JP6126934B2 - Engine driven work machine - Google Patents

Description

  The present invention relates to an engine-driven work machine including a water generating device that evaporates raw water with engine waste heat and condenses the evaporated water vapor to generate purified water.

  As an engine-driven work machine, water (raw water) such as rivers is taken into the water pump, a part of the taken raw water is branched, the branched raw water is evaporated by the waste heat of the engine, and the raw water is branched from the evaporated steam It is known that the water is condensed to produce purified water.

According to the engine-driven working machine, while driving the water pump, a part of the raw water taken into the water pump is guided to the raw water branch pipe, and the guided raw water is guided to the engine exhaust pipe through the raw water branch pipe. The guided raw water is evaporated by the waste heat of the exhaust pipe (that is, the waste heat of the engine), and the evaporated water vapor is raised along the communication pipe to the raw water branch pipe. Purified water is generated by condensing the raised water vapor with the raw water in the raw water branch pipe. The generated purified water is used as drinking water, for example.
Here, in the evaporator, the raw water is evaporated by the waste heat of the engine to become steam. In the aggregator, water vapor is condensed to become purified water (for example, see Patent Document 1).

JP 2012-24699 A

The engine-driven work machine of Patent Document 1 is configured to provide a plurality of fins inside the communication pipe and prevent the intrusion of raw water with the plurality of fins. Therefore, the raw water of the evaporator can be prevented from entering the aggregator through the communication pipe.
However, by providing a plurality of fins inside the communication pipe, the flow path of the connection pipe meanders and becomes longer. Therefore, when the water vapor evaporated in the evaporator is guided to the aggregator through the communication pipe, it is conceivable that a part of the water vapor is condensed in the middle of the communication pipe and dropped into the evaporator.
For this reason, it is difficult to efficiently guide the water vapor evaporated in the evaporator to the aggregator.

  An object of the present invention is to provide an engine-driven work machine that prevents raw water from entering a coagulator and can efficiently guide water vapor evaporated by the evaporator to the coagulator.

  The invention according to claim 1 is a closed-type raw water tank for storing raw water, an evaporator for evaporating raw water supplied from the raw water tank with engine waste heat to form water vapor, and water vapor evaporated by the evaporator In the engine drive working machine provided with the aggregator that condenses the water to generate purified water, the evaporator includes a first wall part and a plurality of walls including a second wall part continuous with one end of the first wall part. An evaporation container formed in a polygonal frame shape at the part, a heating part housed in the evaporation container and communicated with the gas intake part of the first wall part, and provided on the first wall part, Of the plurality of wall portions, the raw water intake portion communicated with the raw water extraction portion of the raw water tank, the air vent portion provided in the second wall portion and communicated with the internal space of the raw water tank, and the plurality of wall portions. A first communication portion provided on a third wall portion facing the wall portion; and the plurality of wall portions A second communication part provided on a fourth wall part facing the second wall part, wherein the first communication part and the second communication part are opened to the outside of the evaporation container, and And an upper opening provided between the upper part of the heating unit and the aggregator, and a lower opening opened inside the evaporation container.

  In the invention according to claim 2, the evaporation container is formed in a rectangular frame shape by the first to fourth wall portions, and is adjacent to corner portions of the first wall portion and the fourth wall portion. The raw water intake portion is provided, the air vent portion is provided adjacent to the corner portions of the first wall portion and the second wall portion, and adjacent to the corner portions of the second wall portion and the third wall portion. A first communication portion is provided, and a second communication portion is provided adjacent to corner portions of the third wall portion and the fourth wall portion.

  According to a third aspect of the present invention, the aggregator includes an open hole that opens the interior of the aggregator to the atmosphere, and the lower opening of the first communication part and the second communication part is an upper part of the heating part. And between the lower part and the lower part.

  In the invention which concerns on Claim 1, the raw | natural water intake part was provided in the 1st wall part, and the air vent part was provided in the 2nd wall part. Moreover, the 1st communication part was provided in the 3rd wall part facing a 1st wall part, and the 2nd communication part was provided in the 4th wall part facing a 2nd wall part. Further, the upper openings of the first communication part and the second communication part were opened to the outside of the evaporation container and provided between the upper part of the heating part and the aggregator.

By providing the upper openings of the first communication part and the second communication part between the upper part of the heating part and the aggregator, the surface of the raw water is placed above the heating part in a state where the engine-driven work machine is horizontally disposed. Can be located.
Thereby, the raw | natural water in an evaporator can be efficiently evaporated in a heating part.

Moreover, when an engine drive working machine inclines so that a 3rd wall part may be located below, raw | natural water can be discharged | emitted outside from the upper opening part of a 1st communication part. Here, the upper opening of the first communication part is provided between the upper part of the heating part and the aggregator.
Thereby, raw water can be prevented from entering the aggregator by discharging the raw water from the upper opening of the first communication portion to the outside.

  Furthermore, the user can visually check the raw water discharged from the upper opening to the outside by discharging the raw water from the upper opening of the first communication portion to the outside. Thereby, the user can recognize that the engine-driven work machine is inclined.

