JP6580368B2 - garage - Google Patents

Description

  The present invention relates to a garage.

  Conventionally, a fuel cell vehicle (FCV) that travels by driving an electric motor with electric power generated by a fuel cell is known. In a fuel cell vehicle, since the fuel cell generates power using hydrogen fuel, a fuel tank for storing the hydrogen fuel is mounted on the vehicle.

  This type of fuel tank is provided with a release valve (safety valve) that forcibly releases the hydrogen fuel in the tank to the outside when the tank becomes hot due to a fire around the vehicle. Therefore, when a fuel cell vehicle is parked in the garage, if a fire occurs around the garage and the garage becomes hot, the release valve is activated and hydrogen fuel is released from the fuel tank into the garage. Become.

  By the way, when hydrogen fuel is discharged into the garage in a situation where the vehicle entrance / exit of the garage is closed by the shutter device, the hydrogen fuel stays in the garage. Therefore, as a countermeasure in such a case, Patent Document 1 discloses a configuration in which a hydrogen sensor is provided around the fuel tank and control is performed to open the shutter device when hydrogen is detected by the hydrogen sensor. ing. According to this, when hydrogen fuel is released from the fuel tank into the garage, the shutter device opens to open the vehicle entrance, so that the hydrogen fuel is discharged from the garage to the outside through the vehicle entrance. Can do.

Japanese Patent No. 5589623

  However, in the technique disclosed in Patent Document 1, when the power supply cannot be used due to a power failure caused by a fire, the shutter device cannot be opened, so that the hydrogen fuel discharged into the garage is passed through the vehicle entrance / exit. It cannot be discharged outdoors. Therefore, in such a case, hydrogen fuel will stay in the garage.

  Moreover, the above problems are not limited to the case where a fuel cell vehicle using hydrogen fuel as a fuel is parked in a garage, but a case where a vehicle (vehicle) using other gaseous fuel such as natural gas as a fuel is parked. There is a problem that can occur in the same way.

  The present invention has been made in view of the above circumstances, and provides a garage that can discharge gaseous fuel discharged from a vehicle to the outdoors even when the use of a power source becomes impossible due to a power failure or the like. This is the main purpose.

  In order to solve the above-mentioned problem, a garage according to a first aspect of the present invention is a garage in which a vehicle running using gaseous fuel is parked, and the gaseous fuel released from the vehicle at an abnormally high temperature of the garage is discharged from within the garage. A discharge passage for discharging to the outdoors, a first closing member provided in a state where the discharge passage is closed, the first closing member is held in the closed state, and melts or deforms when the temperature exceeds a predetermined temperature. Holding means for releasing the holding state, and when the holding by the holding means is released, the first closing member shifts to an open state in which the discharge passage is opened.

  According to the present invention, the discharge passage is provided for discharging the gaseous fuel released from the vehicle to the outdoors when the garage is abnormally hot due to a fire or the like. The discharge passage is normally closed by a first closing member, and the closed state is held by holding means. And when this holding means becomes more than predetermined temperature, it melt | dissolves or deform | transforms, the holding state is cancelled | released, and the 1st closing member transfers to the open state which opens a discharge channel | path with the cancellation | release. According to such a configuration, when the inside of the garage becomes abnormally hot due to a fire or the like and the holding means reaches a predetermined temperature or higher, the holding state by the holding means is released and the first closing member shifts to the open state. Thus, even when the power supply cannot be used, the discharge passage can be opened, and as a result, the gaseous fuel released from the vehicle can be discharged to the outside through the opened discharge passage.

  A garage according to a second aspect of the present invention is the garage according to the first aspect, wherein the vehicle has a fuel tank for storing the gaseous fuel, and the fuel tank receives the gaseous fuel from the tank when a predetermined discharge temperature is reached. A discharge valve for discharging is provided, and the predetermined temperature is set to substantially the same temperature as the discharge temperature.

  According to the present invention, the temperature (predetermined temperature) at which the holding of the first closing member by the holding means is released, that is, the temperature at which the discharge passage is opened is the temperature at which the release valve provided in the fuel tank operates (release temperature). ), The discharge passage can be opened in accordance with the operation of the discharge valve and the discharge of the gaseous fuel from the fuel tank into the garage. Thereby, when gaseous fuel is discharged | emitted from a fuel tank, it becomes possible to discharge | emit the gaseous fuel outside, without making it stay in a garage.

