JP6318060B2 - Engine system - Google Patents

Description

  The present invention relates to an engine system. In particular, the present invention relates to an improved configuration that prevents rainwater from entering the package.

  Conventionally, an engine system in which an engine and a work machine (such as a generator) are mounted on a base member is known. Generally, an engine system has a configuration in which an engine and a work machine are housed in a package (for example, Patent Document 1).

  In addition, this type of engine system is provided with a configuration that prevents rainwater from entering the package for the purpose of preventing corrosion of components constituting the engine and the working machine.

  In Patent Document 1, a weir member is provided on the inner side of the package with respect to the wind pressure shutter provided in the exhaust opening of the package, and intrusion of rainwater through the lower part of the wind pressure shutter toward the inside of the package is caused by this weir member. A blocking arrangement is disclosed. In addition, a gap corresponding to the thickness of the washer applied to the shutter frame mounting portion is provided between the shutter frame of the wind pressure shutter and the vertical surface of the package, and rainwater that has entered through the wind pressure shutter is drained from this gap. It is the composition to do.

Japanese Patent No. 4755466

  However, in the configuration of Patent Document 1, since the gap is formed between the shutter frame of the wind pressure shutter and the vertical surface of the package, the drainage from the gap flows down along the vertical surface of the package. It will be.

  For this reason, when an opening such as an inspection window is provided in the lower area of the wind pressure shutter in the vertical surface of the package, the drainage flowing along the vertical surface of the package flows into the package from the opening. There is a possibility that. Further, even when the opening is configured to be closed by the cover, a waterproof packing or the like is applied between the periphery of the opening and the cover so that the drainage flowing along the vertical surface does not flow into the package. It is necessary to do so. For these reasons, the technique of Patent Document 1 is difficult to apply to a configuration in which an opening is provided on a vertical surface of a package.

  Then, an object of this invention is to show the engine system provided with the drainage structure which can provide opening in the vertical surface of a package.

The solving means of the present invention for solving the above-described problem is an engine system in which an engine and a work machine are housed in a package, and a ventilation hood having an upward opening is attached to a vertical surface of the package, A weir extending from the vicinity of the lower side of the mounting surface attached to the vertical surface of the package to a predetermined height position is provided, and the upper surface of the weir is inclined downward from the inside of the package toward the outside over the vicinity of the upper side of the mounting surface. the exhaust air guide member is provided, provided the puddle portion inside the package side of the weir, Rutotomoni provided drain tube attachment portion to the puddle portion, outside the package side of the dam at the bottom of the fume hood, the An opening extending along the extending direction of the weir in the horizontal direction is provided .

  According to the present invention, most of the rainwater entering the inside of the ventilation hood from the upward opening of the ventilation hood is prevented from entering the inside of the package by the weir and the wind guide member. Further, of the rainwater that has entered the inside of the ventilation hood, the rainwater that has flowed beyond the weir and the wind guide member is collected in the water reservoir of the ventilation hood, and is discharged from the ventilation hood through the drain pipe attaching portion. As a result, even if a part of the rainwater exceeds the weir and the wind guide member, the rainwater is discharged well and intrusion into the package is suppressed. Further, most of the rainwater discharged from the drain pipe attachment portion does not flow down along the vertical surface of the package. For example, when a drain pipe is attached to the drain pipe attachment portion, the drainage flows down inside the drain pipe, and the drainage does not flow down along the vertical surface of the package. For this reason, even if an opening such as an inspection window is provided on the vertical surface of the package, the possibility of rainwater flowing into the package from this opening is low. This effect can be obtained even when the drain pipe is not attached to the drain pipe attaching portion. As a result, it is possible to achieve both providing an opening on the vertical surface of the package and ensuring the drainage performance of the ventilation hood attached to the vertical surface.

  In the present invention, the ventilation hood attached to the vertical surface of the package is provided with a weir and a wind guide member, so that the intrusion of rain water into the inside of the package is suppressed, and the rain water that flows over the weir and the wind guide member Is discharged from the water reservoir through the drain pipe attachment. For this reason, it can suppress that drainage flows down along the vertical surface of a package, equips the vertical surface of a package with opening, and can ensure the drainage performance of the ventilation hood attached to this vertical surface.

