CN113663475A - Portable oxygen generator and method of use - Google Patents

Abstract

Translated fromChinese

本发明公开了便携式制氧机及其使用方法，该制氧机包括空气加压机构、压缩空气缓存罐、第一吸附舱、第二吸附舱、氧气缓存舱和气路延时开关组；压缩空气缓存罐通过吸附气路分别与两吸附舱连通，两吸附舱分别通过冲洗气路与氧气缓存舱连通、通过排气气路与氧气缓存舱连通，气路延时开关组通过控制气路调节件来控制对应的吸附气路、冲洗气路、排气气路和解吸气路分别打开和闭合；空气加压机构包括空气加压舱、活塞和滚轮，滚轮与摇臂固定连接，通过摇臂的转动能够实现活塞在空气加压舱内的往复运动，将空气压入压缩空气缓存罐。本发明的制氧机结构简单，占用空间小，可通过多种方式提供动力，特别是可以完全不需要电力，以纯手动的方式制取氧气。

The invention discloses a portable oxygen generator and a method of using the same. The oxygen generator comprises an air pressurizing mechanism, a compressed air buffer tank, a first adsorption chamber, a second adsorption chamber, an oxygen buffer chamber and an air circuit delay switch group; compressed air The buffer tank is communicated with the two adsorption chambers respectively through the adsorption air path, the two adsorption chambers are respectively connected with the oxygen buffer chamber through the flushing air path, and communicated with the oxygen cache chamber through the exhaust air path, and the air path delay switch group is controlled by the air path regulator To control the opening and closing of the corresponding adsorption air path, flushing air path, exhaust air path and desorption air path respectively; the air pressurizing mechanism includes an air pressurizing chamber, a piston and a roller, the roller is fixedly connected with the rocker arm, and the The rotation enables the reciprocating motion of the piston in the air pressurized chamber to press the air into the compressed air buffer tank. The oxygen generator of the present invention has a simple structure and a small occupied space, and can provide power in various ways, in particular, it can produce oxygen in a purely manual way without electricity at all.

Description

Portable oxygen generator and use method thereof

Technical Field

The invention relates to the technical field of oxygen generation by molecular sieve pressure swing adsorption, in particular to a portable oxygen generator and a using method thereof.

Background

The pressure swing adsorption air separation oxygen production uses zeolite molecular sieve as adsorbent, and adopts pressure swing adsorption raw material at normal tempThe principle of separating air to produce high purity oxygen (PSA) is based on: the diffusion rate of oxygen and nitrogen gas molecules on the surface of the molecular sieve is different, and the gas molecules (O) with smaller diameter₂) The diffusion rate is faster, the gas molecules (N) with larger diameter enter the micropores of the carbon molecular sieve more₂) The diffusion rate is slower, and the micropores entering the carbon molecular sieve are less. By utilizing the difference of the selective adsorptivity of the carbon molecular sieve to nitrogen and oxygen, oxygen is enriched in an adsorption phase in a short time, nitrogen is enriched in a gas phase, oxygen and nitrogen are separated to obtain a gas-phase enriched oxygen. The pressure swing adsorption oxygen production device has the advantages of simplicity, flexibility, low failure rate, easy maintenance, high automation degree, convenient operation, low energy consumption and the like, and is suitable for medium and small-scale air separation oxygen production occasions.

The existing Pressure Swing Adsorption (PSA) oxygen generating equipment basically adopts a miniature air compression pump and various electromagnetic valves to perform air path control, the equipment can not be powered off, and when the electric power is insufficient or no electric power exists in the field, the oxygen generating equipment can not provide oxygen support under emergency. And current oxygenerator all controls compressed air's flow direction and pressure balance time with the solenoid valve, however along with the promotion to oxygenerator quality requirement, time, pressure and the flow that prior art's solenoid valve can't accurate control compressed air got into the oxygenerator make the efficiency of oxygenerator can't improve. Meanwhile, when the valve position is changed in the conventional solenoid valve control mode, obvious airflow noise is generated due to the change of the flow direction and the speed of compressed air.

Disclosure of Invention

Aiming at the technical problems, the invention provides a portable oxygen generator and a using method thereof.

