KR101210817B1 - Radiator Tank And Oil Cooler Assembly - Google Patents

Abstract

The present invention relates to a radiator tank and an oil cooler assembly, and more particularly, to define a height at which a tube of an oil cooler provided in a radiator tank is formed, a height at which oil can flow, an inner pin height and a singular element inside each tube. The present invention relates to a radiator tank and an oil cooler assembly which can be easily assembled, sufficient oil can be distributed, and heat exchange performance can be improved.

Radiator tank, oil cooler, heat dissipation, pressure drop

Description

Radiator Tank And Oil Cooler Assembly

The present invention relates to a radiator tank and an oil cooler assembly, and more particularly, to define a height at which a tube of an oil cooler provided in a radiator tank is formed, a height at which oil can flow, an inner pin height and a singular element inside each tube. The present invention relates to a radiator tank and an oil cooler assembly which can be easily assembled, sufficient oil can be distributed, and heat exchange performance can be improved.

The radiator is configured to prevent the temperature of the engine from rising to a predetermined temperature or more. The radiator circulates the high-temperature cooling water circulating in the engine while absorbing the heat generated by the combustion, passes through the radiator, It is a heat exchanger that dissipates heat to prevent engine overheating and maintain optimal operating conditions.

On the other hand, the oil cooler (Oil Cooler) is provided in the automatic transmission vehicle, the temperature of the automatic transmission oil communicating with the inside of the oil cooler is higher than the temperature of the radiator, so the heat exchange is cooled by using the engine coolant of the radiator. .

The oil cooler can be largely divided into a built-in oil cooler and an external oil cooler provided inside the radiator tank, and the built-in oil cooler can be divided into a double pipe type oil cooler having a double pipe form, and a stacked oil cooler, and the double pipe type The radiator tank and oil cooler assembly is shown in FIG. 1A. The double tubular oil cooler 10 illustrated in FIG. 1A is provided inside a tank of a radiator, and has an inlet body 11 having a concentric shape and inflow or outflow of oil into the body 11 at one side. A pipe 13 and an outlet pipe 14 are formed, and cooling water of the radiator flows inside and outside the main body 11 to cool the oil supplied to the main body 11.

The main body 11 is formed with a plurality of channels long in the longitudinal direction of the tank by the inner fin (12, Inner fin) to increase the heat exchange efficiency.

However, when the built-in oil cooler is formed in the form of a double pipe and the length of the oil cooler is limited, the capacity of the oil cooler has a limit, and the structure for dispensing the oil into the channels formed in the main body is complicated and productive. There is a problem of this deterioration.

The stacked oil cooler is illustrated in FIG. 1B, and the stacked oil cooler 20 is formed in each of the pair of header tanks 25 and the header tank 25, which are formed to be spaced apart by a predetermined distance, such as a general heat exchanger. The inlet pipe 23 and the outlet pipe 24; Both ends are fixed to the header tank 25 to form a flow path 21, and the pin (22) interposed between the tube 21; comprises a.

The fin 22 of the stacked oil cooler refers to an outer fin interposed between the tubes 21 and formed at a portion through which the coolant flows in the radiator tank. Inner pins are formed separately in the space where oil is distributed.

When the oil cooler is provided inside the radiator tank, the outer pin may act as an element that obstructs the flow of cooling water and may be deleted as necessary.

The laminated oil cooler has an advantage that the tube and the fins are stacked to increase the heat exchange efficiency, but when the laminated oil cooler is also provided in the radiator tank as a built-in type, the capacity of the oil cooler like the double tube oil cooler is limited. In addition, a problem may occur due to an increase in the internal pressure depending on the viscosity of the internal oil.

To make it worse, the oil cooler may have difficulty in assembling the oil cooler and the radiator tank when the capacity of the oil cooler is enlarged to sufficiently secure the flow rate of the oil flowing therein. When the size of the oil cooler is reduced to improve the capacity of the oil flowing therein is very small, there is a problem that it is difficult to effectively cool the oil.

In addition, when the oil cooler is provided inside the radiator tank, the oil inside the oil cooler should be heat-exchanged with the cooling water flowing in the radiator tank, and when the size of the oil cooler is smaller, the area in contact with the cooling water is also reduced. This decreases the heat exchange performance.

On the other hand, in order to increase the contact area between the oil and the coolant, the number of tubes through which oil can flow must be increased. The width of the radiator tank and the specification of the oil cooler are limited, so that the height and the tube inside the tube constituting the oil cooler are limited. There is a problem that is difficult to determine the distance between.

