JP7441130B2 - engine power plant - Google Patents

Description

The present invention relates to an engine power device including an oil guard part and a water receiver.

The engine generator includes an engine, a generator driven by the engine, and a housing that houses equipment including the engine and generator. The engine generator is an example of an engine power device that includes the engine and a driven machine driven by the engine.

Generally, the casing is divided into a base member that supports equipment including the engine and the generator, and a cover member that covers the equipment supported by the base member. Further, the engine generator includes an oil guard that collects oil leaking from a power machine such as the engine.

For example, it is known that the oil guard is arranged under the base member (see, for example, Patent Document 1). In this case, the oil guard collects the leaked oil that has passed through the hole formed in the base member and fallen. Further, the base portion receives water such as rainwater that enters through an opening such as an intake port formed in the cover portion.

Therefore, the leaked oil and the infiltrated water are separated, and the infiltrated water can be discharged from the exhaust port formed in the base portion.

Japanese Patent Application Publication No. 2012-219705

By the way, when the oil guard is an independent member that is stacked under the base member, the height dimension of the engine power device increases, and furthermore, the number of parts constituting the engine power device increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide an engine power unit that can separate leaked oil from water that has entered a housing by virtue of a configuration in which the height of the unit is small and the number of parts is small.

An engine power device according to one aspect of the present invention includes a power machine, a base member, and a cover member. The power machine includes an engine and a driven machine driven by the engine. The base member has a bottom plate portion that supports the power machine, an outer frame portion that partitions an area on the bottom plate portion from other areas, and an oil guard portion that collects leaked oil from the power machine on the bottom plate portion. form. The cover member is a member that is attached to the base member, covers equipment including the power machine disposed on the base member, and has an intake port and an exhaust port formed therein. The base member further includes a water receiver. The water receiving portion is formed inside the outer frame portion in a region including a region below the intake port below the intake port and is partitioned from the oil guard portion, and is configured to prevent water from entering the cover member through the intake port. This is a portion that receives water, and has a discharge hole that communicates with the outside of the base member.

According to the present invention, since the height of the device is small and the number of parts is small, it is possible to provide an engine power device that can separate leaked oil from water that has entered the housing.

FIG. 1 is a perspective view of an engine generator according to an embodiment as seen from the front side. FIG. 2 is a perspective view of the engine generator according to the embodiment as seen from the back side. FIG. 3 is a perspective sectional view of the engine generator according to the embodiment. FIG. 4 is a diagram showing the arrangement of equipment on the base member in the engine generator according to the embodiment. FIG. 5 is a perspective view of the base member seen from the front side of the engine generator according to the embodiment. FIG. 6 is a perspective view of the base member of the engine generator according to the embodiment as seen from the back side. FIG. 7 is a plan view of the base member in the engine generator according to the embodiment. FIG. 8 is a cross-section of the vertical duct and the first water receiver in the engine generator according to the embodiment. FIG. 9 is a sectional view of the second water receiver in the engine generator according to the embodiment.

Embodiments of the present invention will be described below with reference to the drawings. Note that the following embodiments are examples of embodying the present invention, and do not limit the technical scope of the present invention.

[Schematic configuration of engine generator 10]
The engine generator 10 according to the embodiment of the present invention is an example of an engine power device. As shown in FIG. 3, the engine generator 10 includes a power machine 3 including an engine 31 and a driven machine 32 driven by the engine 31.

In the engine generator 10 , the driven machine 32 includes a generator 321 and a blower 322 . The generator 321 is driven by the engine 31 to generate electricity. The blower 322 ventilates the inside of the apparatus in order to cool equipment such as the engine 31 and the generator 321.

As shown in FIGS. 1 to 3, engine generator 10 includes a metal housing 100 that houses power machine 3 and other equipment. The housing 100 includes a base member 1 and a cover member 2 attached to the base member 1.

The base member 1 is provided with a plurality of wheels 101. Engine generator 10 is a portable device. Further, a handle portion 102 and an operation unit 103 are attached to the cover member 2.

The operation unit 103 includes an operation device such as a dial or a switch that accepts human operations, and a display that displays the status of the engine generator 10. In each figure, a forward direction D1, a rearward direction D2, a rightward direction D3, a leftward direction D4, an upward direction D5, and a downward direction D6 of the engine generator 10 are indicated by straight arrows.

