JP5272882B2 - Generated water atomizer for fuel cell vehicles - Google Patents

Description

  The present invention relates to a generated water atomizing device for a fuel cell vehicle for forming generated water generated by a fuel cell into a mist and discharging it to the outside of a vehicle body.

  A fuel cell vehicle is, for example, a fuel cell that generates electric power, a tank that can store generated water generated by the fuel cell when generating electric power, and generated water atomization that discharges water in the tank to the outside of the vehicle body in a mist form It has a device (see Patent Documents 1 and 2). The generated water atomizer is used when the generated water is not preferably discharged in a liquid state. For example, it is used when it is not preferable that the generated water drops on the road surface and freezes in a cold region or in a freezer, or when it is desired to prevent the generated water from dripping on the floor surface and becoming a water pool indoors.

JP 2007-141475 A JP 2009-26498 A

  However, the conventional generated water atomizer has, for example, a pump that sucks and pressurizes water in a tank, and a minute nozzle that jets pressurized water in a mist form (see Patent Document 1). Or it has the nozzle which discharges generated water, and the air pipe which surrounds the nozzle, and the generated water discharged from the nozzle can be atomized by supplying high-temperature air pressurized by an air compressor to the air pipe (See Patent Document 2). However, when water is atomized by the nozzle, the particle size of the water is greatly affected by the inner diameter of the opening at the tip of the nozzle, the chamfered shape of the outer periphery, and the like. For this reason, the nozzle requires high processing accuracy and is expensive. Therefore, an object of the present invention is to provide a generated water atomization device for a fuel cell vehicle that can be configured at low cost.

  In order to solve the above-mentioned problems, the present invention is a generated water atomization device for a fuel cell vehicle having the configuration as described in each claim. According to the first aspect of the present invention, the exhaust pipe having the venturi portion in which a part of the pipe is constricted, and the introduction pipe for introducing the water in the tank in which the generated water can be stored into the exhaust pipe from the tank side are provided. Have. The introduction pipe includes a first pipe member extending from the tank side toward the exhaust pipe, a second pipe member extending from the first pipe member into the exhaust pipe and having a water supply port on the side wall, and a second pipe member It has a draining member that protrudes from the pipe member in the radial direction of the exhaust pipe and is disposed in the vicinity of or inside the venturi. The water supplied to the outer peripheral surface of the second pipe member through the water supply port moves to the end of the draining member and is atomized by the gas flowing in the exhaust pipe at the end of the draining member.

  Therefore, the water in the tank moves to the end of the draining member located near or inside the venturi. Since the gas flowing through the exhaust pipe has a high flow velocity in the venturi, water is cut off by the gas at the end of the draining member and becomes a mist. Further, since the draining member has a simple structure protruding from the second pipe member, it does not require processing accuracy compared to the conventional nozzle and can be configured at a low cost.

  According to invention of Claim 2, the draining member is provided in the front-end | tip part of the 2nd pipe member, plugs up a front-end | tip part, and protrudes in radial direction in the perimeter of a front-end | tip part. Therefore, since the tip part of the second pipe member can be closed by the draining member, the introduction pipe can be configured at a lower cost than the structure in which the tip part of the second pipe member is closed by another member. Further, since the draining member protrudes from the entire circumference of the distal end portion of the second pipe member, the amount of water that can be made into a mist is increased as compared with a form that protrudes only from a part of the distal end portion.

  According to a third aspect of the present invention, the exhaust pipe is connected to the exhaust port of the diluter that mixes the anode side exhaust and the cathode side exhaust of the fuel cell. The first pipe member extends from the tank side toward the exhaust pipe while being in contact with the wall of the diluter or inside the diluter.

  In general, the exhaust from the fuel cell is at a high temperature of, for example, 50 ° C. or higher. Therefore, heat can be given to the first pipe member provided in the diluter from the exhaust gas in the diluter. Alternatively, the heat of the exhaust can be applied to the first pipe member through the wall surface of the diluter that has received heat from the exhaust. The exhaust discharged from the diluter flows through the exhaust pipe, and the heat of the exhaust can be given to the second pipe member provided in the exhaust pipe. Therefore, the problem that the water in the introduction pipe (first pipe member, second pipe member) freezes and the introduction pipe is damaged in a cold district or the like can be suppressed. If the water in the introduction pipe freezes when the fuel cell is stopped, the water in the introduction pipe can be melted by the operation of the fuel cell. Therefore, the generated water atomizer can be used even in cold districts. In addition, the present invention can save power and reduce the size as compared with a mode in which another heat source is used to use the temperature of the exhaust gas.

