WO2022265297A1 - 연료전지 막가습기 - Google Patents
연료전지 막가습기 Download PDFInfo
- Publication number
- WO2022265297A1 WO2022265297A1 PCT/KR2022/008162 KR2022008162W WO2022265297A1 WO 2022265297 A1 WO2022265297 A1 WO 2022265297A1 KR 2022008162 W KR2022008162 W KR 2022008162W WO 2022265297 A1 WO2022265297 A1 WO 2022265297A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- case
- mid
- fuel cell
- hollow fiber
- cell membrane
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 88
- 210000000170 cell membrane Anatomy 0.000 title claims abstract description 49
- 239000012528 membrane Substances 0.000 claims abstract description 110
- 239000012510 hollow fiber Substances 0.000 claims abstract description 95
- 238000012856 packing Methods 0.000 claims abstract description 64
- 210000004027 cell Anatomy 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims description 37
- 229920005989 resin Polymers 0.000 claims description 25
- 239000011347 resin Substances 0.000 claims description 25
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 239000004417 polycarbonate Substances 0.000 claims description 8
- 229920000515 polycarbonate Polymers 0.000 claims description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 8
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 239000004925 Acrylic resin Substances 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 4
- 229920001875 Ebonite Polymers 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 229920006311 Urethane elastomer Polymers 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 239000007789 gas Substances 0.000 description 51
- 239000007788 liquid Substances 0.000 description 19
- 239000000565 sealant Substances 0.000 description 12
- 238000007789 sealing Methods 0.000 description 11
- 229920005749 polyurethane resin Polymers 0.000 description 10
- 239000005518 polymer electrolyte Substances 0.000 description 9
- 238000005266 casting Methods 0.000 description 8
- 239000004952 Polyamide Substances 0.000 description 6
- 239000004954 Polyphthalamide Substances 0.000 description 6
- 238000009750 centrifugal casting Methods 0.000 description 6
- 229920002647 polyamide Polymers 0.000 description 6
- 229920006375 polyphtalamide Polymers 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 238000004382 potting Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000011265 semifinished product Substances 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000000844 transformation Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04126—Humidifying
- H01M8/04149—Humidifying by diffusion, e.g. making use of membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04126—Humidifying
- H01M8/04141—Humidifying by water containing exhaust gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/04—Specific sealing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/04—Specific sealing means
- B01D2313/041—Gaskets or O-rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a fuel cell membrane humidifier, and more specifically, can prevent gas leakage due to repeated operation and stop of a fuel cell and can be manufactured with relatively low manufacturing cost and high productivity.
- the present invention relates to a fuel cell membrane humidifier capable of suppressing vibrations generated during operation.
- a fuel cell is a power-generating cell that produces electricity by combining hydrogen and oxygen. Unlike general chemical cells such as dry batteries and storage batteries, fuel cells have the advantage of being able to continuously produce electricity as long as hydrogen and oxygen are supplied, and having no heat loss, the efficiency is about twice that of an internal combustion engine.
- the fuel cell has the advantage of being environmentally friendly and reducing concerns about resource depletion due to increased energy consumption.
- PEMFC Polymer Electrolyte Membrane Fuel Cell
- PAFC Phosphoric Acid Fuel Cell
- MCFC Solid oxide fuel cell
- AFC alkaline fuel cell
- PEMFC polymer electrolyte fuel cell
- PEMFC polymer electrolyte fuel cell
- MEA membrane electrode assembly
- Methods for humidifying the polymer electrolyte membrane include 1) a bubbler humidification method in which water is supplied by passing the target gas through a diffuser after filling a pressure-resistant container with water, and 2) supplying moisture required for the fuel cell reaction. There are a direct injection method that calculates and directly supplies moisture to a gas flow pipe through a solenoid valve, and 3) a humidification membrane method that supplies moisture to a fluidized gas layer using a polymer membrane.
- a membrane humidification method in which a polymer electrolyte membrane is humidified by providing water vapor to air supplied to a polymer electrolyte membrane using a membrane that selectively transmits only water vapor contained in exhaust gas is advantageous in that it can reduce the weight and size of the humidifier.
- the selective permeable membrane used in the membrane humidification method is preferably a hollow fiber membrane having a large permeable area per unit volume when forming a module.
- a humidifier is manufactured using a hollow fiber membrane, high integration of the hollow fiber membrane with a large contact surface area is possible, so that even a small volume of fuel cell can be sufficiently humidified, low-cost materials can be used, and high-temperature emission from the fuel cell is possible. It has the advantage that it can be reused through a humidifier by recovering the moisture and heat contained in the off-gas.
- a conventional membrane humidification type humidifier 1000 includes a humidification module 1100 and a humidification module in which moisture is exchanged between air supplied from the outside and exhaust gas discharged from a fuel cell stack (not shown). It includes caps 1200 coupled to both ends of 1100, respectively.
- One of the caps 1200 transfers air supplied from the outside to the humidifying module 1100, and the other transfers air humidified by the humidifying module 1100 to the fuel cell stack.
