WO2018131942A1

WO2018131942A1 - Vehicle tank

Info

Publication number: WO2018131942A1
Application number: PCT/KR2018/000631
Authority: WO
Inventors: 계태홍; 기광택; 고세훈
Original assignee: 주식회사 동희산업
Priority date: 2017-01-13
Filing date: 2018-01-12
Publication date: 2018-07-19
Also published as: KR101861316B1

Abstract

The present invention relates to a technology for effectively reducing flow noise by an improvement in the shape and arrangement structure of a baffle. To this end, the present invention introduces a vehicle tank comprising: a front baffle shaped to surround and block liquid fluid flowing in the forward direction of the vehicle in the tank; and a rear baffle installed opposite to the rear side of the front baffle and shaped to surround and block liquid fluid flowing in the backward direction of the vehicle in the tank.

Description

Car tank

The present invention relates to a vehicle tank that effectively reduces the flow noise by improving the shape and arrangement of the baffle.

Exhaust gases emitted from diesel engines contain large amounts of nitrogen oxides (NOx), which cause serious air pollution, and various smoke reduction devices are used to remove such NOx.

Representative soot reduction devices include DOC (Disel Oxidation Catalyst) or DPF (Diesel Particulate Filter) that collect and remove PM (particulate matter) in exhaust gas, and SCR that injects urea (UREA) to remove NOx. (Selective Catalytic Reduction) system.

The SCR system is a system that removes NOx by injecting urea water, which is a reducing agent, into the SCR catalyst. When urea water stored inside the urea water tank is precisely injected into the exhaust pipe through the dosing module, the injected urea water is discharged from the exhaust gas. It is thermally decomposed by heat to change into ammonia, and the ammonia is decomposed into water and nitrogen by reacting with NOx in an SCR catalyst, thereby removing NOx in exhaust gas.

On the other hand, the inside of the urea tank in which the urea water is stored may improve the sound of urea water due to the rapid change in the vehicle, a baffle may be installed to improve the strength of the urea tank.

However, conventionally, as the urea water tank is molded by blow molding, the baffle is also molded together in the forming process of the urea water tank. As a result, the baffle is limited in shape, and in particular, there is a problem that the effect of improving the sound noise is reduced.

The matters described as the background art are only for the purpose of improving the understanding of the background of the present invention, and should not be taken as acknowledging that they correspond to the related art already known to those skilled in the art.

The related art is KR10-2015-0130083A.

The present invention has been made to solve the problems described above, to provide a vehicle tank that effectively reduces the flow noise through the improvement of the shape and arrangement of the baffle.

The configuration of the present invention for achieving the above object, the front baffle provided in a shape that encloses the liquid fluid flowing in the tank toward the forward direction of the vehicle; And a rear baffle installed to face a rear position of the front baffle, the rear baffle being formed to surround and block a liquid fluid flowing in the tank toward the backward direction of the vehicle.

A hole-shaped fusion unit in which the pump is installed is formed in the tank; The front baffle includes a first-first baffle disposed between the front of the fusion portion and the front inner wall of the tank; The rear baffle may include a 2-1 baffle disposed between the rear of the fusion portion and the rear inner wall of the tank.

The first-first baffle and the second-first baffle, the first portion formed in a plate shape from one end to the middle portion along the inner surface of the tank; And a second portion that is bent at the interruption portion and formed in a plate shape to the other end, wherein the first-first baffle and the second-first baffle are arranged such that the bent portions are formed to face each other. Can be.

A second bottom portion is formed at one side of the first bottom portion of the tank in which the pump is installed and connected to the first bottom portion; The front baffle includes a first-to-second baffle disposed adjacent to the front inner wall of the tank located at the second bottom portion; The rear baffle may include a second-2 baffle disposed adjacent to a rear inner wall of the tank located at the second bottom portion.

A third baffle is further disposed between the first and second baffles; The third baffle may be formed by bending a plurality of intermediate portions extending from one end to the other end along an inner surface of the tank.

The third baffle may include a first portion formed in a plate shape from one end to a middle portion toward the front of the vehicle, and a second portion formed in a plate shape toward the rear of the vehicle to the other intermediate portion bent from the middle portion. Repeatedly formed; The first and second portions may be formed to be bent toward the front and the rear of the vehicle by connecting the first and second portions in a bent state, and may be formed such that the number of the bent portions that extend toward the rear is greater than the front of the vehicle.

