JPH0547345U - Radiator for boiling cooling system - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the boiling cooling system. A downflow radiator 31 having a core tube arranged vertically is used in a boiling cooling device for cooling an engine by boiling the coolant in a water jacket of the engine and utilizing boiling heat transfer.
In the upper tank 14, the coolant inlet 32 is formed, while in the lower tank 15, the coolant outlet 33 is formed.
Is provided and the upper tank 14 is provided with a deflector plate 34 for colliding the coolant flowing from the coolant inlet port 32 with the side wall, and the gas-liquid separated gas-phase coolant and the liquid-phase coolant are respectively separated into the core tubes 16a, 1
A partition plate 35 for flowing from 6b to the lower tank 15 is provided, and the coolant flowing from the inflow port 32 of the upper tank 14 is caused to collide with the side wall of the upper tank 14 by the drift plate 34, thereby performing gas-liquid separation.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a radiator for a boiling cooling device used for cooling an automobile engine, for example.

[0002]

[Prior Art]

 In recent years, in engines for automobiles and the like, higher output has been promoted by using a supercharger or using a multi-valve intake / exhaust system. As a result, the amount of heat generated during operation is significantly higher than that of the conventional one, and a high-performance cooling device is also required.

The boiling cooling device was developed in response to such a demand, and FIG. 5 shows the entire structure of the boiling cooling device.

As shown in FIG. 5, a coolant jacket (coolant) inlet 6 is formed in the water jacket 3 on the cylinder block 2 side of the engine 1, and a coolant outlet 6 is formed in the water jacket 5 on the cylinder head 4 side. 7 are formed. The inflow port 6 is connected to the radiator 8 by a circulation path 10 via a circulation pump 9, and the outflow port 7 is connected to the radiator 8 by a circulation path 10 via a gas-liquid separator 11. The gas-liquid separator 11 separates the liquid-phase coolant and the gas-phase coolant and guides only the gas-phase coolant to the radiator 8. The liquid-phase coolant is sent to the water jacket 3 without passing through the radiator 8. In the figure, 12 is a reserve tank that stores the coolant that overflows from the circulation path 10 during warm-up, and 13 is an electric fan that forcibly sends cooling air to the radiator 8 according to the temperature of the coolant and the like.

FIG. 6 shows a conventional downflow type radiator used in a boiling cooling apparatus.

As shown in FIG. 6, a large number of core tubes 16 are provided vertically between a pair of upper and lower tanks 14 and 15, and a corrugated fin for heat dissipation is provided between the core tubes 16. 17 are provided. An inflow pipe 18 having a coolant inflow port is connected to one of the upper tanks 14, and an outflow pipe 19 having an outflow port of the condensed and liquefied coolant is connected to the other of the other lower tanks 15. Radiator hoses 20 and 21 are mounted on the outflow pipe 18 and the outflow pipe 19, respectively.

In the boiling cooling device described above, the heat of the cylinder head 4 is absorbed by utilizing the boiling heat transfer of the coolant that has boiled in the water jacket 5, and the coolant that has boiled to become vapor is separated into the gas-liquid separator 11 Separate into liquid-phase coolant and gas-phase coolant. Then, the gas-phase coolant is introduced into the radiator 8 and condensed and liquefied while flowing through the core tube 16 of the radiator 8. The liquefied coolant is further cooled and sent to the water jacket 3 by the circulation pump 9.

The boiling cooling device has a higher cooling efficiency than a cooling device that circulates cooling water at a temperature below the boiling point, and a small amount of coolant may be circulated.

[0009]

[Problems to be solved by the device]

 In the above-mentioned boiling cooling device, in order to efficiently perform the condensation cooling, the gas-liquid separator 11 is arranged on the upstream side of the radiator 8 and the coolant is separated into the gas-phase coolant and the liquid-phase coolant, and only the gas-phase coolant is provided. It is flowing into the radiator 8. Therefore, there is a problem that the device configuration becomes complicated and the cost becomes high.

The present invention solves such a problem, and an object of the present invention is to provide a radiator having a gas-liquid separation function, and to simplify a boiling cooling device.

[0011]

[Means for Solving the Problems]

 The radiator for a boil cooling device of the present invention for achieving the above object is used in a boil cooling device for cooling an engine by boiling the coolant in the water jacket of the engine and utilizing boiling heat transfer, In a down-flow type radiator in which a core tube is vertically arranged, a coolant inlet port is formed on one side of an upper tank, and a coolant outlet port is formed on the other side of a lower tank. The present invention is characterized in that a deflector plate for colliding the coolant flowing from the coolant inlet with the side wall is provided, and a partition member is provided for flowing the gas-liquid separated gas-phase coolant and the liquid-phase coolant from separate core tubes to the lower tank. It is a thing.

[0012]

[Action]

 By providing the upper tank with a deflector plate that causes the coolant flowing from the coolant inlet port to collide with the side wall, and providing a partition member for flowing the gas-liquid separated gas phase liquid and liquid phase coolant from separate core tubes to the lower tank, The coolant that has flowed in from the inlet of the upper tank collides with the side wall by the deflector plate and is separated into gas-phase coolant and liquid-phase coolant. Then, the liquid-phase coolant flows down into the lower tank through a part of the core tube by the partition plate, and the gas-phase coolant enters into another core tube where it condenses into a liquid phase and flows out from the outlet. ..

[0013]

【Example】

 FIG. 1 shows a cross section of a radiator for a boiling cooling apparatus according to an embodiment of the present invention (cross section AA of FIG. 3), FIG. 2 shows a cross section of BB of FIG. 1, and FIG. There is. The members having the same functions as those in the related art are designated by the same reference numerals, and the duplicated description will be omitted.

