WO1988010056A2 - Dispositif de chauffage de surfaces situees dans ou sur des vehicules a moteur, telles que surfaces de sieges, vitres, retroviseurs ou similaires - Google Patents

Dispositif de chauffage de surfaces situees dans ou sur des vehicules a moteur, telles que surfaces de sieges, vitres, retroviseurs ou similaires

Info

Publication number
WO1988010056A2
WO1988010056A2 PCT/EP1988/000466 EP8800466W WO8810056A2 WO 1988010056 A2 WO1988010056 A2 WO 1988010056A2 EP 8800466 W EP8800466 W EP 8800466W WO 8810056 A2 WO8810056 A2 WO 8810056A2
Authority
WO
WIPO (PCT)
Prior art keywords
ptc
heating
resistance
parallel
series
Prior art date
Application number
PCT/EP1988/000466
Other languages
German (de)
English (en)
Other versions
WO1988010056A1 (fr
Inventor
Günter LORENZEN
Bodo Ruthenberg
Original Assignee
Wärme- Und Elektrotechnik B. Ruthenberg 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
Priority claimed from DE19873717574 external-priority patent/DE3717574A1/de
Application filed by Wärme- Und Elektrotechnik B. Ruthenberg Gmbh filed Critical Wärme- Und Elektrotechnik B. Ruthenberg Gmbh
Priority to KR1019890700128A priority Critical patent/KR890702407A/ko
Publication of WO1988010056A1 publication Critical patent/WO1988010056A1/fr
Publication of WO1988010056A2 publication Critical patent/WO1988010056A2/fr

