JPH0245473Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to an intercooler for a supercharger, and more specifically, an intercooler for a supercharger to cool air sent from a supercharger to an engine. Regarding.

In this specification, the top, bottom, left and right of FIG.
They are respectively referred to as upper and lower, and left and right.

Issues with conventional technology and ideas Superchargers, which recover power from engine exhaust gas and use that power to pressurize combustion air, are increasingly being used because they increase engine output and improve fuel efficiency. There is. Air pressurized by such a supercharger is adiabatically compressed, and its temperature rises due to internal heat generation. For example, if air at 40°C is compressed from atmospheric pressure to a gauge pressure of 0.6 kg/cm ² , the temperature will be 83.4°C. Fuel is mixed with the air exiting the supercharger and supplied to the engine, but the high temperature of the air tends to cause overheating, oil deterioration, etc. Therefore, a cooling device including an intercooler is used to lower the temperature of the air supplied to the engine to prevent engine overheating, and to increase the air density and intake amount to the engine. There is.

Conventionally, the intercooler used is one in which air sent from a supercharger and water exchange heat. The water, whose temperature has increased by absorbing heat from the air, is cooled by a radiator provided in the cooling device, and a sealed water circulation circuit is formed between the intercooler and the radiator. By the way, since the cooling water used to cool the air is heated and expanded while passing through the intercooler, conventionally, the reservoir tank for absorbing this expansion was separate from the outlet side header tank. It is set in. However, in the case of an automobile engine, the space to store such a cooling device is small, so the entire cooling device needs to be made compact, but if a reservoir tank is provided separately from the outlet side header tank, The problem is that it cannot be made compact.

This invention was made in view of the above-mentioned circumstances, and an object thereof is to provide an intercooler that can make the entire cooling device compact.

Means for Solving the Problems The intercooler for a supercharger according to this invention has an inlet header tank and an outlet header tank arranged at a predetermined interval in the left-right direction, and a predetermined interval vertically between both header tanks. Consisting of a plurality of cooling water distribution hollow bodies arranged in parallel and extending in the left and right direction, both ends of which are connected to both header tanks, respectively, and located at a height above the upper end of the cooling water distribution hollow body in the outlet side header tank. A cooling water expansion absorption space is provided in the outlet side header tank, a cooling water sealing port is provided in a portion of the peripheral wall of the outlet side header tank that surrounds the cooling water expansion absorption space, and a cap with a pressure release valve is provided at the cooling water filling port. is installed so that cooling water flows linearly from the inlet side header tank to the outlet side header tank through the hollow body for cooling water circulation.

In the above, it is preferable to provide an air vent pipe for releasing residual air when the pressure release valve opens.

Function: According to the intercooler of this invention, the cooling water expansion absorption space is provided at a height above the upper end of the cooling water circulation hollow body in the outlet side header tank. In a cooling device including the above, there is no need to separately provide a reservoir tank for cooling water expansion absorption, and the number of parts can be reduced and the entire device can be made compact. In addition, a cooling water sealing port is provided in a portion of the peripheral wall of the outlet side header tank that surrounds the space for cooling water expansion absorption, and a cap with a pressure release valve is attached to the cooling water filling port.
When the cooling water expands, the compressed air escapes to the atmosphere through the open valve. Further, if the intercooler is provided at the upper end of the cooling device, cooling water can be easily supplied. Furthermore, since the cooling water flows in a straight line from the inlet side header tank to the outlet side header tank through the hollow body for cooling water distribution, there is little resistance during the flow of the cooling water, and the cooling water flows smoothly. .

Embodiments Hereinafter, embodiments of this invention will be described with reference to the drawings.

FIG. 1 shows the entire cooling device for cooling water sent from a supercharger (not shown). The cooling device includes an intercooler 1 consisting of an airtight heat exchanger, and a radiator 2 equipped with a blower fan 3.
and a water circulation hollow body 4 consisting of a rubber hose or the like that circulates water between the intercooler 1 and the radiator 2;
It consists of a pump 5 that is placed in the middle of the water circulation circuit 4 and pumps water. The intercooler 1 is provided with an inlet 6 for introducing air from a supercharger and an outlet 7 for supplying air to an engine (not shown). In the intercooler 1, air flows as shown by arrow A, and cooling water flows from left to right in FIG.
The intercooler 1 is arranged at the upper end of the cooling device.

In the cooling device having such a configuration, the cooling water is circulated in the direction shown by arrow B by the pump 5. The heat of the air, which has been pressurized by the supercharger and whose temperature has increased, is absorbed by the cooling water while passing through the intercooler 1, and the temperature of the air decreases. Cooling water whose temperature has increased by taking heat from the air is sent to radiator 2
The heat is then radiated here.

