JP2703364B2 - Cooling system using metal hydride - Google Patents

Description

The present invention relates to a cooling device using a metal hydride.

(B) Conventional technology In recent years, various cooling devices utilizing an endothermic reaction when a metal hydride releases hydrogen have been proposed. For example, as disclosed in JP-A-57-92670, A cooling device has been proposed in which a reaction vessel filled with a compound is moved between heat mediums having different temperatures, thereby eliminating the need for a complicated heat medium circuit and a control mechanism therefor.

(C) Problems to be Solved by the Invention However, the cooling method disclosed in Japanese Patent Application Laid-Open No. 57-92670 has a drawback that cooling operation is not performed while hydrogen is returned to the cold-heat generating reaction vessel by heating. Further, since heat exchange between the reaction vessel and the heat medium is performed by contact between the reaction vessel wall and the heat exchange vessel wall, the movement of the reaction vessel requires a large power to resist frictional force.

(D) Means for Solving the Problems The present invention has been made in view of such a point, and is filled with two kinds of metal hydrides having different hydrogen pressure-temperature equilibrium characteristics, and mutually filled with hydrogen piping. Connected first and second
A plurality of containers are arranged in a cylindrical shape, a rotating body rotatable about the central axis of the cylinder as a rotation axis, a cold-heat generating unit provided on the first container side of the rotating body, and a first A normal temperature part, a high temperature part provided on a second container side corresponding to a diagonal position of the cold heat generating part, and a high temperature part provided on a second container side corresponding to a diagonal position of the first normal temperature part A second normal temperature part.

(E) Action When the first and second containers having the above structure are moved to a position where the second container side can exchange heat with the high temperature part and the first container can exchange heat with the first normal temperature part, a high pressure is applied. From the second container side of the first
Hydrogen moves to the first container side and is stored in the first container side. The second container side shows a tendency to lower the temperature and lower the pressure due to the endothermic effect accompanying the release of hydrogen, but the high temperature and the high pressure state are maintained by heating in the high temperature part. On the other hand, the first container side shows a tendency to increase in temperature and pressure due to the exothermic effect accompanying the occlusion of hydrogen,
The heat is radiated by the cooling medium in the first room temperature section (the above-described process is hereinafter referred to as a regeneration process).

Next, by rotating the first and second containers, when the second container side moves to a position where heat can be exchanged with the second normal temperature part, the high temperature state of the second container side is returned to normal temperature, On the other hand, since the first container side is in the cold heat generating section in a state where hydrogen is stored, hydrogen is released from the first container side and stored in the second container side. Since the first container emits hydrogen in an endothermic manner, cold heat is generated on the first container side, efficient heat absorption is performed by turning the fan, and cooling of the cooled space (generation of cold heat) is achieved. You. On the other hand, since the low pressure state is maintained on the second container side by the second normal temperature part, hydrogen transfer is effectively performed (this process is hereinafter referred to as a cold heat generation process).

(F) Example Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 3 shows a hydrogen pressure-temperature equilibrium characteristic diagram of two kinds of metal hydrides used in the cooling apparatus of the present invention, and FIG. 2 shows first and second hydrogen hydrides filled with the metal hydride having the characteristics shown in FIG. FIG. 1 is a configuration diagram of a cooling device configured by using the reaction container of FIG. 2.

First, the second will be described. Reference numeral 1 denotes a reaction vessel containing two kinds of metal hydrides having hydrogen pressure-temperature equilibrium characteristics shown in FIG. 3, and the second vessel (1a) is denoted by II.
LaNi ₅ based metal hydride M ₂ H, indicated by I in the first container
MmNi _5- based metal hydride M ₁ H is stored, and both are connected by a hydrogen pipe (3). A plurality of reaction vessels (1) comprising the two kinds of metal hydrides and a hydrogen pipe (3) and a heat insulating material (2) for insulating between the vessels (1a) and (1b).
Are arranged in a cylindrical shape symmetrical with respect to the rotation axis to form a rotating body (R). In addition, (5) is a heat insulating material that shuts off the heat medium and the outside air, and rotates together with the reaction vessel (1).

Next, the operation principle of the present cooling device will be described with reference to FIG. (9) is a cold heat generating part formed on the first container (1b) side, and is blown by a fan (13).
(8) indicates a first normal temperature portion provided on the first container (1b) side, and air is blown at normal temperature by the fan (11). (7) is a high-temperature portion formed on the side of the second container (1a) located diagonally to the cold heat generating portion (9), and hot air is sent by a fan (12). (10) is a second normal temperature section formed on the side of the second container (1a) which is located at a diagonal of the first normal temperature section (8), and blows the fan (1) at normal temperature.
Performed by 1).

