Nitrogen-oxygen separation device

Abstract

The utility model relates to a nitrogen-oxygen separation device, which comprises a shell and a gas separation assembly, the shell comprises a front cover and a rear cover, the front cover and the rear cover are separated and define a space, the gas separation assembly is arranged in the space, and the gas separation assembly comprises a front part arranged close to the front cover, a rear part arranged close to the rear cover and an electrochemical assembly arranged between the front part and the rear part. The electrochemical component comprises a cathode current collector, an anode current collector and an electrolytic reaction film between the cathode current collector and the anode current collector.

Description

TECHNICAL FIELD

[0001] The utility model relates to a nitrogen-oxygen separation device, in particular to a portable nitrogen-oxygen separation device. BACKGROUND

[0002] The separation technology of nitrogen and oxygen is applied to different fields such as plastic forming, metallurgy, analysis instrument, pharmaceutical or food and beverage application, the existing nitrogen and oxygen separation method mainly utilizes nitrogen separation membrane and pressure swing adsorption (PSA), the nitrogen separation membrane utilizes a plurality of gas molecule permeable fiber membrane walls to separate air, the speed is slow and the purity of the output gas is low. The pressure swing adsorption separates nitrogen and oxygen by adsorbing and desorbing different gas molecules in air by adsorbents (such as zeolite, activated carbon, molecular sieve), this method needs to design two or more adsorption towers, one adsorption tower actively separates nitrogen, the other adsorption tower produces oxygen when nitrogen passes, therefore the equipment required by the pressure swing adsorption method is more complex and difficult to apply to portable devices. On the other hand, the conventional portable nitrogen-oxygen separation device cannot cope with the separation of a large amount of gas.

[0003] Therefore, how to reduce the nitrogen-oxygen separation device and solve the problem that the portable nitrogen-oxygen separation device cannot cope with the separation of a large amount of gas is a problem that those skilled in the art urgently want to solve. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to reduce the nitrogen-oxygen separation device and solve the problem that the portable nitrogen-oxygen separation device cannot cope with the separation of a large amount of gas.

[0005] The utility model discloses a nitrogen-oxygen separation device, including a casing and a gas separation component. The casing includes a front cover and a rear cover, the front cover is separated from the rear cover and defines a space, the gas separation component is arranged in the space.

[0006] The gas separation component includes a front part arranged close to the front cover, a rear part arranged close to the rear cover and an electrochemical component arranged between the front part and the rear part.

[0007] The front part includes a first plate body, a first gas pipeline for introducing air and a second gas pipeline for leading out nitrogen, the first gas pipeline includes a first inlet extending transversely outward from a side wall of the first plate body and a first perforation communicating with the first inlet and penetrating the first plate body to a reaction side along a thickness direction, the second gas pipeline includes a second perforation penetrating the first plate body along the thickness direction from the reaction side and a second outlet communicating with the second perforation and extending transversely outward from the side wall of the first plate body.

[0008] The rear member includes a second plate body, a third gas line for leading oxygen, and a fourth gas line for leading oxygen, the third gas line including a third perforation that penetrates the second plate body in the thickness direction from the reaction side, and a third outlet that communicates with the third perforation and extends laterally outward from a side wall of the second plate body, the fourth gas line including a fourth perforation that penetrates the second plate body in the thickness direction from the reaction side, and a fourth outlet that communicates with the fourth perforation and extends laterally outward from the side wall of the second plate body.

[0009] The electrochemical assembly includes a cathode current collector adjacent the first plate body and communicating the first gas line and the second gas line, an anode current collector adjacent the second plate body and communicating the third gas line and the fourth gas line, and an electrolytic reaction film between the cathode current collector and the anode current collector.

[0010] In an embodiment, the first plate body includes a first clamping groove formed toward the front cover along an edge of the first gas line and the second gas line, and the front cover includes a first clamping tenon formed toward the gas separation assembly and corresponding to the first clamping groove.

