Heat management device of vehicle

Abstract

To provide a heat management device of a vehicle which suppresses transient drop of flow quantity and contamination of air into a pump at the time of switching heat circuits.SOLUTION: A heat management device of a vehicle is given in which: a first circuit 110 flowing high temperature heat medium is switched by a three-way valve 113; a second circuit 120 and a third circuit 130 flowing low temperature heat medium are switched by a five-way valve 310; revolving speed of a pump 111 increases at the time of switching of the three-way valve 113; revolving speed of pumps 121, 131 increase at the time of switching of the five-way valve 310; and increase of the revolving speed of the pump 111 is restricted when temperature of the high temperature heat medium is a prescribed temperature or more, and increase of the revolving speed of the pumps 121, 131 is restricted when temperature of the low temperature heat medium is a prescribed temperature or more.SELECTED DRAWING: Figure 1

Images