It is a front view of the engine system concerning an embodiment. It is a top view of the engine system concerning an embodiment. It is a left view of the engine system which concerns on embodiment. It is a right view of the engine system which concerns on embodiment. It is a side view of a ventilation hood. It is the figure which looked at the ventilation hood from the arrow VI direction of FIG. It is the figure which looked at the ventilation hood from the arrow VII direction of FIG. It is the figure which looked at the ventilation hood from the arrow VIII direction of FIG. It is the perspective view which looked at the ventilation hood from the attachment surface side. It is the perspective view which looked at the ventilation hood from diagonally downward. It is sectional drawing along the XI-XI line in FIG. It is a perspective view which shows the opening periphery of the bottom panel of a ventilation hood. It is a figure equivalent to FIG. 12 in a modification.

  Hereinafter, an engine system according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, an engine system installed outdoors will be described. Further, in the present embodiment, a case where the engine system is an engine generator and the engine generator is applied to a cogeneration system will be described. This cogeneration system is a system that covers the demand power of a power consuming device (load) by power generation by an engine generator and recovers and uses (for example, uses it for hot water supply) waste heat generated by this power generation. For this reason, a waste heat recovery unit (not shown) for recovering waste heat is connected to the engine generator.

  FIG. 1 is a front view of an engine system (engine generator) 100 according to the present embodiment. FIG. 2 is a plan view of the engine system 100. FIG. 3 is a left side view of the engine system 100. FIG. 4 is a right side view of the engine system 100.

  Hereinafter, the longitudinal direction of the engine system 100 (the left-right direction in FIG. 1) is defined as the X direction. Further, the depth direction of the engine system 100 is defined as the Y direction. Further, the height direction of the engine system 100 is defined as the Z direction. In the longitudinal direction, the right side of FIG. 1 is called the X1 direction, and the left side of FIG. 1 is called the X2 direction. In the depth direction, the near side in FIG. 1 (the lower side in FIG. 2) is called the Y1 direction, and the back side in FIG. 1 (the upper side in FIG. 2) is called the Y2 direction. The upper side in the height direction is called the Z1 direction, and the lower side is called the Z2 direction.

-Overall configuration of engine system-
The engine system 100 includes a package 500 including a plurality of package panels 501 to 505, and an engine 300 and a generator (work machine) 400 (see a broken line in FIG. 1) are accommodated in the package 500. It has become. Specifically, the engine 300, the generator 400, and other devices (such as a control panel) (not shown) are placed on the common platform (base) 200, and each of the package panels 501 to 505 is placed on the common platform 200. As a result, the engine 300, the generator 400, and other devices are housed inside the package 500.

  The common bed 200 is formed by welding a plurality of channel steels and the like. The engine 300 is arranged from the approximate center position in the X direction on the common platform 200 to the X2 direction side. The generator 400 is disposed on the X1 direction side of the position where the engine 300 is disposed.

(Generator)
The generator 400 is elastically supported on the common platform 200 and connected to a crankshaft (not shown) extending from the engine 300. The generator 400 generates power by receiving the rotational force of the crankshaft as the engine 300 is operated.

(engine)
The engine 300 is a gas engine that generates power using fuel gas such as natural gas, and is elastically supported on the common platform 200. Since the configuration of the engine 300 is well known, a description thereof is omitted here.

  Various pipes 301 to 306 are connected to the engine 300. As shown in FIG. 3, these pipes 301 to 306 pass through the side surface 201 located on the X2 direction side in the common floor 200 and are connected to various pipes of a waste heat recovery unit (not shown).

  Reference numeral 301 in FIG. 3 denotes a fuel introduction pipe. Moreover, the code | symbol 302 in FIG. 3 is fuel return piping. The fuel introduction pipe 301 supplies fuel gas to the engine 300, and is connected to a fuel gas supply unit provided in the waste heat recovery unit. The fuel recirculation pipe 302 is a pipe for recirculating the fuel gas flowing through the fuel supply system when the load of the engine 300 is rapidly reduced (when the load is interrupted), and the recirculation pipe provided in the waste heat recovery unit. It is connected to the.

  Further, reference numeral 303 in FIG. 3 is a cooling water introduction pipe for engine cooling water. Further, reference numeral 304 in FIG. 3 is a cooling water outlet pipe for engine cooling water. The cooling water introduction pipe 303 is connected to a cooling water supply pipe (cooling water supply pipe for engine cooling water) provided in the waste heat recovery unit. The cooling water outlet pipe 304 is connected to a cooling water recovery pipe (cooling water recovery pipe for engine cooling water) provided in the waste heat recovery unit. The waste heat recovery unit is provided with a heat recovery heat exchanger, and the heat recovered from the engine 300 by the cooling water is used as a heat source for hot water supply.

