TWI788904B - Gas concentrator - Google Patents

Abstract

A gas concentrator including at least one gas concentrating module is provided. The gas concentrating module includes a body filled with molecular sieve materials, a pipeline connector, and at least one control valve. The body has a first end and a second end opposite to each other, and the pipeline connector located at the first end has an inlet, a first outlet, and a second outlet. The control valve is located between the first end and the pipeline connector to open or close at least one of the inlet, the first outlet, and the second outlet. A first gas is injected into the body via the inlet, and is filtered with the molecular sieve materials to retain and separate a second gas and a third gas.

Description

Gas Concentrator

The invention relates to a gas enrichment device.

Oxygen concentrator is a common medical equipment. At present, conventional medical oxygen concentrators can be divided into two categories according to their principles: one is to produce oxygen through electrolysis of water, and the other is to use molecular sieves to absorb and separate air to absorb oxygen. That is pressure swing adsorption (Pressure Swing Adsorption, PSA). The former method of electrolyzing water to produce oxygen has the advantages of low cost, low noise, and high oxygen concentration, but it is prone to safety concerns. Although the theoretical maximum concentration of the latter filtered by molecular sieve is only 96%, its equipment is simple and safe, and the concentration of oxygen production can meet the oxygen demand of most medical clinics, so it is currently used for the prevention and treatment of hypoxia in patients. main way.

Although the aforementioned oxygen generators using pressure swing adsorption are simple and easy to carry, the existing equipment is still limited by component assembly and pipeline configuration. The components are assembled, so the structure is loose and the assembly space is huge, which makes it difficult to carry and violates the above-mentioned characteristics, and also causes inconvenience and difficulty for users to replace or maintain.

The invention provides a gas enrichment device, which is configured with a simple structure and has the characteristic of quick disassembly and assembly without tools.

The gas enrichment device of the present invention includes at least one gas enrichment module. The gas enrichment module includes a body, a pipeline connector and at least one control valve. The body is filled with molecular sieve filter material, and the body has a first end and a second end opposite to each other. A tubing connector is located at the first end. The pipeline joint has an inlet, a first outlet and a second outlet. The control valve is located between the first end and the pipeline joint and controls opening and closing of at least one of the inlet, the first outlet and the second outlet. The first gas enters the body through the inlet, and the molecular sieve filter material is used to filter the first gas to separate the second gas and the third gas.

In an embodiment of the present invention, the above-mentioned control valve is a two-position three-way solenoid valve. The gas enrichment device also includes a control module, which is electrically connected to the two-position three-way solenoid valve. The first gas is air, the second gas is oxygen, and the third gas is nitrogen. The control module drives the two-position three-way solenoid valve to open the inlet and controls the opening and closing of the first outlet and the second outlet, so that the first gas enters the body through the inlet and is filtered by the molecular sieve filter material to separate the second gas and the third gas, And discharge the second gas out of the body through the first outlet, wherein the control module drives the two-position three-way solenoid valve to close the inlet and the first outlet and open the second outlet to discharge the third gas out of the body through the second outlet.

In an embodiment of the present invention, the above-mentioned at least one control valve includes a two-way solenoid valve and a switch. The two-way solenoid valve is connected and controls the opening and closing of the inlet and the second outlet, and the switch is connected and controls the opening and closing of the first outlet. The gas enrichment device also includes a control module, which is electrically connected to the two-way solenoid valve and the switch respectively. The first gas is air, the second gas is oxygen, and the third gas is nitrogen. The control module drives the two-way solenoid valve to open the inlet and close the second outlet, and the control module drives the switch to open the first outlet, so that the first gas enters the body through the inlet and is filtered by the molecular sieve filter material to separate the second gas and the third gas. gas to discharge the second gas out of the body through the first outlet. The control module drives the two-way solenoid valve to open the second outlet, and close the inlet and the first outlet, so as to discharge the third gas out of the body through the second outlet.

In an embodiment of the present invention, the above-mentioned second gas is discharged from the body through the first outlet, and the third gas is also discharged from the body through the second outlet.

