KR100957442B1 - Intercooler of Automobile for Elevating Cooling Performance - Google Patents

Abstract

The present invention relates to a vehicle intercooler having improved cooling performance, and includes a duct member for recirculating compressed air at a lower portion of the intercooler, and an opening and closing means at an inlet side of the duct member to provide cooling efficiency of the compressed air introduced into the intercooler. This is to be improved.

The present invention and the inlet portion 30 to allow compressed air to flow;

An outlet part 31 through which the compressed air introduced through the inlet part 30 is discharged;

A heat exchanger (40) provided between the inlet portion (30) and the outlet portion (31) to exchange heat with compressed air introduced through the inlet portion (30) to allow cooling;

Part of the compressed air is introduced into the inlet part 30 by the bypass guide member 31a formed in the outlet part 31 of the heat exchange part 40, and then recycled back to the heat exchange part 40. A duct member 50 provided;

The opening and closing means for opening and closing the flow of compressed air at the inlet side of the duct member 50 into which the compressed air is introduced.

The present invention having such a configuration induces the recirculation of the compressed air to improve the heat exchange performance of the compressed air passing through the heat exchange unit, while the opening and closing means are provided in the duct member provided for the compressed air recirculation, the temperature of the compressed air heat exchanged By opening and closing accordingly according to the effect that the cooling efficiency is increased.

Automotive, intercooler, cooling, heat exchange, recirculation, compressed air, supercharging, duct member, opening and closing means, bimetal, motor

Description

Intercooler of Automobile for Elevating Cooling Performance}

The present invention relates to a vehicle intercooler having improved cooling performance, and more particularly, a compression air recirculation duct member is provided under the intercooler, and an opening and closing means is provided at an inlet side of the duct member to provide compression to the interior of the intercooler. It is to improve the cooling efficiency of the air.

In general, the engine of the automobile is operated at a high temperature to keep the engine at an appropriate temperature by circulating the coolant to avoid overheating, the coolant heated while circulating the engine is installed in front of the engine to radiate heat by the vehicle running wind, It is repeated and used to cool the engine by passing it through a cooling radiator.

For this reason, when the radiator heat dissipation cooling performance is lowered, the engine is overheated and high speed movement parts such as bearings and cylinders are sintered or deteriorated, which significantly reduces the durability.

It is very important to maintain.

On the other hand, in recent years, as a high power and high performance of the engine is required, a turbocharger is installed to pressurize the intake air by using the exhaust pressure of the exhaust gas to the diesel engine, and then pressurized intake air is supplied to the combustion chamber.

The turbocharger, in a vehicle using a diesel engine, supplies compressed air into the cylinder of the engine to improve the output of the engine, and includes a turbine that rotates by flow energy of exhaust gas exhausted from the engine. It is connected to the turbine and the rotating shaft and sucks air from the outside and pressurizes the air to supply (charge) the compressed air of high pressure to the cylinder. To increase the output power.

However, when the intake air is compressed and fed by a high-pressure turbocharger, the temperature of the compressed air increases, thereby expanding the volume and decreasing the oxygen density, resulting in a decrease in the filling efficiency in the cylinder and a decrease in output. do.

For this reason, turbocharged engines are usually equipped with an intercooler that cools compressed air to prevent a decrease in oxygen density, thereby increasing cylinder suction efficiency, and improving engine combustion efficiency and fuel efficiency.

The intercooler can be divided into water-cooled and air-cooled according to the cooling method. The water-cooled intercooler cools the intercooler by using the vehicle's coolant or water when cooling the intercooler. However, there is a problem in that maintenance is difficult, and in general, an air-cooled intercooler that uses air to cool the intercooler is often used.

In addition, the conventional intercooler is installed side by side in front of the engine room together with the radiator to radiate and cool using the running wind of the vehicle.In order to increase the output of the vehicle and increase the amount of heat dissipation required, the size of the intercooler and the radiator is conventionally increased. Increasingly solved, the engine room is constraining layout and deepening the structural change of the vehicle, causing cost increase.

