| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling medium circulation device capable of improving heating efficiency at a refrigeration cycle.SOLUTION: A cooling medium circulation device 5 mounted on a heatable and coolable vehicle by using a refrigeration cycle 2 includes a device heat exchanging part 51 for exchanging heat between a cooling medium and a heating device, a heat radiation part 52a for radiating the heat of the cooling medium, and a cooling medium heat exchanging part 52c for exchanging heat between the cooling medium and the refrigerant of the refrigeration cycle 2. First flow paths 55a, 57a and 59a are formed to distribute the cooling medium through the heat radiation part 52a, the cooling medium heat exchanging part 52c and the device heat exchanging part 51 during cooling, and second flow paths 55b, 57b and 59b are formed to distribute the cooling medium through the cooling medium heat exchanging part 52c and the device heat exchanging part 51 by bypassing the heat radiation part 52a or distribute the cooling medium through the heat radiation part 52a after passed through the device heat exchanging part 51 and the cooling medium heat exchanging part 52c during heating.SELECTED DRAWING: Figure 2 |