In addition, when the engine-driven work machine is inclined so that the fourth wall portion is positioned below, the raw water can be discharged to the outside from the upper opening of the second communication portion. Here, the upper opening of the second communication part is provided between the upper part of the heating part and the aggregator.
Thereby, raw water can be prevented from entering the aggregator by discharging the raw water from the upper opening of the second communication portion to the outside.

  Furthermore, the user can visually check the raw water discharged from the upper opening to the outside by discharging the raw water from the upper opening of the second communication portion to the outside. Thereby, the user can recognize that the engine-driven work machine is inclined.

Moreover, when an engine drive working machine inclines so that a 2nd wall part may be located below, the air vent part of a 2nd wall part can be closed with raw | natural water. Here, the air vent is communicated with the internal space of the raw water tank. By connecting the internal space of the raw water tank and the internal space of the evaporator through the air vent, the raw water in the raw water tank can be guided into the evaporator.
Thereby, by closing an air vent part with raw | natural water, it can stop guiding the raw | natural water of a raw | natural water tank in an evaporator, and can prevent that raw | natural water penetrate | invades into a coagulator.

In addition, by providing the first communication portion on the third wall portion and the second communication portion on the fourth wall portion, intrusion of raw water into the aggregator can be prevented. Therefore, unlike the prior art, it is not necessary to provide a plurality of fins inside the communication pipe to prevent intrusion of raw water.
Thereby, the water vapor evaporated by the evaporator can be efficiently guided to the aggregator, and a sufficient amount of purified water (distilled water) can be secured.

  In the invention which concerns on Claim 2, the evaporation container was formed in the rectangular frame shape by the 1st-4th wall part, and the air vent part was provided adjacent to the corner | angular part of a 1st wall part and a 2nd wall part. . Furthermore, the 1st communication part was provided adjacent to the corner | angular part of a 2nd wall part and a 3rd wall part, and the 2nd communication part was provided adjacent to the corner | angular part of a 3rd wall part and a 4th wall part.

Therefore, when the engine-driven work machine is inclined so that the third wall portion is positioned below, the raw water can be discharged to the outside from the upper opening of the first communication portion. Here, the upper opening of the first communication part is provided between the upper part of the heating part and the aggregator.
Thereby, raw water can be prevented from entering the aggregator by discharging the raw water from the upper opening of the first communication portion to the outside.

  Furthermore, the user can visually check the raw water discharged from the upper opening to the outside by discharging the raw water from the upper opening of the first communication portion to the outside. Thereby, the user can recognize that the engine-driven work machine is inclined.

In addition, when the engine-driven work machine is inclined so that the fourth wall portion is positioned below, the raw water can be discharged to the outside from the upper opening of the second communication portion. Here, the upper opening of the second communication part is provided between the upper part of the heating part and the aggregator.
Thereby, raw water can be prevented from entering the aggregator by discharging the raw water from the upper opening of the second communication portion to the outside.

  Furthermore, the user can visually check the raw water discharged from the upper opening to the outside by discharging the raw water from the upper opening of the second communication portion to the outside. Thereby, the user can recognize that the engine-driven work machine is inclined.

Moreover, when an engine drive working machine inclines so that a 2nd wall part may be located below, the air vent part of a 2nd wall part can be closed with raw | natural water. Therefore, it is possible to stop guiding the raw water in the raw water tank into the evaporator.
Here, the 1st communication part is provided adjacent to the corner | angular part of a 2nd wall part and a 3rd wall part. Therefore, when an engine drive work machine inclines so that a 2nd wall part may be located below, raw | natural water can be discharged outside from the upper opening part of a 1st communication part.
In this way, the raw water in the raw water tank is stopped from being introduced into the evaporator, and further, the raw water is discharged from the upper opening of the first communication portion to the outside, thereby preventing the raw water from entering the aggregator. .

An air vent is provided adjacent to the corners of the first wall and the second wall. Therefore, when an engine drive working machine inclines so that a 1st wall part may be located below, the air vent part of a 2nd wall part can be closed with raw water.
Thereby, it can stop guiding the raw | natural water of a raw | natural water tank in an evaporator, and can prevent that raw | natural water penetrate | invades into a coagulator.

Thus, when the engine-driven work machine is inclined in four directions (all directions) so that the first to fourth wall portions are positioned below, raw water can be prevented from entering the aggregator.
Thereby, the usability of an engine drive working machine can be improved and the quality of a product can be improved.

In the invention according to claim 3, the aggregator is provided with an open hole, and the inside of the aggregator is opened to the atmosphere through the open hole. Furthermore, the lower opening part of the 1st communication part and the 2nd communication part was provided between the upper part and the lower part of the heating part.
Therefore, when the raw water (water surface) of the evaporator is located below the lower part of the heating unit, the lower openings of the first communication part and the second communication part are located above the water surface of the raw water.
In this state, the air heated by the heating unit rises and is discharged to the outside through the opening hole of the aggregator. As a result, natural convection occurs, and external air is guided to the inside of the evaporator through the first communication part and the second communication part, and the heating part can be cooled by the guided air.