As shown in FIG. 3, the base member 1 has a bottom plate part 11 and an outer frame part 12. The bottom plate portion 11 supports internal equipment including the power machine 3. The outer frame portion 12 is formed to stand up from the outer edge of the bottom plate portion 11 . The outer frame part 12 partitions the area on the bottom plate part 11 from other areas. That is, the bottom plate part 11 and the outer frame part 12 form a shallow box with an open top.

The internal equipment includes a fuel tank 41 and electrical components 42. Electrical equipment 42 includes an inverter circuit. Note that the cap 41a of the fuel tank 41 is exposed above the cover member 2 (see FIGS. 1 to 3).

The cover member 2 is connected to the outer frame portion 12 of the base member 1 and covers the internal equipment including the power machine 3 disposed on the base member 1.

As shown in FIGS. 2 and 3, an intake port 21 and an exhaust port 22 are formed in a specific side plate 20, which is one of the left and right side plates of the cover member 2. In this embodiment, the specific side plate 20 is a side plate in the right direction D3.

The exhaust port 22 is formed in the upper direction D5 in the rear direction D2 with respect to the intake port 21. The exhaust port 22 and the exhaust port 22 are each a collection of a plurality of openings.

As shown in FIG. 4, the engine generator 10 further includes a muffler 44 disposed on the base member 1. The muffler 44 guides exhaust gas from the engine 31 to the exhaust port 22. One end of the muffler 44 is connected to the engine 31 by a connecting pipe 44a, and the other end of the muffler 44 is a gas discharge portion 44b.

In addition, in FIG. 4, the cover member 2 and the fuel tank 41 are shown by imaginary lines (two-dot chain lines).

The exhaust ports 22 include a first exhaust port 22a through which air that has exchanged heat with the engine 31, the power machine 3, and the electrical equipment 42 is discharged, and a second exhaust port 22b through which the exhaust gas discharged from the gas discharge portion 44b passes. including. The gas discharge part 44b is arranged to face the second exhaust port 22b (see FIGS. 2 and 3).

As shown in FIGS. 3 and 4, the engine generator 10 includes a main partition plate 13. As shown in FIGS. The main partition plate 13 partitions the accommodation space above the bottom plate portion 11 into a first internal space S1 and a second internal space S2. The accommodation space is a space covered with the cover member 2 above the bottom plate part 11. In this embodiment, the second internal space S2 is on the rear direction D2 side with respect to the first internal space S1.

The engine 31, the power machine 3, the fuel tank 41, and the electrical components 42 are arranged in the first internal space S1 (see FIGS. 3 and 4). The muffler 44 is arranged in the second internal space S2.

As shown in FIGS. 3 to 5, the main partition plate 13 includes a lower main partition part 131 formed integrally with the base member 1 and an upper main partition part 132 connected to the lower main partition part 131. The lower main partition 131 partitions the inner area of the outer frame 12 into two, and the upper main partition 132 partitions the space above the lower main partition 131 into two.

The intake port 21 communicates with the first internal space S1, and the exhaust port 22 communicates with the second internal space S2.

As shown in FIGS. 3 and 4, the blower 322 is disposed on the opposite side of the engine 31 from the intake port 21 side. The generator 321 is arranged on the intake port 21 side with respect to the engine 31. The electrical component 42 is arranged on the intake port 21 side with respect to the generator 321. Fuel tank 41 is arranged above generator 321 and electrical components 42 .

The blower 322 has an inlet 322a that takes in air and an outlet 322b that discharges air (see FIG. 4). The intake port 322a is formed facing the engine 31.

As shown in FIG. 4, the upper main partition portion 132 of the main partition plate 13 is formed with a first opening 13a that allows the discharge port 322b of the blower 322 to communicate with the second internal space S2. Further, the upper main partition portion 132 is also formed with a second opening 13b through which a connecting pipe 44a connecting the muffler 44 and the engine 31 passes.

When the blower 322 operates, air flows into the cover member 2 through the intake port 21, and after cooling the electrical components 42, the generator 321, and the engine 31, the blower 322 blows the air from the first internal space S1. It is sent to the second internal space S2. Further, the air sent to the second internal space S2 is exhausted to the outside of the device through the first exhaust port 22a.