  Further, reference numeral 305 in FIG. 3 denotes a cooling water introduction pipe for intercooler cooling water (for cooling water flowing through an intercooler that cools air compressed by a turbocharger (not shown)). Further, reference numeral 306 in FIG. 3 is a cooling water outlet pipe for intercooler cooling water. The cooling water introduction pipe 305 is connected to a cooling water supply pipe (cooling water supply pipe for intercooler cooling water) provided in the waste heat recovery unit. The cooling water outlet pipe 306 is connected to a cooling water recovery pipe (cooling water recovery pipe for intercooler cooling water) provided in the waste heat recovery unit.

  Further, reference numeral 307 in FIG. 3 is an exhaust gas pipe provided in the exhaust system of the engine 300. The exhaust gas pipe 307 passes through a position near the Y2 direction in the upper part of the left side panel (panel located on the X2 direction side) 503 of the package 500 (see FIG. 3), and is provided in the waste heat recovery unit. Connected to the exhaust gas boiler. The exhaust gas boiler recovers the heat of the exhaust gas, and the recovered heat is used as a heat source for hot water supply.

-Package structure-
The front panel (panel located on the Y1 direction side) 501 and the rear panel (panel located on the Y2 direction side) 502 of the package 500 have a plurality of doors 506 that are opened when the engine 300 and the generator 400 are maintained. , 506,... Are provided. In the present embodiment, each of the front panel 501 and the back panel 502 is provided with five doors 506, 506,... Arranged along the X direction.

  As shown in FIG. 3, the left side panel 503 of the package 500 is also provided with a plurality of doors 507 and 507 that are opened when the engine 300 is maintained. Specifically, in the left side panel 503, maintenance openings 507a and 507a are formed at two positions above and below the center position in the height direction (Z direction), and these openings 507a and 507a are formed. Each is closed by doors 507 and 507.

(Intake hood)
Intake hoods 600 and 600 are attached to the front panel 501 and the back panel 502 of the package 500, respectively. Specifically, an opening (not shown) for introducing outside air is formed in the upper part of each of the front panel 501 and the rear panel 502 of the package 500 from the approximate center position in the X direction to the X1 direction side. The intake hoods 600 and 600 are attached to the edges of these openings by means such as bolting.

  The intake hoods 600 and 600 are respectively provided with downward openings 601 and 601. Outside air is introduced into the internal space of the package 500 from the downward openings 601 and 601. A part of the introduced air is used as intake air of the engine 300 (intake air that is mixed with fuel gas and becomes an air-fuel mixture). Further, another part of the introduced air flows around the generator 400, the engine 300, and other devices, thereby contributing to the cooling of these. Since the openings 601 and 601 of the intake hoods 600 and 600 are directed downward, rainwater hardly enters the package 500 from the openings 601 and 601 even during rain. Further, the top panel 602 of the intake hood 600 is inclined downward toward the outside in the Y direction. Thereby, it is suppressed that rainwater stays on the upper surface panel 602 of the intake hood 600.

  As shown in FIG. 2, a ventilation opening 508 is formed at a position close to the end of the upper panel 505 of the package 500 on the X2 direction side. In this embodiment, the ventilation opening 508 is closed by a cover 509. This ventilation opening 508 is connected to a ventilation duct (not shown) when the engine system 100 is installed indoors, and is used to lead air that has contributed to cooling of the engine 300 and the like to the outside through the ventilation duct. . Since the engine system 100 according to the present embodiment is installed outdoors as described above, the ventilation opening 508 is not used and is closed by the cover 509. Instead, in this embodiment, a ventilation hood (exhaust hood) 700 described later is used to lead out air that has contributed to cooling of the engine 300 and the like to the outside of the package 500.

(Ventilation hood)
A ventilation hood 700 is attached to the left side panel 503 of the package 500. The ventilation hood 700 is for introducing air introduced through the openings 601 and 601 of the intake hoods 600 and 600 and contributing to cooling of the engine 300 and the like to the outside of the package 500. Specifically, as shown in FIG. 3, an opening 503 a is formed in the upper part of the left side panel 503 of the package 500 to lead out air from the approximate center position in the Y direction to the Y1 direction side. The ventilation hood 700 is attached to the edge of the opening 503a by means such as bolting.

