Adsorption device for portable oxygen generator

Abstract

The present application relates to the technical field of portable oxygen generator, and specifically discloses an adsorption device for portable oxygen generator, which comprises a portable shell and an adsorption mechanism, the portable shell is provided with an air inlet through hole and an air outlet through hole, the adsorption mechanism comprises an oxygen enrichment element, the portable shell is provided with a gas supply pipe head, and a gas flow pipeline is connected between the oxygen enrichment element and the gas supply pipe head; the adsorption device further comprises a gas supply air pump, the gas supply air pump is located between the oxygen enrichment element and the gas supply pipe head, and the adsorption device further comprises an auxiliary gas pipe and an auxiliary gas valve, the auxiliary gas valve is located on the auxiliary gas pipe, one end of the auxiliary gas pipe is connected with the gas flow pipeline, and the connection point is located between the oxygen enrichment element and the gas supply air pump; the adsorption device further comprises a humidity sensor, which is used for humidity detection in the gas flow pipeline. When water is removed in the gas flow pipeline by connecting the auxiliary gas pipe in parallel with the oxygen enrichment element, the gas can enter the gas flow pipeline without passing through the oxygen enrichment element, the water removal effect is high, and the consumption of oxygen is small.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of portable oxygen generator, and particularly relates to an adsorption device for portable oxygen generator. BACKGROUND

[0002] A portable oxygen generator is a medical device that can provide high-concentration oxygen anytime and anywhere, mainly used to improve the hypoxia state of the human body. It extracts oxygen from air through physical or chemical methods, helping people with respiratory diseases or in low-oxygen environments such as high altitudes to maintain normal blood oxygen levels. Compared with traditional large oxygen generators, it weighs less than 5 kg, has a volume smaller than an ordinary backpack, and has a built-in battery that can support continuous operation for several hours, making it suitable for use at home, on the go, or even on trips. For patients with chronic obstructive pulmonary disease, pulmonary fibrosis, and people with heart function insufficiency, portable oxygen generators can significantly improve daily activity. In recent years, with technological advances, such devices have significantly improved in noise control, oxygen concentration stability, and other aspects, and have become an important tool in the field of respiratory support.

[0003] Oxygen-enriched membranes are the core components of oxygen generators that use physical methods to produce oxygen. An oxygen-enriched membrane is made of high-molecular-weight materials such as polydimethylsiloxane (PDMS) and polypropylene (PP), and has an oxygen adsorption-diffusion mechanism. Gas molecules first dissolve in the membrane material and then diffuse to the other side through a concentration gradient. The solubility and diffusion coefficient of oxygen in the membrane are higher than those of nitrogen, allowing separation. The oxygen content in air through a single-layer oxygen-enriched membrane can be increased by about 30%, and compared with traditional oxygen production methods, energy can be saved by 10%-25%.

[0004] A gas path system of a portable oxygen generator is disclosed in Chinese patent document CN220432354U, which includes an oxygen production gas path and an auxiliary gas path, as well as a controller electrically connected to the oxygen production gas path and the auxiliary gas path. The air inlet ends of the oxygen production gas path and the auxiliary gas path are in sealed communication with the air inlet of the oxygen generator, the oxygen outlet end of the oxygen production gas path is in sealed communication with the oxygen outlet of the oxygen generator, and the exhaust end of the auxiliary gas path is in sealed communication with the exhaust outlet of the oxygen generator. The oxygen production gas path includes a continuous oxygen supply gas path and a pulse oxygen supply gas path, as well as an air pump for driving air flow. The auxiliary gas path is used to cool and dissipate heat for the oxygen production gas path and accelerate air flow through the oxygen production components on the oxygen production gas path.

[0005] In the above technical solution, two mutually parallel and integrally closed airflow pipelines are arranged between the oxygen-enriched membrane group and the three-way valve. In a plateau environment or other environment with large temperature difference, water vapor condensation and water mist or water droplets are easily formed in the oxygen generator. After water vapor is accumulated in the pipeline, the exhaust port is almost the only outlet for the water vapor, which has to be carried out by the airflow passing through the oxygen-enriched membrane group. Thus, the water vapor formed in the pipeline has a great negative impact on the smoothness of the pipeline and the purity of the subsequent supplied gas. If the air pump is started before use to discharge the water vapor in the pipeline by high-speed airflow, the oxygen generated by the oxygen-enriched membrane group will be wasted to a great extent. SUMMARY

[0006] The application provides an adsorption device for a portable oxygen generator, aiming to improve the negative impact of water vapor in the pipeline in the related art.