- the humidification module 1100 includes a mid-case 1110 and a mid-case 1110 having an off-gas inlet 1110a and an off-gas outlet 1110b. It includes a plurality of hollow fiber membranes 1120 within. Both ends of the bundle of hollow fiber membranes 1120 are potted on the fixed layer 1130 .
- the fixed layer 1130 is generally formed by curing a liquid polymer such as a liquid polyurethane resin through a casting method (eg, dip casting or centrifugal casting).
- the exhaust gas contacts the outer surface of the hollow fiber membranes 1120, moisture contained in the exhaust gas permeates the hollow fiber membranes 1120, thereby humidifying the air flowing along the hollow of the hollow fiber membranes 1120.
- the inner spaces of the caps 1200 are in fluid communication only with the hollows of the hollow fiber membranes 1120, and must be completely blocked from the inner space of the mid-case 1110. Otherwise, gas leakage occurs due to the pressure difference, and the power generation efficiency of the fuel cell is lowered.
- the resin layer 1140 between the fixing layer 1130 and the mid-case 1110 along with the fixing layer 1130 fills the inner spaces of the caps 1200 with the mid-case 1110.
- the resin layer 1140 is generally formed by curing a liquid polymer such as liquid polyurethane resin through a casting method (deep casting or centrifugal casting).
- Korean Registered Patent No. 1697998 discloses a step on the side of the resin layer 1140 and an inner surface of the mid-case 1110. Disclosed is a method of applying a sealant (liquid sealing material) to the groove formed by the method, and then inserting a packing member (solid sealing material) into the groove and curing the sealant.
- the present invention can prevent problems caused by the limitations and disadvantages of the above related technologies, can surely prevent gas leakage due to repeated operation and stop of the fuel cell, as well as relatively low manufacturing cost and high productivity. It can be manufactured, and an object of the present invention is to provide a fuel cell membrane humidifier capable of suppressing vibrations generated during operation.
- the humidification module may include a mid-case with both ends open and a step formed on an inner circumferential surface; at least one cartridge disposed within the mid-case and accommodating a plurality of hollow fiber membranes; a fixing layer in which ends of the hollow fiber membranes are potted and supported by an inner wall of the mid-case; a bracket supported by the step of the mid-case and in contact with the fixing layer; and a packing member having a groove into which an end of the mid-case is fitted and contacting the bracket.
- the bracket and the packing member may each have a single closed curve shape corresponding to the cross-sectional shape of the mid-case.
- the bracket may have a higher hardness than the packing member.
- the bracket may have a hardness of 60 to 100 Shore A
- the packing member may have a hardness of 40 to 50 Shore A.
- the packing member may include soft rubber
- the bracket may include metal, hard plastic, or hard rubber.
- the packing member includes silicone rubber or urethane rubber
- the bracket is polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polycarbonate (PC), or an acrylic resin.
- the packing member may also contact the fixed layer.
- the fixing layer may include: a first fixing layer in which ends of the hollow fiber membranes are potted; and a second fixing layer that surrounds the first fixing layer and contacts the bracket.
- the first fixed layer and the second fixed layer may be formed of the same material.
- both the first fixed layer and the second fixed layer may include a polyurethane (PU) resin.
- PU polyurethane
- the humidification module further includes an inner case in which both ends are open in the mid-case, and the hollow fiber membranes may be disposed in the inner case there is.
- an end of the inner case may be potted on the first fixed layer.
- a protruding member inserted into the fixing layer and suppressing vibration generated in the cartridge by air flowing inside the humidifying module may be formed on an inner wall of the packing member there is.
- the humidifying module includes: a mid-case with both ends open and a step formed on an inner circumferential surface; at least one cartridge disposed within the mid-case and accommodating a plurality of hollow fiber membranes; a fixing layer in which ends of the hollow fiber membranes are potted and supported by an inner wall of the mid-case; a bracket supported by the step of the mid-case and in contact with the fixing layer; and a packing member having a groove into which an end of the mid-case is fitted and contacting the bracket.
- the hollow fiber membranes include a first group of hollow fiber membranes and a second group of hollow fiber membranes.
- the humidification module may include a first inner case in which the hollow fiber membranes of the first group are disposed; and a second inner case in which the second group of hollow fiber membranes are disposed, wherein the fixing layer includes: a first fixing layer in which ends of the first group of hollow fiber membranes are potted; a second fixing layer in which ends of the hollow fiber membranes of the second group are potted; and a third fixing layer that surrounds the first and second fixing layers and contacts the bracket.
- a protruding member inserted into the fixing layer and suppressing vibration generated in the cartridge by air flowing inside the humidifying module may be formed on an inner wall of the packing member there is.
- an end of the first inner case may be potted on the first fixed layer, and an end of the second inner case may be potted on the second fixed layer.
- the sealant application process and the sealant curing process required in the prior art are omitted, not only workability is improved, but also productivity can be dramatically improved by shortening the manufacturing time.
- gas leakage due to repeated operation and stop of the fuel cell can be prevented, and it can be manufactured with relatively low manufacturing cost and high productivity.
