Enclosure for power generation unit

Abstract

To suppress adverse effect on a power generation unit.SOLUTION: An enclosure for a power generation unit that houses a power generation unit comprising a generator and a power generation source for driving the generator, comprises: a body part having therein a power chamber capable of housing the generator and the power generation source; an intake duct part 3 in which intake air G1 supplied to the power chamber flows and an intake passage 10 including an inlet 10a that opens downward to the atmosphere and an outlet 10b that opens downward or sideways into the power chamber is formed; and a louver 20 arranged in the intake passage. The louver is located downstream of the inlet of the intake passage in an intake air flow direction.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to an enclosure for a power generation unit that houses a power generation unit including a generator and a power source for driving the generator.

Background Art

[0002] The power generation unit is mainly used outdoors or the like while being housed inside a housing called an enclosure for a power generation unit. The enclosure for a power generation unit is configured to supply intake air sucked from the outside to the power generation unit. However, if rainwater is contained in this intake air, it may have an adverse effect on the power generation unit. For this reason, various devices for removing rainwater contained in the intake air sucked from the outside are provided in the enclosure for a power generation unit. For example, Patent Document 1 discloses that the enclosure for a power generation unit is provided with a louver at the inlet of an intake duct that sucks intake air from the outside.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when a louver is provided at the inlet of the intake duct, the opening area of the inlet of the intake duct becomes small, and the flow velocity of the intake air flowing through the inlet of the intake duct becomes high. For this reason, the amount of rainwater sucked into the intake duct increases, and there is a risk of adversely affecting the power generation unit.

[0005] The present disclosure has been made in view of the above problems, and an object thereof is to provide an enclosure for a power generation unit that can suppress adverse effects on the power generation unit.

Means for Solving the Problems

[0006] To achieve the above object, an enclosure for a power generation unit according to the present disclosure is an enclosure for a power generation unit that houses a power generation unit composed of a generator and a power source for driving the generator, a main body portion having an interior power chamber capable of housing the generator and the power source; an intake duct portion in which an intake passage through which intake air supplied to the power chamber flows is formed; a louver disposed in the intake passage, and the louver is located downstream in the flow direction of the intake air from an inlet of the intake passage open to the atmosphere.

Advantages of the Invention

[0007] According to the enclosure for a power generation unit of the present disclosure, adverse effects on the power generation unit can be suppressed.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6A

Figure 6B

Figure 6C

Figure 7

Figure 8A

Figure 8B

Figure 8C

Figure 9

[0009] Hereinafter, the enclosure for a power generation unit according to an embodiment of the present disclosure will be described with reference to the drawings. Such an embodiment shows one aspect of the present disclosure, does not limit this disclosure, and can be arbitrarily changed within the scope of the technical idea of this disclosure.

[0010] <First Embodiment> (Configuration of Enclosure for Power Generation Unit) FIG. 1 is a schematic side view of an enclosure 1 for a power generation unit according to the first embodiment. As shown in FIG. 1, the enclosure 1 for a power generation unit is a housing that houses a power generation unit 7 including a generator 8 and a power generation source 9 that drives the generator 8. The power generation source 9 is, for example, an engine that drives the generator 8 by burning fuel. Note that the present disclosure is not limited to the power generation source 9 being an engine. For example, the power generation source 9 may be a turbine such as a gas turbine.

[0011] The enclosure 1 for a power generation unit has a box shape and has a main body portion 2 having a power chamber 6 capable of housing the generator 8 and the power generation source 9 therein, and an intake duct portion 3 in which an intake passage 10 through which intake air G1 supplied to the power chamber 6 flows and includes an inlet 10a that opens downward to the atmosphere and an outlet 10b that opens downward to the power chamber 6 is formed therein, and a louver 20 disposed in the intake passage 10.

[0012] In the form illustrated in FIG. 1, the enclosure 1 for the power generation unit further includes an exhaust duct portion 4 and a muffler 5. The exhaust duct portion 4 has an exhaust passage 11 formed therein through which the exhaust gas G2 discharged from the power chamber 6 flows, and is disposed on the side opposite to the intake duct portion 3 with the main body portion 2 interposed therebetween. The muffler 5 is connected to the power generation source 9 (engine) via a duct portion 17 for the muffler, and is disposed above the main body portion 2. According to such a configuration, the intake air G1 supplied to the power chamber 6 can flow through the exhaust duct portion 4 and be discharged to the atmosphere after cooling the engine, and can also flow through the muffler 5 and be discharged to the atmosphere after being burned with fuel in the engine.

