WO2007136702A3 - Air heater for a gas chromatograph - Google Patents

Air heater for a gas chromatograph Download PDF

Info

Publication number
WO2007136702A3
WO2007136702A3 PCT/US2007/011833 US2007011833W WO2007136702A3 WO 2007136702 A3 WO2007136702 A3 WO 2007136702A3 US 2007011833 W US2007011833 W US 2007011833W WO 2007136702 A3 WO2007136702 A3 WO 2007136702A3
Authority
WO
WIPO (PCT)
Prior art keywords
air
core
air heater
heater
conduit
Prior art date
Application number
PCT/US2007/011833
Other languages
French (fr)
Other versions
WO2007136702A2 (en
Inventor
Randy L Harvey
Martin L Tanaka
Original Assignee
Abb Inc
Randy L Harvey
Martin L Tanaka
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Abb Inc, Randy L Harvey, Martin L Tanaka filed Critical Abb Inc
Publication of WO2007136702A2 publication Critical patent/WO2007136702A2/en
Publication of WO2007136702A3 publication Critical patent/WO2007136702A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/26—Conditioning of the fluid carrier; Flow patterns
    • G01N30/28—Control of physical parameters of the fluid carrier
    • G01N30/30—Control of physical parameters of the fluid carrier of temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N2030/022—Column chromatography characterised by the kind of separation mechanism
    • G01N2030/025—Gas chromatography
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/26—Conditioning of the fluid carrier; Flow patterns
    • G01N30/28—Control of physical parameters of the fluid carrier
    • G01N30/30—Control of physical parameters of the fluid carrier of temperature
    • G01N2030/3007—Control of physical parameters of the fluid carrier of temperature same temperature for whole column
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/26—Conditioning of the fluid carrier; Flow patterns
    • G01N30/28—Control of physical parameters of the fluid carrier
    • G01N30/30—Control of physical parameters of the fluid carrier of temperature
    • G01N2030/3053—Control of physical parameters of the fluid carrier of temperature using resistive heating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/26—Conditioning of the fluid carrier; Flow patterns
    • G01N30/28—Control of physical parameters of the fluid carrier
    • G01N30/30—Control of physical parameters of the fluid carrier of temperature
    • G01N2030/3076—Control of physical parameters of the fluid carrier of temperature using specially adapted T(t) profile
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/26—Conditioning of the fluid carrier; Flow patterns
    • G01N30/28—Control of physical parameters of the fluid carrier
    • G01N30/30—Control of physical parameters of the fluid carrier of temperature
    • G01N2030/3084—Control of physical parameters of the fluid carrier of temperature ovens

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Resistance Heating (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention is directed to an air heater for a gas chromatograph. The air heater has a core disposed inside a housing and includes an electrically resistive heating element. An air passage in the core extends parallel to a central axis of the air heater. A conduit extends parallel to the central axis of the air heater and is disposed farther outward from the central axis of the air heater than the air passage of the core. The conduit is connected between an air flow inlet and the air passage in the core such that when the air flow inlet is connected to an air source, air from the air inlet flows through the conduit to the air passage in the core and thence through an air flow outlet of the air heater. The air flowing through the conduit is cooler than the air flowing through the air passage in the core.
PCT/US2007/011833 2006-05-19 2007-05-17 Air heater for a gas chromatograph WO2007136702A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US80168606P 2006-05-19 2006-05-19
US60/801,686 2006-05-19

Publications (2)

Publication Number Publication Date
WO2007136702A2 WO2007136702A2 (en) 2007-11-29
WO2007136702A3 true WO2007136702A3 (en) 2008-03-20

Family

ID=38723834

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/011833 WO2007136702A2 (en) 2006-05-19 2007-05-17 Air heater for a gas chromatograph

Country Status (1)

Country Link
WO (1) WO2007136702A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013010858B4 (en) * 2013-06-28 2019-07-18 Webasto SE Electric heater, vehicle with an electric heater and method of making an electric heater
CN105572272A (en) * 2016-01-15 2016-05-11 湖南师范大学 Capillary heating device of novel structure
US11041660B2 (en) * 2018-09-21 2021-06-22 Rosemount Inc. Forced convection heater
US11204340B2 (en) * 2018-09-21 2021-12-21 Rosemount Inc. Forced convection heater

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2396190A (en) * 1943-09-28 1946-03-05 Cities Service Oil Co Purification of submarine atmospheres
US3109912A (en) * 1961-12-21 1963-11-05 Ralph G Cerulli Electric heater for heating compressed air
US3244860A (en) * 1962-04-26 1966-04-05 Parsons C A & Co Ltd Heaters for gases
DE1615278A1 (en) * 1967-06-30 1970-07-23 Gefi Ges F Industriewaerme Mbh Electric resistance furnace, especially for heating gaseous media
US4461950A (en) * 1982-08-17 1984-07-24 The Foxboro Company Heater for air bath oven
US4855570A (en) * 1987-12-09 1989-08-08 Tim Wang Electric fluid heating unit having radial PTC ceramic heating elements
EP1186953A2 (en) * 2000-09-01 2002-03-13 Fuji Photo Film Co., Ltd. Method of and apparatus for packaging light-shielding photosensitive material roll, and apparatus for heating and supplying fluid
US6797925B1 (en) * 1999-08-28 2004-09-28 Gunther Heisskanaltechnik Gmbh Electric heating element for hot runner systems and a method for producing a heating element of this type
US6873790B1 (en) * 2003-10-20 2005-03-29 Richard Cooper Laminar air flow, low temperature air heaters using thick or thin film resistors

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2396190A (en) * 1943-09-28 1946-03-05 Cities Service Oil Co Purification of submarine atmospheres
US3109912A (en) * 1961-12-21 1963-11-05 Ralph G Cerulli Electric heater for heating compressed air
US3244860A (en) * 1962-04-26 1966-04-05 Parsons C A & Co Ltd Heaters for gases
DE1615278A1 (en) * 1967-06-30 1970-07-23 Gefi Ges F Industriewaerme Mbh Electric resistance furnace, especially for heating gaseous media
US4461950A (en) * 1982-08-17 1984-07-24 The Foxboro Company Heater for air bath oven
US4855570A (en) * 1987-12-09 1989-08-08 Tim Wang Electric fluid heating unit having radial PTC ceramic heating elements
US6797925B1 (en) * 1999-08-28 2004-09-28 Gunther Heisskanaltechnik Gmbh Electric heating element for hot runner systems and a method for producing a heating element of this type
EP1186953A2 (en) * 2000-09-01 2002-03-13 Fuji Photo Film Co., Ltd. Method of and apparatus for packaging light-shielding photosensitive material roll, and apparatus for heating and supplying fluid
US6873790B1 (en) * 2003-10-20 2005-03-29 Richard Cooper Laminar air flow, low temperature air heaters using thick or thin film resistors

Also Published As

Publication number Publication date
WO2007136702A2 (en) 2007-11-29

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