Oxygen output module, oxygen supply system and oxygen station

Abstract

The utility model relates to the field of medical equipment, and discloses an oxygen output module, an oxygen supply system and an oxygen station, the oxygen output module comprises an oxygen compressor (32), and an inflation flow control valve (41) and an oxygen outlet control valve (39) which are arranged on a downstream air path of the oxygen compressor (32); an air path part between the inflation flow control valve (41) and the oxygen outlet control valve (39) is suitable for being detachably connected with an oxygenation container, and in the connection state, the oxygen outlet control valve (39) can be controlled to output oxygen inflated into the oxygenation container outwards so that a user can directly inhale the oxygen. According to the oxygen output module, multiple functions such as oxygen filling and oxygen inhalation can be achieved by applying one gas circuit, the oxygen output module has the advantage of being simple in structure, people are allowed to directly inhale oxygen while filling oxygen, the use flexibility is greatly improved, and therefore multiple different requirements are met.

Description

Technical Field

[0001] The utility model relates to medical equipment, in particular to an oxygen output module. On this basis, the utility model also relates to an oxygen supply system comprising the oxygen output module and an oxygen station having the oxygen supply system. Background Art

[0002] Oxygen is an indispensable part of human life and metabolism. Affected by the environment, cardiopulmonary health, labor intensity and other aspects, once a serious hypoxia occurs in the body, it will cause damage to physical health and even directly endanger life. Not only that, a short period of brain hypoxia will cause irreversible damage, causing other complications and even brain death. Therefore, for patients with respiratory diseases, craniocerebral trauma, neuromuscular diseases, respiratory muscle weakness and other conditions that make it difficult to breathe normally, they need to use ventilators, oxygen concentrators, etc. to ensure adequate oxygen supply.

[0003] In the state of hypoxia, such as in high altitude areas or after strenuous exercise, people will experience emotional problems such as headaches, nausea, shortness of breath, nasopharyngeal discomfort, negativity and irritability, which will not only affect the quality of normal work, study and life, but also physical health is a key issue that cannot be wrong. Therefore, how to allow more people to obtain clean oxygen conveniently, safely, quickly and effectively becomes particularly important. At present, non-patient personnel mainly obtain oxygen through oxygen concentrators and small oxygen bags or oxygen cylinders and other equipment. Among them, oxygen concentrators are usually only suitable for use in indoor environments, and one device can generally only be used by one person in the same period of time, and cannot be shared by multiple people at the same time. The noise it makes during operation will affect the quietness of the working and living environment, and the cost of use and maintenance is also high; small oxygen bags or oxygen cylinders need to be inflated by large medical oxygen filling equipment or high-pressure gas cylinders, which are not suitable for people's regular oxygen therapy.

[0004] The prior art also proposes an integrated oxygen production and filling machine that can produce oxygen and fill the filling container with oxygen, but it can only fill the oxygen filling container with oxygen, and cannot meet people's oxygen inhalation needs while filling oxygen, which restricts its application flexibility and adaptability. If the gas circuits for oxygenation and oxygen inhalation are set separately on large medical oxygen filling equipment or high-pressure gas cylinders or oxygen production equipment, it will lead to the complexity of the system. Utility Model Content

[0005] The purpose of the utility model is to provide an oxygen output module, which can simultaneously meet multiple different needs such as oxygen inhalation, oxygen compression and oxygenation, and can meet the needs of oxygen inhalation while oxygenating, greatly improving the use flexibility and convenience of the integrated system of production and filling, making it easier to integrate oxygen therapy into the lives of more people and improve people's quality of life and work status.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an oxygen output module on the one hand, including an oxygen compressor for pressurizing finished oxygen and an inflation flow control valve and an oxygen outlet control valve arranged on the downstream air path of the oxygen compressor, and the air path portion between the inflation flow control valve and the oxygen outlet control valve is suitable for detachably connecting to an oxygenating container. In the connected state, the oxygen outlet control valve can be controlled to output the oxygen filled in the oxygenating container to the outside for direct inhalation by a user.

[0007] Preferably, the oxygen output module further comprises an oxygen storage tank arranged on the gas path portion between the oxygen compressor and the inflation flow control valve, the oxygen storage tank being provided with a pressure sensor, and the oxygen compressor can be started and stopped according to a pressure signal detected by the pressure sensor.

[0008] Preferably, a one-way conducting member is provided between the oxygen storage tank and the inflation flow control valve, and the one-way conducting member is used to achieve one-way conduction of oxygen in the oxygen storage tank when the oxygen filling container is connected and oxygenation is performed.

[0009] Preferably, the oxygen output module further comprises one or more of a pressure regulating valve, a bacteria filter, an oxygen concentration sensor, and a flow regulating valve arranged upstream of the oxygen compressor.

[0010] Another aspect of the present invention provides an oxygen supply system, comprising:

[0011] an air compression module configured to form pressurized air by pressurizing ambient air;

[0012] a controllable oxygen module configured to receive the pressurized air and produce finished oxygen;

[0013] The aforementioned oxygen output module is connected to the controllable oxygen module to receive the finished oxygen.

[0014] Preferably, the controllable oxygen module comprises a finished oxygen storage tank for storing product gas, and the finished oxygen storage tank is communicated with the air inlet end of the oxygen compressor.

[0015] Preferably, the air compression module comprises a variable frequency air compressor and at least some of the following components:

[0016] An air intake filter and / or an air intake silencer arranged upstream of the variable frequency air compressor;

[0017] A cooling fan for causing airflow to flow through the variable frequency air compressor;

[0018] An air cooler and / or an air balance tank are arranged downstream of the variable frequency air compressor.

