CA2310583A1 - Heater control - Google Patents

Heater control Download PDF

Info

Publication number
CA2310583A1
CA2310583A1 CA002310583A CA2310583A CA2310583A1 CA 2310583 A1 CA2310583 A1 CA 2310583A1 CA 002310583 A CA002310583 A CA 002310583A CA 2310583 A CA2310583 A CA 2310583A CA 2310583 A1 CA2310583 A1 CA 2310583A1
Authority
CA
Canada
Prior art keywords
generating
alternating current
heater elements
fraction
transmission system
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002310583A
Other languages
French (fr)
Other versions
CA2310583C (en
Inventor
Frederick Gordon Carl, Jr.
William Mountjoy Savage
Robert Rex Burnett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell USA Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2310583A1 publication Critical patent/CA2310583A1/en
Application granted granted Critical
Publication of CA2310583C publication Critical patent/CA2310583C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/023—Industrial applications
    • H05B1/0247—For chemical processes
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
    • G05D23/1913—Control of temperature characterised by the use of electric means using an analogue comparing device delivering a series of pulses
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
    • G05D23/1931—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of one space
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
    • G05D23/1932—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces
    • G05D23/1934—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces each space being provided with one sensor acting on one or more control means

Abstract

A method and apparatus are provided for controlling parallel heater elements (101, 102), the method including the steps of: providing a plurality of electrical heater elements; generating a plurality of temperature signals associated with a plurality of the heater elements;
generating a control signal based on one or more temperature signals;
providing an alternating current power supply (103) connected to the electrical heater element through a power transmission system (111);
generating a signal when the voltage of the alternating current power supply passes through ground potential; blocking electrical power to a heater element starting when a zero detection signal is detected and ending when another zero detection signal is detected, for a fraction of the alternating current cycles in a time period, the fraction being a function of the control signal; and transmitting temperature control signals through the power transmission system.
CA 2310583 1997-11-07 1998-11-04 Heater control Expired - Fee Related CA2310583C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US6475897P 1997-11-07 1997-11-07
US60/064,758 1997-11-07
PCT/US1998/023548 WO1999024886A1 (en) 1997-11-07 1998-11-04 Heater control

Publications (2)

Publication Number Publication Date
CA2310583A1 true CA2310583A1 (en) 1999-05-20
CA2310583C CA2310583C (en) 2004-12-28

Family

ID=22058091

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2310583 Expired - Fee Related CA2310583C (en) 1997-11-07 1998-11-04 Heater control

Country Status (7)

Country Link
US (1) US6023052A (en)
EP (1) EP1027637B1 (en)
AU (1) AU1308699A (en)
CA (1) CA2310583C (en)
DE (1) DE69807918T2 (en)
ES (1) ES2184336T3 (en)
WO (1) WO1999024886A1 (en)

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US6529589B1 (en) * 1999-05-20 2003-03-04 3Com Corporation Method and system for monitoring and controlling automation equipment by modem
US6894254B2 (en) * 2000-04-20 2005-05-17 Mks Instruments, Inc. Heater control system with combination modular and daisy chained connectivity and optimum allocation of functions between base unit and local controller modules
CN1188989C (en) * 2000-09-29 2005-02-09 株式会社山武 Display and control unit, variety mangement apparatus, relay communication apparatus, communication device, and simultaneous communication system
CN100373732C (en) * 2000-12-12 2008-03-05 株式会社山武 State controller
US20060229740A1 (en) * 2005-04-11 2006-10-12 Watlow Electric Manufacturing Company Portable user interface assembly and method
US8044329B2 (en) * 2005-04-11 2011-10-25 Watlow Electric Manufacturing Company Compact limiter and controller assembly and method
US20060249507A1 (en) * 2005-04-11 2006-11-09 Watlow Electric Manufacturing Company Modular controller user interface and method
US20060230297A1 (en) * 2005-04-11 2006-10-12 Watlow Electric Manufacturing Company Electronic device mounting assembly and method
US7652888B2 (en) * 2005-04-11 2010-01-26 Watlow Electric Manufacturing Company Controller housing with connector retention assembly and method
US8010811B2 (en) * 2006-02-02 2011-08-30 Watlow Electric Manufacturing Company Power controller coupling assemblies and methods
US8637794B2 (en) 2009-10-21 2014-01-28 Lam Research Corporation Heating plate with planar heating zones for semiconductor processing
US8791392B2 (en) * 2010-10-22 2014-07-29 Lam Research Corporation Methods of fault detection for multiplexed heater array
KR101914731B1 (en) * 2011-08-30 2018-11-02 와틀로 일렉트릭 매뉴팩츄어링 컴파니 Method of manufacturing a high definition heater system
US20130087549A1 (en) * 2011-10-07 2013-04-11 Yu-Chin Wang Aquarium heater
JP6219227B2 (en) * 2014-05-12 2017-10-25 東京エレクトロン株式会社 Heater feeding mechanism and stage temperature control method
US10443312B2 (en) * 2015-12-28 2019-10-15 Michael J Davis System and method for heating the ground