- a protruding member is formed on the inner wall (or inner surface) of the packing member to suppress vibration generated during driving, and to suppress the flow of air inside the mid-case to the cap to enhance the sealing function,
- a protruding member is formed on the inner wall (or inner surface) of the packing member to suppress vibration generated during driving, and to suppress the flow of air inside the mid-case to the cap to enhance the sealing function,
- FIG. 1 is an exploded perspective view showing a fuel cell membrane humidifier according to the prior art.
- FIG. 2 is a cross-sectional view showing a fuel cell membrane humidifier according to a first embodiment of the present invention.
- 3A is a perspective view of a bracket according to a first embodiment of the present invention.
- FIG. 3B is a cross-sectional view taken along line A-A of FIG. 3A.
- Figure 4a is a perspective view of the packing member according to the first embodiment of the present invention.
- FIG. 4B is a cross-sectional view taken along line A-A of FIG. 4A.
- FIG. 5 is a cross-sectional view showing a fuel cell membrane humidifier according to a second embodiment of the present invention.
- 6A to 6G are cross-sectional views for explaining a method of manufacturing a fuel cell membrane humidifier according to an embodiment of the present invention.
- FIGS. 2 and 5 to 6G are cross-sectional views of one end of the humidifier or semi-finished product, and the other end also has substantially the same (or symmetrical) cross-section.
- the fuel cell membrane humidifier 2000 of the present invention includes a humidification module 2100 that humidifies air supplied from the outside with moisture in the exhaust gas discharged from the fuel cell stack. Both ends of the humidifying module 2100 are fastened to the cap 2200, respectively.
- the caps 2200 receives air supplied from the outside through the port 2210 and transfers the air to the humidifying module 2100, and the other cap supplies the air humidified by the humidifying module 2100 to the fuel through the port 2210. delivered to the cell stack.
- the caps 2200 may be formed of hard plastic (eg, polycarbonate, polyamide (PA), polyphthalamide (PPA), etc.) or metal, and may be formed in a simple closed curveshaped (eg, polycarbonate, polyamide (PA), polyphthalamide (PPA), etc.) shape. It may have a cross section (circular or polygonal).
- one of the caps 2200 may supply exhaust gas to the humidifying module 2100 to flow inside the hollow fiber membrane, and the other may discharge the exhaust gas subjected to moisture exchange to the outside.
- external air is introduced through one of the ports 2111 for inflow/outflow of exhaust gas described later, and air humidified by the humidification module 2100 is supplied to the fuel cell stack through the other one can be made
- the flow direction of the outside air and the flow direction of the exhaust gas may be in the same direction or opposite to each other.
- the humidification module 2100 is a device in which moisture is exchanged between air supplied from the outside and exhaust gas supplied from a fuel cell stack, and both ends are open and have a step 2112 on the inner circumferential surface.
- the mid-case 2110 has ports 2111 (only one is shown in FIG. 2) for inflow/outflow of exhaust gas.
- the mid-case 2110 may be formed of a rigid plastic (eg, polycarbonate, polyamide (PA), polyphthalamide (PPA), etc.) or metal, and may be formed in the form of a single closed curve (eg, circular or polygonal shape). ) may have a cross section of According to one embodiment of the present invention, the mid-case 2110 may have the same cross section as the cap 2200 .
- the hollow fiber membranes 2121 may include polysulfone resin, polyethersulfone resin, sulfonated polysulfone resin, polyvinylidene fluoride (PVDF) resin, polyacrylonitrile (PAN) resin, polyimide resin, polyamideimide resin, polyesterimide resin, or a mixture of two or more of them. Air supplied from the outside through one cap 2200 is humidified while flowing along the hollows of the hollow fiber membranes 2121, and then delivered to the fuel cell stack through the other cap 2200.
- PVDF polyvinylidene fluoride
- PAN polyacrylonitrile
- Exhaust gas introduced into the mid-case 2110 comes into contact with the outer surfaces of the hollow fiber membranes 2121 and then is discharged from the mid-case 2110 .
- the exhaust gas contacts the outer surface of the hollow fiber membranes 2121, moisture contained therein permeates through the hollow fiber membranes 2121, thereby humidifying the air flowing along the hollow of the hollow fiber membranes 2121.
- the fixing layer 2122 which may be formed of a hard or soft polyurethane resin, provides an internal space of the cap 2200 to the inside of the mid-case 2110 so that the cap 2200 can communicate only with the hollow fiber membranes 2121. space must be blocked.
- Gas leakage that may be caused by the gap between the fixed layer 2122 and the mid-case 2110 is: (i) the exhaust gas in the inner space of the mid-case 2110 is separated from the fixed layer 2122 and the mid-case 2110 ) and external leakage passing through the gap between the cap 2200 and the mid-case 2110 sequentially to the outside of the humidifier 2000 and (ii) the internal space of the mid-case 2110 Internal leakage in which the exhaust gas in the interior sequentially passes through the gap between the fixed layer 2122 and the mid-case 2110 and the gap between the fixed layer 2122 and the cap 2200 and enters the internal space of the cap 2200 includes
- the fuel cell membrane humidifier 2000 of the present invention includes a bracket 2130, a packing member 2140, and a protruding member 2150 ) is further included.
