Patent ID: 6477990
Filing Date: 2002-11-12
Classification: F01P,F28D,F28F,Y02E

Abstract:
A heat storage tank for storing a cooling liquid of a liquid-cooled engine in a cooling liquid- circuit, the heat storage tank comprising:a tank body in which the cooling liquid is stored; a connection member connected to the tank body for defining a fluid passage communicating with an interior of the tank body through which cooling liquid in the cooling liquid circuit flows; a valve body for opening and closing the fluid passage, wherein: the valve body is constructed to open the fluid passage when a dynamic pressure due to the cooling liquid, larger than a predetermined pressure, is applied to the valve body, and to close the fluid passage when the dynamic pressure smaller than the predetermined pressure is applied to the valve body; the connection member is disposed so that cooling liquid in the cooling liquid circuit flows into the tank body from below upwardly through the fluid passage; the valve body has a density larger than that of the cooling liquid to have a density difference between the valve body and the cooling liquid; and the valve body is disposed to open the fluid passage when the dynamic pressure larger than the predetermined pressure is applied to a lower side of the valve body, and to close the fluid passage by the density difference when the dynamic pressure applied to the lower side of the valve body is smaller than the predetermined pressure.