The second bottom portion is formed to be positioned higher than the height of the first bottom portion; A fourth baffle having a flat cross section in a curved shape may be further disposed in the flow path from the second bottom portion to the first bottom portion.

The fourth baffle may be formed such that the concave portion of the curved shape faces the first bottom portion.

The baffles are upper baffles protruding downward from the ceiling of the tank and lower baffles protruding upward from the bottom of the tank; The first-first baffle, the second-first baffle, and the third baffle may be formed to have a flat cross section of the upper baffle and a flat cross section of the lower baffle.

The present invention through the above problem solving means, when the rapid flow of urea occurs due to a sudden change in behavior such as braking or sudden start of the vehicle, the urea water by the front baffle and rear baffle disposed inside the urea tank By blocking and damping the rapid primary flow and the secondary flow, the amount of urea water directly hitting the inner wall surface of the urea water tank is greatly reduced, thereby improving the flow noise due to the flow of urea water.

In addition, the upper baffle and the lower baffle are installed in a mutually staggered form, thereby ensuring more reliable support through mutual support of the upper and lower baffles in the process of fusion bonding the urea water pump to the urea tank. In addition to improving the welding quality of the urea water pump, there is an effect of further improving the assemblability of the pump.

1 is a view for explaining the configuration of the urea water tank according to the present invention and the arrangement relationship between the upper and lower baffles.

Figure 2 is a three-dimensional view showing the separation of the upper casing and the lower casing constituting the urea water tank of the present invention.

Figure 3 is a view for explaining the arrangement of the lower baffle formed in the lower casing according to the present invention.

Figure 4 is a view for explaining the arrangement of the upper baffle formed on the upper casing according to the present invention.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

The vehicle tank of the present invention is a liquid in which the liquid is stored therein, and preferably may be a urea water tank 1 in which urea water is stored, which may be installed in a vehicle.

That is, the present invention may be applicable to the urea water tank 1, hereinafter, the urea water tank 1 will be described by way of example.

1, the upper casing 1a and the lower casing 1b are formed by injection molding, and the two casings are joined to produce a tank. Can be.

For example, the upper casing 1a and the lower casing 1b may be formed of high density polyethylene (HDPE), and two casings after melting the edges of the upper casing 1a and the lower casing 1b. The urea water tank 1 can be manufactured by making the edges of a jig match with a jig and fusion welding.

In addition, a urea water pump may be installed at a lower end of the urea water tank 1, so that the urea water stored in the urea water tank 1 may be supplied to the dosing module.

On the other hand, the present invention can be installed in a plurality of places the baffle for improving the sound of the urea water, and the strength of the urea water tank 1 in the urea water tank (1).

Specifically, referring to FIGS. 1 and 2, the baffle includes a top baffle that protrudes in a straight direction from the ceiling of the upper casing 1a toward the bottom, and a straight line from the bottom of the bottom casing 1b toward the top. It may include a lower baffle protruding in the direction.

Therefore, among the 1-1 baffles, 1-2 baffles, 2-1 baffles, 2-2 baffles, and third baffles described later,

reference numerals

11a, 12a, 21a, 22a, and 30a refer to the upper baffles. The lower baffle is divided into 11b, 12b, 21b, 22b, and 30b.

In addition, both the upper and lower baffles may be provided with front and rear baffles, respectively.

First, the front baffle may be provided in a shape of surrounding and blocking a liquid (urea water) that flows in the urea water tank 1 toward the forward direction of the vehicle.

The rear baffle is disposed to face the front baffle at a rear position of the front baffle, and surrounds and closes the liquid fluid (urea water) flowing in the urea water tank 1 toward the backward direction of the vehicle. Can be prepared.

That is, the front baffle is disposed toward the front of the vehicle, and the rear baffle is disposed to face the front baffle at the rear side of the vehicle.

According to this configuration, when the vehicle is suddenly braked, the urea water is sharply concentrated toward the front of the vehicle in the urea water tank 1, at which time the urea water is preferentially blocked by the front baffle disposed on the front side of the vehicle. do.

