Medical molecular sieve oxygen generator

Abstract

The invention relates to the technical field of oxygen preparation equipment, in particular to a medical molecular sieve oxygen generator which comprises a gas inlet pipeline, an impurity removal module, a four-way valve, a molecular sieve tower, a nitrogen discharge end, a spiral temperature conducting ring, an effect increasing assembly, a temperature control box, a semiconductor chilling plate, an adsorption mechanism, an adsorption box, an adsorption guide frame, an adsorption plate, a heating electrode, a ventilation worm wheel and an oxygen storage tower. At the cost of sacrificing the service life of the molecular sieve, the medical oxygen can be continuously provided for the patient within a period of time; when the spiral temperature conducting ring is electrified and activated, the control system immediately starts an alarm, so that medical staff can find that the oxygen production capacity of the molecular sieve is reduced and the molecular sieve needs to be replaced at the first time, and in the replacement process, a patient can obtain temporary oxygen supply by means of oxygen temporarily stored in the oxygen storage tower and can be replaced by the medical staff after the molecular sieve is replaced. And stable medical oxygen supply can be continuously obtained.

Description

Technical Field

[0001] The invention relates to the technical field of oxygen preparation equipment, in particular to a medical molecular sieve oxygen generator. Background Art

[0002] In the healthcare system, oxygen is the core element for maintaining vital signs, and the way it is obtained is directly related to the treatment effect of the disease and the quality of life of the patient. The common process routes of modern oxygen generators can be divided into three types: molecular sieve adsorption method, chemical oxygen production method and membrane separation method. Among them, the molecular sieve oxygen generator adopts pressure swing adsorption technology. Through the zeolite molecular sieve with nano-scale pores, it selectively adsorbs nitrogen molecules and can output medical oxygen with a concentration of more than 90%. With the triple advantages of stability, economy and safety, it has become the mainstream technical route of global oxygen production equipment and is widely used in hospitals, homes and other places with oxygen supply needs.

[0003] When the hospital uses molecular sieve oxygen generators to provide centralized oxygen to patients, the air enters the pressure swing adsorption separation stage after being pressurized and deeply dehumidified and decontaminated by built-in filters and air compressors. This process relies on the alternating operation of two towers: when compressed air enters one of the molecular sieve towers, the zeolite molecular sieve filled in the tower preferentially adsorbs nitrogen, carbon dioxide and other gases, while oxygen penetrates the molecular sieve bed and is collected; when the molecular sieve in the tower is saturated with adsorption, it automatically switches to another molecular sieve tower for continued adsorption, while the original molecular sieve tower discharges the adsorbed nitrogen by rapid pressure reduction to restore the activity of the molecular sieve. This cycle is precisely controlled by solenoid valves to achieve continuous oxygen supply. The high-concentration oxygen produced is transported to the terminal through a pipeline and then reduced to a usable pressure by a pressure reducing valve, so that it can supply oxygen to multiple patients at the same time.

[0004] During long-term operation, the molecular sieve will degrade due to the absorption of moisture or oil, causing the oxygen concentration to gradually decrease and even fail to meet medical standards. To address this problem, the existing technology usually adopts two methods: one is to replace the molecular sieve according to a fixed period, and the other is to configure multiple oxygen generators to form a backup unit through redundant design. However, both solutions have significant resource waste and efficiency defects. The fixed-period replacement strategy is essentially an extensive management based on time rather than the actual state of the molecular sieve. It ignores the dynamic effects of ambient temperature and humidity, air cleanliness, and equipment operating load on the life of the molecular sieve, resulting in material waste of the molecular sieve; although the redundant design can ensure the continuity of oxygen supply through the backup unit, the backup equipment is in a low load or standby state for a long time, resulting in low resource utilization. What is more serious is that the additional demand for space and energy of the redundant solution forces its operating costs to increase significantly, which may make it difficult for small and medium-sized medical institutions to bear.