  According to invention of Claim 4, the 1st pipe member is hold | maintained in the position which left | separated predetermined distance from the inner wall face of the diluter by the bracket attached to the diluter in the diluter. Therefore, when the fuel cell stops in a cold region or the like, the diluter is first cooled by the outside air, and condensation occurs on the inner wall surface of the diluter. Since the first pipe member is insulated by the air layer provided between the wall surface of the diluter and cools later than the wall surface of the diluter. Therefore, the occurrence of condensation on the outer surface of the first pipe member can be suppressed, and damage to the first pipe member due to freezing of the condensation can be suppressed.

  According to the fifth aspect of the present invention, the second pipe member extends substantially along the center line of the cross section of the venturi portion of the exhaust pipe and is substantially parallel to the gas flow flowing in the exhaust pipe. In general, fuel cell vehicles have less noise than engine vehicles. Therefore, there may be a problem when noise is generated by providing the generated water atomizer in the fuel cell vehicle. Since the magnitude of noise (acoustic power) is generally proportional to the eighth power of the flow velocity of the gas flowing in the pipe, if the flow rate of the gas flowing in the exhaust pipe is the same, the flow velocity in the exhaust pipe is non-uniform (difference in flow velocity). ) Is smaller, noise can be reduced.

  On the other hand, the second pipe member of the present invention is substantially parallel to the flow of gas flowing in the exhaust pipe, and therefore hinders the flow of gas in the exhaust pipe as compared to a form orthogonal to the gas flowing in the exhaust pipe. The area becomes smaller. Thereby, the flow velocity of the gas in the exhaust pipe is less likely to be non-uniform compared to the above-described form. Furthermore, since the second pipe member extends along the substantially center line of the cross section of the venturi portion, it is difficult to generate a region with a low flow rate that may occur when extending along the vicinity of the wall surface of the exhaust pipe. Therefore, it is difficult for the second pipe member to make the flow rate of the gas in the exhaust pipe nonuniform. Thus, according to the present invention, noise caused by providing the generated water atomizer can be reduced.

It is a side view of a forklift. It is a block diagram of a fuel cell system. It is sectional drawing of the component of the fuel cell system in the vicinity of the produced water atomizer. It is a partial front view of an introduction pipe. It is a partial sectional view of an introduction pipe and an exhaust pipe in the vicinity of a draining member. FIG. 4 is a perspective view of a part of a diluter and a tank, an introduction pipe and a bracket. It is a partial front view of the introduction pipe concerning other embodiments. It is a perspective view of a part of dilution machine and tank concerning other embodiments, an introduction pipe, and a bracket. It is sectional drawing of the component of the fuel cell system in the vicinity of the produced water atomizer concerning other embodiment. It is a partial sectional view of an introduction pipe and an exhaust pipe in the vicinity of a draining member according to another embodiment.

  One embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a vehicle 10 is a forklift that is used for indoor use, which is one of industrial vehicles, and includes a cargo handling device 12. The cargo handling device 12 includes a mast 12a erected on the front portion of the vehicle body 11, a lift bracket 12b attached to the mast 12a so as to be movable up and down, and a fork 12c attached to the lift bracket 12b. The fork 12c and the lift bracket 12b can be moved up and down by a lift cylinder 12d and a mast 12a attached to the mast 12a.

  As shown in FIG. 1, the vehicle 10 has drive wheels (front wheels) 13 at the front lower portion of the vehicle body 11 and rear wheels 14 at the rear lower portion of the vehicle body 11. A traveling motor 15 that applies power to the drive wheels 13 is provided inside the front side of the vehicle body 11. A fuel cell system 20 including a fuel cell 21 and a hydrogen tank 22 is provided inside the rear side of the vehicle body 11. The electric power generated by the fuel cell 21 is supplied to a hydraulic pump (not shown) serving as a hydraulic pressure source such as the lift cylinder 12d, the traveling motor 15, and the like.