[0007] The adsorption device for the portable oxygen generator comprises a portable machine shell and an adsorption mechanism. The portable machine shell is provided with an air inlet through hole and an air outlet through hole. The adsorption mechanism comprises an oxygen-enriching element. The portable machine shell is provided with a gas supply pipe head. An airflow pipeline is connected between the oxygen-enriching element and the gas supply pipe head. The adsorption device further comprises a gas supply air pump, an auxiliary air pipe and an auxiliary air valve. The auxiliary air valve is located on the auxiliary air pipe. One end of the auxiliary air pipe is connected to the airflow pipeline, and the connection point is located between the oxygen-enriching element and the gas supply air pump. The adsorption device further comprises a humidity sensor for detecting the humidity in the airflow pipeline.

[0008] The oxygen-enriching element is used for oxygen generation. The auxiliary air pipe and the oxygen-enriching element form two air inlet ports for gas entering the airflow pipeline. During use, the auxiliary air valve is closed. Airflow enters the portable machine shell through the air inlet through hole, passes through the oxygen-enriching element, and the oxygen-enriching element collects and supplies oxygen under the action of the airflow. Before use, the auxiliary air valve is opened. Under the action of the gas supply air pump, the gas entering the airflow pipeline through the auxiliary air pipe flows at a high speed. Since the airflow resistance at the oxygen-enriching element is greater, the airflow passing through the oxygen-enriching element at this time is weaker, and the consumption of oxygen collected by the oxygen-enriching element is smaller. That is, the gas flowing into the airflow pipeline has a smaller oxygen content and a higher airflow intensity, which can effectively move the condensed water in the airflow pipeline to the gas supply pipe head, thereby discharging the water vapor in the pipeline under the premise of reducing the waste of oxygen molecules and reducing the negative impact of water vapor in the airflow pipeline on high-oxygen-content gas during use.

[0009] Preferably, the oxygen-enriching element comprises a support frame and an oxygen-enriching membrane, the oxygen-enriching membrane and the support frame are fixedly connected, an oxygen-enriching space is formed in the support frame by the oxygen-enriching membrane, a support core is fixedly connected to the support frame and located in the oxygen-enriching space, a fixed pipe head is fixedly connected to the support frame, one end of the fixed pipe head is connected to the air flow pipeline, and the other end of the fixed pipe head is communicated with the oxygen-enriching space.

[0010] The effect is that when air passes through the oxygen-enriching element, gas molecules are first dissolved in the membrane material and then diffuse to the side close to the oxygen-enriching space through the concentration gradient; the solubility and diffusion coefficient of oxygen in the membrane are higher than those of nitrogen, thereby realizing separation and the capture of oxygen by the oxygen-enriching membrane; under the premise of starting the air supply air pump, the oxygen-enriching membrane is subjected to a larger air flow pressure, and the support core supports the oxygen-enriching membrane in the oxygen-enriching space, thereby improving the structural stability of the oxygen-enriching membrane.

[0011] Preferably, a plurality of oxygen-enriching elements are provided, the plurality of support frames are arranged side by side, the fixed pipe heads of the plurality of oxygen-enriching elements are commonly connected to the same oxygen-enriching total air pipe, an air passing gap is formed between two adjacent oxygen-enriching elements, the opening directions of the air inlet through hole and the air outlet through hole are parallel, and the oxygen-enriching element is located between the air inlet through hole and the air outlet through hole; the membrane surface of the oxygen-enriching membrane is perpendicular to the arrangement direction of the plurality of oxygen-enriching elements and parallel to the opening direction of the air inlet through hole; and an air inlet fan is arranged in the portable shell and at the air inlet through hole.

[0012] The effect is that the air inlet fan improves the gas flow efficiency inside the portable shell, the contact efficiency of the oxygen-enriching membrane and fresh air is increased, and thereby the oxygen collection rate of the oxygen-enriching membrane is improved.

[0013] Preferably, an air flow pressure stabilizing tank is fixedly connected in the portable shell, the air flow pressure stabilizing tank is communicated with the air flow pipeline between the air supply pipe head and the air supply air pump, and the air outlet of the air flow pressure stabilizing tank is coaxial with the air supply pipe head.

[0014] The effect is that the gas carrying water vapor has a reduced flow rate after entering the air flow pressure stabilizing tank, and liquid water is accumulated and aggregated in the air flow pressure stabilizing tank; when the amount of water accumulation in the air flow pressure stabilizing tank increases, the water has fluidity, and the operator can invert the portable shell to make the air supply pipe head face the ground, so as to pour out the water in the air flow pressure stabilizing tank.

