Patent ID: 6446449
Filing Date: 2002-09-10
Classification: B23Q,F25B,F25D

Abstract:
In a cooling installation for a machine tool having a circulation system in which a coolant circulates, wherein the coolant is conducted to a tempering device of the machine tool, wherein a metering unit is assigned to the circulation system for metering an external coolant to the coolant circulating in the circulation system, and wherein the metering unit is controlled by a control device, the improvement comprising:the circulation system (40) having a reservoir (22) formed by a partial tank (22.1) and a buffer tank (22.2), the coolant conducted into the buffer tank (22.2), the metering unit (27) metering the external coolant into a return flow from the tempering device (26) and into the circulation system (40) upstream of the buffer tank (22.2), and the metering unit (27) controlling the return flow as a function of a temperature difference between a first temperature of the coolant in the buffer tank (22.2) and a second temperature at the tempering device (26).