As shown in FIGS. 2 and 3, the intermediate cooling water 1 has an inlet header tank 10 and an outlet header tank 11 arranged at a predetermined interval in the left-right direction, and a plurality of cooling water passages 8a, A plurality of flat tubes 8 (hollow bodies for circulating cooling water) are arranged in parallel at predetermined intervals in the vertical direction, and both ends are connected to the inlet header tank 10 and the outlet header tank 11, respectively, and adjacent flat tubes 8 Louvered corrugated fins 9 are provided between the tubes 8 and on the upper surface of the flat tube 8 at the upper end and the lower surface of the flat tube 8 at the lower end. A water circulation circuit 4 is connected to the header tanks 10 and 11 via a socket 12. The outlet header tank 11 has a larger volume than the inlet header tank 10, and a cooling water expansion absorption space 13 is provided in the outlet header tank 11 at a height above the flat ring 8 at the upper end. . Further, a cooling water sealing port 14 is provided at the upper end of a portion of the peripheral wall of the outlet side header tank 11 that forms the periphery of the cooling water expansion and absorption space 13, which communicates the inside of the tank 11 with the outside. Cooling water inlet 1
4 is formed by a short cylindrical cap receiving member 16 whose lower end is inserted into a hole 15 made in the upper wall of the header tank 11 and welded to the upper wall of the header tank 11. A cap 17 with a pressure release valve is placed over the upper opening of the cap receiving member 16. The pressure release valve includes a shaft 18 fixed to the center of the lower surface of the cap 11 in a downwardly protruding manner, a disc-shaped valve body 19 fitted onto the shaft 18 so as to be able to move vertically, and a connection between the valve body 19 and the lower surface of the cap 16. A push spring 20 is disposed between the valve body 19 and urges the valve body 19 downward. The lower end portion of the cap receiving member 16 is reduced in diameter, and this reduced diameter portion is inserted into the hole 1. The peripheral edge of the valve body 19 normally comes into contact with a stepped portion between the reduced diameter portion and other portions on the inner surface of the cap receiving member 16, thereby closing the lower end opening of the cap receiving member 16. Further, the peripheral wall of the cap receiving member 16 is provided with an expansion absorption space 1 when the valve body 19 is raised.
An air vent pipe 22 is attached to communicate the air vent 3 with the outside.

The cooling water passes through the flat tube 8 and flows linearly from the inlet header tank 10 to the outlet header tank 11. Then, while passing through the flat tube 8,
The cooling water removes heat from the air, which has been pressurized by the supercharger and whose temperature has risen, causing its temperature to rise and its volume to expand. The expansion of the cooling water is absorbed by the expansion absorption space 13. At this time, the pressure of the compressed air in the space 13 increases, so the valve body 19 is raised against the biasing force of the push spring 20.
The air is discharged to the outside from the air vent pipe 22. Further, when the expansion of the cooling water cannot be absorbed by the space 13, the cooling water is also discharged from the air vent pipe 22.

Effects of the invention According to the intercooler for a supercharger of this invention, as described above, there is no need to provide a separate reservoir tank, so the number of parts can be reduced and the entire cooling device can be made compact. be able to. Further, when the cooling water expands, the air existing in the cooling water expansion absorption space escapes to the outside through a pressure release valve of a cap with a pressure release valve attached to the cooling water sealing port. Further, if the intercooler is provided at the upper end of the cooling device, cooling water can be easily supplied through the cooling water sealing port. Furthermore, since the cooling water flows in a straight line from the inlet side header tank to the outlet side header tank through the hollow body for cooling water distribution, there is little resistance during the flow of the cooling water, and the cooling water flows smoothly. . Therefore, cooling efficiency is improved.

[Brief explanation of drawings]

The drawings show an embodiment of this invention, and FIG. 1 is a diagram showing the entire cooling device equipped with an intercooler, FIG. 2 is an enlarged cross-sectional view along the - line in FIG. 1, and FIG. This is a view taken along the - line in the figure. 1...Intercooler, 8...Flat tube (hollow body for cooling water distribution), 10...Inlet side header tank, 11
... Outlet side header tank, 13 ... Cooling water expansion absorption space, 14 ... Cooling water sealing port, 17 ... Cap with pressure release valve.

Claims (1)

[Scope of utility model registration request] An inlet header tank 10 and an outlet header tank 11 are arranged at a predetermined interval in the left and right direction.
and a plurality of cooling water circulation hollow bodies 8 extending in the left-right direction, arranged in parallel at a predetermined distance vertically between both header tanks 10 and 11, and having both ends connected to both header tanks 10 and 11, respectively. A cooling water expansion absorption space 13 is provided at a height above the upper end of the cooling water circulation hollow body 8 in the outlet side header tank 11, and the cooling water expansion absorption space 13 on the peripheral wall of the outlet side header tank 11 is Cooling water inlet 1 in the part that forms the surrounding area
A cap 17 with a pressure release valve is attached to the cooling water sealing port 14, and the cooling water passes through the cooling water circulation hollow body 8 to the inlet side header tank 1.
0 to the outlet side header tank 11 in a straight line.