CN113582138B

CN113582138B - Molecular sieve device and oxygenerator

Info

Publication number: CN113582138B
Application number: CN202110962035.3A
Authority: CN
Inventors: 王浩; 宋振伟; 于尊; 张炜昊
Original assignee: Shanghai Haier Medical Technology Co ltd; Haier Smart Home Co Ltd
Current assignee: Shanghai Haier Medical Technology Co ltd; Haier Smart Home Co Ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2024-06-21
Anticipated expiration: 2041-08-20
Also published as: CN113582138A

Abstract

The invention discloses a molecular sieve device and an oxygenerator, wherein the molecular sieve device comprises a molecular sieve unit, an air inlet unit and an air outlet unit, a containing cavity for containing a molecular sieve is formed in the molecular sieve unit, the air inlet unit is arranged at a first end of the molecular sieve unit, air inlet air flow is conveyed into the containing cavity, the air outlet unit is arranged at a second end of the molecular sieve unit, air in the containing cavity flows to an air outlet of the air outlet unit through a plurality of air outlet channels, the air inlet of the air outlet channels is arranged at a plurality of position points of the containing cavity, the air outlet channels are of a Tesla valve structure, and the air flow is accelerated through the air outlet channels. According to the invention, the Tesla valve structure is utilized to accelerate gas at the gas outlet, so that the gas exhaust speed is improved, the oxygen production switching efficiency is improved, the reverse flow of the external unpurified air into the molecular sieve cavity is avoided, and the service efficiency and the service life of the molecular sieve are improved.

Description

Molecular sieve device and oxygenerator

Technical Field

The invention relates to the technical field of oxygenerators, in particular to a molecular sieve device and an oxygenerator.

Background

The oxygenerator realizes the adsorption of gases such as nitrogen and the like through a molecular sieve, and realizes the oxygen generation purpose. The existing molecular sieve structure adopts a unidirectional air inlet, high-pressure air impacts the molecular sieve at the position of the air inlet for a long time, so that the molecular sieve at the position is accelerated to be pulverized, the pulverized powder can further pollute other molecular sieves, the adhesive force of the molecular sieve at the other positions to the air is reduced, the utilization efficiency of the molecular sieve is reduced, and the economical efficiency is poor. Each oxygenerator needs to design molecular sieves with different sizes according to different flow rates and oxygen concentrations, so that the molecular sieves have no universality and are not beneficial to standardized and automatic production. And the subsequent maintenance cost of processing, manufacturing, production and equipment is increased.

In order to ensure the concentration and the large flow of oxygen, the oxygen generator meets the requirement of consumers on oxygen, and needs to use high-power air compression equipment so as to effectively supply large-flow compressed air in a short time, and the size of a corresponding molecular sieve cylinder is correspondingly increased to realize the efficient purification of oxygen in unit time. The power of the compressor is improved, so that not only is the power consumption of the equipment improved, but also the noise of the equipment is improved, and the use feeling of a user is directly influenced. In addition, the volume of the compressor is increased, the volume of the molecular sieve cylinder is increased, the volume and the weight of the equipment are inevitably increased, and the portability of the equipment is directly affected.

Molecular sieves in oxygenerators have different structural sizes, molecular sieve filling equipment has huge difference, and the filling quality is uneven in level, so that high-efficiency standardized production is difficult to realize. According to the different service environment, the molecular sieve is in the change in-process, screen cylinder dismouting difficulty, after-sales level are uneven, and the difficult automation equipment filling that adopts leads to the molecular sieve module quality unable assurance. On one hand, the pulverized molecular sieve cannot be effectively recovered to cause the aggravation of environmental pollution, and on the other hand, the density and the content of the molecular sieve after filling are possibly about 5 percent different, so that the oxygen production capacity of subsequent equipment is reduced, and the use effect is affected.

After the oxygen preparation is complete and the molecular sieve adsorption gas reaches saturation, the molecular sieve cavity is communicated with the atmosphere so as to remove the high-pressure nitrogen and other gases in the molecular sieve cavity and prepare for the next oxygen preparation. In the exhaust process, the condition that the air which is not purified outside can flow back into the inner cavity of the molecular sieve can be caused, so that the cleanness of the inner cavity of the molecular sieve is reduced, and the purity of the oxygen production next time is influenced. Meanwhile, the exhaust process is slow, and the oxygen production switching efficiency is low.

The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

Aiming at the problems pointed out in the background art, the invention provides a molecular sieve device and an oxygenerator, which utilize a Tesla valve structure to accelerate gas at a gas outlet, improve the exhaust speed, improve the oxygen-making switching efficiency, prevent the outside unpurified air from flowing into a molecular sieve cavity in a countercurrent manner, and improve the service efficiency and service life of the molecular sieve.