It is a perspective view which shows the state which looked at the engine drive working machine which concerns on this invention from the front side. It is a perspective view which shows the state which looked at the engine drive work machine of FIG. 1 from the back side. It is a perspective view which shows the state seen from the left side (engine side) which shows the water production | generation part of FIG. It is a disassembled perspective view which shows the water production | generation part of FIG. FIG. 5 is an enlarged view of part 5 of FIG. 4. FIG. 6 is a sectional view taken along line 6-6 of FIG. It is a top view which shows the evaporator of FIG. FIG. 6 is a view taken in the direction of arrow 8 in FIG. 5 and shows a state in which a main part is viewed in cross section. It is a figure explaining the example which inclined so that the 3rd wall part of the water production | generation part concerning this invention may be located below. It is a figure explaining the example which inclined so that the 4th wall part of the water production | generation part concerning this invention may be located below. It is a figure explaining the example which inclined so that the 2nd wall part of the water production | generation part concerning this invention may be located below. It is a figure explaining the example which inclined so that the 1st wall part of the water production | generation part concerning this invention may be located below. It is a figure explaining the example which the raw | natural water stored in the evaporator which concerns on this invention decreased to the downward direction of a heating part.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. In the drawing, the front, rear, left side and right side are indicated by “Fr”, “Rr”, “L” and “R”.

An engine-driven work machine 10 according to an embodiment will be described.
As shown in FIGS. 1 and 2, the engine-driven work machine 10 is integrated with a frame 11 that forms an outer frame of the engine-driven work machine 10, an engine 12 that is provided at the lower left front of the frame 11, and the engine 12. An operation provided in front of a generator 13 provided in the water, a water generating device 20 provided adjacent to the generator 13 and the engine 12, and a fuel tank 22 of the engine 12 and a raw water tank 41 of the water generating device 20. An engine driving generator including a panel 15.

The frame 11 includes a base 17 that supports the water purification tank 33 of the engine 12, the generator 13, and the water generator 20, a left frame 18 that is bent upward from the left end of the base 17, and a right end of the base 17. And a right frame 19 bent upward.
The engine-driven working machine 10 can be transported (carried) by manually grasping the gripping part 18 a of the left frame 18 and the gripping part 19 a of the right frame 19 and lifting the engine-driven working machine 10.

The engine 12 is supported by the front left lower portion 17 a of the base 17, and the right end portion of the crankshaft is coaxially connected to the drive shaft of the generator 13. Further, the left end portion of the crankshaft is connected to the cooling fan 23, and the cooling fan 23 is connected to the recoil starter 24.
Further, the exhaust port 28 (see FIG. 6) of the cylinder head (engine head) 25 is communicated with the evaporator 35 of the water generating device 20 via the exhaust pipe 27 (see FIG. 6). Therefore, when the engine 12 is driven, the exhaust gas is guided to the evaporator 35 of the water generator 20 through the exhaust port 28 and the exhaust pipe 27.

The cooling fan 23 is a device that cools the cylinder block and the cylinder head 25 by sending cooling air to the cylinder block and the cylinder head 25 of the engine 12. The tip of the cylinder head 25 is covered with a head cover 26.
The recoil starter 24 is a device that starts the engine 12.

  The generator 13 includes a drive shaft communicating with the crankshaft of the engine 12 and a rotor provided on the drive shaft. The rotor rotates by rotating the drive shaft with the crankshaft, and electric power is generated by rotating the rotor.

The water generator 20 is disposed in a space formed by the generator 13, the cylinder block, the cylinder head 25, and the head cover 26.
The water generation device 20 is generated by a raw water supply unit 31 that supplies raw water 29 (see FIG. 3), a water generation unit 32 that generates purified water from the raw water 29 supplied from the raw water supply unit 31, and a water generation unit 32. A purified water tank 33 for storing the purified water.
The water generator 32 is supported on the generator 13 side via a first bracket 34a and a second bracket 34b.

As shown in FIGS. 3 and 4, the water generator 32 includes an evaporator 35 that evaporates the raw water 29 supplied from the raw water supply means 31, a bottom cover 36 that covers the lower portion of the evaporator 35, and the evaporator 35. A coagulator 38 that condenses the evaporated water vapor and a separator 39 that collects (collects) purified water (distilled water) 69 generated by the coagulator 38 are included (provided).
The bottom cover 36, the evaporator 35, the aggregator 38, and the separator 39 are fastened together with a plurality of bolts 47a and a plurality of nuts 47b in a stacked state.
The water generating device 20 has a function of generating purified water by condensing the vapor evaporated by the evaporator 35 by the coagulator 38.

  The raw water supply means 31 is provided above the water generator 32 and stores a raw water tank 41 for storing raw water 29, a raw water supply passage 42 for guiding (supplying) the raw water 29 stored in the raw water tank 41 to the evaporator 35, and An air vent path 45 that communicates with the internal space 43 of the evaporator 35 (see FIG. 6) and the internal space 46 of the raw water tank 41 is provided.

