed oxygen supply nebulization.

[0015] In one specific embodiment, a first one-way valve is connected between the buffer storage device and the output end of the oxygen generation system to allow oxygen to flow unidirectionally into the buffer storage device.

[0016] In one specific embodiment, an oxygen concentration sensor is provided between the control component and the air outlet, and the signal input terminal of the oxygen concentration sensor is electrically connected to the signal output terminal of the control system.

[0017] In one specific embodiment, a second one-way valve is connected between the oxygen concentration sensor and the outlet to allow oxygen to flow out in one direction.

[0018] In one specific embodiment, the signal input terminal of the control system is electrically connected to a human-machine interface system.

[0019] In one specific embodiment, the oxygen generation system includes a compressor, a switching main valve, and a molecular sieve tower connected in sequence via pipelines, and the molecular sieve tower is connected to the buffer storage device via pipelines.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1) The nebulizer oxygen generator of this utility model can maximize and maintain the pressure in the buffer storage device by setting up a buffer storage device, a pressure control valve and a flow control valve. In addition, the outlet of this device is connected to the nebulization component or nasal oxygen tube, that is, the nebulization outlet and the oxygen outlet use the same outlet, the nebulization flow is stable, and the nebulized oxygen is not affected by pressure fluctuations or flow fluctuations, which meets the precise requirements of oxygen supply parameters in different oxygen inhalation scenarios. After entering the oxygen nebulization mode, the control system ensures that the oxygen is output at the highest pressure in the buffer storage device, which facilitates the achievement of oxygen nebulization pressure and saves operation time.

[0022] 2) The oxygen generator of this utility model can achieve pulse oxygen supply by setting an air path switching valve, which can reduce the pressure drop caused by oxygen loss in the buffer storage device, ensure that the buffer storage device has sufficient pressure, and improve the effectiveness of nebulization.

[0023] 3) The nebulizing oxygen generator of this utility model saves nebulizing liquid and oxygen. At the same time, it ensures that the oxygen buffer tank has sufficient and stable pressure through pressure control valves and one-way valves, so as to meet the pressure, flow and other requirements of oxygen nebulization and achieve effective nebulization. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structural principle of the nebulized oxygen generator of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the pneumatic switching valve of this utility model.

[0026] In the figure

[0027] 1-Oxygen generation system; 11-Compressor; 12-Switching main valve; 13-Molecular sieve tower; 2-Oxygen supply system; 21-Buffer storage device; 3-Control components; 31-Pressure control valve; 32-Flow control valve; 33-Gas path switching valve; 34-Pressure sensor; 4-Gas outlet; 5-Control system; 6-First check valve; 7-Oxygen concentration sensor; 8-Second check valve; 9-Human-machine interaction system. Detailed Implementation

[0028] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0029] like Figures 1-2As shown, the nebulized oxygen generator of this embodiment includes an oxygen generation system 1 and an oxygen supply system 2 connected to the output end of the oxygen generation system 1. The oxygen supply system 2 includes a buffer storage device 21 connected to the output end of the oxygen generation system 1. A first one-way valve 6 for allowing oxygen to flow unidirectionally into the buffer storage device 21 is connected between the buffer storage device 21 and the output end of the oxygen generation system 1. The oxygen generation system 1 includes a compressor 11, a switching main valve 12, and a molecular sieve tower 13 connected in sequence through pipelines. The molecular sieve tower 13 is connected to the buffer storage device 21 through pipelines.

[0030] Downstream of the buffer storage device 21 are a control component 3 and an air outlet 4. The output end of the air outlet 4 is connected to an atomizing component or a nasal cannula, and oxygen in the pipeline enters the atomizing component or nasal cannula through the air outlet 4. The control component 3 includes a pressure control valve 31 and a flow control valve 32 connected to the output end of the buffer storage device 21. The oxygen generation system 1, the pressure control valve 31, and the flow control valve 32 are all electrically connected to the control system 5. The signal input end of the control system 5 is electrically connected to the human-machine interface system 9. In this embodiment, the buffer storage device 21 is selected as an oxygen buffer tank. The control system 5 can control the pressure control valve 31 to adjust the oxygen pressure output by the buffer storage device 21. The outlet of the pressure control valve 31 is connected to the inlet of the flow control valve 32, and the control system 5 can control the flow control valve 32 to adjust the output oxygen flow rate.

[0031] Once the oxygen nebulization mode is activated, the control system 5 controls the pressure control valve 31 to adjust the output pressure to its maximum. Typical home oxygen concentrators use a manual pressure regulating valve, usually adjusted to around 45 kPa by the manufacturer before leaving the factory, which is insufficient for effective nebulization. Conversely, if the factory-adjusted pressure is too high, it can cause discomfort for the user during oxygen inhalation. Therefore, in this design, the pressure is regulated using the pressure control valve 31, which is electrically connected to the control system 5. When the user enters the oxygen nebulization mode, the control system 5 ensures that the oxygen is output at the maximum pressure of the buffer storage device, thus achieving the pressure required for oxygen nebulization.