The technical scheme of the invention is as follows:

a portable oxygen generator comprises an air pressurizing mechanism, a compressed air buffer tank, a first adsorption cabin, a second adsorption cabin, an oxygen buffer cabin and an air path delay switch group;

the air pressurizing mechanism is communicated with a compressed air cache tank through a pipeline, the compressed air cache tank is respectively communicated with a first adsorption cabin and a second adsorption cabin through adsorption air paths, oxygen generation molecular sieves are arranged in the two adsorption cabins, the two adsorption cabins are respectively communicated with an oxygen cache cabin through flushing air paths, the two adsorption cabins are also respectively communicated with the oxygen cache cabin through exhaust air paths, desorption air paths are respectively arranged in the two adsorption cabins, and the air path time delay switch group controls the corresponding adsorption air paths, flushing air paths, exhaust air paths and desorption air paths to be opened and closed respectively through controlling an air path adjusting piece;

the air pressurizing mechanism comprises an air pressurizing cabin and a piston arranged in the air pressurizing cabin, a roller running cavity and a roller are arranged in the piston, the roller is in contact with the inner wall of the roller running cavity, the roller is fixedly connected with a rocker arm, and the piston can move back and forth in the air pressurizing cabin by rotating the rocker arm to press air into the compressed air cache tank.

Preferably, the gas circuit time delay switch group includes the cam group drive shaft and fixes a plurality of rotary cam on it, the cam group drive shaft links to each other with power unit, rotary cam includes cam main part and at least one locates the bellying of cam main part outer peripheral face, every rotary cam cooperatees with at least one the gas circuit regulating part rotatory in-process of rotary cam, works as the gas circuit regulating part with during the bellying butt contact, the gas circuit is closed, works as the gas circuit regulating part with during the bellying dislocation, the gas circuit is opened.

Preferably, the air path adjusting piece comprises a contact and a valve body connected with the contact, and the contact is contacted with different positions outside the cam to adjust the opening and closing of the valve body in the rotation process of the cam.

Preferably, the rocker arm is connected with a piston driving shaft, and the piston driving shaft is in transmission connection with a power mechanism.

Preferably, the power mechanism comprises a main driving shaft, and a first speed change gear and a second speed change gear which are arranged on the main driving shaft, the piston driving shaft is provided with a piston driving shaft gear which is meshed with the first speed change gear, and the cam group driving shaft is provided with an air circuit switch group gear which is meshed with the second speed change gear.

Preferably, the main driving shaft is connected with a hand wheel, and the hand wheel is manually operated to drive the main driving shaft to rotate under the condition of no electric power.

Preferably, the main drive shaft is connected to an electric motor, which is powered by a battery, which is a variety of portable batteries, such as lithium batteries, hydrogen fuel cells, and the like.

Preferably, the longitudinal section of the roller running cavity is elliptical or approximately elliptical, and the curvature of the curved surface of the shape determines the running speed of the piston; the long axis direction of the shape is vertical to the motion direction of the piston, and the length of the long axis of the shape is the diameter of the rocker arm; the length of the minor axis of the shape and the diameter of the rocker arm together determine the stroke of the piston.

Preferably, a first external air one-way valve is arranged at the top of the air pressurizing cabin, the top of the air pressurizing cabin is connected with the compressed air cache tank through a first connecting pipe, and the first connecting pipe is provided with a first compressed air one-way valve; the bottom of the air pressurizing cabin is provided with a second external air one-way valve, the bottom of the air pressurizing cabin is connected with the compressed air cache tank through a second connecting pipe, and the second connecting pipe is provided with a second compressed air one-way valve.

The oxygen-producing molecular sieve is an ultra-efficient lithium type molecular sieve particle or a lithium type molecular sieve composite material fused with a special high polymer material.