In the radiator for a boil cooling apparatus according to the present embodiment, the upper tank is provided with a deflector plate that causes the coolant flowing from the coolant inlet port to collide with the side wall, and the vapor-liquid coolant and the liquid-phase coolant are separated from each other. A partition member is provided to allow separate core tubes to flow to the lower tank.

As shown in FIGS. 1 to 3, in the radiator 31 for the boiling cooling device, a large number of core tubes 16a and 16b are provided between the upper tank 14 into which the coolant flows and the lower tank 15 from which the condensed water of the coolant is discharged. Is provided along the up-down direction, and a corrugated fin 17 for heat dissipation is provided between the core tubes 16a and 16b. An inlet 32 for the coolant is provided on one side of the upper tank 14, and an outlet 33 for the condensed water of the condensed liquefied coolant is provided on the other side of the lower tank 15.

In the upper tank 14, a deflector plate 34 that is located below the coolant inlet 32 and opens to the side wall of the upper tank 14 is attached, and a partition plate 35 is attached to the lower portion of the upper tank 14. There is. Therefore, the coolant flowing in from the coolant inlet 32 collides with the side wall by the drift plate 34, and the gas-liquid separated liquid-phase coolant and the liquid-phase coolant are separated by the partition plate 35. The core tubes 16a and 16b flow down to the lower tank 15.

Thus, the coolant that has flowed in from the inflow port 32 of the upper tank 14 collides with the inclined side wall in the upper tank 14 by the drift plate 34, and is separated into a vapor-phase coolant and a liquid-phase coolant. Then, the liquid-phase coolant (condensed water) flows down to the lower tank 15 through a part of the core tube 16a by the partition plate 35 and flows to the outlet 33 side. On the other hand, the vapor-phase coolant (steam) enters another core tube 16b, condenses here, becomes a liquid phase and falls, and then flows into the lower tank 15 and flows together with the cooled liquid-phase coolant in the lower tank 15. It flows out from the outlet 33.

As described above, the upper tank 14 is provided with the deflector plate 34 for colliding the coolant flowing from the coolant inlet port 32 with the side wall, and the gas-liquid separated liquid-phase coolant and the liquid-phase coolant are respectively supplied from the lower core tanks 16a and 16b. Since the partition plate 35 that flows to 15 is provided, the gas and liquid are dispersed and flow into the dedicated core tubes 16a and 16b respectively, and the water film on the inner surface of the core tube 16b is reduced, and the heat radiation amount of the radiator increases. To do. In addition, the radiator can perform the gas-liquid separation of the coolant without installing a special gas-liquid separation mechanism, and this gas-liquid separator can be omitted.

FIG. 4 shows a cross section of a radiator for a boil cooling apparatus according to another embodiment of the present invention. In the above-described embodiment, the partition plate 35 is used as a partition member for flowing the gas-liquid separated gas-phase coolant and the liquid-phase coolant from the separate core tubes to the lower tank. As shown in FIG. 4, the height of the core tube 16c through which the vapor-phase coolant (vapor) flows is higher than that of the core tube 16a through which the liquid-phase coolant (condensed water) flows. Therefore, the liquid-phase coolant flows from only the core tube 16a to the lower tank 15 and does not enter the core tube 16c. On the other hand, the vapor-phase coolant flows into the lower tank 15 only from the core tube 16c.

[0020]

[Effect of the device]

 As described above in detail with reference to the embodiments, according to the radiator for a boil cooling apparatus of the present invention, in the down-flow type radiator, the coolant inlet port is formed on one side of the upper tank while the other lower tank is formed. A coolant outlet is formed on the side, and a deflector plate is provided in the upper tank to collide the coolant flowing from the coolant inlet with the side wall, and the vapor-liquid separated liquid-phase coolant and the liquid-phase coolant are provided in separate cores. Since a partitioning member that flows from the tube to the lower tank is provided, the coolant that has flowed in from the inlet collides with the side wall of the upper tank by the deflector plate to separate the gas and liquid, and a simple gas-liquid separation mechanism is not required. Coolant gas-liquid separation can be performed with the structure, and the gas-liquid separator of the boiling cooling device can be omitted to simplify the boiling cooling device. It can be achieved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view (cross-section AA of FIG. 3) of a radiator for a boiling cooling device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line BB of FIG.

FIG. 3 is a side view of a radiator for a boiling cooling device.

FIG. 4 is a sectional view of a radiator for a boiling cooling device according to another embodiment of the present invention.

FIG. 5 is an overall configuration diagram of a general boiling cooling device.

FIG. 6 is a perspective view of a conventional downflow type radiator.

[Explanation of symbols]

 14 Upper Tank 15 Lower Tank 16a, 16b, 16c Core Tube 17 Corrugated Fin 31 Radiator 32 Coolant Inlet 33 Coolant Outlet 34 Drift Plate 35 Partition Plate (Partition Member)

Claims (1)

[Scope of utility model registration request] 1. A downflow type in which a core tube is arranged in a vertical direction, which is used in a boiling cooling device for cooling an engine by boiling the coolant in a water jacket of the engine and utilizing boiling heat transfer. In the radiator of 1, while forming a coolant inlet port on one side of the upper tank, a coolant outlet port is formed on the other side of the lower tank, and a deflector plate that collides the coolant flowing from the coolant inlet port with the side wall of the upper tank. A radiator for a boiling cooling device, characterized in that a partitioning member is provided for flowing the gas-phase coolant and the liquid-phase coolant separated from each other through separate core tubes to the lower tank.