[0013] Hereinafter, the direction from the exhaust duct portion 4 to the intake duct portion 3 of the enclosure 1 for the power generation unit is defined as the front direction, and the direction from the intake duct portion 3 to the exhaust duct portion 4 of the enclosure 1 for the power generation unit is defined as the rear direction. The front-rear direction of the enclosure 1 for the power generation unit is defined as the "front-rear direction X1". The vertical direction of the enclosure 1 for the power generation unit is defined as the "vertical direction X2". The width direction of the enclosure 1 for the power generation unit is defined as the "width direction X3". One side of the width direction X3 is defined as the left side, and the other side of the width direction X3 is defined as the right side.

[0014] FIG. 2 is an enlarged cross-sectional view of the intake duct portion 3 according to the first embodiment. In the form illustrated in FIG. 2, the intake duct portion 3 includes a vertical portion 12 and a horizontal portion 14.

[0015] The vertical portion 12 has a cylindrical shape, and a vertical passage 13 extending upward from the inlet 10a of the intake passage 10 is formed therein. That is, the lower end 16a of the vertical portion 12 forms the inlet 10a of the intake passage 10. The lower end 16a of the vertical portion 12 is located above the lower end of the front surface 2a on the front side of the main body portion 2 in the vertical direction X2 (see FIG. 1), and the distance between the inlet 10a of the intake passage 10 and the ground is a certain value or more (for example, 1 m or more). The upper end 16b of the vertical portion 12 is located at the same height as the upper end of the front surface 2a on the front side of the main body portion 2 in the vertical direction X2 (see FIG. 1).

[0016] In the horizontal portion 14, a horizontal passage 15 communicating with the vertical passage 13 is formed inside on the downstream side of the vertical passage 13. The horizontal portion 14 is connected to the upper surface 2b of the main body portion 2, and the horizontal passage 15 communicates with the power chamber 6 through an opening 2c formed in the upper surface 2b of the main body portion 2 (see FIG. 1). That is, the horizontal passage 15 includes the outlet 10b of the intake passage 10. The horizontal passage 15 extends along the front-rear direction X1 and brings the intake air G1 flowing through the vertical passage 13 closer to the power chamber 6.

[0017] The louver 20 is located downstream in the flow direction of the intake air G1 from the inlet 10a of the intake passage 10. In the first embodiment, the louver 20 is disposed in the vertical passage 13. The louver 20 disposed in the vertical passage 13 is located on the lower end 16a side of the vertical portion 12 in the vertical direction X2. The louver 20 is disposed in the vertical passage 13 so as to be substantially parallel to the front-rear direction X1.

[0018] Here, the installation position of the louver 20 will be specifically described. FIG. 3 is a view showing the inlet 10a of the intake passage 10 according to the first embodiment, and views the inlet 10a of the intake passage 10 from below. In the form illustrated in FIG. 3, in plan view, the inlet 10a of the intake passage 10 has a rectangular shape. That is, the inner peripheral edge 22 of the lower end 16a of the vertical portion 12 has a rectangular shape similar to the shape of the inlet 10a of the intake passage 10. Further, the outer peripheral edge 24 of the lower end 16a of the vertical portion 12 has a rectangular shape. The vertical portion 12 extends from the lower end 16a to the upper end 16b while maintaining the shape of the inner peripheral edge 22 and the shape of the outer peripheral edge 24 of the lower end 16a. That is, the vertical portion 12 has a square tube shape. According to such a configuration, the wall thickness of the vertical portion 12 is made thin, and weight reduction and cost reduction of the enclosure 1 for the power generation unit are realized.

[0019] Hereinafter, the case where the vertical portion 12 has a square tube shape will be described as an example, but the present disclosure does not limit the vertical portion 12 to a square tube shape. For example, the vertical portion 12 may have a cylindrical shape.

[0020] In the form illustrated in FIG. 3, the vertical portion 12 includes a rear wall 21, a front wall 23, a left wall 25, and a right wall 27. The rear wall 21 is located behind the front wall 23. This rear wall 21 is located on the opposite side of the front wall 23 across the vertical passage 13 in the front-rear direction X1. Each of the left wall 25 and the right wall 27 connects the rear wall 21 and the front wall 23. The left wall 25 is located to the left of the right wall 27. This left wall 25 is located on the opposite side of the right wall 27 across the vertical passage 13 in the width direction X3. The vertical passage 13 is formed by being surrounded by the rear wall 21, the front wall 23, the left wall 25, and the right wall 27.

[0021] Let the area of the inlet 10a of the intake passage 10 be A, and the diameter of a virtual circle having the area A be D. Then, as shown in FIG. 2, in the vertical passage 13, if a position D / 4 above the inlet 10a of the intake passage 10 is defined as P1, the louver 20 is located above the position P1. In another embodiment, the louver 20 is arranged in the vertical passage 13 such that the lower end of the louver 20 is located at the same height as the position P1 in the vertical direction X2.

[0022] In the first embodiment, as shown in FIG. 2, in the vertical passage 13, if a position D / 2 above the inlet 10a of the intake passage 10 is defined as P2, the louver 20 is located above the position P1 and below the position P2.