That is, the rapid primary flow of urea water is blocked by the front baffle and damped, thereby greatly reducing the flow amount of urea water directly hitting the front inner wall surface of the urea water tank 1, and the flow according to urea water flow. It will improve the sound.

Subsequently, when the vehicle stops after the rapid braking, the urea water sharply forwards is sharply drawn backwards, and the flow of the urea water is blocked by the rear baffle provided on the rear side of the front baffle.

That is, after the first flow of the urea water, the urea water blocked by the front baffle is secondarily flown to the rear. At this time, the urea water secondary flows again is blocked by the rear baffle and damped, so that the urea water tank 1 The amount of urea water directly hitting the rear inner wall surface is greatly reduced, thereby improving the flow noise due to urea water flow.

In addition, the front baffle of the present invention may be disposed in front of the urea water pump, the rear baffle may be disposed in the rear of the urea water pump.

3 and 4, the lower casing 1b constituting the urea water tank 1 may be provided with a hole-shaped fusion portion 3 having a lower opening, and the fusion portion A urea water pump for pumping urea water along the edge of (3) may be fusion-bonded to install a urea water pump.

Thus, as the front baffle, first-

first baffles

11a and 11b may be installed between the front of the fusion unit 3 on which the urea water pump is installed and the front inner wall surface of the urea water tank 1. .

In addition, as the rear baffle, the second-

first baffles

21a and 21b may be installed between the rear side of the fusion unit 3 on which the urea water pump is installed and the rear inner wall surface of the urea water tank 1. .

That is, the baffles are respectively installed in front and rear of the fusion unit 3 to which the urea water tank 1 is fused, so that, in case of sudden behavior change such as sudden braking of a vehicle, the first-first is installed in front of the urea water pump. Most of the flow of urea water is blocked by the one

baffles

11a and 11b, and then most of the flow of urea water moving backwards is blocked by the second-

first baffles

21a and 21b.

Therefore, the rapid forward and backward flow of urea water due to the rapid behavior of the vehicle is blocked by a large amount of baffles, and the flow amount of urea water directly hitting the urea water tank 1 is greatly reduced. Will be improved.

3 and 4, the first-

first baffles

11a and 11b and the second-

first baffles

21a and 21b may be formed in a 'V' shape.

For example, the first-

first baffles

11a and 11b and the second-

first baffles

21a and 21b are formed in a plate shape from one end to a middle portion along the inner surface of the urea water tank 1. ) And a second portion (B) which is bent at the middle portion and formed in a plate shape to the other end.

In particular, the first-

first baffles

11a and 11b and the second-

first baffles

21a and 21b formed on the lower casing 1b may be formed in a shape in which the bent and opened portions thereof face each other. .

That is, the urea flowing rapidly flows through the inclined portions of the bent first-

first baffles

11a and 11b and the second-

first baffles

21a and 21b to the corners inside the baffle, thereby being applied to the baffles. In addition to reducing the amount of impact of urea water, the flow amount of urea water directly applied to the inner wall surface of the urea water tank 1 is reduced, thereby improving the sound flow of urea water more efficiently.

Meanwhile, the present invention may further include the first-

second baffles

12a and 12b in addition to the first-

first baffles

11a and 11b as the front baffles, and the second-

first baffles

21a and 21b as the rear baffles. In addition to this, the

second baffles

22a and 22b may be further provided.

3 and 4, a fusion unit 3 for installing the urea water pump is formed in the first bottom portion 5 of the urea water tank 1, and the urea water tank ( A second bottom portion 7 is formed at one side of the first bottom portion 5 of 1), and the first bottom portion 5 and the second bottom portion 7 may be continuously formed.

As the front baffle, the first to

second baffles

12a and 12b may be installed adjacent to the front inner wall surface of the urea water tank 1 located at the second bottom portion 7.

In addition, as the rear baffle, the second to

second baffles

22a and 22b may be installed adjacent to the rear inner wall surface of the urea water tank 1 located in the second bottom portion 7.

At this time, the

first baffles

12a and 12b and the

second baffles

22a and 22b may have a flat cross section in a straight shape.

That is, by appropriately blocking the primary flow and the secondary flow of urea water rapidly flowing not only in the portion where the urea water pump is installed, but also in the portion where the urea water pump is not installed, the entire urea water tank 1 interior. It will improve the rapid flow of urea water, which is an excellent effect to improve the flow noise of urea water.

