WO2013035609A1 - フィルター装置、およびフィルター装置を備えた制御弁、ならびに、燃料電池システム - Google Patents
フィルター装置、およびフィルター装置を備えた制御弁、ならびに、燃料電池システム Download PDFInfo
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- WO2013035609A1 WO2013035609A1 PCT/JP2012/071942 JP2012071942W WO2013035609A1 WO 2013035609 A1 WO2013035609 A1 WO 2013035609A1 JP 2012071942 W JP2012071942 W JP 2012071942W WO 2013035609 A1 WO2013035609 A1 WO 2013035609A1
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- Prior art keywords
- filter
- water
- fluid
- water reservoir
- filter device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/268—Drying gases or vapours by diffusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
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- 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
- H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
- H01M8/04164—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal by condensers, gas-liquid separators or filters
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- 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
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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- 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
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
- H01M8/0687—Reactant purification by the use of membranes or filters
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- 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 filter device disposed in a wetting fluid flow path of a fuel cell system, and is particularly suitable as a filter that is disposed in series with a purge valve that opens and closes a wetting fluid passage and removes foreign matters in the fluid.
- the present invention relates to a filter device, a control valve including the filter device, and a fuel cell system.
- Such a fuel cell system generally employs a fuel cell system as shown in FIG. That is, the fuel cell system 200 of FIG. 16 includes a fuel cell stack 202 that is a solid polymer fuel cell body.
- the fuel cell stack 202 includes an anode (hydrogen electrode) 206 to which hydrogen gas, which is fuel gas, is supplied from a hydrogen tank 204, which is a fuel gas supply source.
- the fuel cell stack 202 is provided with a cathode (air electrode) 210 to which air as an oxidant gas is supplied via a compressor 208.
- Hydrogen gas which is a fuel gas, is stored in the hydrogen tank 204 as high-pressure hydrogen gas.
- the high-pressure hydrogen gas supplied from the hydrogen tank 204 is depressurized to the operating pressure of the fuel cell by the hydrogen pressure adjustment valve 212,
- the hydrogen is supplied to the anode 206 through the hydrogen supply channel 214.
- Excess hydrogen gas that has not been consumed by the anode 206 is returned to the hydrogen supply channel 214 by the hydrogen circulation channel 218 via the hydrogen circulation pump 216 and mixed with the hydrogen gas supplied from the hydrogen tank 204. , And supplied to the anode 206.
- air as an oxidant gas is compressed via a compressor 208 via an air filter (not shown), and the compressed air is supplied to the cathode 210 via an air supply flow path 220. Yes.
- the fuel cell stack 202 is provided with a cooling system for circulating a cooling fluid such as cooling water in order to keep the temperature of the fuel cell stack 202 at a predetermined temperature. That is, the cooling fluid cooled by the radiator 224 is circulated so as to cool the fuel cell stack 202 via the cooling water pump 226 and the cooling fluid circulation paths 228 and 230.
- a cooling fluid such as cooling water
- a discharge path 232 for discharging nitrogen gas and the like contained in excess hydrogen gas to the outside is branched in the hydrogen circulation flow path 218.
- an electromagnetic path for opening and closing the discharge path 232 is opened and closed.
- a purge valve 234 using a valve is arranged.
- a filter is provided on the purge valve 234 of the discharge path 232.
- the filter is easily heated, a thawing heater is arranged, and the fuel cell system is warmed with the thawing heater when the fuel cell system is started, so that blockage due to freezing is prevented. It is configured.
- the present invention eliminates the need for a complicated control and heat source such as a thawing heater when water adheres to and remains on the filter, and discharges the remaining water on the filter. Even when the system is left at a low temperature after stopping the system, it is possible to quickly and surely prevent the filter from being clogged, and to start the fuel cell system quickly and at a low cost. It is an object of the present invention to provide a compact filter device disposed in a wet fluid flow path of a fuel cell system, a control valve including the filter device, and a fuel cell system.
- the filter device of the present invention comprises: A filter device disposed in a wetting fluid flow path of a system that includes moisture in the fluid, A fluid introduction path for introducing the fluid flowing through the wet fluid flow path into the filter chamber from below the filter chamber; A filter member that permeates the fluid introduced from the fluid introduction path into the filter chamber and removes foreign matters in the fluid; and a filter disposed in the filter chamber; A water reservoir provided below the filter; A fluid discharge path for discharging the fluid that has passed through the filter.
- the amount of water held in the water reservoir increases, and the liquid level of the water reservoir reaches the filter member of the filter. When it reaches, the water accumulated in the water reservoir and the water remaining on the filter member will be connected.
- the water staying in the filter member due to the surface tension and gravity is discharged to the water reservoir, and when the water accumulated in the water reservoir flows down to the fluid introduction path, the water accumulated in the water reservoir becomes the priming water, Water remaining on and remaining on the filter member can be discharged.
- the filter member can be quickly and reliably prevented from being blocked, and the filter member can be prevented from being damaged due to the freezing of the filter member.
- the system can be started quickly.
- a heat source such as a complicated control and a thawing heater is not required, and an inexpensive and compact filter device disposed in the wet fluid flow path of the fuel cell system can be provided.
- the gap dimension J1 between the filter and the side wall of the filter chamber is configured to be a predetermined dimension, and the surface tension acting on the water accumulated in the water reservoir is adjusted.
- the water level of the water reservoir is configured to be a predetermined water level.
- the gap dimension J1 between the filter and the side wall 60a of the filter chamber is a predetermined dimension, the surface tension acting on the water accumulated in the water reservoir is controlled, and the water is introduced into the fluid introduction path. It is possible to prevent the liquid from flowing down. Thereby, the water level of the water stored in the water reservoir can be easily set during system operation.
- the filter device of the present invention is The bottom of the water reservoir is formed so as to be located below the upper end surface of the filter member of the filter, The lower surface of the fluid introduction path is formed to be located below the bottom surface of the water reservoir.
- the bottom surface of the water reservoir is formed so as to be positioned below the upper end surface of the filter member of the filter so that the water level accumulated in the water reservoir during system operation can be reduced.
- the level of water accumulated in the water reservoir can be determined by the outer diameter of the filter, the inner diameter of the filter chamber, and the fluid introduction path so as to be above the lower end surface of the filter member of the filter.
- the water accumulated in the water reservoir and the water remaining on the filter member are connected.
- the lower surface of the fluid introduction path is formed so as to be positioned below the bottom surface of the water reservoir, so that water accumulated in the water reservoir easily flows down to the fluid introduction path due to gravity.
- the water accumulated in the water reservoir becomes priming water, and the water adhering to and remaining on the filter member can be discharged.
- the filter device of the present invention is characterized in that the inner bottom surface of the filter is formed so as to be inclined downward toward the outside. With this configuration, the inner bottom surface of the filter is formed so as to incline downward toward the outside, so that the water can easily escape from the inner bottom surface of the filter due to the inclination of the inner bottom surface of the filter. .
- the level of water accumulated between the inner bottom surface 64e of the filter 62 and the filter member 66 rises, so that the water adhering to and remaining on the filter member 66 can be easily discharged from the filter 62 by gravity. Furthermore, it is possible to prevent the filter itself from being damaged by freezing of the water accumulated in the filter (the inner bottom surface of the filter).