[0005] In view of this, in order to overcome the above technical problems, the present invention proposes a medical molecular sieve oxygen generator. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, the technical solution adopted by the present invention to solve the technical problem is: a medical molecular sieve oxygen concentrator according to the present invention comprises: a housing, a compressor is fixedly installed under the housing, and an air intake grille is provided on the side wall of the housing where the compressor is installed; It is characterized by further comprising: an air intake pipeline, which is connected to a four-way valve after passing through the impurity removal module along the air outlet of the compressor; the other three ends of the four-way valve are respectively connected to the air intake ends of the two molecular sieve towers and the nitrogen discharge end; the side wall of the molecular sieve tower fixedly connected in the shell is surrounded by a spiral temperature conducting ring, and an efficiency enhancement component is also installed between the four-way valve and the impurity removal module, and the efficiency enhancement component includes: A temperature control box, the temperature control box is connected to the air inlet pipeline, and the top of the temperature control box is composed of a semiconductor refrigeration sheet to adjust the temperature of the high-pressure air entering the temperature control box; The adsorption mechanism is arranged close to the four-way valve and is connected to the air intake pipeline. The adsorption mechanism is used to adsorb and remove trace oil and water impurities in the air in the air intake pipeline.

[0007] Preferably, the adsorption mechanism comprises: An adsorption box, wherein the adsorption box is fixedly connected to the air intake pipe; Adsorption guide frames, multiple groups of the adsorption guide frames are evenly arranged in the adsorption box perpendicular to the airflow direction; The adsorption sheet is detachably connected in the adsorption guide frame, and the adsorption sheet is a multi-layer adsorption structure composed of a front activated carbon layer and a rear microporous silica gel layer.

[0008] Preferably, the inner part of the spiral temperature conducting ring extends into the molecular sieve tower, and the outer part extends out of the molecular sieve tower to be in direct contact with the air; the spiral temperature conducting ring is an electric heating ring, and the heating electrode at its end is connected to the power supply of the oxygen generator.

[0009] Preferably, the adsorption guide frame is rotatably connected to the side wall of the adsorption box, and the rotating shaft of the adsorption guide frame passes through the side wall end of the adsorption box and is fixedly connected to a ventilation worm gear, the ventilation worm gear is meshed with the ventilation worm screw passing through the top of the adsorption box, and the ventilation worm screw extends out of the upper end of the adsorption box and is fixedly connected to the micro motor drive shaft.

[0010] Preferably, the adsorption guide frame has a zigzag structure, and adjacent adsorption guide frames are connected end to end to form a contact seal.

[0011] Preferably, the other end of the semiconductor refrigeration plate not facing the temperature control box is fixedly connected to a heat sink, the upper end of the heat sink is fixedly connected to a convection fan, and the convection fan is embedded in the upper end of the shell to discharge air upward.

[0012] Preferably, a corrugated plate is evenly and fixedly connected to the middle section of one end of the semiconductor refrigeration plate facing the temperature control box, and the corrugated plate is made of a material with high thermal conductivity.

[0013] Preferably, the air inlet port and the air outlet port of the temperature control box are arranged with staggered opening heights.

[0014] Preferably, an oxygen storage tower is fixedly connected between the two molecular sieve towers, the oxygen storage tower is communicated with the oxygen outlet of the molecular sieve tower, a composite air pump is installed at the top outlet of the oxygen storage tower, and the oxygen in the oxygen storage tower is output to the outside along the oxygen outlet pipeline through the composite air pump.

[0015] Preferably, the oxygen outlet pipeline of the oxygen storage tower is also provided with a pipeline for one-way output to the molecular sieve tower, and the composite air pump has two airflow output modes: pulse output and voltage-stabilized output.

