WO2012100376A1 - 引擎发电机 - Google Patents

引擎发电机 Download PDF

Info

Publication number
WO2012100376A1
WO2012100376A1 PCT/CN2011/000143 CN2011000143W WO2012100376A1 WO 2012100376 A1 WO2012100376 A1 WO 2012100376A1 CN 2011000143 W CN2011000143 W CN 2011000143W WO 2012100376 A1 WO2012100376 A1 WO 2012100376A1
Authority
WO
WIPO (PCT)
Prior art keywords
generator
engine
air
cover
box
Prior art date
Application number
PCT/CN2011/000143
Other languages
English (en)
French (fr)
Inventor
日比真二
李三平
Original Assignee
洋马株式会社
伊蒙妮莎（常州）发电设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 洋马株式会社, 伊蒙妮莎（常州）发电设备有限公司 filed Critical 洋马株式会社
Priority to PCT/CN2011/000143 priority Critical patent/WO2012100376A1/zh
Priority to US13/982,025 priority patent/US9429068B2/en
Priority to AU2011357560A priority patent/AU2011357560B2/en
Priority to ES11856817.9T priority patent/ES2598629T3/es
Priority to CN201180045976.5A priority patent/CN103180575B/zh
Priority to JP2013528495A priority patent/JP5612213B2/ja
Priority to EP11856817.9A priority patent/EP2669486B1/en
Publication of WO2012100376A1 publication Critical patent/WO2012100376A1/zh

