JPS6268127A - Heat shielding cooling device for fan motor - Google Patents

Abstract

PURPOSE:To reduce the dimension of the apparatus by installing a heat shielding plate between a motor for driving a cooling fan and a heat source opposed to the motor and installing a guide piece for guiding the cooling wind towards the motor onto the heat shielding plate, thus permitting the motor and the heat source to be arranged in the vicinity. CONSTITUTION:When a cooling fan 8 is driven by a motor 5, accompanied by the operation of an engine 6, cooling wind is supplied into an engine room through a radiator 3. While, an exhaust manifold 7 is heated by the exhaust heat of the engine 6, and the heat is irradiated. Since, in this case, a heat shielding plate 11 is interposed between the manifold 7 and the motor 5, the direct transmission of the radiation heat from the manifold 7 to the motor 5 is suppressed by the heat shielding plate 11. Further, a portion of the cooling wind is guided towards the motor 5 along a guide piece 13 installed at the upper edge part of the heat shielding plate 11 and motor can be cooled. Therefore, the need of forming a clearance between the motor 5 and the manifold 7 is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applied to a 7-inch cooling system installed at the rear of a radiator. The present invention relates to a thermal insulation cooling device for a driving motor.

Conventional Technology Conventionally, various functional parts have been installed in the engine room of an automobile in a box structure as shown in Figure 6 (see "7 Amiria Maintenance Manual" published by Mazda Motor Corporation, January 1985, No. 1-75).
Refer to page 76 J, that is, in this example, the engine is placed in the so-called lateral It
The present invention relates to an automobile 1 in which a cooling fan is driven by a motor.
A cooling fan 4 is attached to the cooling fan 4, and a motor 5 is attached to the center of the cooling fan 4. An engine 6 is arranged behind the motor 6 in the vehicle width direction, and an exhaust manifold 7 projects from the front of the engine 6.

Problems to be solved by the invention However, in such a horizontal engine 6,
As shown in the figure, the exhaust manifold 7 is located at the front of the engine 6, so it faces the motor 5 that drives the cooling 77 engine 4, and the motor 5 is heated by the radiant heat from the exhaust manifold 7, improving driving performance and durability. There is a risk that performance etc. may be impaired. In order to avoid the negative impact 11' on the motor 6 caused by the radiant heat, the clear 2/sC between the motor 6 and the exhaust manifold 7 is
6 engines had to be allocated with sufficient capacity, resulting in an increase in the size of engine room 2? There are some unavoidable problems.

The present invention has been made in view of the conventional situation, and provides a nine-fan motor thermal insulation cooling device ft- that eliminates heat radiation to the motor that drives the cooling fan without providing the clear 2/s Ct. It is something.

Means for Solving the Problems Ninthly, the present invention solves all of the above-mentioned problems.
A cooling fan driven by a motor is installed, and a heat shield plate is provided to completely shield the heat source side of the motor, and a heat shield plate is provided to completely shield the heat source side of the motor. Also, a guide piece is provided to guide the cooling air t, which is supplied as the cooling fan rotates, in the direction of the motor.

Effect: In the above configuration, the heat shield plate absorbs the heat radiated from the heat source! The guide piece formed on the heat shield plate completely prevents heat transfer to the motor, and also prevents the cooling air t, which is supplied into the engine room as the car runs and the cooling fan rotates, in the direction of the motor. I will guide you to. This refined motor is
All the radiant heat from the heat source is directly received, so heating is suppressed, and cooling air is blown through the guide pieces to cool the area. Therefore, overheating of the motor is prevented without providing a clearance between the motor and the heat source, and a degree of freedom within the engine room is obtained.

Example A dormitory embodiment of the present invention will be described below with reference to the drawings.

That is, as shown in FIGS. 1 to 3, in the engine compartment 2 of the automobile 1, a radiator 3 is fixed on the front wall thereof, and behind the radiator 3 are a first cooling unit 7 and a second cooling unit 8. A cooling fan 9 is installed in parallel. A motor 5.5 is integrally mounted at the center of both cooling fans 8, 8, and the motors 5, 6 are fixed to the radiator 3 by a stay 10. On the other hand, an engine 6 is arranged behind the radiator 3, and the engine 6 is equipped with a motor 5 for the first cooling 7an 8.
An exhaust manifold 7 that generates heat is protruded from a portion facing the exhaust manifold 7. A heat shield plate 11 is inserted between the exhaust manifold 7 and the motor 5 of the first cooling fan 8, and the heat shield plate 11 is a platen IS.
It is fixed to the rear end surface of the cage/gage 5a of the motor 5 through the I.