In an embodiment of the present invention, the above-mentioned gas concentrator further includes a conduit disposed in the body. A conduit is connected to the first outlet at the first end and extends to the second end. The second gas enters the conduit from the second end and exits the body through the first outlet.

In an embodiment of the present invention, the above-mentioned molecular sieve filter material includes a plurality of mesh sheets stacked sequentially from the first end to the second end, and the above-mentioned conduit passes through these mesh sheets.

In an embodiment of the present invention, the above-mentioned gas concentration module further includes an elastic member abutting between the mesh at the second end and the body, and the mesh abutting the elastic member is the last of the meshes.

In an embodiment of the present invention, the above-mentioned gas enrichment device includes a plurality of gas enrichment modules, and the plurality of pipeline joints of the gas enrichment modules are of an integrated structure.

In an embodiment of the present invention, the above-mentioned gas enrichment device further includes an air compressor connected to the inlet of at least one of the above-mentioned gas enrichment modules, so as to pressurize and deliver the first gas into the main body through the inlet.

In an embodiment of the present invention, the above-mentioned gas enrichment device further includes an air compressor connected to the second outlet of at least one of the above-mentioned gas enrichment modules, so as to extract the third gas from the main body through the second outlet.

In an embodiment of the present invention, the above-mentioned oxygen concentrator further includes a storage tank connected to the first outlet of at least one of the above-mentioned gas concentration modules to collect the second gas.

In an embodiment of the present invention, the above-mentioned oxygen enrichment device further includes a storage tank connected to the second outlet of at least one of the above-mentioned gas enrichment modules to collect the third gas

Based on the above, the gas concentrating device of the present invention includes at least one gas concentrating module, and the gas concentrating module assembles the pipeline joint on the first end of the main body after filling the molecular sieve filter material in the main body, so that the pipeline joint The inlet, the first outlet, and the second outlet communicate with the inner space of the body, and when the control valve is arranged between the first end and the pipe joint, at least one of the inlet, the first outlet, and the second outlet can be controlled. Opening and closing, wherein the first gas is suitable to enter the body from the inlet of the pipeline joint, and is filtered by molecular sieve filter material to separate the second gas and the third gas. In this way, the gas enrichment module can uniformly regulate the pipeline joints located at the first end, so that the above-mentioned gases all enter and exit from the first end of the main body, thereby achieving the effect of structural simplification.

FIG. 1 is a schematic diagram of a gas enrichment device according to an embodiment of the present invention. Fig. 2 is an exploded view of some components of the gas enrichment device in Fig. 1 . Please refer to FIG. 1 and FIG. 2 at the same time. In this embodiment, the gas concentrator 100 includes main bodies 110A, 110B, pipeline connectors 120A, 120B, and control valves 130A, 130B disposed in the housing. Here, the main bodies 110A and 110B have the same structure, the pipeline joints 120A and 120B have the same structure, and the control valves 130A and 130B have the same structure, so the following (including those shown in FIG. 2 ) will use the main body 110A, the pipeline structure 120A and The control valve 130A is described as an example. That is to say, although this embodiment takes two groups of oxygen concentrators 100 formed with the same structure as an example, but because of the same operating principle, in another unillustrated embodiment, only a single component, such as the main body 110A, The pipeline joint 120A and the control valve 130A can also achieve the same effect. In short, the gas enrichment device 100 of this embodiment is composed of two gas enrichment modules G1 and G2, wherein the gas enrichment module G1 includes a main body 110A, a pipeline connector 120A and a control valve 130A, and the gas enrichment module G2 Including the main body 110B, the pipeline connector 120B and the control valve 130B, the gas enrichment modules G1 and G2 have the same component composition and therefore have the same gas enrichment capability, which will be further described later.