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation

Definitions

  • the invention relates to an engine generator. Background technique
  • noise countermeasures are implemented in consideration of urban or nighttime use.
  • the engine and the generator cover are covered as noise countermeasures.
  • the sound generated in the cover e.g., engine sound, air intake sound of the air cleaner, etc.
  • the sound generated in the cover is blocked by the cover, and conversely, the heat is kept in the cover to easily become a high temperature.
  • a cooling fan is provided in each of the engine and the generator as a countermeasure against high temperature, and a plurality of external openings that suck the outside air into the cover are formed in the cover.
  • the cooling fan on the generator side is covered by a bracket having an exhaust vent, and the bracket is covered by a generator exhaust duct. Thereby, the air discharged from the exhaust vent of the bracket flows in the generator exhaust duct, whereby the generator can be cooled.
  • the cover is composed of a cover main body that is open on both sides and a pair of side covers that cover the opening portions on both sides of the cover main body.
  • These cover bodies and both side covers are made of plate-like parts.
  • the cover main body and the side cover are mounted so that the mutually opposing plate faces are overlapped with each other, that is, by a so-called flat plate mounting.
  • the air sucked from the external opening is fixed to the air intake box of the cooling fan on the engine side by one of the two side covers.
  • An intake chamber is formed in the vicinity of the air intake box, and the air cleaner performs intake air through the intake air chamber, whereby the intake sound that becomes noise can be reduced.
  • a muffler box that houses the muffler of the engine is fixed to the other of the two side covers.
  • an exhaust duct that guides the air in the cover to the outside is provided above the generator.
  • the exhaust duct is mounted on a stop formed in a manner across the generator.
  • the block is fixed to the buffer post in advance, and an engine and a generator are fixed to the buffer post.
  • Patent Document 1 Japanese Special Open 2010 - 222998
  • the cover main body is formed of a plate-shaped member, there is insufficient rigidity. Therefore, there is a problem that the cover main body vibrates and noise increases. Further, since a space is defined around the air intake box in the casing, there is a problem that the intake air chamber is increased in capacity to reduce the noise of the engine generator, and it is difficult to reduce the air intake noise that becomes noise.
  • the stopper for installing the exhaust duct is fixed to the buffer post, and therefore, the installation span is increased. Therefore, the integration of the exhaust duct, the generator, and the engine cannot be sufficiently achieved, and since they are not sufficiently rigid, there is a problem that the exhaust duct vibrates and the noise increases.
  • the generator exhaust duct covers only the bracket, and does not take into consideration the shape of the position of the exhaust vent of the bracket or the like. Therefore, it is difficult for the air near the exhaust vent to flow smoothly, and the entire air in the exhaust duct of the generator cannot flow smoothly, that is, the exhaust efficiency of the exhaust duct of the generator is deteriorated, and as a result, there is a possibility that the generator is easily generated. Even the engine Problems such as the temperature rise of the generator as a whole. When the temperature of the generator rises, there is a fear that the output of the generator is lowered. Summary of the invention
  • the present invention has been made in view of the above circumstances, and an object thereof is to provide an engine generator capable of reducing noise and capable of efficiently cooling.
  • the present invention provides an engine generator comprising: an engine, a generator driven by the engine, a cover covering the engine and the generator, and a muffler case accommodating the muffler of the engine, wherein the engine generator has: a first external opening formed in the cover and sucking outside air into the cover, and air taken in from the first external opening is introduced into an intake duct in the cover, the intake duct being An opening portion is formed on the upper side, and is arranged along a side surface of the muffler box at a predetermined position from the upper surface of the muffler box, between the upper side of the intake duct and the side surface of the muffler box A sound absorbing material is disposed to cover the opening portion, and an air passage is formed by a side surface of the muffler box and the sound absorbing material above the air intake duct.
  • the cover includes a cover main body that is open on both sides, and a pair of side covers that cover both side opening portions of the cover main body, and ribs are formed in the opening portions on both sides of the cover main body. And fixing the muffler case in a rib of the two ribs.
  • the engine generator includes: an engine cooling fan provided in the engine; a second external opening formed in the cover and sucking outside air into the cover, and the second external opening from the second external portion The air sucked in the opening is introduced into the air box of the engine cooling fan, and the air cleaner of the engine is connected to the air box through an air intake hose.
  • the other rib in the two of the ribs The air box is fixed on the upper.
  • the air intake box is partitioned by a partition plate, the partition plate is disposed at a connection portion of the air intake box and the air intake hose, and the second outer opening Between the ceremonies.
  • an exhaust duct for guiding the air in the cover to the outside is provided above the generator, and a mount for mounting the exhaust duct is provided on the upper surface of the generator .
  • a generator cooling fan is disposed on the generator, and the generator cooling fan is covered by a bracket having an exhaust port, and the bracket is covered by a generator exhaust duct, and the power generation is performed
  • the ventilating duct is provided with a bulging portion formed to face the ventilating opening so as to be bulged outward in the direction of the radius of rotation of the generator cooling fan.
  • the generated sound in the cover is sufficiently attenuated, so that the noise can be reduced.
  • the rigidity of the cover main body is increased by the rib portion, and the cover main body and the muffler case are further integrated to increase the rigidity thereof, whereby the vibration of the cover main body can be reduced and the noise can be reduced.
  • the air intake box is substituted for the intake air chamber, a dedicated intake air chamber may not be provided. Therefore, by increasing the capacity of the air intake box by utilizing the excess space around the air intake box, it is possible to reduce the air intake noise that becomes noise. In addition, by discarding the dedicated intake air chamber, it is possible to contribute to the reduction in weight of the entire engine generator and the cost reduction due to the reduction in the number of components.
  • the rigidity of the cover body and the air box are increased by integrating the cover body and the air box, whereby the vibration of the cover body can be reduced and the noise can be reduced.
  • the exhaust duct is mounted on a mount above the generator. Therefore, by integrating the exhaust duct, the generator, and the engine, the rigidity thereof is increased, whereby the vibration of the exhaust duct can be reduced and the noise can be reduced.
  • Fig. 1 is a perspective view showing an engine generator.
  • Fig. 2 is a front view showing the engine generator
  • Fig. 2(b) is a left side view showing the engine generator.
  • Fig. 3 is a rear view showing the engine generator
  • Fig. 3(b) is a right side view showing the engine generator.
  • Fig. 4 is a front elevational view showing the internal structure of an engine generator.
  • Fig. 5 is a left side view showing the internal structure of the engine generator
  • Fig. 5(b) is a right side view showing the internal structure of the engine generator.
  • Fig. 6 (a) is a perspective view showing the intake duct and its periphery
  • Fig. 6 (b) is a perspective view showing the intake duct.
  • Fig. 7 (a) is a side sectional view showing the intake duct and the muffler box, and (b) is a cross-sectional view taken along line A-A of Fig. 11).
  • Fig. 8 (a) is a perspective view showing the left side of the cover main body
  • Fig. 8 (b) is a perspective view showing the muffler case.
  • Fig. 9 (a) is a perspective view showing a state in which the muffler case is removed from the cover main body
  • Fig. 9 (b) is a perspective view showing the rib.
  • Fig. 10 is a perspective view showing a state in which the muffler case is attached to the cover main body (b) is a perspective view showing the internal structure of the muffler case.
  • Figure 11 is a perspective view showing the intake duct of the generator and its periphery.
  • Fig. 12 (a) is a left side view showing the muffler case attached to the cover main body.
  • (b) is a cross-sectional view at the B-B position in Figure 12 (a).
  • Fig. 13 is a perspective view showing an air intake case attached to a cover main body.
  • Fig. 14 is a right side view showing the air box attached to the cover main body.
  • Fig. 15 (a) is a perspective view showing a state in which an engine and a generator are fixed to a buffer post. (b) is a perspective view showing the mount.
  • Fig. 16 is a front elevational view showing the engine and the generator fixed to the buffer post and the exhaust duct attached to the mount.
  • Figure 17 is a perspective view showing the exhaust duct of the generator.
  • Figure 18 (a) is a side view showing the exhaust duct of the generator, and (b) is a side sectional view showing the exhaust duct of the generator.
  • Fig. 19 (a) is a front perspective view showing the front bracket of the generator
  • Fig. 19 (b) is a rear perspective view showing the front bracket of the generator.
  • an engine generator 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5.
  • the overall composition In addition, the direction indicated by the arrow F in FIG. 1 is set to "front”, the direction indicated by the arrow U is “above”, and the direction indicated by the arrow L is “left”, and each of the following will be described. The position, orientation, etc. of the part.
  • the engine generator 1 is provided with an engine 2, a generator 3 driven by the engine 2, and a cover 4 covering the engine 2 and the generator 3.
  • the cover 4 includes a cover main body 41 that is formed in a substantially inverted U shape and has left and right sides and a lower side open, and a pair of side covers 42 that cover the left and right opening portions of the cover main body 41. 43.
  • the lower casing 44 covering the lower opening of the cover body 41.
  • Mounting surfaces for mounting the side cover 42 ⁇ 43 are respectively disposed on the left and right sides of the cover body 41 411-411.
  • An operation panel 5 for operating the engine generator 1 is provided at the upper right portion in front of the cover main body 41.
  • a socket 51.51 with a waterproof cover is provided on the operation panel 5.
  • an opening and closing door 6 is provided substantially at the center of the front side of the cover main body 41.
  • the opening and closing door 6 is configured such that the left side thereof is a rotation fulcrum that rotates in the horizontal direction and is openable and closable.
  • a hook 10 for lifting the engine generator 1 is provided above the cover main body 41.
  • an external opening portion 412 ⁇ 413 that sucks the outside air into the cover 4 is formed on the front side of the cover main body 41.
  • the external opening 412 is disposed on the upper left side of the front side of the cover main body 41.
  • the external opening 413 is disposed on the lower right side of the front side of the cover main body 41.
  • external openings 414, 415 for taking the outside air into the cover 4 are also formed on the rear side of the cover main body 41.
  • the external opening portion 414 is disposed on the left upper portion of the rear side of the cover main body 41.
  • the external opening portion 415 is disposed on the lower right side portion of the rear side of the cover main body 41.
  • outer opening portion 412 on the front side of the cover main body 41 and the outer opening portion 414 on the rear side of the cover main body 41 are arranged in front-rear direction, the outer opening portion 413 on the front side of the cover main body 41, and the outer opening portion on the rear side of the cover main body 41. 415 is symmetrically arranged before and after. Further, intake ducts 7 ⁇ 7 are provided on the inner sides of the outer opening portions 412 ⁇ 414 on the front and rear sides, respectively, and the details of the intake ducts 7 ⁇ 7 will be described later.
  • a left handle 8 as a handle when the engine generator 1 is moved is provided at an upper portion of the left side cover 42.
  • an outer opening portion 421 that discharges air in the cover 4 to the outside is formed in a lower portion of the left side cover 42.
  • the outer mouth portion 421 is disposed substantially at the center of the front and rear of the left side cover 42.
