Heat exchanger for pre-heating intake air for rotary dryer
Patent 4279592 Issued on July 21, 1981. Estimated Expiration Date: 
January 2, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 2, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.InventorAssigneeApplicationNo. 06/109156 filed on 01/02/1980US Classes:432/105, Having combustion products generated in or fed to drum432/107, And having externally heated drum surface or indirect heating flue432/219, HEAT GENERATOR HEATS GAS OR LIQUID MATERIAL IN A FLOW STRUCTURE432/223Having means for indirectly exchanging heat between combustion products and materialExaminersPrimary: Camby, John J.Attorney, Agent or FirmInternational ClassesE01C 19/02 (20060101)E01C 19/05 (20060101) F23C 7/06 (20060101) F23L 15/00 (20060101) F23C 7/00 (20060101) F23L 15/04 (20060101) F26B 21/04 (20060101) F26B 23/02 (20060101) F26B 21/02 (20060101) F26B 23/00 (20060101) AbstractA pre-heating chamber of transversely arcuate shape adapted to be mounted above a longitudinal portion of a rotary dryer chamber adjacent the combustion chamber of a drying apparatus for drying aggregate, such as used in the manufacture of asphalt paving composition, in which ambient air is circulated through the pre-heating chamber and then discharged through a duct means to the air intake of the combustion chamber.The pre-heating chamber is preferably divided into a radially outer air intake passage communicating at one end with a radially inner air discharge passage to provide a more effective heat transfer between the pre-heating chamber and the rotary dryer chamber.Field of SearchTUMBLER-TYPE ROTARY - DRUM FURNACEHaving combustion products generated in or fed to drum Including plural, distinct serially connected work chambers And having externally heated drum surface or indirect heating flue HEAT GENERATOR HEATS GAS OR LIQUID MATERIAL IN A FLOW STRUCTURE Having means for indirectly exchanging heat between combustion products and material | |