As shown in Figure 2, the exploded view of the main body 110A (the exploded view of the main body 110B is also the same), the main body 110A includes a top cover 111, a bottom cover 113, a cylindrical wall 112, a conduit 114, and a plurality of nets made of molecular sieve filter materials 115 sheet (each mesh sheet has a plurality of meshes as shown), an elastic member 116, and a plurality of seals 117A, 117B, 117C, and 117D, wherein the top cover 111 is assembled to the cylindrical wall 112 and clamped by the seal 117B In between, and form the first end N1 of the body 110A, the bottom cover 113 is assembled to the cylindrical wall 112 and sandwiched by the sealing member 117A, and forms the second end N2 of the body 110A. In this way, the top cover 111 , the cylindrical wall 112 , the bottom cover 113 and the seals 117A, 117B form a space for accommodating multiple laminated mesh sheets, which is equivalent to filling the molecular sieve filter material 115 in the main body 110A. For ease of identification, only part of the molecular sieve filter material 115 is shown here.

Fig. 3 is a cross-sectional view of some components of the gas concentrator in Fig. 1 . Please refer to FIG. 2 and FIG. 3 at the same time. In this embodiment, the conduit 114 is arranged in the body 110A, and as shown in FIG. The other end extends to the second end N2 of the body 110A. As shown in FIG. 3 , the top cover 111 and the bottom cover 113 are respectively screwed to opposite ends of the cylindrical wall 112 to form the aforementioned first end N1 and second end N2 . The elastic member 116 abuts between the mesh at the second end N2 and the body 110A, that is, the mesh abutting the elastic member 116 is the last of the meshes, and driven by the elastic force of the elastic member 116 , so that these nets can be pressed against each other, and at the same time, the elastic member 116 also allows a space to exist between the aforementioned last net and the bottom cover 113, and the opening of the aforementioned conduit 114 extending to the second end N2 is located at the in space.

Furthermore, the pipeline connector 120A is assembled on the first end N1 of the body 110A (the pipeline connector 120B is assembled on the first end N1 of the body 110B). In this embodiment, each of the pipeline connectors 120A, 120B has an inlet E1 , a first outlet E2 and a second outlet E3 . Here, the control valves 130A and 130B are, for example, two-position three-way solenoid valves. The control valve 130A is assembled on the pipeline joint 120A (the control valve 130B is assembled on the pipeline joint 120B) and controls the inlet E1, the first outlet E2 and the second outlet. The opening and closing of E3. After the first gas enters the main body 110A from the inlet E1, it is filtered through the molecular sieve filter material 115 to separate the second gas and the third gas. Here, the first gas is air Air, the second gas is oxygen O ₂ , and the third gas is nitrogen N ₂ . The same gas filtration and separation action also occurs in another gas concentration module G2. Predictably, in other unillustrated embodiments, those skilled in the art can use different types of molecular sieve filter materials to make the gas filter device of this embodiment filter and separate different gases.

Furthermore, during the process of producing oxygen (second gas), the inlet E1 and the first outlet E2 are controlled to be opened, and the second outlet E3 is controlled to be closed, so that the first gas (air) flows into the main body 110A (The same is true for the main body 110B, which will not be described again), and the oxygen sieved out by the molecular sieve filter material 115 can flow out from the first outlet E2. In the nitrogen exhaust process, contrary to the above, that is, the inlet E1 and the first outlet E2 are controlled to be closed, and the second outlet E3 is controlled to be opened.

Please refer to FIG. 1 and FIG. 3 again. In another not-shown embodiment, the above-mentioned control valve 130A or 130B can also be replaced by a two-way solenoid valve and a switch, wherein the two-way solenoid valve is connected and controls the inlet E1 and the first The opening and closing of the second exit E3, and the switch is connected to and controls the opening and closing of the first exit E2. In other words, as shown in FIG. 3 , the independent structural feature of the pipeline connector 120A for allowing the second gas (oxygen O ₂ ) to exit the main body 110A can be opened and closed as an independent outlet. This allows this implementation to maintain the above-mentioned state of "the gas pressure must be maintained above a certain value", so as to facilitate the filtration and separation of the first gas in the main body 110A. It should also be mentioned that in this embodiment, the control valve is divided into a two-way solenoid valve and a switch, so the first gas in the main body 110A is filtered and separated to separate the second gas and the third gas, which can be respectively subjected to the second gas and the third gas. Through the control of the solenoid valve and the switch, while the second gas is discharged from the main body 110A through the first outlet E2, the third gas is also discharged from the main body 110A through the second outlet E3.

