JP3831030B2 - Vehicle heat exchanger - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle heat exchanger such as an intercooler, an evaporator, a condenser, and a radiator used in a vehicle or the like, for example, a vehicle heat exchanger that is optimal as an intercooler used in an engine system having a supercharger.
[0002]
[Prior art]
Various heat exchangers are used in vehicles. For example, with regard to the intercooler, in the case of FF vehicles, which are currently mainstream in the field of small and medium-sized passenger cars, the engine is placed horizontally in the engine room, so the intercooler is located above or behind the engine. It is arranged on the side.
[0003]
By the way, when the engine is driven, it constantly vibrates due to combustion of the air-fuel mixture in the combustion chamber. Further, vibration caused by traveling is also applied during traveling of the vehicle. Accordingly, the connecting portion between the introduction / extraction tank of the intercooler and the introduction / extraction pipe and the introduction / extraction pipe itself are required to have strength and durability against vibrations. For this reason, for example, the pipes are made thicker or the brazing strength of the connecting portion between the pipe and the tank is increased.
[0004]
[Problems to be solved by the invention]
However, if the intercooler is disposed on the engine, for example, on the upper side or the rear side of the vehicle, and the anti-vibration measures as described above are provided at the connection portion, the tank can be used even when the vehicle collides from the front. Since the strong connection between the pipe and the pipe is maintained, for example, the intercooler main body other than the pipe or the like may enter the driver's cab.
[0005]
An object of the present invention is to ensure the strength against vibrations and the like required for the connection portion, etc., and to reliably prevent the vehicle heat exchanger from entering the driver's cabin at the time of a collision, etc. The object is to provide a vehicular heat exchanger that can be further improved.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, a heat exchanger for a vehicle according to the present invention is heat-exchanged by an introduction pipe for introducing a fluid, an introduction tank to which the introduction pipe is connected, a heat exchange unit, and the heat exchange unit. In the vehicle heat exchanger that is provided in the engine room and has a lead-out tank that collects the fluid and a lead-out pipe that leads out the fluid, the strength of at least one of the introduction tank and the lead-out tank Is lower than the strength of the connection portion between the introduction tank and the introduction pipe and / or the connection portion between the lead-out tank and the lead-out pipe.
[0007]
In order to set the strength of the at least one tank lower than the strength of at least one connecting portion, for example, the thickness of at least a part of the wall on the pipe side of at least one tank is compared with other parts of the wall. And thin. For example, it can be easily processed by cutting the inner surface and / or the outer surface of the wall.
[0008]
In order to solve the above-described problem, another vehicle heat exchanger according to the present invention includes an introduction pipe for introducing a fluid, an introduction tank to which the introduction pipe is connected, a heat exchange unit, and the heat exchange. In the vehicle heat exchanger provided in the engine room, having a lead-out tank for collecting the fluid heat-exchanged by the section and a lead-out pipe for leading out the fluid, the connection between the introduction pipe and the introduction tank The strength of at least one of the connecting portions of the section and the outlet pipe and the outlet tank is lower than the strength of the tank of the introduction tank and / or outlet tank.
[0009]
In order to make the strength of at least one of the connecting portions lower than the strength of at least one tank, for example, when a pipe and a tank are brazed, the brazing strength of the tank is reduced. What is necessary is just to make it lower than intensity | strength. Specifically, the area of a part of the pipe connection portion of the tank in at least one of the connection portions may be reduced.
[0010]
In addition, the connection method of a pipe and a tank is not limited to brazing, The optimal method can be selected suitably from other well-known connection methods.
[0011]
The vehicle heat exchanger according to the present invention can reliably eliminate the possibility of entering the driver's cab during a collision or the like even when the vehicle heat exchanger is disposed above or behind the vehicle.
[0012]
In addition, the vehicle heat exchanger according to the present invention is not particularly limited, and examples thereof include an intercooler, an evaporator, a condenser, a radiator, and the like. It is preferable to apply to an intercooler that is often installed.
[0013]
In the vehicle heat exchanger as described above, the strength of at least one of the tanks is lower than the strength of at least one of the connection portions. For example, when an excessive impact is applied from the outside due to a collision or the like. First, the low-strength tank is destroyed. In the other vehicle heat exchanger, the strength of at least one of the connection portions is lower than the strength of at least one of the tanks. Destroyed.