In order to achieve the aim of the invention, the invention is realized by adopting the following technical scheme:

the present invention provides a molecular sieve device comprising:

A molecular sieve unit having a receiving chamber formed therein for receiving a molecular sieve;

an air inlet unit which is arranged at the first end of the molecular sieve unit and is used for conveying air inlet flow into the accommodating cavity;

The gas outlet unit is arranged at the second end of the molecular sieve unit, gas in the accommodating cavity flows to the gas outlet of the gas outlet unit through a plurality of gas outlet channels, gas inlets of the gas outlet channels are arranged at a plurality of position points of the accommodating cavity, the gas outlet channels are of Tesla valve structures, and the gas flow is accelerated through the gas outlet channels.

In some embodiments of the present application, a plurality of air vents are provided at the bottom of the accommodating cavity, a plurality of air outlet channels are provided on the end surface of the molecular sieve unit facing the air outlet unit, the air vents are correspondingly communicated with one ends of the air outlet channels, and the other ends of the air outlet channels are collected in the air collecting tank;

The gas outlet unit is clung to the second end of the molecular sieve unit, the gas outlet channel and the side surface of the gas outlet unit form the gas outlet channel, and the gas outlet of the gas outlet unit is directly communicated with the gas collecting groove.

In some embodiments of the present application, the plurality of air outlet channels are radially arranged with the air collecting groove as a center.

In some embodiments of the present application, a groove is provided on an end surface of the molecular sieve unit facing the air outlet unit, the air outlet flow channel and the air collecting groove are both provided in the groove, and the air outlet unit is tightly attached to the groove.

In some embodiments of the present application, a plurality of gas flow channels with tesla valve structures are arranged in the peripheral wall surrounding the accommodating cavity, and the gas flowing out of the gas inlet unit enters the accommodating cavity through the gas flow channels;

the airflow flowing through the airflow channel is accelerated, and the airflow flowing out of the airflow channel enters the accommodating cavity through a plurality of position points.

In some embodiments of the application, the air flow from the air flow channel enters the accommodating cavity along Zhou Xiangqie of the accommodating cavity.

In some embodiments of the present application, the plurality of air flow channels includes a plurality of first air flow channels and a plurality of second air flow channels, the air outlets of the first air flow channels are located at the lower portion of the accommodating cavity, and the air outlets of the second air flow channels are located at the upper portion of the accommodating cavity.

In some embodiments of the present application, the air outlet of the air inlet unit is directly communicated with the air inlet of the first air flow channel, and the air flow in the first air flow channel flows from the first end to the second end of the molecular sieve unit;

an air guide channel is arranged in the peripheral wall of the accommodating cavity along the length direction of the accommodating cavity, the air guide channel guides the air flow at the air outlet of the air inlet unit to the air inlet of the second air flow channel, and the air flow in the second air flow channel flows from the second end to the first end of the molecular sieve unit.

In some embodiments of the present application, the molecular sieve unit includes an outer cylinder portion and an inner cylinder portion, the inner cylinder portion being disposed within the outer cylinder portion, the inner cylinder portion forming the accommodation chamber;

The inner wall of the outer cylinder part is provided with a plurality of first inner flow passages and a plurality of second inner flow passages, the outer wall of the inner cylinder part is provided with a plurality of first outer flow passages and a plurality of second outer flow passages, the first inner flow passages and the first outer flow passages are in one-to-one correspondence to form the first air flow passages, and the second inner flow passages and the second outer flow passages are in one-to-one correspondence to form the second air flow passages;

The air outlet channel is arranged on the end face of the outer barrel part, and the air outlet unit is connected with the outer barrel part.

The invention also provides an oxygenerator, which comprises the molecular sieve device.

Compared with the prior art, the invention has the advantages and positive effects that:

In the molecular sieve device disclosed by the application, gas in the accommodating cavity flows to the gas outlet of the gas outlet unit through a plurality of gas outlet channels, the gas inlets of the gas outlet channels are arranged at a plurality of position points of the accommodating cavity, the gas outlet channels are of a Tesla valve structure, and the gas flow is accelerated through the gas outlet channels. Oxygen prepared in the accommodating cavity can flow out through the air outlets at a plurality of position points in an accelerating way through the air outlet channel, so that the air discharging speed is improved.

After the oxygen preparation is complete, molecular sieve adsorption gas reaches saturation, hold the chamber and switch on with atmospheric air in order to discharge gaseous such as nitrogen gas, utilize the gas outlet of a plurality of position points department and the unidirectional passage characteristic of tesla valve, can make hold gaseous such as intracavity nitrogen gas and discharge fast, can effectively prevent external unpurified air to get into the molecular sieve intracavity simultaneously, improve molecular sieve's availability factor and life-span, improve oxygen production switching efficiency.