A use method of a portable oxygen generator comprises the following steps:

s1, driving a main driving shaft by using a hand wheel or a motor as power of a power mechanism to enable the power mechanism to rotate at a certain speed;

s2, the power mechanism drives the piston driving shaft through the gear to enable the rocker arm fixed on the piston driving shaft to rotate, and the rocker arm drives the piston to reciprocate up and down in the air pressurization cabin through the rotation of the rocker arm to press air into the compressed air buffer tank;

and S3 and S2 are simultaneously, the power mechanism drives the cam group driving shaft through a gear, so that the rotating cam fixed on the cam group driving shaft starts to work, and controls the corresponding adsorption gas circuit, flushing gas circuit, exhaust gas circuit and desorption gas circuit to be opened and closed respectively through controlling the gas circuit adjusting piece, so that the first adsorption cabin and the second adsorption cabin sequentially perform adsorption, flushing, pressure equalizing, exhaust and desorption operations, and continuous oxygen generation is realized.

The invention has the beneficial effects that:

(1) the oxygen generator meets the portable requirement, has a simple structure, only adopts a single air pressurizing cabin and a single piston, and occupies small space;

(2) the invention only sets one power mechanism, the occupied space is small, and the power mechanism can be used for driving the rocker arm to rotate so as to drive the air pressurizing mechanism to work, and can also be used for driving the cam group driving shaft to rotate so as to drive the air path delay switch group to work, the power mechanism can provide power through various modes such as a motor, a hand wheel and the like so as to prepare oxygen, and particularly, the oxygen can be prepared in a pure manual mode without electric power;

(3) the cam type gas path delay switch group is adopted, the plurality of rotary cams are arranged on the same shaft, multi-gas path combined time sequence switch control is realized, the cam type gas path delay switch group can accurately control the time, pressure and flow of compressed air entering the oxygen generator, the efficiency of the oxygen generator is favorably ensured, and in the using process, the first adsorption cabin and the second adsorption cabin sequentially perform adsorption, flushing, pressure equalizing, exhaust, desorption and other operations through the gas path delay switch group, so that continuous oxygen generation is realized;

(4) the oxygen production efficiency of the oxygen generator is 1-100L per minute.

Drawings

The invention is further described with reference to the following figures and examples:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2A is a side schematic view of the air pressurization mechanism of the present invention;

FIG. 2B is a schematic front view of the air pressurization mechanism of the present invention;

FIG. 3A is a schematic side view of another operating condition of the air pressurizing mechanism of the present invention;

FIG. 3B is a schematic front view of the air pressurizing mechanism of the present invention in another operating state;

FIG. 4 is a schematic structural diagram of the gas circuit delay switch set of the present invention;

FIG. 5 is a schematic view of a cam controlling the opening and closing of one air path according to the present invention;

FIG. 6 is another schematic view of the cam controlling the opening and closing of one air path according to the present invention;

FIG. 7 is a schematic view of the cam controlling the opening and closing of the multiple air paths according to the present invention;

fig. 8 is a control timing diagram of the gas circuit delay switch group for controlling the opening and closing of the multiple gas circuits.

Labeled as: 1. a hand wheel; 2. a first speed change gear; 3. a gas circuit switch group gear; 4. a piston drive shaft gear; 5. a second speed change gear; 6. a gas circuit delay switch group; 7. a rocker arm; 8. an air pressurization compartment; 9. a piston drive shaft; 10. a first outside air check valve; 11. a second outside air check valve; 12. a first compressed air check valve; 13. a second compressed air check valve; 14. a compressed air buffer tank; 15. a first adsorption valve; 16. a second adsorption valve; 17. a first desorption valve; 18. a second desorption valve; 19. a first adsorption compartment; 20. a second adsorption compartment; 21. a pressure equalizing valve; 22. a first flush valve; 23. a second flush valve; 24. an oxygen buffer cabin; 25. a first exhaust valve; 26. an oxygen outlet; 27. a second exhaust valve; 28. a piston; 29. a roller; 30. a roller running cavity; 31. a main drive shaft; 32. the cam set drives the shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1, a portable oxygen generator comprises an air pressurizing mechanism, a compressedair buffer tank 14, afirst adsorption compartment 19, asecond adsorption compartment 20, anoxygen buffer compartment 24 and a gas path time delay switch group 6, wherein oxygen generation molecular sieves are arranged in both the two adsorption compartments.

