EP1258632A1 - Installation de chauffage, en particulier installation de chauffage pour automobiles diesel, ainsi qu'agrégat de chauffage, modules de chauffage, de réglage et de puissance pour celle-ci - Google Patents

Installation de chauffage, en particulier installation de chauffage pour automobiles diesel, ainsi qu'agrégat de chauffage, modules de chauffage, de réglage et de puissance pour celle-ci Download PDF

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Publication number
EP1258632A1
EP1258632A1 EP01440137A EP01440137A EP1258632A1 EP 1258632 A1 EP1258632 A1 EP 1258632A1 EP 01440137 A EP01440137 A EP 01440137A EP 01440137 A EP01440137 A EP 01440137A EP 1258632 A1 EP1258632 A1 EP 1258632A1
Authority
EP
European Patent Office
Prior art keywords
heating
heating elements
power
semiconductor element
controllable semiconductor
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.)
Withdrawn
Application number
EP01440137A
Other languages
German (de)
English (en)
Inventor
Werner Woelfel
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.)
Alcatel CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Priority to EP01440137A priority Critical patent/EP1258632A1/fr
Publication of EP1258632A1 publication Critical patent/EP1258632A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
    • F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
    • F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants

Definitions

  • the invention relates to a heating device, in particular a Cooling water heater for diesel vehicles, according to Preamble of claim 1, a heating unit according to the preamble of claim 2, a control module according to the preamble of Claim 3 and a power module according to the preamble of the claim 4th
  • the cooling water of diesel engines must be (electrically) preheated can be. It is known to have three or four heating elements to use and attach them appropriately.
  • One of the heating elements is linear with a FET (Field Effect Transistor, German: field effect transistor) as a controllable semiconductor element regulated and the rest switched statically.
  • FET Field Effect Transistor, German: field effect transistor
  • the use of FETs is also known for static switching.
  • Power losses occur primarily in that semiconductor element on that regulates performance; may be but also take into account the power required for control this semiconductor device is required.
  • Cooling water heating is the medium to be heated at a temperature level, that for cooling the lossy semiconductor device suitable is.
  • This semiconductor element can thus suitable thermal coupling also used as a heating element become, whereby the power loss becomes useful power.
  • thermal coupling limits the design Liberties strongly. Besides, it is on a higher for a heater Unsuitable temperature level.
  • the invention has for its object a heating device specify that without unnecessary limitation of the constructive Freedom significantly reduces power loss.
  • this object is achieved by a method according to the teaching of claim 1, a heating unit according to the teaching of claim 2, a control module according to the teaching of claim 3 and a power module according to the teaching of claim 4.
  • the invention is based on the use of binary staggered Heating elements, the smallest being duplicated. One the two smallest heating elements are regulated, the other and the larger ones are only switched statically. Because the maximum Power loss that occurs depends on the size of the load to be controlled depends, the power loss is clear with this configuration reduced.
  • the heater in this example from a heating unit 10, a control module 20 and a Power module 30.
  • the heating unit 10 is in thermal contact with an element 40 to be heated, which in turn is in thermal Contact with a transmitter 41 is.
  • the heating unit 10 here consists of five individual heating elements, which are here in thermal contact with each other are drawn. In any case, it is important for heating elements in itself, of course, that they are each in thermal contact stand to the element 40 to be heated. Whether they are among themselves have direct thermal contact is irrelevant in practice, it is probably rather unusual.
  • the heating elements are dimensioned so that they are at the intended operating voltage + UB powers of 1000 W, 500 W, 250 W and twice Output 125 W, a total of 2000 W.
  • the power module 30 here has four switches and a regulator on. These are as semiconductor switches and controllable semiconductor elements executed. At the current state of the art these are preferably field effect transistors (FETs) that both as a semiconductor switch as well as controllable semiconductor elements are suitable.
  • FETs field effect transistors
  • the load on these five semiconductor devices is very different in this example. For practical For reasons, it can make sense to have all five the same dimension and for the maximum power loss interpreted. The maximum power loss that occurs is even with the present invention, that power loss is still which occurs in the controllable semiconductor component, but it is significantly lower than in the prior art, because this controllable semiconductor component is only a relative one has to process low load.
  • a heating unit according to the state of the art with five 2000 W heating elements Should be able to deliver heating power, should have 5 x 400 W, which would then regulate 400 W in contrast to 125 W in the present case Example.
  • the power loss Apart from the power dissipation, which is in the fully switched Semiconductor component occurs, is the power loss not on the type of semiconductor device, but (apart from of course on the load) only dependent on the control. at linear control and use as adjustable series resistor is the power loss at half the load the biggest.
  • the signal is the power loss mainly due to the slope given. To some extent, this can be done by both the control as well as the construction of the heating elements in particular to be influenced.
  • One in the sense of power loss Favorable high slope is with a high degree connected to interference radiation and therefore undesirable again.
  • the considerations presented here basically give way not from those in the prior art and are from well known there; through the clear in the invention less affected useful power is both the power loss as well as the interference radiation significantly lower.
  • the control module 20 is shown here only very symbolically. It initially has all functional units, including those for Regulation of conventional heating units are required. For this belongs above all to a comparator function in order to shown here as Uref, and that of sensor 41 to derive a controlled variable from the actual quantity supplied.
  • This controlled variable can then be converted into a digital size, for example are, whose, in example 4, most significant bits for the control the semiconductor switch and its lowest value Bits after reverse conversion into an analog residual value for control of the controllable semiconductor element can be used.
  • the direct derivation of the analog residual value from the controlled variable is of course also possible.
  • the control of the semiconductor switch through the most significant bits and the control of the controllable semiconductor element by the analog residual value can be done as in the prior art.
  • the power module 30 was already together with the control module 20 described. But it is here as an independent unit shown because it varies depending on the application Technologies, different operating voltages, in the example of the unregulated battery voltage UB des Diesel vehicle, and the different thermal requirements (Cooling) not necessarily structurally with the control module must be united and therefore not necessarily with this must form an economic unit.
  • FIG. 2 shows an example of one of the five heating elements in the example, referred to here as 1i, together with the associated one Section from the power module, here the semiconductor switch or controllable semiconductor element 3i and the associated section from the control module, referred to here as 2i.
  • Both the Semiconductor switch and the controllable semiconductor element are realized here by a field effect transistor. This lies in series with the associated heating element between the operating voltage and mass. A connection of the heating element is located to ground, the other to the source of the field effect transistor, whose drain is in turn connected to the operating voltage. Between the gate and the source of the field effect transistor is that of Control module generated control voltage applied.
  • the operating voltage is a DC voltage, usually 12 or 24 Volt.
  • An AC power source could also be used in other applications come into question.
  • the semiconductor components then required, about triacs, and their control are the expert but also common. This could possibly take place here linear control or pulse width control a leading edge control in question.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Resistance Heating (AREA)
EP01440137A 2001-05-16 2001-05-16 Installation de chauffage, en particulier installation de chauffage pour automobiles diesel, ainsi qu'agrégat de chauffage, modules de chauffage, de réglage et de puissance pour celle-ci Withdrawn EP1258632A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01440137A EP1258632A1 (fr) 2001-05-16 2001-05-16 Installation de chauffage, en particulier installation de chauffage pour automobiles diesel, ainsi qu'agrégat de chauffage, modules de chauffage, de réglage et de puissance pour celle-ci