Accordingly, there is a need for a specific numerical design that can be easily assembled inside the radiator tank and can easily exchange heat with the cooling water without increasing the internal pressure to increase the heat exchange efficiency.

The present invention has been made to solve the problems described above, the object of the present invention is the height of the tube formed of the oil cooler provided in the radiator tank, the height of the oil flow, the inner pin height of each tube and It is possible to increase the durability of the oil cooler and transmission by keeping the pressure drop low while securing the assemblability by limiting the singular elements, allowing the oil to flow smoothly, and easily exchange heat with the coolant to increase the overall heat exchange performance. It is to provide a radiator tank and an oil cooler assembly.

Radiator tank and oil cooler assembly 1000 of the present invention is provided in the radiator tank 100 and a pair of hollows formed on one side in a concave shape opened upwards, and the radiator tank 100, spaced apart a certain distance A pair of inlet and outlet bosses 210 and inlet pipes 220 and outlet pipes 230 respectively coupled to the inlet and outlet bosses 210 and the inlet and outlet bosses 210 are coupled to each other. An oil cooler 200 including a tube 240 to form a flow path through which oil flows; In the radiator tank and the oil cooler assembly 1000, the radiator tank and the oil cooler assembly 1000, the inner width (W100) of the radiator tank 100 is formed to 33 to 35 mm, the tube 240 The total height H _{total in} which the tube 240 of the oil cooler 200 is formed in the stacking direction of () is characterized in that formed from 55 to 63% of the inner width (W100) of the radiator tank 100.

In addition, the total height of the oil flow in the stacking direction of the tube 240 is characterized in that it is formed of 43 to 53% of the _total height (H _total ) that the tube 240 is formed.

At this time, the oil cooler 200 is characterized in that the tube 240 is formed in seven stages.

In addition, the oil cooler 200 has an inner pin 250 (INNER-FIN) is formed in the tube 240, the height (H _fin ) of the inner pin 250 is 1.3 to 1.48 mm It is done.

Accordingly, the radiator tank and the oil cooler assembly of the present invention have the advantage of maintaining the pressure drop while ensuring the assembly, the oil flows smoothly, and the heat exchange with the coolant can be easily heat exchanged to increase the overall heat exchange performance.

Hereinafter, the radiator tank and the oil cooler assembly 1000 of the present invention having the features as described above will be described in detail with reference to the accompanying drawings.

2 to 5 is a perspective view, exploded perspective view, AA 'direction cross-sectional view of the radiator tank and oil cooler assembly 1000 according to the present invention. 6 is a cross-sectional view taken along the direction BB ′, and FIG. 6 is a diagram illustrating a heat radiation amount, a weight, and a pressure drop amount according to the height of the inner pin 250 of the radiator tank and the oil cooler assembly 1000 according to the present invention.

Radiator tank and oil cooler assembly 1000 of the present invention, when the inner width (W ₁₀₀ ) of the radiator tank 100 is formed to 33 to 35 mm, the tube 240 of the oil cooler 200 provided therein is The invention relates to the total height (H _total ) to be formed, the total height of the oil flow, the number of stages, and the height (H _fin ) of the inner pin 250, which comprises first the radiator tank and the oil cooler assembly 1000 Each structure is demonstrated.

The radiator tank 100 is a component constituting a radiator together with a core part including a header, a tube, and a fin, and an inlet pipe and an outlet pipe for introducing / exiting cooling water, and having a concave shape opened upward to connect the header. Is formed, the oil cooler 200 is provided therein.

At this time, one side of the radiator tank 100 has a pair of hollow portion 101 is formed so that the inlet pipe 220 and the outlet pipe 230 of the oil cooler 200 protrudes from the inside to the outside. do.

The oil cooler 200 is a pair of inlet and outlet boss portion 210, the inlet pipe 220 and the outlet pipe 230 are coupled to the inlet and outlet boss portion 210 provided a predetermined distance apart, the pair Both ends are coupled to the inlet and outlet boss portion 210 of the tube 240 is formed to form a flow path for the oil flow.

Radiator tank and oil cooler assembly 1000 of the present invention is the inner width (W ₁₀₀ ) of the radiator tank 100 is formed to 33 to 35 mm so that the oil cooler 200 can be easily assembled inside the tank, The total height H _{total in} which the tube 240 of the oil cooler 200 is formed in the stacking direction of the tube 240 is formed to be 55 to 63% of the inner width W ₁₀₀ of the radiator tank 100.

