Data Processor Cooling With Connection to Maintain Flow Through Standby Pump
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08
In the water-cooling circuit of a data processing system, a plurality of pumps are connected in series and each pump is paralleled by a bypass valve that opens automatically whenever the upstream pressure is higher than the downstream pressure. In normal operation, only one of the pumps is turned on and cooling water flows through the operating pump and through the automatic bypass valves that parallel the other pumps. The bypass valves have a small flow resistance, and a small amount of cooling water also flows through the idle pumps. It has been found that some kinds of pump seal corrosion are associated with stagnant water in the housing of a pump that has been idle. This system maintains an effective minimum flow through the pump housing and it does not require additional components.