[0019] Preferably, the controllable oxygen module includes a molecular sieve adsorption unit and an air intake path connected to a first port of the molecular sieve adsorption unit and a product gas exhaust path connected to a second port of the molecular sieve adsorption unit, the air compression module is connected to the air intake path so as to be able to pass pressurized air into the molecular sieve adsorption unit, and at least a portion of the product gas generated by the molecular sieve adsorption unit can be transported outward through the product gas exhaust path.

[0020] Preferably, the controllable oxygen module comprises:

[0021] A plurality of said molecular sieve adsorption units are arranged in groups;

[0022] A desorption waste gas exhaust gas path and a first control valve group arranged on the air intake gas path and the desorption waste gas exhaust gas path, the first control valve group can be controlled so that the air intake gas path is selectively connected to the first port of a part of the molecular sieve adsorption unit, and the desorption waste gas exhaust gas path is connected to the first port of another part of the molecular sieve adsorption unit.

[0023] Preferably, the controllable oxygen module also includes a second control valve group arranged on the product gas exhaust gas path, and the second control valve group is configured to enable the second port of the molecular sieve adsorption unit connected to the air intake gas path and the second port of the molecular sieve adsorption unit connected to the desorption waste gas exhaust gas path to be interconnected, so that when pressurized air is introduced into a part of the molecular sieve adsorption units through the air intake gas path, at least part of the product gas generated is introduced into another part of the molecular sieve adsorption units to backwash and clean the molecular sieve beds therein, and the generated desorption waste gas is discharged through the desorption waste gas exhaust gas path.

[0024] Preferably, a nitrogen exhaust silencer is provided on the desorption waste gas exhaust gas path, and / or the controllable oxygen module includes a plurality of groups of molecular sieve adsorption units that share at least part of the air intake path, the desorption waste gas exhaust path and the product gas exhaust path.

[0025] A third aspect of the utility model provides an oxygen station comprising the above oxygen supply system.

[0026] Through the above technical solution, the oxygen output module of the utility model is suitable for pressurizing oxygen such as from the oxygen production module by using an oxygen compressor, and can fill oxygen into the oxygen filling container by connecting the oxygen filling bag, oxygen filling cylinder and other oxygen filling containers to the downstream gas path of the oxygen compressor. At the same time, the user can obtain oxygen that can be directly inhaled through the oxygen outlet control valve, thereby using one gas path to achieve multiple functions such as oxygenation and oxygen inhalation, which has the advantage of simple structure and allows people to directly inhale oxygen while oxygenating, greatly increasing the flexibility of use to meet a variety of different oxygen therapy needs. The oxygen supply system and oxygen station with the oxygen output module can be arranged in public areas such as hospitals, communities, shopping malls, schools, office buildings, airports and railway stations, so as to achieve sharing by multiple people, greatly improving the convenience of people obtaining oxygen, making oxygen therapy more widely integrated into the lives of more people, and improving people's quality of life and work status. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of an oxygen supply system according to a preferred embodiment of the utility model;

[0028] Figure 2 yes Figure 1 Schematic diagram of the air compression module of the oxygen supply system;

[0029] Figure 3 yes Figure 1 Schematic diagram of the controllable oxygen module of the oxygen supply system;

[0030] Figure 4 yes Figure 1 Schematic diagram of the oxygen output module of the oxygen supply system.

[0031] Description of Reference Numerals

[0032] 1-intake filter; 2-intake silencer; 3-frequency conversion air compressor; 4-cooling fan; 5-air cooler; 6-air balance tank; 7, 9, 11, 13-air intake control valve; 8, 10, 12, 14-desorption exhaust gas control valve; 15, 16, 17, 18-molecular sieve adsorption unit; 19, 20-throttle valve; 21, 22-equalizing pressure valve; 23, 24, 25, 26-check valve; 27-finished oxygen storage tank; 28-pressure regulating valve; 29-bacterial filter; 30- Oxygen concentration sensor; 31-flow regulating valve; 32-oxygen compressor; 33-turbo cooling fan; 34-oxygen storage tank; 35-pressure sensor; 36-one-way conductor; 37-filling oxygen bag; 38-filling oxygen cylinder; 39-oxygen outlet control valve; 40-nitrogen exhaust silencer; 41-charging flow control valve; L1-air intake air path; L2-desorption waste gas exhaust air path; L3-product gas exhaust air path; L31-product gas exhaust branch; L32-throttling ventilation branch; L33-equalizing pressure ventilation branch.

[0033] 101 - air compression module; 102 - controllable oxygen module; 103 - oxygen output module. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0035] Reference Figure 1 As shown, according to a preferred embodiment of the present invention, the oxygen supply system comprises an air compression module 101, a controllable oxygen module 102 and an oxygen output module 103, wherein the air compression module 101 is configured to form pressurized air by pressurizing ambient air, so as to supply the pressurized air to the controllable oxygen module 102 to produce product gas; the controllable oxygen module 102 comprises a molecular sieve adsorption unit (such as the first molecular sieve adsorption unit 15, the second molecular sieve adsorption unit 16, the third molecular sieve adsorption unit 17 and the fourth molecular sieve adsorption unit 1 8) and an air inlet path L1 connected to the first port of the molecular sieve adsorption unit and a product gas exhaust path L3 connected to the second port of the molecular sieve adsorption unit, the air compression module 101 is connected to the air inlet path L1 so as to be able to pass pressurized air into the molecular sieve adsorption unit to produce product gas, and at least a portion of the product gas generated by the molecular sieve adsorption unit can be transported outward through the product gas exhaust path L3; the oxygen output module 103 is connected to the product gas exhaust path L3 to receive and output the product gas from the product gas exhaust path L3.

