| 摘要 |
PURPOSE: A heater of a vehicle is provided to improve the cooling efficiency of cooling water by increasing the flow rate of the cooling water circulating to an engine when the distance between the engine and a heater core is long or the difference of water head is large and to enhance heating efficiency. CONSTITUTION: A heater core of a vehicle comprises a heater core and a pumping unit. The heater core has plural tubes(11) and cooling fins(12). The pumping unit is prepared on the cooling water path between an inlet pipe(15) and an outlet pipe(16) to facilitate the flow rate of the cooling water flowing into an engine via the outlet pipe. While the cooling water circulates, the flow rate of the cooling water circulating through the outlet pipe is increased by the pumping unit. A propeller rotating by the air blown from a blower is prepared outside a lower header(14), and an impeller(50) rotating with a shaft supporting the propeller is prepared in the middle of the lower header. When the propeller rotates with the shaft, the cooling water supplied from the inlet pipe is forcedly pumped to the outlet pipe. Therefore, the cooling efficiency of the cooling water and heating efficiency are improved.
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