[0015] Preferably, the support frames located on both sides of the air passing gap are relatively close to or far from each other, and the adsorption mechanism further comprises an adjusting assembly for controlling the movement of the support frames, and when the auxiliary air valve is opened, the adjacent support frames abut against each other.

[0016] The effect is that the control of the support frame movement can change the width of the air passing gap between two adjacent support frames, when the gap between two support frames disappears, the oxygen-enriched membrane between two adjacent support frames is no longer in contact with the external space, that is, the air volume passing through the oxygen-enriched membrane in this part is reduced after the air supply pump is started, and the oxygen consumption on the oxygen-enriched membrane is also reduced.

[0017] Preferably, the adjusting assembly comprises an adjusting guide column, a pressure piece and a matching spring, the adjusting guide column and the portable shell are relatively fixed, the length direction of the adjusting guide column is parallel to the arrangement direction of the plurality of support frames, the adjusting guide column passes through the plurality of support frames, the matching spring is coaxially sleeved on the adjusting guide column, the two ends of the matching spring are respectively connected to two adjacent support frames, and the pressure piece is used to apply a pushing force to the support frame, the direction of the pushing force is parallel to the extension direction of the matching spring.

[0018] The effect is that the adjusting guide column positions and supports each support frame, and provides guidance for the sliding of the support frame, the pushing force of the pressure piece on the edge support frame is opposite to the elastic force of the matching spring on the support frame, and the two forces cooperate with each other to realize the position adjustment of the support frame.

[0019] Preferably, the number of the support frames is three, the pressure piece is a pressure square frame, the pressure square frame comprises two connecting end plates and two force applying push rods, the connecting end plates and the force applying push rods are fixedly connected, the connecting end plates are rotationally connected to the middle support frame, the rotation axis is perpendicular to the arrangement direction of the support frame, the length direction of the force applying push rod is parallel to the rotation axis of the connecting end plate, and the three support frames are located between the two force applying push rods.

[0020] The effect is that when the pressure square frame rotates, the two force applying push rods abut against and push the two edge support frames from both sides of the oxygen-enriched element, so that the two support frames can move towards the middle support frame at the same time, and finally each support frame abuts against in turn.

[0021] Preferably, the oxygen-enriched total air pipe comprises a straight pipe part and an extension pipe part, a single straight pipe part and a fixed pipe head on a support frame are fixedly connected and communicated, and two adjacent straight pipe parts are communicated through an extension pipe part.

[0022] The effect is that the extension pipe part can be axially deformed, so that the oxygen-enriched total air pipe can be axially deformed, in the process of the movement of the support frame, the movement of the support frame is accompanied by the change of the relative position of each fixed pipe head, and the oxygen-enriched total air pipe which can be axially deformed can keep the continuous and stable sealing communication between the oxygen-enriched space and the air flow pipeline.

[0023] Preferably, the intermediate support frame is fixedly connected with an adjusting guide column, one end of the adjusting guide column is rotatably connected with a mounting threaded cylinder, the inner wall of the portable casing is fixedly connected with a mounting screw rod, and the mounting screw rod and the mounting threaded cylinder are coaxially threadedly connected.

[0024] The effect of the above technical scheme is that the mounting threaded cylinder is threadedly connected with the mounting screw rod, the mounting threaded cylinder is fixedly connected with the portable casing, the adjusting guide column is connected and mounted with the portable casing through the mounting threaded cylinder, and the installation of each oxygen-enriching element on the adjusting guide column in the portable casing is realized.

[0025] Preferably, the portable casing is internally provided with a driving motor, the connecting end plate is fixedly connected with a connecting rotating shaft, the connecting rotating shaft is rotatably connected with the intermediate support frame, a matching sleeve is coaxially and slidingly arranged at one end of the connecting rotating shaft away from the support frame, a connecting spring is connected between the matching sleeve and the connecting rotating shaft, the output shaft of the driving motor and the cross section of the matching sleeve are both non-circular, and in a natural state, when the axis of the connecting rotating shaft coincides with the output shaft of the driving motor, the matching sleeve is sleeved on the output shaft of the driving motor.