  A garage of a third invention is the garage according to the first or second invention, wherein the holding means holds the first closing member in the closed state against gravity acting on the first closing member. When the holding by the holding means is released, the first closing member shifts to the open state by the action of the gravity.

  According to the present invention, when the holding state of the first closing member by the holding means is released, the first closing member shifts to the open state by gravity acting on the first closing member. In this case, since it is not necessary to provide a member for applying a force toward the opening side when the first closing member is shifted to the opened state, the configuration can be simplified.

  A garage according to a fourth aspect of the present invention is the garage according to any one of the first to third aspects, wherein the discharge passage is closed when the ambient temperature becomes a second temperature higher than the first temperature as the predetermined temperature. It is characterized by comprising two closing members.

  According to the present invention, when the temperature around the discharge passage reaches the first temperature due to a fire around the garage, the holding of the first closing member by the holding means is released and the discharge passage is opened. Thereby, the gaseous fuel released from the vehicle is discharged outdoors through the discharge passage. Thereafter, when the temperature around the discharge passage rises and reaches a second temperature higher than the first temperature, the discharge passage is closed by the second closing member. In this case, after discharging the gaseous fuel to the outside through the discharge passage, it is possible to suppress the spread of fire into the garage through the discharge passage.

  According to a fifth aspect of the garage, in the fourth aspect of the invention, the second closing member is disposed on the outdoor side of the first closing member.

  According to the present invention, since the second closing member is arranged on the outdoor side of the first closing member, when a fire occurs on the outdoor side of the garage (for example, a neighboring house adjacent to the building, etc.), 2 The closure member is susceptible to the heat from the fire. For this reason, when a fire occurs on the outdoor side of the garage, the discharge passage can be more reliably closed by the second closing member, and as a result, the spread of fire through the discharge passage can be more reliably suppressed. It becomes.

  Moreover, in this structure, since the 1st closing member is arrange | positioned inside the garage rather than the 2nd closing member, a 1st closing member and by extension, a holding means become easy to be influenced by the temperature in a garage. For this reason, it is convenient when the temperature (predetermined temperature) for releasing the holding by the holding means is set in accordance with the discharge temperature at which the gaseous fuel is released from the vehicle (fuel tank) in the garage.

  The garage of the sixth invention is the garage according to any one of the first to fifth inventions, wherein the discharge passage is provided on a ceiling side in the garage, and at least a part of the ceiling surface of the garage is the discharge. It is an inclined surface portion that is inclined upward toward the passage.

  Some gaseous fuels used in vehicles have a specific gravity smaller (that is, lighter) than air. When such gaseous fuel is released from the vehicle, it will rise in the garage. Therefore, in the present invention, paying attention to this point, the discharge passage is provided on the ceiling side in the garage, and at least a part of the ceiling surface of the garage is an inclined surface portion that is inclined upward toward the discharge passage. In this case, when the gaseous fuel released from the vehicle rises and reaches the ceiling surface, the gaseous fuel is guided to the discharge passage along the inclined surface portion. For this reason, gaseous fuel can be discharged | emitted smoothly outdoors.

  Examples of gaseous fuel having a specific gravity smaller than that of air include hydrogen fuel used in a vehicle (fuel cell vehicle) equipped with a fuel cell.

  In a garage of a seventh invention according to the sixth invention, as the inclined surface portion, a first inclined surface portion inclined upward along the depth direction of the garage, and a first inclined surface inclined upward along the width direction of the garage. It has 2 inclined surface parts.

  According to the present invention, the first inclined surface portion inclined in the garage depth direction and the second inclined surface portion inclined in the garage width direction are provided as the inclined surface portions inclined upward toward the discharge passage. In this case, the gaseous fuel that has reached the ceiling surface (a gaseous fuel having a specific gravity smaller than that of air) is guided to the discharge passage along each of the inclined surface portions, so that the gaseous fuel can be discharged more smoothly outdoors. .

The front view which shows the garage periphery in a building. The longitudinal cross-sectional view which shows the garage periphery in a building. The longitudinal cross-sectional view which shows the internal structure of a discharge member. The figure for demonstrating the effect | action regarding a discharge member. The figure which shows the garage periphery in other embodiment. The figure which shows the garage periphery in other embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, the garage of the present invention is embodied as a so-called inner garage provided integrally in a building. FIG. 1 is a front view showing the vicinity of a garage in a building. FIG. 2 is a longitudinal sectional view showing the vicinity of a garage in a building. 2 corresponds to a cross-sectional view taken along line AA in FIG.