As shown in FIGS. 5 and 6, the evaporator 35 includes an evaporation container 51 having an outer peripheral wall 52 formed in a substantially rectangular frame shape, and a heating section (heat exchange section) 53 housed in the evaporation container 51. It has.
In the evaporation container 51, the bottom cover 36 is attached to the lower part 51 a, so that the lower part 51 a is closed by the bottom cover 36.
A raw water storage tank 48 is formed by the evaporation container 51 and the bottom cover 36. The raw water 29 supplied from the raw water tank 41 is stored in the raw water storage tank 48.

The outer peripheral wall 52 of the evaporation container 51 is formed in a substantially rectangular (polygonal) frame shape with a first wall portion 55, a second wall portion 56, a third wall portion 57, and a fourth wall portion 58 as a plurality of wall portions. Has been.
The second wall portion 56 is continuous with one end portion 55 a of the first wall portion 55, and the third wall portion 57 is continuous with one end portion 56 a of the second wall portion 56. The fourth wall portion 58 is continuous with the one end portion 57 a of the third wall portion 57.
The third wall portion 57 is provided in parallel to the first wall portion 55 so as to face the first wall portion 55 with a predetermined interval. Further, the fourth wall portion 58 is provided in parallel to the second wall portion 56 so as to face the second wall portion 56 at a predetermined interval.

  The first wall portion 55 is integrally provided with a gas intake portion 66 of the heating portion 53. An inlet 66 a of the gas intake portion 66 is communicated with the exhaust port 28 of the engine 12 through the exhaust pipe 27. Further, the outlet 66b of the gas intake part 66 is communicated with the heating inlet 65a of the heating part 53 (heating body 65).

As shown in FIGS. 5 and 7, the first wall portion 55 is provided with a raw water intake portion 63. Specifically, the raw water intake portion 63 is provided in a portion 55 b of the first wall portion 55 adjacent to the corner portions 52 a of the first wall portion 55 and the fourth wall portion 58.
An outlet 63a of the raw water intake portion 63 is communicated with the inside (the internal space 43) of the evaporation container 51, and an outlet 42a of the raw water supply path 42 (see also FIG. 3) is communicated with the inlet 63b of the raw water intake portion 63.

Returning to FIG. 3, the inlet 42 b of the raw water supply path 42 is communicated with the raw water extraction portion 93 of the raw water tank 41. The raw water outlet 93 a has a raw water outlet 93 a communicating with the inside of the raw water tank 41. The raw water outlet 93 a is formed at the bottom 41 a of the raw water tank 41.
That is, the raw water intake section 63 is communicated with the raw water extraction section 93 via the raw water supply path 42. Therefore, the raw water 29 stored in the raw water tank 41 is supplied into the evaporator 35 through the raw water supply path 42.
The raw water tank 41 is a sealed tank.

As shown in FIGS. 5 and 7, the second wall 56 is provided with an air vent 64. Specifically, the air vent 64 is provided in a portion 56 b of the second wall 56 adjacent to the first wall 55 and the corner 52 b of the second wall 56.
The outlet 64 a of the air vent 64 is communicated with the internal space 43 of the evaporation container 51, and the outlet 45 a of the air vent 45 is communicated with the inlet 64 b of the air vent 64.

  Returning to FIG. 3, the air vent passage 45 has an inlet 45 b communicating with the internal space 46 of the raw water tank 41. In other words, the air vent 64 communicates with the internal space 46 of the raw water tank 41 through the air vent passage 45.

  As shown in FIG. 7, the third wall portion 57 is integrally provided with the gas discharge portion 67 of the heating portion 53. An inlet 67 a of the gas discharge unit 67 is communicated with a heating outlet 65 b of the heating unit 53 (heating body 65), and an outlet 67 b of the gas discharge unit 67 is opened to the outside 68 of the evaporator 35.

As shown in FIGS. 5 and 6, the first communication portion 95 is provided on the third wall portion 57. Specifically, the first communication portion 95 is formed of the second wall portion 56 and the bulging portion 57 b adjacent to the corner portion 52 c of the third wall portion 57 in the third wall portion 57.
The first communication portion 95 is a communication hole formed inside the adjacent bulging portion 57b, is provided outside the third wall portion 57, and is formed so as to extend in the vertical direction. .

  The first communication portion 95 includes a first upper opening (upper opening) 95a formed at the upper end, a first lower opening (lower opening) 95b formed at the lower end, and a first upper opening. 95a and a first communication opening 95c communicating with the first lower opening 95b.

The first upper opening 95a is opened to the outside 68 of the evaporation container 51, and is provided between the upper part 53a of the heating unit 53 and the aggregator 38 (specifically, the separator 39).
The first lower opening 95 b is opened inside the evaporation container 51 and is provided between the upper part 53 a and the lower part 53 b of the heating part 53.
Therefore, the inside of the evaporation container 51 is communicated with the outside 68 of the evaporation container 51 via the first communication portion 95.

As shown in FIGS. 5 and 8, a second communication portion 97 is provided on the fourth wall portion 58. The second communication part 97 and the first communication part 95 are similarly formed. Specifically, the second communication portion 97 is provided in the bulging portion 58 a adjacent to the third wall portion 57 and the corner portion 52 d of the fourth wall portion 58 in the fourth wall portion 58.
Similar to the first communication portion 95, the second communication portion 97 is a communication hole formed in the adjacent bulging portion 58a. The second communication portion 97 is provided outside the fourth wall portion 58 and is formed to extend in the vertical direction.