In addition, the

third baffles

30a and 30b may be further disposed between the first and

second baffles

12a and 12b and the second and

second baffles

22a and 22b for a more reliable sound improvement.

To this end, the third baffles (30a, 30b) is formed while extending from one end to the other end along the inner surface of the urea water tank (1), the middle portion can be formed by bending over a plurality of places, The three

baffles

30a and 30b may be formed in a zigzag shape having a flat cross section of 'W'.

More specifically, the third baffle 30b formed in the lower casing 1b, in particular, has a first portion A formed in a plate shape toward the front of the vehicle from one end to the middle portion, and is bent at the middle portion to be adjacent. The second portion B, which is formed in a plate shape toward the rear of the vehicle, may be repeatedly extended to the other middle portion. That is, the third baffle 30b may be disposed in a zigzag shape along the left and right directions perpendicular to the plane of the front and rear directions of the vehicle.

Particularly, by such a configuration, the first portion A and the second portion B are connected to each other in a bent state, and the bent portion is formed to face the front and the rear of the vehicle. It may be formed so that the number of the bent portion facing more.

For example, in the present invention, one is formed as a bent portion that opens toward the front of the vehicle, and two bent portions that are formed toward the rear of the vehicle are formed.

That is, the first and second flows of urea are blocked by the first and

second baffles

12a and 12b and the second and

second baffles

22a and 22b, as well as the third baffle 30a and the second flow. By flowing the inclined portion through the bent portion of 30b) to the inner edge portions of the

third baffles

30a and 30b, the impact amount of the urea water in the

third baffles

30a and 30b can be reduced more reliably. Will be.

In particular, since the bent portion that extends toward the rear of the vehicle in the third baffle 30b is formed more than the bent portion that opens toward the front, the flow of urea water can be more effectively damped during braking of the vehicle.

That is, since the flow of urea is the greatest during sudden braking of the vehicle, if a rapid primary flow of urea occurs in the front of the vehicle during sudden braking, the shape of the bent portion that is opened at a plurality or more toward the rear of the vehicle Most of the urea water flows into the third baffle 30b.

Therefore, the flow amount of the urea water flowing out of the third baffle 30b can be greatly reduced, so that the impact amount of the urea water directly applied to the inner wall surface of the urea water tank 1 can be reduced. It will reduce the flow noise due to the flow.

On the other hand, in the present invention, it is possible to prevent the rapid flow of urea water to improve the sound of the flow, while preventing the urea water spreading like the urea water tank (1).

Specifically, referring to FIG. 3, the second bottom portion 7 is formed to be positioned higher than the height of the first bottom portion 5, in particular, the first bottom portion in the second bottom portion 7. A fourth baffle 40 having a flat cross section in a curved shape may be further disposed in the flow path leading to (5).

In this case, the fourth baffle 40 may be formed such that the concave portion of the curved shape faces the first bottom portion 5.

That is, when a rapid flow of urea water occurs around the urea water pump, the urea water is discharged by the fourth baffle 40 provided between the first bottom portion 5 and the second bottom portion 7. In 5) to block the flow toward the second bottom portion (7).

In particular, since the fourth baffle 40 is formed in a curved shape, the urea water flowing from the first bottom part 5 toward the second bottom part 7 flows along the curved surface of the fourth baffle 40. In addition, the flow shock of the urea water applied to the fourth baffle 40 is reduced, thereby improving the flow noise of the urea water.

Meanwhile, referring to FIGS. 1 and 2, the present invention may be arranged in such a manner that the flat cross section of the upper baffle formed on the upper casing 1a and the flat cross section of the lower baffle formed on the lower casing 1b cross each other. have.

For example, among the above-described baffles, the first-

first baffles

11a and 11b, the second-

first baffles

21a and 21b, and the

third baffles

30a and 30b, each of which has an intermediate portion bent, are formed. The flat cross-section of the upper baffle formed on the upper casing 1a and the flat cross-section of the lower baffle formed on the lower casing 1b cross each other.

In detail, the hole in which the urea water pump is installed is formed at one side of the lower casing 1b, and the urea water pump is fusion-bonded along the edge of the hole, and the urea water pump is fused to the lower casing 1b. In order to do this, the urea water pump is pressed against the lower casing 1b and fused.