  As shown in FIG. 2, the fuel cell system 20 includes a fuel cell 21, a tank 5 that can store generated water, and a generated water atomizer (vaporizer) 1 that makes the water in the tank 5 into a mist. ing. The fuel cell 21 is, for example, a solid polymer type, and a hydrogen tank 22 is connected to the anode side via a conduit 25. Thereby, hydrogen is supplied from the hydrogen tank 22 to the anode side. A humidifier 24 is connected to the cathode side of the fuel cell 21 via a conduit 27, and a compressor 23 is connected to the humidifier 24 via a conduit 26. Therefore, the air containing oxygen which is the oxidant gas is pressurized by the compressor 23 and supplied to the humidifier 24. Then, moisture is supplied to oxygen in the humidifier 24, and air containing the oxygen is supplied to the cathode side of the fuel cell 21.

  Hydrogen molecules supplied to the anode of the fuel cell 21 become hydrogen ions and move to the cathode side along with moisture contained in the electrolyte membrane. Oxygen molecules in the air supplied to the cathode become oxygen ions and combine with hydrogen ions to form product water. The generated water is supplied to the humidifier 24 through the conduit 28 together with the exhaust of the air supplied to the cathode, and a part of the generated water is extracted by the humidifier 24 and reused. The remaining produced water is discharged to the diluter 4 through the conduit 29 together with the exhaust (exhaust on the cathode side).

  A part of the water or nitrogen on the cathode side of the fuel cell 21 is reversely diffused and moves to the anode side. When these concentrations increase on the anode side, the power generation efficiency decreases. In order to suppress this, a purge gas conduit 30 is connected to the anode side as shown in FIG. The on-off valve 31 provided in the pipe line 30 is controlled and opened by a control device (not shown) when the fuel cell 21 continues to operate for a predetermined time. As a result, moisture and nitrogen accumulated on the anode side are discharged together with hydrogen gas to the diluter 4 side through the purge gas conduit 30 (exhaust on the anode side).

  As shown in FIGS. 2 and 3, the diluter 4 has intake ports 4 a and 4 b to which pipe lines 29 and 30 are connected and an exhaust port 4 c to which the exhaust pipe 3 is connected. A tank 5 is integrally provided below the diluter 4 via a partition plate 5a, and an opening hole 5a1 is formed in the partition plate 5a. Therefore, the cathode-side and anode-side exhaust discharged from the fuel cell 21 is separated into gas and liquid (product water) in the diluter 4 due to the difference in specific gravity, and the product water that has become liquid passes through the opening hole 5a1. Stored in the tank 5. Further, in the diluter 4, the concentration of hydrogen contained in the anode-side exhaust can be diluted with air contained in the cathode-side exhaust. The gas in the diluter 4 is discharged to the exhaust pipe 3.

  As shown in FIG. 3, the generated water atomizer 1 has an introduction pipe 2 that extends from a tank 5 to an exhaust pipe 3. The introduction pipe 2 is L-shaped and integrally includes a first pipe member 2a, a second pipe member 2b, and a draining member 2c. The first pipe member 2a includes a first part 2a1 extending up and down in the tank 5, a second part 2a2 extending up from the first part 2a1 in the diluter 4, and an upper end of the second part 2a2. And a third portion 2a3 extending in the horizontal direction toward the exhaust pipe 3.

  As shown in FIGS. 3 and 6, the first part 2a1 of the first pipe member 2a has a lower end located below the surface of the water stored in the tank 5, and the upper end is an opening 5a1 in the partition plate 5a. Located in. The second part 2a2 is held by the bracket 6 at a position away from the inner wall surface 4d of the diluter 4 by a predetermined distance (for example, 0.5 to 2 times the diameter of the exhaust port 4c). The bracket 6 has an attachment portion 6a attached to the inner wall surface 4d of the diluter 4, and an extension portion 6b extending substantially perpendicularly from the attachment portion 6a, and a second part is provided at the end of the extension portion 6b. 2a2 is welded.

  As shown in FIG. 3, the second pipe member 2b extends in the horizontal direction from the third portion 2a3 of the first pipe member 2a, and is substantially on the cross-sectional center line of the cylindrical exhaust pipe 3 (preferably on the cross-sectional center line). Is located. As shown in FIG. 4, a plurality of water supply ports 2b1 are formed in the side wall near the tip of the second pipe member 2b (for example, a position within 5 mm from the tip). The water supply ports 2b1 are, for example, circular holes and are formed at predetermined intervals in the circumferential direction.