[0023] (Operation and Effect of the Enclosure for the Power Generation Unit) According to the first embodiment, the louver 20 arranged in the vertical passage 13 is located downstream of the inlet 10a of the intake passage 10 in the flow direction of the intake air G1. Therefore, the installation of the louver 20 can prevent the opening area of the inlet 10a of the intake passage 10 from becoming smaller and the flow velocity of the intake air G1 flowing through the inlet 10a of the intake passage 10 from increasing. Thus, the amount of rainwater sucked into the intake duct portion 3 through the inlet 10a of the intake passage 10 can be suppressed, and the adverse effect on the power generation unit 7 caused by the rainwater contained in the intake air G1 can be suppressed.

[0024] Even if the louver 20 is located downstream of the inlet 10a of the intake passage 10 in the flow direction of the intake air G1, if the position of the louver 20 is too close to the inlet 10a of the intake passage 10, the flow velocity of the intake air G1 flowing through the inlet 10a of the intake passage 10 will increase. For this reason, there is a possibility that the effect of suppressing the amount of rainwater sucked into the intake duct portion 3 will be reduced. According to the first embodiment, the louver 20 is located further above the position P1 which is D / 4 above the inlet 10a of the intake passage 10. For this reason, it is possible to suppress an increase in the flow velocity of the intake air G1 flowing through the inlet 10a of the intake passage 10 and suppress the amount of rainwater sucked into the intake duct portion 3.

[0025] The intake duct portion 3 removes the rainwater contained in the intake air G1 by causing the intake air G1 sucked into the intake duct portion 3 to collide with the wall surface of the intake passage 10. However, if the position of the louver 20 is too far from the inlet 10a of the intake passage 10, it becomes difficult to cause the intake air G1 sucked into the intake duct portion 3 to collide with the wall surface of the intake passage 10. In particular, it becomes difficult to cause the intake air G1 that has passed through the louver 20 to collide with the wall surface of the vertical passage 13 (the inner wall surface of the rear wall 21, the front wall 23, the left wall 25, or the right wall 27), and there is a possibility that the effect of rainwater removal will be reduced. According to the first embodiment, the louver 20 is located below the position P2 which is D / 2 above the inlet 10a of the intake passage 10. For this reason, it is possible to cause the intake air G1 that has passed through the louver 20 to collide with the wall surface of the vertical passage 13 and remove the rainwater contained in the intake air G1.

[0026] FIG. 4 is a diagram for explaining the installation position of the louver 20 according to several embodiments. As shown in FIG. 4, in several embodiments, in the vertical direction X2, if the cross-sectional area of the vertical passage 13 at the position P3 where the louver 20 is arranged is B, the distance from the louver 20 to the lower end 16a of the vertical portion 12 is L1, and the distance from the louver 20 to the upper end 16b of the vertical portion 12 is L2, then L1 < (√B) / 2 < L2 is satisfied. Incidentally, while satisfying L1 < (√B) / 2 < L2, the louver 20 may be located in a range of D / 4 or more from the inlet 10a of the intake passage 10.

[0027] According to the findings of the present inventors, it has been found that by satisfying L1 < (√B) / 2 < L2, the amount of rainwater sucked into the intake duct portion 3 can be suppressed, and the enlargement of the enclosure 1 for the power generation unit can be suppressed. Specifically, if (√B) / 2 > L2, the intake air G1 that has passed through the louver 20 may be supplied to the power chamber 6 without colliding with the wall surface of the vertical passage 13 above the louver 20. Further, as the cross-sectional area B of the vertical passage 13 at the position P3 increases, the dimension of the vertical portion 12 increases, and the dimension of the horizontal portion 14 connected to the vertical portion 12 increases. That is, the intake duct portion 3 becomes very large, and there is a risk that the enclosure 1 for the power generation unit becomes large. Further, if L1 > L2, there is a risk that the intake air G1 that has passed through the louver 20 is supplied to the power chamber 6 without colliding with the wall surface of the vertical passage 13 above the louver 20.

[0028] According to the embodiment illustrated in FIG. 4, since L1 < (√B) / 2 < L2 is satisfied, it is possible to suppress the amount of rainwater sucked into the intake duct portion 3 and suppress the enlargement of the enclosure 1 for the power generation unit.

