JP2015224624A - Engine driving work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent rain water from entering a heat exchanger side even if rain comes from an air discharging port toward the heat exchanger in a slant direction during a state in which the operation is stopped and discharging air is stopped.SOLUTION: An engine and a work machine main body driven by the engine are arranged in an engine room 4. A heat exchanger such as a radiator 7 for the engine is arranged at an opening part 8 of a front frame partition plate 6. Then, during operation, after cooling air passes from the engine room 4 into the heat exchanger, and passes through an air discharging chamber 5 in the front frame 1a and is discharged out of an air discharging port 2. The surface of such a heat exchanger facing to the front frame side is covered by a front louver 16 in which a plurality of vanes 17 extending in a horizontal direction while facing in a slant upward direction as seen from the front frame side are disposed while being spaced apart in a vertical direction so as to receive rain water coming from the air discharging port 2 in a slant direction with the vanes 17.

Description

  The present invention relates to an engine-driven work machine such as an engine-driven generator, an engine-driven welder, and an engine-driven compressor that are mainly used outdoors.

  An engine-driven work machine used in outdoor construction work or the like is for driving a work machine body such as a generator, a welder, and a compressor and the work machine body in a metal soundproof case 1 as shown in FIG. The engine is housed. During operation of the work implement, the work implement main body, engine, engine intercooler, radiator, muffler, etc. generate heat, so the engine fan is rotated inside and outside air is taken in from the air intake 3 to provide a soundproof case. After flowing through 1 to cool each part, it is discharged from the air outlet 2.

  FIG. 14 is a view showing the inside of a front frame of a conventional engine-driven working machine. In FIG. 14, reference numerals 1 and 2 correspond to those in FIG. 13, 1a is the front frame, 4 is the engine compartment, 5 is the exhaust chamber, 6 is the front frame partition plate, 7 is the radiator, and 8 is the opening. , 9 is a water receiving plate, 10 and 11 are drain ports, 12 is a water supply port, 13 is a storage unit, and 14 is a work machine base. Although not visible in FIG. 14, an intercooler is also arranged in parallel on the rear side of the radiator 7 in the drawing.

  The work machine main body and the engine for driving the work machine main body are housed in the engine compartment 4, and cooling air is supplied from the engine compartment 4 to the opening 8 of the front frame partition plate 6, the radiator 7, It passes through a heat exchanger such as an intercooler, passes through a wind exhaust chamber 5 in the front frame 1a, and is discharged from the exhaust port 2 to the outside of the machine.

  In such an engine-driven work machine, a large amount of fuel and engine oil are used internally, and if such fuel or engine oil leaks to the outside due to a failure or an erroneous operation, the surrounding environment is harmed. Therefore, even if fuel or engine oil leaks from the engine or work machine main body or the like by providing the storage unit 13 in the lower part of the engine-driven work machine, the fuel and engine oil are stored in the storage unit 13. Oil is not leaked to the outside.

  In addition, the engine-driven work machine sometimes falls into rain because it is used outdoors, but when rain enters from the exhaust vent 2, it flows into the storage section 13 below and the fuel stored in the storage section 13 Engine oil or the like may overflow from the reservoir 13 and contaminate the outside. Therefore, in the engine-driven working machine disclosed in Patent Document 1, the water receiving plate 9 and the drain port 10 are provided at the lower end of the exhaust chamber 5, and rainwater that has entered the exhaust port 2 is received by the water receiving plate 9. The water is discharged from the outlet 10 to the outside of the machine.

  Further, when the engine coolant is insufficient, the coolant is replenished from the water supply port 12. At this time, if water overflows from the water supply port 12, the inside of the machine becomes flooded. Further, in many cases, an antifreeze containing ethylene glycol as a main component is used for the cooling water. Since ethylene glycol is toxic, if it is discharged outside the apparatus, the outside is contaminated. Therefore, the water overflowing from the water supply port 12 flows down through the radiator 7, is discharged from the drain ports 11, 11, and is stored in the storage unit 13.

As described above, the conventional engine-driven work machine can prevent the fuel and engine oil from leaking to the outside even if the fuel and engine oil are handled incorrectly, and rain can be discharged from the air outlet 2.
Even if you get down from the water, you can drain the rainwater that has come down to the outside of the machine to prevent fuel and engine oil from overflowing from the reservoir 13, and even if water overflows from the water inlet 12, It will not be submerged and will not contaminate the outside.