- the bracket 2130 supported by the step 2112 of the mid-case 2110 may have a single closed curve shape corresponding to the cross-sectional shape of the mid-case 2110. .
- the bracket 2130 has a higher hardness than the packing member 2140 and is strongly adhered to the fixing layer 2122.
- the packing member 2140 is 30 to 60 Shore A so that the cap 2200 can be compressed by the pressure applied when the mid-case 2110 is fastened to the mid-case through the bolt 2310 and the nut 2320.
- it may have a relatively low hardness of 40 to 50 Shore A
- the bracket 2130 may have a hardness of 60 to 100 Shore A, more preferably 70 to 100 Shore A, which is higher than the hardness of the packing member 2140. may have hardness.
- the packing member 2140 having a groove G into which the end of the mid-case 2110 is fitted also has a single closed curve shape corresponding to the cross-sectional shape of the mid-case 2110. can have
- the packing member 2140 may include soft rubber (eg, silicone rubber or urethane rubber), and the bracket 2130 may include metal, hard plastic (eg, polypropylene).
- PP polypropylene
- PET polyethylene terephthalate
- PS polystyrene
- PC polycarbonate
- acrylic resin acrylic resin
- the portion of the packing member 2140 disposed between the cap 2200 and the mid-case 2110 [particularly , the portion of the packing member 2140 corresponding to the groove into which the end of the mid-case 2110 is inserted] is compressed by the pressure applied by the cap 2200 and the mid-case 2110, thereby forming a seal between the packing member 2140 and the mid-case.
- gas movement ie, external leakage
- the bracket 2130 is supported by the step 2112 of the mid-case 2110 and has a relatively high hardness
- the cap 2200 is connected to the mid-case via the bolt 2310 and the nut 2320.
- the bracket 2130 and the cap 2200 can effectively apply pressure to the packing member 2140.
- the portion of the packing member 2140 disposed between the cap 2200 and the bracket 2130 (that is, located inside the mid-case 2110) is sufficiently compressed, so that the gap between the packing member 2140 and the bracket 2130 is sufficiently compressed. It is possible to ensure excellent internal sealing by preventing the movement of gas through the interface of (ie, internal leakage).
- the bracket 2130 according to an embodiment of the present invention has excellent adhesion to the fixing layer 2122, thereby preventing the movement of gas through the interface between the bracket 2130 and the fixing layer 2122 (i.e., internal leakage). A stronger inner seal can be provided. If necessary, by treating the surface of the bracket 2130 with a primer, the adhesive strength between the bracket 2130 and the fixing layer 2122 can be further improved to maximize the internal sealing effect.
- the protruding member 2150 protrudes from the inner wall of the packing member 2140 toward the fixing layer 2122 .
- the protruding member 2150 may be formed in an annular ring shape surrounding the inner wall of the packing member 2140 .
- the protruding member 2150 may be inserted into the fixing layer 2122 in a pressurized manner.
- the protruding member 2150 may be inserted into the second fixing layer 2122-2. Of course, it may pass through the second fixed layer 2122-2 and be inserted into the first fixed layer 2122-1.
- the protruding member 2150 compresses the fixed layer 2122 while being fitted into the fixed layer 2122 in a pressurized manner, thereby suppressing the movement of air inside the mid-case 2110 toward the cap 2200, enabling tighter internal sealing. do.
- the protruding member 2150 can suppress vibration generated in the cartridge 2120 by air flowing inside the humidifying module 2100 by compressing the fixed layer 2122 while being inserted into the fixed layer 2122 in a pressurized manner. . That is, it is possible to suppress vibration of the cartridge 2120 in the Z-axis direction by the flow of dry air introduced through the port 2210 of the cap (shown in the Z-axis direction in FIG. 2 ).
- the protruding member 2150 protrudes from the inner wall of the mid-case 2110 toward the fixed layer 2122, it is possible to easily position the fixed layer when forming the fixed layer in the manufacturing process.
- the cap 2200 has a cap protrusion 2220 at a position corresponding to the end of the mid-case 2110 fitted into the groove of the packing member 2140.
- the cap protrusion 2220 enables tighter external sealing by more effectively compressing the packing member 2140 with the end of the mid-case 2110.
- the packing member 2140 may contact the fixed layer 2122 .
- the adhesive strength between the packing member 2140 and the fixing layer 2122 is improved by allowing the liquid resin (for example, liquid polyurethane resin) used to form the fixing layer 2122 to harden while in contact with the packing member 2140. and reinforce the inner seal.
- liquid resin for example, liquid polyurethane resin
- the fixed layer 2122 includes the first fixed layer 2122-1 and the first fixed layer 2122-1 in which ends of the hollow fiber membranes 2121 are potted. ) and may include a second fixing layer 2122-2 in contact with the bracket 2130.
