KR20070064940A - Heat exchanger for intercooler of automobile - Google Patents

Abstract

A heat exchanger for an inter cooler of a vehicle is provided to increase an amount of flow and to improve performance of the heat exchanger by providing an enough cross section of an entrance pipe and an exit pipe. A heat exchanger for an inter cooler of a vehicle includes a plurality of tubes(130), a cooling fin(140), an entrance header tank(110), an exit header tank(120), an entrance pipe(160), and an exit pipe(161). The tubes are arranged with a uniform distance. The cooling fin promotes a heat exchange with an air flowing inside the tube by expanding a heat conducting area between the tubes. The entrance and exit pipes are assembled at each ends of the tube. The entrance and exit pipe are formed at the entrance and exit header tank and inflow and outflow the air.

Description

Heat exchanger for intercooler of automobile}

1 is a perspective view showing a conventional heat exchanger for an intercooler,

2 is a side view of FIG. 1;

3 is a perspective view showing a heat exchanger for an intercooler according to a first embodiment of the present invention;

4 is a side view of FIG. 3;

Figure 5a is a comparison of the velocity vector in the outlet header tank in which the outlet pipe is inclined in accordance with the first embodiment of the present invention and the outlet header tank of the conventional outlet pipe at a right angle,

Figure 5b is a comparison of the pressure distribution in the outlet header tank in which the outlet pipe inclined in the outlet pipe according to the first embodiment of the present invention and the outlet header tank of the conventional outlet pipe at a right angle,

6 is a side view showing a heat exchanger for an intercooler according to a second embodiment of the present invention;

Figure 7a is a comparison of the velocity vector in the outlet header tank in which the outlet pipe is inclined and rounded the exit header tank according to the second embodiment of the present invention and the conventional outlet pipe is a right angle,

7B is a view comparing pressure distribution in an outlet header tank in which an outlet pipe is inclined and rounded and an outlet header tank in which a conventional outlet pipe is perpendicular to the outlet pipe according to the second embodiment of the present invention.

<Code Description of Main Parts of Drawing>

100: heat exchanger 110: inlet header tank

111,121: header 112,122: tank

120: outlet header tank 130: tube

140: heat sink fin 150: side support

160: inlet pipe 161: outlet pipe

165 round part

The present invention relates to a heat exchanger for an intercooler of an automobile. More particularly, the inlet and outlet pipes are formed to be inclined with respect to the header tank, thereby reducing the pressure drop of the internal flow air of the heat exchanger, thereby increasing the flow rate and improving the performance of the heat exchanger. It relates to a heat exchanger for an intercooler of a vehicle.

In general, the heat exchanger is installed on a specific flow path to allow the heat exchange medium circulating therein to absorb endothermic heat or to perform heat exchange by radiating its heat to the outside.

Such heat exchangers are manufactured in various ways according to the purpose and purpose of use, such as a condenser and an evaporator using a refrigerant as a heat exchange medium, a radiator using a cooling water as a heat exchange medium, a heater core, and an intercooler using air as a heat exchange medium.

The intercooler of the heat exchanger is installed between the impeller and the intake manifold to serve to cool the supercharged air. In other words, the air charged by the impeller increases the temperature and decreases the rate of increase in air density, which causes knocking or charging efficiency. Therefore, the air charged by the impeller is cooled by using a separate heat exchanger. Supply.

The heat exchanger for the intercooler has an air-cooling type to cool with air received while driving, and a water-cooling type to cool using coolant. In the case of the air-cooling type, as shown in FIGS. 1 and 2, a plurality of tubes 4 are arranged at regular intervals. ), A heat dissipation fin (5) interposed between the tubes (4), inlet and outlet header tanks (2) (3) coupled to both ends of the tube (4), and the inlet and outlet header tanks (2). It is formed in the (3) consists of inlet and outlet pipes (6) (7) for inlet / outlet air.

The heat exchanger (1) for the intercooler passes the air introduced through the inlet pipe (6) into the tube (4) having a large heat transfer area and excellent heat transfer so that heat exchange with the air is rapidly performed to obtain hot air. It cools to a low temperature state and this low-temperature air is discharged through the said outlet pipe (7).

On the other hand, the air operating in the intercooler heat exchanger (1) is operated at a high temperature, high pressure, so that the airflow resistance due to the pressure drop formed on the inlet and outlet pipes (6) (7) side of the heat exchanger (1) is greatly generated Done.