  Hereinafter, the configuration of the ventilation hood 700 will be specifically described.

  FIG. 5 is a side view of the ventilation hood 700 (viewed from the back side of the engine system 100). 6 is a view of the ventilation hood 700 viewed from the direction of the arrow VI in FIG. FIG. 7 is a view of the ventilation hood 700 viewed from the direction of arrow VII in FIG. FIG. 8 is a view of the ventilation hood 700 viewed from the direction of arrow VIII in FIG. FIG. 9 is a perspective view of the ventilation hood 700 as viewed from the attachment surface side (surface side attached to the outer surface of the left side panel 503). FIG. 10 is a perspective view of the ventilation hood 700 viewed obliquely from below. 11 is a cross-sectional view taken along line XI-XI in FIG.

  As shown in these drawings, the ventilation hood 700 includes a hood main body 710 having an upward opening 711 and a duct portion 720 attached to the outer surface (vertical surface) of the left side panel 503 of the package 500. That is, the air that contributed to cooling the engine 300 or the like passes through the duct portion 720 of the ventilation hood 700 and then reaches the hood body portion 710 and is led out from the upward opening 711 of the hood body portion 710. (See arrow in FIG. 11). Hereinafter, the configuration of the hood main body 710 and the duct 720 will be specifically described.

  The hood main body 710 is a portion for leading upward the air that has passed through the duct portion 720 after contributing to cooling of the engine 300 and the like. The hood body 710 includes a pair of side panels 712 and 713, a front panel 714, a back panel 715, and a bottom panel 716.

  The side panels 712 and 713 are located on both sides in the Y direction and extend in the vertical direction. The side panels 712 and 713 include first side surfaces 712a and 713a that form the side surfaces of the hood main body 710, and second side surfaces 712b and 713b that form the side surfaces of the duct portion 720. . The region on the X2 direction side from the two-dot chain line A in FIG. 5 is a portion that becomes the first side surface portions 712a and 713a forming the side surface of the hood main body 710, and the region on the X1 direction side is the side surface of the duct portion 720. This is a portion to be the second side surface portions 712b and 713b to be formed.

  The front panel 714 extends in the vertical direction by connecting edges on the X2 direction side of the side panels 712 and 713 (edges on the X2 direction side of the first side surface parts 712a and 713a).

  The rear panel 715 extends in the vertical direction by connecting edges on the X1 direction side of the side panels 712 and 713 (edges on the X1 direction side of the first side surfaces 712a and 713a). Further, the rear panel 715 has a lower end edge continuous with the upper end edge of the duct portion 720. For this reason, the length dimension (height dimension) of the rear panel 715 in the vertical direction is shorter than the length dimension of the front panel 714 in the vertical direction.

  The bottom panel 716 is disposed across the lower edge of the side panels 712 and 713 and the lower edge of the front panel 714. The bottom panel 716 includes a horizontal bottom surface portion 716a extending in the horizontal direction, and an inclined bottom surface portion 716b that is continuous with the horizontal bottom surface portion 716a and is inclined. The inclined bottom surface portion 716b is located closer to the X2 direction than the horizontal bottom surface portion 716a, and is inclined downward toward the horizontal bottom surface portion 716a.

  Further, as shown in FIGS. 8 and 10, a rectangular opening 716c is formed in the horizontal bottom surface portion 716a. The opening 716 c is provided to discharge foreign matter such as rainwater and fallen leaves that have entered the ventilation hood 700 and reached the bottom of the hood main body 710. As described above, the inclined bottom surface portion 716b is inclined downward toward the horizontal bottom surface portion 716a. For this reason, foreign substances such as rainwater and fallen leaves that have entered the ventilation hood 700 are guided toward the horizontal bottom surface portion 716a, and are easily discharged from the opening 716c of the horizontal bottom surface portion 716a.

  As shown in FIGS. 10 and 11, the horizontal bottom surface portion 716 a includes a first bottom surface portion 716 d that forms the bottom surface of the hood main body portion 710 and a second surface that forms a part of the bottom surface of the duct portion 720. And a bottom surface portion 716e. That is, the region on the X2 direction side from the two-dot chain line A in FIG. 5 is a portion that becomes the first bottom surface portion 716d that forms the bottom surface of the hood main body 710, and the region on the X1 direction side is the bottom surface of the duct portion 720. This is a portion that forms part of the second bottom surface portion 716e.