  As shown in FIGS. 1 and 2, a building 10 such as a house is a two-story building having a first floor part 11 and a second floor part 12. The first-floor part 11 is provided with a first-floor room 14 and a garage 15, and the second-floor part 12 is provided with second-floor rooms 16 and 17.

  The garage 15 is a so-called inner garage (attached garage) provided integrally with the building 10. The garage 15 has a parking space 19 in which the vehicle 18 can be parked. The three sides of the garage 15 are surrounded by garage side walls 21, and these garage side walls 21 partition the first floor room 14 and the outside.

  A garage opening 23 as a vehicle entrance is formed on one side of the garage 15. Through this garage opening 23, the vehicle 18 and people can enter and leave the garage 15. The garage opening 23 is formed in the garage front wall 24 provided on the front surface of the garage 15.

  The garage 15 is provided with an electric shutter device 25 for opening and closing the garage opening 23. The shutter device 25 includes a shutter curtain 26 that opens and closes the garage opening 23 by moving up and down, and a shutter box 27 that houses the shutter curtain 26 in a wound state. The shutter box 27 (shutter device 25) is attached to the back surface of a hanging wall 29 provided above the garage opening 23. The drooping wall 29 is formed by a part of the garage front wall portion 24.

  Here, in the present embodiment, a fuel cell vehicle (FCV) is assumed as the vehicle 18 parked in the garage 15. The fuel cell vehicle (vehicle 18) includes a fuel cell 31 as a generator and a fuel tank 32 that stores hydrogen fuel supplied to the fuel cell 31.

  The fuel tank 32 is provided with a release valve 34 for releasing hydrogen fuel from the fuel tank 32 when the tank temperature becomes equal to or higher than a predetermined temperature (hereinafter referred to as a release temperature T1). The discharge valve 34 is a melting valve. The release valve 34 has a fusible alloy that melts at a temperature equal to or higher than the discharge temperature T1, and the valve is opened when the fusible alloy melts. In this embodiment, the discharge temperature T1 is set in the range of 110 ° C to 115 ° C.

  By the way, when hydrogen fuel is released from the vehicle 18 (fuel tank 32) in the garage 15 in a situation where the garage opening 23 is closed by the shutter curtain 26, the hydrogen fuel may stay in the garage 15. is assumed. Therefore, in this embodiment, in order to avoid such a situation, a characteristic configuration for discharging hydrogen fuel from the garage 15 to the outdoors is provided. Hereinafter, this characteristic configuration will be described.

  The garage 15 is provided with a discharge member 36 for discharging hydrogen fuel released from the fuel tank 32 of the vehicle 18 to the outdoors. The discharge member 36 is formed in a rectangular tube shape from a metal material, and is provided in a state of being inserted through an insertion hole 39 formed in the garage front wall portion 24. The inner space of the discharge member 36 communicates the inside of the garage 15 and the outdoors, and this inner space serves as a discharge passage 37 for discharging hydrogen fuel to the outdoors.

  The discharge member 36 is disposed on the ceiling side of the garage 15 in the garage front wall portion 24, and is fixed to the ceiling surface 41 of the garage 15 in the arrangement state. In this case, the discharge member 36 is arranged in a state where it does not protrude from the insertion hole 39 to the outdoor side, and a part of the discharge member 36 protrudes from the insertion hole 39 toward the garage 15 inside (rear side). The protruding portion is fixed to a ceiling surface 41 (specifically, a horizontal surface 41b described later) of the garage 15. Further, the discharge member 36 is disposed next to the shutter box 27 so as to avoid interference with the shutter box 27.

  The ceiling surface 41 of the garage 15 is an inclined surface 41 a that is inclined upward toward the discharge passage 37. The inclined surface 41a is inclined upward in the depth direction of the garage 15 from the back side of the garage toward the garage opening 23 side. Specifically, the inclined surface 41 a is formed on the ceiling surface 41 in a range from the back end portion of the garage 15 in the garage depth direction to the rear end portion of the discharge member 36 (discharge passage 37). A horizontal surface 41b is formed closer to the garage opening 23 than 41a. A discharge member 36 is fixed to the horizontal surface 41b.

