US Patent:
20200224938, Jul 16, 2020
Inventors:
Michael R. Jackson - Woonsocket RI, US
Christopher Seith - Franklin MA, US
Nathan Barrett - Milford MA, US
Kara O'Donnell - Watertown MA, US
Neal B. Almeida - Cumberland RI, US
Wen Lu - Westborough MA, US
James E. Usowicz - Webster MA, US
Maruth Sok - Providence RI, US
Kurt D. Joudrey - Chelmsford MA, US
Joshua A. Shreve - Acton MA, US
Assignee:
Waters Technologies Corporation - Milford MA
International Classification:
F25B 25/00
G01N 30/30
B01D 15/40
B01D 15/18
Abstract:
The present disclosure relates to methodologies, systems and apparatus for cooling pump heads and providing balanced cooling and heat transfer between multiple pump heads. Multi-pump systems that are used to pump fluids that vary greatly in density with minor changes in temperature, such as the mobile phase of a C02-based chromatography system, require highly stable temperature conditions. In order to achieve a substantially equal average heat transfer between multiple pump heads and a coolant fluid, coolant fluid may be flowed through coolant passageways within the pump heads in a recursive and/or parallel coolant flow patterns. Such recursive and/or parallel coolant fluid flow patterns provide increased stability in temperature, compressibility, and density of the fluids passing through a multi-pump system.