  As shown in FIG. 4, the draining member 2c has a disk shape having a diameter larger than the diameter of the second pipe member 2b, and is attached to the end of the second pipe member 2b. The draining member 2c has a blocking portion 2c1 that closes the tip end portion of the second pipe member 2b, and a protrusion 2c2 that protrudes radially outward from the second pipe member 2b. The protrusion 2c2 protrudes substantially vertically from the entire circumference of the second pipe member 2b. The draining member 2c is installed in the vicinity of the venturi portion 3b of the exhaust pipe 3 as shown in FIGS.

  As shown in FIGS. 3 and 5, the exhaust pipe 3 integrally includes an inlet side pipe portion 3 a, a venturi portion 3 b, and a spread pipe portion 3 c. The inlet side pipe portion 3 a is cylindrical and has substantially the same inner and outer diameters in the entire length, and one end portion 3 a 1 of the inlet side pipe portion 3 a is connected to the exhaust port 4 c of the diluter 4. The venturi portion 3b is a portion where a part of the inner peripheral diameter of the tube is constricted, and has an inner peripheral diameter smaller than that of the inlet side tube portion 3a. The expanding pipe portion 3c has an inner diameter that gradually increases from the venturi portion 3b toward the outlet portion 3c1. Therefore, the gas that can flow through the exhaust pipe 3 is fastest in the venturi portion 3b or in the vicinity of the venturi portion 3b.

  As shown in FIG. 3, the pressure in the exhaust pipe 3 is lower than the pressure in the diluter 4 and the tank 5 due to pressure loss. The venturi portion 3b has a lower pressure than the inlet side tube portion 3a. The water stored in the tank 5 using the pressure difference due to the pressure loss can be sucked into the introduction pipe 2. Water flows in the first pipe member 2a and the second pipe member 2b of the introduction pipe 2 and moves from the inside of the second pipe member 2b to the outer peripheral surface side through the water supply port 2b1 as shown in FIG. .

  Next, as shown in FIG. 5, the water flows in the axial direction toward the draining member 2c along the outer peripheral surface of the second pipe member 2b, and flows in the radial direction along the protrusion 2c2 of the draining member 2c. It moves to the outer peripheral end of 2c. The water that has reached the outer peripheral end of the draining member 2c is cut out by the exhaust gas flowing around the draining member 2c to become a mist. In particular, in the vicinity of the venturi portion 3b, the flow rate of the exhaust gas is high, so the diameter of the water cut from the draining member 2c is small. Thereby, water becomes mist-like and is discharged from the exhaust pipe 3 into the atmosphere outside the vehicle body 11 (see FIG. 1) together with the exhaust gas.

  As described above, the generated water atomizer 1 has the exhaust pipe 3 and the introduction pipe 2 each including the venturi portion 3b as shown in FIG. The introduction pipe 2 protrudes in the radial direction of the exhaust pipe 3 from the first pipe member 2a, the second pipe member 2b provided with the water supply port 2b1, and the venturi portion 3b. The draining member 2c is provided. The water supplied to the outer peripheral surface of the second pipe member 2b through the water supply port 2b1 moves to the end of the draining member 2c and is atomized by the gas flowing in the exhaust pipe 3 at the end of the draining member 2c. The

  Therefore, the water in the tank 5 moves to the end of the draining member 2c located in the vicinity of the venturi portion 3b. Since the gas flowing in the exhaust pipe 3 has a high flow velocity in the venturi portion 3b, water is cut off by the gas at the end of the draining member 2c and becomes a mist. Since the draining member 2c has a simple structure protruding from the second pipe member, it does not require processing accuracy compared to the conventional nozzle and can be configured at a low cost.

  Further, as shown in FIG. 4, the draining member 2c is provided at the distal end portion of the second pipe member 2b, closes the distal end portion, and projects radially in the entire circumference of the distal end portion. Therefore, since the distal end portion of the second pipe member 2b can be closed by the draining member 2c, the introduction pipe 2 can be configured at a lower cost than a structure in which the distal end portion of the second pipe member 2b is closed by another member. Moreover, since the draining member 2c protrudes from the entire circumference of the distal end portion of the second pipe member 2b, the amount of water that can be made into a mist is increased as compared with a configuration that protrudes from only a part of the distal end portion.