[0036] Thus, the oxygen supply system can form pressurized air by compressing ambient air through the air compression module 101, and supply the pressurized air to the molecular sieve adsorption unit through the air intake air path L1 for adsorption oxygen production, and the produced oxygen is transported to the oxygen output module 103 through the product gas exhaust air path, so that people can obtain oxygen from the oxygen output module 103. Oxygen stations with the oxygen supply system can be arranged in public areas such as hospitals, communities, shopping malls, schools, office buildings, airports and railway stations, so as to achieve sharing by multiple people, greatly improving the convenience of people obtaining oxygen, making oxygen therapy more widely integrated into the lives of more people, and improving people's quality of life and working conditions.

[0037] Combination Figure 4 As shown, the utility model provides an oxygen output module 103 that can be used for the above-mentioned oxygen supply system, and the oxygen output module 103 includes an oxygen compressor 32 and an air charging flow control valve 41 and an oxygen outlet control valve 39 arranged on the downstream air path of the oxygen compressor 32, and the air path portion between the air charging flow control valve 41 and the oxygen outlet control valve 39 is suitable for detachably connecting to a filling oxygen container such as a filling oxygen bag 37 and / or a filling oxygen cylinder 38. In the connected state, the oxygen outlet control valve 39 can be controlled to output the oxygen filled in the oxygen filling container to the outside for direct inhalation by the user.

[0038] Through this arrangement, the oxygen output module 103 is formed into an oxygen charging and breathing integrated module, which is suitable for using the oxygen compressor 32 to pressurize the oxygen from the controllable oxygen module 102, and can be used to directly provide oxygen therapy gas to the user, and can also be used to oxygenate the oxygenation container by connecting the oxygenation container such as the filling oxygen bag 37 and the filling oxygen cylinder 38 to the downstream gas path of the oxygen compressor 32. The oxygen output module can realize multiple functions such as oxygenation and oxygenation by using one gas path, has the advantages of simple structure, and allows people to directly inhale oxygen while oxygenating, greatly increasing the flexibility of use, thereby meeting a variety of different oxygen therapy needs. The oxygen supply system and oxygen station with the oxygen output module can be arranged in public areas such as hospitals, communities, shopping malls, schools, office buildings, airports and railway stations, so as to achieve multi-person sharing, greatly improving the convenience and diversity of people's access to oxygen, making oxygen therapy more widely integrated into the lives of more people, and improving people's quality of life and work status.

[0039] Combination Figure 1 and Figure 4As shown, the oxygen output module 103 may include a pressure regulating valve 28, a bacterial filter 29, an oxygen concentration sensor 30, a flow regulating valve 31, an oxygen compressor 32, an oxygen storage tank 34, a one-way guide 36, an air filling flow control valve 41, etc. connected in sequence. The oxygen output module 103 can control the high-concentration oxygen produced by the oxygen module 102 to adjust the pressure, rectify, sterilize and filter, and perform secondary pressurization of the compressor so that the high-pressure oxygen storage tank can be loaded into the oxygen filling container, and the user can use the oxygen in the oxygen filling container at any time according to the needs. The user can either fill the oxygen separately and take it away for backup, or can obtain oxygen in time while filling and breathing, so as to meet the needs of different usage scenarios. It can be understood that some components in the oxygen output module 103 shown in the figure are not all necessary. The following describes their respective functions in combination with the oxygen output process:

[0040] The oxygen from the controllable oxygen module 102 first passes through the pressure regulating valve 28, which can reduce the pressure of the oxygen and stabilize the output pressure of the oxygen; then, it is filtered through the bacterial filter 29 to filter out the tiny bacteria and impurities that may remain in the product gas, ensuring that the oxygen produced by the equipment is pure and suitable for human inhalation. The filtered oxygen is regulated and controlled by the flow regulating valve 31 for the product gas flow rate, and the oxygen concentration sensor 30 can detect the oxygen concentration before the gas is pressurized to ensure that the produced oxygen can reach the medical oxygen concentration range.

[0041] The high-concentration oxygen that has been detected is re-pressurized by the oxygen compressor 32, and the finished oxygen that has been re-pressurized enters the oxygen storage tank 34 for storage. The turbo cooling fan 33 is used to promote the heat dissipation of the oxygen compressor 32 to ensure its good operating state and service life. The pressure sensor 35 is used to monitor the product gas pressure in the oxygen storage tank 34. On the one hand, it is used to provide a pressure signal to stop gas compression when the pressure in the oxygen storage tank 34 is high, so that the oxygen compressor 32 stops running; on the other hand, it is used to send a start signal when the oxygen storage tank 34 is under low pressure, so that the oxygen compressor 32 starts running. The high-pressure oxygen in the oxygen storage tank 34 can be passed through a one-way conducting member 36 (such as a one-way valve). When the oxygenation function is turned on, the gas flow control valve 41, such as a proportional valve, is opened, and the high-concentration oxygen in the oxygen storage tank 34 is used to fill oxygen containers such as the oxygen bag 37 or the oxygen cylinder 38. The opening of the gas flow control valve 41 can be set to slowly start the pressure when the filling container is at a low pressure, and slowly reduce the pressure when it is about to be full, until the gas flow control valve 41 is closed when the container is full. This setting not only improves the safety of oxygenation, but also can quickly use the prefabricated product oxygen in the oxygen storage tank 34 to fill the oxygenation container, realize the fast filling function, and reduce the user's waiting time for oxygenation. Among them, the one-way conducting member 36 is set to only allow oxygen to flow to the oxygenation container in one direction when oxygenating the oxygenation container.

[0042] The oxygen storage tank 34 serves as a temporary storage component for high-pressure product oxygen. It can receive a signal from the pressure sensor 35 to control the start and stop of the oxygen compressor 32, so that the compressor does not have to be in a high-load working state for a long time, thereby extending the service life of the compressor.