- the filter device of the present invention is characterized in that a communication filter member communicating with the water reservoir is formed at the bottom of the filter.
- a communication filter member communicating with the water reservoir is formed at the bottom of the filter.
- the water accumulated in the water reservoir and the water remaining on the filter member are connected to each other through the continuous filter member formed at the bottom of the filter, and the water stays in the filter member due to surface tension and gravity.
- the water thus drained is discharged to the water reservoir through a communication filter member formed at the bottom of the filter.
- the water accumulated in the water reservoir flows down to the fluid introduction path, the water accumulated in the water reservoir becomes priming water, and the water remaining on the filter member through the continuous filter member formed at the bottom of the filter. Can be discharged.
- the filter device of the present invention is characterized in that the bottom surface of the water reservoir is formed so as to be inclined downward toward the outside.
- the filter member of the filter is extended to a side surface position lower than the bottom surface inside the filter.
- the filter member of the filter is extended to a side position lower than the bottom surface inside the filter, so even if the water level of the water reservoir is low, the extended part of the filter member Thus, water accumulated in the filter member of the filter and water accumulated in the water reservoir are connected.
- the water retained in the filter member due to the surface tension and gravity is discharged to the water reservoir through the extending portion of the filter member, and when the water accumulated in the water reservoir flows down to the fluid introduction path, The water accumulated in the reservoir becomes priming water, and the water adhering to and remaining on the filter member can be discharged.
- the filter device of the present invention is characterized in that the water reservoir is formed in the filter chamber.
- the water reservoir can be formed in the filter housing that forms the filter chamber, for example, by groove processing, and processing for forming the water reservoir is facilitated.
- the water reservoir is formed inside the filter.
- the water reservoir may be formed inside the filter together with the water reservoir formed in the filter chamber.
- the filter device of the present invention is characterized in that the water reservoir is subjected to a hydrophilic treatment.
- the water reservoir is subjected to a hydrophilic treatment, so that the water stored in the water reservoir becomes easy to flow without being spherical, and the water stored in the water reservoir flows down to the fluid introduction path. It becomes easy and the water
- the filter device of the present invention is characterized in that a hydrophilic treatment is applied to a lower portion of the filter member of the filter.
- a hydrophilic treatment is applied to a lower portion of the filter member of the filter.
- the filter device of the present invention is characterized in that a water repellent treatment is performed on an upper portion of the filter member of the filter.
- the present invention is a control valve including any one of the filter devices described above.
- the control valve of the present invention when used, for example, as a purge valve for a discharge path of a fuel cell system, even when the control valve is left at a low temperature after the system is stopped, the filter member is frozen. Clogging can be prevented quickly and reliably, and the filter itself can be prevented from being damaged by freezing of the filter member, and the fuel cell system can be started up quickly.
- the control valve according to the present invention is characterized in that an elastic member is interposed between a filter housing and a filter constituting the filter chamber.
- valve body of the control valve and a filter are connected.
- the filter directly vibrates due to the operation of the control valve, and it becomes easier to discharge moisture remaining on the filter member. .
- the present invention is a fuel cell system in which any one of the filter devices described above is disposed in a discharge channel of a wet fluid channel of the fuel cell system.
- the filter member when used as a purge valve for a discharge path of a fuel cell system, even when the system is left at a low temperature after the system is stopped, the filter member can be quickly and reliably blocked by freezing.
- the filter itself can be prevented from being damaged by the freezing of the filter member, and the fuel cell system can be started up quickly.
- the present invention is a fuel cell system characterized in that the control valve according to any one of the foregoing is arranged in a discharge channel of a wet fluid channel of the fuel cell system.
- the control valve according to any one of the foregoing is arranged in a discharge channel of a wet fluid channel of the fuel cell system.
- the filter and the control valve are integrated, the fuel cell system can be downsized.
- the amount of water retained in the water reservoir increases, and when the liquid level of the water reservoir reaches the filter member of the filter, the water reservoir The water accumulated in the portion and the water adhered to and remaining on the filter member are connected.
- the water staying in the filter member due to the surface tension and gravity is discharged to the water reservoir, and when the water accumulated in the water reservoir flows down to the fluid introduction path, the water accumulated in the water reservoir becomes the priming water, Water remaining on and remaining on the filter member can be discharged.
- the filter member can be quickly and reliably prevented from being blocked, and the filter member can be prevented from being damaged due to the freezing of the filter member.
- the system can be started quickly.
- a complicated control a heat source such as a thawing heater is unnecessary, an inexpensive and compact filter device disposed in the wet fluid flow path of the fuel cell system, and a control valve including the filter device,
- a fuel cell system can be provided.
- FIG. 1 is a schematic view of a fuel cell system to which the filter device of the present invention is applied.
- FIG. 2 is a schematic longitudinal sectional view of an embodiment of the filter device of the present invention.
- FIG. 3 is a schematic sectional view taken along line AA of the filter device of FIG. 4 is a schematic cross-sectional view of the filter device of FIG. 2 when the water level of the water reservoir at line BB is appropriate.
- FIG. 5 is a partially enlarged sectional view of part C of the filter device of FIG.
- FIG. 6 is a schematic cross-sectional view when the water level of the water reservoir at line BB of the filter device of FIG. 2 is inappropriate.
- FIG. 7 is a schematic longitudinal sectional view showing a filter 62 of another embodiment of the filter device of the present invention.
- FIG. 8 is a schematic longitudinal sectional view showing another embodiment of the filter device of the present invention.
- FIG. 9 is a partially enlarged view of a portion D of the filter device of FIG.
- FIG. 10 is a schematic longitudinal sectional view showing another embodiment of the filter device of the present invention.
- FIG. 11 is a partially enlarged view of a portion E of the filter device of FIG.
- FIG. 12 is a schematic longitudinal sectional view showing another embodiment of the filter device of the present invention.
- FIG. 13 is a schematic longitudinal sectional view showing another embodiment in which the filter device of the present invention is applied to a control valve.
- FIG. 14 is a schematic longitudinal sectional view showing another embodiment in which the filter device of the present invention is applied to a control valve.
- FIG. 15 is a schematic longitudinal sectional view showing another embodiment in which the filter device of the present invention is applied to a control valve.
- FIG. 16 is a schematic diagram of a conventional fuel cell system.
- FIG. 1 is a schematic view of a fuel cell system to which the filter device of the present invention is applied
- FIG. 2 is a schematic longitudinal sectional view of an embodiment of the filter device of the present invention
- FIG. 4 is a schematic cross-sectional view taken along the line A
- FIG. 4 is a schematic cross-sectional view taken along the line BB of the filter device of FIG. 2 when the water level is appropriate
- FIG. 5 is a schematic view of the filter device shown in FIG.
- FIG. 6 is a schematic sectional view when the water level of the water reservoir at line BB of the filter device of FIG. 2 is inappropriate.
- symbol 10 has shown the fuel cell system with which the filter apparatus of this invention is applied as a whole.
- the fuel cell system 10 includes a fuel cell stack 12 that is a polymer electrolyte fuel cell main body.
- the fuel cell stack 12 includes an anode (hydrogen electrode) 16 to which hydrogen gas as fuel gas is supplied from a hydrogen tank 14 as a fuel gas supply source. Further, the fuel cell stack 12 is provided with a cathode (air electrode) 20 to which air as an oxidant gas is supplied via a compressor 18.