  The second communication portion 97 includes a second upper opening (upper opening) 97a formed at the upper end, a second lower opening (lower opening) 97b formed at the lower end, and a second upper opening. 97a and a second communication portion 97c communicating with the second lower opening 97b.

As shown in FIGS. 5 and 6, the second upper opening 97 a is opened to the outside 68 of the evaporation container 51, and is similar to the first upper opening 95 a of the first communication portion 95. It is provided between the upper part 53a and the aggregator 38 (specifically, the separator 39).
Similarly to the first lower opening 95b of the first communication part 95, the second lower opening 97b is opened inside the evaporation container 51 and is provided between the upper part 53a and the lower part 53b of the heating part 53. .
Therefore, the inside of the evaporation container 51 is communicated with the outside 68 of the evaporation container 51 via the second communication portion 97.

  As described above, the first upper opening 95a and the second upper opening 97a are provided between the upper portion 53a of the heating unit 53 and the aggregator 38 (specifically, the separator 39). Therefore, the raw water 29 is stored in the raw water storage tank 48 up to the height position H1 of the first upper opening 95a and the second upper opening 97a.

By storing the raw water 29 up to the position H <b> 1, the water surface (surface) 29 a of the raw water 29 can be kept above the heating unit 53 in a state where the water generating device 20 (that is, the engine-driven work machine 10) is horizontally disposed. it can.
Thereby, the raw water 29 in the raw water storage tank 48 can be efficiently evaporated by the heating unit 53.

Furthermore, when the water generator 20 is inclined by providing the first and second upper openings 95a and 97a between the heating unit 53 (upper part 53a) and the aggregator 38 (separator 39), The raw water 29 is discharged from the upper openings 95a and 97a to the outside 68.
Thereby, the raw water 29 in the raw water storage tank 48 can be prevented from entering the aggregator 38.

In addition, by providing the first communication portion 95 on the third wall portion 57 and providing the second communication portion 97 on the fourth wall portion 58, it is possible to prevent the raw water 29 from entering the aggregator 38. Therefore, unlike the prior art, it is not necessary to provide a plurality of fins inside the communication pipe (that is, the opening 88) to prevent intrusion of raw water.
Thereby, the water vapor evaporated in the evaporator 35 can be efficiently guided to the aggregator 38 through the opening 88, and a sufficient amount of the purified water 69 can be secured.
In addition, the example which discharges | emits raw water 29 when the water production | generation apparatus 20 inclines is demonstrated in detail in FIG.3, FIG.6, FIGS.9-12.

As shown in FIGS. 6 and 7, the heating unit 53 is a heat exchanger that guides exhaust gas into the evaporator 35.
The heating unit 53 includes a heating main body 65 accommodated in the evaporator 35, a gas intake unit 66 communicated with the heating inlet 65 a of the heating main body 65, and a gas discharge communicated with the heating outlet 65 b of the heating main body 65. Part 67.

The heating main body 65 has a heating inlet 65 a communicated with the gas intake part 66 (see also FIG. 5) and a heating outlet 65 b communicated with the gas discharge part 67.
The gas intake portion 66 is a flow path that communicates with the exhaust pipe 27 of the engine 12 and takes in the exhaust gas from the exhaust pipe 27.
The gas discharge part 67 is a flow path for discharging the exhaust gas taken into the heating main body 65 from the gas intake part 66 to the outside 68 of the evaporator 35.

The exhaust gas of the engine 12 is guided to the heating inlet 65a of the heating main body 65 through the exhaust pipe 27 and the gas intake portion 66, and is guided to the heating main body 65 through the heating inlet 65a.
The exhaust gas guided to the heating body 65 is guided to the gas discharge portion 67 through the heating outlet 65b of the heating body 65. The exhaust gas guided to the gas discharge unit 67 is discharged from the outlet 67 b of the gas discharge unit 67 to the outside 68 of the evaporator 35.

By introducing the exhaust gas of the engine 12 to the heating unit 53, the heating unit 53 is heated by the waste heat of the exhaust gas (waste heat of the engine 12). By heating the heating unit 53, the raw water 29 stored in the raw water storage tank 48 can be evaporated by the heating unit 53.
That is, the evaporator 35 has a function of evaporating the raw water 29 stored in the evaporation container 51 using the waste heat of the engine 12.

  The aggregator 38 includes an agglomeration container 75 having a top 76 that covers the top of the evaporation container 51, an open hole 78 provided in the agglomeration container 75, and a plurality of cooling fins 81 provided on an outer surface (upper surface) 76 a of the top 76. And a plurality of right condensing fins 82 and a plurality of left condensing fins 84 provided on the inner surface (lower surface) 76 b of the top portion 76.

The aggregation container 75 has a top portion 76 that covers the upper side of the evaporation container 51, and an outer peripheral wall 77 provided on the outer peripheral edge of the top portion 76. In the outer peripheral wall 77, an open hole 78 is provided above the third wall portion 57 of the evaporation container 51 and in the center portion (center portion in the front-rear direction) 76 c of the top portion 76.
The opening hole 78 is a hole that opens the internal space 43 of the evaporation container 51 and the internal space 86 of the aggregation container 75 (inside the aggregator 38) to the atmosphere (that is, the outside 68).

