JP2001077566A - Cooling element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To utilize the heat of vaporization of water for effective cooling by a very simple constitution by providing a casing made of metal and a fan installed in the casing, and filling the casing with water. SOLUTION: A heating element constituting an electronic circuit or the like is placed on the surface of a casing 1 made of metal, and when the electronic circuit is driven, a cooling element cools the heating element. Specifically, heat generated by the heating element transmits through the casing 1 to heat water 3 filled therein. The water 3 rises between comb-like fins 2, and is distributed in the casing 1 in such a form that the water spreads very thin. Thus the water 3 is vaporized by heat from the casing 1. This vaporization of water requires a quantity of heat of 536 cal/g, and this quantity of heat is received from atmospheric temperature through the heating element and condensing fins 6. That is, the heating element placed on the surface of the casing 1 is cooled by the heat of vaporization of 536 cal/g. Thus the heating element is cooled highly efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling element used for cooling electronic circuits and the like.

[0002]

2. Description of the Related Art Conventionally, electronic circuits and the like are cooled by air using a fan, by using a radiation fin, by using a combination of a radiation fin and a fan, or by using a Peltier element. is there.

[0003]

The conventional configuration using a fan or a radiation fin uses air as a heat exchange medium, and cannot produce a temperature difference equal to or lower than the air temperature. And the cooling efficiency is low.

In the case of using a Peltier device, a DC voltage must be applied to make the device itself function, which has problems in terms of space and cost.

[0005]

SUMMARY OF THE INVENTION The present invention comprises a metal container and fins provided in the container, and has a very simple structure in which water is stored in the container. The purpose of the present invention is to realize a cooling element that can use the heat of vaporization for cooling and can perform efficient cooling.

[0006]

The invention according to claim 1 comprises a metal container and fins provided in the container.
As a configuration in which water is stored in the container, a cooling element that can utilize the heat of vaporization of water for cooling with a very simple configuration and that can perform efficient cooling.

According to a second aspect of the present invention, there is provided a metal container, and a pin provided in the container, wherein the container accommodates water. Is used for cooling, and is a cooling element capable of efficient cooling.

According to a third aspect of the present invention, the fin is a comb-shaped cooling element capable of promoting the evaporation of water contained therein by utilizing a capillary phenomenon and capable of efficient cooling. .

According to a fourth aspect of the present invention, a fin having a corrugated cross section is used as a cooling element capable of increasing the surface area of the fin and efficiently cooling.

According to a fifth aspect of the present invention, the fin is a cooling element capable of more reliably utilizing a capillary phenomenon and being capable of efficient cooling, as a structure subjected to a hydrophilic treatment.

According to a sixth aspect of the present invention, the pins are provided at such dense intervals that the contained water can rise by capillary action, and the pins are provided inside by utilizing the capillary action. The cooling element is capable of promoting evaporation of the contained water and capable of efficient cooling.

According to a seventh aspect of the present invention, the metal container has a hole for exchanging water. It can be changed to a cooling element capable of efficient cooling.

The invention described in claim 8 is a cooling element in which water is distilled water, which can prevent the deterioration of hydrophilicity due to impurities, and can perform efficient cooling.

According to a ninth aspect of the present invention, the container or the fin is made of aluminum, copper, silver, gold or platinum or an alloy or a clad material using the metal to efficiently cool heat generated from the object to be cooled. The cooling element can be conducted to the element and can be cooled efficiently.

According to a tenth aspect of the present invention, the container or the pin is made of aluminum, copper, silver, gold or platinum or
As an alloy or clad material using the metal, heat generated from the object to be cooled can be efficiently transmitted to the cooling element,
The cooling element enables efficient cooling.

[0016]

Embodiments of the present invention will be described below. 1 and 2 are cross-sectional views showing the configuration of the cooling element of the present embodiment. The cooling element of the present embodiment includes a metal container 1, a metal fin 2 provided in the container 1, and a switching valve 4.
And water contained in the container 1.
The fins 2 are integrated with the container 1 in the upper part, and are provided in a comb-like shape with an interval such that the contained water rises by capillary action. The switching valve 4 is configured to be movable about an axis at the center, and in a vertically standing state as shown in FIG. It is what constitutes. Further, when the switching valve 4 is in a horizontal state as shown in FIG. 1, the contained water comes into contact with the fins 2.

Further, a metal condensation fin 6 is provided on a side surface of the container 1. The condensing fins 6 are integrated with the container 1 and transmit the ambient temperature into the container 1.

The operation of the embodiment will be described below. When a heating element constituting an electronic circuit or the like is placed on the surface of the metal container 1 and the electronic circuit is driven, the cooling element cools the heating element. That is, the amount of heat generated by the heating element transfers the heat to the container 1 and heats the water 3 contained therein.
The water 3 rises between the comb-shaped fins 2 by capillary action, and is distributed in the metal container 1 in a very thin form. Therefore, this water is vaporized by the heat transfer from the metal container 1. This vaporization requires a calorific value of 536 cal / g, and this calorie is received from the ambient temperature through the heating element and the condensing fins 6. That is, the heating element mounted on the surface of the metal container 1 is cooled by the heat of vaporization of 536 cal / g. In this way, the heating elements are cooled very efficiently.

The water 3 is present in a large amount in the container 1 and always rises between the comb-shaped fins 2 by capillary action, so that there is no shortage of water during cooling. .