  2 and 3, the exhaust pipe 3 is connected to an exhaust port 4c of the diluter 4 for mixing the anode side exhaust and the cathode side exhaust of the fuel cell 21. The first pipe member 2 a extends from the tank 5 side toward the exhaust pipe 3 inside the diluter 4.

  The exhaust from the fuel cell 21 is at a high temperature of, for example, 50 ° C. or higher. Therefore, heat can be applied from the exhaust gas in the diluter 4 to the first pipe member 2 a provided in the diluter 4. The exhaust discharged from the diluter 4 flows in the exhaust pipe 3, and the heat of the exhaust can be given to the second pipe member 2 b provided in the exhaust pipe 3. Therefore, the problem that water in the introduction pipe 2 freezes and the introduction pipe 2 is damaged in a cold district or the like can be suppressed. If the water in the introduction pipe 2 freezes when the fuel cell 21 is stopped, the water in the introduction pipe 2 can be melted by the operation of the fuel cell 21. Therefore, the generated water atomizer 1 can be used even in cold regions. This embodiment can save power and can be reduced in size as compared with a configuration using another heat source in order to use the temperature of the exhaust gas.

  Further, as shown in FIG. 6, the first pipe member 2 a is held in the diluter 4 at a position away from the inner wall surface 4 d of the diluter 4 by a predetermined distance by a bracket 6 attached to the diluter 4. Therefore, when the fuel cell 21 is stopped in a cold region or the like, the diluter 4 is first cooled by the outside air, and condensation occurs on the inner wall surface 4 d of the diluter 4. Since the first pipe member 2a is insulated by the air layer provided between the wall surface 4d of the diluter 4 and cools later than the wall surface 4d of the diluter 4. Therefore, the occurrence of condensation on the outer surface of the first pipe member 2a is suppressed, and damage to the first pipe member 2a due to freezing of the condensation can be suppressed.

  Moreover, the 2nd pipe member 2b is extended along the cross-sectional substantially center line of the venturi part 3b of the exhaust pipe 3, substantially parallel to the flow of the gas which flows through the inside of the exhaust pipe 3, as shown in FIG. In general, the fuel cell vehicle 10 has less noise than the engine vehicle. Therefore, there may be a problem when noise is generated by providing the generated water atomizer 1 in the fuel cell vehicle 10. In addition, since the magnitude of noise (acoustic power) is generally proportional to the eighth power of the flow velocity of the gas flowing in the pipe, if the flow rate of the gas flowing in the exhaust pipe 3 is the same, the flow velocity in the exhaust pipe 3 is not affected. The smaller the uniformity (flow velocity difference), the smaller the noise.

  On the other hand, the second pipe member 2b of the present embodiment is substantially parallel to the flow of gas flowing in the exhaust pipe 3, so that the exhaust pipe 3 is compared with a form orthogonal to the gas flowing in the exhaust pipe 3. The area that obstructs the flow of the gas in the inside becomes small, so that the flow velocity of the gas in the exhaust pipe 3 is less likely to be non-uniform compared to the above-described form. Furthermore, since the second pipe member 2b extends along the substantially center line of the cross section of the venturi portion 3b, it is difficult to generate a region with a low flow rate that may occur when extending along the vicinity of the wall surface of the exhaust pipe 3. . Therefore, it is difficult for the second pipe member 2b to make the flow velocity of the gas in the exhaust pipe 3 uneven. Thus, according to the present embodiment, noise caused by providing the generated water atomizer 1 can be reduced.

  Further, the introduction pipe 2 is held at a position away from the inner wall surface 4d as shown in FIG. Therefore, even when the gas in the diluter 4 hits the first pipe member 2a of the introduction pipe 2 and the non-uniformity in the gas flow velocity becomes large, the non-uniformity is the rectifying portion 4e between the introduction pipe 2 and the inner wall surface 4d. Can be smaller. And since the non-uniformity of the flow velocity flowing from the inside of the diluter 4 to the exhaust pipe 3 is reduced, noise that can be generated in the exhaust pipe 3 is reduced. Further, as shown in FIG. 2, no muffler is provided on the downstream side of the exhaust pipe 3. Therefore, the problem that the water contained in the exhaust of the exhaust pipe 3 is liquefied by the muffler does not occur.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and may be the following form. For example, the second pipe member 2b shown in FIG. 4 has a circular hole-shaped water supply port 2b1. However, the second pipe member 2b may have a slit-shaped water supply port 2b2 extending from the tip as shown in FIG. 7 instead of the water supply port 2b1 shown in FIG.