  The upward opening 711 is formed by upper end edges of the side panels 712, 713, the front panel 714, and the back panel 715. Further, the entire upward opening 711 is covered with a metal mesh 717, thereby preventing a relatively large foreign matter (a foreign matter having a size that cannot be discharged from the opening 716 c) from entering the ventilation hood 700. .

  The duct portion 720 is a portion for guiding air that has contributed to cooling of the engine 300 and the like toward the hood main body portion 710. The duct portion 720 includes the second side surface portions 712b and 713b that are part of the pair of side surface panels 712 and 713, the upper surface panel 721, the second bottom surface portion 716e that is a part of the horizontal bottom surface portion 716a, and The water reservoir portion forming panel 722 is configured.

  The second side surface portions 712b and 713b form the side surface of the duct portion 720.

  The upper panel 721 is continuous with the lower end edge of the back panel 715 of the hood main body 710 and extends in the horizontal direction (X1 direction) from the lower end edge.

  As shown in FIG. 12 (a perspective view showing the periphery of the opening of the bottom panel 716), the water pool forming panel 722 is connected to the second bottom surface part 716e and extends in the horizontal direction, and the connection part 722a A vertical portion 722b extending downward from the edge on the X1 direction side, a horizontal portion 722c extending horizontally from the lower end edge of the vertical portion 722b in the X1 direction, and a flange portion 722d extending downward from an edge on the X1 direction side of the horizontal portion 722c It has.

  Further, a vertical wall plate 723 is connected to an end edge on the X1 direction side on the upper surface of the horizontal portion 722c of the water pool forming panel 722. The vertical wall plate 723 is provided over the entire Y direction of the duct portion 720.

  Accordingly, a recessed portion opened upward is formed by the vertical portion 722b and the horizontal portion 722c of the water reservoir forming panel 722 and the vertical wall plate 723, and this recessed portion is configured as a water reservoir 730. (See FIGS. 11 and 12). That is, when water such as rainwater flows into the duct portion 720, the water is collected in the water pool portion 730.

  As shown in FIGS. 8 and 10, openings 731 and 731 penetrating in the vertical direction are formed at positions near both ends in the Y direction in the horizontal portion 722 c of the water pool forming panel 722 constituting the water pool 730. In addition, tubular drain pipe attachment portions 732 and 732 extending downward from the openings 731 and 731 are provided. That is, when water such as rainwater that has flowed into the duct portion 720 is collected in the water pool portion 730, the water is drained from the duct portion 720 through the drain pipe attachment portions 732 and 732 from these openings 731 and 731. It has become. In order to improve the drainage, it is preferable that the upper surface of the horizontal portion 722c of the water pool forming panel 722 is inclined downward toward the outside in the Y direction.

  Flange portions 712c, 713c, and 721a formed by bending outward are formed on the end portion on the X1 direction side of the second side surface portions 712b and 713b and the end edge portion on the X1 direction side of the top panel 721, respectively. ing. These flange portions 712c, 713c, 721a and the flange portion 722d of the water pool portion forming panel 722 are located on the same plane, and these are the edge portions of the opening 503a formed in the left side panel 503 of the package 500. Are attached to the left side panel 503 by means such as bolting.

  On the other hand, a weir member 740 and a wind guide member 750, 750,... Are provided inside the duct portion 720. These dam members 740 and exhaust guide members 750, 750,... Are provided in the duct portion 720 over the entire Y direction.

  The dam member 740 is made of a plate material extending vertically upward from the upper surface of the second bottom surface portion 716e of the horizontal bottom surface portion 716a. As shown in FIG. 11, the height dimension of the dam member 740 is a straight line in which an imaginary line B connecting the upper end of the front panel 714 of the hood main body 710 and the upper end of the dam member 740 is inclined by 45 ° with respect to the vertical direction. In other words, the upper end of the front panel 714 and the upper end of the weir member 740 are set to be connected by a straight line inclined by 45 ° with respect to the vertical direction.

  Even if rainwater enters the inside of the ventilation hood 700 at an angle of 45 ° with respect to the vertical direction as indicated by a virtual line B in FIG. 11, this rainwater can be received by the weir member 740. It is the structure to do.