[0014]
In other words, in the vehicle heat exchanger of the present invention, when an excessive impact is applied from the outside due to a collision or the like, the low strength portion is first destroyed, so the impact is effectively prevented by the destruction. Absorbed. Further, the vehicle heat exchanger falls off from a predetermined arrangement position due to the destruction, or a predetermined posture is impaired. Therefore, the vehicle heat exchanger is reliably prevented from entering the driver's cab, and the safety of the driver and the like can be ensured.
[0015]
Note that the strength of the tank and the connecting portion in the present invention is set to be low in relation to the strength of the comparison portion. Therefore, the strength originally required for the tank and the connecting portion can be sufficiently secured.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a heat exchanger for a vehicle according to the present invention will be described with reference to the drawings. In the following embodiments, the case where the vehicle heat exchanger is an intercooler is shown.
1 to 3 show a case where an engine system using an intercooler according to a first embodiment of the present invention is applied to an automobile. In the figure, reference numeral 1 denotes an intercooler. The intercooler 1 includes an intercooler body 2 having a cooling heat exchange section 3, an introduction tank 4, and a lead-out tank 5, an introduction pipe 6, and a lead-out pipe 7.
[0017]
Connected to the introduction tank 4 is an introduction pipe 6 for introducing the supercharged intake air from the turbocharger in the system to the intercooler body 2 and further to the engine 8. The intake air introduced into the introduction tank 4 is cooled by the cooling heat exchanging unit 3 and then gathers in the lead-out tank 5 and passes through the lead-out pipe 7 connected to the lead-out tank 5 in the intake manifold 9 of the engine 8. Into the combustion chambers (not shown) of the engine 8.
[0018]
In this embodiment, the intercooler 1 is disposed obliquely above the engine 8 with respect to the engine 8 and on the vehicle rear side, that is, on the cab 10 side.
[0019]
A connection portion 11 between the introduction tank 4 and the introduction pipe 6 and a connection portion 12 between the lead-out tank 5 and the lead-out pipe 7 are brazed. In the present embodiment, the strength of the tanks 4 and 5 is lower than the strength of the connecting portions 11 and 12. Specifically, thin walls are formed on the pipe-side walls 13 and 14 of the tanks 4 and 5. The thin portion is formed so that a part of the walls 13 and 14 is thinner than other portions of the walls 13 and 14. In the present embodiment, the thin portion surrounds the pipes 6 and 7. It consists of 15. In the present embodiment, the concave portion 15 is formed in an annular shape, but is not limited to this. The concave portion 15 can also be formed from a plurality of concave portions.
[0020]
That is, in this embodiment, the strength of the tanks 4 and 5 is set to be lower than the strength of the connection portions 11 and 12 by providing the concave portions 15 on the walls 13 and 14. Therefore, at the time of a collision or the like, the tanks 4 and 5 are first destroyed and the impact is effectively absorbed. Moreover, the predetermined support attitude | position of the intercooler 1 is impaired by this destruction. Therefore, it is possible to reliably prevent the intercooler 1 from entering the cab 10. Moreover, since the process (for example, cutting, pressing) which provides the concave-shaped part 15 in the walls 13 and 14 can be performed very easily, there is no possibility that a significant cost increase will be caused. It can also be easily applied to existing intercoolers.
[0021]
Further, in the present embodiment, the strength of the tanks 4 and 5 is set lower than that of the connecting portions 11 and 12, so that the strength of the intercooler 1 as a tank is sufficiently ensured.
[0022]
In this embodiment, the strengths of both tanks 4 and 5 are set lower than the strengths of the connecting portions 11 and 12, but the strength of one of the tanks is set higher than the strength of any one of the connecting portions. If it is made lower, the object of the present invention can be achieved.
[0023]
4 and 5 show an intercooler according to a second embodiment of the present invention. In the present embodiment, the peripheral edge portions 16 and 17 of the pipe insertion hole forming portions of the walls 13 and 14 of the tanks 4 and 5 are thinner than other portions. For this reason, the brazing area of the outer peripheral surfaces of the pipes 6 and 7 and the walls 13 and 14 is small, and the strength of the connecting portions 11 and 12 is set lower than the strength of the tanks 4 and 5.