[0016] The beneficial effects of the present invention are as follows: 1. The spiral temperature-conducting ring surrounding the side wall of the molecular sieve tower extends into the tower to quickly conduct the heat generated by the molecular sieve adsorption process, and the outer spiral structure accelerates the heat exchange with the ambient air by expanding the surface area. The material with high thermal conductivity can reduce the temperature rise in the molecular sieve adsorption process and the temperature drop in the desorption process, which causes the temperature fluctuation in the molecular sieve tower. It maintains the temperature in the molecular sieve tower stable and keeps it at room temperature, ensuring that the molecular sieve can always produce oxygen at a suitable working temperature, thereby effectively improving the working efficiency of the molecular sieve.

[0017] 2. In an emergency, at the expense of the service life of the molecular sieve, it can continue to provide medical oxygen to patients for a period of time; when the spiral temperature conducting ring is powered on and activated, the control system also immediately activates the alarm so that medical staff can immediately discover the decline in the oxygen production capacity of the molecular sieve and the need to replace the molecular sieve. During the replacement process, the patient can obtain temporary oxygen supply with the help of the oxygen temporarily stored in the oxygen storage tower. After the molecular sieve is replaced, the patient can continue to obtain a stable supply of medical oxygen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 is a three-dimensional structural cross-sectional view of the molecular sieve tower of the present invention; Figure 4 is a three-dimensional structural cross-sectional view of the adsorption assembly of the present invention; Figure 5 yes Figure 4A magnified image of point A; Figure 6 It is a three-dimensional structural explosion diagram of the temperature control box and related structures of the present invention.

[0020] In the figure: 1. Shell; 2. Compressor; 3. Air intake grille; 4. Air intake pipeline; 5. Impurity removal module; 6. Four-way valve; 7. Molecular sieve tower; 8. Nitrogen discharge end; 9. Spiral temperature guide ring; 10. Efficiency enhancement component; 11. Temperature control box; 12. Semiconductor refrigeration plate; 13. Adsorption mechanism; 14. Adsorption box; 15. Adsorption guide frame; 16. Adsorption plate; 17. Heating electrode; 18. Ventilation worm gear; 19. Ventilation worm; 20. Micro motor; 21. Heat sink; 22. Convection fan; 23. Corrugated plate; 24. Oxygen storage tower; 25. Compound air pump; 26. Oxygen outlet pipeline. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figures 1 to 6 As shown, an embodiment of the present invention provides a medical molecular sieve oxygen concentrator, comprising: a housing 1, a compressor 2 is fixedly installed below the housing 1, and an air intake grille 3 is provided on the side wall of the housing 1 at the installation position of the compressor 2; It also includes: an air intake pipeline 4, which is connected to a four-way valve 6 after passing through a decontamination module 5 along the outlet end of the compressor 2; the other three ends of the four-way valve 6 are respectively connected to the air intake ends of two molecular sieve towers 7 and a nitrogen discharge end 8; the side wall of the molecular sieve tower 7 fixedly connected to the shell 1 is surrounded by a spiral temperature conducting ring 9, and an efficiency enhancement component 10 is also installed between the four-way valve 6 and the decontamination module 5, and the efficiency enhancement component 10 includes: A temperature control box 11, the temperature control box 11 is connected to the air inlet pipeline 4, and the top of the temperature control box 11 is composed of a semiconductor cooling sheet 12 to adjust the temperature of the high-pressure air entering the temperature control box 11; The adsorption mechanism 13 , which is arranged close to the four-way valve 6 and is connected to the air intake pipeline 4 , is used to adsorb and remove trace oil and water impurities in the air in the air intake pipeline 4 .

[0023] As an embodiment of the present invention, the adsorption mechanism 13 includes: An adsorption box 14, wherein the adsorption box 14 is fixedly connected to the air intake pipe; Adsorption guide frame 15, multiple groups of adsorption guide frames 16 are evenly arranged in the adsorption box 14 perpendicular to the airflow direction; The adsorption sheet 16 is detachably connected to the adsorption guide frame 15 , and the adsorption sheet 16 is a multi-layer adsorption structure composed of a front activated carbon layer and a rear microporous silica gel layer.