  Next, the internal configuration of the discharge member 36 will be described with reference to FIG. FIG. 3 is a longitudinal sectional view showing the internal configuration of the discharge member 36.

  As shown in FIG. 3, a closing plate 43 is provided inside the discharge member 36 in a state where the discharge passage 37 is closed. The closing plate 43 is formed in a rectangular plate shape (specifically, a rectangular flat plate shape) from a metal material. The lateral width of the closing plate 43 is the same as the passage width of the discharge passage 37, and the vertical height thereof is larger than the passage height of the discharge passage 37. The closing plate 43 corresponds to a first closing member.

  The closing plate 43 has a rotation shaft portion 44 at a lower end portion (one end portion), and is attached to the discharge member 36 via the rotation shaft portion 44 so as to be rotatable. The rotation shaft portion 44 is a shaft portion that extends in the width direction of the closing plate 43, and is spanned between the side plate portions 36 a facing the discharge member 36. In this case, the rotation shaft portion 44 is located at the lower end portion in the discharge passage 37 and is located in the center portion when viewed in the passage extending direction (direction in which the discharge passage 37 extends).

  The closing plate 43 is rotated from the rotation shaft 44 as a rotation center, and is closed from the closed state (the state shown in FIG. 3) where the discharge passage 37 is closed to the opened state (FIG. 4A). It is possible to shift to the state. In the closed state, the closing plate 43 is inclined upward from the outdoor side toward the inside of the garage 15 in the passage extending direction.

  The discharge member 36 is provided with a holding member 46 (corresponding to a holding means) that holds the closing plate 43 in a closed state. The holding member 46 is attached to the side plate portion 36a of the discharge member 36, and engages and supports (holds) the upper end portion of the closing plate 43 in the closed state. Specifically, since the closing plate 43 is inclined in the closed state as described above, the closing plate 43 in the closed state is inclined to the side where the closing plate 43 is inclined (in other words, the opened state side). The force (gravity) is acting. The holding member 46 engages and supports the upper end portion of the closing plate 43 so that the closing plate 43 in the closed state does not tilt, thereby holding the closed state of the closing plate 43. The holding member 46 is disposed at the end of the garage 15 in the discharge passage 37.

  The holding member 46 has a temperature fuse. The holding member 46 includes a support portion 46a that supports the upper end portion of the closing plate 43, and a melting portion 46b that melts at a predetermined temperature (hereinafter referred to as a melting temperature T2) or higher. The support portion 46a is rotatably attached to the side plate portion 36a of the discharge member 36, and by this rotation, a support state (state of FIG. 3) for supporting the closing plate 43 and a support release state for releasing the support thereof. (The state shown in FIG. 4A). The support part 46a is fixed to the side plate part 36a via the melting part 46b in the support state. Moreover, the support part 46a is arrange | positioned sideways in the support state.

  In the above configuration, when the melting portion 46b of the holding member 46 is melted, the support portion 46a is rotated downward by gravity and becomes vertical and shifts to a support release state. As a result, the supporting state (holding state) of the closing plate 43 by the support portion 46a (and thus the holding member 46) is released, so that the closing plate 43 is rotated downward by its own weight to be opened, and the discharge passage 37 is opened. (See FIG. 4A). In the open state of the closing plate 43, the closing plate 43 is in a sideways state at the bottom of the discharge passage 37.

  Here, in the holding member 46 described above, the melting temperature T2 of the melting portion 46b is set to substantially the same temperature as the discharge temperature T1 (110 ° C. to 115 ° C.) at which the hydrogen fuel is released from the fuel tank 32. In the present embodiment, the melting temperature T2 is set to 120 ° C. However, the melting temperature T2 does not necessarily need to be set to 120 ° C., and if the temperature is substantially the same as the discharge temperature T1 (for example, a temperature within a range of ± 10 ° C. with respect to the discharge temperature T1), the other temperature May be set. In this case, the melting temperature T2 corresponds to “predetermined temperature” and “first temperature” recited in the claims.