  • the outer edge portion 421 of the left side cover 42 is formed with a press rib 422.422 extending in the vertical direction on the front and rear sides, respectively. Thereby, the rigidity of the left side cover 42 can be improved.
  • the press rib 422.422 is formed to be recessed toward the inner side of the cover 4.
  • a right handle 9 as a handle when the engine generator 1 is moved is provided at the upper portion of the right side cover 43. Further, an external opening portion 431 for sucking the outside air into the cover 4 is formed in the lower portion of the right side cover 43.
  • the outer opening portion 431 is disposed substantially at the center of the front and rear of the right side cover 43.
  • the outer edge portion 431 of the right side cover 43 is formed with a press rib 432.432 extending in the vertical direction on the front and rear sides, respectively. Thereby, the rigidity of the right side cover 43 can be improved. Further, the press rib 432.432 is formed to be recessed toward the inner side of the cover 4.
  • An external opening portion 441 ⁇ 442 that sucks the outside air into the cover 4 is formed on the front side of the lower casing 44.
  • the external opening portion 441 is disposed on the left side of the front side of the lower casing 44, and the external opening portion 442 is disposed near the center of the left and right sides of the front side of the lower casing 44.
  • an external opening portion 443 for sucking the outside air into the cover 4 is formed on the rear side of the lower casing 44.
  • the external opening portion 443 is disposed on the left side of the rear side of the lower casing 44.
  • the outer opening portion 441 on the front side of the lower casing 44 and the outer opening portion 443 on the rear side of the lower casing 44 are arranged in front-rear direction.
  • the caster 11.11 and the free caster 12.12 are attached to the lower four corners of the lower casing 44.
  • the fixed casters 11.11 are disposed on the left side below the lower casing 44
  • the free casters 12.12 are disposed on the right side below the lower casing 44.
  • a cylinder head 22 is attached to the upper side of the cylinder block 21.
  • a fan case 26 that houses the engine cooling fan 25 is attached to the right side of the cylinder block 21.
  • the engine cooling fan 25 is rotated by the power of a crankshaft (not shown).
  • an intake port and an exhaust port are formed in the cylinder head 22. among them,
  • the air cleaner 23 is attached to the intake port, and on the other hand, the exhaust pipe 24 is attached to the exhaust port.
  • the air cleaner 23 is coupled to the air intake box 28 via an intake hose 27.
  • Openings 281 ⁇ 282 ⁇ are formed on the front and rear sides of the air intake box 28, respectively.
  • the opening portions 281 ⁇ 282 ⁇ on the front and rear sides are formed in a substantially rectangular shape that is long in the front view.
  • the exhaust pipe 24 extends in the left-right direction, and a muffler 241.242 is provided in the middle of the exhaust pipe 24.
  • the muffler 241.242 is housed in the muffler box 13 and arranged in the top and bottom.
  • the tail pipe 243 of the exhaust pipe 24 is extended upward from the muffler 241 of the upper stage, and the exhaust port 243 of the tail pipe 243 protrudes upward from the upper surface of the cover main body 41.
  • the exhaust port 243 is disposed substantially at the center of the engine generator 1 in the front-rear direction.
  • the exhaust port 243 is far away from the operation panel 5 side (front side) of the engine generator 1, it is difficult for the user located on the operation panel 5 side (front side) of the engine generator 1 to access the slave exhaust port. 243 ⁇ exhaust gas.
  • the generators 3 are arranged side by side on the engine 2.
  • the generator 3 includes a generator main body 31 including a rotor (not shown), and a generator rear bracket 32 and a generator cooling fan 33 are disposed on the left and right sides of the generator main body 31, respectively.
  • the generator cooling fan 33 is covered by a generator exhaust duct 34.
  • the rotor of the generator main body 31 and the generator cooling fan 33 are rotated by the power of the crankshaft of the engine 2.
  • a generator intake duct 36 for introducing air to the generator cooling fan 33 side is provided on the left side of the generator rear bracket 32. Further, the air introduced through the generator intake duct 36 is taken in from the outer opening portion 441 ⁇ 442 on the front side of the lower casing 44, the outer opening portion 443 (see Fig. 3(a)) on the rear side of the lower casing 44, and the like.
  • a battery 14 is provided in front of the generator 3. Further, by opening and closing the opening and closing door 6 (see Fig. 1), maintenance of the battery 14 or the like can be easily performed. Further, an exhaust duct 15 is provided above the generator 3, and a fuel tank 16 for storing the fuel of the engine 2 is disposed above the exhaust duct 15.
  • the exhaust duct 15 is extended in the left-right direction, and the left and right sides are respectively opened.
  • the left and right end portions of the exhaust duct 1-5 are fixed to the muffler by bolts or the like (not shown)
  • the right side of the box 13 and the left side of the engine 2 (cylinder block 21, etc.).
  • the exhaust duct 15 is attached to the mount 321 provided on the upper surface of the generator rear bracket 32, and the details of the mount 321 will be described later.
  • the intake duct 7 ⁇ 7 will be described with reference to Figs. 6 and 7 .
  • the intake duct 7 on the rear side of the cover main body 41 will be described as an example.
  • the blackened arrows shown in Figs. 6 and 7 indicate the flow of air.
  • the intake duct 7 is a bottomed member in which the opening portion 71 is formed on the upper side thereof.
  • the intake duct 7 is disposed at a position defined below the muffler case 13 from the lower side of the muffler case 13. Further, a sponge 17 as a sound absorbing material is adhered to the inner surface of the cover main body 41 around the intake duct 7.
  • a part of the sponge 17 (the sponge piece 171 shown in FIG. 6) is provided between the upper portion of the intake duct 7 and the rear surface of the muffler case 13 so as to cover only the left half of the opening portion 71, that is, the right portion of the opening portion 71 is not covered. The half way is formed.
  • an air passage 18 is formed through the rear of the muffler case 13 and the sponge 17.
  • the air taken in from the external opening portion 414 flows in the intake duct 7, and flows into the air passage 18 from the opening portion 71. Further, the air in the air passage 18 rises along the muffler case 13, flows out from the upper end portion of the air passage 18 to the outside of the air passage 18, and flows around the fuel tank 16.
  • the air taken in from the outer opening portion 414 is introduced into the cover 4 through the intake duct 7.
  • the air taken in from the external opening portion 412 is also introduced into the cover 4 through the intake duct 7. Thereafter, the air flowing around the fuel tank 16 flows into the exhaust duct 15 from the front end opening portion of the exhaust duct 15, flows from the exhaust duct 15 to the muffler box 13, and is discharged from the outer opening portion 421 to the outside of the cover 4.
  • the sound passages in the cover 4 leak through the air passages 18 ⁇ 18 on the front and rear sides and the intake duct 7.7 from the outer opening portion 412.414. Further, in order to extend the attenuation distance of the generated sound in the cover 4, it is preferable to arrange the intake duct 7 as far as possible downward from the upper surface of the muffler case 13.
  • the cover main body 41, the muffler case 13, and the air intake box 28 will be described with reference to Figs. 8 to 14 .
  • the blackened arrows shown in Fig. 10 (b) and Fig. 14 indicate the air;
  • a rib 416 is formed on the left side of the cover main body 41. Further, similarly to the left side of the cover main body 41, the rib 416 is also formed on the right side of the cover main body 41. However, the rib 416 on the left side of the cover main body 41 will be described as an example.
  • the rib 416 is composed of a front rib 416A formed on the front side of the cover main body 41, and a rear rib 416B formed on the rear side of the cover main body 41.
  • the ribs 416 416 416 ⁇ on the front and rear sides are formed to be bent toward the inner side of the cover main body 41 substantially perpendicularly to the mounting surface 411 on the free end side of the mounting surface 411.
  • the muffler case 13 is a box-shaped member which is formed by combining the front plate 131, the rear plate 132, the upper plate 133, the lower plate 134, and the right side plate 135, and has a left side opening. Further, the left opening portion of the muffler case 13 is covered by the left side cover 42.
  • An insertion hole 133A through which the tail pipe 243 (exhaust port 243A) of the exhaust pipe 24 is inserted is formed in the upper plate 133.
  • An opening portion 135A connected to the left end portion of the exhaust duct 15 is formed in the right side plate 135. As shown in Fig.
  • the muffler case 13 seals the left end opening portion of the generator intake duct 36 by the back surface (right side surface) of the right side plate 135, so that the air in the generator intake duct 36 is not Will leak. That is, the duct structure is constituted by the generator intake duct 36 and the rear surface (right side surface) of the right side plate 135. Further, a sponge (not shown) as a sealing material is attached to the back surface (right side surface) of the right side plate 135. As shown in FIG.
  • the front plate 131 is fixed to the front rib 416A by a plurality of (four in the present embodiment) bolts 19.19...
  • the rear plate 132 passes through a plurality of (four in the present embodiment)
  • the bolts 19.19 are fixed to the rear rib 416B.
  • the air intake box 28 is a box-shaped member that combines a front plate 281, a rear plate 282, an upper plate 283, a lower plate 284, and a left side plate 285, and the like. Its right side is open. Further, the right opening portion of the air intake box 28 is covered by the right side cover 43. One end portion of the intake hose 27 is connected to the front side of the upper plate 283. Further, the other end portion of the intake hose 27 is connected to the air cleaner 23.
  • the above-described opening portions 281 ⁇ 282 ⁇ are formed on the front plate 281 and the rear plate 282, respectively.
  • the front opening portion 281A is disposed to face the outer opening portion 413, and the rear side opening portion 282 is disposed to face the outer opening portion 415. Further, in the front plate 281 and the rear plate 282, the front plate 281 is fixed to the front rib portion 416A by a plurality of (two in the present embodiment) bolts 19 ⁇ 19, and the rear plate 282 passes through a plurality of (the present embodiment). The way is two) The bolt 19 ⁇ 19 is fixed to the rear rib 416B.
  • an opening portion 285A facing the engine cooling fan 25 is formed on the left side plate 285.
  • the opening portion 285 is formed in a substantially circular shape when viewed from the side, and a substantially upper portion thereof is covered by a cover 286 ⁇ attached to the right side cover 43.
  • the cover 286 is formed in a horizontally long rectangular shape when viewed from the side.
  • an inner partition 286 ⁇ - 286 C is disposed on the front and rear sides, respectively, via the cover 286, and ", between the inner partition 286 ⁇ on the front side and the front plate 281, and the inner partition 286 C on the rear side.
  • An outer partition 286D-286E is provided in advance with the rear plate 282, and the inner casing 28 is partitioned by the inner partition 286 ⁇ - 286 C and the outer partition 286D - 286E.
  • the inner partition 286 B . 286 C is erected on the lower plate 284.
  • the outer partition 286D.286E is disposed to hang down from the upper plate 283. That is, the inner partition 286 ⁇ .286 C and the outer partition 286D.286E are arranged in a staggered manner in the front-rear direction.
  • the front outer partition plate 286D is disposed between the connection portion (the connection portion C shown in FIG. 14) of the air intake box 28 and the intake hose 27, and the opening portion 281A (the outer opening portion 413).
  • the front outer partition plate 286D has an inclined portion 286Da that faces the opening portion 281A obliquely, and a vertical portion 286Db that is suspended from the lower end portion of the inclined portion 286Da (the end portion opposite to the connecting portion C) and faces the opening portion 281A. Composition.
  • the inclined portion 286Da is inclined such that the separation distance from the opening portion 281A (the separation distance L1 shown in FIG. 14) is longer toward the lower side.
  • a sponge 17 ⁇ 17 ⁇ is attached to the upper end surface and the lower end surface, respectively.
  • a sponge (not shown) as a sound absorbing material is also attached to the inner surfaces of the upper plate 283, the lower plate 284, and the left side plate 285 of the air intake box 28.