- the first fixed layer 2122-1 and the second fixed layer 2122-2 may be respectively formed by curing a liquid resin such as liquid polyurethane resin through a deep casting method or a centrifugal casting method.
- the first fixing layer 2122-1 and the second fixing layer 2122-2 may be formed of different materials, but are preferably formed of the same material (for example, polyurethane resin) in terms of adhesive strength between them. can do.
- the humidifying module 2100 may further include an inner case 2123 with both ends open within the mid-case 2110 .
- the hollow fiber membranes 2121 are disposed within the inner case 2123 .
- the first fixing layer 2122 - 1 in which the distal ends of the hollow fiber membranes 2121 are potted closes the open ends of the inner case 2123 .
- the inner case 2123 has a plurality of holes H at positions corresponding to the ports 2111 (only one is shown in FIG. 2) for inflow/outflow of exhaust gas, respectively. .
- Exhaust gas introduced into the mid-case 2110 through the first port 2111 passes through the first holes H and then flows along the outer surfaces of the hollow fiber membranes 2121 to lose moisture. Subsequently, after exiting the inner case 2133 through the second holes H on the opposite side, it is discharged from the mid-case 2110 through the second port 2111.
- the hollow fiber membranes 2121 , the first fixing layer 2122 - 1 , and the inner case 2123 constitute the hollow fiber membrane cartridge 2120 .
- the fuel cell membrane humidifier 2000 As shown in FIG. 5, the fuel cell membrane humidifier 2000 according to the second embodiment of the present invention, except that it includes two hollow fiber membrane cartridges 2120a and 2120b, the above-described first It is substantially the same as the Example.
- the hollow fiber membranes include the first group of hollow fiber membranes 2121a and the second group of hollow fiber membranes 2121b
- the humidifying module 2100 includes the first group of hollow fiber membranes 2121a.
- a first inner case 2123a in which hollow fiber membranes 2121a are disposed and a second inner case 2123b in which a second group of hollow fiber membranes 2121b are disposed, and a fixed layer 2122 ) is the first fixed layer 2122-1a in which the ends of the first group of hollow fiber membranes 2121a are potted, and the second fixed layer 2122-1b in which the ends 2121b of the second group of hollow fiber membranes are potted. ), and a third fixing layer 2122-2 that contacts the bracket 2130 while surrounding the first and second fixing layers 2122-1a and 2122-1b.
- the first group of hollow fiber membranes 2121a, the first fixing layer 2122-1a, and the first inner case 2123a constitute the first hollow fiber membrane cartridge 2120a
- the second group of hollow fiber membranes 2121b ), the second fixed layer 2122-1b, and the second inner case 2123b constitute the second hollow fiber membrane cartridge 2120b.
- the ends of the first and second inner cases 2123a and 2123b are potted on the first and second fixing layers 2122-1a and 2122-1b, respectively, so that the first group of The relative positions of the hollow fiber membranes 2121a and the first inner case 2123a and the relative positions of the second group of hollow fiber membranes 2121b and the second inner case 2123b may be maintained constant.
- the number of hollow fiber membranes 2121 should be increased.
- the more the hollow fiber membranes 2121 the more difficult it is for the exhaust gas to be delivered to the hollow fiber membranes 2121 located in the center.
- the two hollow fiber membrane cartridges 2120a and 2120b are spaced apart from each other, even if the number of all hollow fiber membranes 2121a and 2121b increases, the exhaust gas is reduced to all hollow fiber membranes. (2121a, 2121b) can be transmitted relatively uniformly. That is, when the number of hollow fiber membranes is the same, the structure of the second embodiment including two hollow fiber membrane cartridges 2120a and 2120b is compared to the structure of the first embodiment including only one hollow fiber membrane cartridge 2120. It is advantageous in terms of desert utilization.
- the number of hollow fiber membrane cartridge(s) mounted in the mid-case 2110 may be determined by considering the capacity of the fuel cell (or required humidification capacity), the size of the humidifier, and the weight of the humidifier as a whole.
- a hollow fiber membrane cartridge 2120' in which ends of a plurality of hollow fiber membranes 2121' are potted on a first fixing layer 2122-1' is prepared.
- the hollow fiber membrane cartridge 2120' is formed by inserting at least a portion of each of the hollow fiber membranes 2121' into the inner case 2123 and then performing a deep casting process or a centrifugal casting process using a liquid resin such as liquid polyurethane resin. can be manufactured. Through curing of the liquid resin, the first fixing layer 2122-1' in which ends of the hollow fiber membranes 2121' are potted is formed. When the deep casting process or the centrifugal casting process is performed, the ends of the inner case 2123 may be potted together with the ends of the hollow fiber membranes 2121' on the first fixed layer 2122-1'.
- the inner case 2123 may have first and second groups of holes H located on opposite sides of each other along the longitudinal direction.
- a hollow fiber membrane cartridge 2120' is inserted into a mid-case 2110 having both ends open and a step 2112 formed on an inner circumferential surface.
- the mid-case 2110 has open ends and has a cross section in the form of a single closed curve.