The engine generator 10 needs to include an oil guard that collects leaked oil from the power machine 3 such as the engine 31. Furthermore, the engine generator 10 also needs to have a structure for receiving water such as rainwater that enters into the housing 100 through an opening such as the intake port 21.

By the way, if the oil guard is an independent member that is stacked under the base member 1, the height of the engine generator 10 will increase, and the number of parts that make up the engine generator 10 will also increase.

On the other hand, the engine generator 10 has a structure in which the leaked oil and the infiltrated water can be separated because the height of the device is small and the number of parts is small. The structure will be explained below.

In the engine generator 10, the base member 1 forms an oil guard part 1x that collects the leaked oil from the power machine 3 on the bottom plate part 11 (see FIGS. 3 to 6).

In this embodiment, the portion of the base member 1 on the first internal space S1 side from the lower main partition portion 131 is the oil guard portion 1x.

As shown in FIGS. 3, 5, and 6, a pedestal 1a is provided on the bottom plate portion 11 of the base member 1 that forms the oil guard portion 1x. The internal equipment including the power machine 3 is supported by a pedestal 1a protruding from the bottom plate portion 11.

That is, the bottom plate portion 11 supports the internal equipment including the power machine 3 via the pedestal 1a. Thereby, a space in which the leaked oil accumulates is secured between the bottom plate portion 11 and the internal equipment.

As shown in FIG. 5, a waste oil valve 1b is provided in a portion of the outer frame portion 12 that forms a part of the oil guard portion 1x. By opening the waste oil valve 1b, the leaked oil accumulated in the oil guard portion 1x is discharged to the outside of the base member 1 through the waste oil valve 1b.

In the following description, the area below the intake port 21 inside the outer frame 12 will be referred to as the intake port lower area A1, and the area below the exhaust port 22 inside the outer frame 12 will be referred to as the exhaust port bottom area. It is called area A2 (see FIG. 7). In addition, in FIG. 7, the cover member 2 is shown by a virtual line.

The area under the intake port A1 is a part of the first internal space S1, and the area below the exhaust port A2 is a part of the second internal space S2.

The engine generator 10 includes a water receiver 5 that receives the water that enters the cover member 2 through the intake port 21 (see FIGS. 5 to 7). The water receiving portion 5 is formed inside the outer frame portion 12 in a region including the inlet lower region A1 and partitioned off from the oil guard portion 1x.

A drain hole 5a communicating to the outside of the base member 1 is formed in the water receiving portion 5 (see FIG. 7). The infiltrated water that has fallen into the water receiver 5 flows out of the base member 1 through the discharge hole 5a before overflowing from the water receiver 5.

In this embodiment, the oil guard part 1x and the water receiving part 5 are provided on the base member 1 in a state where they are partitioned from each other. As a result, separation of the leaked oil and the infiltrated water is achieved by a configuration in which the engine generator 10 has a small height dimension and a small number of parts.

In the engine generator 10, the water receiving portion 5 is formed across the intake port lower region A1 and the exhaust port lower region A2. Specifically, the water receiver 5 includes a first water receiver 51 formed in the lower region A1 of the intake port, and a second water receiver 52 formed in the lower region A2 of the exhaust port. The first water receiver 51 and the second water receiver 52 are adjacent to each other.

In other words, the first water receiver 51 is provided in the first internal space S1, and the second water receiver 52 is provided in the second internal space S2. The first internal space S1 includes a region A1 under the intake port and a space above the first water receiving portion 51. The second internal space S2 includes the area below the exhaust port A2 and the space above the second water receiver 52.

As shown in FIG. 8, the first water receiving portion 51, which forms part of the water receiving portion 5, is formed inside the outer frame portion 12 at a distance from the bottom plate portion 11. Thereby, the area occupied by the oil guard part 1x inside the outer frame part 12 is not narrowed by the first water receiving part 51.

Specifically, the first water receiving part 51 has a facing plate part 511 and a first partition part 512 (see FIGS. 6 to 8). The opposing plate portion 511 is a plate-shaped portion that faces the bottom plate portion 11 with a gap therebetween. The first partition portion 512 is formed into a plate shape that stands up from the outer edge of the opposing plate portion 511, and partitions the area on the opposing plate portion 511 inside the outer frame portion 12 from other areas.