Thus, the open hole 78 is provided in the aggregator 38, and the first lower opening 95b of the first communication part 95 and the second lower opening 97b (see FIG. 5) of the second communication part 97 are further heated. 53 is provided between an upper part 53a and a lower part 53b.
Therefore, when the raw water 29 (water surface 29a) stored in the evaporator 35 is positioned below the lower portion 53b of the heating unit 53, the first lower opening 95b and the second lower opening 97b are the raw water 29 (water surface 29a). Located above.

In this state, the air heated by the heating unit 53 rises to the internal space 86 of the aggregator 38. The air that has risen up to the aggregator 38 is discharged from the opening hole 78 of the aggregator 38 to the outside 68. Therefore, natural convection is generated between the inside (inner space 43 and inner space 86) and the outside 68 of the water generation unit 32.
Thereby, the air in the outside 68 is guided to the internal space 43 of the evaporator 35 through the first communication part 95 and the second communication part 97, and the heating part 53 is cooled by the guided air.

  A plurality of cooling fins 81 are provided on the outer surface 76 a of the top portion 76 and a part of the outer peripheral wall 77. Therefore, the aggregator 38 has a large area facing the atmosphere (external 68). Thereby, heat exchange is efficiently performed by the plurality of cooling fins 81, and the aggregator 38 can be kept in a suitable cooling state.

Furthermore, among the inner surface 76b of the top portion 76, a plurality of right condensing fins 82 are provided in the right aggregation portion 76d above the evaporation vessel 51 (third wall portion 57), and the upper portion of the evaporation vessel 51 (first wall portion 55). A plurality of left condensing fins 84 are provided in the left aggregating portion 76e.
Therefore, the plurality of right condensing fins 82 and the plurality of left condensing fins 84 are kept in a suitable cooling state by the plurality of cooling fins 81.

As a result, the water vapor introduced from the evaporator 35 to the aggregator 38 is condensed by coming into contact with the plurality of right condensing fins 82 and the plurality of left condensing fins 84 and adheres to the respective condensing fins 82 and 84 as purified water 69. .
That is, the aggregator 38 is provided above the evaporator 35 and has a function of generating purified water by condensing the water vapor evaporated by the evaporator 35 at the right aggregation part 76d and the left aggregation part 76e.

The purified water generated by the aggregator 38 is collected by the separator 39.
The separator 39 is interposed between the evaporator 35 and the aggregator 38, and an opening 88 is formed at the center 39a. By forming the opening 88 in the separator 39, the water vapor evaporated by the evaporator 35 is guided to the aggregator 38 through the opening 88.

On the other hand, by interposing the separator 39 between the evaporator 35 and the aggregator 38, the purified water 69 dripped from the aggregator 38 (the plurality of right condensing fins 82 and the plurality of left condensing fins 84) is collected by the separator 39.
The purified water 69 collected by the separator 39 is stored in the purified water tank 33 (see FIG. 2). The purified water 69 stored in the purified water tank 33 is used as drinking water, for example.

Next, an example in which the raw water 29 is discharged when the water generator 20 (engine-driven work machine 10) is tilted will be described with reference to FIGS. 3, 6, and 9 to 12.
First, an example in which the water generator 32 is inclined so that the third wall 57 of the water generator 20 (water generator 32) is positioned below will be described with reference to FIG.

As shown in FIGS. 9A and 9B, the engine-driven work machine 10 (that is, the water generating unit 32) is inclined by the inclination angle θ1 so that the third wall portion 57 is positioned below. As the water generating part 32 is inclined, the raw water 29 of the first communicating part 95 is discharged to the outside 68 as shown by the arrow A through the first upper opening part 95a.
As the raw water 29 in the first communication part 95 is discharged, the raw water 29 in the raw water storage tank 48 is guided to the first communication part 95 through the first lower opening 95b as shown by the arrow B. The raw water 29 guided to the first communication part 95 is discharged to the outside 68 as indicated by an arrow A through the first upper opening 95a.

Here, the first upper opening 95a of the first communication part 95 is provided between the upper part 53a of the heating part 53 and the aggregator 38 (specifically, the separator 39).
Accordingly, the raw water 29 can be prevented from entering the aggregator 38 by discharging the raw water 29 from the first upper opening 95 a of the first communication portion 95 to the outside 68.

  Further, by discharging the raw water 29 from the first upper opening 95a of the first communication portion 95 to the outside 68, the user can visually observe the raw water 29 discharged from the first upper opening 95a to the outside 68. Thereby, the user can recognize that the engine drive work machine 10 is inclined.