- anode hydrogen electrode
- cathode air electrode
- Hydrogen gas which is fuel gas, is stored in the hydrogen tank 14 as high-pressure hydrogen gas.
- the high-pressure hydrogen gas supplied from the hydrogen tank 14 is depressurized to the operating pressure of the fuel cell by the hydrogen pressure adjustment valve 22, The hydrogen is supplied to the anode 16 through the hydrogen supply channel 24.
- the air as the oxidant gas is compressed via the compressor 18 via an air filter (not shown), and the compressed air is supplied to the cathode 20 via the air supply channel 30. Yes.
- the fuel cell stack 12 is provided with a cooling system for circulating a cooling fluid such as cooling water in order to keep the temperature of the fuel cell stack 12 at a predetermined temperature. That is, the cooling fluid cooled by the radiator 34 is circulated so as to cool the fuel cell stack 12 via the cooling water pump 36 and the cooling fluid circulation paths 38 and 40.
- a cooling fluid such as cooling water
- a discharge path 42 for discharging excess hydrogen gas to the outside is branched in the hydrogen circulation flow path 28, and a purge valve 44 using an electromagnetic valve, for example, for opening and closing the discharge path 42. Is arranged.
- the filter device 50 of the present invention is provided on the upstream side of the purge valve 44 in the discharge path 42. .
- reference numeral 46 indicates a water drain valve
- 48 indicates a control unit.
- This control unit is composed of an arithmetic processing unit such as a CPU, for example, and based on various data and programs stored in advance in a storage device, the compressor 18, the hydrogen pressure regulating valve 22, the hydrogen circulation pump 26, the air pressure
- the adjustment valve 32, the radiator 34, the cooling water pump 36, the purge valve 44, the water discharge valve 46, and the like is controlled.
- the filter device 50 of the present invention includes an upper housing 52 and a lower housing 54, and the upper housing 52 and the lower housing 54 are sealed by a seal member 56. ing.
- the lower housing 54 is formed with a fluid introduction path 58 that is connected to the branch path 28 a of the hydrogen circulation flow path 28 and introduces a fluid.
- the fluid introduction path 58 is formed so as to incline upward from the lower side portion of the lower housing 54 and reach the filter chamber 60 from below the filter chamber 60.
- the upper end 58 a of the fluid introduction path 58 is configured to communicate with the filter chamber 60 formed at the center of the upper portion of the lower housing 54.
- the filter 62 is used to allow the fluid introduced from the fluid introduction path 58 to pass therethrough and remove foreign matters such as dust in the fluid. Is housed.
- the filter 62 includes a filter body 64 having a bottom and a substantially cylindrical shape, as shown in FIGS.
- the filter main body 64 includes a filter member 66 such as a mesh, which is attached to the side peripheral portion of the filter main body 64 so as to cover the opening 64b formed between the four vertical frame members 64a of the filter main body 64. Yes.
- a seal member 68 is interposed between the filter main body 64 and the upper housing 52. Further, a fluid discharge path 70 for discharging the fluid that has passed through the filter 62 is formed in the upper housing 52 at the upper part of the filter 62, and this fluid discharge path 70 is connected to the purge valve 44 of the discharge path 42. ing.
- the fluid discharge path 70 includes a first fluid discharge path 70a extending upward and a second fluid discharge path 70b reaching the side of the upper housing 52 so as to be inclined downward.
- a water reservoir 72 having a substantially triangular cross section and a groove shape is formed around the bottom 64 c of the filter main body 64 below the filter 62, and a lower corner of the filter chamber 60 of the lower housing 54. It is formed at the corner.
- the water reservoir 72 is formed in the filter chamber 60 of the lower housing 54, the water reservoir 72 is formed in the lower housing 54 forming the filter chamber 60 by, for example, groove processing. Therefore, processing for forming the water reservoir 72 is facilitated.
- the amount of water held in the water reservoir 72 is increased, and the liquid level of the water reservoir 72 is reduced by the filter.
- the filter member 66 of 62 When reaching the filter member 66 of 62, the water accumulated in the water reservoir 72 and the water adhering to and remaining on the filter member 66 are connected.
- the filter member 66 can be quickly and reliably prevented from being blocked, and the filter member 66 can be prevented from being damaged due to the freeze of the filter member 66.
- the fuel cell system can be quickly started up.
- the bottom surface 72 a of the water reservoir 72 is formed so as to be positioned below the upper end surface 66 a of the filter member 66 of the filter 62 and the lower surface 58 b of the fluid introduction path 58.
- the bottom surface 72a of the water reservoir 72 is formed so as to be positioned below the upper end surface 66a of the filter member 66 of the filter 62. Therefore, during the system operation, the water reservoir 72 The water level accumulated in the water reservoir 72 is set so that the water level accumulated in the water reservoir 72 is higher than the lower end surface 66b of the filter member 66 of the filter 62, the outer diameter of the filter 62, the inner diameter of the filter chamber 60, and the fluid. It can be determined by the introduction route 58.
- the gap dimension J1 between the filter 62 and the side wall 60a of the filter chamber 60 is controlled, What is necessary is just to suppress flowing down to the fluid introduction path 58. Thereby, the water level of the water pool 72 can be easily set during system operation.
- W1 is determined by the inner diameter D2 of the filter 62 and the water level in which the filter 62 is immersed. Therefore, the water W2 accumulated between the filter 62 and the side wall 60a of the filter chamber 60 of the lower housing 54 is between the filter 62 and the side wall 60a of the filter chamber 60 of the lower housing 54 so that the desired water level K1 is obtained.
- the gap dimension J1 may be adjusted and set.
- the position is lower than the lower end surface 66b of the filter member 66 of the filter 62, and the water in the water reservoir 72 and the water in the mesh of the filter member 66 are not connected, and adheres to the filter member 66. Residual moisture cannot be discharged.
- the side wall of the filter chamber 60 of the filter 62 and the lower housing 54 is set so that the water W2 accumulated between the filter 62 and the side wall 60a of the filter chamber 60 of the lower housing 54 becomes the desired water level K1. What is necessary is just to adjust and set the clearance dimension J1 between 60a.
- the gap dimension J1 between the filter 62 and the side wall 60a of the filter chamber 60 of the lower housing 54 is not particularly limited, but considering the surface tension, the inner diameter of the fluid introduction path 58 is not limited. Is preferably set in the range of 1 to 20 mm.
- the inclination angle ⁇ of the fluid introduction path 58 is not particularly limited, but is preferably set in a range of 30 ° to 60 ° in consideration of the discharge effect.
- the bottom surface 72a of the water reservoir 72 is formed so as to be inclined downward toward the outside.
- the bottom surface 72a of the water reservoir 72 is formed so as to incline downward toward the outside, so that the water in the water reservoir 72 is discharged to the fluid introduction path 58 by gravity. It becomes easy.
- the inclination angle ⁇ is not particularly limited, but is preferably set in the range of 45 ° to 75 ° in view of the above-described discharge effect.
- the material of the filter member 66 of the filter 62 is not particularly limited, and any conventionally known material such as a stainless steel mesh such as SUS or a porous filter may be used as long as it has a filter function. It can be comprised from the material of.