When the cooling is completed, the vaporized water condenses and collects again in the container 1 as a liquid.

As described above, according to this embodiment, since the container 1 made of metal and the fins 2 provided in the container 1 are provided, and the water 3 is stored in the container 1, The heat of vaporization of water can be used for cooling with a very simple configuration,
A cooling element capable of efficient cooling is realized.

At this time, as shown in FIG.
Similarly, even when the pin 7 is used in place of the fin, the heat of vaporization of water can be used for cooling with a very simple configuration.
A cooling element capable of efficient cooling is realized.

Further, in this embodiment, since the fins 2 or the pins 7 are formed in a comb shape, the water can easily rise due to the capillary phenomenon, so that the water distributed in the space can be made thin and the vaporization is very easy. It becomes something. That is, a cooling element capable of efficient cooling is realized.

If the cross-sectional shape of the fins 2 is corrugated, the surface area of the fins 2 can be increased and the vaporization area of water can be increased, thereby realizing a cooling element capable of more efficient cooling. .

Further, by making the surface of the fin 2 hydrophilic, the use of the capillary phenomenon can be performed more reliably. As the hydrophilic treatment, for example, Si, Al,
A method of providing a metal oxide containing a metal element such as Ti on the surface can be considered. With this configuration, the surface can be provided with OH groups so that hydrophilicity can be imparted.

At this time, if a hole is made in an appropriate place of the metal container 1, the water 3 contained therein can be exchanged by using the hole, so that it can be used for a long time. On the other hand, the present invention realizes a cooling element capable of changing the contained water to new water and performing efficient cooling.

Further, if the water 3 used is distilled water, a fin 2 or the like is not clogged by impurities and the capillary phenomenon is not impaired, thereby realizing a cooling element capable of efficient cooling. is there.

The container 1 or the fins 2 or the pins are made of aluminum, copper, silver, gold or platinum or an alloy or a clad material using the above-mentioned metal, and have high thermal conductivity and can be efficiently cooled. This realizes a cooling element.

[0029]

According to the first aspect of the present invention, there is provided a metal container and fins provided in the container. This realizes a cooling element that can utilize the heat of vaporization for cooling and can perform efficient cooling.

According to a second aspect of the present invention, there is provided a metal container, and a pin provided in the container, wherein the water is stored in the container. Is used for cooling, thereby realizing a cooling element capable of efficient cooling.

According to the third aspect of the present invention, the fins are formed in a comb shape so that the water contained in the fins can be promoted to evaporate by utilizing the capillary phenomenon, thereby enabling efficient cooling. An element is realized.

According to a fourth aspect of the present invention, a fin is formed to have a corrugated cross-sectional shape, thereby realizing a cooling element capable of increasing the surface area of the fin and enabling efficient cooling. According to a fifth aspect of the present invention, as the fin is subjected to a hydrophilic treatment, a cooling element capable of more reliably utilizing the capillary phenomenon and capable of efficient cooling is realized.

According to a sixth aspect of the present invention, the pins are provided at intervals such that the contained water can rise by capillary action, so that the heat of vaporization of water is very simple. It is intended to realize a cooling element which can be used for cooling and can be efficiently cooled.

According to a seventh aspect of the present invention, the metal container has a hole for exchanging water, so that the stored water is replaced with new water for a long time use. Thus, a cooling element capable of efficient cooling can be realized.

The invention described in claim 8 realizes a cooling element capable of preventing the deterioration of hydrophilicity due to impurities and having efficient cooling by using distilled water as the constitution.

According to a ninth aspect of the present invention, the container or the fin is made of aluminum, copper, silver, gold or platinum, or an alloy or a clad material using the metal, so that heat generated from the object to be cooled can be efficiently used. Thus, a cooling element capable of efficiently conducting cooling to the cooling element and capable of efficiently cooling is realized.

According to a tenth aspect of the present invention, the container or the pin is made of aluminum, copper, silver, gold or platinum or
As a configuration using an alloy or a clad material using the metal, it is possible to efficiently conduct heat generated from an object to be cooled to the cooling element and to realize a cooling element capable of efficient cooling.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a configuration of a cooling element according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a state where the switching valve is in a vertical state.

FIG. 3 is a cross-sectional view showing a configuration using pins in place of the fins.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal container 2 Fin or pin 3 Water 4 Switching valve 6 Condensing fin

Claims (10)

[Claims] 1. A cooling element comprising a metal container and fins provided in the container, wherein the container contains water. 2. A cooling element comprising a metal container and a pin provided in the container, wherein the container contains water. 3. The cooling element according to claim 1, wherein the fin is comb-shaped. 4. The fin has a corrugated cross section.
The cooling element described in the above item. 5. The fin has been subjected to a hydrophilic treatment.
The cooling element described in the above item. 6. The cooling element according to claim 2, wherein the pins are provided at such an interval that the contained water can rise by capillary action. 7. The cooling element according to claim 1, wherein the metal container has a hole for exchanging water. 8. The cooling element according to claim 1, wherein the water is distilled water. 9. The container or fin may be made of aluminum, copper,
The cooling element according to claim 1, wherein the cooling element is silver, gold, platinum, or an alloy or a clad material using the metal. 10. The container or pin is made of aluminum,
The cooling element according to claim 2, wherein the cooling element is copper, silver, gold, platinum, or an alloy or a clad material using the metal.