The compressedair buffer tank 14 is connected with afirst adsorption cabin 19 through a first adsorption gas path, the first adsorption gas path is provided with afirst adsorption valve 15, thefirst adsorption cabin 19 is connected with a first desorption gas path, and the first desorption gas path is provided with afirst desorption valve 17; the compressedair buffer tank 14 is connected with asecond adsorption cabin 20 through a second adsorption gas path, the second adsorption gas path is provided with asecond adsorption valve 16, thesecond adsorption cabin 20 is connected with a second desorption gas path, and the second desorption gas path is provided with asecond desorption valve 18.

Thefirst adsorption cabin 19 is connected with theoxygen cache cabin 24 through a first flushing gas path and a first exhaust gas path, the first flushing gas path is provided with afirst flushing valve 22, and the first exhaust gas path is provided with afirst exhaust valve 25; thesecond adsorption cabin 20 is connected with theoxygen cache cabin 24 through a second flushing gas path and a second exhaust gas path, the second flushing gas path is provided with asecond flushing valve 23, and the second exhaust gas path is provided with asecond exhaust valve 27; the first flushing air path, the first exhaust air path, the second flushing air path and the second exhaust air path are communicated through a pressure equalizing air path, and the pressure equalizing air path is provided with apressure equalizing valve 21.

Theoxygen buffer compartment 24 is provided with anoxygen outlet 26 for supplying oxygen.

The gas path time-delay switch group 6 controls the corresponding adsorption gas path, flushing gas path, exhaust gas path and desorption gas path to be opened and closed respectively by controlling the gas path adjusting piece.

The air pressurization mechanism comprises anair pressurization cabin 8, a first outside air one-way valve 10 is arranged at the top of theair pressurization cabin 8, the top of theair pressurization cabin 8 is connected with a compressedair cache tank 14 through a first connecting pipe, and a first compressed air one-way valve 12 is arranged on the first connecting pipe; the bottom of theair pressurizing cabin 8 is provided with a second external air one-way valve 11, the bottom of theair pressurizing cabin 8 is connected with a compressedair cache tank 14 through a second connecting pipe, and the second connecting pipe is provided with a second compressed air one-way valve 13.

Thepiston 28 is arranged in theair pressurizing cabin 8, theroller running cavity 30 is arranged in thepiston 28, the longitudinal section of theroller running cavity 30 is oval, the long axis direction of the oval is perpendicular to the motion direction of thepiston 28, theroller 29 is arranged in theroller running cavity 30, theroller 29 is in contact with the inner wall of theroller running cavity 30, theroller 29 is fixedly connected with therocker arm 7, therocker arm 7 is connected with thepiston driving shaft 9, thepiston driving shaft 9 is connected with the power mechanism, and the reciprocating motion of thepiston 28 in theair pressurizing cabin 8 can be realized through the rotation of therocker arm 7. As shown in fig. 2A and 2B, thepiston 28 moves upward by therocker arm 7 to press air above thepiston 28 into the compressedair buffer tank 14, and as shown in fig. 3A and 3B, thepiston 28 moves by therocker arm 7 to press air below thepiston 28 into the compressedair buffer tank 14, and theroller 29 is always in contact with the inner wall of theroller travel chamber 30 during the reciprocation of thepiston 28.

As shown in fig. 4, the air path delay switch group 6 includes a camgroup driving shaft 32, the camgroup driving shaft 32 is connected to the power mechanism, the camgroup driving shaft 32 is provided with a plurality of rotating cams, each rotating cam includes a cam main body and a protruding portion arranged on the outer peripheral surface of the cam main body, each rotating cam is matched with at least one air path adjusting member, in the rotating process of the rotating cam, when the air path adjusting member is in butt contact with the protruding portion, the air path is closed, and when the air path adjusting member is dislocated with the protruding portion, the air path is opened. Specifically, the air path adjusting piece comprises a contact and a valve body, and the opening and the closing of the valve body are adjusted through the contact and different positions outside the cam in the rotating process of the cam. For a cam only provided with one protruding part, the cam is matched with one air channel adjusting part, and the time required by opening and closing of the air channel in one rotation period can be adjusted by controlling the proportion of the length of the protruding part to the corresponding perimeter, for example, as shown in fig. 5, the length of the protruding part is half of the corresponding perimeter, the air channel is closed within 50% of the time in one period and opened within 50% of the time, and if the cam rotates for one period for 10s, the air channel is sequentially controlled to be opened for 5s and closed for 5 s; alternatively, as shown in fig. 6, when the length of the protruding portion is 25% of the circumference, the protruding portion is closed 25% of the time and opened 75% of the time in one cycle, and when the protruding portion is rotated one cycle for 10s, the protruding portion is controlled to be opened for 7.5s, closed for 2.5s and opened for 4.5 s. In addition, as shown in fig. 7, a single rotary cam can be matched with a plurality of air circuit control parts, so that the opening and closing conditions of a plurality of air circuits are controlled through the single cam, and the cam type air circuit time-delay switch group can accurately control the time, pressure and flow of compressed air entering the oxygen generator, and is beneficial to ensuring the efficiency of the oxygen generator.