Other features and advantages of the present invention will become apparent upon review of the detailed description of the invention in conjunction with the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic structural view of a molecular sieve device according to an embodiment;

FIG. 2 is an exploded view of a molecular sieve device according to an embodiment;

FIG. 3 is a schematic view of the structure of FIG. 2, as viewed from Q1;

fig. 4 is a schematic structural view of an intake air dispersing section according to an embodiment;

FIG. 5 is a cross-sectional view of an intake dispersion portion according to an embodiment;

fig. 6 is a schematic structural view of a flange portion according to an embodiment;

FIG. 7 is a schematic view of the structure of FIG. 6, as viewed from Q2;

FIG. 8 is a schematic structural view of an outer barrel portion according to an embodiment;

FIG. 9 is a schematic view of the structure of FIG. 8, as viewed from Q3;

FIG. 10 is a cross-sectional view of an outer barrel portion according to an embodiment;

Fig. 11 is a schematic structural view of an inner cylindrical portion according to an embodiment;

FIG. 12 is a schematic view of the structure of FIG. 11, as viewed from Q4;

FIG. 13 is a cross-sectional view of a molecular sieve unit according to an embodiment;

FIG. 14 is a schematic view of a forward intake of a Tesla valve structure according to an embodiment;

Fig. 15 is a reverse intake schematic of a tesla valve structure according to an embodiment.

Reference numerals:

A 100-molecular sieve unit;

110-an outer cylinder part, 111-a first inner runner, 112-a second inner runner, 113-an inner plane, 114-a slot, 1151-a second annular runner, 1152-a third annular runner, 1161-a first lower runner, 1162-a second upper runner, 1171-a second seal groove, 1172-a third seal groove, 1181-an air inlet of an air guide channel, 1182-an air outlet of the air guide channel;

120-inner cylinder part, 121-first outer runner, 122-second outer runner, 123-outer plane, 124-cutting, 125-inner cylinder body, 126-chassis, 1261-fourth annular runner, 1262-fourth seal groove, 1263-second lower runner, 127-second air vent, 128-air outlet runner, 129-air collecting tank;

130-an air outlet of the first air flow channel;

140-an air outlet of the second air flow channel;

150-a receiving cavity;

160-extending channel segments;

170-a particle size monitoring module;

200-an air inlet unit;

210-an air inlet dispersing part, 211-an air inlet nozzle, 212-a wireless monitoring module, 213-an air inlet channel, 214-an air dispersing groove and 215-a first annular air collecting channel;

220-flange part, 221-first vent, 222-first annular runner, 223-first upper runner, 224-first seal groove;

300-gas outlet unit, 310-gas outlet unit;

A first end of the a-molecular sieve unit;

a second end of the B-molecular sieve unit.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The present embodiment discloses a molecular sieve device, referring to fig. 1 to 3, which mainly includes a molecular sieve unit 100, an air inlet unit 200, and an air outlet unit 300.

The air inlet unit 200 is disposed at a first end a of the molecular sieve unit 100, and the air outlet unit 300 is disposed at a second end B of the molecular sieve unit 100.

The molecular sieve device is integrally in a cylindrical structure, and has a compact structure and a small volume.

The molecular sieve device is not only suitable for oxygen production equipment, but also suitable for other gas separation and enrichment equipment. This embodiment is exemplified as being applied to an oxygen production facility.

The gas inlet unit 200 provides a flow of inlet gas to the molecular sieve unit 100, and the gas in the molecular sieve unit 100 flows out through the gas outlet unit 300.

A receiving chamber 150 for receiving the molecular sieve is formed in the molecular sieve unit 100, in which the molecular sieve is placed.

Air flows into the accommodating cavity 150 through the air inlet unit 200, and when the air flows through the molecular sieve, gases such as nitrogen are adsorbed by the molecular sieve, and the prepared oxygen flows out through the air outlet unit 300.

The molecular sieve unit 100, the air inlet unit 200 and the air outlet unit 300 are respectively subjected to structural optimization so as to improve the performance of the oxygenerator from the dimensions of oxygen preparation efficiency, molecular sieve service efficiency, service life and the like.

The main channels for gas circulation in the molecular sieve device all adopt Tesla valve structures.

Fig. 14 is a schematic diagram of the forward flow of gas in a tesla valve structure, and fig. 15 is a schematic diagram of the reverse flow of gas in a tesla valve structure.

Referring to fig. 14, under the same intake pressure, a tesla valve flow channel structure is adopted, in the process that gas passes through a tesla valve in the forward direction, the gas is compressed after being expanded in the valve, the pressure difference is changed, so that the gas speed is increased, a higher gas flow rate can be provided, when the gas reaches a cavity where the molecular sieve is located, the pressure is increased due to the increase of the gas flow rate, and the pressure in the cavity can be effectively increased, thereby improving the adsorption efficiency of the molecular sieve on the gas such as nitrogen.

Referring to fig. 15, as the gas passes in reverse through the tesla valve flow path, the gas flow is split into two streams per minute by one minute point, wherein the gas flow entering the loop impinges in reverse against the straight stream, thereby reducing the gas flow rate. When the gas passes through the plurality of sub-nodes, the flow speed of the gas flow is reduced, and the effect of choked flow is realized. The reverse flow resistance is about 200 times of the forward flow, and the effective unidirectional acceleration flow of the fluid in the Tesla valve flow passage is finally realized. Therefore, turbulent flow and backflow of gas in a gas channel can be effectively avoided, and energy loss of compressed air is reduced to the greatest extent.

