Heater for large flows at low pressure losses
Patent 3955552 Issued on May 11, 1976. Estimated Expiration Date: 
May 11, 1993. 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.
May 11, 1993. 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.Patent ReferencesInventorAssigneeApplicationNo. 552131 filed on 02/24/1975US Classes:126/110R, Compressed air126/110AA, Downflow of air being heated126/99C, Helical passages165/83Flexible fluid confining wallExaminersPrimary: Camby, John J.Assistant: Yuen, Henry C. Attorney, Agent or FirmAbstractThis disclosure teaches a heater which is especially well suited to handle large flows of a process stream at low pressure losses. A cylindrical sleeve is mounted by means of a bellows inwardly of a cylindrical shell to separate an inner hot gas flow space from an annular outer process flow space. The sleeve encloses an entrance combustion zone and has an exit end. A baffle is mounted inwardly of the sleeve with a closed end projecting into the exit end of the sleeve to channel the hot gas into an annular convection space bordered outwardly by the sleeve. Extended surface projects from the sleeve into the process flow space and additional extended surface projects from the sleeve into the convection space. | |