[0024]
In the present embodiment, when an excessive stress is applied from the outside due to a collision or the like, the connecting portions 11 and 12 are first destroyed. The impact is effectively absorbed by the destruction. Moreover, the intercooler 1 falls off from a predetermined arrangement position due to the destruction. Accordingly, it is possible to reliably prevent the intercooler 1 from entering the cab 10.
[0025]
Moreover, in this embodiment, although the perimeter of the peripheral parts 16 and 17 is made thin, you may make a part thin and make brazing area small.
[0026]
Further, in the present embodiment, the strength of the connecting portions 11 and 12 is set lower than the strength of the tanks 4 and 5 to be compared, and therefore the strength against vibrations and the like required for the connecting portions 11 and 12. Is sufficiently secured.
[0027]
In this embodiment, the strength of the connecting portions 11 and 12 is set lower than the strength of the tanks 4 and 5, but the strength of any one of the connecting portions is lower than the strength of any one of the tanks. If it does so, since said effect | action will be exhibited, the approach into the cab 10 of the intercooler 1 can be prevented reliably.
[0028]
【The invention's effect】
As described above, when the vehicle heat exchanger according to the present invention is used, the vehicle heat exchanger is allowed to enter the driver's cab at the time of a collision, etc., while ensuring the strength against vibrations and the like required for the connection portion. This can prevent the safety of the driver and the like.
[Brief description of the drawings]
FIG. 1 is a partial plan view of an engine system to which an intercooler according to a first embodiment of the present invention is applied.
2 is a partial cross-sectional view of a tank of the intercooler of FIG.
FIG. 3 is a plan view of a tank of the intercooler of FIG.
FIG. 4 is a partial cross-sectional view of an intercooler tank according to a second embodiment of the present invention.
FIG. 5 is a plan view of the tank of the intercooler of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Intercooler 2 Intercooler main body 3 Cooling heat exchange part 4 Introducing tank 5 Deriving tank 6 Introducing pipe 7 Deriving pipe 8 Engine 9 Suction manifold 10 Cabs 11, 12 Connection parts 13, 14 Wall 15 Concave parts 16, 17 Peripheral part

Claims (7)

An introduction pipe for introducing a fluid, an introduction tank to which the introduction pipe is connected, a heat exchange unit, a derivation tank for collecting the fluid heat-exchanged by the heat exchange unit, and a derivation pipe for deriving the fluid And a vehicle heat exchanger disposed in the engine room, wherein the strength of at least one of the introduction tank and the lead-out tank is such that the connection between the lead-in tank and the lead-in pipe and / or the lead-out tank The heat exchanger for vehicles characterized by being lower than the intensity | strength of the connection part of a lead pipe. 2. The vehicle according to claim 1, wherein a wall thickness of at least a part of at least one of the wall on the introduction pipe side of the introduction tank and the wall on the lead-out pipe side of the lead-out tank is formed thinner than the other part of the wall. Heat exchanger. An introduction pipe for introducing a fluid, an introduction tank to which the introduction pipe is connected, a heat exchange unit, a derivation tank for collecting the fluid heat-exchanged by the heat exchange unit, and a derivation pipe for deriving the fluid In the vehicle heat exchanger disposed in the engine room, the strength of at least one of the connection portion between the introduction pipe and the introduction tank and the connection portion between the lead-out pipe and the lead-out tank is determined by the introduction A vehicle heat exchanger characterized by being lower in strength than the tank and / or the tank of the outlet tank. The vehicle heat exchanger according to claim 3, wherein the pipe and the tank in the at least one connection portion are connected by brazing, and the brazing strength is lower than the strength of the tank. 5. The vehicle according to claim 3, wherein an area of at least a part of the pipe connection portion of the tank in at least one of the connection portion between the introduction tank and the introduction pipe and the connection portion between the lead-out tank and the lead-out pipe is reduced. Heat exchanger. The vehicle heat exchanger according to any one of claims 1 to 5, wherein the vehicle heat exchanger is arranged above or behind the engine. The vehicle heat exchanger according to claim 1, wherein the vehicle heat exchanger is an intercooler.

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