A communication opening 512a is formed in the first partition 512 to communicate the first water receiver 51 and the second water receiver 52 (see FIGS. 6 and 8). The communication opening 512a is a slit-shaped opening along the opposing plate portion 511 (see FIG. 8).

In this embodiment, a part of the lower main partition part 131 also serves as a part of the first partition part 512 that partitions off the second water receiving part 52 . The communication opening 512a is formed in a portion of the lower main partition portion 131 that also serves as the first partition portion 512.

On the other hand, the second water receiving portion 52 includes a bottom plate specifying portion 521 and a second partition portion 522, which are a portion of the area A2 below the exhaust port in the bottom plate portion 11 (see FIGS. 6, 7, and 9). The second partition portion 522 is formed in a plate shape that stands up from the outer edge of the bottom plate specific portion 521, and partitions the area above the bottom plate specific portion 521 inside the outer frame portion 12 from other areas.

In this embodiment, a part of the lower main partition part 131 also serves as a part of the second partition part 522 that partitions off the oil guard part 1x.

The bottom plate specifying portion 521 is a portion that receives the infiltrated water flowing from the first water receiving portion 51 through the communication opening 512a. In addition, the bottom plate identifying portion 521 also receives water that enters into the cover member 2 through the exhaust port 22 .

A discharge hole 5a is formed in the bottom plate identification portion 521 (see FIG. 7). Therefore, the infiltrated water that has fallen into the first water receiver 51 via the intake port 21 flows out of the base member 1 via the second water receiver 52 and the discharge hole 5a. On the other hand, the infiltrated water that has fallen into the second water receiving portion 52 via the exhaust port 22 directly flows out of the base member 1 through the discharge hole 5a.

Moreover, the main partition plate 13 partitions into a first internal space S1 communicating with the intake port 21 and a second internal space S2 communicating with the exhaust port 22. As a result, the main partition plate 13 prevents water that has entered through the intake port 21 from directly falling into the second water receiving portion 52, and water that has entered through the exhaust port 22 from directly falling into the first water receiving portion 51. prevent.

The engine generator 10 further includes an introduction duct 6 provided in the first internal space S1 (see FIGS. 3 and 8). The introduction duct 6 is provided in the space above the base member 1 in a region facing the air intake port 21 .

The introduction duct 6 guides air that has entered the cover member 2 through the intake port 21 toward the first water receiving portion 51 along the vertical direction. The introduction duct 6 prevents the infiltrated water that has entered together with the air through the intake port 21 from scattering to parts other than the first water receiving part 51.

In this embodiment, the introduction duct 6 has a first vertical duct 61 and a second vertical duct 62 (see FIGS. 3 and 8). The first vertical duct 61 guides air that has entered the cover member 2 through the intake port 21 upward. The second vertical duct 62 guides the air that has passed through the first vertical duct 61 downward toward the first water receiving portion 51 .

Therefore, the infiltrated water that has entered together with the air through the intake port 21 tends to fall to the bottom of the first vertical duct 61 due to its own weight, and is difficult to reach the second vertical duct 62 .

As shown in FIG. 8, the inner bottom surface 61a of the first vertical duct 61 is inclined diagonally downward from the partition wall portion 61b on the second vertical duct 62 side toward the lower edge portion 21a of the intake port 21 in the cover member 2. It is formed as follows.

Therefore, after the infiltrated water falls onto the bottom surface 61a of the first vertical duct 61, it quickly flows out of the cover member 2 through the air intake port 21.

The engine generator 10 further includes a sound absorbing member 60 attached to the inside of the second vertical duct 62 and to the outer surface of the second vertical duct 62 on the power machine 3 side. The sound absorbing member 60 suppresses noise generated by the power machine 3 from propagating outside the cover member 2 through the introduction duct 6 and the air intake port 21.

The engine generator 10 further includes a horizontal duct 7 provided in the first internal space S1 (see FIGS. 3 to 7).

The horizontal duct 7 is arranged facing the bottom plate part 11. The horizontal duct 7 has an inlet opening 7a facing the area above the first water receiving part 51 and an outlet opening 7b facing the area where the engine 31 is arranged, and has a horizontal direction from the inlet opening 7a to the outlet opening 7b. It forms a wind path.

