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Y.T. Li Engineering, Inc. Patents
Assignee:
Y.T. Li Engineering, Inc.
Address:
Boxborough, MA
No. of patents:
7
Patents:












Patent Number Title Of Patent Date Issued
5971061 Edge-hanging orbital rod support and drive for vertical tube-type heat exchanger October 26, 1999
A tube-type heat exchanger has a low wear support and drive for a whip rod that orbits over the inner surface of the heat transfer tube to spread a process liquid into a thin falling film. The support and drive includes a conical thrust bearing near the upper end of the rod. An edge of t
5953924 Apparatus, process and system for tube and whip rod heat exchanger September 21, 1999
An apparatus, thermal storage system and method for heat exchange using a tube-type heat exchanger. A rod or rods are propelled to moves over the inner surface of the tube. The moving rod is in contact with a first process liquid which is adjacent the inner surface as a falling film or b
5768894 Apparatus, process and system for tube and whip rod heat exchanger June 23, 1998
An apparatus, thermal storage system and method for heat exchange using a tube-type heat exchanger. A rod (24) or rods (24, 24') are propelled to move over the inner surface (7) of the tube (1). The moving rod (24) is in contact with a first process liquid which is adjacent the inner sur
5385645 Heat transfer apparatus with positive drive orbital whip rod January 31, 1995
A heat transfer apparatus for processing a liquid continuously has a positive mechanical drive for a set of vertical whip rods each disposed in a vertical heat transfer tube. Each whip rod is free-standing on its lower end and is sufficiently flexible to conform closely to the inner surf
5363660 Orbital type freezing apparatus and method November 15, 1994
A machine for freezing or chilling a liquid continuously to produce a slurry of the liquid and frozen crystals feeds the liquid into a vertically oriented heat transfer tube at its upper end. A refrigerant flow at the outer tube surface evaporates in a vapor/foam stream causing the l
5221439 Orbital tube evaporator with improved heat transfer June 22, 1993
An orbital evaporator has a vertical heat transfer tube or tubes mounted in a container driven in an orbital motion. A stiff whip rod is freely movable within the tube. Its lower end rests on a horizontal plate. The orbital motion causes the rod to roll over the interior surface of the
5013446 Chromatographic gel contactor and process May 7, 1991
A gel contactor receives a fluid media produced in a bio-reactor and containing a product to be extracted, cells and other particles. The gel contactor has a cylindrical container with a cylindrical filter mounted inside the container. A freely rotatable wiper blade sweeps the upstream

 
 
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