JPH06310887A - Cooling equipment - Google Patents

Abstract

PURPOSE:To reduce useless cooling air for cooling an electronic apparatus. CONSTITUTION:A heat exchange part 3 is installed in an electronic apparatus. A cooling air vent 1 linked with the heat exchange part 3 is equipped with a valve 2 for opening and shutting the cooling air vent 1. The valve 2 is equipped with a spring 6 for energizing the valve 2 in the shutting direction, and an electromagnet 5 or a spring made of shape-memory alloy for energizing the valve 2 in the opening direction. The electromagnet 5 or the spring made of shape memory alloy is connected between the electronic apparatus and a power supply. The valve 2 is opened or shut according to the value of a current flowing into the electronic apparatus via the electromagnet 5 or the spring made of shape-memory alloy. Thereby cooling air more than the necessary amount is not supplied to the electronic apparatus, so that fuel is saved and engine thrust penalty 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 for cooling electronic equipment of an aircraft.

[0002]

2. Description of the Related Art Many electronic devices are mounted on an aircraft, and these electronic devices need to be cooled.

In the conventional cooling of electronic equipment, as shown in FIG. 3, cold air 01 generated in an air conditioner is sent to each electronic equipment 02 through a pipe or a rack and is passed through a heat exchanger of the electronic equipment 02 or directly. I was removing heat from inside.

[0004]

In the conventional cooling of electronic equipment mounted on an aircraft, some electronic equipment may be used with a partial load depending on the operating state, but all electronic equipment is Since the flow rate distribution ratio of the cooling air is determined assuming that the electronic device is operating under load, it is wasteful when the electronic device is often used as a partial load.

The waste of the cooling air for cooling the electronic device has a problem that the fuel is wastefully used or the thrust of the engine is lowered. The present invention is intended to solve the above problems.

[0006]

(1) A cooling device of the present invention is a valve provided in a heat exchange section provided in an electronic device and a cooling air port communicating with the heat exchange section for opening and closing the air port. A spring that is connected to the valve and biases the valve in the closing direction; and an electromagnet that is disposed in the valve and biases the valve in the opening direction and that is connected between the electronic device and the power supply. It has a feature.

(2) The cooling device according to the present invention is characterized in that, in the cooling device according to the above-mentioned invention (1), a spring made of a shape memory alloy is arranged in place of the electromagnet.

[0008]

In the above invention (1), when the electronic device is stopped, no current flows to the electronic device, so that no current flows to the electromagnet and the electromagnet does not generate electromagnetic force. It is kept closed.

On the other hand, a current flows through the electronic device during operation of the electronic device, but since this current also flows through the electromagnet, the electromagnetic force of the electromagnet acts and the valve opens corresponding to the magnitude of the current flowing through the electronic device. The cooling air is supplied to the heat exchange section through the cooling air port, and the electronic device is cooled by generating heat generated in accordance with the magnitude of the electric current flowing in the electronic device.

As described above, it is possible to save more fuel and reduce the engine thrust penalty because it is possible to prevent unnecessary cooling air from flowing to the electronic equipment.

Also in the above invention (2), as in the above invention (1), the valve is kept closed by the spring force when the electronic device is stopped, but when the electronic device is operating,
Since the current flowing into the electronic device passes through the shape memory alloy spring, the shape memory alloy spring generates heat due to its resistance, the temperature rises and contracts to generate tensile force, and the magnitude of the flowing current is changed. Open the valve at the corresponding opening.

Therefore, in the case of the present invention, the above invention (1) is also applied.
As with the above, it is possible to prevent unnecessary cooling air from flowing through the electronic device.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIG.
In this embodiment shown in FIG. 1, a heat exchange section 3 provided in an electronic equipment housing 7 in which an element portion 8 is provided, and a cooling provided in the electronic equipment housing 7 in communication with the heat exchange portion 3 Air vent 1,
It is provided with an electromagnet 5 provided with a valve 2 provided near the cooling air port 1 and connected to a spring 6, and a power supply line 9 connected to the element portion 8 via the electromagnet 5.

In the above, when the electronic device is stopped and no current is flowing from the power source to the element portion 8, the valve 2 is pressed against the cooling air port 1 by the spring 6 and air does not flow.

When a current flows through the element section 8 through the power supply line 9, the electronic device starts to operate, but at this time, the current flows through the electromagnet 5 to the element section 8 and therefore resists the spring 6. The electromagnetic force of the electromagnet 5 acts to open the valve 2 at an opening according to the magnitude of the current.

Therefore, the cooling air enters through the cooling air port 1, passes through the heat exchanger 3, and the heat generated from the element portion 8 is exhausted.

As described above, it is possible to prevent unnecessary cooling air from flowing to the electronic device, and it is possible to save fuel and reduce the engine thrust penalty.

A second embodiment of the present invention will be described with reference to FIG. In the present embodiment shown in FIG. 2, a shape memory alloy spring 11 is used in place of the electromagnet 5 in the first embodiment shown in FIG. 1, and a spring 13 opposed to the shape memory alloy spring 11 is used in place of the spring 6. It is arranged.

In this embodiment, the element portion 8 of the electronic device is used.
Current flows into the element memory 8 via the shape memory alloy spring 11, the shape memory alloy spring 11 generates heat in accordance with the magnitude of the current flowing into the element portion 8, the temperature rises, and the tensile force increases. Therefore, the valve 12 is opened and closed to adjust the flow rate of the cooling air, and the effect is similar to that of the first embodiment.

In the first embodiment, the poppet type valve and the second
Although the butterfly valve is used in the embodiment, it is also possible to use the butterfly valve by the electromagnet operation of the first embodiment and the poppet valve by the shape memory alloy spring operation of the second embodiment. Further, in each of the embodiments, the cooling device using the cooling air is incorporated in the electronic device, but the cooling device may be provided outside the electronic device.

[0021]

According to the cooling apparatus of the present invention, the electronic device is provided with the heat exchange section, the cooling air port communicated with the heat exchange section is provided with a valve for opening and closing the air port, and the valve is closed. By providing a spring that urges in the direction and an electromagnet or shape memory alloy spring that urges in the opening direction, and connecting the electromagnet or the shape memory alloy spring between the electronic device and the power source, the electromagnet or the shape memory alloy The valve opens and closes according to the magnitude of the electric current that flows through the electronic device through the spring made by the manufacturer, and the cooling air is not supplied to the electronic device more than necessary, thus saving fuel and reducing the engine thrust penalty. It becomes possible.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a second embodiment of the present invention.

FIG. 3 is an explanatory diagram of a conventional cooling device for an electronic device.

[Explanation of symbols]

 1 Cooling Air Port 2 Valve 3 Heat Exchange Section 5 Electromagnet 6 Spring 7 Electronic Equipment Housing 8 Element Section 9 Power Line 11 Shape Memory Alloy Spring 12 Valve 13 Spring

Claims (2)

[Claims] 1. A heat exchange unit provided in an electronic device, a valve provided at a cooling air port communicating with the heat exchange unit, for opening and closing the air port, and connected to the valve for urging the valve in a closing direction. And a electromagnet arranged on the valve for urging the valve in the opening direction and connected between the electronic device and a power source. 2. The cooling device according to claim 1, wherein a shape memory alloy spring is provided in place of the electromagnet.