In addition, as shown in Figure 1, the gas enrichment device 100 also includes a storage tank 140 and an air compressor 150, wherein the storage tank 140 is connected to the first outlet E2 to collect the second gas discharged from the main body 110A, 110B, and the air compressor 150 connects the inlet E1 and the second outlet E3, wherein the air compressor 150 is used to compress the air in the external environment and send it into the main body 110A, 110B through the inlet E1, or the air compressor 150 is used to extract the main body 110A, 110B for the second time. Three gas, to extract the third gas remaining in the molecular sieve filter material 115 from the main body 110A, 110B. In another unillustrated embodiment, another storage tank can also be connected to the second outlet E3 to collect the third gas. Furthermore, when the aforementioned oxygen production process is performed, that is, when the inlet E1 and the first outlet E2 are opened, and the second outlet E3 is closed, the high-pressure air provided from the air compressor 150 can enter the main body 110A through the inlet E1, The oxygen is separated by the molecular sieve filter material 115 and enters the storage tank 140 through the first outlet E2. Here, this embodiment also includes a pressure regulating valve, which is used to limit the oxygen to pass through at a specific pressure, so that a positive pressure can be formed in the main body 110A to improve the separation effect of the molecular sieve filter material 115 . Correspondingly, when the inlet E1 and the first outlet E2 are closed, and the second outlet E3 is opened, the pressure of the main body 110A will decrease, allowing nitrogen to leave through the second outlet E3, or the air compressor 150 is used to force nitrogen gas from the main body 110A. 110A pumps out the nitrogen gas, and at the same time, it can also form a negative pressure in the body 110A, which is beneficial to the next oxygen production process (the oxygen production time is shortened due to the pressure difference, so as to improve the oxygen production efficiency).

FIG. 4 is an electrical relationship diagram of the gas concentrator in FIG. 1 . Please refer to FIGS. 2 to 4 at the same time. The gas enrichment device 100 also includes a control module 160, which is electrically connected to the control valves 130A, 130B (two-position three-way solenoid valve) and the air compressor 150, as in the other embodiment described above. The two-way solenoid valve and the switch are electrically connected to facilitate related operations, as described later.

Take the control valves 130A and 130B such as two-position three-way solenoid valves as an example. When the control valves 130A and 130B are controlled by the control module 160 to open the inlet E1 and the first outlet E2 and close the second outlet E3, the second A gas (air Air) enters the main body 110A, 110B through the inlet E1 (and is air compressed by the air compressor 150 as mentioned above), and is filtered by the molecular sieve filter material 115 to retain oxygen. As shown in Figure 3, after the compressed air enters the main body 110A, 110B from the first end N1, it will pass through these mesh sheets made of molecular sieve filter material 115 sequentially from top to bottom, so that these mesh sheets Adsorb the nitrogen in the air, so the oxygen in the air will be suppressed and sent to the second end N2 of the body 110B, and when entering the space where the opening of the conduit 114 passes through the last of these meshes, it will be Oxygen can enter the conduit 114 smoothly. At this time, since the second outlet E3 remains closed, the pressure in the main body 110A can be effectively maintained to ensure the filtration and separation. When the second gas (oxygen O ₂ ) exits the bodies 110A, 110B through the conduit 114 and the first outlet E2 , and thus is sent and collected to the storage tank 140 , this is the oxygen production mode of the gas concentrator 100 . In contrast, when the control valves 130A and 130B close the inlet E1 and the first outlet E2 and open the second outlet E3, the third gas (nitrogen N ₂ ) adsorbed and blocked by the molecular sieve filter material 115 during the aforementioned oxygen production process will be The main bodies 110A, 110B can be discharged through the second outlet E3 due to the suction of the air compressor 150 , which is the nitrogen exhaust mode of the gas concentrator 100 .

