JPH07208143A - Fluid cooling device - Google Patents

Abstract

PURPOSE:To increase the cooling efficiency of a fluid as well as to obtain a high sound arresting effect, by passing a high temperature fluid through a labyrinth form of fluid passage formed in a cooling case body while colliding to baffers, and exhausting it by making into a rotary flow by blade members, in a device favorable for a cooling device of the exhaust gas in an automobile and the like. CONSTITUTION:A high temperature fluid Gled in from a leading inlet 2 to a cooling case body 1 flows through a labyrinth form fluid passage R formed in the cooling case body 1, by repeating detourings while colliding to plural baffles 4. Furthermore, it flows in a rotary flow by the function of blade members 6, and exhausted from an exhaust port 3. That is, the fluid G collides to the blade member 6 at first, a rotary flow is given by twisted part pieces 6a, and it is detoured to the outer side through inlet side baffles 4. Then, it collides to central baffles 4 and detoured to the inner side, passing through a through hole 4a, collded to the blade member 6 at the next stage, and after a rotary flow is given by the part pieces 6a, the fluid is let flow to the external side after passing through the baffles 4b at the outlet side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid cooling device used for an internal combustion engine such as a diesel engine for automobiles, ships, construction machinery, etc., a refuse incinerator, a boiler, a steam cover, a hot water cooling device, a combustion device and the like. It is a thing.

[0002]

2. Description of the Related Art Conventionally, as a fluid cooling device of this type, for example, an exhaust gas cooling device in an automobile or the like, a water cooling system or an air cooling system connected to a muffler has been proposed.

[0003]

However, in the case of the above-mentioned conventional structures, it is very difficult to incorporate them into existing vehicles such as automobiles and construction machines, boilers, combustion devices, etc., and the structure is complicated and expensive. have.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve these inconveniences, and the gist thereof is to form an inlet and an outlet in a cooling case body, A baffle for partitioning a labyrinth-like fluid passage is provided inside, and a vane member for giving a rotating flow to the fluid passing through the fluid passage is provided, and the inside of the pipe communicates with external air in the cooling case body. A fluid cooling device is characterized in that a plurality of circulation pipes are provided, which enables the outer surface of the pipe wall to contact the fluid passing through the fluid passage.

At this time, it is desirable to apply a catalyst capable of removing or reducing sulfur-based chemical substances such as manganese, nickel-based metals, palladium and rhodium and carbon-based chemical substances to the surface of the blade member.

[0006]

[Operation] High-temperature fluid such as exhaust gas exhausted from automobiles is introduced into the cooling case body through the inlet, and this high-temperature fluid disturbs the labyrinth-shaped fluid passage formed in the cooling case body. While repeating the detour while colliding with, the high temperature fluid flows as a rotating flow by the vane member and is discharged from the exhaust port.At this time, the fluid passes while contacting the outer surface of the pipe wall of the flow pipe, and this contact As a result, heat is exchanged between the high temperature fluid and the external air in the tube through the tube wall, and the passing fluid is cooled.

[0007]

1 to 7 show an embodiment in which the present invention is applied to a muffler of an automobile, 1 is a cooling case body, and in this case, it is formed in a cylindrical shape by a stainless material or the like,
The inlet portion 2 is formed on one side surface, and the outlet portion 3 is formed on the other side surface.

Reference numeral 4 is a baffle plate, and 5 is a flow pipe. In this case, the inside of the pipe can communicate with the external air N between the left and right walls of the cooling case body 1, and the outer surface of the pipe wall receives the fluid G passing through the fluid passage R. Six contactable flow tubes 5 are laid, the center of the flow tube 5 divides the inside of the cooling case body 1 into two, and a central baffle plate 4b having a plurality of through holes 4a opened in the center 5 and is attached to the inner surface of the cooling case body 1, and the inlet side baffle plate 4c and the outlet baffle plate 4d are attached to each inner surface of the flow pipe 5, and the center of the cooling case body 1 having the through hole 4a. Baffle plate 4b, entrance side baffle plate 4c, and exit baffle plate 4d
A labyrinth-like fluid passage R is partitioned and formed by a plurality of baffle plates 4 consisting of.

Reference numeral 6 is a blade member, and in this case, it is composed of two blade members 6, a blade member 6 attached to the front side of the entrance-side baffle plate 4c and a blade member 6 attached to the front side of the outlet-side baffle plate 4d. The metal disk material is radially cut, and the fan-shaped part pieces 6a are twisted in the same direction, and the two blade members 6 are twisted in different directions.

In this case, a catalyst 7 capable of removing or reducing sulfur chemical substances (S) such as manganese, nickel metal, palladium and rhodium and carbon chemical substances (NO) is deposited on the surface of the blade member 6 by vapor deposition or the like. Has been done.

Since this embodiment has the above-mentioned structure, the cooling case body 1 is disposed in the middle of the exhaust pipe L of the automobile W, and the high temperature fluid G such as exhaust gas to be exhausted is introduced through the introduction port 2. The high temperature fluid G introduced into the cooling case body 1 repeatedly detours while colliding with the baffle plates 4 in the labyrinthine fluid passage R formed in the cooling case body 1, and further the high temperature fluid G is blown. The member 6 turns into a rotating flow and is discharged from the exhaust port portion 3. In this case, first, the fluid G is the blade member 6.
A rotating flow is given by the action of the twisted partial piece 6a and is diverted to the outside through the entrance side baffle plate 4c, and between the entrance side baffle plate 4c and the inner wall surface of the cooling case body 1. The fluid G passes through the central baffle plate 4b and detours inward, and the fluid G passes through the through hole 4a and collides with the blade member 6 of the next stage. A rotating flow in the opposite direction is given, and it detours outward again via the output side baffle plate 4d,
After passing through between the outlet side baffle plate 4d and the inner wall surface of the cooling case body 1, it is discharged from the discharge port portion 3.

