JP6116435B2 - 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 steam is raised along the communication pipe to the raw water branch pipe. Purified water is generated by condensing the raised steam with the raw water in the raw water branch pipe. The produced | generated purified water is used as drinking water, for example (for example, refer patent document 1).

JP 2012-24699 A

Here, in the engine-driven working machine of Patent Document 1, the exhaust pipe for evaporating the guided raw water is formed in a meandering shape. By forming the exhaust pipe in a meandering manner, the surface area of the exhaust pipe is increased to efficiently evaporate the raw water.
However, it is difficult to increase the surface area of the exhaust pipe simply by forming the exhaust pipe in a meandering shape, and it is difficult to ensure sufficient heat dissipation of the exhaust gas led to the exhaust pipe.

  As a countermeasure, it is conceivable that a plurality of conduits are arranged in parallel, one end of each conduit is connected to the first communication pipe by welding, and the other end of each conduit is connected to the second communication pipe by welding. The exhaust gas is led from the first communication pipe to one end of each conduit, the guided exhaust gas is guided to each conduit, and the exhaust gas passing through each conduit is guided to the second communication tube to sufficiently ensure the heat dissipation of the exhaust gas. It is possible.

However, in this configuration, one end of each conduit is connected to the first communication pipe by welding in a circle, and the other end of each conduit is connected to the second communication pipe by welding in a circle. Required. For this reason, it takes time and effort for welding work (that is, assembly work).
Furthermore, since one end is welded in a circle to the first communication pipe and the other end is welded in a circle to the second communication pipe, the sealing between the one end and the first communication pipe, the other end and the second communication It is difficult to ensure the tightness between the tubes.

  It is an object of the present invention to provide an engine-driven work machine that can efficiently evaporate raw water into steam and can perform assembly work without taking time and, in addition, can easily ensure hermeticity. To do.

The invention according to claim 1 is an engine drive comprising an evaporator that evaporates raw water with waste heat of exhaust gas to form water vapor, and an aggregator that condenses the water vapor evaporated by the evaporator to produce purified water. In the working machine, the evaporator has an evaporation container formed in a frame shape on an outer peripheral wall, a gas intake part and a gas discharge part provided in the evaporation container, and is stored in the evaporation container. A heating part connected to the gas intake part and the gas discharge part, arranged in parallel with each other and having a plurality of lower fins protruding upward, and the lower heating part An upper heating unit having a plurality of upper fins alternately projecting downward with respect to the plurality of lower fins of the heating unit, and the upper heating unit is superimposed on the lower heating unit from above By joining together, the above Lower fins and the plurality of upper fins number is alternately combined flow path of the exhaust gas is formed between the lower fins and the upper fin, dividable interposed between the evaporator and the condenser, A separator that collects purified water generated by the aggregator, and a bottom cover that is severably provided at a lower part of the evaporator and forms a container that stores the raw water together with the evaporator, the bottom cover, the evaporation vessel, the separator and the agglomerator is characterized Rukoto is dividable laminated in this order.

Here, the evaporator is preferably formed of a material having excellent thermal conductivity (for example, aluminum material) in consideration of heat dissipation. The aggregator is preferably formed of a material having excellent thermal conductivity (for example, aluminum material) in consideration of cooling properties.
On the other hand, the bottom cover and the separator are preferably formed of a light-weight and low-cost material (for example, resin) that is excellent in heat insulation.

Further, the bottom cover, the evaporator, the separator, and the aggregator have different durability. For example, the evaporator is a part used at a relatively high temperature, and the bottom cover, the separator, and the aggregator are excellent in durability as compared with the evaporator.
Therefore, it is preferable that the bottom cover, the evaporator, the separator, and the aggregator can be individually replaced.

Accordingly, Bo Tomukaba, evaporators, a separator and agglomerator was configured to dividable laminated in this order.

According to the first aspect of the present invention, the exhaust gas flow path is formed between the lower fin and the upper fin by integrally joining the lower heating portion with the upper heating portion superimposed from above.
Thus, the heating part can be formed by a simple operation of simply joining the upper heating part to the lower heating part. Thereby, the assembly | attachment operation | work of a heating part can be performed without an effort, and in addition, the sealing property (namely, sealing property of a heating part) between a lower heating part and an upper heating part can be ensured easily.