Links

Definitions

  • Device for heating surfaces in or on motor vehicles for example of seats, windows, mirrors or the like.
  • the invention relates to a device for heating surfaces in or on motor vehicles, for example, of seats, windows, mirrors or the like, with over the surface in question designed heating conductors.
  • heating conductors may be formed by round or flat, insulated or bare conductor elements, which are formed as wire or as a strand or are also machined, for example by etching, from a flat conductor layer.
  • a heating of larger areas such that a heating phase can be realized with increased heat output and a continuous operation with less heat release prepares with the known, band-shaped heating element according to the mentioned international application difficulties.
  • German Auslegeschrift 30 30 921 to divide a Walker vom in two heating surfaces, one of which is in series with a heat switch and this series circuit is connected in parallel to the other heating surface, wherein the thermal switch with both in a heated outside mirror for motor vehicles Heating surfaces is thermally coupled.
  • the not in series with the heat switch heating surface is used in the known device not primarily for heating the motor vehicle exterior mirror, but for heat application of the heat switch after a Heating phase such that the thermal switch remains switched off after heating the device in continuous operation and not at a relatively high temperature, the heater constantly on and off.
  • the device should be designed so that the not in line with the thermal switch part of the heating element to increase the temperature in continuous operation covers a larger surface area of the surface to be heated, in turn, difficulties arise with respect to the arrangement of the thermal switch, then to to be thermally coupled to both parts of the heating element, to be arranged in an area at which adjoin the two parts of the heating element, such that the thermal switch should be arranged, for example, approximately in the middle of the surface to be heated.
  • the object to be achieved a device for heating surfaces in or on motor vehicles, for example, of seats, windows, mirrors or the like, with over the area designed heat conductors, which form two mutually electrically parallel Schuetzabitese, one of which with a temperature-sensitive control element in series lying parallel to the other Schuleiterabites is applied to the operating voltage, so to design that without the use of thermostatic switches
  • a simple, cost-saving and specializedsunan raschem structure at the start of operation a high heating power and after a certain Einsehaltdauer a lower continuous power is available, the thermal coupling between the heating conductors and the control element can be made at any point of the surface to be heated.
  • control element is a strong positive temperature coefficient of resistance exhibiting resistance element.
  • the device may also contain more than two mutually electrically parallel Schumacherabitese, of which either only one or more or all in each case with a temperature-sensitive control element in the form of a positive temperature coefficient of the resistor having resistive element is connected in series.
  • the at least two Schuleiterabitese are substantially parallel to the operating voltage at the beginning of operation, so that their heat output adds up.
  • increasing operating temperature which transmits to the highly positive temperature coefficient of the resistor having resistive element
  • the current flowing through the heating element with the series resistance element in series flowing current is increasingly lower, so that after a long period of operation, the largest part of the heating power of that Edelleiterabêt is generated, not with the resistance element large positive temperature coefficient of resistance is in series.
  • the heating power therefore has a time course which drops substantially from the total power of the two Schuleiterabête to a little above the individual heating power of a Schuleiterabiteses.
  • 1 is a schematic view of a heated car rear window above a SchutslDivungsschlitzes, wherein the circuit elements are indicated symbolically
  • 2 is a plan view of a heater for a heated outside mirror
  • Fig. 3 is a SChaltsent to explain the electrical circuit of the device of Figure 2 and
  • Fig. 4 is a diagram in which the time course of the heating power of the device according to Figures 2 and 3 is shown.
  • a rear window is designated 1.
  • the disk In the disk are parallel to each other horizontally extending heating 2 to 7 embedded. DieWiderstandsirri this heating conductors are indicated symbolically by the resistors R 2 bi s R. 7
  • the resistors R 2 bi s R. 7 With the Schuleiterabêten 2 to 7 each have large positive temperature coefficient of the resistor having resistive elements PTC 2 to PTC 7 in series.
  • the series circuits of the heating conductors with the resistors R 2 to R 7 on the one hand and the resistive elements PTC 2 to PTC 7 on the other hand are all parallel between ground and a power source 8. Switching means are omitted for simplicity of illustration.
  • a heater ventilation slot which is indicated schematically in Figure 1 at 9. If the device for heating the rear window 1 is put into operation, then the total heating power of the device of Figure 1 corresponds to the sum of the heating power in the Schuleiterabêten 2 to 7, if it is assumed that the resistance elements PTC 2 to PTC 7 in the cold state negligible have little resistance.
  • the heater shown in Figure 2 includes a insertable between the mirror glass and the mirror housing of a motor vehicle exterior mirror support 10, are placed on the two Schuleiterabête 11 and 12 in intermeshing meander.
  • the heating conductor portion 11 is connected in series with a resistor element PTC 13 having a large positive temperature coefficient of resistance, and this series circuit is connected in parallel with the heating conductor portion 12 and connected to a power source 14.
  • the resistance element PTC 13 is thermally coupled to a heat-conducting surface area of the carrier 10 via a thermal conduction plate 15 indicated by dot-dash lines.
  • the Schuleiterabête 11 and 12 may have the same resistance. However, the arrangement may be such that the heating conductor portion 11 has a low resistance than the heating conductor portion 12, so that a particularly high heating power is achieved when switching on the heater, which then drops to a continuous operating value, which is significantly lower than half of initial heating power.
  • FIG. 3 shows a circuit diagram corresponding to the arrangement according to FIG.
  • the course of the total power P of the heater depends on the time by selecting the resistance values of the resistors R 11 and R 12 and the large positive temperature coefficient of the Wi Resistor PTC 13 can be adapted within wide limits to the respective requirements. In each case, different values of the time constant T 1 result . This can also be influenced by the formation of the bossleitbleches 15.
  • thermo coupling of the or each high positive temperature coefficient resistive element to the heating conductor sections may prove particularly useful.

Abstract

Dispositif pour chauffer les surfaces situées dans ou sur des véhicules à moteur, dans lequel des conducteurs chaffants sont disposés sur les surfaces concernés, lesdits conducteurs formant deux parties thermoconductrices disposés électriquement en parallèle, avec un régulateur thermosensible.
PCT/EP1988/000466 1987-05-25 1988-05-25 Dispositif de chauffage de surfaces situees dans ou sur des vehicules a moteur, telles que surfaces de sieges, vitres, retroviseurs ou similaires WO1988010056A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890700128A KR890702407A (ko) 1987-05-25 1988-05-25 시이트, 창문, 바깥거울 등과 같은 자동차 내외장물의 내부 또는 표면의 가열장치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873717574 DE3717574A1 (de) 1987-05-25 1987-05-25 Einrichtung zum beheizen von flaechen in oder an kraftfahrzeugen, beispielsweise von sitzflaechen, fenstern, aussenspiegeln oder dergleichen
DEP3717574.2 1987-05-25

Publications (2)

Publication Number Publication Date
WO1988010056A1 WO1988010056A1 (fr) 1988-12-15
WO1988010056A2 true WO1988010056A2 (fr) 1988-12-15

Family

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