[0026] The effect of the above technical scheme is that after the oxygen-enriching element is mounted in the portable casing through the adjusting guide column and the mounting threaded cylinder, the matching sleeve on the connecting rotating shaft can be sleeved on the output shaft of the driving motor and can cooperate with each other, and the output shaft of the driving motor can transmit torque to the pressure box through the matching sleeve and the connecting rotating shaft, so that the pressure box can rotate.

[0027] The above technical scheme has the following beneficial effects of the present application:

[0028] In the present application, the auxiliary air valve and the auxiliary air pipe are connected in parallel with the oxygen-enriching element, the auxiliary air valve is opened when water vapor accumulates in the air flow pipeline, the air flow pipeline can form a high-strength air flow after the air supply pump is opened due to the small connection resistance between the auxiliary air pipe and the outside, the liquid water along the way is pushed away, the water can be smoothly discharged, the consumption of oxygen molecules accumulated on the oxygen-enriching membrane is small, the use rate of the oxygen-enriching membrane is changed by the adjusting assembly by changing the relative positions of the support frames, and the air resistance at the oxygen-enriching element in the water removal mode is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a whole structure schematic view of the adsorption device for the portable oxygen generator in the embodiment one of the present application.

[0030] Figure 2 is a gas passage schematic view of the adsorption device for the portable oxygen generator in the embodiment one of the present application.

[0031] Figure 3is a structural schematic view of the adsorption mechanism in the embodiment one of the present application.

[0032] Figure 4 is a structural schematic view of the oxygen enrichment element in the embodiment two of the present application.

[0033] Figure 5 is a structural schematic view of the oxygen enrichment element in the oxygen collection mode in the embodiment two of the present application.

[0034] Figure 6 is a structural schematic view of the oxygen enrichment element in the water removal mode in the embodiment two of the present application.

[0035] Figure 7 is a structural schematic view of the cooperation structure of the driving motor and the connecting shaft in the embodiment two of the present application.

[0036] Reference signs:

[0037] 1, portable shell; 11, air inlet through hole; 12, air outlet through hole; 13, air supply pipe head; 14, mounting screw; 15, humidity sensor; 16, oxygen concentration sensor; 17, control circuit board; 171, battery module; 18, display screen; 2, air supply air pump; 21, air flow pipeline; 22, auxiliary air valve; 221, auxiliary air pipe; 23, air flow pressure stabilizing tank; 3, adsorption mechanism; 31, air inlet fan; 32, oxygen enrichment element; 321, oxygen enrichment membrane; 322, support frame; 323, oxygen enrichment space; 324, support core body; 325, fixed pipe head; 33, oxygen enrichment total air pipe; 331, straight pipe part; 332, telescopic pipe part; 34, air passing gap; 4, adjusting assembly; 41, adjusting guide column; 411, mounting threaded cylinder; 42, cooperation spring; 43, pressure piece; 431, pressure square frame; 4311, connecting end plate; 4312, force applying push rod; 4313, contact sleeve; 432, connecting shaft; 44, cooperation sleeve; 441, connecting spring; 45, driving motor. DETAILED DESCRIPTION

[0038] The present application is described below in combination with Figures 1 to 7 A portable oxygen generator adsorption device is described.

[0039] Embodiment one:

[0040] The present embodiment discloses a portable oxygen generator adsorption device, like Figure 1 , Figure 2 and Figure 3As shown, the oxygen generator includes a portable shell 1, the inside of the portable shell 1 is provided with an adsorption mechanism 3, a gas supply air pump 2, a battery module 171, a control circuit board 17, an oxygen concentration sensor 16, the portable shell 1 is provided with a gas inlet and outlet hole 11 and a gas outlet hole 12, and the portable shell 1 is fixedly provided with a gas supply pipe head 13, the adsorption mechanism 3 is used for capturing oxygen molecules in the airflow entering the portable shell 1, and the adsorption mechanism 3 includes an oxygen-enriching element 32, the oxygen-enriching element 32, the gas supply air pump 2, the oxygen concentration sensor 16 and the gas supply pipe head 13 are sequentially connected through an airflow pipeline 21. The oxygen concentration sensor 16 is used for detecting the oxygen content in the gas passing through. In the embodiment, the portable shell 1 is a plastic shell with a whole appearance of a rectangular cuboid, one side surface of the portable shell 1 is provided with an operation button and a display screen 18, the gas supply pipe head 13 is located on the side where the display screen 18 is located, and the display screen 18 is used for displaying information such as power, working mode, oxygen concentration of the supplied gas and humidity; when in use, an operator can easily hold the portable shell 1, at this time, the length direction of the gas supply pipe head 13 is vertical, and the side where the gas supply pipe head 13 is located is the upper side, and the gas inlet hole 11 and the gas outlet hole 12 are respectively located on the opposite side walls of the portable shell 1 close to the bottom. The battery module 171 is used for supplying power to the control circuit board 17, the oxygen concentration sensor 16, the gas supply air pump 2 and the display screen 18.