Based on the above, since the inlet E1, the first outlet E2 and the second outlet E3 of the pipeline joints 120A, 120B are located at the first end N1 of the main body 110A, 110B, the structure of the gas concentrator 100 can be effectively simplified, that is, the Since the gas enters and exits at the first end N1, the main bodies 110A, 110B can be maintained and disassembled from the second end N2 without affecting the pipeline structures 120A, 120B and the control valves 130A, 130B. Moreover, since the top cover 111 and the bottom cover 113 are combined with the cylindrical wall 112 by a screw connection structure, it is also convenient for the user to disassemble and assemble the main bodies 110A and 110B. In other words, the present invention effectively simplifies the assembly and disassembly mechanism of the gas concentration device 100 , and the user does not need to have special industrial skills to disassemble and assemble smoothly, thus indirectly improving the application degree of the nutrient concentration device 100 in the consumer market.

FIG. 5 is a schematic diagram of the operation relationship of the gas enrichment device in FIG. 1 . Please refer to FIG. 5 , the actuation state to be described here is only an example. As shown above in this embodiment, the main bodies 110A, 110B, the pipeline connectors 120A, 120B and the control valves 130A, 130B of the gas concentrating mechanism 100 all have the same structure, so different modes can be adjusted accordingly according to requirements. As shown in FIG. 5 , the oxygen enrichment device 100 can be further divided into two gas enrichment modules G1 and G2 , and the user can issue the same or different commands to the gas enrichment modules G1 and G2 through the control module 160 .

For example, the control module 160 sends a command to the control valve 130A to make the gas enrichment module G1 in the oxygen generation mode, and at the same time, the control module 160 sends a command to the control valve 130B to make the gas enrichment module G2 in the nitrogen exhaust mode. Accordingly, the alternate operation state can be generated and can be changed according to the demand at any time (switching between the oxygen generating mode and the nitrogen exhausting mode), thereby improving the working efficiency of the oxygen concentrator 100 . Similarly, when the oxygen enrichment device includes multiple gas enrichment modules, it can provide users with more efficient oxygen production requirements according to their needs. As in the above-mentioned embodiment where the control valve includes a two-way solenoid valve and a switch, in addition to enabling the control module 160 to control the pipeline joints to achieve the required opening and closing effect in the single gas enrichment module G1 or G2, it can also be used as The above control of multiple gas enrichment modules enables the gas enrichment device to have multiple driving modes.

Fig. 6 is a partial structural schematic diagram of a gas enrichment device according to another embodiment of the present invention. Please refer to Fig. 6, the same as the previous embodiment, the gas enrichment device also includes two gas enrichment modules G1, G2, but the difference is that the pipeline joints of the two gas enrichment modules G1, G2 are integrated In other words, the inlet E1, the first outlet E2, and the second outlet E3 belonging to different gas enrichment modules G1 and G2 form an integrated structure by integrating the structure 223, which is conducive to improving the structural strength and is also convenient to use. The user disassembles and assembles the main bodies 110A, 110B.

To sum up, in the above-mentioned embodiment of the present invention, after filling the molecular sieve filter material in the main body, the pipeline joint is assembled on the first end of the main body, so that the inlet of the pipeline joint, the first outlet and the second The outlet communicates with the inner space of the body, and then when the control valve is assembled between the pipe joint and the first end, the opening and closing of the above-mentioned inlet, the first outlet and the second outlet can be controlled. In this way, when the inlet is opened and the first outlet and the second outlet are closed, the first gas can enter the body through the inlet, so that the molecular sieve filter material can separate the first gas into the second gas and the third gas, When the outlet or the second outlet is opened, the second gas is discharged from the body through the first outlet, or the third gas is discharged from the body through the second outlet.

Furthermore, the control valve can use a two-position three-way solenoid valve to control the opening and closing of the above three inlets (inlet, first outlet, and second outlet) according to the structure of the pipe joint, or use a two-way solenoid valve with a switch Control the opening and closing of the above three entrances and exits respectively. No matter which one is selected, it can be ensured that in the process of gas filtration and separation, the gas pressure in the main body can reach a certain value, so that the process of gas filtration and separation can be carried out smoothly. Once the gas filtration and separation is completed, the first outlet and the second outlet can be respectively opened to discharge the required second gas and third gas out of the body and collect them.

