HEAT EXCHANGER AND HEATING METHOD AND HEATING DEVICE OF VEHICLE UTILIZING THE HEAT EXCHANGER

摘要

PURPOSE: A heat exchanger and heating method and a heating device of a vehicle utilizing the heat exchanger are provided to heat vehicle room regardless of warming up and to reduce discharge time of exhaust gas from incomplete combustion by heating coolant in starting in winter. CONSTITUTION: Coolant is circulated with a water jacket of an engine and a heater core(30) in a vehicle. Coolant supplied to the heater core is heated with an additional heater and heat is exchanged while passing air from an indoor unit or outdoor unit to the heater core passing through the heated coolant. The vehicle room is heated with supplying air heated by the heater core to each portion of the vehicle. Heating is performed regardless of warming up with heating coolant at the initial stage of starting in winter, and safety is improved with defrosting in starting. Stabilization time of heating is reduced with heating promptly.