- the mid-case 2110 may have a partition wall dividing its internal space into an exhaust gas inflow space and an exhaust gas discharge space located on opposite sides along the longitudinal direction, and the hollow fiber membrane cartridge 2120' is inserted into the hole formed in the partition wall. May be supported by partition walls.
- the holes H of the first group of the inner case 2123 exist in the exhaust gas inflow space
- the holes H of the second group of the inner case 2123 exist in the exhaust gas discharge space.
- the exhaust gas entering the exhaust gas inlet space is introduced into the inner case 2123 through the first group of holes H and flows toward the second group of holes H in the inner case 2123, The second group moves to the exhaust gas discharge space through the holes H, and is then discharged from the mid-case 2110.
- the bracket 2130 is mounted on the step 2112 of the mid-case 2110.
- the mid-case 2110 may have a single closed curve-shaped cross section
- the bracket 2130 may have a single closed curve shape corresponding to the cross-sectional shape of the mid-case 2110 .
- Bracket 2130 is a metal, hard plastic (eg, polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polycarbonate (PC), or acrylic resin), or hard rubber.
- PP polypropylene
- PET polyethylene terephthalate
- PS polystyrene
- PC polycarbonate
- acrylic resin acrylic resin
- the packing member 2140 having a groove corresponding to the end of the mid-case 2110 is inserted into the groove and the packing member 2140 is inserted into the end of the mid-case 2110. It is mounted on the end of the mid-case 2110 so that a part of it contacts the bracket 2130.
- the packing member 2140 may also have a single closed curve shape corresponding to the cross-sectional shape of the mid-case 2110 .
- a protrusion member 2150 is formed on the inner surface of the packing member 2140 .
- a second fixing layer 2122-2' filling the gap between the mid-case 2110, the bracket 2130, and the packing member 2140 and the end of the hollow fiber membrane cartridge 2120' ) to form
- the second fixing layer 2122-2' fastens a potting cap (not shown) to the mid-case 2110, and in a state where the potting cap is located under the mid-case 2110, the liquid polyurethane resin and the liquid polyurethane resin are added to the potting cap. It can be manufactured by performing a deep casting process in which the same liquid resin is injected and cured, and then removing the potting cap. Alternatively, the second fixed layer 2122-2' may be formed through a centrifugal casting process.
- the first and second fixing layers 2122-1' and 2122-2' may be composed of different liquid resins, but are each made of the same material (eg, liquid polyurethane resin) in terms of adhesive strength therebetween. It may be desirable to form
- the liquid resin (eg, liquid polyurethane) used to form the second fixing layer 2122-2' includes the bracket 2130, the packing member 2140, and the protrusion member 2150. ), it is possible to improve the adhesion of the second fixing layer 2122-2' to them and strengthen the internal sealing.
- the bracket 2130 is formed of a material having excellent adhesion to the second fixing layer 2122-2', gas movement through the interface between them (ie, internal leakage) is prevented. to provide a stronger inner seal.
- the bracket 2130 whose surface is treated with a primer as described above is used, the adhesive strength between the bracket 2130 and the second fixing layer 2122-2' is maximized, thereby providing better internal sealing.
- first fixed layer 2122-1', the second fixed layer 2122-2', and the hollow fiber membranes 2121' are simultaneously cut along the cutting line CL of FIG.
- hollow fiber membranes 2121 with open ends potted on the first fixed layer 2122-1 surrounded by the second fixed layer 2122-2 are obtained.
- the cap 2200 is fastened to the mid-case 2110, and the cap 2200 is fastened so that the packing member 2140 is compressed by the cap 2200.
- the cap 2200 has a cap protrusion 2220 at a position corresponding to the end of the mid-case 2110 fitted into the groove of the packing member 2140.
- the cap protrusion 2220 enables tighter external sealing by more effectively compressing the packing member 2140 with the end of the mid-case 2110.
- the bracket 2130 since the bracket 2130 has a higher hardness than the packing member 2140, the packing member 2140 is compressed when the cap 2200 is fastened to the mid-case 2110. can
- the bracket 2130 is not only supported by the step 2112 of the mid-case 2110, but also has a higher hardness (30 to 60 Shore A, more preferably 40 to 50 Shore A) of the packing member 2140. Since it has a hardness (60 to 100 Shore A, more preferably 70 to 100 Shore A), when the cap 2200 is fastened to the mid-case 2110 through the bolt 2310 and the nut 2320, the bracket ( 2130 can effectively apply pressure to the packing member 2140 together with the cap 2200. As a result, the portion of the packing member 2140 disposed between the cap 2200 and the bracket 2130 (that is, located inside the mid-case 2110) is sufficiently compressed, so that the gap between the packing member 2140 and the bracket 2130 is sufficiently compressed. It is possible to ensure excellent internal sealing by preventing the movement of gas through the interface of (ie, internal leakage).