[0029] In some embodiments, as illustrated in FIG. 4, the enclosure 1 for the power generation unit further includes a filter device 50 provided between the inlet 10a of the intake passage 10 and the louver 20. The filter device 50 includes a mesh-shaped first flat plate member 52 that is inclined with respect to the cross-sectional direction of the intake passage 10 such that one end is located upstream of the other end in the front-rear direction X1, and a mesh-shaped second flat plate member 54. One end of the second flat plate member 54 is connected to the other end of the first flat plate member 52, and the mesh-shaped second flat plate member 54 is inclined with respect to the cross-sectional direction of the intake passage 10 such that one end of the second flat plate member 54 is located downstream of the other end. In the embodiment illustrated in FIG. 4, the enclosure 1 for the power generation unit includes two filter devices 50 arranged along the front-rear direction X1. The first flat plate member 52 is located behind the second flat plate member 54. The filter device 50 is configured to have an inverted V shape by the first flat plate member 52 and the second flat plate member 54.

[0030] According to the embodiment illustrated in FIG. 4, in the filter device 50, since the first flat plate member 52 and the second flat plate member 54 are arranged to be inclined with respect to the cross-sectional direction of the intake passage 10, as compared with a conventional filter device in which a mesh-like flat plate member is arranged along the cross-sectional direction of the same intake passage 10, the cross-sectional area through which the intake air G1 passes is large. For this reason, the pressure loss with respect to the intake air G1 is reduced, and thus the intake duct portion 3 can be made more compact accordingly.

[0031] In addition, in the first embodiment, the outlet 10b of the intake passage 10 opened downward, but the present disclosure is not limited to this embodiment. As shown in FIG. 9, the outlet 10b of the intake passage 10 may open laterally. In this case, the intake duct portion 3 has, for example, a box shape. In this case, the intake passage 10 communicates with the power chamber 6 through an opening formed in the front surface 2a of the main body portion 2, for example.

[0032] <Second Embodiment> The enclosure 1 for a power generation unit according to the second embodiment of the present disclosure will be described. The second embodiment further limits the configuration of the louver 20 according to the first embodiment. In the second embodiment, components that are the same as those in the first embodiment are denoted by the same reference numerals, and detailed descriptions thereof are omitted.

[0033] (Configuration of Louver) FIG. 5 is an enlarged cross-sectional view of the intake duct portion 3 according to the second embodiment. In the second embodiment, the louver 20 includes a first region 26 that guides the flow direction of the intake air G1 that has passed through the louver 20 in the first direction Y1, and a second region 28 that guides the flow direction of the intake air G1 that has passed through the louver 20 in a second direction Y2 different from the first direction Y1.

[0034] The first region 26 of the louver 20 is located behind the second region 28 of the louver 20. That is, the first region 26 of the louver 20 is located closer to the power chamber 6 side than the second region 28 of the louver 20.

[0035] The intake air G1 that has flowed through the first region 26 of the louver 20 is guided rearward. That is, the first direction Y1 is the direction approaching the power chamber 6. The intake air G1 that has flowed through the second region 28 of the louver 20 is guided forward. That is, the second direction Y2 is the direction moving away from the power chamber 6.

[0036] In addition, in the second embodiment, the second direction Y2 was the direction opposite to the first direction Y1, but the present disclosure is not limited to this form. In some embodiments, the intake air G1 that has flowed through the second region 28 of the louver 20 is guided leftward or rightward. That is, the second direction Y2 is the direction intersecting the first direction Y1.

[0037] In the second embodiment, the louver 20 includes a first louver structure 30 that constitutes the first region 26 and a second louver structure 32 that constitutes the second region 28. Each of the first louver structure 30 and the second louver structure 32 is configured as a separate part from each other and is removable from the louver 20. In another embodiment, the louver 20 is integrally configured as a single part including the first region 26 and the second region 28.

[0038] FIG. 6A is a schematic configuration diagram showing the configuration of the first louver structure 30 according to the second embodiment. FIG. 6B is a schematic configuration diagram showing the configuration of the second louver structure 32 according to the second embodiment. FIG. 6C is a schematic configuration diagram showing the configuration of the first louver structure 30 according to an embodiment different from the second embodiment.

[0039] As shown in FIG. 6A, the first louver structure 30 includes a plurality of first vanes 34. Each of the plurality of first vanes 34 is arranged at intervals in the front-rear direction X1. Each of the plurality of first vanes 34 is inclined such that the upstream end 35a is located forward of the downstream end 35b in the flow direction of the intake air G1. In addition, the first louver structure 30 includes a first holder (not shown) that holds the plurality of first vanes 34.

[0040] If the first louver structure 30 is configured to guide the intake air G1 flowing through the first louver structure 30 in the first direction Y1, it is not limited to the form illustrated in FIG. 6A. As shown in FIG. 6C, the first louver structure 30 includes a plurality of first vanes 34, an upstream guide 37 extending forward from the upstream end 35a of the first vane 34, and a downstream guide 39 extending rearward from the downstream end 35b of the first vane 34. According to such a configuration, the first louver structure 30 can enhance the rigidity and facilitate the adjustment in the first direction Y1 as compared with the case where the first vanes 34 do not include the upstream guide 37 and the downstream guide 39. Further, the first louver structure 30 can prevent rainwater from entering the intake passage 10 by causing the rainwater to collide with the upstream guide 37 and the downstream guide 39.

