| 摘要 |
PURPOSE:To improve heat radiation and to prevent the expansion and contraction of a tank drum, by forming the tank drum made of a thin plate in a zigzagging shape, thereby increasing the contact surface with refrigerant. CONSTITUTION:In a tank 7, a tank drum 7b, which is made of a thin plate, whose outer surface has a zigzagging shape 7a, is horizontally arranged. Both ends of the tank drum 7b are closed with end plates 7c. The tank drum 7b is formed by drawing a circular cylinder. The temperature of a liquid phase part 3a is increased with the heat of a semiconductor 4, which emits the heat, and the liquid is boiled. The stream of the liquid-phase part 3a, whose temperature is increased, is regulated with a guide plate 12, and convection is generated effectively. Vaporized flon gas 3 becomes a vapor phase 3b and rises up in the tank 7. Heat is absorbed by the flon 3. The heat is radiated from the approximately entire surface of the tank drum 7b in the zigzagging shape 7a. Thus the cooling efficiency can be enhanced. The expansion and contraction of the tank drum in the zigzagging shape 7a can be prevented by attaching the both end parts of the guide plate 12 to both end plates.
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