Patent ID: 6185953
Filing Date: 2001-02-13
Classification: F24F,F25B,F25D

Abstract:
A heat transport system comprising:a refrigerant circuit (B) constituted such that heat exchange means (1) on a heat source side is connected to heat exchange means (3) on an application side through a gas pipe (6) and a liquid pipe (7) so as to circuit a refrigerant therein, the heat exchange means (1) on the heat source side exchanging heat with heat source means (A);at least one first tank means (T1) and at least one second tank means (T2), which are connected to parallel to the liquid pipe (7) and which reserve a liquid refrigerant therein;pressure regulating means (18) for alternately switching a first pressure state, in which an internal pressure of the first tank means (T1) is raised and an internal pressure of the second tank means (T2) is lowered, and a second pressure state, in which the internal pressure of the first tank means (T1) is lowered and the internal pressure of the second tank means (T2) is raised; andrefrigerant control means (H) for supplying the liquid refrigerant from the first tank means (T1) to any of the heat exchange means to be an evaporator and recovering the liquid refrigerant from any of the heat exchange means to be a condenser to the second tank means (T2) during the first pressure state of the pressure regulating means (18), and for supplying the liquid refrigerant from the second tank means (T2) to any of the heat exchange means to be an evaporator and recovering the liquid refrigerant from any of the heat exchange means to be a condenser to the first tank means (T1) during the second pressure state, thereby circulating the refrigerant of the refrigerant circuit (B) and making the heat exchange means (3) on the application side continuously absorb or radiate heat;wherein the pressure regulating means (18) includes: pressurizing means (50) for performing a pressurizing operation of pushing the liquid refrigerant in one of the first tank means (T1) and the second tank means (T2) to the liquid pipe (7) by raising the internal pressure of the one tank means (T1 or T2); and pressure reducing means (60) for performing a pressure reducing operation of recovering the liquid refrigerant from the liquid pipe (7) to the other tank means (T2 or T1) by lowering the internal pressure of the other tank means (T2 or T1),and the pressure reducing means (60) includes a circulating condenser (61), which is connected to the respective tank means (T1, T2) and which lowers the internal pressure of each said tank means (T1, T2) by condensing the refrigerant, such that a condensing pressure of the circulating condenser (61) is set lower than a condensing pressure of the heat exchange means to be the condenser,and the pressure regulating means (18) makes the pressurizing means (50) pressurize the first tank means (T1) and makes the pressure reducing means (60) reduce a pressure of the second tank means (T2) during a first pressure state, and the pressure regulating means (18) makes the pressurizing means (50) pressurize the second tanks means (T2) and makes the first pressure reducing means (60) reduce a pressure of the first tank means (T1) during a second pressure state;and the heat source means (A) includes: first heat exchange means (12) for exchanging heat with the heat exchange means (1) on the heat source side; and second heat exchange means (72) for exchanging heat with the circulating condenser (61),such that during heat absorption running of the heat exchange means (3) on the application side, an evaporating temperature of other first heat exchange means (12) and an evaporating temperature of the second heat exchange means (72) are equal to each other but a ratio of a capacity of the circulating condenser (61) to a flow rate of the refrigerant flowing through the second heat exchange means (72) is set larger than a ratio of a capacity of the heat exchange means (1) on the heat source side to a flow rate of the refrigerant flowing through the first heat exchange means (12).