JP5148172B2 - Separator for exhaust gas condensed water of engine and exhaust passage device having the same - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a separator for exhaust gas condensed water provided in an exhaust passage of an engine and separating and discharging condensed water generated by expansion or cooling of exhaust gas from an exhaust passage, and an exhaust passage device including the separator. It is.

  There are known generators powered by gas engines that use city gas, etc., and cogeneration devices that use hot heat from the gas engine as a hot water supply system. The exhaust used in this type of gas engine In the heat exchanger, the exhaust is cooled, so that the exhaust is condensed and condensate is likely to be generated. Also, when the cogeneration device is used for private power generation for home use, etc. The exhaust silencer is provided, and in the silencer, the exhaust gas expands in the chamber, so that the temperature is lowered and moisture in the exhaust gas is condensed to easily generate condensed water.

  As described above, in an engine as a power source for a cogeneration system or a stationary generator, exhaust condensate tends to be generated due to the configuration of the exhaust system, and if the exhaust condensate is not properly separated and discharged, The condensed water blown off from the mouth generates noise, and water adheres to the vicinity of the exhaust port, which is not suitable as a private power generation facility. Further, when used in cold regions, the condensed water freezes and adheres near the exhaust port. There is also a fear. For this reason, it is necessary to provide a separation device that efficiently separates and discharges only the exhaust condensed water from the exhaust gas.

  An apparatus for separating exhaust condensed water in this type of cogeneration apparatus is disclosed in, for example, Patent Document 1 (Japanese Patent Laid-Open No. 2001-132441), and is discharged from an exhaust heat exchanger as shown in FIG. The mixed exhaust gas in which the condensed water is mixed with the exhaust gas is introduced into the inlet end 03 of the curved pipe portion 02 connected to the separation chamber 01. The mixed exhaust gas introduced into the inlet end 03 is blown upward in the push-up passage 04 and guided to the first expansion chamber 05. Thereafter, the mixed exhaust gas guided to the first expansion chamber 05 is While being separated into condensed water and exhaust gas, it further descends to the second expansion chamber 06 and reaches the inlet 07 on the side wall portion at the bottom of the separation chamber 01.

The exhaust gas and the condensed water that have reached the inlet 07 are separated so that the exhaust gas is discharged upward from the exhaust outlet 08 at the upper end, and the condensed water is discharged from the lower condensed water outlet 09. Discharged.
JP 2001-132441 A

As described above, in the structure of the separation chamber 01 shown in Patent Document 1, the exhaust gas and condensed water entering the separation chamber 01 from the inlet 07 first hit the wall surface of the separation chamber 01 perpendicularly, and the exhaust gas is 90%. It changes in the direction and rises almost linearly toward the exhaust outlet 08. At this time, since the exhaust outlet 08 is disposed almost linearly above the condensed water discharge port 09, the condensed water scattered perpendicularly to the wall surface or the condensed water accumulated in the condensed water discharge port 09 portion is the exhaust gas. It is easy to blow through toward the exhaust outlet 08 together with the upward flow.
Further, since the condensed water outlet 09 provided at the bottom of the separation chamber 01 faces directly from the inlet 07 in the traveling direction of the exhaust gas, dynamic pressure is applied, and the condensed gas is discharged from the condensed water outlet 09 together with the condensed water. Since the part is easy to blow through, a drain trap is required and the structure becomes complicated.
Furthermore, since the exhaust outlet 08 is disposed at a substantially linear upper position from the condensed water outlet 09, the condensed water condensed on the wall surface of the separation chamber 01 or the condensed water scattered perpendicularly to the wall surface of the separation chamber 01 is While falling downward due to gravity, there is also a problem that abnormal noise such as popping is generated by being danced in the separation chamber 01 by exhaust gas moving upward, and the abnormal noise is easily discharged to the outside. Yes.