[0024] As an embodiment of the present invention, the inner part of the spiral temperature conducting ring 9 extends into the interior of the molecular sieve tower 7, and the outer part extends out of the molecular sieve tower 7 and is in direct contact with the air; the spiral temperature conducting ring 9 is an electric heating ring, and the heating electrode 17 at its end is connected to the power supply of the oxygen generator.

[0025] As an embodiment of the present invention, an oxygen storage tower 24 is fixedly connected between the two molecular sieve towers 7, and the oxygen storage tower 24 is connected to the oxygen outlet of the molecular sieve tower 7. A composite air pump 25 is installed at the top outlet of the oxygen storage tower 24, and the oxygen in the oxygen storage tower 24 is output to the outside along the oxygen outlet pipeline 26 through the composite air pump 25.

[0026] As an embodiment of the present invention, the adsorption guide frame 15 is in a zigzag structure, and adjacent adsorption guide frames 15 are connected end to end to form a contact seal.

[0027] When preparing medical oxygen, first, start the compressor 2. After the compressor 2 draws in external air from the air intake grille 3 and generates high-pressure air, the airflow first passes through the air intake pipe 4 and the impurities in the air are filtered by the impurity removal module 5, and then enters the efficiency enhancement component 10 for further processing; the airflow first enters the temperature control box 11, and the high-pressure air is cooled by the semiconductor refrigeration plate 12 on the top of the temperature control box 11, thereby forming a thermodynamic environment that is conducive to the subsequent adsorption operation; the airflow after cooling immediately enters the adsorption mechanism 13 along the air intake pipe 4, and the adsorption box 14 of the adsorption mechanism 13 has a zigzag adsorption plate 14 arranged closely perpendicular to the airflow direction. The guide frame 15 forms a closed flow channel through the contact seal between adjacent frames, forcing all airflows to pass through the adsorption sheet 16 composed of an activated carbon layer and a microporous silica gel layer before entering the molecular sieve tower 7, adsorbing the trace oil and water vapor remaining in the air, and preventing the high-pressure airflow from escaping through the gap between adjacent adsorption guide frames 15, thereby removing particulate impurities in the high-pressure air that may cause the adsorption capacity of the molecular sieve as much as possible. Furthermore, the high-pressure airflow passing through the adsorption sheet 16 has eliminated the temperature rise generated when the compressor 2 is pressurized under the action of the semiconductor refrigeration sheet 12 when passing through the temperature control box 11, and even reduced it to below room temperature. At this time, the high-pressure and low-temperature airflow passes through the adsorption sheet 1 6, the adsorption sheet 16 adsorbs the trace impurities such as oil, gas and water vapor it carries more thoroughly and effectively; after flowing out from the air inlet pipe behind the adsorption box 14, it is switched to one of the molecular sieve towers 7 through the four-way valve 6 to perform oxygen-nitrogen separation. In this process, the molecular sieve releases heat during the nitrogen adsorption process in the tower, which will increase the temperature inside the molecular sieve tower 7. After a long adsorption time, the temperature inside the molecular sieve tower 7 will gradually no longer be conducive to the nitrogen adsorption work of the molecular sieve. For this reason, the spiral temperature conducting ring 9 surrounding the side wall of the molecular sieve tower 7 extending into the tower quickly conducts the heat generated by the molecular sieve adsorption process, and the outer spiral structure accelerates the heat exchange with the ambient air by expanding the surface area. , based on its high thermal conductivity, the material can just reduce the temperature fluctuation in the molecular sieve tower 7 caused by the temperature rise during the molecular sieve adsorption process and the temperature drop during the desorption process, maintain the temperature in the molecular sieve tower 7 stable, and keep it at room temperature, so as to ensure that the molecular sieve is always at a suitable working temperature for oxygen production, thereby effectively improving the working efficiency of the molecular sieve; finally, the oxygen produced by the molecular sieve tower 7 is temporarily stored in the oxygen storage tower 24, and the composite air pump 25 transports the composite medical standard oxygen gas flow to the outside along the oxygen outlet pipeline 26, so as to timely supply high-concentration oxygen to patients in the hospital who need oxygen supply, thereby ensuring that the oxygen supply demand of patients during the treatment of their illness is guaranteed; During the continuous oxygen production process, the molecular sieve in the molecular sieve tower 7 will have its oxygen production capacity continuously reduced due to the continuous accumulation of impurity water vapor and its own material aging. When the oxygen concentration produced by the molecular sieve detected at the gas inlet of the oxygen storage tower 24 fails to meet the medical standard within a certain period of time, it means that the oxygen production capacity of the molecular sieve in the molecular sieve tower 7 is insufficient and can no longer provide medical oxygen for the patient. At this time, the control system will energize and activate the spiral temperature conducting ring 9 on the molecular sieve tower 7 in the desorption state to perform emergency heating on the molecular sieve inside. Although high temperature will damage the service life of the molecular sieve, high temperature will At the same time, it can also enhance the desorption efficiency of the molecular sieve, thereby enhancing the oxygen production capacity of the molecular sieve in the short term. Therefore, in this emergency state, at the expense of the service life of the molecular sieve, it can continue to provide medical oxygen to the patient for a period of time; when the spiral temperature conducting ring 9 is powered on and activated, the control system also immediately activates the alarm so that medical staff can find the decline in the oxygen production capacity of the molecular sieve at the first time and need to replace the molecular sieve. During the replacement process, the patient can obtain temporary oxygen supply with the help of the oxygen temporarily stored in the oxygen storage tower 24. After the molecular sieve is replaced, a stable supply of medical oxygen can continue to be obtained.