Accordingly, in the process of pushing the urea water pump toward the lower casing 1b, the upper baffle and the lower baffle are alternately supported, thereby securing a more reliable support force, and thus the fusion quality and the assemblability of the urea water pump. Will be improved.

As described above, according to the present invention, when a sudden flow of urea water occurs due to a sudden change in behavior such as sudden braking or starting of a vehicle, the urea water is prevented by the front and rear baffles disposed inside the urea tank 1. The damping is blocked by abrupt primary flow and secondary flow. Therefore, the flow volume of urea water which directly hits the inner wall surface of the urea water tank 1 is greatly reduced, thereby improving the flow sound according to the flow of urea water.

In addition, the upper baffle and the lower baffle are installed in a mutually staggered form, so as to secure a more reliable support force through the mutual support action of the upper baffle and the lower baffle in the process of fusion bonding the urea water pump to the urea tank (1). As a result, the welding quality of the urea water pump can be improved, and the assemblability of the pump can be further improved.

On the other hand, the present invention has been described in detail only with respect to the specific examples described above it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, it is natural that such variations and modifications belong to the appended claims. .

[Description of the code]

1: Urea Water Tank 1a: Upper Casing

1b: lower casing 3: welded portion

5: 1st bottom part 7: 2nd bottom part

11a, 11b: 1-1

baffle

12a, 12b: 1-2 baffle

21a, 21b: 2-1

baffle

22a, 22b: 2-2 baffle

30a, 30b: third baffle 40: fourth baffle

Claims

A front baffle provided in a shape of surrounding and blocking a liquid fluid flowing in the tank toward the forward direction of the vehicle;

And a rear baffle installed to face a rear position of the front baffle, the rear baffle being configured to enclose and block a liquid fluid flowing in the tank toward the backward direction of the vehicle.
The method according to claim 1,

A hole-shaped fusion unit in which the pump is installed is formed in the tank;

The front baffle includes a first-first baffle disposed between the front of the fusion portion and the front inner wall of the tank;

The rear baffle includes a 2-1 baffle disposed between the rear of the fusion portion and the rear inner wall of the tank.
The method according to claim 2,

The 1-1 baffle and the 2-1 baffle,

A first portion formed in a plate shape from one end to a middle portion along the inner surface of the tank;

And a second portion that is bent from the middle portion and formed into a plate shape to the other end.

The first-first baffle and the second-first baffle are arranged so that the bent and opened portions thereof face each other.
The method according to claim 2,

A second bottom portion is formed at one side of the first bottom portion of the tank in which the fusion portion is formed so as to be connected to the first bottom portion;

The front baffle includes a first-to-second baffle disposed adjacent to the front inner wall of the tank located at the second bottom portion;

The rear baffle includes a second baffle disposed adjacent to the rear inner wall surface of the tank located in the second bottom portion.
The method according to claim 4,

A third baffle is further disposed between the first and second baffles;

The third baffle is a vehicle tank, characterized in that the intermediate portion extending from one end to the other end along the inner surface of the tank is formed over a plurality of locations.
The method according to claim 5,

The third baffle,

A first portion formed in a plate shape from one end to the middle portion toward the front of the vehicle, and a second portion formed in the plate shape toward the rear of the vehicle to the other intermediate portion bent from the middle portion and repeatedly formed;

The first portion and the second portion are connected in a bent state, the bent portion is formed to face the front and rear of the vehicle, characterized in that the number of the bent portion that is formed toward the rear more than the front of the vehicle, characterized in that formed Car tank.
The method according to claim 4,

The second bottom portion is formed to be positioned higher than the height of the first bottom portion;

The vehicle tank of claim 4, further comprising a fourth baffle having a flat cross-section on a flow path extending from the second bottom portion to the first bottom portion.
The method according to claim 7,

The fourth baffle is a vehicle tank, characterized in that the concave portion of the curved shape is formed toward the first bottom portion.
The method according to claim 1,

The baffles are upper baffles protruding downward from the ceiling of the tank and lower baffles protruding upward from the bottom of the tank;

The flat section of the upper baffle and the flat section of the lower baffle vehicle tank, characterized in that the arrangement is arranged to cross each other.