Oxygen generator capable of adjusting oxygen concentration

Abstract

The utility model provides an oxygen generator capable of adjusting oxygen concentration, which comprises a first pipeline, a second pipeline and a gas storage tank, and the gas storage tank is respectively communicated with the first pipeline and the second pipeline; the first pipeline is provided with a first valve, the second pipeline is sequentially provided with an oxygen generation molecular sieve and a second valve in the gas source flowing direction, and a first oxygen sensor is arranged in the oxygen tank. The gas storage tank is respectively connected with the first pipeline and the second pipeline. Wherein the first pipeline is provided with a first valve, and the second pipeline is provided with an oxygen production molecular sieve and a second valve. The gas passing through the second pipeline and the first pipeline with the increased oxygen concentration is mixed, so that the gas with the proper oxygen concentration is obtained. The first oxygen sensor is used for measuring the oxygen concentration in the mixed gas, and the gas flow of the first valve and the second valve is controlled through the numerical value change so as to control the oxygen concentration value in the mixed gas.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to an oxygen generator with adjustable oxygen concentration. Background Art

[0002] Hyperbaric oxygen chamber is a special medical device for high-pressure oxygen therapy. It has a wide range of applications and is mainly used in the treatment of anaerobic infection, CO poisoning, gas embolism, decompression sickness, hypoxic-ischemic encephalopathy, brain trauma, cerebrovascular disease, etc. Existing hyperbaric oxygen chambers generally use a pump to pump air into an oxygen-generating molecular sieve, which will preferentially pass oxygen molecules, thereby increasing the oxygen content to achieve the purpose of oxygen supply. However, excessive oxygen concentration can easily cause oxygen poisoning. In the prior art, it is mainly controlled by controlling the flow rate at the oxygen supply end, which sometimes leads to too low pressure and difficulty breathing for the patient. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides an oxygen concentrator with adjustable oxygen concentration, so as to enable patients to easily inhale oxygen while avoiding oxygen poisoning caused by excessive oxygen concentration.

[0004] To this end, an embodiment provides an oxygen concentrator with adjustable oxygen concentration, including a first pipeline, a second pipeline and a gas storage tank, wherein the gas storage tank is connected to the first pipeline and the second pipeline respectively; the first pipeline is provided with a first valve, and the second pipeline is provided with an oxygen-generating molecular sieve and a second valve in sequence in the direction of gas source flow, and a first oxygen sensor is provided in the oxygen tank.

[0005] As a further optional solution of the oxygen generator with adjustable oxygen concentration, a second oxygen sensor is further provided on the second pipeline between the oxygen-generating molecular sieve and the second valve.

[0006] As a further optional solution of the oxygen concentrator with adjustable oxygen concentration, the first valve is a proportional valve.

[0007] As a further optional solution of the oxygen concentrator with adjustable oxygen concentration, the second valve is a proportional valve.

[0008] As a further optional solution of the oxygen concentrator with adjustable oxygen concentration, the first oxygen sensor can control the first valve and the second valve.

[0009] As a further optional solution of the oxygen concentrator with adjustable oxygen concentration, it also includes a third pipeline, one end of which is connected to the gas storage tank, and a third valve is also provided on the third pipeline.

[0010] As a further optional solution of the oxygen concentrator with adjustable oxygen concentration, a flow meter is further provided on the third pipeline between the third valve and the gas storage tank.

[0011] As a further optional solution of the oxygen concentrator with adjustable oxygen concentration, the other end of the third pipeline is connected to a breathing mask, and a safety valve is further provided between the third valve and the breathing mask.

[0012] As a further optional solution of the oxygen concentrator with adjustable oxygen concentration, a pressure sensor is further provided between the third valve and the breathing mask.

[0013] As a further optional solution of the oxygen concentrator with adjustable oxygen concentration, the third valve is a linear valve and is controlled by the pressure sensor.

[0014] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0015] According to the oxygen concentrator with adjustable oxygen concentration in the above embodiment, the gas storage tank is connected to the first pipeline and the second pipeline respectively. Among them, there is a first valve on the first pipeline, and there are an oxygen-generating molecular sieve and a second valve on the second pipeline. By mixing the gas of the second pipeline with the gas having increased oxygen concentration with the gas of the first pipeline, a gas with a suitable oxygen concentration is obtained. The first oxygen sensor is used to measure the oxygen concentration in the mixed gas, and the gas flow of the first valve and the second valve is controlled by the change of this value to achieve the oxygen concentration value in the mixed gas. Gas is always pumped into the gas storage tank, so the gas pressure in the gas storage tank is generally greater than the pressure in the air, which can provide patients with a high-pressure oxygen inhalation environment without the risk of oxygen poisoning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] in:

[0018] Figure 1 The schematic diagram shows the principle of an oxygen concentrator with adjustable oxygen concentration provided according to an embodiment of the utility model.