In particular, the inlet and outlet pipes 6 and 7 are formed at right angles (orthogonal to the tube) in the inlet and outlet header tanks 2 and 3 to reduce the pressure drop of the entire heat exchanger 1. It has been a factor to increase, thereby reducing the air flow rate there was a problem of lowering the performance of the heat exchanger (1).

An object of the present invention for solving the above problems is to form an inlet and outlet pipe inclined with respect to the header tank to reduce the pressure drop of the internal flow air of the heat exchanger to increase the flow rate and improve the performance of the heat exchanger To provide a heat exchanger for an intercooler.

The present invention for achieving the above object is a plurality of tubes arranged at a predetermined interval, the heat dissipation fin interposed between the tubes, the inlet, outlet header tanks coupled to both ends of the tube, the inlet, outlet header tank In the heat exchanger for the intercooler of the vehicle formed in the inlet / outlet pipe formed in the inlet / outlet, the at least one of the inlet, outlet pipe is a tube to reduce the pressure drop of the internal air flow of the heat exchanger It is characterized by being formed to be inclined 15 to 20 ° relative to the vertical line perpendicular to the.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view showing an intercooler heat exchanger according to a first embodiment of the present invention, FIG. 4 is a side view of FIG. 3, and FIG. 5A is an outlet header tank having an inclined outlet pipe according to a first embodiment of the present invention. And FIG. 5b shows a comparison of a velocity vector in an outlet header tank in which a conventional outlet pipe is perpendicular to each other. FIG. 5b illustrates an outlet header tank in which an outlet pipe is inclined at right angles according to the first embodiment of the present invention. This figure compares the pressure distribution in the header tank.

As shown, the heat exchanger 100 for the intercooler according to the first embodiment of the present invention, a plurality of tubes 130 arranged at a predetermined interval, and interposed between the tubes 130 to increase the heat transfer area M. heat dissipation fin 140 to promote heat exchange with the air flowing through the tube 130, inlet and outlet header tanks 110 and 120 coupled to both ends of the tube 130, and the inlet and outlet headers. It is formed in the tank 110, 120 is composed of inlet, outlet pipes 160, 161 for inlet / outlet air.

In addition, the side supports 150 are installed at both ends of the tube 130 and the heat dissipation fins 140 so as to prevent deformation of the tube 130 and the heat dissipation fins 140 at both ends of the inlet and outlet header tanks 110 and 120. do.

In addition, the inlet and outlet header tanks 110 and 120 are coupled to both ends of the tube 130 and the headers 111 and 121 and coupled to one side of the headers 111 and 121 to provide a closed passage. It consists of tanks 112 and 122 to form.

In the intercooler heat exchanger 100, at least one of the inlet and outlet pipes 160, 161 and the tube 130 to reduce the pressure drop of the internal flow air of the heat exchanger (100) It is preferably formed to be inclined 15 to 20 degrees with respect to the perpendicular perpendicular line (a).

Here, the inlet and outlet pipes 160 and 161 are formed to be inclined outward of the heat exchanger 100.

In the present invention, both the inlet and outlet pipes 160 and 161 are formed to be inclined 15 to 20 degrees, but only one of the inlet pipe 160 and the outlet pipe 161 may be inclined.

If the inclination angle of the inlet and outlet pipes 160 and 161 is smaller than 15 °, the effect of reducing the pressure drop is insignificant, and if the inclination angle of the inlet and outlet pipes 160 and 161 is greater than 20 °, the installability of the heat exchanger 100 is reduced.

5A and 5B show a comparison of a velocity vector and a pressure distribution on an outlet header tank side and a conventional outlet header tank side of the present invention. As shown, conventionally, an outlet pipe (conventionally known as 7 :) is formed at right angles. Therefore, it can be seen that a large pressure drop is generated at the intersection point of the outlet header tank (3: conventional) and the outlet pipe (7: conventional), and it is difficult to secure the cross-sectional area of the outlet pipe (7: conventional). It can be seen that the air flow rate is faster.

On the other hand, in the present invention, since the outlet pipe 161 is formed to be inclined 15 to 20 degrees, the air flow shape is improved to be relatively small (uniformly) above and downstream of the intersection point of the outlet header tank 120 and the outlet pipe 161. It can be seen that the pressure drop, and also the passage cross-sectional area can be secured, the air flow rate in the outlet pipe 161 is slower than the conventional.

Therefore, in the present invention, the total pressure drop in the entire heat exchanger 100 is reduced by about 42 to 50% compared to the conventional art, and the passage cross-sectional area of the outlet pipe 161 can be secured by the inclined structure, thereby increasing the flow rate. The performance of the heat exchanger 100 is to be improved.