  In addition to the closing plate 43, a thermal expansion refractory material 48 is provided inside the discharge member 36. The thermal expansion refractory material 48 closes (closes) the discharge passage 37 by being heated and expanded by foaming (see FIG. 4B). Specifically, when the thermal expansion refractory material 48 reaches a predetermined temperature (hereinafter referred to as an expansion temperature T3) or higher, it expands and closes the discharge passage 37. Here, the expansion temperature T3 is set to a temperature higher than the melting temperature T2 (120 ° C.) of the holding member 46 (melting portion 46b), and is set to a temperature lower than the ignition temperature (527 ° C.) of the hydrogen fuel. Has been. In this embodiment, the expansion temperature T3 is set to 400 ° C. The expansion temperature T3 corresponds to the “second temperature”.

  The thermal expansion refractory material 48 is disposed on the outdoor side in the passage extending direction in the discharge passage 37. In this case, the thermal expansion refractory material 48 is located on the outdoor side of the closing plate 43 in the passage extending direction. The thermal expansion refractory material 48 corresponds to the second closing member.

  Next, the operation of the garage 15 will be described with reference to FIG. Here, it is assumed that hydrogen fuel is released from the vehicle 18 in the garage 15 due to the occurrence of a fire around the garage 15, and in that case, the released hydrogen fuel is discharged outdoors. The operation will be described mainly. In the following, it is assumed that the garage opening 23 is closed by the shutter curtain 26 when a fire occurs. FIG. 4 is a diagram for explaining the operation relating to the discharge member 36.

  When a fire occurs in the vicinity of the garage 15 (for example, a neighboring house adjacent to the building 10), it is conceivable that the temperature in the garage 15 significantly increases due to the heat generated by the fire. In this case, when the temperature of the fuel tank 32 of the vehicle 18 becomes equal to or higher than the discharge temperature T <b> 1 as the temperature in the garage 15 rises, the release valve 34 operates to discharge hydrogen fuel from the fuel tank 32 into the garage 15.

  Further, when the temperature in the garage 15 (specifically, the temperature around the discharge passage 37) becomes equal to or higher than the melting temperature T2 of the holding member 46, as shown in FIG. Transition to a support release state. Thereby, the support state of the closing plate 43 by the support part 46a is cancelled | released, and the closing plate 43 transfers from a closed state to an open state. For this reason, the discharge passage 37 is opened.

  Incidentally, in this embodiment, since the melting temperature T2 of the holding member 46 is set to substantially the same temperature as the discharge temperature T1 at which hydrogen fuel is released from the fuel tank 32, the timing at which hydrogen fuel is released from the fuel tank 32. The discharge passage 37 is opened at substantially the same timing.

  When the discharge passage 37 is opened, hydrogen fuel is discharged from the garage 15 to the outside through the opened discharge passage 37. Here, since the hydrogen fuel has a specific gravity smaller than that of air (that is, lighter), the hydrogen fuel rises toward the ceiling surface 41 when the hydrogen fuel is discharged from the fuel tank 32 into the garage 15. When the hydrogen fuel reaches the ceiling surface 41, the hydrogen fuel is guided to the discharge passage 37 along the inclined surface 41 a and then discharged to the outdoors through the discharge passage 37.

  Thereafter, when the temperature in the garage 15 further increases and the temperature in the garage 15 (specifically, the temperature around the discharge passage 37) reaches the expansion temperature T3 of the thermal expansion refractory material 48, as shown in FIG. In addition, the thermal expansion refractory material 48 expands and the discharge passage 37 is closed (closed) by the refractory material 48. Thereby, it is possible to suppress the spread of fire into the garage 15 through the discharge passage 37.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  A closing plate 43 is provided in a state where the discharge passage 37 is closed, and a holding member 46 for holding the closing plate 43 in a closed state is provided. The holding member 46 is provided with a melting portion 46b that melts at a melting temperature T2 or higher, and the holding state is released when the melting portion 46b is melted. In this case, when the inside of the garage 15 becomes abnormally hot due to a fire or the like and the holding member 46 (melting portion 46b) reaches the melting temperature T2, the holding of the closing plate 43 by the holding member 46 is released, and the closing plate 43 is discharged to the discharge passage. Transition to an open state in which 37 is opened. For this reason, even when the power supply cannot be used due to a power failure or the like, the hydrogen fuel released from the vehicle 18 can be discharged outdoors through the discharge passage 37.