[0041] As shown in Figure 1 and Figure 3 As shown, the oxygen-enriching element 32 includes a support frame 322 and an oxygen-enriching membrane 321, the oxygen-enriching membrane 321 is fixedly installed on the support frame 322, the support frame 322 is a square frame, and the oxygen-enriching element 32 has three, the number of the oxygen-enriching membranes 321 on a single support frame 322 is two, and the two oxygen-enriching membranes 321 are respectively located on the opposite sides of the support frame 322 and the membrane surfaces are parallel to each other. The three support frames 322 are arranged side by side, the arrangement direction is perpendicular to the membrane surface of the oxygen-enriching membrane 321, and a wind passing gap 34 is formed between adjacent two oxygen-enriching elements 32, the opening directions of the gas inlet hole 11 and the gas outlet hole 12 are parallel, and the oxygen-enriching element 32 is located between the gas outlet hole 12 and the gas inlet hole 11, the opening directions of the gas outlet hole 12 and the gas inlet hole 11 are parallel to the membrane surface of the oxygen-enriching membrane 321, that is, the airflow enters the gas inlet hole 11 without changing the flow direction, then directly passes through the wind passing gap 34 and then flows out of the portable shell 1 from the gas outlet hole 12. An air inlet fan 31 is fixedly installed in the portable shell 1 and at the gas inlet hole 11, and the air inlet fan 31 can generate an airflow from the external space into the space in the portable shell 1 when working, thereby improving the speed of fresh air entering the portable shell 1.

[0042] As shown in Figure 3As shown, the oxygen-enriched space 323 is formed in the support frame 322 by the oxygen-enriched membrane 321, the fixed pipe head 325 is fixedly connected to the support frame 322, the fixed pipe heads 325 of the three oxygen-enriched elements 32 are jointly connected to the same oxygen-enriched total gas pipe 33, the oxygen-enriched total gas pipe 33 is connected to the port of the airflow pipeline 21, when the air supply air pump 2 is started, the negative pressure is generated in the oxygen-enriched space 323, the oxygen molecules captured on the oxygen-enriched membrane 321 are brought into the airflow pipeline 21, and finally the air supply pipe head 13 can supply the gas with high oxygen concentration to the outside. The support core 324 is fixedly connected to the support frame 322, and the support core 324 is located in the oxygen-enriched space 323 and is used for structurally supporting the oxygen-enriched membrane 321; the support core 324 is a plastic plate with a convex groove structure on the surface, under the action of the air supply air pump 2, when the gas passes through the oxygen-enriched membrane 321 and enters the oxygen-enriched space 323, the gas pressure will make the oxygen-enriched membrane 321 have a bending deformation trend towards the oxygen-enriched space 323, the support core 324 can generate a counter-deformation supporting force on the oxygen-enriched membrane 321, thereby improving the structural stability of the oxygen-enriched membrane 321, and the groove structure of the support core 324 itself can also enable the gas entering the oxygen-enriched space 323 to flow relatively freely.

[0043] As shown in Figure 1 and Figure 2 , the airflow stabilizing tank 23 is further arranged in the portable shell 1 and is connected to the air supply pipeline between the oxygen concentration sensor 16 and the air supply pipe head 13. The adsorption device further includes an auxiliary air pipe 221, an auxiliary air valve 22 and a humidity sensor 15, one end of the auxiliary air pipe 221 is connected to the airflow pipeline 21 and the connection point is located between the oxygen-enriched element 32 and the air supply air pump 2, and the other end is open; the auxiliary air valve 22 is located on the auxiliary air pipe 221, the auxiliary air valve 22 is an electromagnetic valve, the battery module 171 provides working energy for the auxiliary air valve 22, and the opening and closing of the auxiliary air valve 22 controls whether the auxiliary air pipe 221 is conductive. The water vapor in the airflow pipeline 21 mainly condenses in the part between the air supply air pump 2 and the airflow stabilizing tank 23, and the detection point of the humidity sensor 15 is located on the air supply pipeline between the air supply air pump 2 and the oxygen concentration sensor 16 and between the oxygen concentration sensor 16 and the airflow stabilizing tank 23. The gas outlet of the airflow stabilizing tank 23 is coaxial with the air supply pipe head 13, the gas flow rate decreases after entering the airflow stabilizing tank 23, and the liquid water is stored and aggregated in the airflow stabilizing tank 23.