As shown in fig. 1, the power mechanism comprises a main driving shaft 31, the main driving shaft 31 is provided with a firstspeed change gear 2 and a secondspeed change gear 5, apiston driving shaft 9 is provided with a piston drivingshaft gear 4 engaged with the firstspeed change gear 2, a camgroup driving shaft 32 is provided with an air passageswitch group gear 3 engaged with the secondspeed change gear 5, the first speed-changinggear 2 is meshed with the piston drivingshaft gear 4 to drive thepiston driving shaft 9 to rotate, and then theroller 29 is driven to roll, the secondspeed change gear 5 is meshed with the air passageswitch group gear 3 to drive the camgroup driving shaft 32 to rotate, the main driving shaft 31 is connected with the hand wheel 1, in the absence of electric power, the hand wheel 1 is manually operated to drive the main driving shaft 31 to rotate, and the main driving shaft 31 can also be connected with a motor, wherein the motor is powered by a battery, and the battery is various portable batteries, such as a lithium battery, a hydrogen fuel battery and the like. The embodiment is only provided with one power mechanism, the occupied space is small, the power mechanism can be used for driving therocker arm 7 to rotate so as to drive the air pressurizing mechanism to work, the camgroup driving shaft 32 can also be driven to rotate so as to drive the air circuit delay switch group 6 to work, and the power mechanism can provide power through various modes such as the motor and the hand wheel 1 so as to prepare oxygen.

In a preferred embodiment of the present application, 9 rotating cams are disposed on the camgroup driving shaft 32, each rotating cam is matched with one air channel adjusting component, and the 9 valves perform air channel opening and closing control on thefirst adsorption valve 15, thesecond adsorption valve 16, thefirst desorption valve 17, thesecond desorption valve 18, thepressure equalizing valve 21, thefirst flushing valve 22, thesecond flushing valve 23, thefirst exhaust valve 25 and thesecond exhaust valve 27 respectively.

The portable oxygen generator of the embodiment separates air to prepare high-purity oxygen by utilizing the pressure swing adsorption principle, and the used oxygen generation molecular sieve is ultra-high-efficiency lithium type molecular sieve particles or a lithium type molecular sieve composite material fused with a special high polymer material. In this embodiment, thefirst adsorption compartment 19 is used as the unit a, thesecond adsorption compartment 20 is used as the unit B, the opening and closing of the multiple air paths are controlled by the air path delay switch group 6, and the process of controlling according to the time sequence is shown in fig. 8. The oxygen generator of the embodiment meets the portable requirement, has simple structure, only adopts a singleair pressurizing cabin 8 and asingle piston 28, and occupies small space; in the embodiment, a cam type gas path delay switch group 6 is adopted, a plurality of rotating cams are arranged on the same shaft, and multi-gas path combined time sequence switch control is realized, and in the using process, the gas path delay switch group 6 enables afirst adsorption cabin 19 and asecond adsorption cabin 20 to sequentially perform operations such as adsorption, flushing, pressure equalizing, exhausting, desorbing and the like, so that continuous oxygen generation is realized; the oxygen production efficiency of the oxygen generator of the embodiment is 1-100L per minute. The portable oxygen generator of the embodiment is used as follows:

s1, driving the main driving shaft 31 by using a hand wheel 1 or a motor as power to enable the power mechanism to rotate at a certain speed;

s2, the power mechanism drives thepiston driving shaft 9 to rotate therocker arm 7 fixed on thepiston driving shaft 9, and then therocker arm 7 rotates to drive thepiston 28 to reciprocate up and down in theair pressurizing cabin 8 to press air into the compressedair cache tank 14;