- both external leakage and internal leakage can be effectively prevented through mechanical assembly of the bracket 2130 and the packing member 2140 without prior art sealant coating and curing processes. Therefore, according to the present invention, since the sealant application process and the sealant curing process required in the prior art are omitted, not only workability is improved, but also productivity can be dramatically improved by shortening the manufacturing time. In addition, since a separate space for storing semi-finished products is not required during the sealant curing process, the humidifier production cost can be reduced.
- the protruding member 2150 is formed on the inner wall of the packing member 2140 to suppress vibration generated during driving, and to suppress the flow of air inside the mid-case to the cap to enhance the sealing function. , When forming the fixed layer, it is possible to easily select the location of the fixed layer.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims (16)
- 외부로부터 공급되는 공기를 연료전지 스택으로부터 배출되는 배가스 내의 수분으로 가습하는 가습 모듈; 및,상기 가습 모듈의 양 말단들에 각각 결합된 캡들을 포함하되,상기 가습 모듈은,양 말단들이 개방되어 있으며 내주면에 단차가 형성된 미드-케이스;상기 미드-케이스 내에 배치되며 복수의 중공사막들을 수용하는 적어도 하나의 카트리지;상기 중공사막들의 말단들이 포팅되고 상기 미드-케이스 내벽에 의해 지지되는 고정층;상기 미드-케이스의 단차에 의해 지지되며 상기 고정층과 접촉하는 브라켓; 및,상기 미드-케이스의 말단이 끼워지는 홈을 가지며 상기 브라켓과 접촉하는 패킹부재;를 포함하는, 연료전지 막가습기.
- 청구항 1에 있어서, 상기 브라켓 및 상기 패킹부재는,상기 미드-케이스의 횡단면 형태에 대응하는 단일 폐곡선 형태를 각각 갖는, 연료전지 막가습기.
- 청구항 1에 있어서, 상기 브라켓은,상기 패킹부재보다 높은 경도를 갖는, 연료전지 막가습기.
- 청구항 3에 있어서,상기 브라켓은 60 내지 100 Shore A의 경도를 갖고, 상기 패킹부재는 40 내지 50 Shore A의 경도를 갖는, 연료전지 막가습기.
- 청구항 1에 있어서,상기 패킹부재는 연질 고무를 포함하고,상기 브라켓은 금속, 경질 플라스틱, 또는 경질 고무를 포함하는, 연료전지 막가습기.
- 청구항 5에 있어서,상기 패킹부재는 실리콘 고무 또는 우레탄 고무를 포함하고,상기 브라켓은 폴리프로필렌(PP), 폴리에틸렌테레프탈레이트(PET), 폴리스티렌(PS), 폴리카보네이트(PC), 또는 아크릴 수지를 포함하는, 연료전지 막가습기.
- 청구항 1에 있어서, 상기 패킹부재는,상기 고정층과도 접촉하는, 연료전지 막가습기.
- 청구항 1에 있어서, 상기 고정층은,상기 중공사막들의 말단들이 포팅되어 있는 제1 고정층; 및상기 제1 고정층을 감싸며 상기 브라켓과 접촉하는 제2 고정층를 포함하는, 연료전지 막가습기.
- 청구항 8에 있어서,상기 제1 고정층과 상기 제2 고정층은 동일한 물질로 형성된, 연료전지 막가습기.
- 청구항 8에 있어서,상기 제1 고정층과 상기 제2 고정층 모두는 폴리우레탄(PU) 수지를 포함하는, 연료전지 막가습기.
- 청구항 8에 있어서,상기 가습 모듈은 양 말단들이 개방된 이너 케이스(inner case)를 상기 미드-케이스 내에 더 포함하고,상기 중공사막들은 상기 이너 케이스 내에 배치되어 있는, 연료전지 막가습기.
- 청구항 11에 있어서,상기 이너 케이스의 말단은 상기 제1 고정층에 포팅되어 있는, 연료전지 막가습기.
- 청구항 1에 있어서,상기 패킹부재의 내벽에는 상기 고정층에 끼워져서 상기 가습 모듈 내부를 유동하는 공기에 의해 상기 카트리지에 발생하는 진동을 억제하는 돌기부재가 형성되는, 연료전지 막가습기.
- 외부로부터 공급되는 공기를 연료전지 스택으로부터 배출되는 배가스 내의 수분으로 가습하는 가습 모듈; 및,상기 가습 모듈의 양 말단들에 각각 결합된 캡들을 포함하되,상기 가습 모듈은,양 말단들이 개방되어 있으며 내주면에 단차가 형성된 미드-케이스;상기 미드-케이스 내에 배치되며 복수의 중공사막들을 수용하는 적어도 하나의 카트리지;상기 중공사막들의 말단들이 포팅되고 상기 미드-케이스 내벽에 의해 지지되는 고정층;상기 미드-케이스의 단차에 의해 지지되며 상기 고정층과 접촉하는 브라켓; 및,상기 미드-케이스의 말단이 끼워지는 홈을 가지며 상기 브라켓과 접촉하는 패킹부재를 포함하고,상기 중공사막들은 제1 그룹의 중공사막들 및 제2 그룹의 중공사막들을 포함하고,상기 가습 모듈은,상기 제1 그룹의 중공사막들이 내부에 배치되어 있는 제1 이너 케이스; 및상기 제2 그룹의 중공사막들이 내부에 배치되어 있는 제2 이너 케이스를 더 포함하며,상기 고정층은,상기 제1 그룹의 중공사막들의 말단들이 포팅되어 있는 제1 고정층;상기 제2 그룹의 중공사막들의 말단들이 포팅되어 있는 제2 고정층; 및상기 제1 및 제2 고정층들을 감싸며 상기 브라켓과 접촉하는 제3 고정층을 포함하는, 연료전지 막가습기.
