JPH0616300Y2 - Vehicle radiator - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a radiator for cooling engine cooling water of vehicles for passenger cars and construction machines, and relates to a radiator most suitable for a radiator having a lower front bonnet.

[Prior art]

There may be cases where it is desirable to reduce the ventilation resistance or to reduce the height of the vehicle front end bonnet as much as possible in order to improve the visibility in front.

In such a case, the vicinity of the air intake of the vehicle is extremely narrow and its height becomes low. This made it difficult to design radiators and fans.

Therefore, the present invention has an object to provide a radiator which can be freely designed by effectively utilizing such a small space in such an engine room, and its configuration is as follows.

[Means for Solving the Problems]

The vehicle radiator of the present invention comprises a pair of a large core 1 and a small core 2 each including a tube and a fin arranged in parallel.
Are arranged between a pair of engine cooling water inlet / outlet tanks 3, 4 and 5, 6 which are spaced apart from each other, thereby providing a main radiator 7 having a large capacity and a sub radiator 8 having a small capacity. Then, the two inlet tanks 3 and 5 and the two outlet tanks 4 and 6 are connected by pipes 9 and 10. Further, an engine-driven fan 11 is provided so as to face only the main radiator 7, and an engine cooling water circulation path is formed between the inlet / outlet tanks 3 and 4 of the main radiator 7 and the engine 12. When the temperature of the cooling water after passing through the core 1 of the main radiator 7 exceeds the upper limit set value, the cooling water is communicated between the main radiator 7 and the sub radiator 8, and when the cooling water is below the lower limit set value. A valve 13 for stopping the communication is provided. And the main radiator 7
Is the height of the core 1 that is smaller than the total load of the vehicle.

Further, fins 14 are preferably provided on the outer circumferences of the pipes 9 and 10 which communicate between the radiators 7 and 8.

〔Example〕

FIG. 1 is a perspective view of a vehicle radiator of the present invention, FIG. 2 is an explanatory schematic diagram thereof, and FIG. 3 is a valve of the radiator.
FIG. 13 is an explanatory diagram showing another embodiment of 13th embodiment.

The radiator of this embodiment is an engine 12 as shown in FIG.
The main radiator 7 is located in front of the fan, and the fan 11 is provided on the back surface thereof, and the fan 11 is ignited by the driving force of the engine 12. A sub radiator 8 is provided in parallel with the main radiator 7. These radiators are large cores 1 consisting of many tubes and fins.
Has a small core 2 and both ends of these tubes are fluid-tightly connected to the tanks 3 and 4 and the tanks 5 and 6, respectively. And
A circulation path is formed between the tanks 3 and 4 of the main radiator 7 and the engine 12 via a hose. Pipes 9 and 10 are provided between the inlet tanks 3 and 5 of the radiators 7 and 8 and between the outlet tanks 4 and 6, respectively. The pipes 9 and 10 are respectively provided with valves 13 as shown in FIG. 2, for example. Also, a thermo sensor is provided between the tank 4 and the engine 12.
16 is provided, and the temperature detection signal thereof is input to the control device 15, and at the same time, the control device 15 outputs a valve opening / closing signal to the valve 13. In this embodiment, the valves 13 are provided on the pipes 9 and 10, respectively, but the valves 13 may be provided only on the pipes 10 communicating the lower tanks. In this case,
As shown in FIG. 3, a thermostat type valve 13 can be provided. This valve 13 is, for example, of a wax type, and when the temperature of the cooling water in the tank 4 becomes a certain temperature or higher, the cylinder moves to the right against the spring as shown in the figure, and the cooling water flows to the sub radiator 8. It flows from the tank 6 into the tank 4 of the main radiator 7. In this embodiment, the pipe 10 is made of a metal tube and formed into a flexible bellows to form the fins 14 on the outer surface of the pipe to further cool the cooling water flowing through the pipe 10. . It is also possible to provide such fins 14 on the pipe 9 connecting the upper tanks to each other.