JP 2008-298035 A

  However, when the conventional engine-driven work machine is installed outdoors and rains obliquely toward the radiator 7 or the intercooler from the air outlet 2, the rainwater passes through the radiator 7 or the intercooler. There was a problem that it could get into the plane.

  If the engine-driven work machine is in operation, the exhaust air after cooling the radiator 7 flows from the radiator 7 toward the exhaust port 2, so that rainwater is obstructed by the exhaust air and the engine chamber 4 There is little intrusion. However, when the operation is stopped, there is no exhaust air, so if rain falls obliquely from the air exhaust port 2 toward the heat exchanger such as the radiator 7 or the intercooler, the rainwater becomes a heat exchanger. In such a case, the fuel or engine oil or the like that has flowed into the storage unit 13 through the drain ports 11 and 11 and has been stored in the storage unit 13 overflows from the storage unit 13 and flows out of the machine. was there.

  In the present invention, in view of such a problem, when the exhaust air is stopped while the operation is stopped, the rain may fall obliquely from the exhaust port toward the heat exchanger. Is intended to prevent rainwater from entering the heat exchanger.

  In order to solve the above-mentioned problem, the invention according to claim 1 of the present application divides the interior of the soundproof case into an engine chamber and a wind exhaust chamber in the front frame by the front frame partition plate. A work machine body driven by an engine is disposed, a heat exchanger for the engine is disposed in an opening of the front frame partition plate, and an air exhaust port is formed in an upper surface portion of the front frame. An engine-driven work machine configured to exhaust air from the exhaust chamber through the exhaust chamber after passing air from the engine chamber to the heat exchanger, and the surface on the front frame side of the heat exchanger, It is characterized in that a plurality of louvers extending in the horizontal direction with the surface facing obliquely upward as viewed from the front frame side are covered with a front louver arranged at intervals in the vertical direction. .

  Further, the invention according to claim 2 of the present application is characterized in that, in the invention according to claim 1, the interval between the lower blades among the plurality of blades is increased.

  Further, in the invention according to claim 3 of the present application, in the invention according to claim 1 or 2, the cross-sectional shape of the slats is made to be a U-shape, and the face of the valley fold side faces obliquely upward. It is characterized by.

  The invention according to claim 4 of the present application is the invention according to claim 1, 2, or 3, wherein a partition plate perpendicular to the front surface of the front louver is provided in the vertical direction at the front upper portion of the front louver. Features.

The invention according to claim 5 of the present application is the invention according to claim 1, 2, 3 or 4, wherein the muffler of the engine is arranged at the upper end portion in the front frame, and the slats of the front louver are: It is provided only in a portion below the muffler.

The present invention has the following effects.
That is, in the invention according to claim 1, a plurality of blades extending in the horizontal direction with the surface on the front frame side of the heat exchanger extending in the horizontal direction with the surface obliquely upward when viewed from the front frame side are spaced apart in the vertical direction. Covered with a front louver that has been installed, even if the exhaust is stopped during operation stoppage, it may rain evenly from the exhaust vent toward the heat exchanger. Rainwater can be prevented from entering the heat exchanger side.

  Further, in the invention according to claim 2, in the engine-driven work machine according to claim 1, the interval between the lower slats among the plurality of slats is increased. While reducing the cost and making it easy to escape the exhaust air for cooling the heat exchanger, the incident angle of rainwater becomes large at the bottom, and rainwater does not enter even if the interval between the slats is increased.

  According to a third aspect of the present invention, in the engine-driven work machine according to the first or second aspect, the cross-sectional shape of the slats is a U-shape, and the face on the valley fold side faces obliquely upward. As a result, rainwater received by the slats is more difficult to enter the heat exchanger side.

  According to a fourth aspect of the present invention, in the engine-driven work machine according to the first, second, or third aspect, a partition plate perpendicular to the front surface of the front louver is provided in the vertical direction at the front upper portion of the front louver. Therefore, even if rain falls from the lateral direction, rainwater is received by the partition plate and allowed to flow downward, making it difficult for rainwater to enter the heat exchanger side.