The above arrangement effectively simplifies the structure of the gas concentrator, that is, the gas enters and exits at the first end, so the main body can be repaired and disassembled from the second end without affecting the pipeline structure and solenoid valve. Furthermore, since the top cover and the bottom cover are combined with the cylindrical wall through a screw connection structure, it is also convenient for the user to disassemble and assemble the main body. In addition, the gas enrichment device can also be equipped with gas enrichment modules, and through the adjustment of the control modules, these gas enrichment modules can be switched to different working modes according to requirements, thereby improving the operating efficiency of the gas enrichment device.

100: Gas enrichment device 110A, 110B: Body 111: Top cover 112: Cylindrical wall 113: Bottom cover 114: Conduit 115: Molecular sieve filter material 116: Elastic parts 117A, 117B, 117C, 117D: Sealing parts 120A, 120B: Pipeline Joints 130A, 130B: control valve 140: storage tank 150: air compressor 160: control module 223: integrated structure E1: inlet E2: first outlet E3: second outlet G1, G2: gas concentration module N1: second One end N2: second end Air: air O ₂ : oxygen N ₂ : nitrogen

FIG. 1 is a schematic diagram of a gas enrichment device according to an embodiment of the present invention. Fig. 2 is an exploded view of some components of the gas enrichment device in Fig. 1 . Fig. 3 is a cross-sectional view of some components of the gas concentrator in Fig. 1 . FIG. 4 is an electrical relationship diagram of the gas concentrator in FIG. 1 . FIG. 5 is a schematic diagram of the operation relationship of the gas enrichment device in FIG. 1 . Fig. 6 is a partial structural schematic diagram of a gas enrichment device according to another embodiment of the present invention.

100: Gas enrichment device

110A, 110B: body

120A, 120B: pipe joints

130A, 130B: control valve

140: storage tank

150: air compressor

E1: Entrance

E2: The first exit

E3: The second exit

G1, G2: Gas enrichment module

N1: first end

N2: the second end

Air: air

O ₂ : Oxygen

N ₂ : Nitrogen

Claims (10)