[Action]

In FIG. 2, when the engine is started to be driven, the valve 13 is closed because the temperature of the cooling water in the tank 4 is low. Then, the fan 11 is rotated by the engine 12 so that the airflow flows only through the core 1 of the main radiator 7. engine
As the load of 12 gradually increases, the engine from tank 4
The temperature of the cooling water flowing back to 12 rises, and the control device 15 which receives the signal from the thermo sensor 16 outputs an opening signal of the valve 13. Then, the cooling water flowing out from the engine 12 flows into the tank 5 of the sub radiator 8 through the tank 3 of the main radiator 7, and then flows from the tank 5 through the core 2 to the engine 12 from the tank 6. At this time, the core 2 of the sub radiator 8 is already filled with the cooling water, and the relatively low temperature cooling water is immediately supplied to the engine 12, and as a result, the temperature of the entire cooling water is lowered. The core 2 of the sub-radiator 8 has an air flow flowing therein as the vehicle travels, and cools the cooling water flowing in the tube. Next, when the load decreases, the temperature of the cooling water flowing through the outlet pipe 19 decreases, and the control device 15 that has input the temperature detection signal
Outputs a closing signal of the valve 13. Then, again, the engine cooling water is cooled only by the core 1 of the main radiator 7.

In addition, as shown in FIG. 3, the pipe 10 for connecting both radiators is connected.
The control device 15 can be omitted by using a thermostat type valve 13 interposed in the valve.

[Effect of device]

In the vehicle radiator of the present invention, the heat exchange performance of the main radiator 7 having the fan 11 is made smaller than the full load capacity of the vehicle in which the fan 11 is mounted, and the height of the core 1 is lowered, so that the front portion of the vehicle is particularly To improve visibility and
It is possible to provide an optimal radiator for a small vehicle in the engine room, which has less ventilation resistance due to traveling of the vehicle. Since the sub radiator 8 without the fan 11 is connected by the pipe 9 and the pipe 10, the full load of the vehicle can be coped with, and the degree of freedom of the installation position of the sub radiator 8 is increased, which is narrow. It can be easily stored in an appropriate position in the engine compartment. Also, the valve
By cooling the cooling water in the sub-radiator 8 when the valve 13 is closed, the cooling water temperature can be rapidly lowered when the valve 13 is opened. Become a radiator to get.

Next, in the radiator according to the second aspect, since the fins 14 are provided on the outer circumferences of the pipes 9 and 10, the cooling water flowing therethrough can be further cooled to provide a radiator with high heat dissipation.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle radiator of the present invention, FIG. 2 is an explanatory schematic diagram thereof, and FIG. 3 is a valve of the radiator.
FIG. 13 is an explanatory diagram showing another embodiment of 13th embodiment. 1, 2 ... Core, 3-6 ... Tank 7 ... Main radiator, 8 ... Sub radiator 9, 10 ... Pipe, 11 ... Fan 12 ... Engine, 13 ... Valve 14 ... Fin, 15 ...... Control device 16 …… Thermo sensor, 18 …… Inlet pipe 19 …… Outlet pipe

Claims (2)

[Scope of utility model registration request] 1. A pair of engine cooling water inlet / outlet tanks (3) each having a pair of large-sized cores (1) and small-sized cores (2) each of which is composed of tubes and fins arranged in parallel.
(4) and (5) (6) with a large capacity main radiator (7) and a small sub-radiator (8), both the inlet tank (3) (5) and both The outlet tanks (4) and (6) are connected to each other by pipes (9) and (10), an engine-driven fan (11) is provided so as to face only the main radiator (7), and the entrance and exit of the main radiator (7) are provided. Tank (3) (4) and engine (12)
A cooling water circulation path is formed between the main radiator and
When the temperature of the cooling water after passing through the core (1) of (7) exceeds the upper limit set value, the cooling water is connected between both radiators (7) and (8), and when it is below the lower limit set value. A vehicle radiator characterized in that a valve (13) for stopping the communication is provided, and the height of the core (1) is reduced so that the main radiator (7) is smaller than the total load capacity of the vehicle. . 2. The both radiators according to claim 1.
(7) (8) fins (14) on the outer circumference of the pipes (9) (10) communicating between
The one provided with.