[ Molecular Screen Unit ]

In some embodiments of the present application, a plurality of airflow channels are provided on the peripheral wall surrounding the accommodating cavity 150, and the airflow channels are in a tesla valve structure, so that the airflow is accelerated through the airflow channels.

The gas supplied from the gas inlet unit 200 flows through the gas flow path, accelerates and then flows into the receiving chamber 150.

The accelerated air flow flowing out of the air flow channel enters the accommodating cavity 150 through a plurality of position points, so that the contact point and the contact area of the compressed air and the molecular sieve are increased, the contact area of the compressed air and the molecular sieve in unit time is increased, and the adsorption efficiency of the molecular sieve is improved.

By utilizing the specific flow direction characteristics of the airflow channel of the Tesla valve structure and the unique inhibition effect of the Tesla valve on countercurrent gas, the turbulent impact on the position of the air outlet of the airflow channel is effectively reduced, the impact of the gas on molecular sieve particles is reduced, the powder formation is less, and the molecular sieve pulverization and the molecular sieve pollution in a cavity caused by the impact are effectively inhibited.

In some embodiments of the present application, referring to fig. 13, the air flow flowing out of the air flow channel enters the accommodating cavity 150 along Zhou Xiangqie of the accommodating cavity 150, so as to further increase the contact area between the compressed air and the molecular sieve, and further reduce the impact of the air flow on the molecular sieve.

The air outlet of the air flow channel is communicated with the accommodating cavity 150 through the extending channel section 160, and by obliquely arranging the extending channel section 160, the air flowing out of the extending channel section 160 can enter the accommodating cavity 150 tangentially.

In some embodiments of the present application, referring to fig. 8 to 11, the plurality of air flow passages includes a plurality of first air flow passages having air outlets 130 at a lower portion of the receiving chamber 150 and a plurality of second air flow passages having air outlets 140 at an upper portion of the receiving chamber 150.

The upper and lower parts of the accommodating chamber 150 are provided with gas inflow points to be in point contact with a plurality of positions of the molecular sieve, so that the contact area between the gas and the molecular sieve is further increased, and the adsorption efficiency of the molecular sieve is improved.

In order to realize the height difference between the positions of the air outlets of the first air flow channel and the second air flow channel, a certain distance is needed to enable the air to flow in the first air flow channel and the second air flow channel to realize acceleration, and the air outlet position of the air inlet unit 200 is located at one side of the molecular sieve unit 100.

Specifically, the air outlet of the air inlet unit 200 is directly connected to the air inlet of the first air flow channel, and the air flow in the first air flow channel flows from the first end a to the second end B of the molecular sieve unit 100, and then flows into the accommodating chamber 150.

Meanwhile, an air guide channel is provided along the length direction in the peripheral wall surrounding the accommodating cavity 150, the air guide channel guides the air flow from the air outlet of the air inlet unit 100 to the air inlet of the second air flow channel, and the air flow in the second air flow channel flows from the second end B of the molecular sieve unit 100 to the first end a and then flows into the accommodating cavity 150.

The first and second air flow passages extend obliquely along the length direction of the peripheral wall surrounding the accommodation chamber 150, and extend the air flow accelerating path, thereby improving the accelerating effect.

In some embodiments of the present application, a plurality of first airflow channels and a plurality of second airflow channels are alternately arranged, and after the air outlets of the first airflow channels and the air outlets of the second airflow channels are projected to the same plane, the projection positions of the air outlets are spaced apart, so that the contact area of the gas and the molecular sieve is further improved, and the adsorption efficiency is improved.

For how the gas flow channel is specifically formed in the molecular sieve unit 100, in some embodiments of the present application, the molecular sieve unit 100 includes an outer cylinder 110 and an inner cylinder 120, the inner cylinder 120 is disposed in the outer cylinder 100, and the inner cylinder 120 forms a receiving cavity 150 from the viewpoints of convenience in processing, assembly, and cooperation with the gas inlet unit and the gas outlet unit.

Referring to fig. 8 to 10, a plurality of inner flow channels are provided on the inner wall of the outer cylinder 110, and referring to fig. 11, a plurality of outer flow channels are provided on the outer wall of the inner cylinder 120, and both the inner flow channels and the outer flow channels form a half-surface structure of a tesla valve structure, and when the outer cylinder 110 is sleeved with the inner cylinder 120, the plurality of inner flow channels and the plurality of outer flow channels are in one-to-one correspondence to form a plurality of air flow channels.

In some embodiments of the present application, the inner flow path includes a first inner flow path 111 and a second inner flow path 112, the outer flow path includes a first outer flow path 121 and a second outer flow path 122, the first inner flow path 111 is abutted with the first outer flow path 121 to form a first flow path, the second inner flow path 112 is abutted with the second outer flow path 122 to form a second flow path, and the air flow direction in the first flow path is opposite to the air flow direction in the second flow path.