  The melting temperature T2 of the holding member 46 (melting portion 46b), that is, the temperature at which the holding of the closing plate 43 by the holding member 46 is released is set to substantially the same temperature as the discharge temperature T1 at which hydrogen fuel is released from the fuel tank 32. . In this case, the discharge passage 37 can be opened as hydrogen fuel is released from the fuel tank 32 into the garage 15. As a result, when hydrogen fuel is released from the fuel tank 32, the hydrogen fuel can be discharged outside without being retained in the garage 15.

  The closing plate 43 is held in a closed state by the holding member 46 against the gravity acting on the closing plate 43. In this case, when the holding by the holding member 46 is released, the closing plate 43 shifts to the open state due to the action of gravity, and thus a force directed toward the open side is applied when the closing plate 43 shifts to the open state. There is no need to provide a special member. For this reason, simplification of a structure can be achieved.

  A thermal expansion refractory material 48 is provided in the discharge passage 37 to close the passage 37 when the ambient temperature becomes higher than the melting temperature T2 of the holding member 46 (expansion temperature T3). In this case, after the ambient temperature reaches the melting temperature T2 (the holding release temperature of the closing plate 43 by the holding member 46) and the closing plate 43 enters an open state in which the discharge passage 37 is opened, the ambient temperature reaches the expansion temperature T3. When raised, the discharge passage 37 is closed by the thermal expansion refractory material 48. That is, in this case, after the hydrogen fuel is discharged to the outside through the discharge passage 37, the discharge passage 37 is closed again. Therefore, the hydrogen fuel is discharged through the discharge passage 37. It is possible to suppress the spread of fire into the garage 15.

  Since the thermal expansion refractory material 48 is disposed on the outdoor side of the closing plate 43 in the discharge passage 37, when a fire occurs on the outdoor side of the garage 15 (for example, a neighboring house adjacent to the building 10), the thermal expansion refractory material is used. 48 is susceptible to heat from the fire. For this reason, when a fire occurs on the outdoor side of the garage 15, the discharge passage 37 can be more reliably closed by the thermal expansion refractory material 48, and the fire spread through the discharge passage 37 is more reliably suppressed. It becomes possible.

  In addition, since the closing plate 43 is arranged in the garage 15 with respect to the thermal expansion refractory material 48 in the discharge passage 37, the closing plate 43 and the holding member 46 are easily affected by the temperature in the garage 15. Therefore, the melting temperature T2 of the holding member 46 (that is, the temperature at which the holding of the closing plate 43 by the holding member 46 is released) is set to the discharge temperature T1 at which hydrogen fuel is released from the vehicle 18 (fuel tank 32) in the garage 15. In the above-described configuration set to approximately the temperature, a convenient configuration is obtained.

  The discharge passage 37 was provided on the ceiling side in the garage 15, and an inclined surface 41 a inclined upward toward the discharge passage 37 was formed on the ceiling surface 41 of the garage 15. In this case, when the hydrogen fuel released from the vehicle 18 rises and reaches the ceiling surface 41 (inclined surface 41a), the hydrogen fuel is guided to the discharge passage 37 along the inclined surface 41a. For this reason, hydrogen fuel having a specific gravity smaller than that of air can be smoothly discharged outdoors.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  (1) In the above embodiment, the inclined surface 41 a formed on the ceiling surface 41 of the garage 15, that is, the inclined surface 41 a inclined upward toward the discharge passage 37 is an inclined surface inclined in the depth direction of the garage 15. It is good also as an inclined surface which inclines in the width direction of the garage 15 by changing.

  5 (a) and 5 (b), an inclined surface 51a (corresponding to a first inclined surface portion) inclined in the depth direction of the garage 15 as an inclined surface inclined upward toward the discharge passage 37; You may provide the inclined surface 51b (equivalent to a 2nd inclined surface part) inclined in the width direction of the garage 15. As shown in FIG. According to this configuration, since the hydrogen fuel that has reached the ceiling surface 51 is guided to the discharge passage 37 along the inclined surfaces 51a and 51b, the hydrogen fuel can be discharged more smoothly outdoors. FIG. 5B corresponds to a cross-sectional view taken along line BB in FIG.

  Further, the ceiling surface of the garage 15 may not be provided with an inclined surface that is inclined upward toward the discharge passage 37. That is, the entire ceiling surface may be a horizontal plane extending in the horizontal direction. However, in order to smoothly discharge the hydrogen fuel to the outdoors, it is desirable to provide the inclined surface as described above.