s3, simultaneously with S2, power unit drives camgroup drive shaft 32 and rotates, and then drives gas circuit time delay switch group 6 and begin work, and open respectively and be closed through controlling the gas circuit regulating part to control corresponding absorption gas circuit, washing gas circuit, exhaust gas circuit and desorption gas circuit, makefirst absorption cabin 19 adsorb according to the order withsecond absorption cabin 20, wash, the pressure-equalizing, exhaust, the desorption operation, use 10S as a cycle, concrete process is as follows:

when the time is 0-2.5s, thefirst adsorption valve 15 and thefirst exhaust valve 25 are opened, thesecond desorption valve 18 is also opened, other valves are in a closed state, the pressure in thefirst adsorption cabin 19 is increased, the adsorption operation is carried out, and the desorption operation is carried out in thesecond adsorption cabin 20;

at 2.5-4s, thefirst adsorption valve 15 and thefirst exhaust valve 25 are continuously opened, thesecond flushing valve 23 and thesecond desorption valve 18 are also opened, other valves are in a closed state, the adsorption operation is continuously carried out in thefirst adsorption cabin 19, and the desorption operation and the flushing operation are carried out in thesecond adsorption cabin 20;

in 4-5s, thepressure equalizing valve 21 is opened in the first 0.5s, the rest valves are in a closed state, and in the last 0.5s, thepressure equalizing valve 21 is closed, and thesecond exhaust valve 27 and thefirst desorption valve 17 are opened, so that the pressure equalizing operation is carried out, the pressure in thefirst adsorption cabin 19 is reduced, and the pressure in thesecond adsorption cabin 20 is increased;

when the pressure is 5-7.5s, thesecond adsorption valve 16 and thesecond exhaust valve 27 are opened, thefirst adsorption valve 15 is also opened, other valves are in a closed state, the pressure in thesecond adsorption cabin 20 is increased, the adsorption operation is carried out, and the desorption operation is carried out in thefirst adsorption cabin 19;

at 7.5-9s, thesecond adsorption valve 16 and thesecond exhaust valve 27 are continuously opened, thefirst flushing valve 22 and thefirst desorption valve 17 are also opened, other valves are in a closed state, the adsorption operation is continuously carried out in thesecond adsorption cabin 20, and the desorption operation and the flushing operation are carried out in thefirst adsorption cabin 19;

and in the 9-10s, thepressure equalizing valve 21 is opened in the first 0.5s, the other valves are in a closed state, and in the last 0.5s, thepressure equalizing valve 21 is closed, and thefirst exhaust valve 25 and thesecond desorption valve 18 are opened, so that the pressure equalizing operation is carried out, the pressure in thesecond adsorption cabin 20 is reduced, and the pressure in thefirst adsorption cabin 19 is increased.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (10)

