JP5253900B2 - Radiator cooling structure - Google Patents

Description

  The present invention relates to a radiator cooling structure, and in particular, to an improvement of the structure for increasing the cooling effect of the radiator.

  In general, industrial vehicles such as forklifts and automobile engines are equipped with a radiator for storing cooling water for cooling the engine, and the outside air introduced from the outside of the vehicle is guided to the radiator by a cooling fan. Thus, the cooling water in the radiator is cooled.

  In the case of a forklift having a conventional structure, as shown in FIG. 4 of Japanese Patent Application Laid-Open No. 2004-196529, outside air is introduced into the engine room from below the engine, flows around the engine, and then flows through the fan shroud by the cooling fan. It is designed to be guided to the radiator.

However, in the conventional structure, since the outside air guided to the radiator is heated by the heat of the engine when passing around the engine, there is a problem that there is a limit in improving the cooling effect of the radiator. .
JP 2004-196529 A (see FIG. 4)

  The present invention has been made in view of such conventional circumstances, and the problem to be solved by the present invention is to realize a radiator cooling structure capable of improving the cooling effect of the radiator with a simple mechanism. is there.

The radiator cooling structure according to the first aspect of the present invention is a radiator cooling structure that employs a cooling system that guides the outside air for cooling introduced into the bonnet toward the radiator on the rear side of the vehicle. An opening for introducing outside air is formed so that the front edge is located at a position corresponding to the end, a hood having an outside air introduction port communicating with the opening is provided on the upper surface of the bonnet, and the opening of the opening is formed inside the bonnet. A flat heat shield plate attached to the front edge and suspended downward and having a heat shielding action is provided apart from the engine, and heat from the engine is cut off by the heat shield board and the opening is The outside air introduced from is guided to the radiator behind the engine.

According to the first aspect of the present invention, the outside air is introduced from the opening on the upper surface of the hood through the outside air inlet of the hood to the rear part of the engine of the vehicle, and is guided to the radiator behind the engine by the rectifying action of the heat shield plate inside the hood. It is burned.

In this case, the outside air from the front of the vehicle is efficiently introduced into the hood by the hood, and the outside air introduction opening is arranged at the engine rear position of the bonnet so that the outside air introduced from the opening is It is introduced to the rear of the engine without flowing around the engine. Thereby, it is possible to prevent the introduced outside air from being heated by the heat of the engine by passing around the engine. In addition, in this case, since the heat shield plate for blocking the heat from the engine is provided inside the bonnet , the introduced outside air can be prevented from being heated by the radiant heat of the engine. Furthermore, by providing a heat shield on the front side of the opening inside the bonnet , the introduced outside air can be rectified by the action of the heat shield and guided to the radiator behind the engine, so that the outside air can be efficiently used as a radiator. Can guide the wind. Moreover, it can prevent that a heat shield board is directly heated by an engine block by arrange | positioning the heat shield board away from the engine.

In invention of Claim 2 , in Claim 1, a heat shield is a product made from a heat-resistant resin.

  In this case, by using resin, an arbitrary shape can be easily formed, the rectifying action against the outside air can be improved, and the attachment to the inside of the bonnet is facilitated. Moreover, the lifetime can be improved by using a heat-resistant thing.

In invention of Claim 3 , in Claim 1, the heat shield is comprised from the material with low heat conductivity.

  In this case, by using a material having low thermal conductivity, the heat insulating action of the heat shield plate is increased, and the introduced outside air can be reliably prevented from being heated by the radiant heat of the engine.

According to a fourth aspect of the present invention, in the first aspect, the vehicle is an industrial vehicle.

  Generally, an industrial vehicle such as a forklift often travels at a low speed, so it is necessary to efficiently guide the outside air to the radiator. However, according to the invention of claim 1 of the present application, the outside air introducing portion is provided in the bonnet. In addition, since the outside air during traveling can be efficiently introduced into the hood by the outside air introduction section, it is suitable for a radiator cooling structure for industrial vehicles.

As described above, according to the present invention, an opening for introducing outside air is provided in the bonnet at the rear of the engine of the vehicle , and a heat shield for blocking heat from the engine is provided on the front side of the opening inside the bonnet . Outside air is introduced into the rear of the engine of the vehicle through the opening of the bonnet, and is guided to the radiator behind the engine by the rectifying action of the heat shield . In this case, by providing the opening for outside air introduced into the engine rear position of the bonnet, outside air introduced from the opening, since it is introduced into the engine rear without flowing around the engine, introduced outside air Passing around the engine can be prevented from being heated by the heat of the engine. Further, since there is provided a heat shield plate for blocking the heat from the engine to the front of Oite opening into the interior of the bonnet, with the introduced external air is prevented from being heated by radiant heat of the engine, introduced The outside air can be rectified by the action of the heat shield and guided to the radiator behind the engine, whereby the outside air can be efficiently guided to the radiator.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIGS. 1 to 3 are views for explaining a radiator cooling structure according to an embodiment of the present invention. FIG. 1 is a side view of an engine room of a forklift that employs the radiator cooling structure according to the present embodiment. FIG. 3 is a perspective view of a hood and an outside air introduction port constituting the radiator cooling structure, and FIG. 3 is a perspective view of a heat shield plate constituting the radiator cooling structure. In each figure, the left side indicates the front of the vehicle, and the right side indicates the rear of the vehicle.