Family Cites Families (24)

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US4090062A (en) * 1976-07-12 1978-05-16 Phillips Control Corp. Energy demand controller and method therefor
DE2749766A1 (en) * 1977-11-07 1979-05-10 Braun Ag IRON WITH ONE CONTROL CIRCUIT FOR THE SIMULTANEOUS OPERATION OF AT LEAST TWO CONTROL CIRCUITS
GB1600056A (en) * 1978-03-14 1981-10-14 Texas Instruments Ltd Communication via an electricity supply main
EP0095479B1 (en) * 1981-12-03 1985-06-05 Joh. Vaillant GmbH u. Co. Electric water heater
US4777350A (en) * 1984-10-09 1988-10-11 Ranco Electronics Division Heater with duty cycle controller
US4816647A (en) * 1987-11-13 1989-03-28 General Electric Company Power control for appliance having a glass ceramic cooking surface
US4874926A (en) * 1988-08-17 1989-10-17 Sanders Steven B Electric heating load management control
US5060287A (en) * 1990-12-04 1991-10-22 Shell Oil Company Heater utilizing copper-nickel alloy core
US5065818A (en) * 1991-01-07 1991-11-19 Shell Oil Company Subterranean heaters
US5164660A (en) * 1991-08-12 1992-11-17 Shell Oil Company True, power, RMS current, and RMS voltage measuring devices
US5189283A (en) * 1991-08-28 1993-02-23 Shell Oil Company Current to power crossover heater control
DE4130337C2 (en) * 1991-09-12 2002-05-02 Ego Elektro Blanc & Fischer Method for operating an electric heating unit and electric heating unit
US5361982A (en) * 1993-07-12 1994-11-08 Johnson Service Company Temperature control system having central control for thermostats
US5454259A (en) * 1993-08-02 1995-10-03 Toyota Jidosha Kabushiki Kaisha Failure detecting apparatus in temperature controller of air-fuel ratio sensor
US5404952A (en) * 1993-12-20 1995-04-11 Shell Oil Company Heat injection process and apparatus
US5659779A (en) * 1994-04-25 1997-08-19 The United States Of America As Represented By The Secretary Of The Navy System for assigning computer resources to control multiple computer directed devices
JPH07336460A (en) * 1994-06-03 1995-12-22 Hitachi Ltd Data communication equipment
JP3568236B2 (en) * 1994-06-08 2004-09-22 ファナック株式会社 Injection molding machine heater control device
US5648982A (en) * 1994-09-09 1997-07-15 Omnipoint Corporation Spread spectrum transmitter
US5659574A (en) * 1994-09-09 1997-08-19 Omnipoint Corporation Multi-bit correlation of continuous phase modulated signals
FR2728062A1 (en) * 1994-12-09 1996-06-14 Sgs Thomson Microelectronics HEATING SYSTEM COMPRISING A CONTROL UNIT AND RADIATORS PROVIDED WITH PRESENCE DETECTION MEANS
US5654979A (en) * 1995-01-13 1997-08-05 Qualcomm Incorporated Cell site demodulation architecture for a spread spectrum multiple access communication systems
US5579821A (en) * 1995-02-27 1996-12-03 Vander Jagt; Adrian D. Thermally efficient portable melting furnace
GB2298936B (en) * 1995-03-17 1999-05-19 Kwei Tang Chang Control circuit for controlling the operation of a multi-purpose electronic cooker

Also Published As

Publication number Publication date
DE69807918D1 (en) 2002-10-17
EP1027637A1 (en) 2000-08-16
WO1999024886A1 (en) 1999-05-20
CA2310583C (en) 2004-12-28
US6023052A (en) 2000-02-08
EP1027637B1 (en) 2002-09-11
ES2184336T3 (en) 2003-04-01
DE69807918T2 (en) 2003-05-22
AU1308699A (en) 1999-05-31

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20181105