JPH05145259A - Cooler - Google Patents

Abstract

PURPOSE:To reduce power consumption and noise by equipping it with a sensor, which senses the temperature, a circuit, which generates set temperature, a comparator, which compares the sensor output with the set temperature, and a fan, which rotates according to the output change from this comparator. CONSTITUTION:A temperature sensor 7 senses the temperature inside a cooler 10, an a revolution variable controller 23 compares it with the set temperature inside the cooler 10, and controls the speed of a motor 22, and drives a rotary part 21. The revolution variable controller 23 is made by a power source 1, the temperature sensor 7 monitors the temperature of the inside of the cooler 10, which changes at all times by use environment, and the revolution variable controller 23 senses the output signal 4 of the temperature sensor. The revolution variable controller 23 compares the temperature inside the cooler 10, and changes the current to be input into the motor 22, and controls the speed of a motor, and drives the rotary part 21. The power consumption and noise can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device, and more particularly to a cooling device used for cooling various electronic devices.

[0002]

2. Description of the Related Art A conventional cooling device is attached to a place to be cooled in order to prevent an increase in temperature inside the device and helps prevent malfunction of various electronic devices.

A conventional cooling device is shown in FIGS. In FIG. 3, an input power source 1 and a ground 3 are input, a motor unit 22 that outputs a sensor output signal 2, a rotating unit 21 that rotates a propeller, and an alarm circuit 24 that detects an alarm and outputs an alarm signal 5 are provided. .. When the input power source 1 is input, cooling is performed at a constant rotation speed, that is, the same air volume.
Further, an alarm circuit 24 is built-in, and when the number of rotations of the rotating portion 21 decreases, an alarm signal 5 is output to notify an external controller (not shown) of the abnormality.

Next, referring to FIG. 4, a variable resistor 25, a changeover switch 11, a motor section 22 for inputting the input power source 1 and the ground 3, and a rotating section 21 are provided.
This is because the temperature inside the device changes depending on the environmental use of the device, so the resistance is manually changed by the changeover switch 11.
The number of rotations that suits the environment can be selected.

[0005]

In the above-mentioned conventional cooling device, the air volume which is most suitable for environmental use of the apparatus cannot be selected, and the air volume is constant regardless of whether the inside of the apparatus is at high temperature or low temperature. More power is consumed. The same can be said for noise. Also, when developing the device, attach a cooling device to the necessary place inside the device,
The temperature rise of the circuit elements inside the equipment is measured using the measurement terminals such as thermocouples, and the cooling equipment is selected. However, there is a problem that it is difficult to select a fan motor because the data varies considerably depending on the set temperature and the environmental temperature where the device is installed.

[0006]

A cooling device according to the present invention comprises a sensor capable of sensing temperature, a circuit for generating a preset temperature, a comparator for comparing a sensor output from the sensor with the preset temperature, and the comparator. It is equipped with a fan that rotates according to the change in output from.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the cooling device of the present invention. Rotational speed variable control unit 23 and motor unit 22
The discharge motor fan 6 (or the suction motor fan 8) configured by the rotating unit 21 and the alarm circuit 24, and the temperature sensor 7.

The temperature sensor 7 detects the temperature inside the cooling device 10 (shown in FIG. 2) and compares it with the set temperature inside the cooling device 10 by the rotation speed variable control part 23 to control the speed of the motor part 22. , Drives the rotating unit 21.

The temperature sensor 7 monitors the temperature inside the cooling device 10 which is constantly changing due to environmental use when the rotation speed variable control section 23 is turned on by the input power source 1, and the temperature sensor output signal 4 is supplied to the rotation speed variable control section. 12 to detect.

The rotation speed variable control unit 23 compares the reference set temperature inside the cooling device 10 with the temperature inside the cooling device 10, changes the current input to the motor unit 22 to control the speed of the motor, and the rotation unit 2 Drive. Since the rotating unit 21 is driven according to the temperature inside the cooling device 10, the number of rotations can be reduced when the temperature is low, and can be increased when the temperature is high. With regard to noise, when the temperature is low, the noise can be reduced because the rotation speed is the minimum necessary rotation.

Further, when the number of revolutions decreases due to the abnormality of the motor unit 22, the motor unit 22 outputs the sensor output signal 2 and generates the alarm signal 5 to notify the abnormality.

FIG. 2 is a block diagram of an actual cooling device 10. A temperature sensor 7 is installed above the discharge motor fan 6, the temperature inside the cooling device 10 is sensed, and the temperature is compared with a set temperature to rotate the device. Change the number and exhale air in the direction of the arrow.

The suction motor fan 8 has a temperature sensor 7 installed near the cooling unit 9 so that the ambient temperature of the cooling unit 9 can be sensed and air can be blown in the direction of the arrow with the best air volume.

[0014]

As described above, according to the present invention, the temperature inside the device is constantly monitored by mounting the temperature sensor and the rotation speed variable control unit, and the place to be cooled with the air volume most suitable for the environmental use of the device is cooled. This has the effect of reducing power consumption and noise.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a cooling device of the present invention.

FIG. 2 is an actual configuration diagram of a cooling device of the present embodiment.

FIG. 3 is a block diagram of a conventional cooling device.

FIG. 4 is a diagram showing control of switching the rotation speed of a conventional cooling device.

[Explanation of symbols]

 1 Input power supply 2 Sensor output signal 3 Ground 4 Temperature sensor output signal 5 Alarm signal 6 Exhaust motor fan 7 Temperature sensor 8 Suction motor fan 9 Cooling unit 10 Air-cooling device 11 Changeover switch 21 Rotating unit 22 Motor unit 23 Rotation speed variable control unit 24 Alarm circuit 25 Variable resistor

Claims (1)

[Claims] 1. A sensor capable of sensing a temperature, a circuit for generating a set temperature, a comparator for comparing a sensor output from the sensor with the set temperature, and a fan rotating according to a change in output from the comparator. A cooling device comprising: