| 摘要 |
PURPOSE:To improve the comfortability, by providing a guideboard facing against an inlet piping in a hot water tank, in a heater core of a reheat air- conditioner for vehicle, while furthermore providing means for driving the guideboard and enlarging the space between the guideboard and the inlet piping. CONSTITUTION:Engine cooling water flows through an inlet piping 14 into an inlet tank section 11, then flows through a heatexchanger 1 to an outlet tank 12 and an outlet piping 15. If a large quantity of hot water flows at this time, the temperature at the outlet tank section 12 increases to function a coil spring 16 made of a shape memory alloy so as to move a guideboard 17 in the direction departing from the inlet piping 14 while resisting against a bias coil spring 18. Consequently, the resistance of the hot water path is reduced so as to prevent lowering of the hot water flow when the maximum warming capacity is required. On the contrary, when a small quantity of hot water flows, the guideboard 17 approaches to the inlet piping 14 through the function of the bias spring coil 18. With such arrangement, the comfortability can be improved. |