  As described above, the ventilation hood 700 has a predetermined height position from the vicinity of the lower side of the attachment surface (the flange portions 712c, 713c, 721a, and 722d) attached to the outer surface (vertical surface) of the left side panel 503 of the package 500. A dam member 740 is provided that extends to the top.

  A plurality of exhaust guide members 750, 750,... Are arranged on the upper side of the weir member 740 with a predetermined interval in the vertical direction. In the present embodiment, five exhaust guide members 750, 750,... Are arranged. These exhaust guide members 750, 750,... Are disposed so as to incline downward from the duct portion 720 toward the hood body portion 710 at a predetermined angle (for example, 45 ° with respect to the vertical direction). In other words, each of the exhaust guide members 750, 750,... Is disposed so as to be inclined downward from the inside of the package 500 toward the outside (the side from which air is derived).

  These exhaust guide members 750, 750,... Extend in the horizontal direction at end edges (end edges located on the X1 direction side) located on the duct part 720 side. This guides the flow of air flowing into the ventilation hood 700 from the inside of the package 500 so as to follow the inclination of the exhaust guide members 750, 750,..., Thereby suppressing air disturbance and exhaust performance of the ventilation hood 700. This is to ensure

  Of the plurality of exhaust guide members 750, 750,..., The lower end of the exhaust guide member 750 located at the lowermost part (the lower end located on the X2 direction side) is continuous with the upper end of the weir member 740. Further, the upper end of the wind guide member 750 located at the uppermost portion is close to the lower surface of the upper panel 721 of the duct portion 720.

  As described above, the ventilation hood 700 is inclined downward from the inside of the package 500 toward the outside from the upper side of the weir member 740 to the vicinity of the upper side of the attachment surface (the flange portions 712c, 713c, 721a, and 722d). Exhaust guide members 750, 750, ... are provided.

−Draining operation of ventilation hood−
Next, the draining operation in the ventilation hood 700 will be described.

  When it rains, rainwater enters from the upward opening 711 of the ventilation hood 700. Most of the rainwater entering the ventilation hood 700 is prevented from entering the inside of the package 500 by the weir member 740 and the exhaust guide members 750, 750,. In this case, as described above, even if rainwater enters the ventilation hood 700 at an angle of 45 ° with respect to the vertical direction (even if rainwater enters from the direction indicated by the phantom line B in FIG. 11), this rainwater Can be received by the weir member 740. Further, since each of the wind guide members 750, 750,... Is disposed so as to be inclined downward at a predetermined angle from the duct portion 720 toward the hood main body portion 710, rainwater adhering to the wind guide member 750 is disposed. Is returned to the hood main body 710 side by the inclination of the exhaust guide member 750. The rainwater returned to the hood main body 710 side by these weir members 740 and the respective exhaust guide members 750, 750,... (Rainwater prevented from entering the inside of the package 500) is the horizontal bottom surface of the hood main body 710. The liquid is discharged from the opening 716c formed in the portion 716a. Further, since the inclined bottom surface portion 716b is inclined downward toward the horizontal bottom surface portion 716a, foreign matters such as rainwater and fallen leaves that have entered the ventilation hood 700 are guided toward the horizontal bottom surface portion 716a. And is discharged well from the opening 716c of the horizontal bottom surface portion 716a.

  On the other hand, of the rainwater that has entered the inside of the ventilation hood 700, the rainwater that has flowed beyond the weir member 740 and the exhaust guide members 750, 750,... Flows into the water pool portion 730 of the duct portion 720. For example, the wind guide members 750, 750,... Fall from the edge of the X1 direction side and flow into the water reservoir 730. Since the water reservoir 730 is provided with the opening 731 and the drain pipe attachment part 732, rainwater flowing into the water reservoir 730 is discharged from the ventilation hood 700 through the drain pipe attachment part 732. Thereby, intrusion of rainwater into the package 500 is suppressed.