[0028] As an embodiment of the present invention, the adsorption guide frame 15 is rotatably connected to the side wall of the adsorption box 14, and the rotating shaft of the adsorption guide frame 15 passes through the side wall end of the adsorption box 14 and is fixedly connected with a ventilation worm gear 18, the ventilation worm gear 18 is meshed with a ventilation worm screw 19 passing through the top end of the adsorption box 14, and the ventilation worm screw 19 extends out of the upper end of the adsorption box 14 and is fixedly connected to the driving shaft of the micro motor 20.

[0029] As an embodiment of the present invention, the other end of the semiconductor refrigeration plate 12 that is not facing the temperature control box 11 is fixedly connected to a heat sink 21, and the upper end of the heat sink 21 is fixedly connected to a convection fan 22. The convection fan 22 is embedded in the upper end of the shell 1 to discharge air upward.

[0030] As an embodiment of the present invention, a corrugated sheet 23 is evenly and fixedly connected to the middle section of one end of the semiconductor refrigeration sheet 12 facing the temperature control box 11, and the corrugated sheet 23 is made of a material with high thermal conductivity.

[0031] As an implementation mode of the present invention, the air inlet port and the air outlet port of the temperature control box 11 are arranged with staggered heights.

[0032] During operation, in order to ensure that the temperature of the high-pressure air in the temperature control box 11 can be effectively adjusted, the semiconductor refrigeration sheet 12 on the top of the temperature control box 11 increases the contact area with the airflow through the corrugated sheet 23. The corrugated sheet 23 made of high thermal conductivity material quickly transfers the cold to the core layer of the airflow. Combined with the staggered distribution of the air inlet and the air outlet, the airflow is forced to pass through the temperature control box 11 along an S-shaped path, extending the heat exchange time and evenly reducing the airflow temperature to below room temperature; the heat sink 21 on the back of the semiconductor refrigeration sheet 12 exhausts air upward through the convection fan 22, and uses the chimney effect to form a continuous airflow, thereby avoiding the performance degradation of the refrigeration sheet due to the large temperature difference between the cold and hot surfaces; When it is detected that the oxygen concentration drops, the emergency heating function of the spiral temperature conducting ring 9 on the molecular sieve tower 7 in the desorption process is started, and the power of the compressor 2 is increased to pressurize the air to the pressure limit of the molecular sieve. The voltage across the semiconductor refrigeration plate 12 in the temperature control box 11 is increased, further enhancing its ability to cool the air. The micro motor 20 above the adsorption box 14 is also started immediately, and the micro motor 20 drives the ventilation worm 19 to rotate, driving the ventilation worm gear 18 fixedly connected to the rotating shaft of the adsorption guide frame 15 to rotate synchronously, and the adsorption guide frame 15 is changed from a static state to a swinging state under the action of the micro motor 20, and the airflow on the adsorption plate 16 is continuously changed by high-frequency swinging. 16 The flow direction on the surface can prevent the microporous silica gel layer from forming penetrating pores due to excessive local airflow scouring. At the same time, the activated carbon layer also exposes more adsorption sites under dynamic turbulence, so as to effectively adsorb and retain oil and gas impurities in the air without reducing the flow rate of the high-pressure airflow as much as possible. After the pressurized high-pressure and low-temperature air enters the molecular sieve, the adsorption efficiency of the molecular sieve on nitrogen is accelerated, thereby further ensuring that the oxygen production capacity of the molecular sieve is sufficient to provide patients with medical oxygen with a concentration of more than 90% under emergency conditions, ensuring that patients can still obtain sufficient oxygen supply when the normal oxygen production capacity of the molecular sieve declines, and ensuring that there is no risk of interruption of oxygen therapy for critically ill patients.