A gas enrichment device, comprising: a plurality of gas enrichment modules, each of which includes: a body filled with molecular sieve filter material, the body has a first end and a second end opposite to each other; a pipeline joint, Located at the first end, the pipeline joint has an inlet, a first outlet, and a second outlet respectively communicating with the body; and at least one control valve located between the first end and the pipeline joint and controlling the Opening and closing of at least one of the inlet, the first outlet and the second outlet, a first gas is suitable to enter the body through the inlet, and the molecular sieve filter material is used to filter the first gas to separate a second gas and For a third gas, the pipeline joints of the gas enrichment modules are of an integrated structure. A gas concentration device, comprising at least one gas concentration module, the gas concentration module includes a body, a pipeline joint and at least one control valve, the body is filled with molecular sieve filter material, the body has a first end opposite to each other and a The second end, the pipeline connector is located at the first end, the pipeline connector has an inlet, a first outlet and a second outlet respectively connected to the body, the control valve is located at the first end and the pipeline connector and controlling the opening and closing of at least one of the inlet, the first outlet and the second outlet, a first gas is suitable to enter the body through the inlet, and the first gas is separated by filtering the first gas through the molecular sieve filter material A second gas and a third gas, wherein the control valve is a two-position three-way solenoid valve, and the gas enrichment device further includes a control module electrically connected to the two-position three-way solenoid valve, and the first gas is air, the second gas is oxygen, the first The third gas is nitrogen, wherein the control module drives the two-position three-way solenoid valve to open the inlet and control the opening and closing of the first outlet and the second outlet, so that the air enters the body through the inlet and is filtered by the molecular sieve filter to separate the oxygen and the nitrogen, and discharge the oxygen out of the body through the first outlet, wherein the control module drives the two-position three-way solenoid valve to close the inlet and the first outlet and open the second outlet , to discharge the nitrogen out of the body through the second outlet. A gas concentration device, comprising at least one gas concentration module, the gas concentration module includes a body, a pipeline joint and at least one control valve, the body is filled with molecular sieve filter material, the body has a first end opposite to each other and a The second end, the pipeline connector is located at the first end, the pipeline connector has an inlet, a first outlet and a second outlet respectively connected to the body, the control valve is located at the first end and the pipeline connector and controlling the opening and closing of at least one of the inlet, the first outlet and the second outlet, a first gas is suitable to enter the body through the inlet, and the first gas is separated by filtering the first gas through the molecular sieve filter material A second gas and a third gas, wherein the at least one control valve includes a two-way solenoid valve and a switch, the two-way solenoid valve is connected and controls the opening and closing of the inlet and the second outlet, and the switch is connected and controls the first The opening and closing of an outlet, and the gas concentrator also includes a control module, which is electrically connected to the two-way solenoid valve and the switch, the first gas is air, the second gas is oxygen, and the third gas is Nitrogen, wherein the control module drives the two-way solenoid valve to open the inlet and close the second outlet, and the control module drives the switch to open the first outlet, so that the air enters the body through the inlet and is absorbed by the Molecular sieve filter material filters and separates the oxygen and the nitrogen, so that the oxygen is discharged from the body through the first outlet, wherein the control module drives The two-way solenoid valve opens the second outlet, and closes the inlet and the first outlet, so that the nitrogen gas is discharged from the body through the second outlet. A gas concentration device, comprising at least one gas concentration module, the gas concentration module includes a body, a pipeline joint and at least one control valve, the body is filled with molecular sieve filter material, the body has a first end opposite to each other and a The second end, the pipeline connector is located at the first end, the pipeline connector has an inlet, a first outlet and a second outlet respectively connected to the body, the control valve is located at the first end and the pipeline connector and controlling the opening and closing of at least one of the inlet, the first outlet and the second outlet, a first gas is suitable to enter the body through the inlet, and the first gas is separated by filtering the molecular sieve filter material A second gas and a third gas, wherein the gas concentration module further includes a conduit disposed in the body, the conduit is connected to the first outlet at the first end and extends to the second end, the first Two gases enter the conduit from the second end and exit the body through the first outlet. The gas concentrator as claimed in claim 1, 2, 3 or 4, wherein after the second gas is discharged from the body through the first outlet, the third gas is also discharged from the body through the second outlet. The gas concentrator as claimed in item 4, wherein the molecular sieve filter material includes a plurality of mesh sheets sequentially stacked from the first end to the second end, the conduit passes through the mesh sheets, and the gas concentration module also An elastic member is included, the mesh abutting against the second end is between the body and the mesh abutting the elastic member is the last of the meshes. The gas enrichment device as claimed in claim 1, 2, 3 or 4, further comprising an air compressor connected to the inlet of the at least one gas enrichment module to pressurize and deliver the first gas into the body through the inlet . The gas concentrating device as claimed in claim 1, 2, 3 or 4, further comprising an air compressor connected to the second outlet of the at least one gas concentrating module, so as to extract the first gas from the main body through the second outlet Three gases. The gas enrichment device as claimed in claim 1, 2, 3 or 4 further comprises a storage tank connected to the first outlet of the at least one gas enrichment module to collect the second gas or the third gas. The gas concentrating device as described in claim 1, 3 or 4, wherein the control valve is a two-position three-way solenoid valve, and the gas concentrating device further includes a control module electrically connected to the two-position three-way solenoid valve, The first gas is air, the second gas is oxygen, and the third gas is nitrogen, wherein the control module drives the two-position three-way solenoid valve to open and close the inlet and the second outlet so that the air Enter the body through the inlet and be filtered by the molecular sieve filter to separate the oxygen and the nitrogen, and discharge the oxygen out of the body through the first outlet, wherein the control module drives the two-position three-way solenoid valve to close the inlet connecting the first outlet and opening the second outlet, so that the nitrogen gas is discharged from the body through the second outlet.

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