- the material of the filter body 64 of the filter 62 is not particularly limited, and can be made of a known material such as a synthetic resin or a metal such as stainless steel such as SUS.
- the filter member 66 is preferably a single-layer filter member 66 in view of the drainage function, but may be multi-layered.
- the filter 62 is a substantially cylindrical filter body 64.
- the filter 62 may have various shapes such as a conical shape, a pyramid shape, and a polygonal shape.
- water repellent treatment it is desirable to perform water-repellent treatment on the fluid introduction path 58 and the fluid discharge path 70 because moisture easily flows.
- a water repellent treatment a conventionally known water repellent treatment can be used.
- a water repellent treatment such as a fluorine treatment with a fluororesin such as polytetrafluoroethylene facilitates the flow of water. So desirable.
- the water reservoir 72 is subjected to a hydrophilic treatment.
- hydrophilic treatment By applying hydrophilic treatment to the water reservoir 72 in this way, the water stored in the water reservoir 72 is not easily spherical and flows easily, and the water stored in the water reservoir 72 is likely to flow down to the fluid introduction path 58. The water adhering to and remaining on the filter member 66 can be effectively discharged.
- the lower portion of the filter member 66 of the filter 62 is subjected to a hydrophilic treatment.
- a hydrophilic treatment to the lower part of the filter member 66 of the filter 62, the water adhering to and remaining on the lower part of the filter member 66 can easily flow without being spherical, and is easily discharged by the action of gravity. Become.
- the hydrophilic treatment is not particularly limited, and a conventionally known hydrophilic treatment can be used.
- a method of coating by dissolving and dispersing silicon oxide in a solvent such as alcohol is employed. Can do.
- the upper portion of the filter member 66 of the filter 62 is subjected to water repellent treatment.
- the water repellent treatment is performed on the upper portion of the filter member 66 of the filter 62, so that the water adhering to the upper portion of the filter member 66 of the filter 62 is repelled by the water repellent treatment. Since it is attracted to the lower part of the filter member 66 by the action of gravity without remaining in the (mesh part), the water adhering to and remaining on the filter member 66 can be effectively discharged.
- the water attached to the upper part of the filter member 66 of the filter 62 and repelled by the water repellent treatment is subjected to the hydrophilic treatment. Since it is attracted by the lower part of the filter member 66 of the applied filter 62, the water adhering to and remaining on the filter member 66 can be effectively discharged.
- the wetting fluid consisting of water and gas is introduced from the fluid introduction path 58, passes through the filter 62, and the wetting fluid is discharged from the fluid discharge path 70. It is of course possible to introduce the wetting fluid from the discharge path 70 and pass it through the filter 62 and discharge the wetting fluid from the fluid introduction path 58.
- FIG. 7 is a schematic longitudinal sectional view showing a filter 62 of another embodiment of the filter device of the present invention.
- the filter 62 of this embodiment has basically the same configuration as that of the filter 62 of Embodiment 1 shown in FIGS. 1 to 5, and the same reference numerals are given to the same constituent members, and Detailed description is omitted.
- the inner bottom surface of the filter 62 that is, the inner bottom surface 64 e of the bottom portion 64 c of the filter body 64 is formed so as to be inclined downward toward the outside. .
- the inner bottom surface 64e of the bottom portion 64c of the filter body 64 is formed so as to be inclined downward toward the outer side, so that the water is filtered by the inclination of the inner bottom surface 64e of the bottom portion 64c of the filter body 64. It becomes easy to come out from the inner bottom.
- the filter 62 itself from being damaged due to freezing of the water staying inside the filter 62 (inner bottom surface of the filter).
- the inclination angle ⁇ of the inner bottom surface 64e of the bottom portion 64c of the filter main body 64 is not particularly limited, but is set in a range of 15 ° to 60 ° in consideration of the discharge effect. Is desirable.
- FIG. 8 is a schematic longitudinal sectional view showing another embodiment of the filter device of the present invention
- FIG. 9 is a partially enlarged view of a portion D of the filter device of FIG.
- the filter device 50 of this embodiment has basically the same configuration as the filter device 50 of Embodiment 1 shown in FIGS. 1 to 5, and the same reference numerals are given to the same components. Detailed description thereof will be omitted.
- a communication filter member 74 that communicates with the water reservoir 72 is formed at the bottom 64c of the filter body 64 of the filter 62.
- an extended portion 64 d in which a vertical frame member 64 a extends downward is formed on the bottom portion 64 c of the filter main body 64, whereby a water reservoir 72 is also formed on the bottom portion 64 c of the filter main body 64.
- the communication filter member 74 is indicated only by reference numerals for convenience of explanation.
- the communication filter member 74 that connects the inside of the filter 62 and the water reservoir 72 is formed on the bottom 64c of the filter main body 64 of the filter 62. Therefore, when the water level of the water reservoir 72 increases, the filter 62 The water staying in the filter member 66 communicates with the water reservoir 72 through the communication channel 76 formed in the bottom 64c of the filter body 64 of the filter 62.
- the water accumulated in the water reservoir 72 and the water remaining on the filter member 66 are connected to each other through the communication filter member 74 formed on the bottom 64c of the filter body 64 of the filter 62.
- the water accumulated in the water reservoir 72 flows down to the fluid introduction path 58, the water accumulated in the water reservoir 72 becomes priming water, and passes through the communication filter member 74 formed on the bottom 64 c of the filter body 64 of the filter 62. Thus, moisture remaining on and remaining on the filter member 66 can be discharged.
- the bottom surface 72 a of the water reservoir 72 and the fluid introduction path 58 communicate with each other, the water itself accumulated in the water reservoir is simultaneously discharged to the fluid introduction path 58.
- FIG. 10 is a schematic longitudinal sectional view showing another embodiment of the filter device of the present invention
- FIG. 11 is a partially enlarged view of portion E of the filter device of FIG.
- the filter device 50 of this embodiment has basically the same configuration as the filter device 50 of Embodiment 1 shown in FIGS. 1 to 5, and the same reference numerals are given to the same components. Detailed description thereof will be omitted.
- FIG. 10 to FIG. 62 includes an extending portion 66c in which 62 filter members 66 are extended.
- the extending portion 66c in which the filter member 66 of the filter 62 is extended to the side surface position lower than the inner bottom surface 64e of the bottom portion 64c of the filter body 64 of the filter 62 is provided, the water level of the water reservoir 72 is provided. Even in a low state, the water accumulated in the filter member 66 of the filter 62 and the water accumulated in the water reservoir 72 are connected via the extending portion 66 c of the filter member 66.
- the water staying in the filter member 66 due to the surface tension and gravity is discharged to the water reservoir 72 through the extending portion 66c of the filter member 66, and the water accumulated in the water reservoir 72 is the fluid introduction path.
- the water accumulated in the water reservoir 72 becomes priming water, and the water adhering to and remaining on the filter member 66 can be discharged.
- the end portion 66d of the extending portion 66c of the filter member 66 is mounted in the bottom portion 64c of the filter body 64 of the filter 62 so that the filter member 66 falls off. It is to be prevented.
- FIG. 12 is a schematic longitudinal sectional view showing another embodiment of the filter device of the present invention.