Next, an example in which the water generator 32 is inclined so that the fourth wall 58 of the water generator 20 (water generator 32) is positioned below will be described with reference to FIG.
As shown in FIG. 10, the engine-driven work machine 10 (that is, the water generation unit 32) is inclined by the inclination angle θ2 so that the fourth wall portion 58 is positioned below. As the water generating part 32 is inclined, the raw water 29 (see FIG. 9A) of the second communication part 97 is discharged to the outside 68 as indicated by an arrow C through the second upper opening 97a.
As the raw water 29 in the second communication part 97 is discharged, the raw water 29 in the raw water storage tank 48 is guided to the second communication part 97 through the second lower opening 97b as indicated by an arrow D. The raw water 29 guided to the second communication part 97 is discharged to the outside 68 as indicated by an arrow C through the second upper opening 97a.

Here, the second upper opening 97a of the second communication part 97 is provided between the upper part 53a of the heating part 53 and the aggregator 38 (specifically, the separator 39) (see FIG. 9A). Yes.
Accordingly, the raw water 29 can be prevented from entering the aggregator 38 (see FIG. 9A) by discharging the raw water 29 from the second upper opening 97a of the second communication portion 97 to the outside 68.

  Further, by discharging the raw water 29 from the second upper opening 97a of the second communication portion 97 to the outside 68, the user can visually check the raw water 29 discharged from the second upper opening 97a to the outside 68. Thereby, the user can recognize that the engine drive work machine 10 is inclined.

Next, an example in which the water generating unit 32 is inclined so that the second wall portion 56 of the water generating device 20 (water generating unit 32) is positioned below will be described based on FIG. 3, FIG. 6, and FIG.
As shown in FIGS. 6 and 11, the engine-driven work machine 10 (that is, the water generating unit 32) is inclined by the inclination angle θ3 so that the second wall portion 56 is positioned below. When the water generating part 32 is inclined, the air vent part 64 (exit 64a) of the second wall part 56 is closed by the raw water 29 in the raw water storage tank 48.
By closing the outlet 64 a of the air vent 64 with the raw water 29, the air vent 64 is closed.

Here, as shown in FIG. 3, in the raw water supply means 31, the air vent 64 is communicated with the internal space 46 of the raw water tank 41 via the air vent path 45. By connecting the internal space 46 of the raw water tank 41 and the internal space 43 of the evaporator 35 through the air vent 64, the raw water 29 of the raw water tank 41 is guided into the evaporator 35.
Therefore, as shown in FIG. 11, by closing the air vent 64 with the raw water 29, the guiding of the raw water 29 in the raw water tank 41 into the evaporator 35 is stopped.

  Further, the first communication portion 95 is provided in the third wall portion 57 at the bulging portion 57 b adjacent to the second wall portion 56 and the corner portion 52 c of the third wall portion 57. Therefore, when the water generation part 32 is inclined by the inclination angle θ3 so that the second wall part 56 is positioned below, the raw water 29 can be discharged from the first upper opening 95a of the first communication part 95 to the outside 68. it can.

Thus, when the water production | generation part 32 inclines only by inclination | tilt angle (theta) 3, it stops stopping the raw | natural water 29 of the raw | natural water tank 41 in the evaporator 35, and also from the 1st upper opening part 95a of the 1st communication part 95. The raw water 29 can be discharged to the outside 68.
Thereby, the raw water 29 in the raw water storage tank 48 can be prevented from entering the aggregator 38.

Next, an example in which the water generator 32 is inclined so that the first wall 55 of the water generator 20 (water generator 32) is positioned below will be described with reference to FIG.
As shown in FIG. 12, the engine-driven work machine 10 (that is, the water generating unit 32) is inclined by the inclination angle θ4 so that the first wall portion 55 is positioned below.

Here, in the second wall portion 56, an air vent portion 64 is provided in a portion 56 b adjacent to the corner portion 52 b of the first wall portion 55 and the second wall portion 56.
Therefore, when the water generation part 32 is inclined, the air vent part 64 of the second wall part 56 can be closed with the raw water 29. Thereby, it can stop guiding the raw | natural water 29 of the raw | natural water tank 41 (refer FIG. 3) in the evaporator 35. FIG.
By stopping the introduction of the raw water 29 into the evaporator 35, the raw water 29 can be prevented from entering the aggregator 38.

As described with reference to FIGS. 9 to 12, the engine-driven work machine 10 (that is, the water generation unit 32) has four directions (all directions) so that the first to fourth wall portions 55 to 58 are positioned below. The raw water 29 can be prevented from entering the agglomerator 38 when it is inclined to the angle.
Thereby, the usability of the engine drive working machine 10 can be improved, and the quality of the product can be improved.

Next, an example in which the raw water 29 stored in the evaporator 35 has decreased below the heating unit 53 will be described with reference to FIG.
In FIG. 13, the description of the second communication portion 97 is omitted and only the first communication portion 95 is described in order to facilitate understanding of the flow of air that cools the heating portion 53.

As shown in FIG. 13, the agglomerator 38 is provided with an open hole 78, and the first lower opening 95 b of the first communication part 95 is provided between the upper part 53 a and the lower part 53 b of the heating part 53.
Therefore, when the raw water 29 (water surface 29a) stored in the evaporator 35 decreases below the lower portion 53b of the heating unit 53, the first lower opening 95b is positioned above the raw water 29 (water surface 29a).