The air guide passage is provided in the wall of the outer cylinder 110, and guides the air flow sent from the air inlet unit 100 to the air inlet of the second air flow passage.

In some embodiments of the present application, the inner wall of the outer barrel 110 is surrounded by a plurality of inner planes 113 extending along the length direction thereof, and the inner planes 133 are provided with a first inner flow channel 111 and a second inner flow channel 112.

The outer wall of the inner cylinder 120 is surrounded by a plurality of outer planes 123 extending in the longitudinal direction thereof, and the outer planes 123 are provided with a first outer flow passage 121 and a second outer flow passage 122.

When the outer cylindrical portion 110 and the inner cylindrical portion 120 are sleeved, the inner planes 113 and the outer planes 123 are attached in a one-to-one correspondence, so that the one-to-one correspondence between the inner flow channels and the outer flow channels is ensured.

In the illustration of this embodiment, three first air flow channels and three second air flow channels are respectively provided, and the corresponding inner plane 113 and outer plane 123 respectively have six inner flow channels 111, two inner flow channels 112 are provided on the three inner planes 113, two inner flow channels 121 are provided on the three outer planes 123, and two outer flow channels 122 are provided on the other three outer planes 123.

After the outer cylinder 110 is sleeved with the inner cylinder 120, sealing gaps are reserved on the Tesla valve circumference, and sealing glue is injected after assembly to realize airtight and watertight.

In some embodiments of the present application, a fool-proof structure may be disposed between the inner plane 113 and the outer plane 123, so as to facilitate the correct assembly between the outer barrel 110 and the inner barrel 120, and make the corresponding inner plane 113 face the outer plane 123.

Specifically, the inner wall of the outer cylinder 110 is provided with slots 114 along the length direction thereof, the slots 114 are located at the corners of the two adjacent inner planes 113, correspondingly, the outer wall of the inner cylinder 120 is provided with cutting 124 along the length direction thereof, the cutting 124 is located at the corners of the two adjacent outer planes 123, and the slots 114 and the cutting 124 are respectively provided with two corresponding insertion holes, so that the foolproof assembly purpose is realized.

[ Air intake Unit ]

In some embodiments of the present application, referring to fig. 4 and 5, a plurality of air inlet channels 213 are provided in the air inlet unit 100, the air inlet channels 213 are also in a tesla valve structure, after air enters the air inlet unit 200, the air is accelerated through the air inlet channels 213, and the accelerated air enters the accommodating cavity 150 through a plurality of position points.

The accelerated air flow flowing out of the air inlet channel 213 enters the accommodating cavity 150 through a plurality of position points, so that the contact point and the contact area between the compressed air and the molecular sieve are increased, the contact area between the compressed air and the molecular sieve in unit time is increased, and the adsorption efficiency of the molecular sieve is improved.

By utilizing the specific flow direction characteristics of the air inlet channel of the Tesla valve structure and the unique inhibition effect of the Tesla valve on countercurrent gas, turbulent impact at the air outlet position of the air inlet channel is effectively reduced, impact of gas on molecular sieve particles is reduced, powder formation is less, and molecular sieve pulverization and intra-cavity molecular sieve pollution caused by impact are effectively inhibited.

In some embodiments, the gas accelerated through the plurality of gas inlet channels 213 may flow directly into the receiving chamber 150.

In this embodiment, the gas accelerated by the plurality of gas inlet channels 213 will first pass through the gas flow channels to obtain a secondary acceleration, and then flow into the accommodating chamber 150, and the secondary acceleration is performed to obtain a higher gas flow rate and pressure.

In some embodiments of the present application, referring to fig. 4 and 5, the air inlet unit 200 is provided with an air inlet nozzle 211, the air inlet nozzle 211 is communicated with the air compressor through a pipeline, the air inlet channel 213 is communicated with the air inlet nozzle 211, and the plurality of air inlet channels 213 are radially arranged around the air inlet nozzle 211.

The air inlet ends of the air inlet channels 213 are converged in the air dispersing groove 214, the air inlet nozzle 211 is opposite to the air dispersing groove 214, and air entering from the air inlet nozzle 211 directly impacts the air dispersing groove 214 and flows to the air flow channels through the air inlet channels 213, so that uniform flow distribution is realized.

In this embodiment, six air flow channels are corresponding to the six air flow channels, and six air inlet channels 213 are also provided, and the six air inlet channels 213 are arranged with the air dispersing grooves 214 as the center at an included angle of 60 °.

In some embodiments of the present application, a wireless monitoring module 212 is disposed at the air inlet nozzle 211 to monitor the oxygen content, the water vapor content and the air flow rate of the inlet air in real time, and feed back the monitoring data to the main control unit for the equipment to identify the external oxygen concentration and the water vapor content, thereby controlling the actual output power of the air compressor.