  According to a fifth aspect of the present invention, in the engine-driven work machine according to the first, second, third, or fourth aspect, the engine muffler is disposed at an upper end portion in the front frame, and the wing plate of the front louver. Is provided only in the lower part of the muffler, so that rainwater that pours into the upper part is blocked by the muffler so that it does not enter the heat exchanger side, saving the louver of the front louver and reducing the cost. Can do.

It is a figure which shows the inside of the front frame of the engine drive working machine which concerns on 1st Example of this invention. It is a figure which shows a front louver bracket. It is a figure which shows the front louver in 1st Example. It is the figure which looked at the state which attached the front louver of FIG. 3 from the front frame side. It is a figure which shows the inside of the front frame of the engine drive working machine which concerns on 2nd Example of this invention. It is a figure which shows the inside of the front frame of the engine drive working machine which concerns on 3rd Example of this invention. It is a figure which shows the inside of the front frame of the engine drive working machine which concerns on 4th Example of this invention. It is a figure which shows the inside of the front frame of the engine drive working machine which concerns on 5th Example of this invention. It is a figure which shows the inside of the front frame of the engine drive working machine which concerns on 6th Example of this invention. It is a figure which shows the inside of the front frame of the engine drive working machine which concerns on 7th Example of this invention. It is a figure which shows a vertical partition plate. It is a figure which shows the inside of the front frame of the engine drive working machine which concerns on 8th Example of this invention. It is an external view of an engine drive working machine. It is a figure which shows the inside of the front frame of the conventional engine drive working machine.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a view showing the inside of a front frame of an engine-driven work machine according to a first embodiment of the present invention. In FIG. 1, reference numerals 1 to 14 correspond to those in FIG. 14, 15 is a front louver bracket, 16 is a front louver, and 17 is a slat. The front louver 16 is attached to the front frame partition plate 6 via the front louver bracket 15 and covers the surface on the front frame side of the heat exchanger such as the radiator 7 and the intercooler.

  FIG. 2 is a view showing the front louver bracket, and FIG. 3 is a view showing the front louver. 2 and 3, 151 is a bracket side plate, 152 and 156 are bracket flanges, 153 is a louver receiving portion, 154 is a seal material receiving portion, 155 is a bracket top plate, 157 is an opening for water supply, and 158 is a lower frame Numeral 159 is a bracket opening, 161 is a louver frame, and 162 is a louver flange.

  The front louver bracket 15 is used to attach the front louver 16 to the front frame partition plate 6, and is formed in a rectangular frame shape with bracket side plates 151, bracket top plates 155, and lower frame members 158 on both sides. The bracket side plates 151 on both the left and right sides are provided with a bracket flange 152 having a plurality of bolt holes and a louver receiving portion 153 in the front and rear, and the cross section is Z-shaped as shown in the AA sectional view in FIG. It has become. The bracket top plate 155 is provided with a bracket flange 156 having a plurality of bolt holes on the side of the upper edge facing the front frame partition plate 6. The bracket top plate 155 has a water supply position at a position corresponding to the water supply port 12 on the radiator 7. The opening 157 is provided. And as shown in a BB sectional view in FIG. 2, the cross section is Z-shaped. Further, the lower frame member 158 has an L-shaped cross section as shown in a BB cross sectional view in FIG.

  Such a front louver bracket 15 is brought into contact with the front frame 1a side of the front frame partition plate 6 so as to cover the heat exchanger such as the radiator 7 and the intercooler, and is fixed to the bolt holes of the bracket flange 152 through bolts.

  The front louver 16 is formed by bending a metal plate into an L shape, and a plurality of wing plates 17 are disposed between both side plates of the louver frame 161a so that the surface of the wing plate 17 is viewed from the front frame side so as to extend in the horizontal direction. It is arranged at equal intervals in the vertical direction, obliquely upward. Further, an upper louver frame 161b formed by bending a metal plate into a Z shape is disposed at the upper end of the louver frame 161a. A louver flange 162 having a plurality of bolt holes is provided at the edge of the louver frame 161a and the upper louver frame 161b facing the front louver bracket 15.

The front louver 16 is pressed against the louver receiving portion 153 of the front louver bracket 15 attached to the front frame partition plate 6, and is fixed to the bolt hole of the louver flange 162 with a bolt. 4 shows the state where the front louver 16 is attached as viewed from the front frame 1a side. In this manner, the front louver 16 covers the radiator 7 and the intercooler 70 that are arranged side by side on the front frame 1a side. In FIG. 4, reference numeral 18 denotes a through hole for passing an exhaust pipe (not shown) for sending engine exhaust to a muffler (not shown).

