KR20040066534A - Radiator for vehicle - Google Patents

Abstract

PURPOSE: A radiator for a vehicle is provided to discharge steam gathered in a coolant inlet pipe without mending the radiator when the coolant inlet pipe is higher than a filler neck. CONSTITUTION: A radiator for a vehicle comprises a first header tank(10) having a coolant inlet pipe(13) and a filler neck(30); a second header tank having a coolant outlet pipe; plural tubes(21) connected to the first and second header tanks at the upper and lower ends and arranged side by side; and plural radiant fins(22) installed between the tubes. The radiator includes a steam discharge unit make steam, gathered to the coolant inlet pipe, discharged through a filler neck if the coolant inlet pipe is arranged higher than the filler neck.

Description

Radiator for Cars {RADIATOR FOR VEHICLE}

The present invention relates to a radiator for an automobile, and more particularly, to a radiator for an automobile to remove the water vapor generated in the process of cooling the engine while the coolant circulates inside the engine without modifying the front of the radiator.

In general, in a vehicle equipped with an internal combustion engine, heat generated during operation of the engine is conducted to a cylinder head, a piston, a valve, and the like. As a result, excessively high temperatures of these components reduce the strength of the components due to thermal expansion or deterioration, shorten the engine life, deteriorate the combustion state, cause knocking or premature ignition, and reduce engine output.

In addition, when the engine is incompletely cooled, the oil film on the inner circumferential surface of the cylinder is broken, and the lubrication function is deteriorated. As a result, the engine oil is deteriorated, which causes abnormal cylinder wear and the piston is fused to the inner wall of the cylinder. Done.

In order to prevent the phenomenon caused by overheating of the engine as described above, a car is provided with a water cooling device for cooling the engine.

The water-cooled cooling device is to lower the temperature while the coolant circulates the cylinder block and the cylinder head by a water pump, and is provided with a radiator, a cooling fan, and a water temperature controller for heat dissipation of the coolant.

The radiator is a device for cooling the cooling water whose temperature has risen while passing through the engine. As shown in FIG. 1, the radiator has a basic configuration of the upper and lower header tanks 1 and 2 and the radiator core 3.

The upper and lower header tanks 1 and 2 are tanks that form flow paths around the headers 1a and 2a and the headers 1a and 2a to which the tubes 3a of the radiator core 3, which will be described later, are coupled ( 1b) and 2b. The radiator core 3 has a plurality of tubes 3a coupled to the headers 1a and 2a by cooling water flowing therein, and cooling water flowing between the tubes 3a by being disposed between the tubes 3a. It is composed of a plurality of heat radiation fins (3b) for heat dissipation.

In order to guide the circulation of the cooling water, the upper header tank 1 is provided with a cooling water inlet tube 4, and the lower header tank 2 is provided with a cooling water outlet tube 5.

On the other hand, the upper header tank (1) performs a function of passage of the replacement / replacement of the coolant, and guides the coolant to move to the reservoir tank (not shown) to reduce the pressure when the pressure inside the radiator is excessively increased. The filler neck 6 is installed.

The filler neck 6 opens and closes the filler neck main body 6a, the upper opening of the filler neck main body 6a, and the cap 6b in which the pressure valve (not shown) was embedded, and the filler neck main body 6a. It is composed of an overflow pipe (6c) coupled to and connected to the reservoir tank.

As the coolant circulates inside the engine, a part of the phase changes into water vapor, thereby circulating the circulation system. Since the water vapor has low thermal conductivity, cooling efficiency is lowered. It also serves as a discharge function.

On the other hand, after developing a gasoline engine when developing a new model, there may be a case where a diesel engine vehicle applying the same platform body is developed. In this case, since the layout of the basic engine room is fixed after the development of the gasoline vehicle, the radiator design is developed according to the diesel engine.

However, when designing a radiator for a diesel vehicle in the development of a diesel vehicle, the coolant inlet tube 4 may be disposed higher than the inlet of the filler neck 6 due to the layout of the engine room or the like. Water vapor is collected above the coolant inlet pipe 4 above the inlet of the filler neck 6, and this water vapor is formed by the height difference between the coolant inlet pipe 4 and the filler neck 6. Can not be discharged through. As a result, the amount of cooling water introduced through the cooling water inlet pipe 4 is small as water vapor occupies the disadvantage of not effectively cooling the engine. In order to solve this drawback, there is a problem in that the design of the radiator must be completely modified.

The present invention is to solve the above problems, to provide a radiator for an automobile that can discharge the water vapor collected in the coolant inlet tube without modifying the front of the radiator when the coolant inlet tube is higher than the filler neck. have.

1 is a perspective view of a radiator for a vehicle according to the prior art.

Figure 2 is a front view of a part of the radiator for automobiles according to the present invention.

Figure 3 is a side view of a part of the radiator for automobiles according to the present invention.

4 is a plan view of a radiator for automobiles according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: upper header tank, 11: header

12 tank, 13 coolant inlet and outlet

15: ridge, 16, 34: nipple

20: radiator core, 21: tube

22: heat sink fin, 30: filler neck

31: filler neck body, 32: cap

33: overflow pipe, 40: bypass hose

The present invention for achieving the object as described above, the first header tank is provided with a coolant inlet pipe and a filler neck; A second header tank having a coolant outlet pipe; A plurality of tubes having upper and lower ends connected to the first and second header tanks and arranged side by side; And, in the radiator for automobiles comprising a plurality of heat dissipation fins provided between the tubes, when the coolant inlet pipe is disposed higher than the filler neck guides the water vapor collected in the coolant inlet pipe to be discharged through the filler neck It characterized in that it comprises a steam discharge means.