[0041] As shown in FIG. 6B, the second louver structure 32 includes a plurality of second vanes 36. Each of the plurality of second vanes 36 is arranged at intervals in the front-rear direction X1. Each of the plurality of second vanes 36 is inclined such that the upstream end 37a is located rearward of the downstream end 37b in the flow direction of the intake air G1. Incidentally, the second louver structure 32 includes a second holding body (not shown) that holds the plurality of second vanes 36.

[0042] If the second louver structure 32 is configured to guide the intake air G1 flowing through the second louver structure 32 in the second direction Y2, it is not limited to the form illustrated in FIG. 6B. Although not shown, in one embodiment, the second louver structure 32 includes a plurality of second vanes 36, an upstream guide extending rearward from the upstream end 37a of the second vane 36, and a downstream guide extending forward from the downstream end 37b of the second vane 36.

[0043] As shown in FIG. 5, in the second embodiment, the intake duct portion 3 is disposed in the vertical passage 13 and further includes a plate-shaped partition plate 40 extending along the vertical direction X2. The partition plate 40 is located above the louver 20. The partition plate 40 extends from the upper end of the louver 20 to the upper end 16b of the vertical portion 12, and partitions the vertical passage 13 above the louver 20 into a first vertical passage 42 and a second vertical passage 44. The first vertical passage 42 is located behind (on the power chamber 6 side) the second vertical passage. According to such a configuration, by causing the intake air G1 that has passed through the louver 20 to collide with the partition plate 40, rainwater contained in the intake air supplied to the power chamber 6 can be further removed.

[0044] (Function and Effect) According to the second embodiment, compared with the case where the intake air G1 that has passed through the louver 20 is guided in one direction, the area of the wall surface of the intake passage 10 (particularly the vertical passage 13) that causes the intake air G1 sucked into the intake duct portion 3 to collide can be increased. Therefore, the effect of removing rainwater by causing it to collide with the wall surface of the intake passage 10 can be enhanced.

[0045] When the first region 26 of the louver 20 is located closer to the power chamber 6 than the second region 28 of the louver 20, the flow velocity of the intake air G1 that has passed through the first region 26 of the louver 20 may be faster than the flow velocity of the intake air G1 that has passed through the second region 28 of the louver 20. If the flow velocity of the intake air G1 is fast, there is a possibility that the intake air G1 is supplied to the power chamber 6 without colliding with the wall surface of the intake passage 10.

[0046] According to the second embodiment, the first region 26 of the louver 20 guides the intake air G1 in a direction approaching the power chamber 6. That is, the first region 26 of the louver 20 guides the intake air that has passed through the first region 26 of the louver 20 toward the rear wall 21 that is relatively close among the rear wall 21, the front wall 23, the left wall 25, and the right wall 27 that form the vertical passage 13. Therefore, after the intake air G1 that has passed through the first region 26 of the louver 20 collides with the inner wall surface of the rear wall 21 to remove rainwater, it can be supplied to the power chamber 6.

[0047] According to the second embodiment, the second region 28 of the louver 20 guides the intake air G1 in a direction away from the louver 20. That is, the second region 28 of the louver 20 guides the intake air G1 that has flowed through the second region 28 of the louver 20 toward the front wall 23 that is relatively close among the rear wall 21, the front wall 23, the left wall 25, and the right wall 27 that form the vertical passage 13. Therefore, the intake air G1 that has flowed through the second region 28 of the louver 20 can be collided with the inner wall surface of the front wall 23 to remove rainwater and then supplied to the power chamber 6.

[0048] <Third Embodiment> The enclosure 1 for a power generation unit according to the third embodiment of the present disclosure will be described. The third embodiment further limits the configuration of the louver 20 according to the first embodiment. In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed descriptions thereof are omitted.

[0049] (Configuration of the louver) FIG. 7 is a schematic configuration diagram showing the configuration of the louver 20 according to the third embodiment, and is a plan view of the louver 20 viewed from the vertical direction X2.

[0050] As shown in FIG. 7, in the third embodiment, the louver 20 includes a first region 26 that guides the flow direction of the intake air G1 that has flowed through the louver 20 in the first direction Y1, a second region 28 that guides the flow direction of the intake air G1 that has flowed through the louver 20 in a second direction Y2 that intersects the first direction Y1, and a third region 38 that guides the flow direction of the intake air G1 that has flowed through the louver 20 in a third direction Y3 that is opposite to the second direction Y2.

[0051] Note that each of the first region 26, the second region 28, and the third region 38 of the louver 20 may be configured as separate parts from each other and removable from the louver 20. Alternatively, the louver 20 may be integrally configured as a single part including the first region 26, the second region 28, and the third region 38.