Referring to the intercooler cooling apparatus of a general turbocharger engine in more detail with reference to the drawings, as shown in Figure 1, the exhaust gas discharged to the exhaust pipe (2) through the exhaust valve (1) during the exhaust stroke is turbine (3) Is driven and discharged to the outside via the silencer (4). The compressor 6 connected to the turbine 3 by the shaft 5 compresses the air entering through the intake pipe 11 and sends it to the intercooler 7. Compressed air passing through the internal fin tube (not shown) of the intercooler 7 is cooled in the radiator 12 and flows into the cylinder 10 through the intake valve 9 through the intake manifold 8.

However, in such a conventional turbocharger engine, the cooling performance of the intercooler 7 that cools the compressed air is not good, and the compressed air of the engine is not sufficiently cooled. there was.

In order to overcome this problem, as shown in FIG. 2, a casing 13 having an inlet 14 and an outlet 15 outside the radiator 12 is provided along the outside of the radiator 12. There was a device to form a cold air circulation path.

The cooling passage of the air conditioner 16 is connected to the inlet 14 of the cooling circulation path so that the cool air of the air conditioner 16 circulates the intercooler. In addition, one end of the fin tube installed in the intercooler 7 is connected to the intake pipe 11, the other end is connected to the intake manifold 8 connected to the cylinder (10).

Therefore, the compressed air flowing through the fin tube into the intake manifold 8 is cooled to a predetermined temperature while passing through the intercooler 7, and in addition to the natural air cooling by the radiator 12, the cold air of the air conditioner 16 is introduced. Since the radiator 12 of the intercooler 7 is forcedly cooled, the compressed air can be sufficiently cooled.

However, since the cold air of the air conditioner is used, there has been a problem of causing a cost increase.

Accordingly, the present invention has been invented to solve the conventional problems as described above, provided with a compressed air recirculation duct member in the lower portion of the intercooler, and provided with an opening and closing means in the opening of the duct member compression introduced into the intercooler. It is intended to improve the cooling efficiency of the air.

The present invention provides an inlet for allowing compressed air to flow; An outlet for discharging the compressed air introduced through the inlet; A heat exchange part provided between the inlet part and the outlet part to exchange heat with compressed air introduced through the inlet part, thereby allowing cooling; A duct member provided with a part of the compressed air introduced by the bypass guide member formed in the outlet of the heat exchange part to be moved to the inlet part and then recycled back to the heat exchange part; Technical features that the opening and closing means for opening and closing the flow of compressed air is provided on the inlet side of the duct member in which the compressed air is introduced.

Inside the inlet portion is a structure that can be formed a blocking member for guiding the compressed air to be introduced into the tube of the heat exchanger is introduced directly charged.

The opening and closing means includes a fixed plate, an opening and closing member having a shaft rotatably to open and close a through hole formed in the fixed plate, and a bimetal member having one end fixed to open and close the opening and closing member.

The opening and closing member is a structure consisting of a rod coupled to the shaft and the blocking plate is formed on both ends of the rod to open and close the through hole of the fixed plate.

The bimetal member has a structure in which one end thereof is coupled to a fixed member fixed to an inner surface of the duct member, is formed while forming a spiral shape, and joins metal members having different thermal expansion coefficients along the width direction.

The bimetal member is configured to have a large coefficient of thermal expansion as compared to the metal member disposed inside the outer metal member toward the center.

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As described above, the intercooler according to the present invention induces the recirculation of compressed air to improve the heat exchange performance of the compressed air passing through the heat exchanger, while the opening and closing means are provided on the duct member provided for the compressed air recirculation, and the compressed air is heat exchanged. Opening and closing according to the temperature of the effect is to increase the cooling efficiency.