[0032] In addition, after entering the oxygen nebulization mode, the control system 5 will also control the flow control valve 32 to the maximum rated output flow of the oxygen generator to prevent the user from affecting the oxygen nebulization effect by adjusting the oxygen inhalation flow too low before performing oxygen nebulization.

[0033] The first one-way valve 6 is installed upstream of the buffer storage device 21 to stabilize the pressure within the buffer storage device 21. When the user is exhaling after entering the oxygen nebulization mode, the gas path switching valve 33 blocks oxygen flow to the buffer storage device 21, effectively blocking its outlet. However, in this design, the oxygen output of the oxygen generation system 1 uses a pulse mode. Because the PSA pressure swing adsorption principle involves a resolution process, even if the buffer storage device 21 is blocked, some oxygen will flow back during resolution, causing a decrease in pressure within the buffer storage device 21. The addition of the first one-way valve 6 prevents this backflow, effectively stabilizing the pressure of the buffer storage device. The pulse mode and PSA pressure swing adsorption principle of the oxygen generation system are existing technologies in this field and will not be elaborated upon here.

[0034] The control component 3 further includes a gas path switching valve 33 disposed between the flow control valve 32 and the air outlet 4; the gas path switching valve 33 includes a first input terminal P connected to the flow control valve 32, a first output terminal A connected to the air outlet 4, and a second output terminal B connected to a pressure sensor 34; the signal output terminal of the control system 5 is electrically connected to the signal input terminal of the gas path switching valve 33 and the pressure sensor 34, respectively.

[0035] like Figure 2 As shown, the gas switching valve 33 is equipped with three ports: P, A, and B. Port P is connected to the outlet of the flow control valve 32, port B is connected to the pressure sensor 34, and port A is used to output oxygen.

[0036] By setting up a gas path switching valve and a pressure sensor electrically connected to the control system, the oxygen generator can use a pulse mode for nebulization. After entering the oxygen nebulization mode, the control system 5 adjusts the pipeline by controlling the level of the gas path switching valve 33: when the level of the gas path switching valve 33 is low, the first input terminal P of the gas path switching valve 33 is connected to the first output terminal A, and oxygen can continuously flow out from the first output terminal A; when the level of the gas path switching valve 33 is high, the first input terminal P is not connected to the first output terminal A, and the first output terminal A is connected to the second output terminal B. At this time, the pressure sensor is equivalent to being connected to the nebulization component or nasal oxygen tube. When a user breathes while wearing the nebulizer, the pressure sensor determines the breathing state based on the pressure change in the oxygen supply pipeline. When a rapid decrease in pressure is detected in the pipeline (i.e., when the user inhales), the control system 5 lowers the level of the air path switching valve 33 for a duration t. During this period, the first input terminal P is connected to the first output terminal A, and oxygen flows into the user's end for nebulization within time t. After time t ends, the level of the air path switching valve is raised again, and the first output terminal A is connected to the second output terminal B. The system waits for the pressure sensor to detect the inhalation state again before lowering the level of the air path switching valve again. This cycle is repeated to achieve pulsed oxygen supply nebulization.

[0037] When a user undergoes nebulizer therapy, nebulized medication is effective during inhalation but ineffective during exhalation. Using the aforementioned pulsed nebulization method can save on nebulized medication. In addition, if continuous oxygen nebulization is used, the pressure in the buffer storage device will decrease due to oxygen loss. However, using pulsed oxygen delivery can slow down the degree of pressure drop in the buffer storage device caused by oxygen loss. Only when the buffer storage device has sufficient pressure can the effectiveness of nebulization be guaranteed, thus saving on oxygen consumption.

[0038] An oxygen concentration sensor 7 is installed between the control component 3 and the air outlet 4. The signal input terminal of the oxygen concentration sensor 7 is electrically connected to the signal output terminal of the control system 5. A second one-way valve 8 is connected between the oxygen concentration sensor 7 and the air outlet 4, allowing oxygen to flow unidirectionally from upstream of the oxygen concentration sensor 7 to the air outlet 4. The outlet of the oxygen concentration sensor 7 is connected to the second one-way valve 8, and the other end of the second one-way valve 8 is connected to the air outlet 4. The air outlet 4 is connected to a nebulizer or a nasal cannula, allowing the user to use the nebulizer for nebulization or the nasal cannula for oxygen inhalation.