[0011] In an embodiment, the second plate body includes a second clamping groove formed toward the rear cover along an edge of the third gas line and the fourth gas line, and the rear cover includes a second clamping tenon formed toward the gas separation assembly and corresponding to the second clamping groove.

[0012] In an embodiment, the first inlet, the second outlet, the third outlet, and the fourth outlet are located on the same side of the gas separation assembly.

[0013] In an embodiment, the first plate body further includes a plurality of cathode flow field structures protruding toward the electrochemical assembly in the thickness direction.

[0014] In an embodiment, the cathode flow field structures contact the cathode current collector.

[0015] In an embodiment, the second plate body further includes a plurality of anode flow field structures protruding toward the electrochemical assembly in the thickness direction.

[0016] In an embodiment, the anode flow field structures contact the anode current collector.

[0017] In an embodiment, the front cover includes a plurality of first recesses corresponding to the first inlet and the second outlet.

[0018] In an embodiment, the rear cover includes a plurality of second recesses corresponding to the third outlet and the fourth outlet. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a combined schematic view of an embodiment of the present application;

[0020] Figure 2A and 2B is a disassembled schematic view of one embodiment of the present application;

[0021] Figure 3 is a schematic view of a first plate body viewed from a front cover toward an electrochemical assembly of one embodiment of the present application;

[0022] Figure 4 is a schematic view of a second plate body viewed from a rear cover toward an electrochemical assembly of one embodiment of the present application;

[0023] Figure 5 is a cross-sectional schematic view of one embodiment of the present application;

[0024] Figure 6 is a combined schematic view of another embodiment of the present application.

[0025]

Symbol Explanation

[0026] 1: nitrogen-oxygen separation device

[0027] 10: housing

[0028] 11: front cover

[0029] 111: first dowel

[0030] 112: first groove

[0031] 12: rear cover

[0032] 121: second dowel

[0033] 122: second groove

[0034] 20: gas separation assembly

[0035] 30: front member

[0036] 30a: reaction side

[0037] 31: first plate body

[0038] 310: first body

[0039] 310a: first side end

[0040] 310b: second side end

[0041] 311: gas inlet pipe wall

[0042] 311a: gas inlet end

[0043] 311b: tail end

[0044] 311c: first section

[0045] 311d: second section

[0046] 311e: third section

[0047] 312: exhaust pipe wall

[0048] 312a: exhaust end

[0049] 312b: tail end

[0050] 312c: first section

[0051] 312d: second section

[0052] 312e: third section

[0053] 313: intake perforation

[0054] 314: exhaust perforation

[0055] 315: first clamping slot

[0056] 316: cathode flow field structure

[0057] 32: first gasket

[0058] 33: first O-ring

[0059] 341, 342: joint

[0060] 351: first perforation

[0061] 352: second perforation

[0062] 40: rear part

[0063] 40a: reaction side

[0064] 41: second plate body

[0065] 410: second body

[0066] 410a: first side end

[0067] 410b: second side end

[0068] 411: first exhaust pipe wall

[0069] 411a: exhaust end

[0070] 411b: tail end

[0071] 411c: first section

[0072] 411d: second section

[0073] 411e: third section

[0074] 412: second exhaust pipe wall

[0075] 412a: exhaust end

[0076] 412b: tail end

[0077] 412c: first section

[0078] 412d: second section

[0079] 412e: third section

[0080] 413: first exhaust perforation

[0081] 414: second exhaust perforation

[0082] 415: second clamping slot

[0083] 416: anode flow field structure

[0084] 42: second gasket

[0085] 43: second O-ring

[0086] 441, 442: joint

[0087] 451: third perforation

[0088] 452: fourth perforation

[0089] 50: electrochemical assembly

[0090] 51: cathode current collector

[0091] 52: anode current collector

[0092] 53: electrolytic reaction film

[0093] 54: first gasket

[0094] 55: second gasket

[0095] 60, 61: locking member DETAILED DESCRIPTION

[0096] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0097] As used herein, the directional terms, such as upper, lower, left, right, front, rear, and derivatives thereof or similar terms, relate to the orientation of the elements in the attached drawings and are not limiting of the present disclosure unless the context clearly indicates otherwise. The detailed description and technical content of the present disclosure are now described in conjunction with the attached drawings as follows:

[0098] Referring to Figures 1 to 4 The utility model discloses a nitrogen oxygen separation device 1, including a casing 10 and a gas separation component 20. The casing 10 includes a front cover 11 and a rear cover 12, the front cover 11 with the rear cover 12 is apart and defines a space, the gas separation component 20 is arranged in the space, the front cover 11, the gas separation component 20 and the rear cover 12 are sequentially stacked from front to back (along the Y axis) and are fixed by a plurality of locking pieces 60 and are assembled into the nitrogen oxygen separation device 1. Figure 1

[0099] The gas separation component 20 includes a front part 30, a rear part 40 and an electrochemical component 50, the front part 30 is close to the front cover 11 setting, the rear part 40 is close to the rear cover 12 setting, the electrochemical component 50 is arranged between the front part 30 and the rear part 40, the front part 30 and the rear part 40 adjacent to the side of electrochemical component 50 respectively define a reaction side 30a, 40a.

[0100] The front part 30 includes a first plate body 31, a first gasket 32 and a first O ring 33.

[0101] The first plate body 31 includes a first body 310, a gas inlet pipe wall 311, a gas outlet pipe wall 312, a gas inlet perforation 313 and a gas outlet perforation 314, the first body 310 is along the XZ plane extension and forms a flat plate, the gas inlet pipe wall 311 and the gas outlet pipe wall 312 are protruded from the first body 310 along a thickness direction (that is, the Y axis direction in the drawing) and define a first transverse flow channel and a second transverse flow channel respectively.

[0102] The gas inlet pipe wall 311 includes a gas inlet end 311a and a tail end 311b, respectively located at a first side end 310a and a second side end 310b of the first body 310, the gas inlet end 311a is connected to a connector 341 to receive air, the tail end 311b is a closed end, a first perforation 351 is arranged in the first body 310 in the first transverse flow channel of the gas inlet pipe wall 311 and penetrates the first body 310 to the reaction side 30a along the thickness direction, in this way, the air entering from the connector 341 will first pass through the first transverse flow channel of the gas inlet pipe wall 311, and then pass through a first longitudinal flow channel defined by the first perforation 351 to enter the reaction side 30a.

[0103] ​The intake pipe wall 311 includes a first section 311c, a second section 311d, and a third section 311e, the second section 311d is connected between the first section 311c and the third section 311e, the first section 311c and the third section 311e are substantially parallel to the X-axis, and the second section 311d is curved. In this embodiment, the intake pipe wall 311 is arranged close to a top end of the first body 310, and a center of a circular arc of the second section 311d coincides with a geometric center of the first body 310.

[0104] The exhaust pipe wall 312 includes an exhaust end 312a and a tail end 312b, which are located at the first side end 310a and the second side end 310b of the first body 310, respectively, the exhaust end 312a is connected to a joint 342 to discharge nitrogen gas, and the tail end 312b is a closed end. A second perforation 352 is arranged in the first body 310 in the first transverse flow channel of the exhaust pipe wall 312 and penetrates the first body 310 along the thickness direction to the reaction side 30a, so that the air generating nitrogen in the reaction side 30a first enters the second longitudinal flow channel defined by the second perforation 352 into the second transverse flow channel of the exhaust pipe wall 312, and then is discharged through the exhaust end 312a.

[0105] The exhaust pipe wall 312 includes a first section 312c, a second section 312d, and a third section 312e, the second section 312d is connected between the first section 312c and the third section 312e, the first section 312c and the third section 312e are substantially parallel to the X-axis, and the second section 312d is curved. In this embodiment, the exhaust pipe wall 312 is arranged close to a bottom end of the first body 310, and a center of a circular arc of the second section 312d coincides with a geometric center of the first body 310.