At this time, the fluid G passes while coming into contact with the outer surface of the pipe wall of the flow pipe 5, and due to this contact, heat is exchanged between the high temperature fluid G and the external air N in the pipe through the pipe wall. A convection action occurs in the external air N in the pipe, and the heat exchange and convection action cool the fluid G. For example, according to the result of an experiment in which the fluid cooling device of the present embodiment is connected to a position in front of the muffler of the exhaust pipe of an automobile, the temperature of the exhaust gas flowing into the inlet port 2 is about 632 ° C., and the exhaust gas is discharged from the outlet port 3. As a result, the temperature entering the muffler 8 became 369 ° C, and the temperature of the exhaust gas exiting from the muffler became about 50 ° C.

In this way, the fluid G collides with the baffle plate 4 in the fluid passage R formed in the cooling case body 1 and repeats detouring, and at the same time, the blade member 6 flows as a rotational flow and is discharged. Therefore, the damping effect of the fluid pressure and the sound deadening effect due to the collision interference between the sound and the sound can be obtained, and at the same time, the high temperature fluid G and the external air N inside the pipe can be connected via the pipe wall of the flow pipe 5. The heat exchange is performed well, and the fluid G can be cooled by the convection action of the external air N in the pipe, and the structure can be extremely simplified. For example, when the fluid G is adopted in an automobile or the like, the traveling is accompanied by the convection action. The cooling effect can be further improved by obtaining the action of forcedly passing the outside air due to the above.

Further, in this case, a catalyst 7 of manganese, nickel metal, palladium, rhodium or the like is formed on the surface of the blade member 6.
The sulfur-based chemical substances (S) and carbon-based chemical substances (NO) in the exhaust gas of the automobile can be removed or reduced, and the cleaned exhaust gas can be discharged to the outside. it can.

The present invention is not limited to the above-mentioned embodiment, but is also applicable to a muffler for an engine such as a construction machine or a boiler,
It can also be used for refuse incinerators, steam coverrs, hot water cooling devices, and other combustion devices.For example, the structure, quantity, etc. of the cooling case body, blade members, and baffle plates, etc. can be designed appropriately. is there.

As another embodiment, an external cooling device for supplying cooling air to the flow pipe 5 shown in the above embodiment is separately provided, and the external air or the external cooling air is forcedly fed into the flow pipe 5. You may make it cool.

[0017]

As described above, according to the present invention, the high-temperature fluid collides with the baffle plate in the labyrinthine fluid passage formed in the cooling case to repeat the detour, and at the same time, flows into a rotating flow by the blade member and is discharged. Therefore, the damping effect of the fluid pressure and the sound deadening effect due to the collision interference between the sound and the sound can be obtained, and the heat exchange between the high temperature fluid and the external air in the pipe is performed through the pipe wall of the flow pipe. Therefore, the fluid can be cooled, the structure can be extremely simplified, the manufacturing cost can be reduced, and the flexibility of mounting can be improved.

Further, by applying a catalyst such as manganese, nickel-based metal, palladium or rhodium to the surface of the blade member, the sulfur-based chemical substance (S) or carbon-based chemical substance (NO) in the exhaust gas of the automobile is removed or Can be reduced,
The cleaned exhaust gas can be discharged to the outside.

Furthermore, since a plurality of blade members for imparting rotational flows in mutually different directions to the fluid passing through the fluid passage are arranged in multiple stages, the fluid passing through the fluid passage rotates in opposite directions. The heat exchange between the hot fluid and the external air in the pipe can be achieved through the pipe wall of the flow pipe, and the multi-stage good damping and sound deadening effect can be obtained. Is improved, and the fluid can be cooled more effectively.

The above initial purpose can be sufficiently achieved.

[Brief description of drawings]

FIG. 1 is an overall perspective view in which a part of an embodiment of the present invention is cut away.

2 is an overall vertical cross-sectional view of the embodiment of the present invention shown in FIG.

FIG. 3 is a perspective view of a blade member of the embodiment of the present invention shown in FIG.

FIG. 4 is a side view of the blade member of the embodiment of the present invention shown in FIG.

5 is a cross-sectional view of the embodiment of the present invention shown in FIG.

6 is a cross-sectional view of the embodiment of the present invention shown in FIG.

FIG. 7 is a use state diagram of the embodiment of the present invention shown in FIG.

[Explanation of symbols]

 1 Cooling Case Body 2 Inlet Port Part 3 Discharge Port Part 4 Baffle Plate 5 Flow Pipe 6 Blade Member 7 Catalyst G Fluid R Fluid Passage N External Air

Claims (3)

[Claims] 1. An inlet port and an outlet port are formed in a cooling case body, and a baffle plate for partitioning a labyrinth-like fluid passage is provided in the cooling case body, and the baffle plate is passed through the fluid passage. The cooling case body is provided with a plurality of flow pipes that allow the inside of the pipe to communicate with external air and the outer surface of the pipe wall to contact the fluid passing through the fluid passage. A fluid cooling device characterized by being configured as follows. 2. A fluid cooling device according to claim 1, wherein the surface of the blade member is provided with a catalyst capable of removing or reducing sulfur-based chemical substances such as manganese, nickel-based metals, palladium and rhodium, and carbon-based chemical substances. . 3. The fluid cooling device according to claim 1, wherein a plurality of blade members for imparting rotational flows in different directions to the fluid passing through the fluid passage are arranged in multiple stages.