[0044] The working process and principle of the embodiment: when the humidity sensor 15 detects that water vapor condensation occurs in the air flow pipeline 21, feedback is given to the control circuit board 17, and the operator can control the auxiliary air valve 22 to open, the auxiliary air pipe 221 to be conducted, at this time, the air supply pump 2 is started, the equipment enters the drainage mode, and the air flow in the portable shell 1 can smoothly enter the air flow pipeline 21 through the auxiliary air pipe 221. Because the air resistance in the auxiliary air pipe 221 is relatively small, the gas flow rate and flow in the air flow pipeline 21 are relatively high, and the gas entrained in the air flow pipeline 21 moves towards the air supply pipe head 13. Because of the existence of the oxygen-enriched membrane 321, the resistance of air entering the air flow pipeline 21 through the oxygen-enriched element 32 is relatively large, so the air flow at this position is greatly reduced, the amount of oxygen molecules that can be carried away from the oxygen-enriched membrane 321 by air pressure is also small, and thus the oxygen content of the gas in the air flow pipeline 21 is low, and the consumption of oxygen collected by the oxygen-enriched element 32 is small. When the water content in the air flow stabilizing tank 23 increases to form water droplets, the water droplets have fluidity, and the operator can invert the portable shell 1 to make the air supply pipe head 13 face the ground and gently shake, so that the water in the air flow stabilizing tank 23 is poured out under the action of gravity.

[0045] Embodiment two:

[0046] As shown in Figure 4 , Figure 5 and Figure 6 , the difference from embodiment one is that the adsorption mechanism 3 further comprises an adjusting assembly 4 for controlling the movement of the two support frames 322 located at the side, and the moving direction is perpendicular to the membrane surface of the oxygen-enriched membrane 321. The adjusting assembly 4 comprises adjusting guide columns 41, pressure pieces 43 and cooperating springs 42. The length direction of the adjusting guide column 41 is parallel to the arrangement direction of the plurality of support frames 322, and the number of the adjusting guide column 41 is four. The four adjusting guide columns 41 are respectively located at the four corner edges of the support frame 322. Each adjusting guide column 41 penetrates through three support frames 322, the cooperating spring 42 is coaxially sleeved on the adjusting guide column 41 and located between the adjacent two support frames 322, and the two ends of the cooperating spring 42 are respectively connected to the adjacent two support frames 322. In the natural state of the cooperating spring 42, the width of the air passing gap 34 between the adjacent two oxygen-enriched elements 32 is 1.5 cm. The middle support frame 322 and the adjusting guide column 41 are fixedly connected, and the two side support frames 322 and the adjusting guide column 41 are slidingly connected, and the sliding direction is the length direction of the adjusting guide column 41. One end of the adjusting guide column 41 is coaxially and rotatably connected to a mounting threaded cylinder 411, and the inner wall of the portable shell 1 is fixedly connected to a mounting screw rod 14. The mounting screw rod 14 and the mounting threaded cylinder 411 are coaxially and threadedly connected, so as to realize the mounting of the adjusting guide column 41 and each oxygen-enriched element 32 in the portable shell 1.

[0047] As shown in Figure 4 , Figure 5 andFigure 6 As shown, the pressure piece 43 is used to apply a pushing force to the support frame 322 at the edge, so that the support frame 322 at the edge moves to the support frame 322 in the middle. The pressure piece 43 is a pressure square 431, which includes two connecting end plates 4311 and two force applying push rods 4312. The two connecting end plates 4311 have parallel plate surfaces, and the two force applying push rods 4312 are located between the two connecting end plates 4311. The plate surfaces of the connecting end plates 4311 are perpendicular to the length direction of the force applying push rods 4312. The connecting end plates 4311 are fixedly connected with a connecting rotating shaft 432, which is rotationally connected with the support frame 322 in the middle. The rotating axis is perpendicular to the arrangement direction of the support frame 322. The length direction of the force applying push rods 4312 is parallel to the rotating axis of the connecting end plates 4311. The three support frames 322 are located in the space formed by the two force applying push rods 4312 and the two connecting end plates 4311. When the connecting end plates 4311 rotate, the force applying push rods 4312 can generate a pushing force to the support frame 322 at the edge, which is towards the air passing gap 34. The force applying push rods 4312 are coaxially sleeved with a contact sleeve 4313. When the force applying push rods 4312 apply pressure to the support frame 322, the outer side wall of the contact sleeve 4313 directly rolls against the support frame 322.