  (2) In the above embodiment, the discharge passage 37 is provided in the wall portion of the garage 15 (specifically, the garage front wall portion 24), but instead of or in addition to this, the discharge passage is provided in the ceiling portion of the garage. May be. 6A and 6B show specific examples in that case. In the example of the figure, the second floor portion does not exist above the garage 55 in the building, and the space directly above the garage 55 is an outdoor space. In this case, the inside of the garage 55 is separated from the outside by the ceiling portion 56 of the garage 55, and a discharge member 57 is provided in the ceiling portion 56 so as to penetrate the ceiling portion 56. The discharge member 57 is disposed at a substantially central portion of the ceiling portion 56 in plan view. That is, the discharge member 57 is disposed in the center portion in the depth direction of the garage 55 in the ceiling portion 56 and in the center portion in the width direction of the garage 55.

  A discharge passage 58 is formed inside the discharge member 57 to communicate the interior of the garage 55 and the outside in the vertical direction. In this case, the hydrogen fuel discharged from the vehicle 18 is discharged to the outside through the discharge passage 58. According to such a configuration, it can be expected that hydrogen fuel having a rising property is discharged more smoothly to the outdoors.

  6A and 6B, the ceiling surface 59 of the garage 55 is provided with a plurality of (specifically, four) inclined surfaces 59a to 59d that are inclined upward toward the discharge passage 58. ing. In the garage 55, the entire ceiling surface 59 is formed by these inclined surfaces 59a to 59d. The inclined surfaces 59 a to 59 d include first inclined surfaces 59 a and 59 b that are inclined in the depth direction of the garage 55, and second inclined surfaces 59 c and 59 d that are inclined in the width direction of the garage 55. The first inclined surfaces 59a and 59b are provided on both sides of the discharge passage 58 in the depth direction of the garage 55, and the second inclined surfaces 59c and 59d are provided on both sides of the discharge passage 58 in the width direction of the garage 55. It has been.

  According to this configuration, the hydrogen fuel that has reached the ceiling surface 59 is guided to the discharge passage 58 along the inclined surfaces 59a to 59d, so that the hydrogen fuel can be discharged more smoothly outdoors.

  (3) In the above embodiment, the closing plate 43 is shifted from the closed state to the open state by the gravity acting on the closing plate 43, but this may be changed. For example, a biasing member (coil spring, spring plate, or the like) that applies a biasing force toward the open state side is provided on the closing plate 43, and the closing plate 43 is opened from the closed state using the biasing force of the biasing member. You may make it shift to. If it does so, it will become possible to transfer the closing plate 43 to an open state more reliably and more rapidly.

  (4) In the above embodiment, the holding member 46 is provided with the melting portion 46b that melts when the temperature reaches the predetermined temperature T2 or higher, and the holding state of the closing plate 43 by the holding member 46 is released by melting the melting portion 46b. Although it was set as the structure, you may change this. For example, it is considered that the holding member 46 is provided with a heat deforming portion that deforms when the temperature reaches a predetermined temperature T2 or more, and the holding state of the closing plate 43 by the holding member 46 is released when the heat deforming portion is deformed. It is done. In this case, it is conceivable that the heat-deformed portion is made of a shape memory alloy that restores to its original shape when the temperature becomes equal to or higher than a predetermined temperature T2, for example.

  (5) In the above embodiment, the thermal expansion refractory material 48 is provided as the second closing member, but the second closing member may be constituted by another member. For example, it is conceivable that the second closing member is made of a plate material in the same manner as the first closing member (closing plate 43). Specifically, a plate-like second closing member (hereinafter referred to as a second closing plate) is pivotally supported on the discharge member 36 at the upper end thereof, and the discharge passage 37 is opened by the rotation. Transition to an open state in which the discharge passage 37 is closed and a closed state in which the discharge passage 37 is closed. In this case, in the open state, the second closing plate is disposed in the lateral direction at the upper end portion of the discharge passage 37, and in the closed state, the second closing plate is in the vertical state.