[0033] As an embodiment of the present invention, the oxygen outlet pipeline 26 of the oxygen storage tower 24 is also provided with a pipeline for one-way output to the molecular sieve tower 7, and the composite air pump 25 has two airflow output modes: pulse output and voltage-stabilized output.

[0034] During operation, when the molecular sieve tower 7 is in the adsorption oxygen production state, the composite air pump 25 switches to the voltage-stabilized output mode, and transports the high-concentration oxygen in the oxygen storage tower 24 to the oxygen use terminal along the oxygen outlet pipeline 26 at a constant pressure, ensuring that the gas supply pressure of the treatment equipment does not fluctuate too much; and when the molecular sieve tower 7 enters the desorption and regeneration stage, especially in an emergency state, the composite air pump 25 switches to the pulse output mode, and through intermittent pressurization, part of the oxygen in the oxygen storage tower 24 is reversely injected into the molecular sieve tower 7 through a one-way pipeline, and the pulse airflow is used to flush the molecular sieve pores, accelerate the desorption of nitrogen and connect it to the residual water vapor and take it away from the nitrogen discharge end 8, thereby achieving the technical effect of further improving the regeneration efficiency of the molecular sieve.

[0035] The above shows and describes the basic principles, main features and significant advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above specific embodiments. Without departing from the spirit and scope of the present invention, the present invention may also be modified and improved to adapt to different usage environments and customer needs. These modifications and improvements fall within the scope of protection of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A medical molecular sieve oxygen concentrator, comprising: A shell (1), a compressor (2) being fixedly mounted below the shell (1), and an air intake grille (3) being provided on a side wall of the shell (1) at a mounting position of the compressor (2); The invention is characterized in that it further comprises: an air intake pipeline (4), the air intake pipeline (4) is connected to a four-way valve (6) after passing through an impurity removal module (5) along the air outlet of the compressor (2); the other three ends of the four-way valve (6) are respectively connected to the air intake ends of two molecular sieve towers (7) and a nitrogen discharge end (8); a spiral temperature conducting ring (9) is surrounded by the side wall of the molecular sieve tower (7) fixedly connected to the shell (1); an efficiency enhancement component (10) is also installed between the four-way valve (6) and the impurity removal module (5), and the efficiency enhancement component (10) comprises: A temperature control box (11), the temperature control box (11) being connected to the air inlet pipeline (4), the top of the temperature control box (11) being formed by a semiconductor cooling sheet (12) for adjusting the temperature of high-pressure air entering the temperature control box (11); An adsorption mechanism (13) is arranged close to the four-way valve (6) and is connected to the air intake pipeline (4). The adsorption mechanism (13) is used to adsorb and remove trace amounts of oil and water impurities in the air in the air intake pipeline (4).

