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US Patent 5271086 - Quartz glass tube liquid heating apparatus with concentric flow paths
US Patent Issued on December 14, 1993
Estimated Patent Expiration Date:
January 24, 2012Estimated 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.
Estimated Patent Expiration Date:
January 24, 2012Estimated 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.AbstractA liquid heating apparatus 1 has a flow path 2 surrounded by a quartz glass tube 5 inside a tubular ceramic heater 4 which radiates infrared rays and has a PTC characteristic, and a flow path 3 which is formed between two quartz glass tubes 6, 7 which are disposed outside the tubular ceramics tube 4 in a coaxial manner. The liquid heating apparatus can effectively heat purified water used for manufacturing electronics-related products without contamination of the purified water, and provides a compact size while having a high heat capacity. | InventorsAssigneeApplicationNo. 825559 filed on 01/24/1992US Classes:392/483, Heating element producing radiation137/341, With electric heating element165/154, NON-COMMUNICATING COAXIAL ENCLOSURES392/480, Pipe or tube forms flow path392/482Plural pipes or tubes form flow pathField of Search392/483, Heating element producing radiation392/482, Plural pipes or tubes form flow path392/480, Pipe or tube forms flow path422/22, Using direct contact with electrical or electromagnetic radiation422/109, Controls heat transfer422/307, Heat treating vessel with heating means422/308, Including multiple stages137/340, Circulating fluid in heat exchange relationship137/341, With electric heating element165/104.19, Liquid fluent heat exchange material165/104.28, Including means to move heat exchange material165/154, NON-COMMUNICATING COAXIAL ENCLOSURES165/155, With communicating coaxial enclosure165/156Helical conduit meansExaminersPrimary: Reynolds, Bruce A.Assistant: Jeffery, John A. Attorney, Agent or FirmUS Patent References2446367, 4192988, Electrically heated thermal microbial drain barrierIssued on: 03/11/1980 Inventor: Pederson, Jr. , et al.4286140, Apparatus for raising a liquid to a given temperature Issued on: 08/25/1981 Inventor: Dewulf , et al.4371777, Continuous flow electric water heater Issued on: 02/01/1983 Inventor: Roller , et al.4384578, Bio-medical flow sensor Issued on: 05/24/1983 Inventor: Winkler4728776Heated transfer line for capillary tubing Issued on: 03/01/1988 Inventor: Vincent Foreign Patent References
International ClassF24H 009/18Foreign Application Priority Data1991-01-24 JP |