In the present invention, the total height H _{total in} which the tube 240 of the oil cooler 200 is formed is, as shown in the drawing, a tube forming a space in which oil flows in the stacking direction of the tube 240. The height of the bottom tube 240 and the top tube 240 of the 240 is formed, and includes the thickness of the material forming the tube 240.

As shown in FIG. 3, the oil cooler 200 moves the inlet pipe 220 and the outlet pipe 230 in the inward direction (lower surface) of the radiator tank 100, and the hollow part 101. ) Is rotated and fixed to one side surface of the radiator tank 100 (about 90 °), and the total height H _{total in} which the tube 240 of the oil cooler 200 is formed is the radiator tank 100. When it exceeds 65% of the inner width (W100), there is a problem that it is difficult to assemble the oil cooler 200 into the radiator tank 100.

In addition, when the total height (H _total ) at which the tube 240 of the oil cooler 200 is formed is less than 55% of the inner width (W100) of the radiator tank 100, the flow rate of the oil flowing is limited to sufficient oil. There is a problem that hardly exerts cooling performance.

In particular, the oil cooler 200 has a problem that the assembly process is difficult because the inlet pipe 220 and the outlet pipe 230 are formed to increase the height so that oil is introduced into the interior.

Accordingly, the radiator tank and oil cooler assembly 1000 of the present invention increases the assemblability, and the tube of the oil cooler 200 so that the coolant in the radiator and the oil in the oil cooler 200 can be heat exchanged smoothly. It is preferable that the total height H _{total in} which the 240 is formed is 55 to 63% of the inner width W100 of the radiator tank 100.

In addition, the radiator tank and oil cooler assembly 1000 of the present invention is 43 to 53% of the _total height (H _total ) of the tube 240 is formed, the total height of the flow of oil in the stacking direction of the tube 240 is formed. It is preferably formed, the tube 240 is preferably formed in seven stages.

The total height of the oil flow means the sum of the inner heights of the respective tubes 240 forming the oil cooler 200 in the stacking direction of the tubes 240, and forms the oil cooler 200. Since each inner tube 240 is provided with an inner pin 250, the height inside the one tube 240 is the height (H _fin ) of the inner pin 250 provided in the tube 240 (inner). And the total height of the oil flowable may be calculated as the height H _fin x number of the inner pins 250.

Although the total height (H _total ) in which the tube 240 of the oil cooler 200 is formed forms a predetermined region, when the inner height of the tube 240 constituting it is formed differently, the tube 240 is formed. The flow amount of oil flowing inside is also changed, and changes in factors such as heat exchange area have a great influence on the heat exchange efficiency of oil and cooling water.

More specifically, when the height inside the tube 240 is large, the number of stages of the tube 240 constituting the oil cooler 200 may be reduced, and the height between the tubes 240 may be reduced, and the oil and the coolant may be reduced. The contact area of is reduced and heat exchange efficiency may be lowered.

On the contrary, when the height inside the tube 240 is small, the number of rows of the tube 240 may be increased to increase the contact area between the oil and the cooling water. However, when the viscosity of the oil is large according to the temperature due to the large flow resistance of the oil, the oil may be increased. There is a problem that cannot be moved smoothly.

6 is a graph showing the heat dissipation amount, weight, and pressure drop amount as the height of the inner fin 250 of the radiator tank and the oil cooler assembly 1000 according to the present invention is changed.

The heat dissipation amount is an indicator that can indicate the heat exchange performance between the oil and the coolant, and an increase in the heat dissipation means that the heat exchange performance is high.

The weight means the total weight of the oil cooler 200.

The pressure drop amount indicates a reduced pressure value. When the pressure drop amount is large, the oil introduced into the oil cooler 200 cannot be moved smoothly, and thus the pressure drop amount is generally 1.0 bar or less.

In the figure, the pressure drop amount is expressed based on a value measured under an oil flow rate of 10 l / min and a temperature of 120 ° C.

When the height (H _fin ) of the inner pin 250 (height inside the tube 240) is increased, the heat dissipation amount has a certain value to some extent, shows a sharp decline, the weight of the oil cooler 200 It also degrades.

However, the pressure drop amount is gradually increased as the height (H _fin ) of the inner pin 250 is increased.

That is, it can be seen that the heat dissipation amount and the pressure drop amount which have the greatest influence on the heat exchange efficiency and the flow of oil are inversely proportional to each other as the height H _fin of the inner pin 250 increases.