[0043] In the oxygen output module 103, a quick connector for connecting an oxygenation container may be provided at the oxygenation outlet so as to be easily connected to the oxygenation port of the oxygenation container. On one side of the oxygen supply port of the oxygenation container, an oxygen outlet control valve 39 may be provided, and the oxygen outlet control valve 39 may be controlled so that the output oxygen is suitable for direct inhalation by the user, such as a lung breathing valve, a constant flow valve, or a pulse oxygen supply valve. The oxygen outlet control valve 39 is provided with an oxygen outlet, which may be connected to a nasal oxygen tube, and finally oxygen is delivered to the human body. The oxygen output module 103 integrates oxygenation and oxygen inhalation, and has a simple and compact structure. While the user is filling oxygen, the oxygen in the tank may also be used for oxygen inhalation, meeting the different use environments and needs of the user.

[0044] Reference Figure 1 and Figure 3 As shown, in a preferred embodiment of the utility model, the controllable oxygen module 102 includes a plurality of molecular sieve adsorption units and a desorption exhaust gas exhaust gas path L2 arranged in groups, and a first control valve group is provided on the air intake gas path L1 and the desorption exhaust gas exhaust gas path L2. In the preferred embodiment shown in the figure, the first molecular sieve adsorption unit 15 and the second molecular sieve adsorption unit 16 are provided as a group, and the third molecular sieve adsorption unit 17 and the fourth molecular sieve adsorption unit 18 are provided as a group; the first control valve group includes a first air intake control valve 7, a first desorption exhaust gas exhaust control valve 8, a second air intake control valve 9, a second desorption exhaust gas exhaust control valve 10, etc., which will be described in detail later.

[0045] The first control valve group can be controlled to selectively connect the air intake air path L1 to the first port of a part of the molecular sieve adsorption units, and connect the desorption waste gas exhaust air path L2 to the first port of another part of the molecular sieve adsorption units. Thus, the pressurized air generated by the air compression module 101 compressing the ambient air can be delivered to the connected molecular sieve adsorption units through the air intake air path L1; at the same time, the desorption waste gas generated by backwashing and cleaning another part of the molecular sieve adsorption units can be discharged through the desorption waste gas exhaust air path L2. For example, the first control valve group can be controlled to make the air intake air path L1 connected to the first molecular sieve adsorption unit 15 and the third molecular sieve adsorption unit 17, and make the desorption waste gas exhaust air path L2 connected to the second molecular sieve adsorption unit 16 and the fourth molecular sieve adsorption unit 18, so that the pressurized air can be transported to the first molecular sieve adsorption unit 15 and the third molecular sieve adsorption unit 17 through the air intake air path L1, so that the nitrogen and other components in the air can be adsorbed through the molecular sieve bed (such as zeolite molecular sieve) therein to produce oxygen. At the same time, by back-blowing the second molecular sieve adsorption unit 16 and the fourth molecular sieve adsorption unit 18, the molecular sieve bed therein can be back-blown and cleaned, and the desorption waste gas generated is discharged through the desorption waste gas exhaust air path L2, and the second molecular sieve adsorption unit 16 and the fourth molecular sieve adsorption unit 18 after desorption can be used to prepare oxygen. In this way, multiple molecular sieve adsorption units in the same group can be operated alternately during use, thereby achieving continuous oxygen production.

[0046] The product gas exhaust gas path L3 is connected to the second port of the molecular sieve adsorption unit, so that when the air inlet gas path L1 introduces pressurized air into the molecular sieve adsorption unit, at least part of the product gas generated is transported outward through the product gas exhaust gas path L3.

[0047] The controllable oxygen module 102 can control the connection relationship between the first ports of multiple molecular sieve adsorption units arranged in groups and the air intake air path L1 and the desorption waste gas exhaust air path L2 by the first control valve group, so that while air is supplied to a part of the molecular sieve adsorption units through the air intake air path L1 for oxygen production, the molecular sieve beds in another part of the molecular sieve adsorption units are backwashed and cleaned, and the generated desorption waste gas is discharged through the first port and the desorption waste gas exhaust air path L2. In this way, multiple molecular sieve adsorption units can operate alternately to achieve continuous oxygen production, and the product gas exhaust air path L3 can keep conveying the produced product gas to the outside, so that people can obtain the oxygen required for oxygen therapy from the oxygen supply system including the controllable oxygen module 102 at any time.

[0048] As mentioned above, the controllable oxygen module 102 shown in the figure schematically shows two groups of molecular sieve adsorption units, and each group of molecular sieve adsorption units includes a pair of molecular sieve adsorption units such as molecular sieve adsorption towers. Thus, through the first control valve group, it can be controlled so that one molecular sieve adsorption unit in each group produces oxygen while the molecular sieve bed of another molecular sieve adsorption unit is backwashed and cleaned, so as to achieve continuous oxygen production through alternating operations. In an alternative embodiment, one or more groups of molecular sieve adsorption units may include three or more molecular sieve adsorption units, and continuous oxygen production can also be achieved by controlling a part of the molecular sieve adsorption units in each group to produce oxygen while backwashing and cleaning the molecular sieve beds of all or part of the remaining molecular sieve adsorption units.

[0049] In addition, for multiple groups of molecular sieve adsorption units, each group can share at least part of the air inlet gas path L1, the desorption waste gas exhaust gas path L2 and the product gas exhaust gas path L3. For example, in the part far away from the first port and the second port, the air, desorption waste gas and product gas can be transported through the shared gas path section respectively, so as to simplify the gas path structure in the controllable oxygen module 102.