[0106] The rear member 40 includes a second plate body 41, a second gasket 42, and a second O-ring 43.

[0107] The second plate body 41 includes a second body 410, a first exhaust pipe wall 411, a second exhaust pipe wall 412, a first exhaust perforation 413, and a second exhaust perforation 414, the second body 410 is a flat plate extending along the XZ plane, the first exhaust pipe wall 411 and the second exhaust pipe wall 412 protrude from the second body 410 along the thickness direction (i.e. the Y-axis direction in the figure) and define a third transverse flow channel and a fourth transverse flow channel, respectively.

[0108] The first exhaust pipe wall 411 includes an exhaust end 411a and a tail end 411b located at a first side end 410a and a second side end 410b of the second body 410, respectively. The exhaust end 411a is connected to a joint 441 for discharging oxygen. The tail end 411b is a closed end. A third perforation 451 is disposed in the second body 410 in the third transverse flow channel of the first exhaust pipe wall 411 and penetrates the second body 410 in the thickness direction to the reaction side 40a. In this way, oxygen entering from the reaction side 40a first enters the third transverse flow channel of the first exhaust pipe wall 411 through a third longitudinal flow channel defined by the third perforation 451 and is then discharged through the exhaust end 411a.

[0109] The first exhaust pipe wall 411 includes a first section 411c, a second section 411d, and a third section 411e. The second section 411d is connected between the first section 411c and the third section 411e. The first section 411c and the third section 411e are substantially parallel to the X-axis. The second section 411d is curved. In this embodiment, the first exhaust pipe wall 411 is disposed close to a top end of the second body 410. A center of a circular arc of the second section 411d coincides with a geometric center of the second body 410.

[0110] The second exhaust pipe wall 412 includes an exhaust end 412a and a tail end 412b located at the first side end 410a and the second side end 410b of the second body 410, respectively. The exhaust end 412a is connected to a joint 442 for discharging oxygen. The tail end 412b is a closed end. A fourth perforation 452 is disposed in the second body 410 in the fourth transverse flow channel of the second exhaust pipe wall 412 and penetrates the second body 410 in the thickness direction to the reaction side 40a. In this way, oxygen entering from the reaction side 40a first enters the fourth transverse flow channel of the second exhaust pipe wall 412 through a fourth longitudinal flow channel defined by the fourth perforation 452 and is then discharged through the exhaust end 412a.

[0111] The second exhaust pipe wall 412 includes a first section 412c, a second section 412d, and a third section 412e. The second section 412d is connected between the first section 412c and the third section 412e. The first section 412c and the third section 412e are substantially parallel to the X-axis. The second section 412d is curved. In this embodiment, the second exhaust pipe wall 412 is disposed close to a bottom end of the second body 410. A center of a circular arc of the second section 412d coincides with a geometric center of the second body 410.

[0112] In this embodiment, the gas inlet hole 313 and the gas outlet hole 314 are located at the first side end 310a, and the first gas outlet hole 413 and the second gas outlet hole 414 are located at the first side end 410a, so that the gas inlet hole 313, the gas outlet hole 314, the first gas outlet hole 413 and the second gas outlet hole 414 are located at the same side wall of the gas separation assembly 20.

[0113] The front cover 11 cooperates with the gas inlet wall 311 and the gas outlet wall 312 to define a first gas pipe and a second gas pipe, respectively, and the rear cover 12 cooperates with the first gas outlet wall 411 and the second gas outlet wall 412 to define a third gas pipe and a fourth gas pipe, respectively.

[0114] The first gas pipe includes a first inlet defined by the gas inlet hole 313 and the joint 341, and the second gas pipe includes a second outlet defined by the gas outlet hole 314 and the joint 342, and the first inlet and the second outlet extend laterally outward from a side wall of the first plate body 31.