As shown in FIG. 3, the electrical component 42 is arranged between the introduction duct 6 and the power machine 3. As shown in FIG. 8, the inlet opening 7a of the horizontal duct 7 is located at a position opposite to the lower end of the introduction duct 6 with a gap leading to the air passage formed between the introduction duct 6 and the electrical component 42. It is formed.

Therefore, the air that has passed through the introduction duct 6 is efficiently branched into an air path toward the electrical component 42 and into the horizontal duct 7.

As shown in FIG. 3, the outlet opening 7b of the horizontal duct 7 is formed at a position below the generator 321. Thereby, the air that has passed through the horizontal duct 7 cools the generator 321 and the engine 31 adjacent to the generator 321 into the efficiency liquid.

The engine generator 10 further includes a sound absorbing member 70 disposed within the horizontal duct 7 (see FIGS. 3 and 7). The sound absorbing member 70 suppresses noise generated by the power machine 3 from propagating outside the cover member 2 through the horizontal duct 7 and the intake port 21.

For example, a porous foam member such as urethane sponge material, glass wool, or the like is employed as the sound absorbing members 60, 70.

As shown in FIG. 7, the sound absorbing member 70 includes a plurality of sound absorbing plates 70a, each of which blocks a portion of the inside of the horizontal duct 7. In the example shown in FIG. 7 , the sound absorbing member 70 includes two sound absorbing plates 70 a that are arranged to protrude inward from each of a pair of opposing side surfaces of the horizontal duct 7 .

The plurality of sound absorbing plates 70a form a meandering air passage within the horizontal duct 7, and block the entire outlet opening 7b when viewed from the inlet opening 7a. Thereby, the plurality of sound absorbing plates 70a efficiently absorb noise.

Further, the plurality of sound absorbing plates 70a are provided so as to be inclined from the inlet opening 7a side to the outlet opening 7b side (see FIG. 7). Thereby, the resistance of the plurality of sound absorbing plates 70a to the air flowing in the horizontal duct 7 is suppressed.

1: Base member 1a: Pedestal 1b: Waste oil valve 1x: Oil guard section 2: Cover member 3: Power machine 5: Water receiving section 5a: Discharge hole 6: Introductory duct 7: Side duct 7a: Inlet opening 7b: Outlet opening 10 : Engine generator 11 : Bottom plate part 12 : Outer frame part 13 : Main partition plate 13a : First opening 13b : Second opening 21 : Intake port 22 : Exhaust port 31 : Engine 32 : Driven machine 41 : Fuel tank 41a : Cap 42 : Electrical equipment 44 : Muffler 51 : First water receiver 52 : Second water receiver 60 : Sound absorbing member 61 : First vertical duct 62 : Second vertical duct 70 : Sound absorbing member 70a : Sound absorbing plate 100 : Housing Body 131 : Lower main partition part 132 : Upper main partition part 321 : Generator 322 : Blower 511 : Opposing plate part 512 : First partition part 512a : Communication opening 521 : Bottom plate identification part 522 : Second partition part A1 : Intake port Lower area A2: Exhaust port lower area

Claims (10)