  Therefore, the present invention has been made in view of such a background, and the condensed water is efficiently separated and discharged from the exhaust gas of the engine, and the blown-through amount in which the separated condensed water is discharged together with the exhaust gas from the exhaust outlet. In addition, the present invention aims to provide a condensate separator that can reduce the leakage of exhaust noise, and further to the exhaust passage provided with an expansion chamber and an exhaust heat exchanger in which exhaust condensate easily occurs. An object of the present invention is to provide an exhaust passage device that reduces the amount of blown-through condensed water discharged together with the exhaust gas and the exhaust of exhaust sound by providing a separator.

In order to solve the above-mentioned problem, an invention related to a separator for exhaust gas condensed water of an engine according to claim 1,
In the exhaust gas condensed water separator for the engine, which is provided in the exhaust passage of the engine and separates and discharges the condensed water generated by the expansion or cooling of the exhaust gas from the exhaust path.
The separator includes an inlet portion into which mixed exhaust gas mixed with condensed water flows, an exhaust outlet portion that discharges exhaust gas from which condensed water is separated from the mixed exhaust gas, and condensed water discharge that discharges condensed water. Consisting of a container having a substantially rectangular shape with each part formed on the wall surface,
It is divided into an inlet side space chamber in which the inlet portion is disposed and an outlet side space chamber in which the exhaust outlet portion is disposed by a projecting wall projecting from one side wall in the container so as to face the inlet portion. A passage from the inlet part to the exhaust outlet part via a space ahead of the tip of the projection wall is formed in a crank shape, and is lowered by one step from the attachment position of the inlet part of the inlet side space chamber by an inclined surface. A condensate pool is formed at the position where the condensate drain is disposed on the bottom of the condensate pool,
The inlet portion is installed so as to allow the mixed exhaust gas to flow into the container from the bottom to the top, and the condensed water is further lowered to a space position ahead of the tip of the protruding wall that is lowered by one slope from the attachment position of the inlet portion. A pool portion is formed, and the condensed water discharge portion is formed on the bottom surface of the condensed water pool portion formed below the position where the inlet portion is disposed,
Further, the container and the protruding wall are integrally formed of resin, the inlet and the condensed water discharger are formed on the lower surface of the container, the exhaust outlet is formed on the upper surface of the container, and between the container inlet and the exhaust outlet. Is provided with a protruding wall projecting from one side wall in the container, and the inlet portion and the exhaust outlet portion are disposed at positions facing each other across the protruding wall, and the exhaust outlet portion The condensate discharge part is provided with a position shifted in the horizontal direction.

According to this invention, the container is divided into the inlet-side space chamber in which the inlet portion is arranged and the outlet-side space chamber in which the exhaust outlet portion is arranged by the protruding wall protruding in the container so as to face the inlet portion. In order to form a passage from the inlet portion to the exhaust outlet portion in a crank shape, the mixed exhaust gas mixed with the condensed water flowing in from the inlet portion first collides with the projecting wall in the direction of 90 °. Can be changed. Separation of the exhaust gas and the condensed water is promoted by the collision with the protruding wall, and further, the passage of the crank shape causes the expansion of the mixed exhaust gas and the collision with the container wall surface to reach the exhaust outlet. Separation of exhaust gas and condensed water is promoted.
In addition, since the condensed water discharge portion is disposed at the lowermost portion of the inlet side space chamber, the exhaust outlet portion and the condensed water discharge portion are installed in separate space chambers separated by protruding walls. Therefore, it is difficult for the condensed water accumulated in the vicinity of the condensed water discharge part to blow out toward the exhaust outlet part along with the flow of the exhaust gas, and the blow-through amount and exhaust sound of the condensed water discharged together with the exhaust gas from the exhaust outlet part. Can be reduced.
Further, the mixed exhaust gas mixed with the condensed water flowing in from the inlet portion is guided to the condensed water discharge portion after colliding with the protruding wall, so that it is difficult to apply dynamic pressure, and the separated exhaust gas is discharged from the condensed water outlet. The amount of blow-through discharged together with the condensed water can be reduced.

Further, the present invention is the entering opening is disposed so as to flow into the mixed exhaust gas from the bottom upwards in the container, condensed water the condensate drain portion is formed below the position of the inlet portion It is formed in the bottom face of a reservoir part.

According to the invention that written inlet portion is installed so as to flow the mixed exhaust gas from the bottom upwards into the container, yet the condensate discharge unit condensate formed below the position of the inlet portion Since it forms in the bottom face of a reservoir part, since the direction of the mixed exhaust gas which flows in from an inlet part does not face the condensed water reservoir part, it is difficult for condensed water to be conveyed by the exhaust gas which flows in.
Furthermore, the condensate pool is formed below the position where the inlet is located, and the condensate drain is formed on the bottom of the condensate pool, so the flow of the crank-shaped passage from the inlet to the exhaust outlet Since the condensed water accumulates at a position that is not easily influenced by the exhaust gas, it is reduced that the condensed water is carried to the exhaust outlet portion along with the flow of the exhaust gas.

Further, the invention according to claim 2, in the invention according to the first aspect, wherein the projection wall is formed to extend from the side wall to partition 1/2 to 2/3 between the side wall of the container Features.

According to the invention of such a second aspect, the length that is partitioned by the projection walls is 1 / 2-2 / 3 of the side walls of the container, the remaining 1 / 3-1 / 2 the outlet side space compartment And an entrance-side space chamber are formed to form communication holes.
Accordingly, the projection wall is provided so as to partition the inside of the container up and down, but the portion of the communication hole formed by the tip portion and the side wall surface of the projection wall restricts the exhaust gas flow flowing from the inlet portion toward the exhaust outlet portion. In such a case, the stirring action of the condensed water due to the increase in the flow rate of the exhaust gas in the container does not occur, so that the condensed water is prevented from being discharged together with the exhaust gas in the form of droplets.

The invention of claim 1 wherein the container and the projection wall of the substantially rectangular shape is integrally molded with resin, the inlet and condensate drain portion is provided on the container bottom surface, the exhaust into the container top An outlet portion is provided, the inlet portion and the exhaust outlet portion are disposed at positions facing each other with the projection wall interposed therebetween, and the exhaust outlet portion and the condensed water discharge portion are disposed with their positions shifted in the horizontal direction. It is characterized by that.

According to the first aspect of the present invention, since the separator is integrally formed of resin, the inlet portion and the condensed water discharge portion are provided on the lower surface, the exhaust outlet portion is provided on the upper surface, and the inlet portion and the A separator in which the exhaust outlet portion is arranged at a position facing the projecting wall with the projection wall interposed therebetween, and the exhaust outlet portion and the condensed water discharge portion are arranged so as to be displaced in the horizontal direction is easily manufactured. Can do.
Further, the inlet portion and the exhaust outlet portion are disposed at positions facing each other across a protruding wall protruding from one side wall in the container, and the exhaust outlet portion and the condensed water discharge portion are in a horizontal direction. Since the condensed water collected in the vicinity of the condensed water discharge part is not easily blown out toward the exhaust outlet part along with the flow of the exhaust gas, the amount of condensed water discharged from the exhaust outlet together with the exhaust gas is difficult to blow through. Further, it is possible to reduce the blow-by sound.

Further, the invention described in claim 3 relates to an exhaust passage device for an engine, and the invention relates to the exhaust gas condensate water separator according to claim 1 or 2 provided on the exhaust passage. In addition, a plurality of silencers including an expansion chamber are provided on the upstream side of the exhaust passage of the separator, and an engine exhaust heat exchanger is installed on the upstream side of the silencer.

According to the third aspect of the present invention, by providing the separator in an exhaust passage provided with a silencer and an exhaust heat exchanger that generate a large amount of exhaust condensate, the blow-through amount of exhausted condensate and the exhaust It is possible to obtain an exhaust passage device that reduces sound blow-through.

  According to the present invention, it is possible to efficiently separate and discharge condensed water from the exhaust gas of the engine, to reduce the amount of condensed water blown out from the exhaust outlet together with the exhaust gas, and to reduce exhaust noise leakage. A condensate separator can be obtained, and further, the condensate discharged together with the exhaust gas is provided by providing the separator in an exhaust passage provided with an expansion chamber and an exhaust heat exchanger where a large amount of exhaust condensate is generated. It is possible to obtain an exhaust passage device that reduces the blow-by amount and exhaust sound blow-through.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified, but are merely illustrative examples. Only.

  In the drawings to be referred to, FIG. 1 is an overall configuration diagram showing an exhaust passage device provided with a separator for exhaust gas condensed water of an engine according to an embodiment of the present invention. FIG. 2 is a partial front sectional view of an exhaust gas condensate water separator for an engine according to an embodiment of the present invention. 3 is a cross-sectional view taken along line AA in FIG. FIG. 4 is a side view of FIG. 5 is a plan view and FIG. 6 is a bottom view. FIG. 7 shows a modification of the separator.

FIG. 1 shows an exhaust passage device 3 provided with a separator 1 for exhaust gas condensed water of an engine according to an embodiment of the present invention, and shows an example applied to a cogeneration device using exhaust heat of the engine. Although not shown, this cogeneration apparatus includes a generator driven by an engine. An exhaust heat exchanger 5 is provided to collect exhaust heat of the exhaust gas and supply it to a heat load such as an external boiler unit.
This exhaust heat exchanger 5 is installed at a position close to the exhaust outlet of the engine in order to use high-temperature exhaust gas, and introduces a heat medium such as water to exchange heat with the exhaust gas inside the exhaust heat exchanger 5. A heat medium outlet 7 for circulating the heat medium to a heat load such as a heat medium inlet 7 and a boiler unit is provided.

  The exhaust gas from the engine is deprived of heat in the exhaust heat exchanger 5 and cooled, and moisture in the exhaust gas is condensed to generate condensed water. In the normal operation state, the condensed water is generated by the momentum of the exhaust gas. The condensed water is blown off downstream, and almost no condensed water remains in the exhaust passage in the vicinity of the exhaust heat exchanger 5.

The first silencer 15 is connected to the downstream side of the exhaust heat exchanger 5 via the outlet hose 11 of the exhaust heat exchanger 5, the connecting pipe 13, and the inlet hose 17 of the first silencer 15. It is guided to the first silencer 15 through the exhaust heat exchanger 5.
The first silencer 15 includes a first chamber 19 disposed in the upper portion, a second chamber 21 disposed in the middle portion, and a third chamber 23 disposed in the lower portion.

  The first chamber 19 is a box-shaped chamber. The inlet hose 17 is connected to one end surface side, and is connected to one end portion side of a second chamber 21 having a cylindrical shape from the lower portion on the other end surface side. 21 is connected to one end portion of the lower cylindrical third chamber 23 from the other end portion side, and an outlet hose 25 is connected to the other end portion side of the third chamber 23. Then, the exhaust gas is introduced into the first chamber 19 through the inlet hose 17, discharged to the outlet hose 25 of the first silencer 15 through the lower second chamber 21 and the third chamber 23, and The three chambers (expansion chambers) 19, 21, and 23 are silenced.

  In each of the chambers 19, 21, and 23, the moisture in the exhaust gas is condensed due to the low temperature due to the expansion of the exhaust gas, and condensed water is generated. Thus, almost no condensed water remains in the exhaust passage in the vicinity of the first silencer 15.

  Further, the second silencer 27 is connected to the downstream side of the first silencer 15 via the inlet hose 29 of the second silencer 27, and the exhaust gas is an outlet hose 25 of the first silencer 15 and an inlet hose 29 of the second silencer 27. Then, the first silencer 15 leads to the second silencer 27.

  Similarly to the first silencer 15, the second silencer 27 includes a first chamber 31 disposed in the upper part, a second chamber 33 disposed in the middle part, and a third chamber 35 disposed in the lower part. , 35 are formed in a cylindrical shape and are connected in series. Exhaust gas is introduced into the first chamber 31 via the inlet hose 29, and then is passed through the second chamber 33 below and the third chamber 35 below. The sound is discharged to the outlet hose 37 of the silencer 27, and the silencing action is performed by the three chambers (expansion chambers) 31, 33, 35 of the second silencer 27.

  The separator 1 as the third silencer is connected to the second silencer 27 via the inlet hose 39 of the separator 1, and the exhaust gas is discharged from the outlet hose 37 of the second silencer 27 and the inlet portion of the separator 1. It is led from the second silencer 27 to the separator 1 through an inlet hose 39 connected to 41.