On the other hand, in the above, although the comparison between the conventional and the present invention on the inlet header tank 110 side has not been compared, the comparison between the velocity vector and the pressure distribution on the outlet header tank 120 side of the conventional and the present invention described above is sufficient. You will see the effect.

Figure 6 is a side view showing a heat exchanger for an intercooler according to a second embodiment of the present invention, Figure 7a is an outlet pipe inclined and rounded outlet pipe tank according to a second embodiment of the present invention and a conventional outlet pipe at a right angle Figure 7b is a comparison of the velocity vectors in the inlet header tank, Figure 7b is an outlet header tank in which the outlet pipe inclined and rounded the outlet pipe according to the second embodiment of the present invention and the conventional outlet pipe at a right angle As a figure comparing the pressure distribution, only parts different from the above-described first embodiment will be described.

As shown, in the second embodiment, the inlet and outlet pipes 160 and 161 are formed to be inclined by 15 to 20 ° with respect to the inlet and outlet header tanks 110 and 120, as in the first embodiment. At this time, the round portion 165 is formed at the intersection of the inlet and outlet header tanks 110 and 120 and the inlet and outlet pipes 160 and 161.

It is preferable that the radius R of the round part 165 is 10 to 15 mm.

If the radius R of the round part 165 is less than 10 mm, the effect of reducing the pressure drop is insignificant, and if the radius R is greater than 15 mm, the manufacturability of the heat exchanger 100 is inferior.

7A and 7B show a comparison of the velocity vector and the pressure distribution at the outlet header tank side and the conventional outlet header tank side of the present invention. As shown, conventionally, the outlet pipe 7 (conventional) and the outlet header tank 3 are shown. Since the intersection point of the (conventional) is formed at right angles without the rounding process, it can be seen that a large pressure drop is generated above and downstream of the intersection of the outlet header tank (3: conventional) and the outlet pipe (7: conventional). In addition, it is difficult to secure the cross-sectional area of the passage, which indicates that the air flow velocity is increased in the exit pipe (conventionally known).

On the other hand, in the present invention, since the intersection point of the outlet pipe 161 and the outlet header tank 120 is rounded to a radius R of 10 to 15 mm, the air flow form is improved to improve the outlet header tank 120 and the outlet pipe. It can be seen that a relatively small (uniform) pressure drop is shown above and downstream of the intersection point 161, and the passage cross-sectional area can be secured, so that the air flow rate in the outlet pipe 161 is slower than before.

Therefore, in the present invention, the total pressure drop in the entire heat exchanger 100 is reduced by about 45 to 50% compared to the conventional art, and the passage cross-sectional area of the outlet pipe 161 can be secured by the inclined structure and the round part 165. As the flow rate increases, the performance of the heat exchanger 100 may be improved.

As described above, in the present invention, when the inlet and outlet pipes 160 and 161 are inclined at the inlet and outlet header tanks 110 and 120, the structure is applied to the intercooler of the heat exchanger 100. Although only described, the present invention is not limited thereto, and the same can be applied to all heat exchangers such as a radiator, a condenser, an evaporator, a heater core, and the same effect can be obtained.

As described above, according to the present invention, the inlet and outlet pipes are formed to be inclined with respect to the inlet and outlet header tanks, and a round part is formed at the intersections, whereby the pressure drop of the internal flow air of the heat exchanger is reduced, The passage cross-sectional area of the pipe is secured, increasing the flow rate and improving the performance of the heat exchanger.

Claims (3)

A plurality of tubes 130 arranged at a predetermined interval, the heat dissipation fin 140 interposed between the tubes 130, and the inlet and outlet header tanks 110, 120 coupled to both ends of the tube 130 And, in the inlet and outlet header tanks (110, 120) formed in the heat exchanger for the intercooler of the vehicle comprising an inlet, outlet pipe (160, 161) for inlet / outlet air, At least one of the inlet and outlet pipes 160 and 161 is 15 to 20 based on a vertical line a perpendicular to the tube 130 to reduce the pressure drop of the internal flow air of the heat exchanger 100. The heat exchanger for the intercooler of the vehicle, characterized in that formed inclined. The method of claim 1, Heat exchanger for an intercooler of a vehicle, characterized in that the round portion 165 is formed at the intersection of the inlet and outlet header tanks (110) (120) and the inlet and outlet pipes (160, 161). The method of claim 2, Radius (R) of the round part 165 is 10 to 15mm, characterized in that the heat exchanger for a vehicle.

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