| 摘要 |
PROBLEM TO BE SOLVED: To provide a cold water manufacturing device capable of reducing the change width of a water temperature of water to be manufactured and enabling the water temperature to change near a set temperature as low as possible.SOLUTION: A cold water manufacturing device comprises: a refrigerant circulation unit 12 in which a refrigerant passing through a heat exchanger 20 circulates; and a water circulation unit 14 through which water passing through the heat exchanger 20 circulates, and which manufactures cold water by cooling the water by the refrigerant in the heat exchanger 20 so that a water temperature is equal to a set temperature T0. The refrigerant circulation unit 12 stop operating if the water temperature falls below a lower limit temperature Td lower than the set temperature T0, and resumes operating if the water temperature exceeds an upper limit temperature Tu higher than the set temperature T0. Furthermore, the water temperature of the water flowing in the heat exchanger 20 increases at timing at which the refrigerant circulation unit 12 stops operating, thus accelerating return of the refrigerant circulation unit 12. |