A power machine including an engine and a driven machine driven by the engine;
A base member that has a bottom plate part that supports the power machine and an outer frame part that partitions an area on the bottom plate part from other areas, and forms an oil guard part that collects leaked oil from the power machine on the bottom plate part. and,
a cover member attached to the base member, covering equipment including the power machine disposed on the base member, and having an intake port and an exhaust port formed therein;
The base member is
A water receiving portion is formed inside the outer frame portion in a region below the intake port including the area below the intake port and is partitioned from the oil guard portion, and receives infiltrated water that enters into the cover member through the intake port. It further has
At least a portion of the water receiving portion is formed inside the outer frame portion at an interval in the vertical direction with respect to the bottom plate portion,
The water receiving part is
a first water receiving portion formed in the lower region of the intake port;
a second water receiver formed in a region below the exhaust port below the exhaust port;
The first water receiving portion includes a facing plate portion facing the bottom plate portion at a distance in the vertical direction, and a region on the facing plate portion inside the outer frame portion partitioned from another region; a first partition portion in which a communication opening is formed to communicate the first water receiving portion and the second water receiving portion ;
The second water receiving section is an engine power unit configured to receive the infiltrating water flowing from the first water receiving section through the communication opening . a muffler disposed on the base member to guide exhaust gas from the engine to the exhaust port;
A space above the bottom plate part is connected to the intake port and includes a space above the first water receiving part and the power machine is disposed in a first internal space, and a space above the exhaust port is connected to the second water receiving part. further comprising a main partition plate that partitions the muffler into a second internal space that includes a space above the receiving part and in which the muffler is disposed;
The driven machine includes a blower disposed on the opposite side of the intake port with respect to the engine,
The main partition plate is formed with a first opening that communicates the air discharge port of the blower with the second internal space, and a second opening that is penetrated by a connecting pipe that connects the muffler and the engine. The engine power device according to claim 1. Further, an introduction duct is provided in a region facing the air intake port in a space above the base member, and guides air that has entered the cover member through the air intake port toward the water receiving portion along the longitudinal direction. The engine power device according to claim 1 or claim 2. The introduction duct is
a first vertical duct that guides air that has entered the cover member through the intake port upward;
The engine power plant according to claim 3, further comprising a second vertical duct that guides the air that has passed through the first vertical duct downward toward the water receiver. According to claim 4, the inner bottom surface of the first vertical duct is formed to be inclined obliquely downward from the partition wall on the second vertical duct side toward the lower edge of the intake port in the cover member. Engine power plant as described. A power machine including an engine and a driven machine driven by the engine;
A base member that has a bottom plate part that supports the power machine and an outer frame part that partitions an area on the bottom plate part from other areas, and forms an oil guard part that collects leaked oil from the power machine on the bottom plate part. and,
a cover member attached to the base member, covering equipment including the power machine disposed on the base member, and having an intake port and an exhaust port formed therein;
The base member is
A water receiving portion is formed inside the outer frame portion in a region below the intake port including the area below the intake port and is partitioned from the oil guard portion, and receives infiltrated water that enters into the cover member through the intake port. It further has
The bottom plate has an inlet opening facing the area above the water receiving part and an outlet opening facing the area where the engine is placed, and a lateral side extending from the inlet opening to the outlet opening. a horizontal duct forming an air path in the direction ;
an introduction duct that is provided in a region facing the air intake port in a space above the base member and guides air that has entered the cover member through the air intake port toward the water receiving portion along the vertical direction;
further comprising an electrical component supported by the bottom plate portion and disposed between the introduction duct and the power machine,
The inlet opening of the horizontal duct is formed at a position separated from the lower end of the introduction duct by a gap leading to an air passage formed between the introduction duct and the electrical component.
Engine power plant. A power machine including an engine and a driven machine driven by the engine;
A base member that has a bottom plate part that supports the power machine and an outer frame part that partitions an area on the bottom plate part from other areas, and forms an oil guard part that collects leaked oil from the power machine on the bottom plate part. and,
a cover member attached to the base member, covering equipment including the power machine disposed on the base member, and having an intake port and an exhaust port formed therein;
The base member is
A water receiving portion is formed inside the outer frame portion in a region below the intake port including the area below the intake port and is partitioned from the oil guard portion, and receives infiltrated water that enters into the cover member through the intake port. It further has
The bottom plate has an inlet opening facing the area above the water receiving part and an outlet opening facing the area where the engine is placed, and a lateral side extending from the inlet opening to the outlet opening. a horizontal duct forming an air path in the direction;
a sound absorbing member disposed within the horizontal duct ;
An engine power unit further comprising: The sound absorbing member includes a plurality of sound absorbing plates each blocking a part of the inside of the horizontal duct,
The engine power plant according to claim 7 , wherein the plurality of sound absorbing plates form a meandering air passage within the horizontal duct and block the entire outlet opening when viewed from the inlet opening. The engine power device according to claim 8 , wherein each of the plurality of sound absorbing plates is provided to be inclined from the inlet opening side to the outlet opening side. The driven machine includes a generator disposed on the intake port side with respect to the engine,
The engine power plant according to any one of claims 6 to 9 , wherein the outlet opening of the horizontal duct is formed at a position below the generator.

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