[0019] Description of main component symbols:

[0020] The first pipeline-10; the second pipeline-20; the gas storage tank-30; the first valve-110; the oxygen-generating molecular sieve-210; the second valve-220; the first oxygen sensor-310; the second oxygen sensor-230; the third pipeline-40; the third valve-410; the flow meter-420; the breathing mask-50; the safety valve-430; the pressure sensor-440. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] In an embodiment of the utility model, an oxygen concentrator with adjustable oxygen concentration is provided, which comprises a first pipeline 10, a second pipeline 20 and a gas storage tank 30, wherein the gas storage tank 30 is connected to the first pipeline 10 and the second pipeline 20 respectively; the first pipeline 10 is provided with a first valve 110, and the second pipeline 20 is provided with an oxygen-generating molecular sieve 210 and a second valve 220 in sequence in the direction of gas source flow, and a first oxygen sensor 310 is provided in the oxygen tank.

[0025] According to the oxygen concentrator with adjustable oxygen concentration in the above embodiment, the gas storage tank 30 is connected to the first pipeline 10 and the second pipeline 20 respectively. Among them, there is a first valve 110 on the first pipeline 10, and there is an oxygen-generating molecular sieve 210 and a second valve 220 on the second pipeline 20. By mixing the gas of the second pipeline 20 with increased oxygen concentration and the gas of the first pipeline 10, a gas with a suitable oxygen concentration is obtained. The first oxygen sensor 310 is used to measure the oxygen concentration in the mixed gas, and the gas flow of the first valve 110 and the second valve 220 is controlled by this numerical change to achieve the oxygen concentration value in the mixed gas. Gas is always pumped into the gas storage tank 30, so the gas pressure in the gas storage tank 30 is generally greater than the pressure in the air, which can provide patients with a high-pressure oxygen inhalation environment without the risk of oxygen poisoning.

[0026] The oxygen concentration of the oxygen concentrator needs to be adjusted according to the patient's condition and needs. For patients with mild hypoxia, low-flow oxygen may be required, and the oxygen concentration is usually between 21% and 29%. For patients with chronic obstructive pulmonary disease (COPD) or other long-term hypoxia diseases, the oxygen concentration is generally maintained at 29%-37%. For patients with more severe acute hypoxia, such as acute left heart failure or severe shock, a higher flow of oxygen may be required, and the oxygen concentration can reach 37%-45%.

[0027] It should be noted that high-flow oxygen should be used with caution and is usually only used for patients with severe hypoxia and blood oxygen partial pressure below 30 mmHg without carbon dioxide retention. When using high-flow oxygen, the oxygen concentration should be controlled at 37%-45%, and the use time should not exceed 15-30 minutes. If necessary, it should be repeated every 15-30 minutes.

[0028] In addition, home oxygen concentrators are typically used for long-term home oxygen therapy, and their oxygen concentration is generally set between 2L and 5L. However, for patients with type II respiratory failure, low-concentration oxygen inhalation may be required, with an oxygen concentration between 25% and 29%.

[0029] It should be noted that the oxygen concentration of the oxygen concentrator is not fixed, but is adjusted according to the working principle of the machine and the specific needs of the patient. Therefore, when using an oxygen concentrator, you should follow the doctor's instructions and suggestions to ensure the correct setting of oxygen concentration and flow.

[0030] In some specific embodiments, a second oxygen sensor 230 is further provided between the oxygen-generating molecular sieve 210 and the second valve 220 on the second pipeline 20 .

[0031] In this embodiment, the second oxygen sensor 230 can measure the oxygen content of the gas flowing through the oxygen-generating molecular sieve 210. The user can reasonably adjust the opening and closing degree of the first valve 110 and the second valve 220 according to the data obtained by the second oxygen sensor 230 and the first oxygen sensor 310.

[0032] In some specific embodiments, the first valve 110 is a proportional valve.

[0033] In some specific embodiments, the second valve 220 is a proportional valve.

[0034] The first valve 110 and the second valve 220 are proportional valves, specifically proportional solenoid valves. In a proportional solenoid valve, the magnitude of the current is linearly related to the flow rate of the valve switch. Therefore, the degree of opening and closing of the first valve 110 and the second valve 220 can be accurately controlled.

[0035] At the same time, an oxygen concentration can be preset, and the purpose of accurately proportioning the oxygen concentration can be achieved by intelligent control of the control end by calculating the comprehensive data of the first valve 110, the second valve 220 and the first oxygen sensor 310.

[0036] In some specific embodiments, the first oxygen sensor 310 can control the first valve 110 and the second valve 220 .

[0037] The first oxygen sensor 310 can dynamically adjust the opening and closing degrees of the first valve 110 and the second valve 220 according to the measured real-time oxygen concentration of the gas.