Translated fromChinese

1.一种便携式制氧机，其特征在于，包括空气加压机构、压缩空气缓存罐(14)、第一吸附舱(19)、第二吸附舱(20)、氧气缓存舱(24)和气路延时开关组(6)；1. A portable oxygen generator, characterized in that it comprises an air pressurizing mechanism, a compressed air buffer tank (14), a first adsorption chamber (19), a second adsorption chamber (20), an oxygen buffer chamber (24) and an air Road delay switch group (6);空气加压机构通过管路与压缩空气缓存罐(14)连通，压缩空气缓存罐(14)通过吸附气路分别与第一吸附舱(19)、第二吸附舱(20)连通，两吸附舱内均设有制氧分子筛，两吸附舱分别通过冲洗气路与氧气缓存舱(24)连通，两吸附舱还分别通过排气气路与氧气缓存舱(24)连通，两吸附舱分别设有解吸气路，气路延时开关组(6)通过控制气路调节件来控制对应的吸附气路、冲洗气路、排气气路和解吸气路分别打开和闭合；The air pressurizing mechanism is communicated with the compressed air buffer tank (14) through pipelines, and the compressed air buffer tank (14) is respectively communicated with the first adsorption chamber (19) and the second adsorption chamber (20) through the adsorption air path. Oxygen-producing molecular sieves are provided inside, the two adsorption chambers are respectively connected with the oxygen buffer chamber (24) through the flushing gas path, and the two adsorption chambers are also connected with the oxygen buffer chamber (24) respectively through the exhaust gas path, and the two adsorption chambers are respectively provided with The desorption air circuit, the air circuit delay switch group (6) controls the corresponding adsorption air circuit, flushing air circuit, exhaust air circuit and desorption air circuit to open and close respectively by controlling the air circuit adjustment member;空气加压机构包括空气加压舱(8)和设于其内的活塞(28)，活塞(28)内设有滚轮运行腔(30)和滚轮(29)，滚轮(29)与滚轮运行腔(30)的内壁接触，滚轮(29)与摇臂(7)固定连接，通过摇臂(7)的转动能够实现活塞(28)在空气加压舱(8)内的往复运动，将空气压入压缩空气缓存罐(14)。The air pressurizing mechanism comprises an air pressurizing chamber (8) and a piston (28) arranged therein, the piston (28) is provided with a roller running cavity (30) and a roller (29), the roller (29) and the roller running chamber The inner wall of (30) is in contact, and the roller (29) is fixedly connected with the rocker arm (7). into the compressed air buffer tank (14).2.根据权利要求1所述的便携式制氧机，其特征在于，所述气路延时开关组(6)包括凸轮组驱动轴(32)和固定其上的若干旋转凸轮，凸轮组驱动轴(32)与动力机构相连，旋转凸轮包括凸轮主体以及至少一个设于凸轮主体外周面的凸起部，每个旋转凸轮与至少一个所述气路调节件相配合，在旋转凸轮旋转的过程中，当气路调节件与凸起部抵接接触时，气路关闭，当气路调节件与所述凸起部错位时，气路打开。2. The portable oxygen generator according to claim 1, characterized in that, the gas path delay switch group (6) comprises a cam group drive shaft (32) and several rotating cams fixed thereon, and the cam group drive shaft (32) Connected to the power mechanism, the rotating cam includes a cam main body and at least one raised portion arranged on the outer peripheral surface of the cam main body, each rotating cam is matched with at least one of the air passage adjustment parts, and during the rotation of the rotating cam , when the air passage adjusting member is in contact with the raised portion, the air passage is closed, and when the air passage adjusting member is misaligned with the raised portion, the air passage is opened.3.根据权利要求2所述的便携式制氧机，其特征在于，所述气路调节件包括触头和与之连接的阀体，在凸轮的旋转过程中，通过触头与凸轮外侧不同位置接触来调节阀体的开启与闭合。3 . The portable oxygen generator according to claim 2 , wherein the air path adjusting member comprises a contact and a valve body connected to it, and during the rotation of the cam, the contact is different from the outer side of the cam. 4 . Contact to adjust the opening and closing of the valve body.4.根据权利要求2所述的便携式制氧机，其特征在于，摇臂(7)与一活塞驱动轴(9)相连，活塞驱动轴(9)与动力机构传动相连。4. The portable oxygen generator according to claim 2, characterized in that, the rocker arm (7) is connected with a piston drive shaft (9), and the piston drive shaft (9) is connected with the power mechanism transmission.5.根据权利要求4所述的便携式制氧机，其特征在于，所述动力机构包括主驱动轴(31)和设于其上的第一变速齿轮(2)、第二变速齿轮(5)，活塞驱动轴(9)设有与第一变速齿轮啮合(2)的活塞驱动轴齿轮(4)，凸轮组驱动轴设有与第二变速齿轮(5)啮合的气路开关组齿轮(3)。