[0052] In the third embodiment, the first direction Y1 is the rear direction, the second direction Y2 is the left direction, and the third direction Y3 is the right direction. In other words, the first direction Y1 is the direction approaching the power chamber 6. Note that each of the second direction Y2 and the third direction Y3 is not limited to a direction perpendicular to the first direction Y1.

[0053] The first region 26 of the louver 20 is located rearward of each of the second region 28 and the third region 38 of the louver 20. That is, the first region 26 of the louver 20 is located closer to the power chamber 6 side than each of the second region 28 and the third region 38 of the louver 20. The third region 38 of the louver 20 is located to the right of the second region 28 of the louver 20. That is, the third region 38 of the louver 20 is located upstream of the second region 28 of the louver 20 in the second direction Y2.

[0054] (Function and effect) According to the third embodiment, the second region 28 of the louver 20 guides the intake air G1 that has passed through the second region 28 of the louver 20 toward the left wall 25 that is relatively close among the rear wall 21, the front wall 23, the left wall 25, and the right wall 27 that form the vertical passage 13. Further, the third region 38 of the louver guides the intake air G1 that has passed through the third region 38 of the louver 20 toward the right wall 27 that is relatively close among the rear wall 21, the front wall 23, the left wall 25, and the right wall 27 that form the vertical passage 13. Therefore, the intake air G1 that has passed through each of the second region 28 and the third region 38 of the louver 20 can be collided with the wall surface (left wall or right wall) of the vertical passage 13 that is relatively close, and after removing rainwater, it can be supplied to the power chamber 6.

[0055] In the third embodiment, the first region 26 guides the intake air G1 rearward, the second region 28 guides it leftward, and the third region 38 guides it rightward, but the present disclosure is not limited to this form. FIGS. 8A to 8C are schematic configuration diagrams showing the configuration of the louver 20 according to some embodiments, and are plan views of the louver 20 viewed from the vertical direction X2.

[0056] In some embodiments, as shown in FIGS. 8A to 8C, the louver 20 includes a first region 26, a second region 28, a third region 38, and a fourth region 46. The first region 26 is located behind each of the second region 28 and the third region 38, and is located to the left of each of the third region 38 and the fourth region 46. The second region 28 is located in front of each of the first region 26 and the fourth region 46, and is located to the left of each of the third region 38 and the fourth region 46. The third region 38 is located in front of each of the first region 26 and the fourth region 46, and is located to the right of each of the first region 26 and the second region 28. The fourth region 46 is located behind each of the second region 28 and the third region 38, and is located to the right of each of the first region 26 and the second region 28. In other words, among the regions obtained by dividing the louver 20 into a grid of four, the upper left region of each of the papers of FIGS. 8A, 8B, and 8C is the first region 26, the upper right region of the paper is the second region 28, the lower right region of the paper is the third region 38, and the lower left region of the paper is the fourth region 46.

[0057] Each of the first region 26, the second region 28, the third region 38, and the fourth region 46 is configured as a separate part from each other and is removable from the louver 20. Further, each of the first region 26, the second region 28, the third region 38, and the fourth region 46 can change the direction of guiding the intake air G1, for example, by being attached to the louver 20 with the top and bottom reversed or by being rotated 90 degrees in the horizontal direction (a direction orthogonal to the vertical direction X2) and attached to the louver 20.

[0058] In the embodiment illustrated in FIG. 8A, the louver 20 is configured such that the intake air G1 flowing through the first region 26 is guided to the left, the intake air G1 flowing through the second region 28 is guided forward, the intake air G1 flowing through the third region 38 is guided forward, and the intake air G1 flowing through the fourth region 46 is guided to the right.

[0059] In the form illustrated in FIG. 8B, the louver 20 is configured such that the intake air G1 that has passed through the first region 26 is directed rearward, the intake air G1 that has passed through the second region 28 is directed leftward, the intake air G1 that has passed through the third region 38 is directed forward, and the intake air G1 that has passed through the fourth region 46 is directed rightward.

[0060] In the form illustrated in FIG. 8C, the louver 20 is configured such that the intake air G1 that has passed through the first region 26 is directed leftward, the intake air G1 that has passed through the second region 28 is directed rearward, the intake air G1 that has passed through the third region 38 is directed rearward, and the intake air G1 that has passed through the fourth region 46 is directed rightward.

[0061] According to the configuration illustrated in FIGS. 8A to 8C, a louver 20 corresponding to the flow path cross section of the intake air G1 flowing through the vertical passage 13 can be prepared. For example, when the flow path cross section has a rectangular shape with a longitudinal shape in the width direction X3, by directing the intake air G1 flowing through the louver 20 forward or rearward, the area of the wall surface (the inner wall surface of the rear wall 21 or the front wall 23) of the vertical passage 13 that the intake air G1 collides with can be increased, and the effect of removing rainwater can be enhanced.