  • the air taken in from the outer opening portion 413 on the front side of the cover main body 41 flows into the air intake box 28 from the opening portion 281A. Further, the air from the opening portion 281A is branched so as to be infiltrated into the lower side of the outer partition plate 286D, and then sucked into the air of the air cleaner 23 via the intake hose 27; and further, exceeds the upper side of the inner partition plate 286, The air sucked into the engine cooling fan 25 from the opening portion 285.
  • the inclined portion 286Da is inclined such that the separation distance L1 from the opening portion 281A is longer, that is, the downstream side of the air, so that the outer partition plate 286D and the inner surface of the front plate 281 can be secured.
  • the area of the passage through which the air flows is such that the air from the opening portion 281A smoothly flows.
  • the air intake sound of the air cleaner 23 leaks from the outer opening portion 413 through the opening portion 281A after diving into the lower side of the outer partition plate 286D.
  • air taken in from the outer opening portion 415 on the rear side of the cover main body 41 flows into the air intake box 28 from the opening portion 282A. Further, the air from the opening portion 282A is submerged on the lower side of the outer partition plate 286E, and the upper side of the inner partition plate 286C is sucked into the engine cooling fan 25 from the opening portion 285A. Further, air taken in from the outer opening portion 431 of the right side cover 43 also flows into the air intake box 28, and the air is sucked into the engine cooling fan 25 from the opening portion 285A. Thus, the air sucked from the external opening portion 413 ⁇ 415 is introduced into the engine cooling fan 25 through the air intake box 28.
  • the air sucked into the engine cooling fan 25 flows into the exhaust duct 15 from the right end opening portion of the exhaust duct 15, and flows from the exhaust duct 15 through the muffler case 13 to the outside of the cover 4 from the external opening portion 421.
  • the mounting seat 321 is a metal plate-shaped member, and both front and rear portions thereof are formed to be large. To the crank shape. A bolt hole (not shown) in which the bolts 321 ⁇ 321 ⁇ are inserted is formed in the front and rear end portions of the mount 321 , and the mount 321 is attached to the upper surface of the generator rear bracket 32 by bolts 321 ⁇ 321 ⁇ . Further, bolt holes 321 C - 321 C into which the bolts 321 321 are inserted are formed between the front and rear end portions of the mount 321, and the exhaust duct 15 is fixed to the mount 321 by the bolts 321 -321.
  • the engine 2 and the generator 3 are fixed to the buffer post 20.
  • the exhaust duct 15 is fixed to the generator 3 (generator rear bracket 32) via the mount 321, and is also fixed to the engine 2.
  • the integration of the exhaust duct 15, the engine 2, the generator 3, and the buffer strut 20 can be realized, and the rigidity thereof can be improved.
  • the mounting base 321 and the generator rear bracket 32 are separately provided, but the mounting base and the bracket may be integrally provided.
  • Fig. 18 (b) indicates the flow direction of the air.
  • the generator exhaust duct 34 is formed to cover the circumference of the generator cooling fan 33 and the generator front bracket 35, and air flows in the generator exhaust duct 34.
  • the generator cooling fan 33 is configured to rotate counterclockwise when viewed from the left side (when the engine 2 side is viewed from the generator 3 side in the left-right direction), and is in the generator exhaust duct 34. The direction of rotation of the air is counterclockwise.
  • the generator exhaust duct 34 has a duct main body 341 formed in a substantially U-shape, which is open to the upper side as viewed from the side.
  • a mounting portion 341A.341B attached to the lower surface of the exhaust duct 15 is provided at an end portion on the upstream side of the rotation of the duct main body 341 and an end portion on the downstream side of the rotation.
  • an opening portion 341 C is provided at an end portion on the downstream side of the rotation of the duct main body 341. Further, the opening 341 C is connected to an opening (not shown) formed on the lower surface of the exhaust duct 15.
  • an opening portion 341D'341E is formed on each of the front and rear sides of the duct main body 341, The front opening portion 341D is covered by the first protrusion cover 342, and the rear side opening portion 341E is covered by the second protrusion cover 343.
  • Each of the first and second ridges 342.343 is formed to bulge outward in the direction of the radius of rotation of the generator cooling fan 33.
  • the generator cooling fan 33 is covered by a generator front bracket 35 having first and second exhaust vents 351.352.
  • the generator front bracket 35 is formed in a substantially spiral shape in a side view, and air flows in the front bracket 35 of the generator, and is discharged from the first and second air outlets 351.352, respectively.
  • the first exhaust vent 351 is disposed on the front side of the generator front bracket 35 on the upper side of the rotation center of the generator cooling fan 33 (the rotation center O shown in FIG. 18), and on the other hand, the second row The tuyere 352 is disposed on the lower side of the generator front bracket 35 on the lower side than the rotation center O. Further, in the generator front bracket 35, air flows in from an opening (not shown) formed on the front side of the generator front bracket 35.
  • the first ridge cover 342 is formed to be bent at a middle portion thereof (the bent portion 342A shown in Fig. 18), and is disposed to face the first vent 351. Further, the bent portion 342A in the middle portion of the first ridge 342 is a portion located at the foremost side in the first ridge 342, and the distance from the front surface of the duct main body 341 to the bent portion 342A is L2.
  • the first ridge cover 342 is composed of an upstream side inclined portion 342 B disposed on the upstream side via the bent portion 342A, and a downstream side inclined portion 342 C disposed on the downstream side.
  • the upstream side inclined portion 342B extends obliquely from the front upper portion of the duct main body 341 toward the bent portion 342A.
  • the downstream side inclined portion 342C extends obliquely from the front lower portion of the duct main body 341 toward the bent portion 342A. Settings.
  • the second ridge 343 is formed to be bent at a middle portion thereof (the bent portion 343A shown in FIG. 18), and is provided to face the second vent 352. Further, the bent portion 343A in the middle portion of the second protrusion cover 343 is the last portion in the second protrusion cover 343, and the distance from the rear surface of the duct main body 341 to the bent portion 343A is L3 0 . In the mode, the distance L3 is longer than the distance L2. That is, the second dragon The hood 343 is protruded more outward than the first ridge 342 toward the outer side in the radial direction of the generator cooling fan 33.
  • the second protrusion cover 343 is composed of an upstream side inclined portion 343 B that is disposed on the upstream side via the bent portion 343A, and a downstream side inclined portion 343 C that is disposed on the downstream side.
  • the upstream side inclined portion 343B extends obliquely from the lower rear portion of the duct main body 341 toward the bent portion 343A, and on the other hand, the downstream side inclined portion 343C extends obliquely from the rear surface of the duct main body 341 toward the bent portion 343A.
  • the air discharged from the first exhaust vent 351 of the generator front bracket 35 smoothly flows along the upstream inclined portion 342B of the first ridge 342, while The discharged air changes direction in the bent portion 342A, and smoothly flows along the downstream side inclined portion 342C. Further, the air discharged from the second exhaust vent 352 of the generator front bracket 35 smoothly flows along the upstream side inclined portion 343 B of the second bulging cover 343, and at the same time, the discharged air changes direction at the bent portion 343A. , smoothly flows along the downstream side inclined portion 343 C. Thus, the air discharged from the first and second exhaust ports 351.352 merges and is discharged from the opening portion 341 C of the generator exhaust duct 34.
  • the air discharged from the opening portion 341 C flows into the exhaust duct 15 from the opening portion on the lower surface of the exhaust duct 15, and flows from the exhaust duct 15 through the muffler case 13 to the outside of the cover 4 from the external opening portion 421.
  • both the first and second ridges 342.343 are provided in accordance with the number of the first and second vents 351.352 of the generator front bracket 35 (cradle). However, it is also possible to provide one or three or more bulging portions for the number of vents of the bracket. Further, in the present embodiment, the first and second ridges 342.343 are separately provided from the duct body 341, but the bulging portion may be integrally provided with the duct body.
  • an engine generator 1 comprising: an engine 2, a generator 3 driven by the engine 2, a cover 4 covering the engine 2 and the generator 3, and a muffler case 13 accommodating the muffler 241.442 of the engine 2, wherein
  • the engine generator 1 includes: an outer opening formed in the cover 4 (the cover main body 41) and sucking the outside air into the cover 4
  • the portion 412 ⁇ 414 and the air sucked from the outer opening portion 412 ⁇ 414 are introduced into the intake duct 7 ⁇ 7 in the cover 4, and the intake duct 7 has an opening 71 formed on the upper side thereof, along the side surface of the muffler case 13.
  • the sponge 17 is partially covered by the opening portion 71, and is in the intake duct 7
  • the air passage 18 is formed by the side of the muffler case 13 and the sponge 17.
  • the attenuation distance is extended by the air passage 18, and the generated sound in the cover 4 is sufficiently attenuated, so that noise can be reduced.
  • the cover 4 includes a cover main body 41 that is open to the left and right sides, and a pair of side covers 42 ⁇ 43 that cover the left and right opening portions of the cover main body 41, and ribs 416.416 are formed in the left and right opening portions of the cover main body 41, respectively.
  • a muffler case 13 is fixed to the left rib 416 of the two ribs 416 ⁇ 416.
  • the rigidity of the cover main body 41 is increased by the ribs 416 and 416, and the cover main body 41 and the muffler case 13 are further integrated to increase the rigidity thereof, whereby the vibration of the cover main body 41 can be reduced and lowered. noise.
  • the engine cooling fan 25 provided in the engine 2 and the external opening 413 ⁇ 415 formed in the cover 4 (the cover main body 41) and sucking the outside air into the cover 4 are sucked from the external opening 413.415.
  • the air is introduced into the air intake box 28 of the engine cooling fan 25, and the air cleaner 23 of the engine 2 is coupled to the air box 28 via the intake hose 27.
  • the intake box 28 since the intake box 28 is substituted for the intake chamber, it is not necessary to provide a dedicated intake chamber. Therefore, by increasing the capacity of the air intake box 28 by using the excess space around the air intake box 28, it is possible to reduce the air intake noise that becomes noise. In addition, by discarding the dedicated intake air chamber, it is also possible to contribute to cost reduction by the overall weight reduction of the engine generator 1 and the reduction in the number of parts.
  • the air box is fixed to the left rib 416 of the two ribs 416.416.
  • the air intake box 28 is partitioned by an outer partition 286D, and the outer partition 286D is disposed between the connection portion C of the air intake box 28 and the intake hose 27, and the outer opening portion 413.
  • the attenuation distance is extended by the outer partition plate 286D, and the intake sound is sufficiently attenuated, so that the noise can be reduced.
  • an exhaust duct 15 for guiding the air in the cover 4 to the outside is provided above the generator 3, and a mount 321 for mounting the exhaust duct 15 is provided above the generator 3 (generator rear bracket 32).
  • the exhaust duct 15 is mounted on the mount 321 above the generator 3 (generator rear bracket 32). Therefore, by integrating the exhaust duct 15, the generator 3, and the engine 2 and increasing their rigidity, the vibration of the exhaust duct 15 can be reduced and noise can be reduced.
  • a generator cooling fan 33 is provided on the generator 3, and the generator cooling fan 33 is covered by a generator front bracket 35 having first and second exhaust vents 351.352, and the generator front bracket 35 is exhausted by the generator.
  • the duct 34 is covered, and the generator exhaust duct 34 is provided in such a manner as to face the first and second exhaust vents 351.352 so as to be outwardly bulged toward the outer side of the rotational radius of the generator cooling fan 33.
  • the hood is 342.343.
  • the air in the vicinity of the first and second exhaust vents 351.352 flows smoothly through the first and second bulging covers 342.343, so that the flow of the entire air in the generator exhaust duct 34 is smooth, and Efficient cooling of the generator 3 and even the engine generator 1 as a whole.
  • the invention is applicable to engine generators.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)