5. The portable oxygen generator according to claim 4, wherein the power mechanism comprises a main drive shaft (31) and a first speed change gear (2) and a second speed change gear (5) provided thereon , the piston drive shaft (9) is provided with a piston drive shaft gear (4) that meshes with the first speed change gear (2), and the cam drive shaft is provided with an air circuit switch gear (3) that meshes with the second speed change gear (5). ).6.根据权利要求5所述的便携式制氧机，其特征在于，主驱动轴(31)与手轮(1)相连，在没有电力的情况下，通过手动操纵手轮带动所述主驱动轴转动。6. The portable oxygen generator according to claim 5, wherein the main drive shaft (31) is connected with the hand wheel (1), and in the absence of electricity, the main drive shaft is driven by manually operating the hand wheel turn.7.根据权利要求5所述的便携式制氧机，其特征在于，主驱动轴(31)与电机相连，所述电机采用电池供电。7. The portable oxygen generator according to claim 5, characterized in that the main drive shaft (31) is connected to a motor, and the motor is powered by a battery.8.根据权利要求1所述的便携式制氧机，其特征在于，滚轮运行腔(30)的纵向截面形状呈椭圆形或近似椭圆形，形状的曲面曲度决定了活塞(28)的运行速度；且形状的长轴方向与活塞(28)的运动方向垂直，形状的长轴的长度为摇臂(7)的直径；形状的短轴长度和摇臂(7)的直径共同决定活塞的行程。8. The portable oxygen generator according to claim 1, characterized in that the longitudinal cross-sectional shape of the roller running cavity (30) is elliptical or approximately elliptical, and the curved surface curvature of the shape determines the running speed of the piston (28). ; And the direction of the long axis of the shape is perpendicular to the direction of movement of the piston (28), the length of the long axis of the shape is the diameter of the rocker arm (7); the length of the short axis of the shape and the diameter of the rocker arm (7) jointly determine the stroke of the piston .9.根据权利要求1所述的便携式制氧机，其特征在于，空气加压舱(8)的顶部设有第一外界空气单向阀(10)，且空气加压舱(8)顶部通过第一连接管与压缩空气缓存罐(814)相连，第一连接管设有第一压缩空气单向阀(12)；空气加压舱(8)底部设有第二外界空气单向阀(11)，且空气加压舱(8)底部通过第二连接管与压缩空气缓存罐(14)相连，第二连接管设有第二压缩空气单向阀(13)。9. The portable oxygen generator according to claim 1, wherein the top of the air pressurized cabin (8) is provided with a first outside air one-way valve (10), and the top of the air pressurized cabin (8) passes through The first connecting pipe is connected with the compressed air buffer tank (814), and the first connecting pipe is provided with a first compressed air one-way valve (12); the bottom of the air pressurized cabin (8) is provided with a second external air one-way valve (11). ), and the bottom of the air pressurized cabin (8) is connected to the compressed air buffer tank (14) through a second connecting pipe, and the second connecting pipe is provided with a second compressed air check valve (13).10.根据权利要求1-9任一项所述的便携式制氧机的使用方法，其特征在于，包括如下步骤：10. the using method of the portable oxygen generator according to any one of claim 1-9, is characterized in that, comprises the steps:S1、采用手轮或电机为动力机构的动力，带动主驱动轴，使动力机构以一定的速度转动；S1. Use handwheel or motor as the power of the power mechanism to drive the main drive shaft, so that the power mechanism rotates at a certain speed;S2、动力机构通过齿轮带动活塞驱动轴，使固定在活塞驱动轴上的摇臂转动，通过摇臂的转动带动活塞在空气加压舱内上下往复运动，将空气压入压缩空气缓存罐；S2. The power mechanism drives the piston drive shaft through the gear, so that the rocker arm fixed on the piston drive shaft rotates, and the rotation of the rocker arm drives the piston to reciprocate up and down in the air pressurized chamber, and press the air into the compressed air buffer tank;S3、与S2同时，动力机构通过齿轮带动凸轮组驱动轴，使固定在凸轮组驱动轴上的旋转凸轮开始工作，并通过控制气路调节件来控制对应的吸附气路、冲洗气路、排气气路和解吸气路分别打开和闭合，使得第一吸附舱与第二吸附舱按顺序进行吸附、冲洗、均压、排气、解吸作业，实现连续制氧。S3. At the same time as S2, the power mechanism drives the cam group drive shaft through gears, so that the rotating cam fixed on the cam group drive shaft starts to work, and controls the corresponding adsorption air path, flushing air path, exhaust air path by controlling the air path adjustment part The gas path and the desorption gas path are opened and closed respectively, so that the first adsorption chamber and the second adsorption chamber can perform adsorption, flushing, pressure equalization, exhaust gas, and desorption operations in sequence to realize continuous oxygen production.

Images