If the monitoring data meets the oxygen production requirement, the compressed air continues to accelerate for the first time through the air inlet channel 213, and the speed of the compressed air is increased.

For the specific arrangement of the air intake unit 200, in some embodiments of the present application, referring to fig. 2 and 3, the air intake unit 200 includes an air intake dispersing unit 210 and a flange 220, the air intake dispersing unit 210 is connected with the flange 220 in a sealing manner, the flange 220 is connected with the molecular sieve unit 100 in a sealing manner, and the air intake dispersing unit 210 is provided with air intake nozzles 211 and air intake channels 213.

Referring to fig. 5, the air inlet dispersion part 213 has a disk-shaped structure, a first annular air collecting channel 215 is provided near the outer edge, and the air outlets of the plurality of air inlet channels 213 communicate with the first annular air collecting channel 215.

Referring to fig. 6, a groove is provided on a side of the flange portion 220 facing the air intake dispersion portion 210, the air intake dispersion portion 210 is adhesively fixed into the groove by an elastic sealant, and an outer surface of the air intake dispersion portion 210 is flush with an outer surface of the flange portion 220.

The groove is provided with a vent (referred to as a first vent 221), and referring to fig. 7, a side of the flange portion 220 facing away from the air intake dispersion portion 210 is provided with a first annular flow channel 222, and an end surface of the molecular sieve unit 100 (specifically, an end surface of the outer cylinder portion 110) is provided with a second annular flow channel 1151.

After the flange portion 220 is assembled to the outer cylinder portion 110, the first annular flow channel 222 and the second annular flow channel 1151 are butted to form a second annular gas collecting channel, the first annular gas collecting channel 215 is communicated with the second annular gas collecting channel through the first air vent 221, and air inlets of the plurality of air flow channels are communicated with the second annular gas collecting channel.

The gas accelerated by the plurality of gas inlet channels 213 flows into the second annular gas collecting channel through the first air vent 221, and then flows into the gas flow channel for secondary acceleration.

Six air inlet channels 213 are corresponding, the first air vents 221 are also arranged, the air outlets of the air inlet channels 213 are opposite to the first air vents 221, gas resistance is reduced, the first annular gas collecting channel 215 has the functions of collecting and buffering the gas flowing out of the air inlet channels 213, and the gas which does not flow into the second annular gas collecting channel through the first air vents 221 in time can be buffered into the first annular gas collecting channel 215.

The gas is guided from one side of the flange portion 220 to the second annular gas collecting channel at the other side through the plurality of first air vents 221, and the gas is collected and redistributed.

The first vent 221 is provided with a hydrophobic and breathable membrane (not shown), so that water vapor filtration is realized, IPX7 is waterproof, and the service life of the molecular sieve can be prolonged by oxygen, nitrogen and other gases.

The flange portion 220 is fixedly coupled to the outer cylinder portion 110 by screws.

In order to improve the tightness between the flange portion 220 and the outer cylinder portion 110, in some embodiments of the present application, referring to fig. 7, a first seal groove 224 is provided on the flange portion 220, and referring to fig. 10, a second seal groove 1171 is provided on the end surface of the outer cylinder portion 110, and a silica gel seal ring is filled in a seal cavity formed by the first seal groove 224 and the second seal groove 1171, so as to achieve watertight and airtight requirements.

In some embodiments of the present application, referring to fig. 8, the inlet port of the first air flow channel communicates with the second annular gas collecting channel through a flow passage.

The air inlet 1181 of the air guide channel is communicated with the second annular air collection channel so as to realize air diversion and reversing.

For the communication structure between the second annular gas collecting channel and the first gas flow channel, in some embodiments of the present application, referring to fig. 7, a first upper flow channel 223 is disposed on an end surface of the flange portion 220 facing the outer barrel portion 110, referring to fig. 8, a first lower flow channel 1161 is disposed on an end surface of the outer barrel portion 110 facing the flange portion 220, and the first upper flow channel 223 and the first lower flow channel 1161 are in butt joint to form a gas flow channel for communicating the second annular gas inlet channel with the first gas flow channel, so as to realize gas flow conduction.

In some embodiments of the present application, referring to fig. 11, the inner cylinder 120 includes a chassis 126 and an inner cylinder body 125 that are integrally formed, and the first outer flow channel 121 and the second outer flow channel 122 are disposed on an outer wall of the inner cylinder body 125.

Referring to fig. 9, the end surface of the outer cylindrical portion 110 facing the bottom plate 126 is provided with a third annular flow channel 1152 and a second upper flow channel 1162, and referring to fig. 11, the bottom plate 126 is provided with a fourth annular flow channel 1261 and a second lower flow channel 1263.

The third annular flow channel 1152 and the fourth annular flow channel 1261 are in butt joint to form a third annular gas collecting channel, and an air outlet 1182 of the air guide channel is communicated with the third annular gas collecting channel.