- the filter device 50 of this embodiment has basically the same configuration as the filter device 50 of Embodiment 1 shown in FIGS. 1 to 5, and the same reference numerals are given to the same components. Detailed description thereof will be omitted.
- another water reservoir 78 is formed inside the filter 62, that is, at the bottom 64 c of the filter main body 64.
- the water accumulated in the filter member 66 of the filter 62 and the water accumulated in the water reservoir 78 are connected, and the water overflowing from the water reservoir 78 is discharged to the water reservoir 72, and the water reservoir 72.
- the water accumulated in the water reservoir 78 becomes priming water, and the water adhering to and remaining on the filter member 66 can be discharged.
- the bottom surface 72 a of the water reservoir 72 and the fluid introduction path 58 communicate with each other, the water itself accumulated in the water reservoir is simultaneously discharged to the fluid introduction path 58.
- the two water reservoir portions that is, the water reservoir portion 72 and the water reservoir portion 78 formed inside the filter 62 are formed, but only the water reservoir portion 78 formed inside the filter 62 is formed. It is also possible.
- the water reservoir 78 is formed inside the filter 62, it is not necessary to form the water reservoir in the filter housing that forms the filter chamber 60. Processing is not required, the processing time can be saved, and the cost can be reduced.
- FIG. 13 is a schematic longitudinal sectional view showing another embodiment in which the filter device of the present invention is applied to a control valve.
- the filter device 50 of this embodiment has basically the same configuration as the filter device 50 of Embodiment 1 shown in FIGS. 1 to 5, and the same reference numerals are given to the same components. Detailed description thereof will be omitted.
- the upper housing 52 and the lower housing 54 are integrated into a filter housing 51, and a valve chamber 82 is formed at the center of the upper portion of the filter housing 51. Further, the fluid discharge path 70 is formed to be inclined downward and outward so as to communicate with the valve chamber 82.
- control valve 80 is assembled by mounting the electromagnetic valve type control unit 86 including the valve body 84 of the control valve 80 on the filter housing 51. Moreover, the control part 86 of this control valve 80 is provided with the electromagnetic coil 90 by which the drive part 88 was penetrated, as shown in FIG.
- the electromagnetic coil 90 is molded with a mold resin 94 so as to surround the bobbin 92 around which the winding is wound and the bobbin 92. Further, as shown in FIG. 13, the electromagnetic coil 90 is mounted inside the magnetic frame 96 and is fixed to the drive unit via the magnetic frame 96.
- the drive unit 88 is inserted through the drive unit insertion hole 100 formed at the center of the bottom plate unit 98 of the magnetic frame 96 and the drive unit insertion hole 102 of the bobbin 92. Then, the fastening bolt 106 formed on the upper portion of the attractor 104 of the driving unit 88 is inserted into the bolt insertion hole 110 formed in the center portion of the upper plate portion 108 of the magnetic frame 96 and screwed by the nut 112. Yes.
- the drive unit 88 includes a plunger case 114, and includes a plunger 116 to which the valve body 84 is fixed so as to be movable up and down in the plunger case 114.
- a biasing spring 120 that biases the plunger 116 downward, that is, in the direction of the valve seat 118, is interposed between the suction element 104 and the plunger 116.
- a seal frame member 124 to which a seal member 122 is attached is fixed to the outer periphery of the lower end of the plunger case 114, and is passed through a fastening hole 128 formed in the bottom plate portion 98 of the magnetic frame 96 and a fastening hole 130 formed in the filter housing 51. Then, the filter housing 51 is mounted with a fastening bolt 132.
- a diaphragm fixing member 134 is fixed below the seal frame member 124 with a seal member 135 interposed therebetween, and the diaphragm 136 is attached to the valve body 84 through the diaphragm fixing member 134.
- an O-ring shaped elastic member 138 is interposed between the filter housing 51 and the filter 62 constituting the filter chamber 60.
- the plunger 116 moves in the direction of the attracting element 104 against the biasing spring 120, and the valve body 84 connected to the plunger 116 is The valve opening is opened away from the valve seat 118.
- the plunger 116 is moved away from the attractor 104 by the biasing force of the biasing spring 120, and the valve body 84 connected to the plunger 116 is moved.
- the valve opening is closed by contacting the valve seat 118.
- the acceleration A is applied to the filter due to the vibration caused by the operation of the control valve 80 in addition to the gravitational acceleration G, it is possible to discharge the water remaining on the filter member 66 with a small amount of water.
- the elastic member 138 a known elastic member such as a disc spring or a coil spring can be used in addition to the above O-ring shape as long as it has elasticity.
- control valve 80 is not particularly limited as long as it is a control valve. It can also be applied to control valves.
- FIG. 14 is a schematic longitudinal sectional view showing another embodiment in which the filter device of the present invention is applied to a control valve.
- the filter device 50 of this embodiment has basically the same configuration as that of the filter device 50 of embodiment 6 shown in FIG. 13, and the same reference numerals are given to the same components and the details thereof are described. The detailed explanation is omitted.
- valve body 84 of the control valve 80 and the filter 62 are connected as shown in FIG. That is, the valve body 84 is fixed to the bottom portion 64c of the filter main body 64 of the filter 62 by caulking at the distal end portion 142 of the connecting shaft portion 140 extending downward.
- a gap 137 for vertical vibration of the filter 62 is formed between the bottom 64 c of the filter main body 64 of the filter 62 and the filter housing 51. Further, the elastic member 138 of the filter device 50 of the sixth embodiment shown in FIG. 13 is not provided.
- FIG. 15 is a schematic longitudinal sectional view showing another embodiment in which the filter device of the present invention is applied to a control valve.
- the filter device 50 of this embodiment has basically the same configuration as that of the filter device 50 of embodiment 6 shown in FIG. 13, and the same reference numerals are given to the same components and the details thereof are described. The detailed explanation is omitted.
- the elastic member 138 of the filter device 50 of Embodiment 6 shown in FIG. 13 is not provided.
- the inner bottom surface of the filter 62 that is, the inner bottom surface 64e of the bottom portion 64c of the filter body 64 is formed so as to be inclined downward toward the outside. ing.
- a filter fixing opening 144 is formed at the lower end of the filter housing 51 so that the filter 62 can be easily replaced.
- a filter fixing plug is interposed in the filter fixing opening 144 via a seal member 146. 148 is screwed.
- a communication gap 150 is formed between the bottom surface 72 a of the water reservoir 72, that is, between the lower end of the filter housing 51 and the filter fixing plug 148.
- a discharge communication hole 152 that communicates with the fluid introduction path 58 is formed.
- the water adhering to and remaining on the filter member 66 through the communication gap 150 and the discharge communication hole 152 is more easily discharged to the fluid introduction path 58.
- water accumulates not only in the water reservoir 72 but also in the communication gap 150.
- the discharge communication hole 152 is provided, the water flowing down the fluid introduction path 58 and the water accumulated in the communication gap 150 are connected via the discharge communication hole 152.
- the filter device 50 of this embodiment not only the priming effect of the water adhering to the water reservoir 72 and the filter member 66 (first time) but also the water flowing down from the fluid introduction path 58 is accumulated in the communication gap 150. As a result, the priming effect (second time) that occurs with water is generated, resulting in a total of two priming effects.