[0050] The first control valve group and the second control valve group described later disposed on the product gas exhaust gas path L3 may be a combination of a multi-way valve and / or a single valve capable of realizing gas path on-off control. In the preferred embodiment shown in the figure, the first control valve group and the second control valve group respectively include a plurality of single valves disposed on the corresponding gas path branches, such as pneumatic valves / unit single-way solenoid valves, one-way valves, needle valves, etc. Specifically, the first control valve group includes a first air intake control valve 7 arranged on the air intake path L1 and a first desorption exhaust gas exhaust control valve 8 arranged on the desorption exhaust gas exhaust path L2 corresponding to the first molecular sieve adsorption unit 15, a second air intake control valve 9 arranged on the air intake path L1 and a second desorption exhaust gas exhaust control valve 10 arranged on the desorption exhaust gas exhaust path L2 corresponding to the second molecular sieve adsorption unit 16, a third air intake control valve 11 arranged on the air intake path L1 and a third desorption exhaust gas exhaust control valve 12 arranged on the desorption exhaust gas exhaust path L2 corresponding to the third molecular sieve adsorption unit 17, and a fourth air intake control valve 13 arranged on the air intake path L1 and a fourth desorption exhaust gas exhaust control valve 14 arranged on the desorption exhaust gas exhaust path L2 corresponding to the fourth molecular sieve adsorption unit 18. Among them, each desorption exhaust gas exhaust control valve and the corresponding air intake control valve can maintain opposite opening and closing states to each other. For example, when the first air intake control valve 7 is in an open state, the first desorption exhaust gas exhaust control valve 8 is in a disconnected state, so that the first molecular sieve adsorption unit 15 is in an oxygen production operation mode. When necessary, each desorption exhaust gas exhaust control valve and the corresponding air intake control valve can also have other opening and closing states, such as being in a disconnected state at the same time, so as to avoid affecting the normal operation of other molecular sieve adsorption units during maintenance or to achieve the pressure equalization process described later.

[0051] The exhaust gas path L2 of the desorbed waste gas can be provided with a nitrogen exhaust silencer 40. The desorbed waste gas is discharged into the atmosphere after passing through the nitrogen exhaust silencer 40. The noise level can be effectively reduced by, for example, impedance composite silencer, so that the oxygen station equipped with the controllable oxygen module can be arranged in public areas such as hospitals, communities, shopping malls, schools, office buildings, airports and railway stations.

[0052] The product gas (mainly oxygen) obtained by adsorbing the pressurized air can be transported outward in whole or in part through the product gas exhaust gas path L3. In a more preferred embodiment of the utility model, part of the obtained product gas is used to backwash and clean the molecular sieve adsorption unit whose molecular sieve bed is close to saturation, so there is no need to set up an additional backwash device. To this end, the controllable oxygen module 102 may include a second control valve group arranged on the product gas exhaust gas path L3, and the second control valve group is arranged to enable the second port of the molecular sieve adsorption unit connected to the air intake gas path L1 to be interconnected with the second port of the molecular sieve adsorption unit connected to the desorption waste gas exhaust gas path L2, so as to enable at least part of the product gas generated by the molecular sieve adsorption unit connected to the air intake gas path L1 to be passed from the second port to the molecular sieve adsorption unit connected to the desorption waste gas exhaust gas path L2, and the molecular sieve adsorption unit is backwashed and cleaned. For example, when the first air intake control valve 7 and the second desorption waste gas exhaust control valve 10 are in an open state, and the first desorption waste gas exhaust control valve 8 and the second air intake control valve 9 are in a disconnected state, the first port of the first molecular sieve adsorption unit 15 is connected to the air intake air path L1, and the first port of the second molecular sieve adsorption unit 16 is connected to the desorption waste gas exhaust air path L2, and the first molecular sieve adsorption unit 15 adsorbs the pressurized air introduced from the air intake air path L1 to produce product gas, wherein at least part of the product gas is discharged from the second port of the first molecular sieve adsorption unit 15 and then introduced into the second molecular sieve adsorption unit 16 through the second port of the second molecular sieve adsorption unit 16, so as to backflush and clean the molecular sieve bed in the second molecular sieve adsorption unit 16, thereby eliminating the need to set up a separate backflush device for the molecular sieve adsorption unit to be cleaned.

[0053] The second port of the molecular sieve adsorption unit connected to the air intake air path L1 can also be connected to the air intake air path L1 while being interconnected with the second port of the molecular sieve adsorption unit connected to the desorption waste gas exhaust gas path L2. Therefore, when pressurized air is introduced into the molecular sieve adsorption unit through the air intake air path L1, a part of the generated product gas is transported outward through the product gas exhaust gas path L3, and another part of the product gas is introduced into other molecular sieve adsorption units to backwash and clean the molecular sieve beds therein, and the generated desorption waste gas is discharged through the desorption waste gas exhaust gas path L2.

[0054] Further, the product gas exhaust gas circuit L3 may include product gas exhaust branches L31 corresponding to the second ports connected to the respective molecular sieve adsorption units, and the second control valve group may include one-way valves respectively arranged on the product gas exhaust branch L31 with the one-way air inlet facing the second ports of the corresponding molecular sieve adsorption units, and in the illustrated embodiment, the one-way valves include the first one-way valve 23, the second one-way valve 24, the third one-way valve 25 and the fourth one-way valve 26 respectively corresponding to the first molecular sieve adsorption unit 15, the second molecular sieve adsorption unit 16, the third molecular sieve adsorption unit 17 and the fourth molecular sieve adsorption unit 18. The one-way air inlet refers to the air inlet in the forward ventilation state of the one-way valve, that is, when the air pressure of the one-way air inlet reaches a predetermined value, the one-way valve is opened.