In such a configuration, a regeneration process is performed between the high temperature section (7) and the first normal temperature section (8), and hydrogen is stored in the second container (1a).
From the side to the first container (1b) side (from left to right in FIG. 1 (a)). Next, when the rotating body (R) is rotated by 180 ° in the direction of the arrow in FIG. 1B by driving a motor (not shown) or the like (actually, the rotating direction may be either)
The side of the second container (1a) is located in the second room temperature section (10), and the side of the first container (1b) is located in the cold heat generating section (9). That is, the first container (1b) releases hydrogen when absorbing heat, and removes heat from the cold heat generator (9) to cool.
At this time, the regeneration process is performed between the remaining first and second containers (1b) and (1a) on the high temperature section (7) and the first normal temperature section (8). As described above, the upper and lower halves (FIG. 1 (a)) of the rotating body (R) are alternately subjected to the regeneration process and the cold generation process with the heat insulating material (6) as a boundary, so that the cold generation is intermittent. Without this, continuous cooling operation can be performed. The first and second containers (1b) and (1a) filled with metal hydride are divided into a plurality of parts as shown in FIG. 1 (b) and sent by fans (11) to (14). The structure is such that efficient heat exchange with the heat medium at each temperature can be performed.

As shown in FIG. 4, a damper (16) is provided on a heat insulating material (6) by applying a method of generating cold heat by intermittent rotation, and a rotating body (R) is rotated by 180 ° to generate cold heat. When replacing the container (1b), the cold heat generation part (9) is temporarily
And the air in the first normal temperature section (8) may be stirred. Thereby, the first container (1b) moved to the cold heat generating section (9) is cooled in advance, and the rising of the cold heat generating process is quickly performed. When the cold heat generation process is completed, the damper (16) returns to its original position and the cold heat generation unit (9)
And the first room temperature section (8) is shut off. Such a structure may be provided in the second normal temperature section (6) and the high temperature section (7).

FIG. 5 shows the first and second containers constituting the rotating body (R) formed in a thin tube shape, and the containers are uniformly arranged in a cylindrical shape with an interval between the containers. By rotating such a rotating body (R) at a constant speed by the power of a motor or the like, the cold heat generation process and the regeneration process can be continuously performed. The container passing hole (17) provided in the heat insulating material (6) is closed by an elastic member (18), and the hole (17) is opened only when the container passes.

(G) Effect of the Invention As described above, the cooling device of the present invention is filled with two kinds of metal hydrides having different hydrogen pressure-temperature equilibrium characteristics, and the first and second containers connected to each other by a hydrogen pipe are connected. A rotating body configured to be arranged in a plurality of cylinders and rotatable about the center axis of the cylinder, a cold-heat generating unit and a first normal-temperature unit provided on the first container side of the rotating body; A high-temperature portion provided on a second container side corresponding to a diagonal position of the cold heat generating portion and a second high-temperature portion provided on a second container side corresponding to a diagonal position of the first normal temperature portion. Since it has two containers, it is possible to perform the cooling and heat generation process and the regeneration process, and it is possible to perform uniform cooling.

[Brief description of the drawings]

FIGS. 1 (a), 1 (b) and 1 (c) are a schematic longitudinal sectional view, a schematic sectional side view and a schematic cutaway view, respectively, of a cooling device utilizing metal hydride of the present invention, and FIG. Perspective view, FIG.
Is a perspective view of a container, FIG. 3 is a characteristic diagram of a metal hydride used in the present invention, and FIGS. 4 and 5 are side sectional views showing another embodiment. (1) ... container, (2) (4) (5) (6) ... heat insulating material, (3) ... hydrogen piping, (7) ... high temperature part, (8) ...
.. A first normal temperature part, (9) a cold heat generating part, (10) a second normal temperature part, (11) (12) (13) (14) a fan.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takahiro Yonezaki 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-59-81469 (JP, A) 3-102147 (JP, A) JP-A-61-285358 (JP, A)

Claims (1)

(57) [Claims] 1. A container comprising a plurality of first and second containers filled with two types of metal hydrides having different hydrogen pressure-temperature equilibrium characteristics and connected to each other by a hydrogen pipe. A rotating body that is rotatable around the center axis of
A cold-heat generating section and a first normal-temperature section provided on the first container side of the rotating body; a high-temperature section provided on a second container side corresponding to a diagonal position of the cold-heat generating section; A cooling device utilizing metal hydride, comprising: a second normal temperature portion provided on a second container side corresponding to a diagonal position of the first normal temperature portion.