Furthermore, by forming an exhaust gas flow path between the lower fin and the upper fin, a plurality of flow paths can be formed, and a large surface area of the flow path can be secured. Therefore, by guiding the exhaust gas to the plurality of flow paths, it is possible to sufficiently ensure the heat dissipation of the exhaust gas (waste heat).
Thereby, the raw water of an evaporator can be efficiently evaporated with the waste heat of exhaust gas, and can be made into water vapor.

Moreover , the bottom cover, the evaporator, the separator, and the aggregator were laminated so as to be divided. Therefore, the evaporator and the aggregator can be formed of a material having excellent thermal conductivity (for example, an aluminum material). In addition, the bottom cover and the separator can be formed of a light-weight and low-cost material (for example, resin) that is excellent in heat insulation.
Thereby, the heat loss of an engine drive working machine can be suppressed, and weight reduction and cost reduction can be achieved.

Furthermore, the bottom cover, the evaporator, the separator, and the aggregator can be divided and stacked so that the bottom cover, the evaporator, the separator, and the aggregator can be individually replaced.
Furthermore, by preparing various specifications for the bottom cover, the evaporator, the separator, and the aggregator individually, the combination of each member can be changed according to the use of the engine-driven work machine. Thereby, the specification corresponding to the use of the engine-driven work machine can be easily configured.

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 a sectional view taken along line 5-5 of FIG. FIG. 6 is a sectional view taken along line 6-6 of FIG. It is a top view which shows the evaporator of FIG. It is a sectional view taken on the line 8-8 in FIG. 7 and showing a state where the exhaust pipe is removed. It is sectional drawing which shows the state which decomposed | disassembled the evaporator of FIG. FIG. 10 is a sectional view taken along line 10-10 in FIG. 8. It is a top view which shows the state which looked at the lower heating part of FIG. 9 from upper direction. It is a bottom view which shows the state which looked at the lower heating part of FIG. 9 from the downward direction. It is a top view which shows the state which looked at the upper heating part of FIG. 9 from upper direction. It is a bottom view which shows the state which looked at the upper heating part of FIG. 9 from the downward direction. It is a figure explaining the example which shape | molds the lower heating part of FIG. It is a figure explaining the example which shape | molds the upper heating part of FIG. It is a figure explaining the example which produces | generates purified water from raw | natural water in the water production | generation part which concerns on this invention.

  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. 5) 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. 5). 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 (see FIG. 5) generated by the coagulator 38 are included (provided).
The evaporator 35, the bottom cover 36, the aggregator 38, and the separator 39 are fastened in a stacked state so as to be divided by a plurality of bolts 47a and a plurality of nuts 47b.
That is, the water generator 20 has a function of generating purified water by condensing the vapor evaporated by the evaporator 35 by the aggregator 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 passage 45 that communicates the internal space 43 (see FIG. 5) of the evaporator 35 and the internal space 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 unit (heat exchange unit) 53 provided in the evaporation container 51. It has.
The evaporation container 51 is provided with a bottom cover 36 that can be divided at 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 (that is, a container for storing raw water) 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.

  A gas intake portion 66 of the heating unit 53 is integrally provided in the evaporation container 51 (outer peripheral wall 52). 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).

Moreover, the raw | natural water intake part 63 and the air vent part 64 are provided in the evaporation container 51 (outer peripheral wall 52). In the raw water intake part 63 and the air vent part 64, the outlets 63 a and 64 a communicate with the inside of the evaporation container 51.
An outlet 42 a of the raw water supply path 42 is connected to the inlet 63 b of the raw water intake portion 63. An outlet 45 a of the air vent path 45 is communicated with the inlet 64 b of the air vent 64.

  Furthermore, the gas discharge part 67 of the heating part 53 is integrally provided in the evaporation container 51 (outer peripheral wall 52). 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.

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 communicating with the gas intake part 66 and a heating outlet 65 b communicating with the gas discharge part 67. Therefore, 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 configuration of the heating unit 53 will be described in detail with reference to FIGS.