[0115] The third gas pipe includes a third outlet defined by the first gas outlet hole 413 and the joint 441, and the fourth gas pipe includes a fourth outlet defined by the second gas outlet hole 414 and the joint 442, and the third outlet and the fourth outlet extend laterally outward from a side wall of the second plate body 41.

[0116] The electrochemical assembly 50 includes a cathode current collector 51, an anode current collector 52, an electrolytic reaction film 53, a first gasket 54 and a second gasket 55, the cathode current collector 51 is adjacent to the first plate body 31 and located at the reaction side 30a, the cathode current collector 51 communicates the first gas pipe and the second gas pipe through the first hole 351 and the second hole 352. The anode current collector 52 is adjacent to the second plate body 41 and located at the reaction side 40a, the anode current collector 52 communicates the third gas pipe and the fourth gas pipe through the third hole 451 and the fourth hole 452, the electrolytic reaction film 53 is between the cathode current collector 51 and the anode current collector 52, the first gasket 54 is between the cathode current collector 51 and the electrolytic reaction film 53, and the second gasket 55 is between the anode current collector 52 and the electrolytic reaction film 53.

[0117] The electrolytic reaction film 53 of the electrochemical assembly 50 includes a cathode and an anode, and the cathode of the electrolytic reaction film 53 reacts with oxygen in the air according to the following formula (1) and discharges the remaining nitrogen:

[0118] O2+4H + +4e - →2H2O (1)

[0119] The anode of the electrolytic reaction film 53 of the electrochemical assembly 50 performs the following reaction (2):

[0120] 2H2O→O2+4H + +4e - (2)

[0121] In one embodiment, when performing reactions (1) and (2), an electric power less than 1.2V is supplied to the electrochemical assembly 50.

[0122] Referring to FIGS. 2 to Figure 5 The first plate body 31 includes a first clamping groove 315 and a plurality of cathode flow field structures 316. The first clamping groove 315 is formed along an edge of the first gas conduit and the second gas conduit in the thickness direction toward the front cover 11.

[0123] The front cover 11 includes a first clamping tenon 111 and a plurality of first recesses 112. The first clamping tenon 111 is formed toward the gas separation assembly 20 and is arranged corresponding to the first clamping groove 315. When the nitrogen-oxygen separation device 1 is in an assembled state, the first clamping tenon 111 is inserted into the first clamping groove 315, and the first gasket 32 is interposed between the first clamping groove 315 and the first clamping tenon 111 to seal the first gas conduit and the second gas conduit. The first recesses 112 are arranged corresponding to the first inlet and the second outlet (the joints 341, 342).

[0124] The cathode flow field structures 316 protrude in the thickness direction toward the electrochemical assembly 50 and contact the cathode current collector 51, so that the air flow entering the reaction side 30a is uniformly distributed. The first O-ring 33 is arranged on the reaction side 30a and surrounds the cathode flow field structures 316 to prevent gas overflow.

[0125] The second plate body 41 includes a second clamping groove 415 and a plurality of anode flow field structures 416. The second clamping groove 415 is formed along an edge of the third gas conduit and the fourth gas conduit in the thickness direction toward the rear cover 12.

[0126] The rear cover 12 includes a second clamping tenon 121 and a plurality of second recesses 122. The second clamping tenon 121 is formed toward the gas separation assembly 20 and is arranged corresponding to the second clamping groove 415. When the nitrogen-oxygen separation device 1 is in an assembled state, the second clamping tenon 121 is inserted into the second clamping groove 415, and the second gasket 42 is interposed between the second clamping groove 415 and the second clamping tenon 121 to seal the third gas conduit and the fourth gas conduit. The second recesses 122 are arranged corresponding to the third outlet and the fourth outlet (the joints 441, 442).