[0055] The product gas exhaust gas path L3 may also include a throttle ventilation branch L32 connected to the second ports of different molecular sieve adsorption units, and the second control valve group may include throttle valves respectively arranged on the throttle ventilation branch L32. In the illustrated embodiment, it includes a first throttle valve 19 arranged on the throttle ventilation branch L32 connected between the second ports of the first molecular sieve adsorption unit 15 and the second molecular sieve adsorption unit 16, and a second throttle valve 20 arranged on the throttle ventilation branch L32 connected between the second ports of the third molecular sieve adsorption unit 17 and the fourth molecular sieve adsorption unit 18. That is, each throttle ventilation branch L32 is respectively connected to the second ports of the same group of molecular sieve adsorption units, or the grouping of the molecular sieve adsorption units is determined according to whether the throttle ventilation branch L32 is connected between the second ports. The throttle valve can be a needle valve, thereby forming a throttling ventilation branch L32 connected between the second ports of the same group of molecular sieve adsorption units to form a needle-type throttling bridge. The product gas generated by one part of the molecular sieve adsorption unit passes through the needle-type throttling bridge into another part of the molecular sieve adsorption unit to backflush the molecular sieve bed therein and clean the molecular sieve bed therein.

[0056] The product gas exhaust gas path L3 may also include a pressure equalizing ventilation branch L33 connected to the second ports of different molecular sieve adsorption units, and the second control valve group may include pressure equalizing valves respectively arranged on the pressure equalizing ventilation branch L33. In the illustrated embodiment, it includes a first pressure equalizing valve 21 arranged on the pressure equalizing ventilation branch L33 connected between the second ports of the first molecular sieve adsorption unit 15 and the second molecular sieve adsorption unit 16, and a second throttle valve pressure equalizing valve 22 arranged on the pressure equalizing ventilation branch L33 connected between the second ports of the third molecular sieve adsorption unit 17 and the fourth molecular sieve adsorption unit 18. In the switching process of alternating operations, that is, when a part of the molecular sieve adsorption units complete the adsorption process and the other part of the molecular sieve adsorption units complete the desorption and regeneration process, the pressure in different molecular sieve adsorption units can be equalized through the pressure equalizing ventilation branch L33 to recover part of the gas pressure energy and oxygen with a higher concentration. In the pressure equalization process, each air intake control valve on the air intake air path L1 and each desorption exhaust gas exhaust control valve on the desorption exhaust gas exhaust air path L2 remain disconnected, and the pressure equalization valve on the pressure equalization ventilation branch L33 remains open. For example, the first molecular sieve adsorption unit 15 and the third molecular sieve adsorption unit 17 are in the adsorption stage, and the second molecular sieve adsorption unit 16 and the fourth molecular sieve adsorption unit 18 are in the desorption stage. Before the molecular sieve bed in the first molecular sieve adsorption unit 15 and the third molecular sieve adsorption unit 17 is close to saturation, each air intake control valve and desorption exhaust gas exhaust control valve are closed, and each pressure equalization valve is opened. The first molecular sieve adsorption unit 15 and the third molecular sieve adsorption unit 17 complete the adsorption process, and the second molecular sieve adsorption unit 16 and the fourth molecular sieve adsorption unit 18 complete the desorption regeneration process, and then enter the pressure equalization process, the pressure in the first molecular sieve adsorption unit 15 and the third molecular sieve adsorption unit 17 decreases, and the pressure in the second molecular sieve adsorption unit 16 and the fourth molecular sieve adsorption unit 18 increases. After the pressure equalization process is completed, by controlling the opening and closing state of the first control valve group, the first molecular sieve adsorption unit 15 and the third molecular sieve adsorption unit 17 enter the desorption stage, and the second molecular sieve adsorption unit 16 and the fourth molecular sieve adsorption unit 18 enter the adsorption stage. In this way, the adsorption and desorption processes can be completed alternately, so that clean oxygen can be continuously separated from the air.

[0057] The first control valve group and the second control valve group can be linked and combined with each group of molecular sieve adsorption units for control, and a single adsorption tower and a double adsorption tower can be operated in parallel according to different oxygen demand. Through the above-mentioned first control valve group, the number of adsorption towers involved in oxygen production can be flexibly controlled, and the flexibility of the variable frequency air compressor 3 in the air compression module 101 as described later can be combined to adjust the balance point between oxygen production capacity and power consumption efficiency.

[0058] In the controllable oxygen module, a finished product oxygen storage tank 27 may also be provided on the product gas exhaust gas path L3, and the finished product oxygen storage tank 27 is provided downstream of the second control valve group, and is used to store the product gas generated by the adsorption of air. Thus, the working state of the molecular sieve adsorption unit can be controlled according to the gas storage amount in the finished product oxygen storage tank 27 (such as by controlling the working state of the air compression module 101), so that when the user breathes oxygen or oxygenates, there is no need for the molecular sieve adsorption unit to produce oxygen in real time, and the oxygen produced by the molecular sieve adsorption unit can be stored in the finished product oxygen storage tank 27.

[0059] In use, the air compression module 101 supplies air to be adsorbed to the controllable oxygen module 102 . The air compression module 101 is configured to form pressurized air by pressurizing ambient air and pass the pressurized air into the molecular sieve adsorption unit through the air inlet air path L1 .

[0060] In a preferred embodiment, the combination Figure 1 and Figure 2 As shown, the air compression module 101 includes a variable frequency air compressor 3, which can be a DC variable frequency air compressor, and can obtain pressurized air by compressing ambient air or filtered clean air for use by the controllable oxygen module 102. The variable frequency air compressor 3 can operate at different powers according to the oxygen production demand, so as to obtain the best energy efficiency.