The second upper runner 1162 and the second lower runner 1263 are in butt joint to form an air flow channel for enabling the third annular air collecting channel to flow with the second air flow channel, so that air flow conduction is achieved.

The third annular gas collecting channel has the functions of collecting and buffering the gas flowing in from the plurality of gas guide channels, and the gas which cannot flow into the second gas flow channel in time can be buffered into the third annular gas collecting channel.

[ Gas outlet Unit ]

Referring to fig. 11 and 12, the gas in the accommodating chamber 150 flows to the gas outlet 310 of the gas outlet unit through a plurality of gas outlet channels, the gas inlets of which are arranged at a plurality of position points of the accommodating chamber 150, the gas outlet channels are of a tesla valve structure, and the gas flow is accelerated through the gas outlet channels.

The oxygen prepared in the accommodating chamber 150 can flow out through the gas outlet at a plurality of position points in an accelerating way through the gas outlet channel, so that the gas discharging speed is improved.

After the oxygen preparation is complete and the molecular sieve adsorption gas reaches saturation, the accommodating cavity 150 is communicated with the atmosphere to discharge nitrogen and other gases, and the nitrogen and other gases in the accommodating cavity can be rapidly discharged by utilizing the air outlets at a plurality of position points and the unidirectional passing characteristic of the Tesla valve, so that the outside unpurified air can be effectively prevented from reversely flowing into the molecular sieve cavity, the service efficiency and the service life of the molecular sieve are improved, and the oxygen production switching efficiency is improved.

In some embodiments of the present application, referring to fig. 11, a plurality of air vents (denoted as second air vents 127) are provided at the bottom of the accommodating cavity 150, referring to fig. 12, a plurality of air outlet channels 128 are provided on the end surface of the molecular sieve unit 100 (specifically, the bottom plate 126) facing the air outlet unit 300, the plurality of second air vents 127 are correspondingly communicated with one ends of the plurality of air outlet channels 128, and the other ends of the plurality of air outlet channels 128 are collected in the air collecting groove 129.

The air outlet unit 300 is closely attached to the second end of the molecular sieve unit 100, the air outlet channel 128 and the side surface of the air outlet unit 300 form an air outlet channel, and the air outlet 310 of the air outlet unit is directly communicated with the air collecting groove 129.

The gas in the accommodating chamber 150 enters the gas outlet channel through the plurality of second air inlets 127 to be accelerated, then is collected in the gas collecting groove 129, and then flows out through the gas outlet 310 of the gas outlet unit.

In some embodiments of the present application, the plurality of air outlet channels 128 are radially arranged around the air collecting groove 129, so as to prolong the flow path of the air outlet flow in the air outlet channels 128 and improve the acceleration effect.

In some embodiments of the present application, the end surface of the molecular sieve unit 100 facing the air outlet unit 300 is provided with a groove, specifically, the bottom plate 126 is provided with a groove, the air outlet unit 300 has a disc-shaped structure, the air outlet unit 300 is tightly disposed in the groove, the outer surface of the air outlet unit 300 is flush with the outer surface of the bottom plate 126, and the air outlet flow channel 128 and the air collecting channel 129 are both disposed in the groove.

In some embodiments of the present application, a particle size monitoring module 170 is disposed at the gas collection tank 129 to monitor the prepared oxygen for particles and determine the internal molecular sieve health status data.

If the monitoring is qualified, the prepared oxygen is sent into an oxygen outlet cylinder for storage through an air outlet 310 of an air outlet unit, and finally the high-efficiency preparation of the high-concentration oxygen is realized.

In some embodiments of the present application, an oxygen concentration monitoring module and a buzzer are built in the air outlet unit 300, so as to monitor the oxygen concentration and remind the replacement of the molecular sieve respectively.

In some embodiments of the application, the chassis 126 is fixedly coupled to the outer barrel 110 by bolts.

In order to improve the tightness between the chassis 126 and the outer cylinder 110, in some embodiments of the present application, referring to fig. 9, a third sealing groove 1172 is provided on the outer cylinder 110, referring to fig. 11, a fourth sealing groove 1262 is correspondingly provided on the chassis 126, and a sealing cavity formed by the third sealing groove 1172 and the fourth sealing groove 1262 is filled with a silica gel sealing ring, so as to achieve watertight and airtight requirements.

The air outlet unit 300 is externally and movably connected quickly and is used for being connected with an air outlet valve of oxygen generating equipment.

The molecular sieve device realizes series-parallel connection of molecular sieves through a modularized and standardized design concept, and is used for coping with equipment with different gas flow requirements.

Meanwhile, the Tesla valve is introduced to optimize the design of the gas flow channel, and the gas flowing in the gas inlet, the gas outlet and the molecular sieve is accelerated respectively, so that three-stage acceleration can be realized, the unidirectional high-efficiency flow of the gas is realized, the reverse flow of other gases such as water vapor is prevented, and the adsorption efficiency of the molecular sieve on the gas is reduced.