Description

引擎发电机 技术领域
本发明涉及一种引擎发电机。 背景技术
目前， 对于引擎发电机， 考虑到城区或夜间的使用， 实施噪 音对策。 例如， 在专利文献 1的引擎发电机中， 作为噪音对策， 将引擎及发电机用罩覆盖。由此，由于由罩遮断罩内的发生音（例 如引擎音、 空气滤清器的进气音等）， 所以能够降低噪音。
但是， 专利文献 1的引擎发电机由罩将罩内的发生音遮断， 相反， 热保持在罩内容易成为高温。 于是， 在专利文献 1的引擎 发电机中， 作为高温对策在引擎及发电机上分别设置冷却风扇， 同时， 在罩上形成将外部的空气吸入罩内的多个外部开口部。 由 此， 由于外部的空气从外部开口部通过两冷却风扇的吸引力被吸 入罩内， 所以能够对引擎、 发电机等进行冷却。 另外， 发电机侧 的冷却风扇由具有排风口的托架覆盖， 另外， 托架由发电机排风 管道覆盖。 由此， 从托架的排风口排出的空气在发电机排风管道 内流动， 由此能够对发电机进行冷却。
但是， 在专利文献 1的引擎发电机中， 外部的空气从外部开 口部被吸入罩内， 相反， 罩内的发生音从外部开口部泄漏， 因此， 噪音容易增大。 于是， 在专利文献 1的引擎发电机中， 设置将从 外部开口部吸入了的空气导入罩内的进气管道。 由此， 利用进气 管道使得衰减距离变长， 将罩内的发生音衰减， 因此， 能够降低 噪音。
顺便提及， 罩由两侧开口的罩主体和覆盖罩主体的两侧开口 部的一对侧盖构成。 这些罩主体及两侧盖均由板状的部件构成， 罩主体和两侧盖将相互的板面彼此重合地安装， 即通过所谓的平 板安装而进行安装。
在两侧盖中一个上固定将从外部开口部吸入了的空气导入引 擎侧的冷却风扇的进气箱。 在进气箱的附近形成有进气腔室， 空 气滤清器经由进气腔进行进气，由此能够降低成为噪音的进气音。 另外， 在两侧盖中另一个上固定收纳引擎的消声器的消声器箱。
另外， 在发电机的上方设置将罩内的空气导出到外部的排风 管道。 排风管道被安装于以跨过发电机的方式形成的挡块上。 挡 块被预先固定于緩冲支柱上， 在緩冲支柱上还固定有引擎及发电 机。
专利文献 1: 日本特开 2010 - 222998号公艮
但是， 在专利文献 1的引擎发电机中， 当为实现引擎发电机 的紧凑化而减小进气管道的大小时， 形成于进气管道内的空气通 路的长度、 即衰减距离缩短。 于是， 不能充分衰减罩内的发生音， 因此， 存在噪音增大的问题。
另外， 罩主体由板状的部件构成， 所以没有足够的刚性。 因 此， 存在有罩主体振动而噪音增大之类的问题。 另外， 在壳体内 进气箱的周围限定空间， 因此， 存在为实现引擎发电机的低噪音 化而将进气腔大容量化，难以降低成为噪音的进气音之类的问题。
另外， 安装排风管道的挡块被固定于緩沖支柱上， 因此， 安 装跨度增大。 因此， 不能充分实现排风管道、 发电机及引擎的一 体化， 且由于它们没有足够的刚性， 所以存在排风管道振动而噪 音增大之类的问题。
另外， 发电机排风管道仅覆盖托架， 并非考虑到托架的排风 口的位置等的形状。 因此， 排风口附近的空气难以顺畅地流动， 发电机排风管道内整体的空气不能顺畅地流动， 即， 发电机排风 管道的排风效率变差， 其结果是， 存在容易导致发电机乃至引擎 发电机整体的温度上升之类的问题。 当发电机的温度上升时， 存 在发电机的输出降低的担心。 发明内容
本发明是鉴于以上的情况而创立的， 其目的在于， 提供一种 能够降低噪音且能够高效地进行冷却的引擎发电机。
本发明要解决的课题如上，下面说明用于解决该课题的手段。 本发明提供一种引擎发电机， 其具备： 引擎、 由该引擎驱动 的发电机、 覆盖所述引擎及发电机的罩、 收纳所述引擎的消声器 的消声器箱， 其中， 该引擎发电机具备： 形成于所述罩且将外部 的空气吸入所述罩内的第一外部开口部、 将从该第一外部开口部 吸入了的空气导入所述罩内的进气管道， 该进气管道在其上侧形 成开口部， 沿所述消声器箱的侧面被配置于从所述消声器箱的上 面起的下方规定位置， 在所述进气管道的上侧和所述消声器箱的 侧面之间， 以部分覆盖所述开口部的方式设置吸音材料， 在所述 进气管道的上方， 由所述消声器箱的侧面和所述吸音材料形成空 气通路。
而且， 本发明的引擎发电机中， 所述罩具备两侧开口的罩主 体和覆盖该罩主体的两侧开口部的一对侧盖， 在所述罩主体的两 侧开口部分别形成肋部， 在两所述肋部中的一肋部固定所述消声 器箱。
另外， 本发明的引擎发电机中， 具备： 设于所述引擎的引擎 冷却风扇、 形成于所述罩且将外部的空气吸入所述罩内的第二外 部开口部、 将从该第二外部开口部吸入了的空气导入所述引擎冷 却风扇的进气箱， 在该进气箱上通过进气软管连结所述引擎的空 气滤清器。
另外， 本发明的引擎发电机中， 在两所述肋部中的另一肋部 上固定所述进气箱。
而且， 本发明的引擎发电机中， 所述进气箱内由隔板隔开， 该隔板配置于所述进气箱与所述进气软管的连接部、 和所述第二 外部开口部之间。
另外， 本发明的引擎发电机中， 在所述发电机的上方设置将 所述罩内的空气导出到外部的排风管道， 在所述发电机的上面设 置安装所述排风管道的安装座。
另外， 本发明的引擎发电机中， 在所述发电机上设置发电机 冷却风扇， 该发电机冷却风扇由具有排风口的托架覆盖， 该托架 由发电机排风管道覆盖， 在该发电机排风管道上， 以面向所述排 风口的方式设置以朝向所述发电机冷却风扇的旋转半径方向外侧 隆出的方式形成的隆出部。
作为本发明的效果， 实现如下所示的效果。
本发明的引擎发电机中， 由于通过空气通路而使得衰减距离 变长， 充分衰减罩内的发生音， 因此， 能够降低噪音。
而且，本发明的引擎发电机中，通过肋部提高罩主体的刚性， 同时， 进一步实现罩主体及消声器箱的一体化，提高它们的刚性， 由此， 能够降低罩主体的振动， 降低噪声。
另外， 本发明的引擎发电机中， 由于进气箱代替进气腔， 因 此， 可以不设置专用的进气腔即可。 因此， 通过利用进气箱周围 的多余的空间实现进气箱的大容量化， 由此能够降低成为噪音的 进气音。 另外， 通过废弃专用的进气腔， 也能够有助于引擎发电 机整体的轻量化及由零件数量的消减带来的成本降低。
另外， 本发明的引擎发电机中， 通过实现罩主体及进气箱的 一体化而提高它们的刚性， 由此， 能够降低罩主体的振动， 降低 噪音。
而且，本发明的引擎发电机中， 由于通过隔板延长衰减距离， 充分衰减进气音， 因此， 能够降低噪音。
另外， 本发明的引擎发电机中， 排风管道被安装于发电机上 面的安装座上。 因此， 通过实现排风管道、 发电机及引擎的一体 化而提高它们的刚性， 由此能够降低排风管道的振动， 降低噪音。
进一步地， 本发明的引擎发电机中， 由于通过隆出部使排风 口附近的空气容易顺畅地流动， 因此， 发电机排风管道内整体的 空气的流动变得顺畅， 能够高效地冷却发电机乃至引擎发电机整 体。 附图说明
图 1是表示引擎发电机的立体图。
图 2 )是表示引擎发电机的正面图， （b)是表示引擎发电 机的左侧面图。
图 3 )是表示引擎发电机的背面图， （b)是表示引擎发电 机的右侧面图。
图 4是表示引擎发电机的内部构造的正面图。
图 5 )是表示引擎发电机的内部构造的左侧面图， （b)是 表示引擎发电机的内部构造的右侧面图。
图 6 (a)是表示进气管道及其周边的立体图， （b)是表示进 气管道的立体图。
图 7 (a)是表示进气管道及消声器箱的侧面剖面图， （b)是 在图 11 ) 的 A- A位置的剖面图。
图 8 (a)是表示罩主体的左侧的立体图， （b)是表示消声器 箱的立体图。
图 9(a)是表示将消声器箱从罩主体拆下后的状态的立体图， (b)是表示肋部的立体图。
图 10 )是表示将消声器箱安装于罩主体上的状态的立体 图， （b)是表示消声器箱的内部构造的立体图。
图 11是表示发电机进气管道及其周边的立体图。
图 12( a )是表示安装于罩主体上的消声器箱的左侧面图。（ b ) 是在图 12 (a) 的 B - B位置的剖面图。
图 13是表示安装于罩主体上的进气箱的立体图。
图 14是表示安装于罩主体上的进气箱的右侧面图。
图 15 (a)是表示将引擎及发电机固定于緩冲支柱上的状态 的立体图。 （b)是表示安装座的立体图。
图 16是表示固定于緩冲支柱上的引擎及发电机、以及安装于 安装座上的排风管道的正面图。
图 17是表示发电机排风管道的立体图。
图 18 ( a)是表示发电机排风管道的侧面图， （b)是表示发 电机排风管道的侧面剖面图。
图 19 (a)是表示发电机前托架的前方立体图， （b)是表示 发电机前托架的后方立体图。
符号说明
1 引擎发电机
2 引擎
3 发电机
4 罩
7 进气管道
13 消声器箱
15 排风管道
17 海绵 （吸音材料）
18 空气通路
23 空气滤清器
25 引擎冷却风扇 27 进气软管
28 进气箱
32 发电机后托架 （托架）
33 发电机冷却风扇
34 发电机排风管道
41 罩主体
42 左侧盖
43 右侧盖
71 开口部
241 消声器
242 消声器
286D 夕卜隔板（隔板）
321 安装座
342 第一隆出罩 （隆出部）
343 第二隆出罩 （隆出部）
351 第一排风口 （排风口）
352 第二排风口 （排风口）
412 外部开口部 (第一外部开口部）
413 外部开口部 (第二外部开口部）
414 外部开口部 (第一外部开口部）
415 外部开口部 (第二外部开口部）
416 肋部
C 连接部 具体实施方式
下面， 基于附图对用于实施本发明的方式进行说明。
首先，参照图 1 ~图 5说明本发明一实施方式的引擎发电机 1 的整体构成。 另外， 将图 1中箭头 F所示的方向设为"前方"、 将 箭头 U所示的方向设为"上方"、 将箭头 L所示的方向设 "左方"， 说明以下所述的各部件的位置、 方向等。
引擎发电机 1具备引擎 2、 由引擎 2驱动的发电机 3、覆盖引 擎 2及发电机 3的罩 4。
如图 1 ~图 3所示， 罩 4具备： 侧面看形成大致反 U字状且 左右两侧及下侧开口的罩主体 41、 覆盖罩主体 41 的左右两侧开 口部的一对侧盖 42·43、 覆盖罩主体 41的下侧开口部的下部壳体 44。 在罩主体 41 的左右两侧分别设置安装侧盖 42·43 的安装面 411-411.
在罩主体 41前面的右侧上部设置用于操作引擎发电机 1的操 作面板 5。 在操作面板 5设置带防水罩的插座 51·51等。 另外， 在 罩主体 41的前侧大致中央设置开闭门 6。 开闭门 6以其左侧为转 动支点沿水平方向转动且可开闭地构成。 另外， 在罩主体 41的上 面设置用于吊起引擎发电机 1的吊钩 10。