[0061] In addition, the air compression module 101 may also include one or more of an air intake filter 1, an air intake silencer 2, a cooling fan 4, an air cooler 5, and an air balance tank 6. The air intake filter 1 and the air intake silencer 2 are arranged upstream of the variable frequency air compressor 3. The air intake filter 1 can be connected to the air intake nozzle of the variable frequency air compressor 3 through a pipeline to filter the ambient air to ensure that the compressed air compressed by the variable frequency air compressor 3 and entering the subsequent controllable oxygen module 102 remains clean. A resistive silencer structure may be provided in the air intake silencer 2 to filter and eliminate the noise caused by the compressor suction and the friction of the leather cup.

[0062] The cooling fan 4 is used to prevent the variable frequency air compressor 3 from overheating by promoting air flow through the variable frequency air compressor 3. It can be specifically set as a turbo cooling fan. During the operation of the variable frequency air compressor 3, the cooling fan 4 is started to dissipate the heat generated by the current and air compression in the variable frequency air compressor 3 in time to ensure that the compressor maintains a good working condition and service life.

[0063] The air cooler 5 may be connected to the compressed air outlet of the variable frequency air compressor 3 via a pipeline, and may be specifically configured to have a spiral copper tube for heat dissipation, thereby reducing the temperature of the compressed gas.

[0064] In the part adjacent to the controllable oxygen module 102, the air compression module 101 can be provided with an air balance tank 6. For example, the air balance tank 6 can be connected to the air cooler 5 through a pipeline, and the compressed air after cooling by the air cooler 5 can be temporarily stored in the air balance tank 6. Through the setting of the air balance tank 6, on the one hand, the pressure swing adsorption process can obtain a more stable gas volume and pressure supply. On the other hand, when the equipment is used at a higher altitude and low pressure, the compressed air in the air balance tank 6 can be used as a prefabricated buffer gas volume to make up for the loss caused by the low pressure. Combined with the molecular sieve in the molecular sieve adsorption unit, it can be more thoroughly desorbed and desorbed at high altitudes, so as to better ensure that good oxygen production performance is maintained at high altitudes. In addition, when the controllable oxygen module 102 is in the process of equalizing pressure, the air intake control valves on the air intake air path L1 are all kept in the disconnected state, and the compressed air generated by the variable frequency air compressor 3 can also be cached in the air balance tank 6.

[0065] It is understandable that some components in the above-mentioned air compression module 101 are not necessary. For example, in areas of normal altitude such as plains, the air cooler 5 and the air balance tank 6 can be omitted. These components, as components for optimizing oxygen production performance and enhancing stability, can make the equipment more environmentally adaptable. In addition, the air balance tank 6 or the air intake air path L1 connected thereto can be provided with a side connection joint for outputting pressurized air to provide compressed air for air pressurization and atomization.

[0066] The utility model also provides an oxygen station including the above oxygen supply system. The oxygen station can have the following technical parameters, for example: the concentration of oxygen produced can meet the concentration requirement of 93%±3 of the medical oxygen standard, the oxygen production flow rate is 0-10L / min, the compressed oxygen flow rate is 0-5L / min, and the compressed oxygen pressure can reach up to 30Mpa.

[0067] The oxygen station of the preferred embodiment of the utility model can have the following advantages:

[0068] (1) Compared with traditional household oxygen concentrators, this oxygen station can be shared regionally and integrates four functions: oxygen production, oxygen inhalation, oxygen compression, and oxygen filling. It can be used to provide oxygen therapy to users and can also be used to quickly fill oxygen storage containers such as oxygen bags and oxygen cylinders, so that people can freely inhale oxygen anytime and anywhere after filling. Even if multiple people are undergoing oxygen therapy at the same time, it will not affect the quietness of the environment. At the same time, the use and maintenance costs are greatly reduced compared to multiple oxygen concentrators;

[0069] (2) It can be conveniently placed near hospitals, communities, shopping malls, schools, office buildings, airports and railway stations, making it as easy for people to get oxygen as to get a cup of hot water. This greatly improves the convenience of obtaining oxygen, allowing the beneficial effects of oxygen therapy to be widely integrated into the lives of more people, and improving people's quality of life and work status;

[0070] (3) The setting of the air balance tank can, on the one hand, enable the pressure swing adsorption process to obtain a more stable gas volume and pressure supply, and on the other hand, enhance the environmental adaptability of the equipment under high altitude and low pressure conditions. The compressed air in the high-pressure air balance tank will be used as a prefabricated buffer gas to make up for the loss caused by low pressure. Combined with the more thorough performance of the molecular sieve in the adsorption tower in the desorption process at high altitudes, the equipment can be better stabilized to maintain good oxygen production performance at high altitudes.

[0071] (4) The high-performance DC variable frequency compressor is combined with a dedicated oxygen production module, which has a larger output gas volume, more stable oxygen production performance, rapid oxygen output, and high oxygen purity; combined with intelligent variable frequency control, the mode is selected according to the type of oxygen filling container to be filled, and intelligent control of oxygen filling pressure is provided. The system can judge and automatically adjust the number of adsorption towers involved in oxygen production and the adsorption pressure according to the amount of oxygen stored in the equipment and the requirements of different filling containers and oxygen absorption, so as to flexibly adjust the oxygen production capacity. This can not only meet the needs of different oxygen consumption, but also greatly improve the oxygen production energy consumption ratio, flexibility and oxygen production efficiency of the equipment;

[0072] (5) Compared with large-scale oxygen production and oxygenation equipment, this oxygen station is more convenient for civilian use, with low noise, small size, higher safety, and lower energy consumption and maintenance costs; the proportional valve set at the oxygenation outlet facilitates the rapid use of prefabricated oxygen in the equipment to quickly fill the user's oxygenation container, shortening the user's waiting time for oxygenation and improving the convenience of equipment use;

[0073] (6) A single circuit is used to realize the integrated functions of charging and oxygen therapy. The structure is simple, and the charging-while-using method greatly increases the flexibility of the equipment, allowing users to perform oxygen therapy more freely.