The steam discharge means, and the nipple is formed in each of the cooling water inlet pipe and filler neck; And, it may be configured to include a bypass hose for connecting the nipple.

Preferably, the bypass hose is disposed to be inclined upward toward the filler neck side.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

As shown in FIG. 2, the automobile radiator according to the present invention is based on the upper and lower header tanks 10 (only upper header tanks are shown in the drawing) and the radiator core 20.

The upper header tank 10 is composed of a header 11 to which the tube 21 of the radiator core 20, which will be described later, is coupled, and a tank 12 that surrounds the header 11 to form a flow path. It is made of the same structure as the header tank.

The radiator core 20 dissipates the coolant flowing inside the tubes 21 and the plurality of tubes 21 having upper and lower portions respectively coupled to the header 11 and the tubes 21 arranged therebetween. It consists of a heat dissipation fin 22 to.

In order to guide the circulation of the cooling water, the upper header tank 10 is provided with a cooling water inlet pipe 13, and although not shown in the drawing, cooling water outlet pipes are respectively installed in the lower tank.

As shown in Figures 2 to 4, the upper one side of the upper header tank 10 serves as a passage function of replenishment / replacement of the coolant, and to reduce the pressure when the pressure inside the radiator is excessively increased. A filler neck 30 is installed to guide the tank to the reservoir tank (not shown). According to the present invention, the filler neck 30 may be installed on the upper portion of the horizontal portion 14 (shown in FIGS. 3 and 4) horizontally lateral to one side from the upper header tank 10.

As shown in FIGS. 2 and 3, the filler neck 30 opens and closes the filler neck body 31 and the inlet of the filler neck body 31, and includes a cap having an internal pressure valve (not shown). 32 and an overflow pipe 33 coupled to the pillar neck body 31 and connected to the reservoir tank.

2 and 4, according to the layout of the engine room, the coolant inlet pipe 13 is formed in the ridge 15 protruding upward in the upper header tank 10 higher than the inlet of the filler neck 30. Can be.

According to the present invention, a part of the coolant that cools the engine while passing through the engine is heated in the cooling process and phase-changed into water vapor. This water vapor enters the upper header tank 10 of the radiator together with the coolant, and flows over the coolant by specific gravity, and is collected in the coolant inlet pipe 13 and the ridge 15 relatively higher than the other sections. (13) and the water vapor collected in the ridge 15 is configured to be discharged to the outside. The structure of water vapor discharge can be configured to allow water vapor to be discharged through, for example, a filler neck 30 to match the pressure inside the radiator. As shown in Figs. 2 and 4, the filler neck 30 and the ridge 15 are each formed with nipples 34 and 16 which can be piped, and the nipples 34 and 16 are bypassed. It is connected to the hose 40.

The bypass hose 40 may be disposed to be inclined upward toward the filler neck 30 so that water vapor collected in the coolant inlet pipe 13 may be discharged better.

The action of the car radiator according to the invention configured as described above is as follows.

As the coolant in the liquid phase passes inside the engine, it takes away heat generated by the engine and heats itself.In the process of cooling the engine, part of the coolant in the liquid phase is changed into water vapor due to the heating of the coolant. It will cycle.

The liquid cooling water containing water vapor flows into the upper header tank 10 of the radiator, and then exchanges heat with air passing through the tube 21 and the heat dissipation fin 22 while descending to the lower tank side along the plurality of tubes 21. It will cool the engine while it is cooled.

In this cooling water circulation process, the cooling water introduced into the upper header tank 10 includes water vapor, which rises from the upper header tank 10 to the relatively high ridge 15 by the specific gravity. Water vapor collected in the ridge 15 is introduced into the filler neck 30 through the bypass hose 40, and the water vapor introduced into the filler neck 30 is discharged to the outside through the overflow pipe 33.

Accordingly, water vapor collected in the coolant inlet pipe 13 and the ridge 15 having a relatively high height due to a phase change in the liquid coolant while cooling the engine is passed through the filler neck 30 through the bypass hose 40. As it is discharged to the outside, the engine is cooled only by liquid coolant.

As described above, according to the automobile radiator according to the present invention, when the coolant inlet pipe is arranged higher than the filler neck by the layout of the engine room, the surrounding structure, etc., the water vapor changed in phase while circulating the engine does not collect in the coolant inlet pipe. As it is discharged through the filler neck, the engine is only cooled by pure liquid coolant, which allows the engine to cool normally and consequently maintain engine performance.

In addition, since the steam can be discharged by a simple operation of installing the bypass hose without modifying the radiator, the manufacturing cost can be reduced, and the productivity can be improved.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (3)

A first header tank having a coolant inlet tube and a filler neck; A second header tank having a coolant outlet pipe; A plurality of tubes having upper and lower ends connected to the first and second header tanks and arranged side by side; And, in the radiator for automobiles comprising a plurality of heat dissipation fins provided between the tubes, When the cooling water inlet pipe is arranged higher than the filler neck car radiator comprising a water vapor discharge means for guiding the water vapor collected in the cooling water inlet pipe through the filler neck. The water vapor discharging unit of claim 1, further comprising: nipples formed in the cooling water inlet pipe and the filler neck, respectively; And a bypass hose that connects the nipple to guide the water vapor collected in the coolant inlet pipe to flow into the filler neck. 3. The radiator for automobile according to claim 2, wherein the bypass hose is disposed to be inclined upward toward the filler neck.