另外，在罩主体 41的前侧形成将外部的空气吸入罩 4内的外 部开口部 412·413。 其中， 外部开口部 412配置于罩主体 41前侧 的左侧上部， 另一方面， 外部开口部 413配置于罩主体 41前侧的 右侧下部。 另外， 与罩主体 41的前侧相同， 在罩主体 41的后侧 也形成将外部的空气吸入罩 4内的外部开口部 414，415。其中，外 部开口部 414配置于罩主体 41后侧的左侧上部， 另一方面， 外部 开口部 415配置于罩主体 41后侧的右侧下部。 另外， 罩主体 41 前侧的外部开口部 412、 和罩主体 41后侧的外部开口部 414前后 对称地配置， 罩主体 41前侧的外部开口部 413、 和罩主体 41后 侧的外部开口部 415前后对称地配置。 另外， 在前后两侧的外部 开口部 412·414的内侧分别设置进气管道 7·7， 对于进气管道 7·7 的详情后面描述。 在左侧盖 42的上部设置移动引擎发电机 1时的作为提手的左 把手 8。 另外， 在左侧盖 42的下部形成将罩 4内的空气向外部排 出的外部开口部 421。 外部 口部 421配置于左侧盖 42的前后大 致中央。 另外， 隔着左侧盖 42的外部开口部 421在前后两侧分别 形成沿竖直方向延伸的压棱 422.422。 由此， 可以提高左侧盖 42 的刚性。 另外， 压棱 422.422以向罩 4内侧凹下的方式形成。
在右侧盖 43的上部设置移动引擎发电机 1时的作为提手的右 把手 9。 另外， 在右侧盖 43的下部形成将外部的空气吸入罩 4内 的外部开口部 431。 外部开口部 431配置于右侧盖 43的前后大致 中央。 另外， 隔着右侧盖 43的外部开口部 431在前后两侧分别形 成沿竖直方向延伸的压棱 432.432。 由此， 可提高右侧盖 43的刚 性。 另外， 压棱 432.432以向罩 4内侧凹下的方式形成。
在下部壳体 44的前侧形成将外部的空气吸入罩 4内的外部开 口部 441·442。 其中， 外部开口部 441配置于下部壳体 44前侧的 左侧， 另一方面， 外部开口部 442配置于下部壳体 44前侧的左右 中央附近。 另夕卜，在下部壳体 44的后侧形成将外部的空气吸入罩 4内的外部开口部 443。 外部开口部 443配置于下部壳体 44后侧 的左侧。 另外， 下部壳体 44前侧的外部开口部 441、 和下部壳体 44后侧的外部开口部 443前后对称地配置。 另外，在下部壳体 44 的下面四角安装固定小脚轮 11.11及自由小脚轮 12.12。 其中， 固 定小脚轮 11.11配置于下部壳体 44下面的左侧， 另一方面， 自由 小脚轮 12.12配置于下部壳体 44下面的右侧。 由此， 可以使引擎 发电机 1容易地移动， 同时， 可以使此时的方向转换容易。
如图 4及图 5所示，在引擎 2中，在气缸体 21的上侧安装气 缸盖 22。 另外， 在气缸体 21的右侧安装收纳引擎冷却风扇 25的 风扇壳体 26。 引擎冷却风扇 25通过未图示的曲轴的动力进行旋 转。 另外， 在气缸盖 22上形成未图示的进气口及排气口。 其中， 在进气口安装空气滤清器 23，另一方面，在排气口安装排气管 24。 空气滤清器 23通过进气软管 27与进气箱 28连结。在进气箱 28 的前后两侧分别形成开口部 281Α·282Α。 前后两侧的开口部 281Α·282Α在正面看均形成为纵长的大致长方形状。
排气管 24向左右方向延伸设置， 且在排气管 24的中途设置 消声器 241.242。 消声器 241.242收纳于消声器箱 13内， 在上下 排列配置。 其中， 从上段的消声器 241向上方向延伸设置排气管 24的尾管 243， 尾管 243的排气口 243Α从罩主体 41的上面向上 方突出。 排气口 243Α在前后方向配置于引擎发电机 1的大致中 央。 由此， 由于排气口 243Α距引擎发电机 1的操作面板 5侧（前 侧）远， 所以在位于引擎发电机 1的操作面板 5侧 （前侧） 的使 用者难以接触到从排气口 243Α排出的废气。
发电机 3在引擎 2的左方排列配置。 发电机 3具备由未图示 的转子等构成的发电机主体 31， 隔着发电机主体 31在左右两侧 分别设置发电机后托架 32及发电机冷却风扇 33。 发电机冷却风 扇 33由发电机排风管道 34覆盖。发电机主体 31的转子及发电机 冷却风扇 33通过引擎 2的曲轴的动力进行旋转。 另外，在发电机 后托架 32的左侧设置将空气导入发电机冷却风扇 33侧的发电机 进气管道 36。 另外， 通过发电机进气管道 36导入的空气从下部 壳体 44前侧的外部开口部 441·442、下部壳体 44后侧的外部开口 部 443 (参照图 3 ( a ) ) 等被吸入。
另外， 在发电机 3的前方设置蓄电池 14。 另外， 通过开闭开 闭门 6 (参照图 1 )， 可以容易进行蓄电池 14等的维护。 另夕卜， 在 发电机 3的上方设置排风管道 15， 在排风管道 15的上方设置贮 存引擎 2的燃料的燃料罐 16。
排风管道 15沿左右方向延伸设置，其左右两侧分别开口。排 风管道 1-5 的左右两端部分别通过未图示的螺栓等固定于消声器 箱 13的右面及引擎 2 (气缸体 21等） 的左面。 另外， 排风管道 15被安装于设置在发电机后托架 32的上面的安装座 321上， 对 于安装座 321的详情后述。
下面， 通过图 6及图 7说明进气管道 7·7。 另外， 在此， 作为 例子说明罩主体 41后侧的进气管道 7。 另外， 图 6及图 7所示的 涂黑箭头表示空气的流向。
进气管道 7为在其上侧形成开口部 71的有底的部件。进气管 道 7沿消声器箱 13的后面被配置于从消声器箱 13的上面起的下 方规定位置。 另外， 在进气管道 7的周围， 在罩主体 41的内面粘 贴作为吸音材料的海绵 17。 海绵 17的一部分（图 6所示的海绵 片 171 )设于进气管道 7的上部和消声器箱 13的后面之间， 以仅 覆盖开口部 71的左半部， 即不覆盖开口部 71的右半部的方式形 成。 在进气管道 7的上方， 通过消声器箱 13的后面和海绵 17形 成空气通路 18。
通过这样的构成， 从外部开口部 414吸入了的空气在进气管 道 7内流动， 从开口部 71流入空气通路 18内。 而且， 空气通路 18内的空气沿消声器箱 13上升，从空气通路 18的上端部流出到 空气通路 18外，在燃料罐 16周边流动。这样，从外部开口部 414 吸入了的空气通过进气管道 7被导入罩 4内。 另外， 与此相同， 从外部开口部 412吸入的空气也通过进气管道 7被导入罩 4内。 之后， 在燃料罐 16周边流动的空气从排风管道 15的前端开口部 流入排风管道 15内，从排风管道 15在消声器箱 13流动，从外部 开口部 421排出到罩 4外。
另一方面， 罩 4内的发生音经前后两侧的空气通路 18·18、进 气管道 7.7从外部开口部 412.414泄漏。 另外， 为延长罩 4内的发 生音的衰减距离，优选将进气管道 7从消声器箱 13的上面尽可能 向下方地配置。 下面， 参照图 8 ~图 14对罩主体 41、 消声器箱 13、 进气箱 28进行说明。 另外， 图 10 ( b )及图 14所示的涂黑箭头表示空气 的;^向。
如图 8 ( a )及图 9所示， 在罩主体 41的左侧形成肋部 416。 另外， 与罩主体 41的左侧相同， 在罩主体 41的右侧也形成肋部 416, 但在此作为例子， 对罩主体 41左侧的肋部 416进行说明。 肋部 416由形成于罩主体 41的前侧的前肋部 416A、 和形成于罩 主体 41 的后侧的后肋部 416 B构成。 前后两侧的肋部 416Α·416 Β在安装面 411的自由端侧相对于安装面 411大致垂直地向罩主 体 41的内侧折弯地形成。
如图 8 ( b )所示， 消声器箱 13为将前板 131、 后板 132、 上 板 133、 下板 134及右侧板 135等组合而构成的箱形的部件， 其 左侧开口。 另外， 消声器箱 13的左侧开口部由左侧盖 42覆盖。 在上板 133上形成插通有排气管 24的尾管 243 (排气口 243A ) 的插通孔 133A。 在右侧板 135上形成与排风管道 15的左端部连 接的开口部 135A, 如图 10 ( b ) 所示， 来自排风管道 15的左端 开口部的空气从开口部 135A流入消声器箱 13内。 如图 10及图 11所示， 消声器箱 13通过其右侧板 135的背面 （右侧面 )预先 将发电机进气管道 36 的左端开口部密封， 从而发电机进气管道 36 内的空气不会泄漏。 即， 由发电机进气管道 36和右侧板 135 的背面（右侧面）构成管道构造。 另外， 在右侧板 135的背面（右 侧面） 粘贴作为密封材料的未图示的海绵。 如图 12 所示， 前板 131及后板 132中， 前板 131通过多个 （本实施方式中为四个） 螺栓 19.19…固定于前肋部 416A, 另一方面， 后板 132通过多个 (本实施方式中为四个） 螺栓 19.19…固定于后肋部 416 B。
如图 13及图 14所示， 进气箱 28为将前板 281、 后板 282、 上板 283、 下板 284及左侧板 285等组合而构成的箱形的部件， 其右侧开口。 另外， 进气箱 28的右侧开口部由右侧盖 43覆盖。 在上板 283上的前侧连接进气软管 27的一端部。 另外， 进气软管 27的另一端部与空气滤清器 23连接。 在前板 281及后板 282上 分别形成上述的开口部 281Α·282Α。 其中， 前侧的开口部 281A 以面向外部开口部 413 的方式配置， 另一方面， 后侧的开口部 282Α以面向外部开口部 415的方式配置。 另外， 前板 281及后板 282 中， 前板 281 通过多个（本实施方式中为两个） 螺栓 19·19 固定于前肋部 416A, 另一方面， 后板 282通过多个（本实施方式 为两个） 螺栓 19·19固定于后肋部 416 B 。
另外， 在左侧板 285上形成面向引擎冷却风扇 25的开口部 285Α。 开口部 285Α在侧面看形成为大致圆形状， 其大致上半部 由安装于右侧盖 43的罩 286Α覆盖。 罩 286Α在侧面看形成为横 长的长方形状。 另外， 隔着罩 286Α在前后两侧分别设置内隔板 286 Β -286 C , 并且―， 在前侧的内隔板 286 Β和前板 281之间、 及 在后侧的内隔板 286 C和后板 282 之间分别预先设有外隔板 286D-286E, 通过这些内隔板 286 Β -286 C及外隔板 286D-286E将 进气箱 28内隔开。其中， 内隔板 286 B .286 C立设于下板 284上，. 另一方面，外隔板 286D.286E以从上板 283垂下的方式设置。即， 内隔板 286 Β .286 C及外隔板 286D.286E沿前后方向呈交错状地 配置。
在此， 前侧的外隔板 286D配置于进气箱 28与进气软管 27 的连接部（图 14所示的连接部 C )、 和开口部 281A (外部开口部 413 )之间。 前侧的外隔板 286D由倾斜地面向开口部 281A的倾 斜部 286Da、 和从倾斜部 286Da的下端部 （连接部 C的相反侧的 端部） 垂下并正面面向开口部 281A的竖直部 286Db构成。 倾斜 部 286Da以与开口部 281A的分开距离 （图 14所示的分开距离 L1 )越向下侧越长的方式倾斜。 另外，在前侧的外隔板 286D及内隔板 286 B的彼此对向的侧 的两面、后侧的外隔板 286E及内隔板 286 C的彼此对向的侧的两 面、 以及罩 286A的上端面及下端面分别粘贴海绵 17·17···。 另夕卜， 在进气箱 28的上板 283、 下板 284及左侧板 285的内面也粘贴未 图示的作为吸音材料的海绵。