- the filter device 50 of the present invention is applied to the fuel cell system 10.
- the filter device 50 of the present invention is applied to the fuel cell system 10.
- Various modifications can be made without departing from the object of the present invention, such as the fuel cell system 10 as long as it is a wet fluid flow path of a system containing moisture in the fluid.
- the present invention is a filter device disposed in a wetting fluid flow path of a fuel cell system, and in particular, as a filter disposed on the upstream side of a purge valve that opens and closes the passage of the wetting fluid and removes foreign matters in the fluid.
- a suitable filter device, a control valve provided with the filter device, and a fuel cell system are suitable filter devices, a control valve provided with the filter device, and a fuel cell system.
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Abstract
Description
すなわち、図16の燃料電池システム200では、固体高分子型燃料電池本体である燃料電池スタック202を備えている。
また、燃料電池スタック202には、燃料電池スタック202の温度を所定の温度に保つために、冷却水などの冷却流体を循環する冷却系が設けられている。すなわち、ラジエーター224で冷却された冷却流体が、冷却水ポンプ226を介して、冷却流体循環経路228、230を介して、燃料電池スタック202を冷却するように循環される。
このため、特許文献1の燃料電池システムでは、燃料電池システムの起動時において、フィルターの凍結による流路の閉塞を回避するために、燃料電池システムの停止時に水素ポンプの回転数を上げて、パージガスで水分を吹き飛ばすように構成されている。
流体中に水分を含むシステムの湿潤流体流路に配置されるフィルター装置であって、
前記湿潤流体流路を流れる流体を、フィルター室の下方よりフィルター室に導入する流体導入経路と、
前記流体導入経路からフィルター室に導入された流体を透過させて、流体中の異物を除去するフィルター部材を備え、前記フィルター室内に配置されたフィルターと、
前記フィルターの下方に設けられた水溜め部と、
前記フィルターを通過した流体を排出する流体排出経路と、を備えることを特徴とする。
前記水溜め部の底面が 、前記フィルターのフィルター部材の上端面よりも下方に位置するように形成されるとともに、
前記流体導入経路の下面が、前記水溜め部の底面よりも下方に位置するように形成されていることを特徴とする。
このように構成することによって、フィルターの内側底面が、外側に向かって下方に傾斜するように形成されているので、フィルターの内側底面の傾斜で、水がフィルターの内側底面から外に抜けやすくなる。
さらに、フィルターの内部(フィルターの内側底面)に滞留した水の凍結によって、フィルター自体が破損するのを防止することができる。
このように構成することによって、フィルターの底部に、水溜め部と連通する連通フィルター部材が形成されているので、水溜め部の水位が高くなると、フィルターのフィルター部材内に滞留した水は、フィルターの底部に形成された連通フィルター部材を介して、水溜め部と連通することになる。
このように構成することによって、水溜め部の底面が、外側に向かって下方に傾斜するように形成されているので、水溜め部の水が、重力によって流体導入経路に排出されやすくなる。
このように構成することによって、フィルターの内側の底面よりも低い側面位置まで、フィルターのフィルター部材が延設されているので、水溜め部の水位が低い状態でも、このフィルター部材の延設部分を介して、フィルターのフィルター部材内に滞留した水と、水溜め部に溜まった水とがつながることになる。
このように構成することによって、水溜め部を、フィルター室を形成するフィルターハウジングに、例えば、溝加工などによって形成することができ、水溜め部の形成のための加工が容易となる。
このように構成することによって、水溜め部を、フィルターの内部に形成するので、水溜め部を、フィルター室を形成するフィルターハウジングに形成する必要がないので、フィルターハウジングに、溝加工などの特別な加工が不要で、加工の手間が省け、コストを低減することができる。
また、本発明のフィルター装置は、前記水溜め部に、親水処理が施されていることを特徴とする。
このように構成することによって、フィルターのフィルター部材の下方部分に、親水処理が施されているので、フィルター部材の下方部分に付着、残留した水分が、球状にならず流れやすくなり、重力の作用によって排出しやすくなる。
このように構成することによって、フィルターのフィルター部材の上方部分に、撥水処理が施されているので、フィルターのフィルター部材の上方部分に付着した水分が撥水処理により弾かれて、フィルター部材の上方部分(メッシュ部分)に残留することなく、重力の作用によって、フィルター部材の下方部分に引き寄せられるため、フィルター部材に付着、残留した水分を効果的に排出することができる。
このように構成することによって、本発明の制御弁を、例えば、燃料電池システムの排出経路のパージ弁などに用いた場合に、システム停止後に低温下に放置した場合にも、フィルター部材の凍結による閉塞を、迅速かつ確実に防止することができ、また、フィルター部材の凍結によるフィルター自体の破損も防止できるとともに、燃料電池システムの起動を迅速に行うことができる。
このように構成することによって、フィルター室を構成するフィルターハウジングとフィルターとの間に、弾性部材が介装されているので、制御弁の作動による振動、すなわち、弁体が弁座に離接することによる振動などがフィルターに伝わり、弾性部材で保持されたフィルターが振動して、フィルター部材に付着、残留した水分が排出し易くなる。
このように構成することによって、制御弁の弁体とフィルターとが連結されているので、制御弁の作動によって、直接フィルターが振動して、フィルター部材に付着、残留した水分がより排出し易くなる。
このように構成することによって、例えば、燃料電池システムの排出経路のパージ弁などに用いた場合に、システム停止後に低温下に放置した場合にも、フィルター部材の凍結による閉塞を、迅速かつ確実に防止することができ、また、フィルター部材の凍結によるフィルター自体の破損も防止できるとともに、燃料電池システムの起動を迅速に行うことができる。
このように構成することによって、例えば、燃料電池システムの排出経路のパージ弁などに用いた場合に、システム停止後に低温下に放置した場合にも、フィルター部材の凍結による閉塞を、迅速かつ確実に防止することができ、また、フィルター部材の凍結によるフィルター自体の破損も防止できるとともに、燃料電池システムの起動を迅速に行うことができる。
図1に示したように、燃料電池システム10では、固体高分子型燃料電池本体である燃料電池スタック12を備えている。
また、燃料電池スタック12には、燃料電池スタック12の温度を所定の温度に保つために、冷却水などの冷却流体を循環する冷却系が設けられている。すなわち、ラジエーター34で冷却された冷却流体が、冷却水ポンプ36を介して、冷却流体循環経路38、40を介して、燃料電池スタック12を冷却するように循環される。
このコントロールユニットは、例えば、CPUなどの演算処理装置から構成され、予め記憶装置に別途記憶された種々のデーター、プログラムに基づいて、コンプレッサー18、水素圧力調整弁22、水素循環ポンプ26、空気圧力調整弁32、ラジエーター34、冷却水ポンプ36、パージ弁44、水捨弁46などの作動を制御するように構成されている。