  As shown in FIGS. 1 to 3, the bonnet 10 of the forklift is provided with an outside air introduction portion 1. The outside air introduction unit 1 is disposed at the rear part of the engine 100. The outside air introduction unit 1 includes an opening 10a formed on the upper surface of the bonnet 10 and a hood 11 provided on the top of the bonnet 10 and having an outside air introduction port 11a communicating with the opening 10a. The outside air introduction port 11a opens to the front of the vehicle.

  Inside the outside air introduction unit 1, a heat shield plate 2 for blocking heat from the engine 100 is provided. The heat shield 2 is disposed at the front opening edge of the opening 10a or in the vicinity thereof. The heat shield 2 is suspended from the lower surface of the bonnet 10 via the mounting member 20. A radiator cooling structure according to the present embodiment is configured by the outside air introduction unit 1 and the heat shield plate 2 described above.

  The heat shield plate 2 is preferably made of a heat resistant resin, and more preferably made of a material having low thermal conductivity.

  As shown in FIG. 1, a radiator 101 is provided behind the engine 100. An intercooler 102 and an oil cooler 103 are provided on the front surface of the radiator 101, and a fan shroud 104 is further provided in front of these.

  In the radiator cooling structure configured as described above, outside air is introduced into the hood 11 from the outside air introduction port 11a of the hood 11 of the outside air introduction unit 1 provided on the bonnet 10, and the opening 10a of the bonnet 10 is provided. And is introduced into the engine room inside the bonnet 10 (see the arrow indicating the flow of outside air in FIG. 1).

  The outside air introduced into the engine room is rectified by the heat shield plate 2, guided to the fan shroud 104 at the rear of the engine 100, and guided from the fan shroud 104 to the radiator 101 (flow of outside air in FIG. 1). (See arrows for As shown in the lower part of FIG. 1, outside air is also introduced from the bottom of the vehicle, and this outside air is also introduced into the fan shroud 104.

  In this case, since the outside air introduction part 1 is arranged at the engine rear position of the bonnet 10, the outside air introduced from the outside air introduction part 1 is introduced into the rear part of the engine 100 without flowing around the engine 100. The Thereby, it is possible to prevent the introduced outside air from being heated by the heat of engine 100 by passing around the engine. In addition, in this case, since the heat shield plate 2 for shutting off the heat from the engine 100 is provided inside the outside air introduction unit 100, the introduced outside air is heated by the radiant heat of the engine 100. Can be prevented. Furthermore, since the heat shield plate 2 is provided in the outside air introduction section 1, the introduced outside air can be rectified by the action of the heat shield plate 2 and guided to the radiator 101 at the rear of the engine, so that the outside air can be efficiently discharged. Can direct air to the radiator.

  In this case, since the hood 11 having the outside air introduction port 11a communicating with the opening 10a on the upper surface of the bonnet 10 is provided as the outside air introduction portion 1, the outside air from the front of the vehicle can be efficiently introduced into the hood. it can.

Further, since the heat shield plate 2 is suspended from the lower surface of the bonnet 10, the heat shield plate 2 can be arranged away from the engine 100, and the heat shield plate 2 is prevented from being directly heated by the engine block. it can.

  In addition, since the heat shield plate 2 is made of a heat resistant resin, it is possible to improve the lifespan, easily mold an arbitrary shape, and improve the rectifying action against the outside air. In addition, since the heat shield plate 2 is made of a material having low thermal conductivity, the heat insulating action of the heat shield plate 2 is increased, and the introduced outside air is reliably heated by the radiant heat of the engine 100. Can be prevented.

  In the above embodiment, the forklift has been described as an example of the vehicle to which the radiator cooling structure according to the present invention is applied. However, the present invention can also be applied to industrial vehicles other than the forklift. In general, industrial vehicles such as forklifts often travel at low speed, so it is necessary to efficiently guide the outside air to the radiator. However, according to the present invention, the outside air introduction part is provided in the bonnet, Since the outside air inside can be efficiently introduced into the hood by the outside air introduction section, it is suitable for a radiator cooling structure for industrial vehicles. Furthermore, the present invention is applicable not only to industrial vehicles but also to automobiles.

It is a side view of the engine room of the forklift which has the radiator cooling structure by one Example of this invention. FIG. 2 is a perspective view of a hood and an outside air introduction port that constitute a radiator cooling structure (FIG. 1). It is a perspective view of the heat-shielding board which comprises a radiator cooling structure (FIG. 1).

1: Outside air introduction part

2: Heat shield

10: Bonnet 10a: Opening 11: Hood 11a: Open air inlet

100: Engine 101: Radiator

Claims (4)

In the radiator cooling structure in which the cooling outside air adopted within the bonnet adopts a cooling system for the air guide toward the vehicle rear side of the radiator,
An opening for introducing outside air is formed on the upper surface of the bonnet so that the front edge thereof is located at a position corresponding to the rear end of the engine of the vehicle, and a hood having an outside air introducing port communicating with the opening is provided on the upper surface of the bonnet. A flat heat shield that is attached to the front edge of the opening inside the bonnet and hangs downward and has a heat shield function is provided away from the engine, and heat from the engine is cut off by the heat shield. the rectification of its addition to and to guide the introduced outside air from the opening to the engine behind the radiator,
A radiator cooling structure characterized by that. In claim 1,
The heat shield is made of heat-resistant resin,
A radiator cooling structure characterized by that. In claim 1,
The heat shield is made of a material having low thermal conductivity,
A radiator cooling structure characterized by that. In claim 1,
The vehicle is an industrial vehicle,
A radiator cooling structure characterized by that.

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