[0038] In some specific embodiments, a third pipeline 40 is further included, one end of the third pipeline 40 is connected to the gas storage tank 30 , and a third valve 410 is also disposed on the third pipeline 40 .

[0039] In this embodiment, the third pipeline 40 is connected to the gas storage tank 30, and the third valve 410 provides oxygen supply to the patient by controlling the switch.

[0040] In some specific embodiments, a flow meter 420 is further provided on the third pipeline 40 between the third valve 410 and the gas storage tank 30 .

[0041] The flow meter 420 is divided into a differential pressure flow meter 420, a rotor flow meter 420, a throttling flow meter 420, a slit flow meter 420, a volume flow meter 420, an electromagnetic flow meter 420, an ultrasonic flow meter 420, etc. The flow meter 420 can accurately understand the oxygen content consumed by the patient.

[0042] In some specific embodiments, the other end of the third pipeline 40 is connected to the breathing mask 50 , and a safety valve 430 is further provided between the third valve 410 and the breathing mask 50 .

[0043] The safety valve 430 mainly plays a safety role. In some cases, the patient's vital signs are weak and breathing is difficult. At this time, since the oxygen-containing gas pressure at the supply end is relatively high and is continuously supplied to the patient, it is difficult for the patient to exhale, and it is very likely to cause suffocation for a long time. The existence of the safety valve 430 can ensure that when the pressure in the third pipeline 40 is too high, it will automatically open and connect to the air, making it convenient for the patient to exhale.

[0044] In some specific embodiments, a pressure sensor 440 is further provided between the third valve 410 and the breathing mask 50 .

[0045] The safety valve 430 can automatically start when it senses that the pressure in the third pipeline 40 reaches a certain pressure and exceeds a certain set time, so that the third pipeline 40 is connected to the outside air to avoid continuous oxygen supply to the patient. The pressure sensor 440 can monitor the pressure in the third pipeline 40 in real time, and the pressure sensor 440 can control the safety valve 430. When the set pressure is reached, the safety valve 430 is directly controlled to open.

[0046] In some specific embodiments, the third valve 410 is a linear valve and is controlled by a pressure sensor 440 .

[0047] In this embodiment, the third valve 410 is a linear valve, so the flow rate of the gas in the third pipeline 40 can be accurately controlled. The pressure sensor 440 senses the gas pressure behind the third valve 410 in the third pipeline 40, thereby accurately controlling the opening degree of the third valve 410. Finally, the gas pressure in the breathing mask 50 can be adjusted according to the actual conditions of different patients. Alternatively, the pressure in the breathing mask 50 can be dynamically adjusted to match the breathing rhythm of the patient.

[0048] Finally, it should be noted that there are generally two one-way valves in the mask, one of which ensures that the gas flowing from the oxygen concentrator to the human body is a one-way flow when the patient inhales, and the other ensures that the gas flows from the mouth to the air when the patient exhales.

[0049] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An oxygen concentrator with adjustable oxygen concentration, characterized in that: It includes a first pipeline, a second pipeline and a gas storage tank, wherein the gas storage tank is connected to the first pipeline and the second pipeline respectively; the first pipeline is provided with a first valve, the second pipeline is provided with an oxygen-generating molecular sieve and a second valve in sequence in the direction of gas source flow, and the gas storage tank is provided with a first oxygen sensor.

2. The oxygen concentrator with adjustable oxygen concentration as claimed in claim 1, characterized in that: On the second pipeline, a second oxygen sensor is also provided between the oxygen-generating molecular sieve and the second valve.

3. The oxygen concentrator with adjustable oxygen concentration as claimed in claim 1, characterized in that: The first valve is a proportional valve.

4. The oxygen concentrator with adjustable oxygen concentration as claimed in claim 3, characterized in that: The second valve is a proportional valve.

5. The oxygen concentrator with adjustable oxygen concentration as claimed in claim 4, characterized in that: The first oxygen sensor is capable of controlling the first valve and the second valve.

6. The oxygen concentrator with adjustable oxygen concentration as claimed in claim 1, characterized in that: It also includes a third pipeline, one end of which is connected to the gas storage tank, and a third valve is also arranged on the third pipeline.

7. The oxygen concentrator with adjustable oxygen concentration as claimed in claim 6, characterized in that: A flow meter is also provided on the third pipeline between the third valve and the gas storage tank.

8. The oxygen concentrator with adjustable oxygen concentration as claimed in claim 7, characterized in that: The other end of the third pipeline is connected to the breathing mask, and a safety valve is also provided between the third valve and the breathing mask.

9. The oxygen concentrator with adjustable oxygen concentration as claimed in claim 8, characterized in that: A pressure sensor is also provided between the third valve and the breathing mask.

10. The oxygen concentrator with adjustable oxygen concentration as claimed in claim 9, characterized in that: The third valve is a linear valve and is controlled by the pressure sensor.

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