Although the structure of the separator 1 will be described in detail later, the separator 1 is integrally formed of a resin and has a substantially rectangular shape. The lower wall surface is provided with an inlet 41 and a condensate drainage 43, and the upper wall surface is provided. Condensed water generated in the exhaust system on the upstream side of the separator 1 is provided to the final separator 1 as a mixed exhaust gas in which exhaust gas and condensed water are mixed by the momentum of exhaust. Is done.
Inside the separator 1, the sound is silenced by expansion, and is separated into condensed water and gaseous exhaust gas. The exhaust gas is discharged from the exhaust outlet 45 through the exhaust duct 47 to the outside, and condensed water Is led from the condensed water discharge part 43 through the drain pipe 49 to the drain filter 51 disposed below.

  Calcium carbonate is contained inside the drain filter 51, and the strongly acidic condensed water led to the drain filter 51 is neutralized by the calcium carbonate and then discharged to the outside through the discharge pipe 53.

The exhaust passage device 3 is configured as described above. Next, the separator 1 will be described with reference to FIGS.
FIG. 2 is a partial cross-sectional view of the front view of the separator 1, which is composed of a substantially rectangular container 101, an inlet portion 41 and a condensed water discharge portion 43 are integrally formed on the lower wall surface, and an exhaust gas is formed on the upper wall surface. The outlet portion 45 is integrally formed.
As shown in FIG. 2, a protruding wall 103 is provided in the container 101 so as to face the inlet 41 in parallel to the upper and lower wall surfaces, and the inlet-side space chamber 105 in which the inlet 41 is disposed by the protruding wall 103. The interior of the container 101 is roughly divided into an outlet-side space chamber 107 in which the exhaust outlet 45 is disposed, and a passage from the inlet 41 to the exhaust outlet 45 is formed in a crank shape as indicated by an arrow S. Yes. And the condensed water discharge part 43 is arrange | positioned at the lowest part of the said entrance side space chamber 105. FIG.

  In addition, the inlet portion 41 is integrally formed with the container 101 so that the inlet hose 39 is connected to the inlet 101 so that mixed exhaust gas of exhaust gas and condensed water flows into the lower wall of the container 101 from below to above. It is formed to project. Further, a condensed water reservoir 111 is formed at a position one step lower than the attachment position of the inlet 41 by the inclined surface, and a condensed water discharge portion 43 is formed on the bottom surface of the condensed water reservoir 111.

Further, as shown in FIG. 2, the inlet portion 41 and the exhaust outlet portion 45 are disposed at substantially opposite positions with the protruding wall 103 interposed therebetween, and the exhaust outlet portion 45 and the condensed water discharge portion 43 are separated by a distance h in the horizontal direction. Only the position is arranged away. Further, as shown in FIG. 4, the inlet portion 41 and the condensed water discharge portion 43 are both located in the center portion in the width direction of the container 101.
Since the exhaust outlet 45 and the condensate drain 43 are arranged at a distance h in the horizontal direction, the condensate near the condensate drain 43 is blown upward along the exhaust gas flow. However, since there is no exhaust outlet portion 45 vertically above the condensate discharge portion 43, it is prevented from being blown out together with the exhaust gas.

  In addition, the protruding wall 103 is formed to extend from the wall surface so as to partition 1/2 to 2/3 between the side wall surfaces of the container 101, and conversely, the distance m between the tip of the protruding wall 103 and the opposite side wall is A communication hole 113 having a width of 1/3 to 1/2 between the side wall surfaces of the container 101 is formed to communicate the inlet-side space chamber 105 and the outlet-side space chamber 107.