The aggregator 38 is provided on the agglomeration container 75 having a top portion 76 that covers the top of the evaporation vessel 51, a plurality of cooling fins 81 provided on the outer surface (upper surface) 76a of the top portion 76, and the inner surface (lower surface) 76b of the top portion 76. The plurality of right condensing fins 82 and the plurality of left condensing fins 84 are included.
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.

The top portion 76 is formed in a mountain shape (inverted V shape) so that the central portion 76c protrudes upward.
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.

Further, among the inner surface 76 b of the top portion 76, a plurality of right condensing fins 82 are provided in the right condensing portion 76 d above the evaporation container 51, and a plurality of left condensing fins 84 are provided in the left condensing portion 76 e above the evaporation container 51. It has been.
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 condensing part 76d and the left condensing part 76e.

The purified water generated by the aggregator 38 is collected by the separator 39.
The separator 39 is detachably interposed between the evaporator 35 and the aggregator 38, and an opening 88 is formed in 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) through the purified water extraction part 89 and the purified water extraction path. The purified water 69 stored in the purified water tank 33 is used as drinking water, for example.

Next, the configuration of the heating unit 53 will be described in detail with reference to FIGS.
As shown in FIGS. 7 and 8, the heating main body 65 includes a lower heating unit 95 connected to the gas intake unit 66 and the gas discharge unit 67, and an upper heating unit 96 superimposed on the lower heating unit 95 from above. I have.
In a state where the upper heating unit 96 is superimposed on the lower heating unit 95 from above, the lower heating unit 95 and the upper heating unit 96 are joined to form the heating main body 65 integrally.

  As shown in FIGS. 9 and 10, the lower heating unit 95 includes a heating bottom portion 97 connected to the gas intake portion 66 and the gas discharge portion 67, and a plurality of lower outer fins 98 provided on the lower surface 97 a of the heating bottom portion 97. And a plurality of lower inner fins (lower fins) 99 provided on the upper surface 97 b of the heating bottom 97.

  As shown in FIGS. 10 and 11, the heating bottom portion 97 includes a plate-like lower inclined portion 102 whose outer shape is formed in a substantially rectangular shape in plan view, and a lower standing wall 103 raised from the outer periphery 102 a of the lower inclined portion 102. And a projecting portion 104 projecting outward from the upper end 103a of the lower wall 103.

Returning to FIG. 9, the gas intake portion 66 is provided above the gas discharge portion 67 by H1. A left end portion 102 b of the lower inclined portion 102 is connected to the gas intake portion 66, and a right end portion 102 c of the lower inclined portion 102 is connected to the gas discharge portion 67.
Therefore, the lower inclined portion 102 is disposed at a position where the left end portion 102b is higher than the right end portion 102c, and is formed in an ascending gradient with an inclination angle θ1 from the right end portion 102c toward the left end portion 102b.

As shown in FIGS. 9 and 12, the plurality of lower and outer fins 98 project downward from the lower surface 97 a of the heating bottom 97. The plurality of lower and outer fins 98 are arranged in parallel with each other at a predetermined interval in the front-rear direction and extend in the left-right direction.
Accordingly, a gap S1 is formed between adjacent lower outer fins 98. Thereby, the raw | natural water 29 (refer FIG. 5) can move the space | gap S1 in the left-right direction.

As shown in FIGS. 9 and 11, the plurality of lower inner fins 99 project upward from the upper surface 97 b of the heating bottom 97. The plurality of lower inner fins 99 are arranged in parallel with each other at a predetermined interval in the front-rear direction and extend in the left-right direction.
That is, the plurality of lower inner fins 99 extend in parallel to the plurality of lower outer fins 98. Therefore, a space S <b> 2 is formed between adjacent lower inner fins 99. Thereby, the exhaust gas can be moved along the gap S2.

  As shown in FIGS. 9 and 10, the upper heating unit 96 includes a heating top portion 107 disposed so as to face the heating bottom portion 97 and a plurality of upper and outer fins 108 provided on the upper surface 107 a of the heating top portion 107. And a plurality of upper inner fins (upper fins) 109 provided on the lower surface 107 b of the heating top portion 107.