  In the engine-driven work machine to which the front louver 16 is attached in this way, a case where rain has fallen obliquely from the air outlet 2 toward the radiator 7 or the intercooler 70 will be described with reference to FIG. In the figure, the front end of the air exhaust port 2 (when viewed from the front frame 1a side to the engine compartment 4 side, entering the radiator 7 side of the rain lines entering from the air exhaust port 2 at the smallest angle with respect to the horizontal direction. The rain falling from (same) is shown by dotted lines. In this way, rain can be prevented from entering the radiator 7 by the vanes 17 of the front louver 16 regardless of the angle at which rain falls.

  FIG. 5 is a view showing the inside of the front frame of the engine-driven working machine according to the second embodiment of the present invention. In this embodiment, the number of the slats 17 is reduced by doubling the interval between the slats 17 in the lower part of the slats 17 of the front louver 16. That is, as apparent from the rain condition shown in FIG. 5, the lower wing plate 17 does not descend at a small angle with respect to the horizontal direction. However, rain hardly enters the radiator 7 side. If the number of slats 17 is reduced in this way, the manufacturing cost of the front louver 16 can be reduced by that amount, and the exhaust of the exhaust air for cooling the heat exchanger can be improved to increase the cooling effect. be able to.

  FIG. 6 is a view showing the inside of the front frame of the engine-driven working machine according to the third embodiment of the present invention. In this embodiment, the distance between the blades 17 of the front louver 16 is increased as the lower blades 17 reduce the number of blades 17. That is, as apparent from the rain condition shown in FIG. 6, the lower wing plate 17 has a larger raining angle with respect to the horizontal direction. Even if the space between the slats 17 is increased, rain hardly enters the radiator 7 side. If the number of slats 17 is reduced in this way, the manufacturing cost of the front louver 16 can be reduced by that amount, and the exhaust of the exhaust air for cooling the heat exchanger can be improved to increase the cooling effect. be able to.

  Further, in this embodiment, the rear end of the second slat 17 from the top is positioned on a line passing through the front end of the slat 17 that is the uppermost from the front end of the air exhaust port 2. The rear end of the third slat 17 is positioned on a line passing through the front end of the slats, and the slats 17 are sequentially provided in the same manner. In this way, it is possible to completely prevent rain from entering the heat exchanger with the minimum number of slats 17.

  FIG. 7 is a view showing the inside of the front frame of the engine-driven working machine according to the fourth embodiment of the present invention. In this embodiment, as in the first embodiment, the slats 17 are arranged at equal intervals in the vertical direction, but the cross-sectional shape of the slats 17 is a U-shape, and the face on the valley fold side is It is oriented diagonally upward. In this way, rainwater is received at the rear end of the wing plate 17 having an angle while maintaining the ease of exhausting the exhaust air for cooling the heat exchanger, and the rainwater is more difficult to enter the heat exchanger side.

FIG. 8 is a view showing the inside of the front frame of the engine-driven working machine according to the fifth embodiment of the present invention. In this embodiment, as in the second embodiment, the interval between the lower wing plates 17 of the louver plates 17 of the front louver 16 is doubled to reduce the number of wing plates 17, and the wing plates are also reduced. The cross-sectional shape of 17 is formed in a dogleg shape so that the face on the valley fold side faces obliquely upward. In this way, rainwater is received at the rear end of the wing plate 17 having an angle while maintaining the ease of exhausting the exhaust air for cooling the heat exchanger, and the rainwater is more difficult to enter the heat exchanger side.

  FIG. 9 is a view showing the inside of the front frame of the engine-driven working machine according to the sixth embodiment of the present invention. In this embodiment, as in the third embodiment, the interval between the wing plates 17 of the front louver 16 is increased as the lower wing plate 17 reduces the number of wing plates 17, and the wing plate 17 is further reduced. The cross-sectional shape is made like a dogleg shape so that the face of the valley fold side faces obliquely upward. In this way, rainwater is received at the rear end of the wing plate 17 having an angle while maintaining the ease of exhausting the exhaust air for cooling the heat exchanger, and the rainwater is more difficult to enter the heat exchanger side.