  The first pipe member 2 a of the introduction pipe 2 shown in FIG. 6 is held at a position away from the inner wall surface 4 d of the diluter 4 by a predetermined distance by the bracket 6. However, the first pipe member 2a extends with the bracket 7 shown in FIG. 8 in contact with the inner wall surface 4d of the diluter 4, and the lower part passes through the through hole 5a2 formed in the partition plate 5a and is stored in the tank 5. It may be located below the surface of the water. According to this embodiment, the first pipe member 2a can receive heat directly from the exhaust in the diluter 4, or can receive heat from the exhaust through the wall surface of the diluter 4 that has received heat from the exhaust.

  The first pipe member 2 a of the introduction pipe 2 shown in FIG. 3 extends from the tank 5 to the exhaust pipe 3 through the diluter 4. However, instead of the introduction pipe 2, an introduction pipe 8 shown in FIG. The introduction pipe 8 includes a first pipe member 8a, a second pipe member 8b, and a draining member 8c. The first pipe member 8a includes a first part 8a1 extending from the tank 5 toward the exhaust pipe 3 while being in contact with the outer wall surface of the diluter 4, and a second part 8a2 extending along the outer peripheral surface of the exhaust pipe 3. have. A connection port 8 a 3 formed at the lower end of the first part 8 a 1 is connected to a drain port 5 b formed in the tank 5. The first pipe member 8a is preferably prevented from being exposed to the outside air by being covered with a heat insulating material (not shown). Thereby, the 1st pipe member 8a can receive the heat of exhaust via the wall surface of the diluter 4 which received heat from exhaust.

  As shown in FIG. 9, the second pipe member 8b includes a first part 8b1 extending in the radial direction in the inlet side pipe part 3a of the exhaust pipe 3, and a second part extending in the axial direction from the first part 8b1. 8b2. The second portion 8b2 extends along the substantially center line of the cross section of the cylindrical exhaust pipe 3. A water supply port 8b3 through which water can be supplied from the inside of the second part 8b2 to the outer peripheral surface is formed at the tip of the second part 8b2. The draining member 8c is provided at the end of the second pipe member 8b, protrudes in the radial direction with respect to the second pipe member 8b, and is positioned in the vicinity of the venturi part 3b.

  The introduction pipe 2 shown in FIG. 5 has a second pipe member 2b extending in the axial direction with respect to the exhaust pipe 3, and a draining member 2c protruding from the second pipe member 2b in the radial direction with respect to the exhaust pipe 3. doing. However, instead of the introduction pipe 2 shown in FIG. 5, an introduction pipe 9 shown in FIG. 10 may be provided. The introduction pipe 9 has a first pipe member 9a, a second pipe member 9b, and a draining member 9c. The first pipe member 9 a extends from the tank side to the outer peripheral surface of the exhaust pipe 3. The second pipe member 9 b extends from the outer peripheral surface of the exhaust pipe 3 to the inner peripheral side of the exhaust pipe 3 through the wall surface of the exhaust pipe 3.

  As shown in FIG. 10, the distal end portion of the second pipe member 9b extends diagonally with respect to the exhaust pipe 3 from the upstream side to the downstream side (rightward in the figure) in the venturi portion 3b. A water supply port 9b1 through which water can be supplied from the inside of the second tube member 9b to the outer peripheral surface is formed at the tip of the second tube member 9b. The draining member 9c is provided at the end of the second pipe member 9b, protrudes in the radial direction with respect to the second pipe member 9b, and extends in the radial direction and obliquely in the axial direction with respect to the exhaust pipe 3. Yes.

  As shown in FIG. 2, the draining member 2 c of the introduction pipe 2 is provided in the exhaust pipe 3, and the exhaust pipe 3 is connected to the exhaust side of the fuel cell 21. However, it may have an exhaust pipe connected to the compressor, and the drainage member of the introduction pipe may be installed near or inside the venturi formed in the exhaust pipe.