  As shown in FIGS. 9 and 13, the heating top portion 107 includes a plate-like upper inclined portion 112 whose outer shape is formed in a substantially rectangular shape in plan view, and an upper portion protruding downward from the outer side of the upper inclined portion 112. It has the standing wall 113 and the recessed part 114 formed in the site | part facing the gas intake part 66. FIG.

  The upper inclined portion 112 is formed in a substantially rectangular shape in plan view, like the outer shape of the heating bottom portion 97 (the overhang portion 104). Similar to the lower inclined portion 102, the upper inclined portion 112 is formed in an upward gradient with an inclination angle θ1 from the right end portion 112b toward the left end portion 112a.

As shown in FIGS. 9 and 14, the plurality of upper and outer fins 108 project upward from the upper surface 107 a of the heating top portion 107. The plurality of upper and outer fins 108 are arranged in parallel with each other at a predetermined interval in the front-rear direction and extend in the left-right direction.
Accordingly, a gap S3 is formed between the adjacent upper and outer fins 108. Thereby, the raw water 29 (refer FIG. 5) of the space | gap S3 can move to the left-right direction.

Returning to FIGS. 9 and 13, the plurality of upper inner fins 109 project alternately downward from the lower surface 107 b of the heating top 107 to the plurality of lower inner fins 99. The plurality of upper and inner fins 109 are arranged in parallel with each other at a predetermined interval in the front-rear direction and extend in the left-right direction.
That is, the plurality of upper and inner fins 109 extend in parallel to the plurality of upper and outer fins 108. Therefore, a gap S4 is formed between the adjacent upper inner fins 109. Thereby, the exhaust gas can be moved along the gap S4.

As shown in FIGS. 8 and 10, the upper heating portion 96 is superimposed on the heating bottom portion 97 from above, so that the lower end portion 113a of the upper heating portion 96 (upper standing wall 113) becomes the lower heating portion 95 (the overhang portion 104). ).
Further, the concave portion 114 of the upper heating portion 96 abuts on the outlet end upper portion 66 c of the gas intake portion 66. Further, the upper vertical wall 113 of the upper heating unit 96 contacts the inlet end upper portion 67 c of the gas discharge unit 67.

In this state, the upper surface 97b of the heating bottom portion 97 and the lower surface 107b of the heating top portion 107 are disposed so as to face each other with a predetermined distance H2.
The lower end portion 113 a of the upright wall 113 is joined to the upper surface of the overhang portion 104, and the concave portion 114 is joined to the outlet end upper portion 66 c of the gas intake portion 66. Further, the upper vertical wall 113 of the upper heating part 96 is joined to the inlet end upper part 67 c of the gas discharge part 67.
Therefore, the upper heating part 96 and the heating bottom part 97 are joined together, and the lower heating part 95 and the upper heating part 96 form a sealed space.

Further, the lower heating unit 95 and the upper heating unit 96 are joined together to form a heating main body 65 (that is, the heating unit 53) by the lower heating unit 95 and the upper heating unit 96.
In this state, the plurality of lower inner fins 99 and the plurality of upper inner fins 109 are alternately combined to form a gas flow path (exhaust gas flow path) 116 inside the heating body 65.
The gas channel 116 is formed by a first gas channel 117, a second gas channel 118, and a third gas channel 119.

The first gas flow path 117 is formed between adjacent lower inner fins 99 and upper inner fins 109.
The second gas flow path 118 is formed between the upper end portion 99 a of the lower inner fin 99 and the lower surface 107 b of the heating top portion 107. An upper end portion 99 a of the lower inner fin 99 is disposed below the lower surface 107 b of the heating top portion 107.
In the third gas flow path 119, the third gas flow path 119 is formed between the lower end portion 109 a of the upper inner fin 109 and the upper surface 97 b of the heating bottom portion 97. The lower end portion 109 a of the upper inner fin 109 is disposed above the upper surface 97 b of the heating bottom portion 97.

As described above, the upper heating unit 96 is integrally joined to the lower heating unit 95 in a state where the upper heating unit 96 is overlapped from above, so that the inside of the heating main body 65 (that is, between the adjacent lower inner fin 99 and upper inner fin 109). A gas flow path 116 is formed.
Therefore, the heating main body 65 (that is, the heating unit 53) can be formed by a simple operation of simply joining the upper heating unit 96 to the lower heating unit 95.
Thereby, the assembly work of the heating unit 53 can be performed without taking time, and in addition, the sealing property between the lower heating unit 95 and the upper heating unit 96 (that is, the sealing property of the heating unit 53) is easily performed. It can be secured.