  FIG. 10 is a view showing the inside of the front frame of the engine-driven working machine according to the seventh embodiment of the present invention. FIG. 10 (a) is a view seen from the front frame side, and FIG. It is the figure seen from the direction. In this embodiment, two partition plates 19 are provided in the vertical direction on the front upper portion of the front louver 16 of the engine-driven work machine of the sixth embodiment at right angles to the surface of the front louver 16.

  As shown in FIG. 11, the partition plate 19 is formed with a bent portion 192 around the flat portion 191 to improve the strength, and a bolt for attaching to the front louver bracket 15 on the front louver bracket 15 side. A mounting bracket 193 with a hole 194 is provided, and a bolt hole 195 for fixing to the wall surface of the front frame 1a is provided on the opposite side.

  If such a partition plate 19 is provided, not only can the exhaust air flowing through the heat exchanger and flowing toward the exhaust port 2 be rectified to suppress the generation of noise, but the lateral direction of the exhaust port 2 When it starts to rain from (left and right direction in FIG. 10 (a)), it is possible to suppress the rain from being received by the partition plate 19 and dropped to the lower water receiving plate 9 and entering the heat exchanger side. .

  FIG. 12 is a view showing the inside of the front frame of the engine-driven working machine according to the eighth embodiment of the present invention. In FIG. 12, reference numerals 1 to 17 correspond to those in FIG. 1, 20 is a muffler, 21 is an exhaust pipe, and 22 is a fuel tank.

  In the engine-driven work machine of this embodiment, the capacity of the fuel tank 22 is reduced and stored in the front frame 1a in order to reduce the height of the machine. Furthermore, heat exchangers such as the radiator 7 and the intercooler are provided on the engine compartment 4 side. Also, depending on the type of engine-driven work machine, there is an engine muffler installed in the front frame 1a to cool the muffler with exhaust air flowing therethrough, but the muffler 20 becomes hot and the fuel tank Since it is dangerous to install in the vicinity of 22, in the engine-driven work machine of FIG. 12, the muffler 20 is installed on the upper part of the front frame 1 a so as to be as far as possible from the fuel tank 22.

  In such an engine-driven working machine, the muffler 20 has a cylindrical shape and extends in the lateral direction (the direction from the near side to the far side in FIG. 12), so the direction from the exhaust port 2 to the heat exchanger is The rainwater that falls obliquely toward the top hits the muffler 20 and does not go to the heat exchanger side. Accordingly, the upper louver 17 of the front louver 16 is omitted, and the louver 17 is provided only at the lower part. By doing so, the number of slats 17 is reduced, leading to cost reduction.

DESCRIPTION OF SYMBOLS 1 Soundproof case 2 Air exhaust port 3 Air intake port 4 Engine room 5 Air exhaust chamber 6 Front frame partition plate 7 Radiator 8 Opening 9 Water catch plate 10,11 Drain port 12 Water supply port 13 Storage part 14 Work machine base 15 Front louver bracket 16 Front louver 17 Blade 18 Through hole 19 Partition plate 20 Muffler 21 Exhaust pipe 22 Fuel tank

Claims (5)

The interior of the soundproof case is partitioned into an engine chamber and a wind exhaust chamber in the front frame by the front frame partition plate, and an engine and a work machine main body driven by the engine are disposed in the engine chamber. A heat exchanger for the engine is disposed in the opening of the plate, and an exhaust port is formed in the upper surface of the front frame.After passing cooling air from the engine chamber to the heat exchanger, An engine-driven work machine adapted to discharge from the exhaust port through an exhaust chamber;
The front frame side surface of the heat exchanger is covered with a front louver having a plurality of vanes extending in the horizontal direction with the surface facing obliquely upward as viewed from the front frame side and extending horizontally. An engine-driven work machine characterized by   2. The engine-driven work machine according to claim 1, wherein among the plurality of slats, an interval between slats positioned on the lower side is increased.   The engine-driven work machine according to claim 1 or 2, wherein a cross-sectional shape of the slat is formed in a U-shape, and a surface on a side of the valley fold faces obliquely upward.   The engine-driven work machine according to claim 1, 2 or 3, wherein a partition plate perpendicular to the front surface of the front louver is provided in a vertical direction at an upper front portion of the front louver.   5. The engine muffler is disposed at an upper end portion in the front frame, and the slats of the front louver are provided only in a portion below the muffler. The engine-driven work machine described.

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