  The protrusion 2c2 of the draining member 2c shown in FIGS. 4 and 7 has a planar shape with parallel upper and downstream surfaces (left and right surfaces in the drawings). However, a chamfer (tapered surface) may be provided on the outer peripheral portion of the downstream surface (right surface in the drawing) of the protrusion 2c2. Thereby, the diameter of the water made into mist in the edge part of the draining member 2c can be made still smaller. 4 and 7 have the water supply ports 2b1 and 2b2, but in order to prevent the amount of water discharged from the water supply ports 2b1 and 2b2 from being excessively large, A diaphragm may be provided in a part.

  4 and 7, water supply ports 2b1 and 2b2 are formed in the vicinity of the tip of the second pipe member 2b, and a draining member 2c is provided at the tip of the second pipe member 2b. . However, one or more holes are formed in the second pipe member, and one or more holes project radially from the outer surface of the second pipe member to the exhaust pipe on the downstream side (right side in the figure) of each hole. A water draining member may be provided.

  The exhaust pipe 3 shown in FIG. 3 has an inlet side pipe part 3a, a venturi part 3b, and a spread pipe part 3c. However, the exhaust pipe may not have the inlet side pipe part but may have only the venturi part and the spreading pipe part. The vehicle 10 shown in FIG. 1 is an industrial vehicle, but may be a vehicle such as an automobile or a bus.

DESCRIPTION OF SYMBOLS 1 ... Generated water atomizer 2, 8, 9 ... Introducing pipe 2a, 8a, 9a ... 1st pipe member 2b, 8b, 9b ... 2nd pipe member 2b1, 2b2, 9b1 ... Water supply port 2c, 8c, 9c ... Drainage member 3 ... exhaust pipe 3b ... venturi part 4 ... dilutor 4c ... exhaust port 4d ... inner wall surface 5 ... tank 5a ... partition plate 6, 7 ... bracket 10 ... fuel cell vehicle 11 ... vehicle body 12 ... loading device 13 ... drive wheel DESCRIPTION OF SYMBOLS 15 ... Motor 20 ... Fuel cell system 21 ... Fuel cell 22 ... Hydrogen tank 23 ... Compressor 24 ... Humidifier

Claims (5)

A generated water atomization device for a fuel cell vehicle for making the generated water generated by the fuel cell into a mist and discharging it to the outside of the vehicle body,
An exhaust pipe having a venturi portion in which a part of the inner peripheral diameter of the pipe is constricted, and an introduction pipe for introducing water in the tank in which the generated water can be stored from the tank side to the exhaust pipe,
The introduction pipe includes a first pipe member extending from the tank side toward the exhaust pipe, and a second pipe extending from the first pipe member into the exhaust pipe and provided with a water supply port on a side wall portion. A draining member that projects from the second pipe member in the radial direction of the exhaust pipe and is disposed in the vicinity of or inside the venturi portion,
The draining member has a blocking portion that closes an end portion of the second pipe member, and a protrusion that protrudes radially outward from the second pipe member on the downstream side of the water supply port,
The water supplied to the outer peripheral surface of the second pipe member through the water supply port moves to the end of the protrusion of the drainage member and is fogged by the gas flowing in the exhaust pipe at the end of the protrusion A water atomization device for a fuel cell vehicle characterized by being made into a shape.

It is the production | generation water atomization apparatus of the fuel cell vehicle of Claim 1, Comprising:
A water atomizing device for a fuel cell vehicle, characterized in that the draining member is provided at a distal end portion of the second pipe member, closes the distal end portion, and protrudes in the radial direction along the entire circumference of the distal end portion. A generated water atomization device for a fuel cell vehicle according to claim 1 or 2,
The exhaust pipe is connected to the exhaust port of a diluter that mixes the exhaust on the anode side and the exhaust on the cathode side of the fuel cell,
The first pipe member extends from the tank side toward the exhaust pipe inside the diluter or in contact with the wall surface of the diluter, and is a generated water atomizer for a fuel cell vehicle. It is the production | generation water atomization apparatus of the fuel cell vehicle of Claim 3, Comprising:
The first pipe member is held in a diluter by a bracket attached to the diluter at a position away from the inner wall surface of the diluter by a predetermined distance. apparatus. It is the production | generation water atomization apparatus of the fuel cell vehicle as described in any one of Claims 1-4,
The generated water atomizing device for a fuel cell vehicle, characterized in that the second pipe member extends substantially along the center line of the cross section of the venturi portion of the exhaust pipe and is substantially parallel to the flow of the gas flowing in the exhaust pipe .

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