この流体導入経路58は、下部ハウジング54の下方側部から、上方に傾斜してフィルター室60の下方からフィルター室60に至るように形成されている。
また、フィルター62の上部には、上部ハウジング52に、フィルター62を通過した流体を排出する流体排出経路70が形成されており、この流体排出経路70が、排出経路42のパージ弁44に接続されている。また、この流体排出経路70は、上方に延びる第1の流体排出経路70aと、下方に傾斜するように、上部ハウジング52の側部に至る第2の流体排出経路70bとから構成されている。
従って、システム停止後に低温下に放置した場合にも、フィルター部材66の凍結による閉塞を、迅速かつ確実に防止することができ、また、フィルター部材66の凍結によるフィルター62自体の破損も防止できるとともに、燃料電池システムの起動を迅速に行うことができる。
流体導入経路58の水溜め部72の周長L1と、フィルター室60の内径D1の水溜め部72の周長M1に作用する水の表面張力は、
F1=(L1+M1)・γとなる。
W=F1/(G・Cosθ)で求まる。
W=W1+W2である。
従って、フィルター62と下部ハウジング54のフィルター室60の側壁60aとの間に溜まる水W2が、所望の水位K1となるように、フィルター62と下部ハウジング54のフィルター室60の側壁60aとの間の隙間寸法J1を調整し設定すれば良い。
この場合、流体導入経路58の傾斜角θとしては、特に限定されるものではないが、上記の排出効果を考慮すれば、30°~60°の範囲に設定するのが望ましい。
このように構成することによって、水溜め部72の底面72aが、外側に向かって下方に傾斜するように形成されているので、水溜め部72の水が、重力によって流体導入経路58に排出されやすくなる。
また、この場合、フィルター62のフィルター部材66の材質としては、特に限定されるものではなく、フィルター機能を有するものであれば、SUSなどのステンレス製のメッシュ、多孔質のフィルターなど従来公知の種々の材料から構成することができる。
また、この実施例では、フィルター62は、略円筒形状のフィルター本体64としたが、円錐形状、角錐形状、多角形形状など種々の形状とすることができる。
このような撥水処理としては、従来公知の撥水処理が使用可能であって、例えば、ポリテトラフルオロエチレンなどのフッ素樹脂によるフッ素処理などの撥水処理を施すのが、水分が流れやすくなるので望ましい。
このように水溜め部72に、親水処理を施すことにより、水溜め部72に溜る水が球状にならず流れやすくなり、水溜め部72に溜まった水が流体導入経路58に流れ落ちやすくなり、フィルター部材66に付着、残留した水分を効果的に排出することができる。
このようにフィルター62のフィルター部材66の下方部分に、親水処理を施すことにより、フィルター部材66の下方部分に付着、残留した水分が、球状にならず流れやすくなり、重力の作用によって排出しやすくなる。
このようにフィルター62のフィルター部材66の上方部分に、撥水処理を施すことによって、フィルター62のフィルター部材66の上方部分に付着した水分が撥水処理により弾かれて、フィルター部材66の上方部分(メッシュ部分)に残留することなく、重力の作用によって、フィルター部材66の下方部分に引き寄せられるため、フィルター部材66に付着、残留した水分を効果的に排出することができる。
この実施例のフィルター62は、図1~図5に示した実施例1のフィルター62と基本的には同様な構成であり、同一の構成部材には、同一の参照番号を付して、その詳細な説明を省略する。
なお、この場合、フィルター本体64の底部64cの内側底面64eの傾斜角βとしては、特に限定されるものではないが、上記の排出効果を考慮すれば、15°~60°の範囲に設定するのが望ましい。
この実施例のフィルター装置50は、図1~図5に示した実施例1のフィルター装置50と基本的には同様な構成であり、同一の構成部材には、同一の参照番号を付して、その詳細な説明を省略する。
このようにフィルター62のフィルター本体64の底部64cに、フィルター62の内部と水溜め部72とを連通する連通フィルター部材74が形成されているので、水溜め部72の水位が高くなると、フィルター62のフィルター部材66内に滞留した水は、フィルター62のフィルター本体64の底部64cに形成された連通流路76を介して、水溜め部72と連通することになる。
この実施例のフィルター装置50は、図1~図5に示した実施例1のフィルター装置50と基本的には同様な構成であり、同一の構成部材には、同一の参照番号を付して、その詳細な説明を省略する。
なお、図11に示したように、このフィルター部材66の延設部66cの端部66dは、フィルター62のフィルター本体64の底部64cに埋設状態で装着されており、フィルター部材66が抜け落ちるのが防止されるようになっている。
この実施例のフィルター装置50は、図1~図5に示した実施例1のフィルター装置50と基本的には同様な構成であり、同一の構成部材には、同一の参照番号を付して、その詳細な説明を省略する。
この実施例のフィルター装置50は、図1~図5に示した実施例1のフィルター装置50と基本的には同様な構成であり、同一の構成部材には、同一の参照番号を付して、その詳細な説明を省略する。
また、この制御弁80の制御部86は、図13に示したように、駆動部88が挿通された電磁コイル90を備えている。
なお、駆動部88は、プランジャーケース114を備え、このプランジャーケース114内に上下に移動可能に、弁体84を固定したプランジャー116を備えている。そして、吸引子104とプランジャー116との間に、プランジャー116を下方に、すなわち、弁座118の方向に弁体84を付勢する付勢バネ120が介装されている。
このような制御弁80は、電磁コイル90に通電することにより、プランジャー116が、付勢バネ120に抗して吸引子104方向に移動し、プランジャー116に連結された弁体84が、弁座118から離反して、弁口が開放されるようになっている。
W=F1/[(G+A)・Cosθ]となる。
なお、弾性部材138としては、弾性を有するものであれば、上記のようなOリング形状以外にも、皿ばね、コイルばねなど公知の弾性部材を使用することができる。
この実施例のフィルター装置50は、図13に示した実施例6のフィルター装置50と基本的には同様な構成であり、同一の構成部材には、同一の参照番号を付して、その詳細な説明を省略する。
また、図13に示した実施例6のフィルター装置50の弾性部材138は設けられていない。
この実施例のフィルター装置50は、図13に示した実施例6のフィルター装置50と基本的には同様な構成であり、同一の構成部材には、同一の参照番号を付して、その詳細な説明を省略する。
また、図7に示した実施例2のフィルター装置50と同様に、フィルター62の内側底面、すなわち、フィルター本体64の底部64cの内側底面64eが、外側に向かって下方に傾斜するように形成されている。
すなわち、この実施例のフィルター装置50では、水溜め部72だけでなく、連通用間隙150にも水が溜まることになる。しかしながら、排出用連通孔152が設けられているので、流体導入経路58を流れ落ちる水と、連通用間隙150に溜まった水とが、排出用連通孔152を介して、つながることになる。
その結果、この実施例のフィルター装置50では、水溜め部72とフィルター部材66に付着した水との呼び水効果(一回目)だけでなく、流体導入経路58から流れ落ちる水と連通用間隙150に溜まった水とで発生する呼び水効果(二回目)が発生し、合計2回の呼び水効果が発生することになる。
以上、本発明の好ましい実施の態様を説明してきたが、本発明のフィルター装置50を、パージ弁44の上流側に配置した実施の態様を説明してきたが、本発明はこれに限定されることはなく、例えば、図示しないが、水捨弁46の上流側および、空気圧力調整弁32の上流側に配置しても、同様な効果を得られる。
12 燃料電池スタック
14 水素タンク
16 アノード
18 コンプレッサー
20 カソード
22 水素圧力調整弁
24 水素供給流路
26 水素循環ポンプ
28 水素循環流路
28a 分岐経路
30 空気供給流路
32 空気圧力調整弁
34 ラジエーター
36 冷却水ポンプ
38、40 冷却流体循環経路
42 排出経路
44 パージ弁
46 水捨弁
50 フィルター装置
51 フィルターハウジング
52 上部ハウジング
54 下部ハウジング
56 シール部材
