EP1296102B1 - Verfahren zum Betreiben einer aus mehreren Heizelementen bestehenden mehrstufigen elektrischen Heizung - Google Patents

Verfahren zum Betreiben einer aus mehreren Heizelementen bestehenden mehrstufigen elektrischen Heizung Download PDF

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Publication number
EP1296102B1
EP1296102B1 EP02019196A EP02019196A EP1296102B1 EP 1296102 B1 EP1296102 B1 EP 1296102B1 EP 02019196 A EP02019196 A EP 02019196A EP 02019196 A EP02019196 A EP 02019196A EP 1296102 B1 EP1296102 B1 EP 1296102B1
Authority
EP
European Patent Office
Prior art keywords
heating elements
heating
power
power consumption
operating
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.)
Expired - Lifetime
Application number
EP02019196A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1296102A3 (de
EP1296102A2 (de
Inventor
Günther Uhl
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.)
BorgWarner Ludwigsburg GmbH
Original Assignee
BorgWarner Beru Systems GmbH
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
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Application filed by BorgWarner Beru Systems GmbH filed Critical BorgWarner Beru Systems GmbH
Publication of EP1296102A2 publication Critical patent/EP1296102A2/de
Publication of EP1296102A3 publication Critical patent/EP1296102A3/de
Application granted granted Critical
Publication of EP1296102B1 publication Critical patent/EP1296102B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
    • F24H9/2071—Arrangement or mounting of control or safety devices for air heaters using electrical energy supply
    • 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
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/144—Measuring or calculating energy consumption
    • F24H15/148—Assessing the current energy consumption

Definitions

  • the invention relates to a method for operating a multi-stage electric heater consisting of a plurality of heating elements, wherein the power converted in each heating element is maintained at a preset value by controlling the electrical power consumption.
  • a method for controlling an electric heater consisting of at least two heating resistors and a control unit.
  • a setpoint temperature in a cell to be heated is compared with an actual temperature, at regulators of the heating resistors are given by means of a control circuit pulse-shaped time-shifted currents, and the duration of the pulses is adjusted depending on the difference of the temperatures.
  • a multi-stage electric heater for example a heater with positive resistance temperature coefficient PTC, consists of several individual elements, which are often referred to as heating elements and are electrically connected in parallel. Each heating element in turn may consist of several sub-elements, that is, individual PTC bricks.
  • Each individual heating element can be switched on or off via an example electronically formed switch.
  • the electrical resistance R H of the heating elements is subject to production due to large variations. As a result, the power dissipated by the heating elements differs to the same extent.
  • complex measures such as matching or sorting, required to comply with the required for the operating point electrical resistance R H of the individual heating elements.
  • a heater composed of a plurality of heating elements can satisfy the requirement for a defined total power
  • the heating power of the individual heating elements may be different. This leads due to the usually delivered over a larger area heat output to a temperature stratification of the exiting the heating air flow.
  • the heated air has noticeable temperature differences across the exit surface. This is undesirable, for example, in heating or air conditioning systems, since it leads to irregularities in the temperature of the heated room, for example, a vehicle interior. It follows that all individual heating elements of a heater should implement or deliver the same power.
  • the object underlying the invention is to provide a method of the type mentioned above, is ensured by the fact that even if the individual heating elements have scattering resistance values, all the heating elements implement the same power or deliver.
  • each heating element is kept at a preset value P HSoll by controlling the electrical power consumption.
  • P Hsetpoint / n This default value can be variable, so that the power output of the heater is adjustable.
  • the voltage at the heating element for example, by clocking the operating voltage, in particular by pulse width modulation and thereby the power consumption of Heating element to the required value P H reduced.
  • the power consumption of the heating element is determined by measuring the applied voltage and the absorbed current.
  • the inventive method has the advantage that despite the variations in the resistance of the heating elements required at the operating point rated power can be met, the exiting air flow everywhere has the same temperature, that is, no temperature stratification occur, and significantly reduces the sorting cost of the heating elements in terms of their electrical resistance becomes what greatly reduces or even avoids the committee. Depending on the scattering range, sorting can even be completely eliminated. Separated individual heating elements can also be used in heaters with other rated power.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Resistance Heating (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Central Heating Systems (AREA)
EP02019196A 2001-09-25 2002-09-02 Verfahren zum Betreiben einer aus mehreren Heizelementen bestehenden mehrstufigen elektrischen Heizung Expired - Lifetime EP1296102B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10147074A DE10147074A1 (de) 2001-09-25 2001-09-25 Verfahren zum Betreiben einer aus mehreren Heizelementen bestehenden mehrstufigen elektrischen Heizung
DE10147074 2001-09-25

Publications (3)

Publication Number Publication Date
EP1296102A2 EP1296102A2 (de) 2003-03-26
EP1296102A3 EP1296102A3 (de) 2004-01-02
EP1296102B1 true EP1296102B1 (de) 2012-06-20

Family

ID=34352713

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02019196A Expired - Lifetime EP1296102B1 (de) 2001-09-25 2002-09-02 Verfahren zum Betreiben einer aus mehreren Heizelementen bestehenden mehrstufigen elektrischen Heizung

Country Status (6)

Country Link
US (1) US6872922B2 (ja)
EP (1) EP1296102B1 (ja)
JP (1) JP4181370B2 (ja)
KR (1) KR100899611B1 (ja)
CA (1) CA2403820C (ja)
DE (1) DE10147074A1 (ja)

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EP1651911A4 (en) * 2003-07-28 2010-09-01 Phillips & Temro Ind Inc CONTROL FOR INTAKE AIR HEATING DEVICE
EP1900253B1 (en) 2005-06-29 2013-07-31 Watlow Electric Manufacturing Company Smart layered heater surfaces
US8981264B2 (en) 2006-02-17 2015-03-17 Phillips & Temro Industries Inc. Solid state switch
US8003922B2 (en) * 2006-02-17 2011-08-23 Phillips & Temro Industries Inc. Solid state switch with over-temperature and over-current protection
US10077745B2 (en) 2016-05-26 2018-09-18 Phillips & Temro Industries Inc. Intake air heating system for a vehicle
US10221817B2 (en) 2016-05-26 2019-03-05 Phillips & Temro Industries Inc. Intake air heating system for a vehicle
DE102017111772A1 (de) 2016-06-01 2017-12-07 Ngk Spark Plug Co., Ltd. Glühkerzenenergieversorgungssteuervorrichtung und Verfahren zum Ansteuern der Anlegespannung von Glühkerzen
CN114675625A (zh) * 2022-03-21 2022-06-28 潍柴动力股份有限公司 一种控制器控制方法及装置

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Also Published As

Publication number Publication date
KR100899611B1 (ko) 2009-05-27
EP1296102A3 (de) 2004-01-02
KR20030026883A (ko) 2003-04-03
JP2003157954A (ja) 2003-05-30
JP4181370B2 (ja) 2008-11-12
CA2403820A1 (en) 2003-03-25
CA2403820C (en) 2010-06-22
DE10147074A1 (de) 2003-05-08
US6872922B2 (en) 2005-03-29
US20040056018A1 (en) 2004-03-25
EP1296102A2 (de) 2003-03-26

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