[0062] The content described in each of the above embodiments can be understood as follows, for example.

[0063] [1] The enclosure (1) for a power generation unit according to the present disclosure is an enclosure for a power generation unit that houses a power generation unit (7) including a generator (8) and a power source (9) that drives the generator, a main body portion (2) having an interior power chamber (6) capable of housing the generator and the power source, an intake duct portion (3) through which intake air (G1) supplied to the power chamber flows, and which forms an intake passage (10) including an inlet (10a) that opens downward to the atmosphere and an outlet (10b) that opens downward or laterally to the power chamber, and a louver (20) disposed in the intake passage, wherein the louver is located downstream of the inlet of the intake passage in the flow direction of the intake air.

[0064] According to the configuration described in [1] above, the louver disposed in the intake passage is located downstream in the air flow direction from the inlet of the intake passage. For this reason, the installation of the louver reduces the opening area of the inlet of the intake passage, and it is possible to suppress an increase in the flow velocity of the intake air flowing through the inlet of the intake passage. Therefore, the amount of rainwater sucked into the intake duct portion through the inlet of the intake passage can be suppressed, and an adverse effect on the power generation unit can be suppressed.

[0065] [2] In some embodiments, in the configuration described in [1] above, When the area of the inlet of the intake passage is A and the diameter of a virtual circle having the area A is D, the louver is located in a range of D / 4 or more from the inlet of the intake passage.

[0066] If the louver is installed too close to the inlet of the intake passage, the flow velocity of the intake air flowing through the inlet of the intake passage will increase. For this reason, there is a risk that the effect of suppressing the amount of rainwater sucked into the intake duct portion will be reduced. According to the configuration described in [2] above, since the louver is located in a range of D / 4 or more downstream from the inlet of the intake passage, an increase in the flow velocity of the intake air flowing through the inlet of the intake passage can be suppressed, and the amount of rainwater sucked into the intake duct portion can be suppressed.

[0067] [3] In some embodiments, in the configuration described in [1] or [2] above, When the cross-sectional area of the intake passage at the position where the louver is disposed is B, the distance from the louver to the lower end of the intake passage is L1, and the distance from the louver to the upper end of the intake passage is L2, L1 < (√B) / 2 < L2 is satisfied.

[0068] According to the findings of the present inventors, it has been found that by satisfying L1 < (√B) / 2 < L2, the amount of rainwater sucked into the intake duct portion can be suppressed and an increase in the size of the enclosure for the power generation unit can be suppressed. According to the configuration described in [3] above, since L1 < (√B) / 2 < L2 is satisfied, an increase in the size of the enclosure for the power generation unit can be suppressed while suppressing the amount of rainwater sucked into the intake duct portion.

[0069] [4] In some embodiments, in the configuration described in any one of [1] to [3] above, When the louver is viewed in the vertical direction, the louver includes a first region (26) that guides the flow direction of the intake air that has passed through the louver in a first direction (Y1), and a second region (28) that guides the flow direction of the intake air that has passed through the louver in a second direction (Y2) different from the first direction.

[0070] According to the configuration described in [4] above, compared with the case where the intake air passing through the louver is guided in one direction, the area of the wall surface of the intake passage that collides with the intake air sucked into the intake duct portion can be increased. Therefore, the effect of removing rainwater by colliding with the wall surface of the intake passage can be enhanced.

[0071] [5] In some embodiments, in the configuration described in [4] above, The first region of the louver is located closer to the power chamber side than the second region of the louver, The first direction is a direction approaching the power chamber.

[0072] When the first region of the louver is located closer to the power chamber side than the second region of the louver, the flow velocity of the intake air passing through the first region of the louver may be faster than the flow velocity of the intake air passing through the second region of the louver. If the flow velocity of the intake air is fast, there is a possibility that the intake air is supplied to the power chamber without colliding with the wall surface of the intake passage. According to the configuration described in [5] above, the first region of the louver guides the intake air in a direction approaching the power chamber. That is, the first region of the louver guides the intake air that has passed through the first region of the louver toward the wall surface of the intake passage on the power chamber side that is relatively close among the wall surfaces of the intake passage. Therefore, the intake air that has passed through the first region of the louver can be collided with the wall surface of the intake passage to remove rainwater and then supplied to the power chamber.

[0073] [6] In some embodiments, in the configuration described in [5] above, The second region of the louver is located on the side opposite to the power chamber side with respect to the first region of the louver. The second direction is a direction intersecting the first direction or a direction opposite to the first direction.

[0074] According to the configuration described in [6] above, the second region of the louver is relatively close to the wall surface of the intake passage facing the power chamber side (opposite wall surface) or the wall surface of the intake passage intersecting the opposite wall surface (intersecting wall surface) among the wall surfaces of the intake passage. And the second region of the louver guides the intake air flowing through the second region of the louver toward the opposite wall surface or the intersecting wall surface. For this reason, the intake air flowing through the second region of the louver can be collided with the opposite wall surface or the intersecting wall surface of the intake passage to remove rainwater and then supplied to the power chamber.