  In this state, the air in the evaporator 35 (internal space 43) is warmed by the heating unit 53. The air heated by the heating unit 53 rises to the internal space 86 of the aggregator 38 as indicated by an arrow G. The air rising to the inner space 86 of the aggregator 38 is discharged from the opening hole 78 of the aggregator 38 to the outside 68 as indicated by an arrow H.

  Therefore, natural convection is generated between the inside (inner space 43 and inner space 86) and the outside 68 of the water generation unit 32. Thereby, the air in the outside 68 is guided to the internal space 43 of the evaporator 35 through the first communication portion 95 and the second communication portion 97 as shown by the arrow I, and the heating unit 53 can be cooled by the guided air. .

The engine-driven work machine according to the present invention is not limited to the above-described embodiments, and can be changed or improved as appropriate.
For example, in the above-described embodiment, an example in which the engine-driven work machine 10 is applied to a power generator has been described. It is also possible to apply to other working machines.

  In the above-described embodiment, the evaporation container 51 is described as being formed in a substantially rectangular frame shape with the first wall portion 55, the second wall portion 56, the third wall portion 57, and the fourth wall portion 58. However, the present invention is not limited to this, and a plurality of wall portions may be formed into other polygonal frame shapes.

  Furthermore, the engine-driven work machine, the engine, the water generator, the evaporator, the aggregator, the evaporation container, the outer peripheral wall, the heating part, the first to fourth wall parts, the raw water intake part, the air vent part, which are shown in the above embodiments. The shapes and configurations of the gas intake part, the coagulation container, the open hole, the raw water extraction part, the first and second communication parts, the first and second upper openings and the first and second lower openings are illustrated. It is not limited to a thing, It can change suitably.

  INDUSTRIAL APPLICABILITY The present invention is suitable for application to an engine-driven working machine including a water generation device that evaporates raw water with engine waste heat and condenses the evaporated water vapor to generate purified water.

  DESCRIPTION OF SYMBOLS 10 ... Engine drive work machine, 12 ... Engine, 20 ... Water production | generation apparatus, 29 ... Raw water, 35 ... Evaporator, 38 ... Coagulator, 46 ... Internal space of raw water tank, 51 ... Evaporation container, 52 ... Outer peripheral wall, 52a ... corners of first and fourth wall parts, 52b ... corners of first and second wall parts, 52c ... corner parts of second and third wall parts, 52d ... third wall part And corners of the fourth wall part, 53... Heating part, 53 a .. upper part of the heating part, 53 b .. lower part of the heating part, 55 to 58... First to fourth wall parts (plural wall parts), 55 a. One end portion of one wall portion 55, 55b ... a portion adjacent to the corner portions of the first wall portion and the fourth wall portion, 56b ... a portion adjacent to a corner portion of the first wall portion and the second wall portion, 57b ... second The bulging part adjacent to the corners of the wall part and the third wall part, 58a... The bulging part adjacent to the corner part of the third wall part and the fourth wall part, 63. Intake section, 64 ... Air vent section, 66 ... Gas intake section, 68 ... External, 69 ... Purified water, 75 ... Coagulation container, 78 ... Open hole, 86 ... Inner space of the aggregation container, 93 ... Raw water extraction section, 95, 97 ... First and second communication portions, 95a, 97a, first and second upper openings (upper openings), 95b, 97b, first and second lower openings (lower openings).

Claims (3)

A closed-type raw water tank for storing raw water, an evaporator for evaporating raw water supplied from the raw water tank with engine waste heat to form water vapor, and condensing the water vapor evaporated by the evaporator to produce purified water In an engine-driven work machine equipped with an aggregator,
The evaporator is
An evaporation container formed in a polygonal frame shape with a plurality of wall portions including a first wall portion and a second wall portion continuous with one end portion of the first wall portion;
A heating unit housed in the evaporation container and communicated with a gas intake unit of the first wall;
A raw water intake portion provided in the first wall portion and communicated with a raw water extraction portion of the raw water tank;
An air vent provided in the second wall and communicated with the internal space of the raw water tank;
Of the plurality of wall portions, a first communicating portion provided on a third wall portion facing the first wall portion;
A second communication portion provided on a fourth wall portion facing the second wall portion among the plurality of wall portions;
With
The first communication part and the second communication part are:
An upper opening that is open to the outside of the evaporation vessel and provided between the upper part of the heating unit and the aggregator;
A lower opening opened inside the evaporation container;
An engine-driven work machine comprising: The evaporation container is formed in a rectangular frame shape with the first to fourth wall portions,
The raw water intake portion is provided adjacent to corners of the first wall portion and the fourth wall portion,
The air vent is provided adjacent to a corner of the first wall and the second wall,
A first communication portion is provided adjacent to a corner portion of the second wall portion and the third wall portion,
2. The engine-driven work machine according to claim 1, wherein a second communication portion is provided adjacent to a corner portion of the third wall portion and the fourth wall portion. The aggregator
An open hole for opening the inside of the aggregator to the atmosphere;
The lower opening of the first communication part and the second communication part is
The engine-driven work machine according to claim 1, wherein the engine-driven work machine is provided between an upper part and a lower part of the heating unit.

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