JP2513753Y2 - Motor / fan cooling device for heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a motor / fan cooling device for a heat exchanger, and more particularly to an opening / closing mechanism of a baffle plate between a radiator and a condenser.

[Conventional technology]

Generally, in a vehicle equipped with an air conditioner, a condenser, which is a component of a refrigeration cycle, for cooling is mounted on the front side of a radiator. The condensation heat generated in this condenser is radiated by cooling with running wind at high speed.

At high speeds, it is required to efficiently guide the traveling wind to the condenser and the radiator, and at the same time to efficiently cool the wind.
The one shown in 63-16925 is known (shown in FIG. 4).

In the figure, 21 is a cylindrical shroud, a condenser 22 is attached to the tip thereof, and a radiator 23 is attached in the middle thereof. An engine fan 24 is arranged at the center of the ventilation port 21A at the rear end of the shroud 21. The space 25 between the condenser 22 and the radiator 23 is surrounded by the shroud 21.

Then, at high speed of the vehicle, the traveling wind passes through the condenser 22 and through the space 25, as shown by the arrow, to the radiator 23.
At that time, the shroud 21 in front of the radiator 23 functions as a baffle plate, and the entire amount of traveling wind is guided to the radiator 23. Then, the traveling wind that has passed through the radiator 23 is blocked by the engine fan 24, but passes through the gap 26 between the engine fan 24 and the ventilation port 21A of the shroud 21 to the engine room (not shown).

[Problems to be solved by the device]

However, in the conventional motor / fan cooling device for the heat exchanger, when the vehicle is running at high speed, the front side of the condenser 22 has a high voltage due to the resistance of the engine fan 24. The air volume of the traveling wind passing through the inside of 22 decreases. That is, the passing wind is bad.

Therefore, there is a problem that the condenser 22 is not sufficiently cooled and the heat dissipation performance of the condensation heat generated in the condenser 22 is poor.

There is known a motor / fan cooling device for a heat exchanger having a structure in which a shutter having a predetermined area is provided on the front side of a radiator, and the shutter includes a large number of openable / closable members. If you open it at high speed,
Although the amount of traveling air increases and the heat dissipation performance of the condenser also improves, this method requires many shutter opening / closing members to be openable / closable at the same time. A power source for the actuator is required, and if the electric power of the power source is used as the power source, the power of the power source is also consumed and the power source capacity decreases rapidly, which is not preferable.

The present invention has been made in order to solve the above-mentioned problems, and its purpose is to improve the heat dissipation performance of a capacitor at a high speed of a vehicle, and to construct a simple structure and An object of the present invention is to provide a motor / fan cooling device for a heat exchanger that does not consume power.

[Means for solving the problem]

In order to achieve the above object, the present invention is directed to a radiator, a condenser disposed at a predetermined distance on the front side of the radiator, a wind guide plate provided between the radiator and the condenser, and a rear side of the radiator. In a motor / fan cooling device for a heat exchanger having a fan and a motor / fan arranged on the side, a baffle plate provided between a radiator and a condenser is attached to the condenser so as to be openable and closable. Along with this, it is connected to an actuator that operates with the back electromotive force of a motor generated from the rotational energy of a fan that rotates with traveling wind, and is opened by the actuator when the vehicle speed is above a predetermined value and the water temperature of the radiator is below a predetermined value. .

[Action]

According to the present invention, when the vehicle speed becomes high, the wind blows the motor, which is cut off from the power source, to become a generator, and the counter electromotive force generated by this motor causes a current to flow through the actuator, which causes the actuator to operate. Opens the baffle plate.

Then, when the baffle plate opens, the traveling wind escapes into the engine room through the gap formed between the baffle plate and the radiator or the condenser.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show a motor / fan cooling device for a heat exchanger according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 is a radiator, and a condenser 2 which is a component of a refrigeration cycle is arranged in front of the radiator 1 at a predetermined distance. Reference numerals 3 and 4 denote baffle plates, one end of which is rotatably provided on the upper and lower ends of the condenser 2, and are located between the radiator 1 and the condenser 2 and surround a space 5 therebetween.

Reference numeral 6 denotes an actuator that acts by electromagnetic force, which is arranged above and below the capacitor 2. The tip of the rod 7 of this actuator 6 is linked to the tips of the baffle plates 3 and 4.

The structure of the actuator 6 is shown in FIG. That is, the actuator 6 is a cylindrical body with both ends closed.
6A, a cylindrical sliding portion 6B fixed in the tubular body 6A, and a shaft member 6C slidably sliding in the cylindrical sliding portion 6B,
A spring material 6D mounted in the cylindrical sliding portion 6B, a movable iron core 6E that moves on the same axis as the shaft member 6C, a fixed iron core 6F, a coil 6G provided in the fixed iron core 6F, and a movable iron core. It is composed of a rod 7 integrally connected to 6E.

A motor / fan 9 is attached to the radiator 1 on the rear side of the radiator 1 via a fan shroud 8. The motor / fan 9 is composed of a motor 9A and a fan 9B.