[0074] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. An oxygen output module, characterized in that: The invention comprises an oxygen compressor (32) for pressurizing finished oxygen, and an air filling flow control valve (41) and an oxygen outlet control valve (39) arranged on a downstream air path of the oxygen compressor (32), wherein the air path portion between the air filling flow control valve (41) and the oxygen outlet control valve (39) is suitable for being detachably connected to an oxygen filling container, and in a connected state, the oxygen outlet control valve (39) can be controlled to output the oxygen filled in the oxygen filling container to the outside for direct inhalation by a user.

2. The oxygen output module according to claim 1, characterized in that: The oxygen output module further comprises an oxygen storage tank (34) arranged on the gas path between the oxygen compressor (32) and the inflation flow control valve (41), the oxygen storage tank (34) being provided with a pressure sensor (35), and the oxygen compressor (32) can be started and stopped according to a pressure signal detected by the pressure sensor (35).

3. The oxygen output module according to claim 2, characterized in that: A one-way conducting member (36) is provided between the oxygen storage tank (34) and the inflation flow control valve (41), and the one-way conducting member (36) is used to achieve one-way conduction of oxygen in the oxygen storage tank (34) when the oxygenation container is connected and oxygenation is performed.

4. The oxygen output module according to claim 1, characterized in that: The oxygen output module further comprises one or more of a pressure regulating valve (28), a bacteria filter (29), an oxygen concentration sensor (30), and a flow regulating valve (31) arranged upstream of the oxygen compressor (32).

5. An oxygen supply system, characterized in that: include: An air compression module (101), the air compression module (101) being configured to form pressurized air by pressurizing ambient air; A controllable oxygen module (102) configured to receive the pressurized air and produce finished oxygen; The oxygen output module (103) according to any one of claims 1 to 4, the oxygen output module (103) is connected to the controllable oxygen module (102) to receive the finished oxygen.

6. The oxygen supply system according to claim 5, characterized in that: The controllable oxygen module (102) comprises a finished oxygen storage tank (27) for storing product gas, and the finished oxygen storage tank (27) is connected to the air inlet end of the oxygen compressor (32).

7. The oxygen supply system according to claim 5, characterized in that: The air compression module (101) comprises a variable frequency air compressor (3) and at least some of the following components: An air intake filter (1) and / or an air intake silencer (2) arranged upstream of the variable frequency air compressor (3); A cooling fan (4) that causes airflow to flow through the variable frequency air compressor (3); An air cooler (5) and / or an air balance tank (6) are arranged downstream of the variable frequency air compressor (3).

8. The oxygen supply system according to claim 5, characterized in that: The controllable oxygen module (102) comprises a molecular sieve adsorption unit (15, 16, 17, 18), an air intake air path (L1) connected to a first port of the molecular sieve adsorption unit (15, 16, 17, 18), and a product gas exhaust air path (L3) connected to a second port of the molecular sieve adsorption unit (15, 16, 17, 18); the air compression module (101) is connected to the air intake air path (L1) so as to be able to pass pressurized air into the molecular sieve adsorption unit (15, 16, 17, 18), and at least a portion of the product gas generated by the molecular sieve adsorption unit (15, 16, 17, 18) can be transported outward through the product gas exhaust air path (L3).

9. The oxygen supply system according to claim 8, characterized in that: The controllable oxygen module (102) comprises: A plurality of the molecular sieve adsorption units (15, 16, 17, 18) arranged in groups; A desorption waste gas exhaust gas path (L2) and a first control valve group arranged on the air intake path (L1) and the desorption waste gas exhaust gas path (L2), wherein the first control valve group can be controlled so that the air intake path (L1) is selectively connected to the first port of a part of the molecular sieve adsorption units (15, 16, 17, 18), and the desorption waste gas exhaust gas path (L2) is connected to the first port of another part of the molecular sieve adsorption units (15, 16, 17, 18).

10. The oxygen supply system according to claim 9, characterized in that: The controllable oxygen module (102) further comprises a second control valve group arranged on the product gas exhaust gas path (L3), the second control valve group being arranged so as to enable the second port of the molecular sieve adsorption unit (15, 16, 17, 18) connected to the air intake gas path (L1) to be connected to the second port of the molecular sieve adsorption unit (15, 16, 17, 18) connected to the desorption waste gas exhaust gas path (L2) to be connected to each other, so that when pressurized air is introduced into a part of the molecular sieve adsorption units (15, 16, 17, 18) through the air intake gas path (L1), at least a part of the product gas generated is introduced into another part of the molecular sieve adsorption units (15, 16, 17, 18) to backwash and clean the molecular sieve beds therein, and the generated desorption waste gas is discharged through the desorption waste gas exhaust gas path (L2).

11. The oxygen supply system according to claim 9, characterized in that: The desorption waste gas exhaust gas path (L2) is provided with a nitrogen exhaust silencer (40), and / or the controllable oxygen module (102) comprises a plurality of groups of the molecular sieve adsorption units (15, 16, 17, 18) which share at least part of the gas path sections of the air intake gas path (L1), the desorption waste gas exhaust gas path (L2) and the product gas exhaust gas path (L3).

12. An oxygen station, characterized in that: The oxygen station comprises an oxygen supply system according to any one of claims 5 to 11.

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