[0075] [7] In some embodiments, in the configuration described in [6] above, The second direction is a direction intersecting the first direction, When the louver is viewed from the vertical direction, the louver further includes a third region (38) that guides the flow direction of the intake air flowing through the louver in a third direction (Y3) opposite to the second direction. The third region of the louver is located on the side opposite to the power chamber side with respect to the first region of the louver and is located on the upstream side in the second direction with respect to the second region of the louver.

[0076] According to the configuration described in [7] above, the second region of the louver is relatively close to one intersecting wall surface located on the downstream side in the second direction among the wall surfaces of the intake passage, and guides the intake air flowing through the second region of the louver toward one intersecting wall surface. Also, the third region of the louver is relatively close to the other intersecting wall surface located on the upstream side in the second direction among the wall surfaces of the intake passage, and guides the intake air flowing through the third region of the louver toward the other intersecting wall surface. For this reason, the intake air flowing through each of the second region and the third region of the louver can be collided with the wall surface of the intake passage (one intersecting wall surface or the other intersecting wall surface) to remove rainwater and then supplied to the power chamber.

Description of Reference Numerals

[0077] 1 Enclosure for power generation unit 2 Main body part 3 Intake duct part 6 Power chamber 7 Power generation unit 8 Generator 9 Power generation source 10 Intake passage 10a Inlet 10b Outlet 20 Louver 26 First region 28 Second region 38 Third region 46 Fourth region G1 Intake air X1 Front - rear direction X2 Vertical direction X3 Width direction Y1 First direction Y2 Second direction Y3 Third direction

Claims

1. An enclosure for a power generation unit that houses a power generation unit including a generator and a power source for driving the generator, a main body having an engine room capable of housing the generator and the power source therein, an intake duct portion in which an intake passage through which intake air supplied to the engine room flows is formed, the intake passage including an inlet that opens downward to the atmosphere and an outlet that opens downward or horizontally to the engine room, and a louver disposed in the intake passage, wherein the louver is located downstream of the inlet of the intake passage in the flow direction of the intake air and is disposed downward. An enclosure for a power generation unit.

2. An enclosure for a power generation unit that houses a power generation unit including a generator and a power source for driving the generator, a main body having an engine room capable of housing the generator and the power source therein, an intake duct portion in which an intake passage through which intake air supplied to the engine room flows is formed, the intake passage including an inlet that opens downward to the atmosphere and an outlet that opens downward or horizontally to the engine room, and a louver disposed in the intake passage, wherein the louver is located downstream of the inlet of the intake passage in the flow direction of the intake air, and when an area of the inlet of the intake passage is A and a diameter of a virtual circle having the area A is D, the louver is located in a range of D / 4 or more from the inlet of the intake passage. An enclosure for a power generation unit.

3. An enclosure for a power generation unit that houses a power generation unit including a generator and a power source for driving the generator, a main body having an engine room capable of housing the generator and the power source therein, an intake duct portion in which an intake passage through which intake air supplied to the engine room flows is formed, the intake passage including an inlet that opens downward to the atmosphere and an outlet that opens downward or horizontally to the engine room, and a louver disposed in the intake passage, wherein the louver is located downstream of the inlet of the intake passage in the flow direction of the intake air, and when a cross-sectional area of the intake passage at the position where the louver is disposed is B, a distance from the louver to the lower end of the intake passage is L1, and a distance from the louver to the upper end of the intake passage is L2, L1 < (√B) / 2 < L2 is satisfied. An enclosure for a power generation unit.

4. When the louver is viewed from the vertical direction, the louver includes a first region that guides the flow direction of the intake air flowing through the louver in a first direction, and a second region that guides the flow direction of the intake air flowing through the louver in a second direction different from the first direction. The enclosure for a power generation unit according to any one of claims 1 to 3.

5. The first region of the louver is located closer to the power chamber side than the second region of the louver. The first direction is a direction approaching the power chamber. The enclosure for a power generation unit according to claim 4.

6. The second region of the louver is located on the side opposite to the power chamber side than the first region of the louver. The second direction is a direction intersecting the first direction or a direction opposite to the first direction. The enclosure for a power generation unit according to claim 5.

7. The second direction is a direction intersecting the first direction. When the louver is viewed from the vertical direction, the louver further includes a third region that guides the flow direction of the intake air flowing through the louver in a third direction opposite to the second direction. The third region of the louver is located on the side opposite to the power chamber side than the first region of the louver and on the upstream side in the second direction than the second region of the louver. The enclosure for a power generation unit according to claim 6.

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