58 流体導入経路
58a 上方端部
58b 下面
60 フィルター室
60a 側壁
62 フィルター
64 フィルター本体
64a 縦枠部材
64b 開口部
64c 底部
64d 延設部
64e 内側底面
66 フィルター部材
66a 上端面
66b 下端面
66c 延設部
66d 端部
68 シール部材
70 流体排出経路
70a 第1の流体排出経路
70b 第2の流体排出経路
72 水溜め部
72a 底面
74 連通フィルター部材
76 連通流路
78 水溜め部
80 制御弁
82 弁室
84 弁体
86 制御部
88 駆動部
90 電磁コイル
92 ボビン
94 モールド樹脂
96 磁気フレーム
98 底板部
100 駆動部挿通孔
102 駆動部挿通孔
104 吸引子
106 締結ボルト
108 上板部
110 ボルト挿通孔
112 ナット
114 プランジャーケース
116 プランジャー
118 弁座
120 付勢バネ
122 シール部材
124 シール枠部材
126 蓋部材
128 締結孔
130 締め付け孔
132 ボルト
134 ダイヤフラム固定部材
135 シール部材
136 ダイヤフラム
137 間隙
138 弾性部材
140 連結軸部
142 先端部
144 フィルター固定用開口部
146 シール部材
148 フィルター固定プラグ
150 連通用間隙
152 排出用連通孔
200 燃料電池システム
202 燃料電池スタック
204 水素タンク
206 アノード
208 コンプレッサー
210 カソード
212 水素圧力調整弁
214 水素供給流路
216 水素循環ポンプ
218 水素循環流路
220 空気供給流路
222 空気圧力調整弁
224 ラジエーター
226 冷却水ポンプ
228、230 冷却流体循環経路
232 排出経路
234 パージ弁
Claims (17)
- 流体中に水分を含むシステムの湿潤流体流路に配置されるフィルター装置であって、
前記湿潤流体流路を流れる流体を、フィルター室の下方よりフィルター室に導入する流体導入経路と、
前記流体導入経路からフィルター室に導入された流体を透過させて、流体中の異物を除去するフィルター部材を備え、前記フィルター室内に配置されたフィルターと、
前記フィルターの下方に設けられた水溜め部と、
前記フィルターを通過した流体を排出する流体排出経路と、を備えることを特徴とするフィルター装置。 - 前記フィルターと前記フィルター室の側壁との隙間寸法J1を所定の寸法となるように構成して、水溜め部に溜まる水に作用する表面張力を調整し、これにより、前記水溜め部の水位が所定の水位となるように構成されていることを特徴とする請求項1に記載のフィルター装置。
- 前記水溜め部の底面が 、前記フィルターのフィルター部材の上端面よりも下方に位置するように形成されるとともに、
前記流体導入経路の下面が、前記水溜め部の底面よりも下方に位置するように形成されていることを特徴とする請求項1から2のいずれかに記載のフィルター装置。 - 前記フィルターの内側底面が、外側に向かって下方に傾斜するように形成されていることを特徴とする請求項1から3のいずれかに記載のフィルター装置。
- 前記フィルターの底部に、前記水溜め部と連通する連通フィルター部材が形成されていることを特徴とする請求項1から3のいずれかに記載のフィルター装置。
- 前記水溜め部の底面が、外側に向かって下方に傾斜するように形成されていることを特徴とする請求項1から5のいずれかに記載のフィルター装置。
- 前記フィルターの内側の底面よりも低い側面位置まで、前記フィルターのフィルター部材が延設されていることを特徴とする請求項1から6のいずれかに記載のフィルター装置。
- 前記水溜め部が、前記フィルター室に形成されていることを特徴とする請求項1から7のいずれかに記載のフィルター装置。
- 前記水溜め部が、前記フィルターの内部に形成されていることを特徴とする請求項1から3のいずれかに記載のフィルター装置。
- 前記水溜め部に、親水処理が施されていることを特徴とする請求項1から9のいずれかに記載のフィルター装置。
- 前記フィルターのフィルター部材の下方部分に、親水処理が施されていることを特徴とする請求項1から10のいずれかに記載のフィルター装置。
- 前記フィルターのフィルター部材の上方部分に、撥水処理が施されていることを特徴とする請求項1から11のいずれかに記載のフィルター装置。
- 請求項1から12のいずれかに記載のフィルター装置を備えたことを特徴とする制御弁。
- 前記フィルター室を構成するフィルターハウジングとフィルターとの間に、弾性部材が介装されていることを特徴とする請求項13に記載の制御弁。
- 前記制御弁の弁体とフィルターとが連結されていることを特徴とする請求項13から14のいずれかに記載の制御弁。
- 請求項1から12のいずれかに記載のフィルター装置を、燃料電池システムの湿潤流体流路の排出流路に配置したことを特徴とする燃料電池システム。
- 請求項13から15のいずれかに記載の制御弁を、燃料電池システムの湿潤流体流路の排出流路に配置したことを特徴とする燃料電池システム。
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CA2845777A CA2845777C (en) | 2011-09-08 | 2012-08-30 | Filter device, control valve comprising the filter device, and fuel cell system |
EP12830260.1A EP2754478B1 (en) | 2011-09-08 | 2012-08-30 | System provided with a filter device |
JP2013532551A JP5662584B2 (ja) | 2011-09-08 | 2012-08-30 | フィルター装置、およびフィルター装置を備えた制御弁、ならびに、燃料電池システム |
CN201280043576.5A CN103781530B (zh) | 2011-09-08 | 2012-08-30 | 过滤装置、具备过滤装置的控制阀、以及燃料电池系统 |
US14/343,507 US10363521B2 (en) | 2011-09-08 | 2012-08-30 | Filter device, control valve comprising the filter device, and fuel cell system |
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JP6497882B2 (ja) * | 2014-09-25 | 2019-04-10 | 株式会社ミクニ | 制御弁用フィルタおよび制御弁 |
US10099155B2 (en) * | 2016-02-26 | 2018-10-16 | Crown Iron Works Company | Screen for extractor system |
KR101862773B1 (ko) * | 2016-11-09 | 2018-05-30 | 동아대학교 산학협력단 | 안전밸브 |
JP7064946B2 (ja) * | 2018-05-08 | 2022-05-11 | 日本光電工業株式会社 | 除湿装置 |
CN109119656B (zh) * | 2018-08-24 | 2021-08-24 | 上海汽车集团股份有限公司 | 一种燃料电池电堆的气体循环系统 |
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CA2845777C (en) | 2016-06-07 |
JP5662584B2 (ja) | 2015-02-04 |
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US20140220462A1 (en) | 2014-08-07 |
US10363521B2 (en) | 2019-07-30 |
CA2845777A1 (en) | 2013-03-14 |
EP2754478B1 (en) | 2017-04-12 |
CN103781530A (zh) | 2014-05-07 |
EP2754478A1 (en) | 2014-07-16 |
CN103781530B (zh) | 2015-06-17 |
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