[0039] After entering oxygen nebulization mode, the control system adjusts the air intake sequence of the molecular sieve tower 13 of the oxygen concentrator, extending the air intake time. The purpose is to maximize the pressure within the buffer storage device. Although the pressure control valve 31 outputs at its maximum pressure after entering oxygen nebulization mode, if the pressure within the buffer storage device 21 is too low, the oxygen nebulization requirements cannot be met. Because home oxygen concentrators use the PSA (Pressure Swing Adsorption) principle, the pressure within the buffer storage device 21 periodically rises and falls with the adsorption and desorption processes within the molecular sieve tower 13. Extending the air intake time increases the maximum pressure of the molecular sieve tower 13 during adsorption, which is equivalent to increasing the maximum pressure of the buffer storage device 21. Simultaneously, due to the pressure equalization process inherent in the PSA principle of the molecular sieve tower 13, increasing the maximum pressure of the molecular sieve tower 13 is equivalent to increasing the minimum pressure of the buffer storage device 21. In this way, it can be ensured that the oxygen pressure output by the buffer storage device 21 at any given time meets the nebulization requirements.

[0040] Once nebulization is complete, the user replaces the nebulizer with a nasal cannula, presses the mode button, and the system enters oxygen inhalation mode. The airway switching valve 33 is lowered, blocking port B and connecting port P to port A. The pressure control valve 31 adjusts the output pressure of the buffer storage device 21 to approximately 45 kPa, meeting the user's comfortable oxygen inhalation pressure. The flow control valve 32 adjusts back to the oxygen flow rate before entering nebulization mode, and the control system simultaneously adjusts the air intake sequence back to the duration of oxygen inhalation mode. At this time, the system pressure decreases, the peak pressure within the buffer storage device 21 decreases, and the oxygen generator outputs oxygen at a constant low-pressure flow rate. While the oxygen pressure is insufficient for effective nebulization, the user can still inhale oxygen comfortably.

[0041] In summary, this embodiment provides a unique oxygen supply path and control method to maximize and maintain the pressure within the buffer storage device, enabling users to perform nebulized oxygen therapy. Using oxygen for nebulized therapy not only provides a high-quality, pure gas source, but also, clinically, oxygen nebulization is more beneficial for the treatment of lung diseases. For manufacturers, it provides new oxygen inhalation and nebulization modes, enhancing product competitiveness.

[0042] The above embodiments should be understood as being used only to illustrate the present invention more clearly, and not to limit the scope of the present invention. After reading the present invention, any modifications of the present invention by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

Claims

1. A nebulizing oxygen generator, comprising an oxygen generation system (1) and an oxygen supply system (2) connected to the output end of the oxygen generation system (1), characterized in that: The oxygen supply system (2) includes a buffer storage device (21) connected to the output end of the oxygen generating system (1). Downstream of the buffer storage device (21) are a control component (3) and an air outlet (4). The control component (3) includes a pressure control valve (31) and a flow control valve (32) connected to the output end of the buffer storage device (21). The oxygen generating system (1), the pressure control valve (31) and the flow control valve (32) are all electrically connected to the control system (5). The output end of the air outlet (4) is connected to an atomizing component or a nasal oxygen tube. Oxygen in the pipeline enters the atomizing component or the nasal oxygen tube through the air outlet (4).

2. The atomizing oxygen generator according to claim 1, characterized in that: The control component (3) also includes an air path switching valve (33) disposed between the flow control valve (32) and the air outlet (4).

3. The atomizing oxygen generator according to claim 2, characterized in that: The gas path switching valve (33) includes a first input terminal P connected to the flow control valve (32), a first output terminal A connected to the gas outlet (4), and a second output terminal B connected to the pressure sensor (34); the signal output terminal of the control system (5) is electrically connected to the signal input terminal of the gas path switching valve (33) and the pressure sensor (34), respectively.

4. The atomizing oxygen generator according to claim 1, characterized in that: A first one-way valve (6) is connected between the buffer storage device (21) and the output end of the oxygen generation system (1) to allow oxygen to flow unidirectionally into the buffer storage device (21).

5. The atomizing oxygen generator according to claim 1, characterized in that: An oxygen concentration sensor (7) is provided between the control component (3) and the air outlet (4), and the signal input terminal of the oxygen concentration sensor (7) is electrically connected to the signal output terminal of the control system (5).

6. The atomizing oxygen generator according to claim 5, characterized in that: A second one-way valve (8) is connected between the oxygen concentration sensor (7) and the outlet (4) to allow oxygen to flow out in one direction.

7. The nebulizing oxygen generator according to claim 1, characterized in that: The signal input terminal of the control system (5) is electrically connected to the human-machine interaction system (9).

8. The nebulizing oxygen generator according to claim 1, characterized in that: The oxygen generation system (1) includes a compressor (11), a switching main valve (12) and a molecular sieve tower (13) connected in sequence by pipelines. The molecular sieve tower (13) is connected to the buffer storage device (21) by pipelines.

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