Further, the lower heating unit 95 includes a plurality of lower inner fins 99, the upper heating unit 96 includes a plurality of upper inner fins 109, and a gas flow path 116 is formed between the adjacent lower inner fins 99 and upper inner fins 109. I did it. Therefore, a plurality of gas flow paths 116 can be formed in the heating body 65, and a large surface area of the gas flow paths 116 can be secured.
Thereby, by guiding the exhaust gas to the plurality of gas flow paths 116, the heat dissipation of the exhaust gas (waste heat) can be sufficiently ensured, and the raw water 29 (see FIG. 5) in the raw water storage tank 48 is discarded. It can be efficiently evaporated with heat to form water vapor.

Next, an example of forming the lower heating unit 95 will be described with reference to FIG.
As shown in FIG. 15, the cavity 126 is formed by clamping the mold 125 (the fixed mold 127, the movable mold 128, the first slide mold 129, and the second slide mold 131). The evaporation vessel 51, the lower heating unit 95, the gas intake unit 66, and the gas discharge unit 67 are formed in the cavity 126 with a molten aluminum alloy.

After the evaporation container 51, the lower heating unit 95, the gas intake unit 66, and the gas discharge unit 67 are formed in the cavity 126, the movable mold 128 is opened in the arrow A direction.
Further, the first slide mold 129 is moved in the arrow B direction, and the second slide mold 131 is moved in the arrow C direction.
Accordingly, the lower heating unit 95 (including the evaporation container 51, the gas intake unit 66, and the gas discharge unit 67) can be easily formed integrally.

Next, an example of forming the upper heating unit 96 will be described with reference to FIG.
As shown in FIG. 16, the cavity 136 is formed by clamping the forming die 135 (the fixed die 137 and the movable die 138). The upper heating part 96 is formed in the cavity 136 with a molten aluminum alloy.
After the upper heating part 96 is formed in the cavity 136, the movable mold 138 is opened in the direction of arrow D. Thereby, the upper heating part 96 can be easily formed integrally.

Next, an example of generating the purified water 69 from the raw water 29 by the water generator 20 will be described with reference to FIG.
As shown in FIG. 17, the exhaust gas of the engine 12 is guided to the heating unit 53 as indicated by an arrow E through the exhaust pipe 27 and the gas intake unit 66. The exhaust gas guided to the heating unit 53 is discharged as indicated by an arrow F to the outside 68 of the evaporator 35 through the gas discharge unit 67.

  By introducing the exhaust gas of the engine 12 to the heating unit 53, the heating unit 53 (heating body 65) is heated by the waste heat of the exhaust gas (waste heat of the engine 12). When the heating main body 65 is heated, heat exchange is performed with the raw water 29 stored in the raw water storage tank 48, and the raw water 29 is evaporated to generate water vapor.

The water vapor of the raw water 29 is guided through the opening 88 of the separator 39 to the right condensing fin 82 in the right condensing portion 76d and the left condensing fin 84 in the left condensing portion 76e as indicated by an arrow G.
The right condensing fins 82 and the left condensing fins 84 are kept in a suitable cooling state by the cooling fins 81. Therefore, the water vapor introduced to the right condensation fin 82 and the left condensation fin 84 is cooled by the respective condensation fins 82 and 84 and adheres to the right condensation fin 82 and the left condensation fin 84 as the purified water 69.

Returning to FIG. 4, the evaporator 35 is a part that exchanges heat with the raw water 29 stored in the raw water storage tank 48 when the heating unit 53 is heated by the waste heat of the exhaust gas. Therefore, the evaporator 35 is preferably formed of a material having excellent thermal conductivity (for example, an aluminum material) in consideration of heat dissipation.
The aggregator 38 is a part that generates purified water by condensing the water vapor generated by the evaporator 35. Therefore, the aggregator 38 is preferably formed of a material having excellent thermal conductivity (for example, an aluminum material) in consideration of cooling properties.