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01440137A EP1258632A1 (fr) 2001-05-16 2001-05-16 Installation de chauffage, en particulier installation de chauffage pour automobiles diesel, ainsi qu'agrégat de chauffage, modules de chauffage, de réglage et de puissance pour celle-ci

Publications (1)

Publication Number Publication Date
EP1258632A1 true EP1258632A1 (fr) 2002-11-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01440137A Withdrawn EP1258632A1 (fr) 2001-05-16 2001-05-16 Installation de chauffage, en particulier installation de chauffage pour automobiles diesel, ainsi qu'agrégat de chauffage, modules de chauffage, de réglage et de puissance pour celle-ci

Country Status (1)

Country Link
EP (1) EP1258632A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3304322A1 (de) * 1983-02-09 1984-08-09 Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden Elektrischer durchlauferhitzer
US4723068A (en) * 1985-04-17 1988-02-02 Dainippon Screen Mfg. Co., Ltd. Electric power control device in an automatic temperature adjusting apparatus
EP0840192A2 (fr) * 1996-11-01 1998-05-06 TA Instruments, Inc. Système et méthode de contrÔle d'un élément de chauffage pour fluides cryogéniques refrigérant des instruments scientifiques
JPH11170846A (ja) * 1997-12-15 1999-06-29 Zexel:Kk 車両用暖房装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3304322A1 (de) * 1983-02-09 1984-08-09 Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden Elektrischer durchlauferhitzer
US4723068A (en) * 1985-04-17 1988-02-02 Dainippon Screen Mfg. Co., Ltd. Electric power control device in an automatic temperature adjusting apparatus
EP0840192A2 (fr) * 1996-11-01 1998-05-06 TA Instruments, Inc. Système et méthode de contrÔle d'un élément de chauffage pour fluides cryogéniques refrigérant des instruments scientifiques
JPH11170846A (ja) * 1997-12-15 1999-06-29 Zexel:Kk 車両用暖房装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11 30 September 1999 (1999-09-30) *

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