Inventors:
H. Kenneth Ring - Houston MN
Jon P. Hartfield - La Crosse WI
Sean A. Smith - La Crosse WI
William J. Peck - Pueblo CO
Assignee:
American Standard International Inc. - New York NY
International Classification:
F25B 4302
US Classification:
62471, 62470, 62515, 62473, 62506, 62193, 62469
Abstract:
An evaporator for a refrigeration chiller includes a tube bundle in which at least a portion of the tubes of the tube bundle are immersed in a pool which include both liquid refrigerant and is lubricant. Liquid refrigerant and lubricant are deposited into the pool at a first pool location. Because of the vaporization of refrigerant that occurs within the pool, a pattern of flow is established and managed that causes the lubricant in the pool to migrate from the location of its deposit into the pool to a second pool location. An outlet is provided at the second pool location from which lubricant is drawn out of the evaporator.