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 of a vehicle according to the present invention, Figure 4 is a cross-sectional view showing an intercooler of a vehicle according to the present invention,

As shown in the figure, the intercooler 20 according to the present invention, the inlet portion 30 to have a space therein to allow the compressed air supplied from the turbocharger, and introduced through the inlet portion 30 An outlet portion 31 is formed through which compressed air is discharged.

The inlet portion 30 and the outlet portion 31 communicate with each other and have a closed structure when viewed from the outside.

In addition, a heat exchanger 40 is provided between the inlet part 30 and the outlet part 31 to allow the compressed air introduced through the inlet part 30 to exchange heat and to be cooled.

The heat exchange part 40 has a structure of a general fin 41 and the tube 42, the compressed air passes through the tube 42 is discharged to the outlet 31.

Here, in the present invention, the lower portion of the heat exchange part 40 is formed to communicate with the duct member 50 to allow a part of the compressed air to be recycled.

As shown in FIG. 4, the duct member 50 communicates with openings 32 and 33 formed in the inlet portion 30 and the outlet portion 31, respectively, and the heat exchange portion is provided in the outlet portion 31. The bypass guide member 31a is formed so that a part of the compressed air that is primarily heat-exchanged from the 40 is not discharged to the outlet portion 31 but is recycled through the duct member 50.

The bypass guide member 31a is installed to supply compressed air re-supplied to the duct member 50 through the opening 32 at an appropriate flow rate, and the bypass guide member immediately at the end of the opening 32. 31a) is preferably formed to protrude so that no dead zone is formed.

In other words, when the dead zone is formed, that is, when the bypass guide member 31a is formed at a position spaced apart from the opening 32, a phenomenon in which the first cooled compressed air temporarily stays at the spaced portion may occur. This is because the compressed air may not be smoothly introduced into the duct member (50).

In addition, the inlet portion 30 may be formed with a blocking member (30a) for guiding the compressed air to be introduced into the tube 42 of the heat exchanger 40 directly to the supercharged inlet. However, the blocking member 30a is preferably formed within a range that does not interfere with the compressed air supplied back to the heat exchanger 40 through the opening 33 through the duct member 50.

In other words, like the bypass guide member 31a, the blocking member 30a is formed to protrude in the horizontal direction at the end of the opening 33 so that the dead zone is not formed.

Here, the present invention is a structure that is further provided with an opening and closing means 60 that can open and close the recirculation flow of the compressed air at the inlet side of the duct member 50 into which the compressed air flows.

 As shown in FIG. 5, the opening and closing means 60 includes an opening member 61 and a shaft 63a rotatably provided to open and close the fixing plate 61 and the through hole 62 formed in the fixing plate 61. And a bimetal member 64 having one end fixed to the opening and closing operation of the opening and closing member 63.

As shown in the figure, the opening and closing member 63 is formed at both ends of the rod 63b coupled to the shaft 63a and the rod 63b to open and close the through hole 62 of the fixing plate 61. It is a structure made of a blocking plate (63c). However, in addition to such a structure, it can be formed in various forms that can open and close the through hole 62 of the fixing plate 61.

The bimetal member 64 has a structure in which one end thereof is coupled to the fixing member 51 fixed to the inner surface of the duct member 50 and is formed while forming a spiral shape, and joining members having different thermal expansion coefficients. In the width direction of the bimetal member 64, two metal members 64a and 64b are formed, and one metal member 64a is higher than the thermal expansion rate of the other metal member 64b.

In addition, the bimetal member 64 may be directly fixed to the inner surface of the duct member 50 without forming the fixing member 51.

In more detail based on the embodiment according to the present invention, the metal member 64b having a relatively low thermal expansion coefficient is disposed inward toward the center portion of the drawing, and the metal member having a relatively large thermal expansion coefficient in the outer direction ( Position 64a). Therefore, when the temperature is higher than or equal to the predetermined temperature, the spiral bimetal member 64 is bent and deformed due to the difference in thermal expansion between the metal members 64a and 64b.