In FIG. 2, a key switch 11 is provided on the power supply 10 side.
One end of the thermoswitch 12 is connected to the other end of the key switch 11. Thermo switch 12
Is connected to the power supply 10 side via the motor 9A,
Vehicle speed detection switch 13 that closes at a certain speed or faster
Is connected to the coils 6G and 6G of the actuator 6 via the, and the other end of the coil 6G is connected to the power source 10 side. The thermo switch 12 is used for the tank of the radiator 1 shown in FIG.
It is attached to 1A and opens and closes according to the cooling water temperature.
When the cooling water temperature is higher than the predetermined temperature, the motor 9A and the other end of the key switch 11 are connected, and when the cooling water temperature is lower than the predetermined temperature, the motor 9A and the vehicle speed detection switch 13 are connected.

 Next, the operation of this embodiment will be described.

In the electric circuit diagram of FIG. 2, for example, at a low speed such as a slow operation, the temperature of the cooling water is high, and a current flows from the power supply 10 to the motor 9A via the thermoswitch 12, thereby
The fan 9B is rotated by the rotation of 9A, and the cooling air is guided from the front side of the vehicle to the condenser 2 and the radiator 1 to be cooled. At this time, the vehicle speed detection switch 13 is open, current does not flow from the motor 9A to the coil 6G, therefore the actuator 6 of FIG. 1 does not operate, and the baffle plates 3 and 4 are closed in the state shown by the solid line. There is.

On the other hand, when the vehicle speed becomes high, the cooling water temperature becomes low due to the cooling effect of the traveling wind, the thermoswitch 12 operates to connect the motor 9A and the vehicle speed detection switch 13, and at the same time, the vehicle speed detection switch 13 close. For this reason, the motor
No current is supplied to the 9A from the power source 10, and the traveling wind causes the motor 9A to rotate and become a generator, thereby generating a counter electromotive force. Therefore, from the motor 9A through the thermo switch 12, the coils 6G, 6
Current flows through G and coils 6G and 6G are excited. As a result, the movable iron core 6E is attracted to the fixed iron core 6F and the actuator 6 operates, and the air guide plates 3 and 4 are pulled by the actuator 6 to be in the state shown by the two-dot chain line, and the air guide plates 3 and 4 and the radiator. Vents 14 are formed between the two.

As described above, when the baffle plates 3 and 4 are in the open state, the traveling wind that has passed through the condenser 2 passes through the vent 14 to the engine room (not shown), and the pressure on the front side of the condenser 2 is lower than before. Therefore, the amount of traveling wind passing through the condenser 2 is increased, and the cooling efficiency for the condenser 2 is improved.

According to the above configuration, when the vehicle is at high speed, the wind guide plates 3, 4
When the air conditioner is open, the driving wind will blow the wind guide plates 3 and 4 and the radiator 1.
The amount of air that passes through the condenser 2 increases through the vent 14 between the and.

Therefore, it is possible to improve the cooling efficiency of the capacitor 2 and improve its heat dissipation performance.

Further, it is not necessary to open and close a large number of opening / closing members to increase the amount of traveling wind as in the conventional case, and it is sufficient to open / close the baffle plates 3 and 4, so that the structure can be simplified.

Furthermore, since the vehicle power source 10 is not used as a power source to operate the actuator 6, but the back electromotive force of the motor 9A is used, the decrease in the electric capacity of the power source 10 can be suppressed.

In the present embodiment, the structure of the actuator 6 is a structure that moves the rod 7 by using electromagnetic force, but the structure is not limited to such a structure, and linear or rotary motion is generated by using electromagnetic force. The structure may be such that, for example, the wire is unwound from the hoisting machine that is operated by the rotation of the motor, and the air guide plates 3, 4
It can also be configured to open and close.

[Effect of device]

As described above, according to the present invention, when the vehicle is at high speed,
When the air guide plate is opened by the actuator, traveling wind escapes into the engine room through the gap formed between the air guide plate and the radiator or the condenser, and the amount of air passing through the condenser increases.

Therefore, it is possible to improve the cooling efficiency of the capacitor and improve its heat dissipation performance.

Further, it is sufficient to open and close the baffle plate in order to increase the air volume of the traveling wind, so that the structure can be simplified.

Furthermore, since the back electromotive force of the motor is used as the power source to use the back electromotive force of the vehicle to operate the actuator, it is possible to reduce the decrease in the electric capacity of the power source.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional explanatory view of a motor / fan cooling device for a heat exchanger according to an embodiment of the present invention. FIG. 2 is an electric circuit diagram of a motor / fan cooling device of the heat exchanger. FIG. 3 is a sectional view of the actuator of FIG. FIG. 4 is a sectional view of a conventional motor / fan cooling device for a heat exchanger. [Explanation of symbols of main parts] 1 …… Radiator 2 …… Condenser 3,4 …… Baffle plate 6 …… Actuator 9 …… Motor / fan 9A …… Motor 9B …… Fan

Claims (1)

(57) [Scope of utility model registration request] 1. A radiator, a condenser disposed in front of the radiator at a predetermined distance, a baffle plate disposed between the radiator and the condenser, and a fan disposed in the rear of the radiator. In a motor / fan cooling device of a heat exchanger including a motor / fan composed of a motor, the air guide plate provided between the radiator and the condenser is
It is attached to a condenser so that it can be opened and closed, and is connected to an actuator that operates with the back electromotive force of a motor generated from the rotational energy of a fan that rotates in the running wind.When the vehicle speed is above a certain value and the water temperature of the radiator is below a certain value, the actuator A motor / fan cooling device for a heat exchanger, which is opened by a heat exchanger.