[0048] As shown in Figure 4 and Figure 7 The portable shell 1 is provided with a driving motor 45. The end of the connecting rotating shaft 432 away from the support frame 322 is coaxially and slidingly provided with a matching sleeve 44. After the matching connection of the mounting threaded cylinders 411 and the mounting screws 14 is completed, the matching sleeve 44 is coaxial with the output shaft of the driving motor 45. The output shaft of the driving motor 45 and the connecting rotating shaft 432 and the matching sleeve 44 all have a square cross section. The matching sleeve 44 and the connecting rotating shaft 432 are connected with a connecting spring 441. In a natural state, when the oxygen enrichment element 32 is matched and connected in the portable shell 1 through the mounting screws 14 and the mounting threaded cylinders 411, the matching sleeve 44 is sleeved on the output shaft of the driving motor 45. That is, when the output shaft of the driving motor 45 rotates, it can transmit torque to the matching sleeve 44 and the connecting rotating shaft 432 to make them rotate synchronously, so as to realize the rotating control of the pressure square 431. When the oxygen enrichment element 32 is disassembled, the matching sleeve 44 is pushed to the direction that can compress the connecting spring 441, so that the output shaft of the driving motor 45 can not hinder the movement of the matching sleeve 44. After the driving motor 45 is started, the pressure square 431 rotates, the force applying push rods 4312 push the support frames 322 on both sides to move close to the support frame 322 in the middle, and finally the two adjacent support frames 322 abut against each other, and the air passing gap 34 between the two adjacent support frames 322 disappears.

[0049] As shown in Figure 5As shown, in order to keep the support frame 322 sealing and unobstructed to the air path of the oxygen-enriched element 32 to the air flow pipeline 21 when moving, the oxygen-enriched total gas pipeline 33 in the embodiment includes three straight pipe sections 331 and two telescopic pipe sections 332, a single straight pipe section 331 and a fixed pipe head 325 on the support frame 322 are fixedly connected and communicated, and two adjacent straight pipe sections 331 are communicated through a telescopic pipe section 332. The telescopic pipe section 332 is a telescopic bellows, and the end portion and the pipe opening of the straight pipe section 331 are coaxially fixedly connected.

[0050] The working process and principle of the embodiment: when collecting and supplying oxygen, the overwind gap 34 remains, and each oxygen-enriched membrane 321 is in a working state; when discharging water vapor, the adjusting mechanism controls the two edge support frames 322 to move towards the middle support frame 322, and the overwind gap 34 no longer exists. The number of oxygen-enriched membranes 321 through which air can pass into the oxygen-enriched space 323 changes from six to two, i.e., only the oxygen-enriched membranes 321 on the side of the edge support frames 322 away from the middle support frame 322 can supply air, and the resistance of the oxygen-enriched element 32 to the air entering the air flow pipeline 21 is further increased, and the air flow intensity is further reduced, thereby further increasing the relative air flow intensity of the air entering the air flow pipeline 21 through the auxiliary air valve 22 and reducing the consumption of oxygen molecules on the oxygen-enriched element 32.

[0051] Although the embodiments of the present application have been shown and described above, it should be understood that the above description and drawings of the embodiments are exemplary and are intended to explain the inventive concept of the present application, and should not be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