In addition, as another embodiment of the present invention, as shown in Figure 7, the opening and closing means 70 may be configured by electric. That is, the motor 71 is provided on the outer surface of the outlet part 31, and the opening-and-closing member 72 which rotates by the driving force of this motor 71 to open and close the opening part 32 is provided.

In the embodiment according to the present invention, the opening and closing member 72 is made of a substantially square, but can be suitably formed according to the shape of the opening 32 to open and close the opening 32 easily and surely. have.

At this time, when using the opening and closing means 70, it is not necessary to form a separate bypass guide member (31a). When the opening and closing member 72 constituting the opening and closing means 70 is in a position to open the duct member 50, a part of the compressed air collides with the opening and closing member 72 and is discharged to the outlet 31. This is because it is induced to naturally flow into the duct member (50).

In the present invention having such a configuration, compressed air introduced from a conventional turbocharger is introduced through the inlet portion 30 of the intercooler 20 according to the present invention and discharged through the outlet portion 31 via the heat exchanger 40. It is introduced into the cylinder, the compressed air is first cooled by passing through the heat exchange portion 40 in this process, all of the exhaust air is not discharged through the outlet portion 31, a portion of the duct by the bypass guide member 31a It flows into the member 50 and is supplied again to the heat exchange part 40 again.

At this time, since the new compressed air is guided by the blocking member 30a through the inlet portion 30 and introduced into the heat exchanger 40, the first compressed air and the new compressed air are supplied again through the duct member 50. Compressed air is combined and discharged through the outlet part 31, and the mixed air is partially introduced into the duct member 50 and then recycled to repeat the process, thereby improving the cooling performance of the intercooler.

On the other hand, according to the present invention, the opening and closing means 60 is provided at the inlet side of the duct member 50, which is the point where the first compressed air is cooled through the heat exchanger 40, thereby controlling the opening and closing operation according to the temperature of the compressed air. The opening and closing means 60 according to the present invention is rotated by the bimetal member 64 which allows the opening and closing member 63 to move according to the temperature of the compressed air to be heat exchanged, so that the rod 63b is rotated about the shaft 63a. ) Rotates so that the blocking plate 63c formed at both ends of the rod 63b opens and closes the through hole 62 formed in the fixed plate 61 fixed to the inlet side of the duct member 50.

In other words, the opening and closing member 63 is composed of a rod 63b and a blocking plate 63c connected to the shaft 63a fixed to the center of the helical bimetallic member 64 such that the bimetallic member 64 is above a set temperature. In this case, the thermal expansion coefficient formed along the width direction is bent due to the relatively large metal member 64a and the small metal member 64b, and accordingly, the rod 63b rotates about one axis 63a in one direction. The blocking plate 63c opens the through hole 62 of the fixed plate 61, and then a part of the compressed air is introduced into the duct member 50 and recycled.

On the other hand, when the compressed air is lower than the set temperature, the bimetal member 64 returns to its original position, so that the opening / closing member 63 rotates to block the through hole 62 of the fixed plate 61.

In addition, according to the present invention, as the other opening and closing means 70, the motor 71 is installed in the lower portion of the intercooler 20, and the opening and closing member 72 connected to the motor 71 and the shaft 72 to be rotatable. ) Is provided at the end of the opening 32 formed in the outlet 31 of the intercooler 20 to open and close the opening 32.

When the temperature of the compressed air passing through the heat exchange part 40 does not reach the set temperature, the opening and closing means 70 operates the motor 71 to transmit rotational force through the shaft 72 to open and close the opening and closing member 73. By rotating the opening 32 to open the compressed air to the inside of the duct member 50 to be supplied back to the heat exchange unit (40).

At this time, it is not necessary to form the bypass guide member 31a. When the opening and closing member 73 moves to a position to open the duct member 50, the opening and closing member 73 serves as the bypass guide member 31a. Part of the compressed air is to be guided into the duct member (50).