  The discharge member 36 is provided with a holding member (hereinafter referred to as a second holding member) having the same configuration as the holding member 46, and the second holding member holds the second closing plate in an open state. . In this case, when the temperature of the second holding member reaches the melting temperature, the holding of the second closing plate by the second holding member is released, and the second closing plate shifts to the closed state by its own weight along with the release. Therefore, even in such a configuration, if the melting temperature of the second holding member is set to a temperature higher than the melting temperature T2 of the holding member 46, the ambient temperature of the discharge passage 37 is higher than the melting temperature T2 of the holding member 46. When it reaches, the discharge passage 37 can be closed.

  (6) In the above embodiment, the closing plate 43 is arranged on the garage 15 inner side and the thermal expansion refractory material 48 is arranged on the outdoor side in the discharge passage 37. The material 48 may be disposed inside the garage 15.

  (7) In the above embodiment, the melting temperature T2 of the holding member 46 is set to substantially the same temperature as the discharge temperature T1 at which hydrogen fuel is released from the fuel tank 32. However, the melting temperature T2 is not necessarily set to such a temperature. Absent. For example, the melting temperature T2 may be set to a temperature lower than the discharge temperature T1. In that case, the hydrogen fuel released from the fuel tank 32 can be more reliably discharged outdoors.

  (8) In the above embodiment, the present invention is applied to the garage 15 of the vehicle 18 (fuel cell vehicle) that uses hydrogen fuel as the gaseous fuel. However, the garage of the vehicle that uses other gaseous fuel such as compressed natural gas (CNG). The present invention may be applied to. In that case, when the specific gravity of the gaseous fuel used in the vehicle is smaller than air, the discharge passage 37 may be provided on the ceiling side in the garage 15 as in the above embodiment. On the other hand, when the specific gravity of the gaseous fuel is greater than that of air, the gaseous fuel descends in the garage 15, so it is necessary to provide a discharge passage on the floor side in the garage 15. When the discharge passage is provided on the floor side, it is desirable that the floor surface of the garage 15 be an inclined surface that is inclined downward toward the discharge passage. In that case, since the gaseous fuel having a large specific gravity is guided to the discharge passage along the floor surface, the gaseous fuel can be smoothly discharged to the outdoors.

  (9) In the above embodiment, the garage of the present invention is embodied as an inner garage (attached garage) provided integrally with a building, but instead, a garage (independent garage) provided independently of the building. It is also possible to embody the garage of the present invention.

  DESCRIPTION OF SYMBOLS 10 ... Building, 15 ... Garage, 37 ... Discharge passage, 41 ... Ceiling surface, 41a ... Inclined surface as an inclined surface part, 43 ... Closing plate as 1st closing member, 46 ... Holding member as holding means, 48 ... 1st 2 Thermal expansion refractory material as a closing member, 51... Ceiling surface, 51 a... Inclined surface as an inclined surface portion and first inclined surface portion, 51 b... Inclined surface as an inclined surface portion and second inclined surface portion.

Claims (5)

In a garage where a vehicle traveling with gaseous fuel is parked,
A discharge passage for discharging the gaseous fuel discharged from the vehicle at an abnormally high temperature of the garage from the garage to the outside;
A first closing member provided with the discharge passage closed;
Holding the first closing member in the closed state, and holding means for releasing the holding state by melting or deforming when the temperature exceeds a predetermined temperature,
When the holding by the holding means is released, the first closing member shifts to an open state in which the discharge passage is opened,
A second closing member for closing the discharge passage when the ambient temperature becomes a second temperature higher than the first temperature as the predetermined temperature ;
The garage characterized in that the second closing member is arranged on the outdoor side of the first closing member . The vehicle has a fuel tank for storing the gaseous fuel,
The fuel tank is provided with a release valve that releases the gaseous fuel from the tank when a predetermined release temperature is reached,
The garage according to claim 1 , wherein the predetermined temperature is set to substantially the same temperature as the discharge temperature. The holding means holds the first closing member in the closed state against gravity acting on the first closing member;
The garage according to claim 1 or 2 , wherein when the holding by the holding means is released, the first closing member shifts to the open state by the action of gravity. The discharge passage is provided on the ceiling side in the garage,
The garage according to any one of claims 1 to 3 , wherein at least a part of the ceiling surface of the garage is an inclined surface portion inclined upward toward the discharge passage. The inclined surface portion includes a first inclined surface portion that is inclined upward along the depth direction of the garage, and a second inclined surface portion that is inclined upward along the width direction of the garage. The garage according to claim 4 .

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