Meanwhile, through the air flow channel adopting the Tesla valve structure, the speed loss of gas when passing through the electronic valve body, the air inlet, the air outlet and the molecular sieve is effectively compensated, and the problem of energy consumption increase caused by backflow of compressed gas in a pipe in the traditional structure is avoided. Under the working condition of the compressor with the same power, the molecular sieve module adopting the Tesla valve can obviously improve the preparation efficiency of oxygen. Meanwhile, the Tesla valve at the air outlet can effectively avoid the backflow of outside air and accelerate oxygen to enter the oxygen storage tank quickly.

The distributed air inlet structure in the molecular sieve cavity effectively ensures that the utilization rate of the molecular sieve is more balanced and more uniform when the contact area of the molecular sieve and air in unit time is improved, the effective utilization rate of the molecular sieve can be greatly improved by gas impact, the situation that the molecular sieve is seriously pulverized and pollutes other molecular sieves at the position of an air inlet caused by the traditional air inlet channel design is avoided, and the service life of the molecular sieve under the same external environment is greatly prolonged.

The Tesla valve type molecular sieve module adopts a modularized design, and the oxygen production capacity of a single module is 500ml. The single module is small in size, and in equipment with limited and dispersed internal space, such as portable oxygen production equipment, multi-point distributed flexible arrangement can be carried out, and the internal space of the equipment is utilized as much as possible. In large-scale Cheng Misan equipment, a single small module can be rapidly expanded into 1-10L module units in a serial connection mode, and the modules are arranged in a concentrated stacking way at the same point.

In addition, the invention adopts a sealed quick-connection design, so that a user can automatically and quickly replace the molecular sieve module. When the wireless monitoring module, the granularity monitoring module and the oxygen concentration sensor in the air outlet unit are analyzed by the main control unit, the decrease of the oxygen concentration and the increase of the granularity are confirmed, and the molecular sieve module can automatically give an alarm to remind a user of replacement. For the used molecular sieve module, the molecular sieve module is automatically disassembled and filled in a mode of factory recovery, so that the recycling of the molecular sieve cylinder body is realized, and the environmental pollution is reduced. And the user operation end only needs to purchase a new module for replacement. The condition that equipment oxygen production efficiency is reduced due to the fact that after-use pulverization molecular sieves are not in place in filling of the molecular sieves by after-market personnel is effectively avoided.

In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims

1. A molecular sieve apparatus, comprising:

The gas outlet unit is arranged at the second end of the molecular sieve unit, gas in the accommodating cavity flows to a gas outlet of the gas outlet unit through a plurality of gas outlet channels, gas inlets of the gas outlet channels are arranged at a plurality of position points of the accommodating cavity, the gas outlet channels are of a Tesla valve structure, and the gas flowing through the gas outlet channels is accelerated;

the bottom of the accommodating cavity is provided with a plurality of air vents, the end face of the molecular sieve unit, which faces the air outlet unit, is provided with a plurality of air outlet channels, the air vents are correspondingly communicated with one ends of the air outlet channels, and the other ends of the air outlet channels are converged in the air collecting groove;

the air outlet unit is clung to the second end of the molecular sieve unit, the air outlet channel and the side surface of the air outlet unit form the air outlet channel, and the air outlet of the air outlet unit is directly communicated with the air collecting groove;

an air flow channel which surrounds the accommodating cavity and is internally provided with a plurality of Tesla valve structures, and the air flowing out of the air inlet unit enters the accommodating cavity through the air flow channel;

2. The molecular sieve device according to claim 1,

The plurality of air outlet flow channels are radially arranged with the air collecting grooves as the center.

3. The molecular sieve device according to claim 1,

The molecular sieve unit is towards be equipped with the recess on the terminal surface of unit of giving vent to anger, the runner of giving vent to anger with the gas collecting channel all is located in the recess, the unit of giving vent to anger hugs closely in the recess.

4. A molecular sieve device according to any one of claim 1 to 3,

The air flow from the air flow channel enters the accommodating cavity along Zhou Xiangqie of the accommodating cavity.

5. A molecular sieve device according to any one of claim 1 to 3,

The plurality of air flow channels comprise a plurality of first air flow channels and a plurality of second air flow channels, the air outlets of the first air flow channels are positioned at the lower part of the accommodating cavity, and the air outlets of the second air flow channels are positioned at the upper part of the accommodating cavity.

6. The molecular sieve device according to claim 5,

The air outlet of the air inlet unit is directly communicated with the air inlet of the first air flow channel, and the air flow in the first air flow channel flows from the first end to the second end of the molecular sieve unit;

7. The molecular sieve device according to claim 6, wherein,

The molecular sieve unit comprises an outer cylinder part and an inner cylinder part, the inner cylinder part is arranged in the outer cylinder part, and the inner cylinder part forms the accommodating cavity;

8. An oxygenerator comprising a molecular sieve device according to any one of claims 1 to 7.