The heat shield plate 11 has a rectangular shape that is elongated in the vertical direction as shown in FIG. .

In this embodiment with the above configuration, when both cooling fans 8.9 are driven by the motor 5.5 as the engine 6 operates, cooling air is supplied into the engine room 2 via the radiator 3. It is.

Further, when the automatic I11 starts, the cooling air 5 is also fed into the engine room 2 via the radiator 3 as the vehicle runs.

- The exhaust manifold 7 is heated by the exhaust heat of the engine 6 and radiates the heat. However, since a heat shield plate 11 is interposed between the exhaust manifold 7 and the motor 5, the radiant heat from the exhaust manifold 7 is prevented from being directly transmitted to the motor δ by the heat shield plate 11, and the radiant heat is transferred to the motor δ. The rise in body temperature is suppressed. Also, a part of the cooling air is guided toward the motor 5 along the guide piece 13 as shown by the arrow in FIG. 11. This compact motor 5 is forcibly cooled by the cooling air flowing down along the circumferential surface of the casing 5a, and a slight increase in body temperature due to radiant heat indirectly transmitted through the heat shield plate 11t is avoided, and the motor Heat generated in the motor 5 itself as the motor 5 operates is also removed by the cooling air, and the motor 5 is maintained at a low temperature. Exhaust manifold 7 with motor 5 and heat source
In between, it is possible to arrange both of them in close proximity without using all the clearance, and as a result, it is possible to downsize the engine room 2.

Is Fig. 4 another embodiment of the present invention? The heat shield plate 11 has a square shape, and guide pieces 13&, 13b are bent at an obtuse angle toward the front of the vehicle body between the four sides.

13e and 13d are provided, and the central base portion 14
There are ventilation holes 15&, 15b around the casing 5a.

15c and 15d are formed. According to this embodiment, the cooling air flows through each guide piece 13 & as shown by the arrow.

13b, L3c, 13dK blows 7t onto the casing 5a of the motor 5 from all around, and the ventilation port 15
& , 1.5 b.

15c and 15d. Close up and casing 5
Since the cooling air distributed over the entire circumference of the motor 1 provides an even better cooling effect, the motor 5 can be maintained at a lower temperature, and the durability t of the motor 5 can also be improved.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, the present invention includes a heat shield plate inserted between a heat source and a motor that is disposed on the rear surface of a radiator and drives a cooling fan, and a heat shield plate that is connected to the heat shield plate when the vehicle is running. The structure includes a guide piece that guides all of the cooling air supplied as the cooling fan rotates in the direction of the motor. Therefore, direct transmission of radiant heat from the heat source to the motor is completely blocked by the heat shield plate, and not only is the increase in motor body temperature due to radiant heat prevented, but the motor is forcibly cooled by the cooling air guided by the guide piece. be done. Therefore, there is no need to provide a clearance between the motor and the heat source, and both can be disposed close to each other, thereby making it possible to downsize the engine room.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a side view of the main part of the same embodiment, Fig. 3 is a text view of the main part of the embodiment in a different direction, and Fig. 4 is a A perspective view showing another embodiment of the present invention, g
Figure g5 is a perspective view showing the arrangement of functional components in a conventional engine room. DESCRIPTION OF SYMBOLS 1... Automobile, 2... Engine room, 7... Exhaust manifold (M source), 8... (1st) cooling fan, 11... Heat shield plate, 13, 13 g
, 13b, L3c. 13 d...Guide piece. Figure 3 4vA District 5

Claims (1)

[Claims] (1) In a structure in which a cooling fan driven by a motor is installed behind a radiator fixed in the engine room of an automobile, and a heat source is arranged opposite to the motor, there is a heat shield between the motor and the heat source. A fan characterized in that a plate is inserted and arranged, and a guide piece is provided on the heat shield plate to guide cooling air supplied in the direction of the motor as the automobile travels and the cooling fan rotates. Motor insulation cooling device.