- 청구항 14에 있어서,상기 패킹부재의 내벽에는 상기 고정층에 끼워져서 상기 가습 모듈 내부를 유동하는 공기에 의해 상기 카트리지에 발생하는 진동을 억제하는 돌기부재가 형성되는, 연료전지 막가습기.
- 청구항 14에 있어서,상기 제1 이너 케이스의 말단은 상기 제1 고정층에 포팅되어 있고,상기 제2 이너 케이스의 말단은 상기 제2 고정층에 포팅되어 있는, 연료전지 막가습기.
Priority Applications (3)
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CN202280042060.2A CN117480645A (zh) | 2021-06-17 | 2022-06-09 | 燃料电池膜加湿器 |
JP2023565326A JP2024515129A (ja) | 2021-06-17 | 2022-06-09 | 燃料電池の膜加湿器 |
EP22825222.7A EP4322267A1 (en) | 2021-06-17 | 2022-06-09 | Fuel cell membrane humidifier |
Applications Claiming Priority (2)
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KR10-2021-0078939 | 2021-06-17 | ||
KR1020210078939A KR20220168893A (ko) | 2021-06-17 | 2021-06-17 | 연료전지 막가습기 |
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WO2022265297A1 true WO2022265297A1 (ko) | 2022-12-22 |
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PCT/KR2022/008162 WO2022265297A1 (ko) | 2021-06-17 | 2022-06-09 | 연료전지 막가습기 |
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EP (1) | EP4322267A1 (ko) |
JP (1) | JP2024515129A (ko) |
KR (1) | KR20220168893A (ko) |
CN (1) | CN117480645A (ko) |
WO (1) | WO2022265297A1 (ko) |
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CN103346338A (zh) * | 2013-06-20 | 2013-10-09 | 南京工业大学 | 一种新型气体增湿器及其方法 |
JP5740952B2 (ja) * | 2010-11-04 | 2015-07-01 | 宇部興産株式会社 | 分離膜モジュール |
US20160193570A1 (en) * | 2013-09-30 | 2016-07-07 | Toray Industries, Inc. | Cartridge-type hollow fiber membrane module and method for manufacturing cartridge-type hollow fiber membrane module |
KR101697998B1 (ko) | 2011-12-29 | 2017-01-23 | 코오롱인더스트리 주식회사 | 막 가습기 |
KR20210000679A (ko) * | 2019-06-25 | 2021-01-05 | 코오롱인더스트리 주식회사 | 연료전지용 가습기 및 그 제조방법 |
KR20210000680A (ko) * | 2019-06-25 | 2021-01-05 | 코오롱인더스트리 주식회사 | 연료전지용 가습기 및 그 제조방법 |
-
2021
- 2021-06-17 KR KR1020210078939A patent/KR20220168893A/ko unknown
-
2022
- 2022-06-09 JP JP2023565326A patent/JP2024515129A/ja active Pending
- 2022-06-09 CN CN202280042060.2A patent/CN117480645A/zh active Pending
- 2022-06-09 WO PCT/KR2022/008162 patent/WO2022265297A1/ko active Application Filing
- 2022-06-09 EP EP22825222.7A patent/EP4322267A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5740952B2 (ja) * | 2010-11-04 | 2015-07-01 | 宇部興産株式会社 | 分離膜モジュール |
KR101697998B1 (ko) | 2011-12-29 | 2017-01-23 | 코오롱인더스트리 주식회사 | 막 가습기 |
CN103346338A (zh) * | 2013-06-20 | 2013-10-09 | 南京工业大学 | 一种新型气体增湿器及其方法 |
US20160193570A1 (en) * | 2013-09-30 | 2016-07-07 | Toray Industries, Inc. | Cartridge-type hollow fiber membrane module and method for manufacturing cartridge-type hollow fiber membrane module |
KR20210000679A (ko) * | 2019-06-25 | 2021-01-05 | 코오롱인더스트리 주식회사 | 연료전지용 가습기 및 그 제조방법 |
KR20210000680A (ko) * | 2019-06-25 | 2021-01-05 | 코오롱인더스트리 주식회사 | 연료전지용 가습기 및 그 제조방법 |
Also Published As
Publication number | Publication date |
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CN117480645A (zh) | 2024-01-30 |
JP2024515129A (ja) | 2024-04-04 |
EP4322267A1 (en) | 2024-02-14 |
KR20220168893A (ko) | 2022-12-26 |
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