JP2001077251A - Heat exchanging element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanging element, which has high efficiency due to a large area and rapidly exchanges heat with cold air current or other fluids. SOLUTION: Metal particles B in folds 11 of a radiating piece are heated in a baking vessel, so that contracting points 111 are welded to each other while irregular gaps formed between the metal particles B. The respective folds 11 are welded to a bottom plate 112 to be utilized for heat radiation inside a computer or various kinds of electric appliances. Heat is transferred from the bottom plate 112 to the metal particles B in the folds 11. Then, air is sent to the folds 11 by using a fan in order to radiate heat. Consequently, a cooled air current flows through the gaps 12 between the metal particles B, and thus heat exchange is efficiently carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a heat exchange element.

[0002]

2. Description of the Related Art A general heat exchange element uses a heat radiating piece or a heat conducting piece manufactured by aluminum molding so that an air flow passes through a fold of the heat radiating piece or another fluid passes through the heat conducting piece. It has become.

[0003]

However, when the air flow passes through the folds of the heat radiating piece or another fluid passes through the heat conducting piece, only the heat of the surface of the fold is transmitted because the heat exchange area is small. It is not efficient. In terms of fluid heat conduction, heat is applied from the outside of the tube and transfers heat to the fluid inside the tube, but the speed at which the fluid passes is extremely high, and the heat exchange location is Limited to only the walls. In addition, the heat sent out by the fluid only convects internally due to the heat exchange of a part obtained by the fluid,
The temperature of the fluid to be delivered is not constant, but may be high or low. Therefore, whether it is for industrial use or for home use, considerable inconvenience arises.

Accordingly, it is an object of the present invention to provide a heat exchange element having a large heat exchange area and high heat exchange efficiency, and capable of quickly exchanging heat with a cold air flow or another fluid.

[0005]

According to the heat exchange element according to the first aspect of the present invention for solving the above-mentioned problems, metal particles having a high heat conductivity are put in a mold, heated in a pot, and heated. At the same time, the contact points of the individual metal particles are welded and integrated, and at the same time, a gap is formed between the individual metal particles to provide a path for heat exchange. The molten metal particles pass through the heat. Due to the heat conduction between the metal grains and the heat exchange in the myriad of gaps, the heat exchange area is large and the heat exchange efficiency is high, so that when the airflow or other fluid passes through the gaps, the heat exchange is performed quickly.

According to the heat exchange element of the second aspect of the present invention, the size and material of the metal particles can be changed according to the application. Therefore, since gaps of various sizes can be formed as required, it is possible to cope with fluids and airflows having different properties, and it can be applied to various places and uses.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First, as shown in FIG. 1, a heat exchange element according to an embodiment of the present invention uses metal particles B as a material,
Make the mold according to the required shape and location. Then, metal particles B such as copper particles and stainless steel particles are put into the mold A. The mold is vibrated so that the metal grains B do not become hollow in the mold (vibration step C), and the metal grains B in the mold A are made dense. Next, type A
Is put into a baking oven D, heated, and the contacts of the individual metal grains B are welded and molded, then cooled and removed from the mold (mold removing step F) to form an integrated mass of metal grains. . At this time, the metal grains B are bonded to each other to form an irregular gap between the metal grains. As a result, the heat exchange area increases as shown in FIG.

FIG. 2 shows the shape of the heat radiating piece 1 as a heat exchange element. The folds 11 of the heat radiating piece 1 heat the metal grains B in the baking oven D to weld the contact points 111 to each other, and at the same time, form irregular gaps between the metal grains B. Each fold 11 is welded to the bottom plate 112 and can be used for heat radiation inside the computer or for heat radiation of various electric appliances. Heat is transmitted from the bottom plate 112 to the metal grains B of each fold 11. Then, the wind is sent to the pleats 11 by using the fan and the heat is radiated, so that the cooled air flows through the gaps 12 between the metal particles B, and heat exchange is effectively performed.

Each of the metal grains B is separated by the baking oven D
Are welded. With this method, the shape can be changed according to the application. For example, as shown in FIG. 3, the heat exchange element rod 2 is used for heat exchange of a fluid by welding metal grains B ′ inside the rod irregularly. The heat exchange element rod 2 is placed in a metal tube and heat is transferred by contacting the inner wall of the metal tube. When heat is applied from outside the metal tube, the heat is transmitted to the heat exchange element rod 2 in the tube through the metal tube,
The heat is evenly distributed to the metal particles B ′. The fluid flows through the gaps between the metal particles B ′, and heat exchange is performed. The temperature of the discharged fluid is stable on average, and heat exchange is performed effectively.

The size and material of the heat exchange element according to the present embodiment can be changed like the metal particles B and B 'according to the application.
And can accommodate airflow or other fluids of different nature.

[0011]

According to the heat exchange element of the present invention, since metal particles having a high heat conductivity are used as materials, the contact points of the metal particles can be welded to each other by sintering the metal particles. At the same time, irregular gaps are formed between the individual metal grains.
Therefore, in addition to the original heat conduction effect and heat distribution, heat exchange is performed when an air flow or other fluid flows through the gap, and the effect that the heat exchange area increases and more efficient heat exchange is possible. Have.

[Brief description of the drawings]

FIG. 1 is a manufacturing process diagram of a heat exchange element according to an embodiment of the present invention.

FIG. 2A is a perspective view showing a heat radiating piece according to one embodiment of the present invention, and FIG. 2B is a schematic diagram showing an enlarged part of the heat radiating piece.

FIG. 3 is a perspective view showing a heat exchange element rod according to an embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 heat exchange element heat radiation piece 2 heat exchange element rod 11 fold 12 gap 111 metal particle contact point 112 bottom plate

Claims (2)

[Claims] 1. A metal mold is formed as a material, a mold corresponding to a shape is prepared, the metal grain is put in the mold, and the mold is vibrated so that the metal grains put in the mold are dense. ,
The metal particles placed in the mold are placed in a baking oven and heated, the contact points of the metal particles are welded, and after cooling, the welded metal particles are removed from the mold. A heat exchange element wherein the contacts of the individual metal grains are connected and irregular gaps are formed between the individual metal grains to increase the area of heat exchange. 2. The heat exchange element according to claim 1, wherein the size and material of the metal particles can be changed according to the application.