通过这样的构成，从罩主体 41前侧的外部开口部 413吸入的 空气从开口部 281A流入进气箱 28 内。 而且， 来自开口部 281A 的空气被分流成： 潜入外隔板 286D的下侧后， 经由进气软管 27 吸入于空气滤清器 23的空气； 进而， 超过内隔板 286 Β的上侧， 从开口部 285Α吸入于引擎冷却风扇 25的空气。另外，如上所述， 倾斜部 286Da以与开口部 281A的分开距离 L1越靠下侧、 即空 气的下游侧越长的方式倾斜， 因此， 能够确保外隔板 286D和前 板 281内面之间的空气流过的通路的面积，从而来自开口部 281A 的空气顺畅地流动。 另一方面， 空气滤清器 23的进气音在潜入外 隔板 286D的下侧后， 经开口部 281A从外部开口部 413泄漏。
另外，从罩主体 41后侧的外部开口部 415吸入了的空气从开 口部 282A流入进气箱 28内。 而且， 来自开口部 282A的空气潜 入外隔板 286E的下侧， 超过内隔板 286 C的上侧从开口部 285A 被吸入于引擎冷却风扇 25。 另外， 在进气箱 28 内也流入从右侧 盖 43的外部开口部 431吸入了的空气， 该空气从开口部 285A被 吸入于引擎冷却风扇 25。 这样， 从外部开口部 413·415吸入了的 空气通过进气箱 28被导入引擎冷却风扇 25。 之后， 被吸入于引 擎冷却风扇 25的空气从排风管道 15的右端开口部流入排风管道 15内， 从排风管道 15流过消声器箱 13， 从外部开口部 421排出 到罩 4外。
下面， 通过图 15及图 16说明安装座 321。
安装座 321为金属制的板状部件， 其前后两端部均形成为大 致曲柄状。 在安装座 321的前后两端部形成插入螺栓 321Α·321Α 的未图示的螺栓孔， 通过螺栓 321Α·321Α将安装座 321安装于发 电机后托架 32的上面。 另外，在安装座 321的前后两端部间形成 插入螺栓 321 Β 321 Β的螺栓孔 321 C -321 C，通过螺栓 321 Β -321 Β将排风管道 15固定于安装座 321。
在此， 引擎 2及发电机 3被固定于緩沖支柱 20上。 另外， 排 风管道 15经由安装座 321被固定于发电机 3 (发电机后托架 32 ) 上， 并且也固定于引擎 2上。 由此， 实现排风管道 15、 引擎 2, 发电机 3及緩沖支柱 20的一体化， 可提高它们的刚性。
另外， 在本实施方式中， 虽然为将安装座 321与发电机后托 架 32 (托架）分体设置的构成， 但也可以设为将安装座与托架一 体设置的构成。
下面， 利用图 17 ~图 19说明发电机排风管道 34。 另外， 图 18 ( b ) 所示的涂黑箭头表示空气的流向。
如图 17及图' 18所示，发电机排风管道 34以覆盖发电机冷却 风扇 33及发电机前托架 35的圓周的方式形成， 空气在发电机排 风管道 34 内流动。 另外， 在本实施方式中， 发电机冷却风扇 33 以在左侧面看 （在左右方向从发电机 3侧观察引擎 2侧时） 绕逆 时针旋转的方式构成，发电机排风管道 34内的空气的旋转方向为 逆时针旋转。
发电机排风管道 34具备侧面看向上方开口的形成为大致 U 字状的管道主体 341。 在管道主体 341的旋转上游侧的端部及旋 转下游侧的端部分别设置安装于排风管道 15 的下面的安装部 341A.341 B。 另外， 在管道主体 341的旋转下游侧的端部设置开 口部 341 C。 另外， 开口部 341 C与形成于排风管道 15的下面的 未图示的开口部连接。
另外，在管道主体 341的前后两侧分别形成开口部 341D'341E， 其中， 前侧的开口部 341D由第一隆出罩 342覆盖， 另一方面， 后侧的开口部 341E由第二隆出罩 343覆盖。 这些第一及第二隆 出罩 342.343均以朝向发电机冷却风扇 33的旋转半径方向外侧隆 出的方式形成。
另外， 在发电机排风管道 34内， 发电机冷却风扇 33由具有 第一及第二排风口 351.352的发电机前托架 35覆盖。 如图 19所 示，发电机前托架 35在侧面看预先形成为大致涡卷状， 空气在发 电机前托架 35内流动， 从第一及第二排风口 351.352分别排出。 其中，第一排风口 351在发电机前托架 35的前侧配置于比发电机 冷却风扇 33的旋转中心 （图 18所示的旋转中心 O ) 更上方侧， 另一方面，第二排风口 352在发电机前托架 35的后侧配置于比旋 转中心 O更下方侧。 另外， 在发电机前托架 35内， 空气从形成 于发电机前托架 35的前侧的未图示的开口部流入。
第一隆出罩 342以在其中途部 （图 18所示的折曲部 342A ) 折弯的方式形成， 且以面向第一排风口 351的方式设置。 另外， 第一隆出罩 342中途部的折曲部 342A为在第一隆出罩 342中位 于最前方的部分， 从管道主体 341前面至折曲部 342A的距离为 L2。 第一隆出罩 342由隔着折曲部 342A配置于上游侧的上游侧 斜部 342 B、 和配置于下游侧的下游侧斜部 342 C构成。 其中， 上 游侧斜部 342 B从管道主体 341的前面上部向折曲部 342A倾斜地 延伸设置， 另一方面， 下游侧斜部 342 C从管道主体 341 的前面 下部向折曲部 342A倾斜地延伸设置。
第二隆出罩 343以在其中途部 （图 18所示的折曲部 343A ) 折弯的方式形成， 且以面向第二排风口 352的方式设置。 另外， 第二隆出罩 343中途部的折曲部 343A为在第二隆出罩 343中位 于最后方的部分， 从管道主体 341后面至折曲部 343A的距离为 L30 另外， 在本实施方式中， 距离 L3比距离 L2长。 即， 第二隆 出罩 343比第一隆出罩 342朝向发电机冷却风扇 33的旋转半径方 向外侧更大地隆出。 第二隆出罩 343由隔着折曲部 343A配置于 上游侧的上游侧斜部 343 B、 和配置于下游侧的下游侧斜部 343 C构成。 其中， 上游侧斜部 343 B从管道主体 341的后面下部朝 向折曲部 343A倾斜地延伸设置， 另一方面， 下游侧斜部 343 C从 管道主体 341的后面上朝向折曲部 343A倾斜地延伸设置。
通过这样的构成， 如图 18 ( b )所示， 从发电机前托架 35的 第一排风口 351排出的空气沿第一隆出罩 342的上游侧斜部 342 B顺畅地流动， 同时， 该排出的空气在折曲部 342A 改变方向， 沿下游侧斜部 342 C顺畅地流动。 另外， 从发电机前托架 35的第 二排风口 352排出的空气沿第二隆出罩 343的上游侧斜部 343 B 顺畅地流动， 同时， 该排出的空气在折曲部 343A 改变方向， 沿 下游侧斜部 343 C顺畅地流动。这样，从第一及第二排风口 351.352 排出的空气合流并从发电机排风管道 34的开口部 341 C排出。 之 后， 从开口部 341 C排出的空气从排风管道 15下面的上述开口部 流入排风管道 15内， 从排风管道 15流过消声器箱 13， 从外部开 口部 421排出到罩 4外。
另外， 在本实施方式中， 为根据发电机前托架 35 (托架） 的 第一及第二排风口 351.352的个数设置第一及第二隆出罩 342.343 (隆出部）两者的构成，但也可以为才艮据托架的排风口的个数设置 一个或三个以上的隆出部的构成。 另外， 在本实施方式中， 为将 第一及第二隆出罩 342.343与管道主体 341分体设置的构成， 但 也可以为将隆出部与管道主体一体设置的构成。
如上所述， 提供一种引擎发电机 1 , 其具备： 引擎 2、 由引擎 2驱动的发电机 3、 覆盖引擎 2及发电机 3的罩 4、 收纳引擎 2的 消声器 241.242的消声器箱 13， 其中， 该引擎发电机 1具备： 形 成于罩 4 (罩主体 41 ) 上且将外部的空气吸入罩 4内的外部开口 部 412·414、和将从外部开口部 412·414吸入了的空气导入罩 4内 的进气管道 7·7， 进气管道 7在其上侧形成开口部 71， 沿消声器 箱 13的侧面被配置于从消声器箱 13的上面起的下方规定位置， 且在进气管道 7的上侧和消声器箱 13的侧面之间，以部分覆盖开 口部 71方式设置海绵 17， 且在进气管道 7的上方， 由消声器箱 13的侧面和海绵 17形成空气通路 18。
根据这样的构成， 通过空气通路 18 延长衰减距离， 使罩 4 内的发生音充分衰减， 因此， 能够降低噪音。
而且， 罩 4具备左右两侧开口的罩主体 41、和覆盖罩主体 41 的左右两侧开口部的一对侧盖 42·43, 在罩主体 41的左右两侧开 口部分别形成肋部 416.416, 在两肋部 416·416中左侧的肋部 416 固定有消声器箱 13。
根据这种构成， 通过肋部 416·416提高罩主体 41的刚性， 同 时， 进一步实现罩主体 41及消声器箱 13的一体化而提高它们的 刚性， 由此， 可以降低罩主体 41的振动并降低噪音。
另外， 还具备： 设于引擎 2的引擎冷却风扇 25、 形成于罩 4 (罩主体 41 )上且将外部的空气吸入罩 4内的外部开口部 413·415、 将从外部开口部 413.415吸入了的空气导入引擎冷却风扇 25的进 气箱 28, 引擎 2的空气滤清器 23通过进气软管 27与进气箱 28 连结。
根据这种构成， 由于进气箱 28代替进气腔， 所以不必设置专 用的进气腔也可以。 因此， 通过利用进气箱 28周围的多余空间实 现进气箱 28的大容量化，由此能够降低成为噪音的进气音。另外， 通过废弃专用的进气腔， 也可以有助于由引擎发电机 1整体的轻 量化及零件数量的消减带来的成本降低。
另外， 在两肋部 416.416中的左侧的肋部 416上固定进气箱
28。 根据这种构成， 通过实现罩主体 41及进气箱 28的一体化并 提高它们的刚性， 由此能够降低罩主体 41的振动并降低噪音。
而且， 进气箱 28内由外隔板 286D隔开， 外隔板 286D配置 于进气箱 28与进气软管 27的连接部 C、和外部开口部 413之间。
根据这种构成， 通过外隔板 286D延长衰减距离， 使进气音 充分衰减， 因此， 能够降低噪音。
另外， 在发电机 3的上方设置将罩 4内的空气导出到外部的 排风管道 15, 在发电机 3 (发电机后托架 32 )的上面设置安装排 风管道 15的安装座 321。
根据这种构成， 排风管道 15被安装于发电机 3 (发电机后托 架 32 )上面的安装座 321上。 因此， 通过实现排风管道 15、 发电 机 3及引擎 2的一体化并提高它们的刚性， 能够降低排风管道 15 的振动并降低噪音。
另外， 在发电机 3上设置发电机冷却风扇 33， 发电机冷却风 扇 33由具有第一及第二排风口 351.352的发电机前托架 35覆盖， 发电机前托架 35由发电机排风管道 34覆盖， 在发电机排风管道 34, 以面向第一及第二排风口 351.352 的方式设置以朝向发电机 冷却风扇 33 的旋转半径方向外侧隆出的方式形成了的第一及第 二隆出罩 342·343。
根据这种构成， 通过第一及第二隆出罩 342.343使第一及第 二排风口 351.352 附近的空气容易顺畅地流动， 因此， 发电机排 风管道 34 内整体的空气的流动顺畅， 能够高效地冷却发电机 3 乃至引擎发电机 1整体。
产业上的可利用性
本发明可利用于引擎发电机。

Claims

权 利 要 求
1. 一种引擎发电机， 其具备：
引擎、
由该引擎驱动的发电机、
覆盖所述引擎及发电机的罩、
收纳所述引擎的消声器的消声器箱， 其特征在于，
该引擎发电机具备：
形成于所述罩且将外部的空气吸入所述罩内的第一外部开口 部、
将从该第一外部开口部吸入了的空气导入所述罩内的进气管 道，
该进气管道在其上侧形成开口部， 沿所述消声器箱的侧面被 配置于从所述消声器箱的上面起的下方规定位置，
在所述进气管道的上侧和所述消声器箱的侧面之间， 以部分 覆盖所述开口部的方式设置吸音材料，
在所述进气管道的上方， 由所述消声器箱的侧面和所述吸音 材料形成空气通路。
2. 如权利要求 1所述的引擎发电机， 其特征在于，
所述罩具备两侧开口的罩主体和覆盖该罩主体的两侧开口部 的一对侧盖，
在所述罩主体的两侧开口部分别形成肋部，
在两个所述肋部中的一个肋部上固定所述消声器箱。
3. 如权利要求 1或 2所述的引擎发电机， 其特征在于，
该引擎发电机具备：
设于所述引擎的引擎冷却风扇、
形成于所述罩且将外部的空气吸入所述罩内的第二外部开口 部、
将从该第二外部开口部吸入了的空气导入所述引擎冷却风扇 的进气箱，
在该进气箱上通过进气软管连结所述引擎的空气滤清器。
4. 如权利要求 3所述的引擎发电机， 其特征在于，
在两个所述肋部中的另一肋部上固定所述进气箱。
5. 如权利要求 3所述的引擎发电机， 其特征在于，
所述进气箱内由隔板隔开，
该隔板配置于所述进气箱与所述进气软管的连接部、 和所述 第二外部开口部之间。
6. 如权利要求 1或 2所述的引擎发电机， 其特征在于，
在所述发电机的上方设置将所述罩内的空气导出到外部的排 风管道，
在所述发电机的上面设置安装所述排风管道的安装座。
7. 如权利要求 1或 2所述的引擎发电机， 其特征在于，
在所述发电机上设置发电机冷却风扇，
该发电机冷却风扇由具有排风口的托架覆盖，
该托架由发电机排风管道覆盖，
在该发电机排风管道上， 以面向所述排风口的方式设置以朝 向所述发电机冷却风扇的旋转半径方向外侧隆出的方式形成了的 隆出部。
PCT/CN2011/000143 2011-01-28 2011-01-28 引擎发电机 WO2012100376A1 (zh)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PCT/CN2011/000143 WO2012100376A1 (zh) 2011-01-28 2011-01-28 引擎发电机
US13/982,025 US9429068B2 (en) 2011-01-28 2011-01-28 Engine generator assembly
AU2011357560A AU2011357560B2 (en) 2011-01-28 2011-01-28 Engine generator
ES11856817.9T ES2598629T3 (es) 2011-01-28 2011-01-28 Motor-generador
CN201180045976.5A CN103180575B (zh) 2011-01-28 2011-01-28 引擎发电机
JP2013528495A JP5612213B2 (ja) 2011-01-28 2011-01-28 エンジン発電機
EP11856817.9A EP2669486B1 (en) 2011-01-28 2011-01-28 Engine generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/000143 WO2012100376A1 (zh) 2011-01-28 2011-01-28 引擎发电机

Publications (1)

Publication Number Publication Date
WO2012100376A1 true WO2012100376A1 (zh) 2012-08-02

Family

ID=46580173

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/000143 WO2012100376A1 (zh) 2011-01-28 2011-01-28 引擎发电机

Country Status (7)

Country Link
US (1) US9429068B2 (zh)
EP (1) EP2669486B1 (zh)
JP (1) JP5612213B2 (zh)
CN (1) CN103180575B (zh)
AU (1) AU2011357560B2 (zh)
ES (1) ES2598629T3 (zh)
WO (1) WO2012100376A1 (zh)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102383926B (zh) * 2011-10-23 2013-02-06 浙江乐恒动力科技有限公司 一种发动机驱动的箱式发电机
US9228760B2 (en) 2012-04-27 2016-01-05 Mac, Inc. Flameless heating system
WO2015048549A1 (en) 2013-09-27 2015-04-02 Cummins Inc. Electrical power generation system with multiple path cooling
US10351184B2 (en) 2013-09-30 2019-07-16 Yanmar Co., Ltd. Work vehicle
EP3196438A4 (en) * 2014-09-19 2017-10-04 Yanmar Co., Ltd. Engine generator
JP6223939B2 (ja) * 2014-09-19 2017-11-01 ヤンマー株式会社 舶用エンジン発電機
JP6383969B2 (ja) * 2015-03-03 2018-09-05 ヤンマー株式会社 エンジン発電機
USD773395S1 (en) * 2014-09-26 2016-12-06 Cummins Inc. Genset enclosure
USD763191S1 (en) 2014-09-26 2016-08-09 Cummins Inc. Genset enclosure
US9764837B2 (en) 2014-11-14 2017-09-19 Top Flight Technologies, Inc. Micro hybrid generator system drone
JP6816049B2 (ja) * 2018-02-23 2021-01-20 デンヨー株式会社 エンジン駆動作業機
CN108412608A (zh) * 2018-03-16 2018-08-17 宁德本田动力有限公司 一种低噪音风冷柴油变频发电机组
US10927732B2 (en) * 2018-03-28 2021-02-23 Cummins Power Generation Ip, Inc. Low noise enclosure
US11300034B2 (en) * 2018-05-17 2022-04-12 Champion Power Equipment, Inc. Standby generator air flow management system
JP7082547B2 (ja) * 2018-08-20 2022-06-08 日本車輌製造株式会社 エンジン作業機
CN114790938A (zh) * 2021-01-26 2022-07-26 丁士才 一种节能型风冷柴油数码发电机组

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201034044Y (zh) * 2007-05-28 2008-03-12 汕头市盈动电气有限公司 柴油发电机的消声装置
JP2008082204A (ja) * 2006-09-26 2008-04-10 Yanmar Co Ltd エンジン発電装置
CN101436802A (zh) * 2007-11-12 2009-05-20 本田技研工业株式会社 隔音密闭型发电机
JP2010222998A (ja) 2009-03-19 2010-10-07 Yanmar Co Ltd エンジン発電機

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704697C3 (de) 1976-02-25 1986-08-21 Kabushiki Kaisha Komatsu Seisakusho, Tokio/Tokyo Stromaggregat
JP3038507B2 (ja) * 1991-04-05 2000-05-08 ヤンマーディーゼル株式会社 エンジンの防音ケース
JP3957366B2 (ja) * 1997-07-03 2007-08-15 北越工業株式会社 エンジン駆動型作業機の収納構造
JPH1137509A (ja) * 1997-07-22 1999-02-12 Zexel Corp 空調用室外機
JP3800372B2 (ja) * 1997-07-24 2006-07-26 本田技研工業株式会社 エンジン発電機
JP4054767B2 (ja) * 2001-07-10 2008-03-05 ヤンマー株式会社 防音型発電装置
JP3778429B2 (ja) * 2001-07-10 2006-05-24 ヤンマー株式会社 防音型発電装置
JP3934897B2 (ja) * 2001-09-25 2007-06-20 本田技研工業株式会社 エンジン発電機
JP3977046B2 (ja) * 2001-10-11 2007-09-19 富士重工業株式会社 エンジン発電機
DE60226682D1 (de) 2001-10-11 2008-07-03 Fuji Heavy Ind Ltd Motorgenerator
JP2003214176A (ja) * 2002-01-25 2003-07-30 Asahi Denki Kk 防音形エンジン発電装置
US7482706B2 (en) * 2006-08-25 2009-01-27 Honda Motor Co., Ltd. Engine-driven work machine system
JP4767791B2 (ja) * 2006-08-25 2011-09-07 本田技研工業株式会社 エンジン駆動式作業機
JP4897399B2 (ja) * 2006-08-28 2012-03-14 本田技研工業株式会社 エンジン駆動式作業機
WO2008032414A1 (fr) * 2006-09-14 2008-03-20 Shindaiwa Corporation Générateur de moteur insonore
JP2010022998A (ja) 2008-07-24 2010-02-04 Mitsubishi Electric Corp 空気清浄装置
CN201297203Y (zh) * 2008-09-28 2009-08-26 无锡开普动力有限公司 风冷发电机组

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008082204A (ja) * 2006-09-26 2008-04-10 Yanmar Co Ltd エンジン発電装置
CN201034044Y (zh) * 2007-05-28 2008-03-12 汕头市盈动电气有限公司 柴油发电机的消声装置
CN101436802A (zh) * 2007-11-12 2009-05-20 本田技研工业株式会社 隔音密闭型发电机
JP2010222998A (ja) 2009-03-19 2010-10-07 Yanmar Co Ltd エンジン発電機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2669486A4 *

Also Published As

Publication number Publication date
EP2669486A1 (en) 2013-12-04
EP2669486B1 (en) 2016-07-20
AU2011357560A1 (en) 2013-08-29
CN103180575B (zh) 2015-11-25
ES2598629T3 (es) 2017-01-30
AU2011357560B2 (en) 2015-11-26
JP5612213B2 (ja) 2014-10-22
CN103180575A (zh) 2013-06-26
US9429068B2 (en) 2016-08-30
US20140209045A1 (en) 2014-07-31
JP2013537275A (ja) 2013-09-30
EP2669486A4 (en) 2015-02-25

Similar Documents

Publication Publication Date Title
WO2012100376A1 (zh) 引擎发电机
JP3815703B2 (ja) エンジン発電機
JP3800373B2 (ja) エンジン発電機
JP3800372B2 (ja) エンジン発電機
JP3934896B2 (ja) エンジン発電機
JP2003097283A (ja) エンジン発電機
JP2002004857A (ja) 防音型エンジン駆動作業機
JPH11294160A (ja) エンジン駆動作業機
WO2012100635A1 (zh) 易冷却紧凑型柴油数码发电机
WO2022088545A1 (zh) 电动车风冷散热动力系统及电动车
WO2012100633A1 (zh) 易维护空气滤清器的紧凑型柴油数码发电机
JP3934897B2 (ja) エンジン発電機
JP2008025421A (ja) エンジン発電機
JP5982723B2 (ja) 防音型エンジン駆動作業機
JP2014097117A (ja) 集塵機
JP3800374B2 (ja) エンジン発電機
JP3934898B2 (ja) エンジン発電機
JP2003074362A (ja) エンジン発電機
JP3938868B2 (ja) 防音型発電装置
JP3957095B2 (ja) エンジン発電機の外気導入構造
WO2023116319A1 (zh) 一种吸尘器
JP2009275662A (ja) 作業機械のマフラ冷却構造
JP3016448U (ja) 発動発電装置
JP2018003769A (ja) 吸気ダクト及びエンジン作業機
JPS5937626Y2 (ja) レンジ用換気扇

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11856817

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2013528495

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2011856817

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2011856817

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2011357560

Country of ref document: AU

Date of ref document: 20110128

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 13982025

Country of ref document: US