On the other hand, when the temperature of the compressed air passing through the heat exchange part 40 becomes below the set temperature, in other words, when it is not necessary to recycle a part of the compressed air using the duct member 50, the motor 71 again. The opening / closing member 73 may close the inlet side of the duct member 50 by the operation (reverse driving) of the duct member 50.

The motor 71 is capable of forward and reverse driving by controlling the rotation state in accordance with the temperature in the ECU of the vehicle, and thus a detailed description thereof will be omitted.

Although the present invention has been described for the embodiments of the present invention based on the accompanying drawings for convenience, it is obvious that various modifications and changes can be made within the scope of the technical idea of the present invention.

1 is a view showing a conventional turbocharger engine.

2 is a view illustrating a vehicle air conditioner connected to a conventional intercooler.

3 is a perspective view illustrating the intercooler of the present invention.

4 is a longitudinal sectional view of the intercooler of the present invention.

Figure 5 is a perspective view of the opening and closing means according to an embodiment of the present invention, it is to be opened and closed using a bimetal member.

Figure 6 (a) is a view showing a state before the opening and closing means of Figure 5 operates.

Figure 6 (b) is a view showing a closed state by operating the opening and closing means of FIG.

7 is a perspective view showing the appearance of the intercooler equipped with opening and closing means according to another embodiment of the present invention.

8 is a longitudinal cross-sectional view of FIG. 7.

[Code Description of Main Part of Drawing]

20: heat exchanger

30: entrance

30a: blocking member

31: outlet

31a: bypass guide member

32,33: opening

40: heat exchanger

41: pin

42: tube

50: duct member

60: opening and closing means

61: fixed plate

62: through hole

63: opening and closing member

63a: load

63b: Blocking plate

64: bimetal member

64a: metal member

64b: metal member

70: opening and closing means

71: motor

72: opening and closing member

Claims (8)

An inlet 30 through which compressed air is introduced; An outlet part 31 through which the compressed air introduced through the inlet part 30 is discharged; A heat exchanger (40) provided between the inlet portion (30) and the outlet portion (31) to exchange heat with compressed air introduced through the inlet portion (30) to allow cooling; Part of the compressed air is introduced into the inlet part 30 by the bypass guide member 31a formed in the outlet part 31 of the heat exchange part 40, and then recycled back to the heat exchange part 40. A duct member 50 provided; Vehicle intercooler is improved cooling performance, characterized in that the opening and closing means (60) for opening and closing the flow of compressed air is provided on the inlet side of the duct member (50) into which the compressed air flows. The method according to claim 1, Cooling performance is improved in the inlet portion 30 may be formed with a blocking member (30a) for guiding the compressed air to be introduced into the tube 42 of the heat exchanger 40 directly to the supercharged inlet flow Car intercooler. The method according to claim 1, The opening and closing means 60, An opening / closing member 63 provided with a shaft 63a rotatably to open and close the fixed plate 61, the through hole 62 formed in the fixed plate 61, and the opening / closing operation of the opening / closing member 63 The intercooler for the vehicle is improved cooling performance, characterized in that the end is composed of a fixed bimetal member (64). The method according to claim 3, The opening and closing member 63, Cooling comprising a rod (63b) coupled to the shaft (63a) and a blocking plate (63c) formed at both ends of the rod (63b) to open and close the through hole (62) of the fixing plate (61). Car intercooler with improved performance. The method according to claim 3, The bimetal member 64 has one end fixed to an inner surface of the duct member 50, and thus the cooling performance is improved by joining metal members 64a and 64b having different thermal expansion rates along the width direction. Car intercooler. The method according to claim 5, The bimetal member 64 is a vehicle intercooler having improved cooling performance, characterized in that made of a spiral curve. The method according to claim 5 or 6, The bimetal member 64 is a vehicle intercooler with improved cooling performance, characterized in that the metal member (64a) disposed on the outside toward the center has a greater thermal expansion coefficient than the metal member (64b) disposed inside. delete

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