  As described above, since the rainwater is discharged from the ventilation hood 700 by the drain pipe mounting portion 732, most of the rainwater discharged from the drain pipe mounting portion 732 is on the vertical surface of the package 500 (the outer surface of the left side panel 503). It does not flow down. For example, as shown by phantom lines in FIG. 3, when the drain pipe 800 is attached to the drain pipe attachment portion 732, the drainage flows down inside the drain pipe 800, and the left side panel 503 of the package 500 Drainage does not flow down along the outer surface. In addition, in FIG. 3, each drain pipe 800,800 connected to each drain pipe attaching part 732,732 is connected by the Y-shaped pipe, and the drain pipe 800 is biased to the Y1 direction side. As a result, the drain pipe 800 is prevented from overlapping the area where the openings 507a and 507a and the doors 507 and 507 are disposed. Further, even when the drain pipe 800 is not attached to the drain pipe attaching portion 732, the drain pipe attaching portion 732 is separated from the outer surface of the left side panel 503 in the horizontal direction (away from the X2 direction side). Therefore, the drainage hardly flows down along the outer surface of the left side panel 503 of the package 500.

  For this reason, even if the left side panel 503 is provided with the opening 507a, the possibility of rainwater flowing into the package 500 from the opening 507a is low. Further, when the opening 507a is closed by the door 507, it is possible to eliminate the need for waterproof packing between the peripheral edge of the opening 507a and the door 507. As a result, it is possible to achieve both of providing the left side panel 503 of the package 500 with the opening 507a and ensuring the drainage performance of the ventilation hood 700 attached to the outer surface of the left side panel 503.

(Modification)
Next, a modified example will be described. In this modification, the configuration of the peripheral portion of the opening 716c formed in the bottom panel 716 of the hood main body 710 is different from that of the above embodiment. Other configurations are the same as those of the above embodiment. Here, only differences from the above embodiment will be described.

  FIG. 13 is a perspective view showing the periphery of the opening 716c of the bottom panel 716 of the ventilation hood 700 in the present modification. As shown in FIG. 13, in this modification, guide members 900 are attached around the opening 716 c of the bottom panel 716. These guide members 900 and 900 are disposed on both sides of the opening 716c in the X direction, and are vertically upward from the horizontal portions 901 and 901 screwed to the horizontal bottom surface portion 716a and the opening edge of the opening 716c. Extending vertical portions 902 and 902 are provided. The length dimension of the guide members 900, 900 in the Y direction substantially matches the length dimension of the opening 716c in the Y direction.

  By providing such guide members 900, 900, rainwater that has flowed into the bottom of the hood main body 710 is located on both sides in the longitudinal direction (Y direction) of the opening 716c, as indicated by arrows in FIG. It is guided by the guide members 900 and 900 so as to flow in, and is discharged from both side portions in the longitudinal direction (Y direction) of the opening 716c. That is, there are only two locations on the both sides in the longitudinal direction (Y direction) of the opening 716c as rainwater discharge (falling) locations from the opening 716c. For this reason, the appearance can be improved as compared with the case where rainwater is discharged (dropped) from the entire longitudinal direction of the opening 716c (when rainwater is dropped over the entire Y direction).

  The present invention is not limited to the embodiment described above, and can be implemented in various other forms. Therefore, such an embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is indicated by the scope of claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  For example, in the embodiment described above, the engine 300 is a gas engine, but an engine using gasoline as fuel or an engine using light oil as fuel may be used.

  Further, in the above-described embodiment, the engine system 100 is described in which the waste heat recovery unit is connected to configure the cogeneration system. The engine system 100 according to the present invention can be applied to devices other than those constituting a cogeneration system. For example, the present invention can be applied to a GHP (gas heat pump) having a refrigeration circuit compressor as a working machine driven by an engine. Moreover, it is also possible to apply a pump (a water pump, an oil pump, etc.) as a working machine driven by the engine.

100 Engine system 300 Engine 400 Generator (work machine)
500 Package 503 Side Panel 700 Ventilation Hood 711 Upward Opening 730 Water Reservoir 732 Drain Pipe Attachment 740 Weir Member 750 Exhaust Guide Member

Claims (1)

In an engine system in which an engine and a work machine are stored in a package,
A ventilation hood having an upward opening is attached to the vertical surface of the package,
A weir extending from the vicinity of the lower side of the mounting surface attached to the vertical surface of the package to a predetermined height position is provided in the ventilation hood, and from the inside of the package from the upper side of the weir to the vicinity of the upper side of the mounting surface. the exhaust air guide member inclined downward toward the outside is provided, the provided puddle portion inside the package side of the weir, Rutotomoni provided drain tube attachment portion to the puddle portion,
An engine system , wherein an opening extending along a horizontal extending direction of the weir is provided on the outside of the package on the bottom surface portion of the ventilation hood .

Images