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US 6,786,081 B1Granted
Direct and/or opposing flowpath refrigeration
AssigneeKing Refrigeration, Inc.
InventorsMarc J. Hildebrandt, Theodore W. Selby, Richard H. Hall
Life of this patent
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AssigneeKing Refrigeration, Inc.
InventorsMarc J. Hildebrandt, Theodore W. Selby, Richard H. Hall
Estimating the term…
Device for direct refrigeration has heat-conductable solid member with refrigerant passageway coursing through or about; and at least one test sample well in or in proximity to it, at least one solid, heat-generating member affixed or in proximity to it; and/or optional component(s) and/or feature(s). Heat-conductable solid member may have opposing refrigerant flowpaths containing conventional cooling material(s), for example, air, liquid methanol or ethylene glycol, but preferably, refrigerant for direct refrigeration. The member may be, for example, a block of copper and/or other material with a high heat-conductance, with one or more test sample well(s) for insertion of test sample cell(s) for low-temperature rotary viscometric yield stress testing of engine oils, or other testing. Heating may be employed. Dynamic temperature control can be facilitated by temperature sensor and/or controller system, with sensor(s) and/or heating element(s) strategically placed in or on the block. The device may be augmented or conjoined with or to a solid block thermoelectric cooling/heating contrivance which operates by the Peltier effect. Radially endowed correspondent cell pin and rotor bottom cup arrangement can for practical purposes provide nearly friction free action, essentially unencumbered by water/ice interference. Dry gas blanket delivery system and rotor key arrangements are provided as well.
A direct and/or opposing flowpath refrigeration device comprising a heat-conductable solid member, with at least one refrigerant passageway therethrough or thereabout, which is such that it can be cooled by at least one of direct refrigeration and opposing flowpath refrigeration, wherein;
A viscometric and/or rheological test unit comprising a direct and/or opposing flowpath refrigeration device with refrigeration provided by a liquid to gas, direct refrigeration system, which includes a heat-conductable solid member as a test bank that can accommodate a plurality of sample calls, through or about which member is at least one refrigerant pathway for coursing of refrigerant;
A direct and/or opposing flowpath refrigeration device comprising a heat-conductable solid member, with at least one refrigerant passageway therethrough or thereabout, which is such that it can be cooled by at least one of direct refrigeration and opposing flowpath refrigeration, wherein:
A viscometric and/or rheological test unit comprising a direct and/or opposing flowpath refrigeration device with refrigeration provided by a liquid to gas system, which includes a heat-conductable solid member as a test bank that can accommodate at least one sample cell;
A rotor-stator arrangement comprising a sample cell having a radially endowed cell bottom pin, and a rotor having a bottom cup corresponding to the pin.
In a viscometric and/or rheological test unit for testing an oleaginous substance, having a block with at least one test sample well therein, the improvement which comprises an insertable and removable test sample cell sleeve that fits in said well.
A removable test sample sleeve for a rotor-stator arrangement for a viscometric and/or rheological test unit for testing an oleaginous substance, comprising a cylinder having an open top and a closed bottom, and a radially endowed cell bottom pin.
A stop key for a rotor for a viscometric and/or rheological test unit for testing an oleaginous substance, comprising a generally cylindrical shaft having top and bottom ends and a cylindrical axis;
Dependencies are inferred from the claim text.