[0127] The anode flow field structure 416 protrudes along the thickness direction towards the electrochemical assembly 50 and contacts the anode current collector 52, so that the oxygen flow generated from the reaction side 40a is evenly distributed. The second O-ring 43 is arranged on the reaction side 40a and surrounds the anode flow field structure 416, so as to prevent gas overflow.

[0128] Referring to Figure 6 In an embodiment, a plurality of the nitrogen-oxygen separation devices 1 (three are shown as an example) are stacked and fixed by the locking members 61 to form a modular nitrogen-oxygen separation device to meet the demand for nitrogen-oxygen separation of a large amount of air.

[0129] In summary, compared with the conventional electrochemical separation method, the metal sheet is used for electrochemical reaction in the present application, which is conducive to lightweight design, and the size of the nitrogen-oxygen separation device can be reduced compared with the device using the pressure swing adsorption method, thereby achieving the effect of convenient carrying. On the other hand, the nitrogen-oxygen separation devices can be stacked and fixed by the locking members to form a modular nitrogen-oxygen separation device, thereby meeting the demand for nitrogen-oxygen separation of a large amount of air.

Claims

1. A nitrogen-oxygen separation device, characterized by, The application relates to a gas separation assembly. The gas separation assembly comprises: a front part disposed close to the front cover, comprising a first plate body, a first gas pipeline for leading in air, and a second gas pipeline for leading out nitrogen, the first gas pipeline comprising a first inlet extending transversely outward from a side wall of the first plate body and a first perforation communicating with the first inlet and penetrating the first plate body along a thickness direction to a reaction side, and the second gas pipeline comprising a second perforation penetrating the first plate body along the thickness direction from the reaction side and a second outlet communicating with the second perforation and extending transversely outward from the side wall of the first plate body; a rear part disposed close to the rear cover, comprising a second plate body, a third gas pipeline for leading out oxygen, and a fourth gas pipeline for leading out oxygen, the third gas pipeline comprising a third perforation penetrating the second plate body along the thickness direction from the reaction side and a third outlet communicating with the third perforation and extending transversely outward from a side wall of the second plate body, and the fourth gas pipeline comprising a fourth perforation penetrating the second plate body along the thickness direction from the reaction side and a fourth outlet communicating with the fourth perforation and extending transversely outward from the side wall of the second plate body; and an electrochemical assembly disposed between the front part and the rear part, comprising a cathode current collector adjacent to the first plate body and communicating with the first gas pipeline and the second gas pipeline, an anode current collector adjacent to the second plate body and communicating with the third gas pipeline and the fourth gas pipeline, and an electrolytic reaction film between the cathode current collector and the anode current collector. The first plate body comprises a first clamping groove formed towards the front cover along an edge of the first gas pipeline and the second gas pipeline, and the front cover comprises a first clamping tenon formed towards the gas separation assembly and corresponding to the first clamping groove. The second plate body comprises a second clamping groove formed towards the rear cover along an edge of the third gas pipeline and the fourth gas pipeline, and the rear cover comprises a second clamping tenon formed towards the gas separation assembly and corresponding to the second clamping groove.

2. The device of claim 1, wherein, The first inlet, the second outlet, the third outlet and the fourth outlet are located on the same side of the gas separation assembly.

3. The device of claim 1, wherein, The first plate body further comprises a plurality of cathode flow field structures protruding towards the electrochemical assembly along the thickness direction.

4. The device of claim 1, wherein, The cathode flow field structures contact the cathode current collector.

5. The device of claim 1, wherein, The second plate body further comprises a plurality of anode flow field structures protruding towards the electrochemical assembly along the thickness direction.

6. The device of claim 5, wherein, The anode flow field structures contact the anode current collector.

7. The device of claim 1, wherein, The front cover comprises a plurality of first grooves corresponding to the first inlet and the second outlet.

8. The device of claim 7, wherein, The rear cover comprises a plurality of second grooves corresponding to the third outlet and the fourth outlet.

9. The device of claim 1, wherein, ​ 10. The device of claim 1, wherein, ​

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