On the other hand, the bottom cover 36 is a member that closes the lower portion 51a of the evaporator 35 (evaporation container 51). The separator 39 is a member interposed between the evaporator 35 and the aggregator 38.
Therefore, the bottom cover 36 and the separator 39 are required to have excellent heat insulation properties, and are further required to be formed of a light-weight and low-cost material (for example, resin).

Further, the bottom cover 36, the evaporator 35, the separator 39, and the aggregator 38 have different durability. For example, the evaporator 35 is a part used at a relatively high temperature. Therefore, the bottom cover 36, the separator 39, and the aggregator 38 are more durable than the evaporator 35.
For this reason, it is preferable to comprise so that the bottom cover 36, the evaporator 35, the separator 39, and the aggregator 38 can be replaced | exchanged separately.

Therefore, the bottom cover 36, the evaporator 35, the separator 39, and the aggregator 38 can be stacked from below in this order, and can be fastened with a plurality of bolts 47a and a plurality of nuts 47b in the stacked state.
That is, the bottom cover 36, the evaporator 35, the separator 39, and the aggregator 38 can be assembled so as to be split.

Therefore, the evaporator 35 and the aggregator 38 can be formed of a material having excellent thermal conductivity (for example, an aluminum material). Further, the bottom cover 36 and the separator 39 can be formed of a material (for example, resin) that is excellent in heat insulation, lightweight, and low cost.
Thereby, the heat loss of the engine drive working machine 10 can be suppressed, and weight reduction and cost reduction can be achieved.

Further, the bottom cover 36, the evaporator 35, the separator 39, and the aggregator 38 are laminated so as to be split, so that the bottom cover 36, the evaporator 35, the separator 39, and the aggregator 38 can be individually replaced.
Further, by preparing various specifications for the bottom cover 36, the evaporator 35, the separator 39, and the aggregator 38 individually, the members 36, 35, The combination of 39 and 38 can be changed.
Thereby, the specification corresponding to the use of the engine drive working machine 10 can be easily configured.

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 addition, the engine-driven work machine, the engine, the water generator, the evaporator, the bottom cover, the aggregator, the separator, the raw water storage tank, the evaporation container, the outer peripheral wall of the evaporation container, the heating unit, the heating main body, and the gas shown in the above embodiment The shapes and configurations of the intake portion, the lower heating portion, the upper heating portion, the lower inner fin, the upper inner fin, the gas flow path, and the like are not limited to those illustrated, and can be changed as appropriate.

  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, 36 ... Bottom cover, 38 ... Coagulator, 39 ... Separator, 48 ... Raw water storage tank (container for raw water) ), 51... Evaporation container, 52. Peripheral wall of the evaporation container, 53... Heating part, 65... Heating body, 66. , 99 ... lower inner fin (lower fin), 109 ... upper inner fin (upper fin), 116 ... gas flow path (exhaust gas flow path).

Claims (1)

In an engine-driven working machine comprising an evaporator that evaporates raw water with waste heat of exhaust gas to form water vapor, and a coagulator that condenses water vapor evaporated by the evaporator to produce purified water,
The evaporator is
An evaporation container formed in a frame shape on the outer peripheral wall;
A heating section that has a gas intake section and a gas discharge section provided in the evaporation container, and is housed in the evaporation container;
The heating part
A lower heating unit that is connected to the gas intake unit and the gas discharge unit and has a plurality of lower fins that are arranged in parallel and project upward;
An upper heating section having a plurality of upper fins alternately projecting downward with respect to the plurality of lower fins of the lower heating section,
The plurality of lower fins and the plurality of upper fins are alternately combined with the lower heating unit in a state in which the upper heating unit is overlapped from above, and between the lower fin and the upper fin. The exhaust gas flow path is formed ,
A separator that is detachably interposed between the evaporator and the coagulator, and collects purified water generated by the coagulator;
A bottom cover that is severably provided at a lower part of the evaporator and forms a container for storing the raw water together with the evaporator;
The bottom cover, the evaporator, the engine driving the working machine, wherein the separator and the agglomerator is characterized Rukoto is dividable laminated in this order.

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