2. A medical molecular sieve oxygen concentrator according to claim 1, characterized in that: The adsorption mechanism (13) comprises: An adsorption box (14), wherein the adsorption box (14) is fixedly connected to the air intake pipe; Adsorption guide frames (15), wherein a plurality of groups of the adsorption guide frames (15) are evenly arranged in the adsorption box (14) perpendicular to the airflow direction; An adsorption sheet (16) is detachably connected to the adsorption guide frame (15), and the adsorption sheet (16) is a multi-layer adsorption structure composed of a front activated carbon layer and a rear microporous silica gel layer.

3. A medical molecular sieve oxygen concentrator according to claim 1, characterized in that: The inner portion of the spiral temperature conducting ring (9) extends into the interior of the molecular sieve tower (7), and the outer portion extends out of the molecular sieve tower (7) to be in direct contact with the air; the spiral temperature conducting ring (9) is an electric heating ring, and the heating electrode (17) at its end is connected to the power supply of the oxygen generator.

4. A medical molecular sieve oxygen concentrator according to claim 2, characterized in that: The adsorption guide frame (15) has a zigzag structure, and adjacent adsorption guide frames (15) are connected end to end to form a contact seal.

5. A medical molecular sieve oxygen concentrator according to claim 4, characterized in that The adsorption guide frame (15) is rotatably connected to the side wall of the adsorption box (14), and the rotation axis of the adsorption guide frame (15) passes through the side wall end of the adsorption box (14) and is fixedly connected to a ventilation worm gear (18), the ventilation worm gear (18) is meshed with a ventilation worm (19) passing through the top of the adsorption box (14), and the ventilation worm (19) extends out of the upper end of the adsorption box (14) and is fixedly connected to the drive shaft of the micro motor (20).

6. A medical molecular sieve oxygen concentrator according to claim 1, characterized in that The other end of the semiconductor refrigeration sheet (12) not facing the temperature control box (11) is fixedly connected to a heat sink (21), and the upper end of the heat sink (21) is fixedly connected to a convection fan (22), and the convection fan (22) is embedded in the upper end of the shell (1) to discharge air outwards.

7. A medical molecular sieve oxygen concentrator according to claim 1, characterized in that A corrugated sheet (23) is evenly and fixedly connected to the middle section of one end of the semiconductor refrigeration sheet (12) facing the temperature control box (11), and the corrugated sheet (23) is made of a material with high thermal conductivity.

8. A medical molecular sieve oxygen concentrator according to claim 7, characterized in that The air inlet port and the air outlet port of the temperature control box (11) are arranged with a staggered height.

9. A medical molecular sieve oxygen concentrator according to claim 1, characterized in that An oxygen storage tower (24) is also fixedly connected between the two molecular sieve towers (7), and the oxygen storage tower (24) is communicated with the oxygen outlet of the molecular sieve tower (7). A composite air pump (25) is installed at the top outlet of the oxygen storage tower (24), and the oxygen in the oxygen storage tower (24) is output to the outside along the oxygen outlet pipeline (26) through the composite air pump (25).

10. A medical molecular sieve oxygen concentrator according to claim 9, characterized in that The oxygen outlet pipeline (26) of the oxygen storage tower (24) is also provided with a pipeline for one-way output to the molecular sieve tower (7), and the composite air pump (25) has two airflow output modes: pulse output and voltage-stabilized output.

Images