Patent ID: 6234766
Filing Date: 2001-05-22
Classification: F04B

Abstract:
A pump system for pumping a hot medium comprising:at least one displacement pump, and at least one bidirectional flow pipe, said bidirectional flow pipe having first and second ends and being connected at the first end, via a first one-way valve, to a supply pipe for drawing an amount of a medium from said supply pipe, and also being connected, via a second one-way valve, to a discharge pipe for discharging an identical amount of the medium from said bidirectional flow pipe, said bidirectional flow pipe being connected at the second end to a second pipe, which is provided with a heat exchange mechanism, with said second pipe being connected at its other end to a pump chamber of the displacement pump, wherein at least the second pipe is accommodated in a substantially horizontal plane in the system and an expansion accommodating feature is associated with the displacement pump such that said displacement pump is movable under the influence of changes in length of one or both of the second pipe and bidirectional flow pipe.