Claims

1. An adsorption device for a portable oxygen generator, comprising a portable casing and an adsorption mechanism, the portable casing being provided with an air inlet hole and an air outlet hole, the adsorption mechanism comprising an oxygen enrichment element, the portable casing being provided with a gas supply pipe head, the oxygen enrichment element and the gas supply pipe head being connected by a gas flow pipeline; characterized in that the device further comprising a gas supply air pump, the gas supply air pump being located between the oxygen enrichment element and the gas supply pipe head, an auxiliary gas pipe and an auxiliary gas valve, the auxiliary gas valve being located on the auxiliary gas pipe, one end of the auxiliary gas pipe being connected to the gas flow pipeline and the connection point being located between the oxygen enrichment element and the gas supply air pump, and a humidity sensor for detecting the humidity in the gas flow pipeline; the oxygen enrichment element comprising a support frame and an oxygen enrichment membrane, the oxygen enrichment membrane being fixedly connected to the support frame, the support frame being provided with an oxygen enrichment space by the oxygen enrichment membrane, the support frame being fixedly connected to a support core, the support core being a plastic plate with a convex groove structure on the surface, the groove structure on the plastic plate allowing the gas entering the oxygen enrichment space to flow relatively freely, the support core being located in the oxygen enrichment space, the support frame being fixedly connected to a fixed pipe head, one end of the fixed pipe head being connected to the gas flow pipeline and the other end being in communication with the oxygen enrichment space; the portable casing being fixedly connected to a gas flow stabilizing tank, the gas flow stabilizing tank being in communication with the gas flow pipeline between the gas supply pipe head and the gas supply air pump, the gas outlet of the gas flow stabilizing tank being coaxial with the gas supply pipe head, the gas flow rate being reduced after entering the gas flow stabilizing tank, and liquid water being accumulated and gathered in the gas flow stabilizing tank; the auxiliary gas valve being opened, the auxiliary gas pipe being connected, the gas supply air pump being started, the device entering a water drainage mode, and the gas carrying the condensed water in the gas flow pipeline moving towards the gas supply pipe head; a plurality of oxygen enrichment elements being provided, the plurality of support frames being arranged side by side, the fixed pipe heads of the plurality of oxygen enrichment elements being commonly connected to a same oxygen enrichment main gas pipe, an air flow gap being formed between two adjacent oxygen enrichment elements, the opening directions of the air inlet hole and the air outlet hole being parallel and the oxygen enrichment element being located between the air outlet hole and the air inlet hole, the membrane surface of the oxygen enrichment membrane being perpendicular to the arrangement direction of the plurality of oxygen enrichment elements and parallel to the opening direction of the air inlet hole, and an air inlet fan being provided in the portable casing and at the air inlet hole; the support frames located on both sides of the air flow gap being relatively close or far away from each other, the adsorption mechanism further comprising an adjusting assembly for controlling the movement of the support frames, and the adjacent support frames being abutted when the auxiliary gas valve is opened.

2. The adsorption device for portable oxygen generator according to claim 1, wherein the adjusting assembly comprising an adjusting guide column, a pressure piece and a matching spring, the adjusting guide column being fixed relative to the portable casing, the length direction of the adjusting guide column being parallel to the arrangement direction of the plurality of support frames, the adjusting guide column penetrating through the plurality of support frames, the matching spring being coaxially sleeved on the adjusting guide column, the two ends of the matching spring being respectively connected to two adjacent support frames, and the pressure piece being used for applying a pushing force to the support frames, the direction of the pushing force being parallel to the extension direction of the matching spring.

3. The adsorption device for portable oxygen generator according to claim 2, wherein The number of the support frames is three, the pressure piece is a pressure square frame, the pressure square frame comprises two connecting end plates and two force applying push rods, the connecting end plates and the force applying push rods are fixedly connected, the connecting end plates and the support frame located in the middle are rotationally connected, the rotation axis is perpendicular to the arrangement direction of the support frame, the length direction of the force applying push rod is parallel to the rotation axis of the connecting end plate, the three support frames are located between the two force applying push rods, and the force applying push rods generate a pushing force towards the wind gap to the support frames located at the edges.

4. The adsorption device for portable oxygen generator according to claim 2 or 3, characterized in that, The oxygen-enriched total gas pipe comprises a hard straight pipe part and an elastic pipe part, a single hard straight pipe part and a fixed pipe head on a support frame are fixedly connected and communicated, two adjacent hard straight pipe parts are communicated through an elastic pipe part, and the axial length of the elastic pipe part can be changed.

5. The adsorption device for portable oxygen generator according to claim 3, wherein The support frame located in the middle is fixedly connected with an adjusting guide column, one end of the adjusting guide column is rotationally connected with a mounting threaded cylinder, a mounting screw rod is fixedly connected to the inner wall of the portable shell, and the mounting screw rod and the mounting threaded cylinder are coaxially and threadedly connected.

6. The adsorption device for portable oxygen generator according to claim 5, wherein The portable shell is internally provided with a driving motor, a connecting rotating shaft is fixedly connected to the connecting end plate, the connecting rotating shaft and the support frame located in the middle are rotationally connected, a matching sleeve is coaxially and slidingly arranged at the end of the connecting rotating shaft away from the support frame, a connecting spring is connected between the matching sleeve and the connecting rotating shaft, the output shaft of the driving motor and the matching sleeve are both non-circular in section, and in a natural state, when the axis of the connecting rotating shaft and the output shaft of the driving motor coincide, the matching sleeve is sleeved on the output shaft of the driving motor.

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