Accordingly, the protruding wall 103 is provided so as to partition the inside of the container 101, but the width of the communication hole 113 formed by the tip end portion of the protruding wall 103 and the opposite side wall surface is 1/3 between the side wall surfaces of the container 101. Since it has a width of 1/2, the exhaust gas flow flowing from the inlet 41 toward the exhaust outlet 45 is not restricted to increase the flow rate of the exhaust gas in the container 101. Therefore, the stirring action of the condensed water does not occur and the condensed water is not discharged together with the exhaust gas in the form of droplets.
That is, the length of the protruding wall 103 is set so that the condensed water is not sprayed together with the exhaust gas due to the installation of the protruding wall 103. Further, since the length of the projection wall is also related to the frequency of resonance vibration of the exhaust gas discharged from the exhaust outlet portion in the container 101, the length can be set according to the relationship with the exhaust noise. By adjusting the protruding wall 103, it is possible to adjust the amount of blown-through condensed water discharged from the exhaust outlet portion together with the exhaust gas and the reduction of exhaust sound blow-through.

Further, as shown in FIG. 3, the protruding wall 103 is made of a plate-like member having substantially the same thickness as that of the container 101, and the protruding wall 103 has a rectangular cross-sectional shape of the inlet-side space chamber 105 and a rectangular cross-sectional shape. It forms so that the outlet side space chamber 107 may be connected up and down.
Further, as shown in FIG. 5, a cylindrical column 115 having an exhaust outlet 45 formed on the upper wall surface of the container 101 is integrally projected from the container 101, and the exhaust duct 47 is fitted on the upper surface of the column 115. A circular flange 116 is formed for attachment.

  Since the separator 1 is molded by integral molding of resin, for example, blow molding, the inlet 41 and the condensed water discharger 43 are provided on the lower wall surface, the exhaust outlet 45 is provided on the upper wall surface, and the inlet 41 and The separator 1 in which the protruding wall 103 is formed between the exhaust outlet portion 45 and the exhaust outlet portion 45 can be easily manufactured.

As a reference example , FIG. 7 shows a separator 120 in which the separator 1 is rotated 90 ° to the right. In this case, the condensed water reservoir 122 is formed at the lowermost part of the inlet-side space chamber 121, and the condensed water discharger 123 is disposed on the bottom surface thereof.

Next, the flow of exhaust gas in the separator 1 will be described.
The condensed water generated by the exhaust heat exchanger 5, the first silencer 15 and the second silencer 27 on the upstream side of the separator 1 is the final mixed exhaust gas in a state where the exhaust gas and the condensed water are mixed by the momentum of the exhaust. It is conveyed to the separator 1 and is carried into the container 101 from the inlet 41.
And the mixed exhaust gas carried in first collides with the protruding wall 103 facing the inlet portion 41 and the direction of 90 ° is changed. Separation of the exhaust gas and the condensed water is promoted by the collision with the projection wall 103, and further, the expansion of the mixed exhaust gas and the collision with the container wall surface are caused to the projection wall 103 by the passage formed in a crank shape indicated by an arrow S. By repeating the process four times including the collision, the separation of the exhaust gas and the condensed water is promoted up to the exhaust outlet.

  The exhaust gas flows toward the exhaust outlet 45, and the separated condensed water flows down along the wall surface of the container 101 and accumulates in the condensed water reservoir 111, and is provided on the bottom surface of the condensed water reservoir 111. The condensed water discharge part 43 is led to the drain filter 51 through the drain pipe 49.

  As described above, according to the present embodiment, the passage from the inlet 41 to the exhaust outlet 45 is formed in a crank shape by the protruding wall 103 in the container 101, so that a plurality of mixed exhaust gases to the protruding wall 103 and the side wall are formed. Separation of exhaust gas and condensed water is promoted by the collision of the times.

  Moreover, since the condensed water discharge part 43 is arrange | positioned in the lowest part of the entrance-side space chamber 105, the exhaust outlet part 45 and the condensed water discharge part 43 are installed in the separate space room divided by the projection wall 103. Therefore, it is difficult for the condensed water accumulated in the condensed water reservoir 111 to blow out toward the exhaust outlet 45 along with the flow of the exhaust gas. The amount and exhaust noise can be reduced.

  Further, by providing the separator 1 in the exhaust passage including the first silencer 15, the second silencer 27, and the exhaust heat exchanger 5 in which a large amount of exhaust condensate is generated, It is possible to obtain the exhaust passage device 3 that reduces exhaust noise blow-through.