Accordingly, in the present invention, the radiator tank and the oil cooler assembly 1000 of the present invention may maintain oil in the stacking direction of the tube 240 so that the amount of heat dissipation can be properly maintained, and the pressure drop can be satisfied below the regulation value (1.0 bar). The total flowable height is formed from 43 to 53% of the _total height H _total on which the tube 240 is formed, and the tube 240 is formed in seven stages.

When the height H _fin (the height inside the tube 240) of the inner pin 250 satisfies all of the above conditions (the radiator tank 100 has an inner width W100 of 33 to 35 mm). , The total height (H _total ) of the tube 240 of the oil cooler 200 is formed to 55 to 63% of the inner width (W100) of the radiator tank 100, the stacking direction of the tube 240 The total height of the flowable oil is formed to 43 to 53% of the _total height (H _total ), the tube 240 is formed, the tube 240 is formed in seven stages, to be formed from 1.11 to 1.67 mm The radiator tank and the oil cooler assembly 1000 of the present invention may be more preferably formed with a height H _fin of 1.3 to 1.48 mm.

Radiator tank and oil cooler assembly 1000 of the present invention having the features as described above to ensure the assembly, while the oil flows smoothly, can maintain a low pressure drop amount, and easily exchange heat with the cooling water to improve the overall heat exchange performance There is an advantage to increase.

Example 1

Example 1 was directed to the radiator tank and oil cooler assembly 1000 as shown in Figures 2 to 5, more specifically, the radiator tank 100 inner width (W100) is 34 mm, the oil The tube 240 of the cooler 200 is formed in seven stages, the total height (H _total ) of the tube 240 is 19.96 mm, the height (H _fin ) of the inner fin 250 is 1.4 to 1.48 mm.

[Comparative Example]

Comparative Example is formed in the same configuration as in Example 1, the tube 240 of the oil cooler 200 is formed in six stages, the total height (H _total ) of the tube 240 is 23.12 mm, The height H _fin of the inner pin 250 is 1.55.

The results of comparing the heat dissipation amount and the pressure drop amount in the condition of Example 1 and Comparative Example in the actual vehicle mode oil flow rate 12 l / min, temperature 120 ℃ is shown in Table 1 below.

Table 1. Experimental Conditions and Results of Example 1 and Comparative Example

As shown in Table 1, it can be confirmed that Example 1 of the present invention has a high heat dissipation amount and a low pressure drop amount as compared with the comparative example.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1A is a cross-sectional view of a conventional double tube oil cooler and radiator tank assembly.

Figure 1b is a perspective view of a conventional stacked oil cooler.

2 to 5 is a perspective view, an exploded perspective view, a cross-sectional view AA 'direction of the radiator tank and oil cooler assembly according to the present invention. BB 'direction section.

Figure 6 is a view showing the heat dissipation amount, weight, and pressure drop amount according to the inner pin height of the radiator tank and the oil cooler assembly according to the present invention.

DESCRIPTION OF REFERENCE NUMERALS

1000: Radiator Tank and Oil Cooler Assembly

100 radiator tank 101 hollow part

W ₁₀₀ : Radiator Tank Width

200: Oil cooler

210: entrance and exit boss portion 220: inlet pipe

230: outlet pipe 240: tube

250: pin

H _total : Overall height at which the tube is formed

H _fin : height of inner pin

Claims (5)

A radiator tank 100 having a pair of hollow portions 101 formed on one side thereof in a concave shape opened upward, and a pair of inlet / outlet boss portions provided inside the radiator tank 100 and spaced apart from each other by a predetermined distance. (210), the inlet pipe 220 and the outlet pipe 230 are respectively coupled to the inlet and outlet boss portion 210, and both ends are coupled to the inlet and outlet boss portion 210 to form a flow path through which oil flows. In the radiator tank and oil cooler assembly 1000 comprising an oil cooler 200 comprising a tube 240, The radiator tank and the oil cooler assembly 1000 has a width W100 of 33 to 35 mm in the radiator tank 100. The total height (H _total ) of the tube 240 in the stacking direction of the tube 240 is formed of 55 to 63% of the inner width (W100) of the radiator tank 100, Tube 240 of the oil cooler 200 is formed in seven stages, Radiator tank and oil cooler assembly, characterized in that the inner pin (250) (INNER-FIN) having a height (H _fin ) of 1.3 to 1.48 mm is formed inside the tube (240) . The method of claim 1, Radiator tank and oil cooler assembly, characterized in that the total height of the flow of oil in the stacking direction of the tube (240) is 43 to 53% of the _total height (H _total ) is formed. delete delete delete

Images