  According to the present invention, it is possible to efficiently separate and discharge condensed water from the exhaust gas of the engine, to reduce the amount of condensed water blown out from the exhaust outlet together with the exhaust gas, and to reduce exhaust noise leakage. A condensate separator can be obtained, and further, the condensate discharged together with the exhaust gas is provided by providing the separator in an exhaust passage provided with an expansion chamber and an exhaust heat exchanger where a large amount of exhaust condensate is generated. An exhaust passage device that reduces the amount of blow-through and exhaust noise can be obtained, which is advantageous when applied to the exhaust passage of an engine in a cogeneration device or the like.

It is a whole lineblock diagram showing an exhaust passage device provided with a separator of exhaust gas condensed water of an engine concerning an embodiment of the present invention. It is a front fragmentary sectional view of the separator of the exhaust gas condensed water of the engine concerning the embodiment of the present invention. It is the sectional view on the AA line of FIG. It is a B arrow side view of FIG. It is a top view of the separator of the exhaust gas condensed water of the engine concerning the embodiment of the present invention. It is a bottom view of the separator of the exhaust gas condensed water of the engine concerning the embodiment of the present invention. It is a reference example of a separator. It is explanatory drawing of a prior art.

DESCRIPTION OF SYMBOLS 1,120 Separator 3 Exhaust passage apparatus 5 Exhaust heat exchanger 15 1st silencer 19, 21, 23 Chamber (expansion chamber)
27 Second silencer 31, 33, 35 Chamber (expansion chamber)
41 Inlet part 43, 123 Condensate water discharge part 45 Exhaust outlet part 101 Container 103 Projection wall 105, 121 Inlet side space room 107 Outlet side space room 111, 122 Condensate pool part

Claims (3)

In the exhaust gas condensed water separator for the engine, which is provided in the exhaust passage of the engine and separates and discharges the condensed water generated by the expansion or cooling of the exhaust gas from the exhaust path.
The separator includes an inlet portion into which mixed exhaust gas mixed with condensed water flows, an exhaust outlet portion that discharges exhaust gas from which condensed water is separated from the mixed exhaust gas, and condensed water discharge that discharges condensed water. Consisting of a container having a substantially rectangular shape with each part formed on the wall surface,
It is divided into an inlet side space chamber in which the inlet portion is disposed and an outlet side space chamber in which the exhaust outlet portion is disposed by a projecting wall projecting from one side wall in the container so as to face the inlet portion. While forming a passage from the inlet part to the exhaust outlet part via the space ahead of the tip of the projection wall in a crank shape,
A condensed water reservoir is formed at a position that is one step lower than the installation position of the inlet portion by an inclined surface in the inlet side space chamber, and the condensed water discharge portion is disposed on the bottom surface of the condensed water reservoir,
The inlet portion is installed so as to allow the mixed exhaust gas to flow into the container from the bottom to the top, and the condensed water is further lowered to a space position ahead of the tip of the protruding wall that is lowered by one slope from the attachment position of the inlet portion. A pool portion is formed, and the condensed water discharge portion is formed on the bottom surface of the condensed water pool portion formed below the position where the inlet portion is disposed,
Further, the container and the protruding wall are integrally formed of resin, the inlet and condensate drain on the bottom of the container, the exhaust outlet on the top of the container, and the container inlet and exhaust outlet. A projection wall projecting from one side wall in the container is provided between the inlet portion and the exhaust outlet portion so as to face each other with the projection wall interposed therebetween. An exhaust gas condensate separator for an engine, wherein the condensate discharge section and the condensate discharge section are provided with a position shifted in the horizontal direction.   2. The exhaust gas condensed water for an engine according to claim 1, wherein the protruding wall is formed to extend from one side wall in the container so as to partition 1/2 to 2/3 between the side wall surfaces of the container. Separator.   The exhaust gas condensate water separator according to claim 1 or 2 is provided on the exhaust passage, and a plurality of silencers including an expansion chamber are provided upstream of the separator in the exhaust passage, and the silencer is further provided. An exhaust passage device for an engine, wherein an exhaust heat exchanger for the engine is installed upstream of the engine.

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