DE1655531A1 - Warm air heater with regulation of the warm air temperature, especially for motor vehicles - Google Patents

Warm air heater with regulation of the warm air temperature, especially for motor vehicles

Info

Publication number
DE1655531A1
DE1655531A1 DE19661655531 DE1655531A DE1655531A1 DE 1655531 A1 DE1655531 A1 DE 1655531A1 DE 19661655531 DE19661655531 DE 19661655531 DE 1655531 A DE1655531 A DE 1655531A DE 1655531 A1 DE1655531 A1 DE 1655531A1
Authority
DE
Germany
Prior art keywords
warm air
motor vehicles
regulation
temperature
air temperature
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.)
Pending
Application number
DE19661655531
Other languages
German (de)
Inventor
Ehrenberg Hans Joachim
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of DE1655531A1 publication Critical patent/DE1655531A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2203—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners
    • B60H1/2206—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners controlling the operation of burners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2228—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant controlling the operation of heaters
    • B60H2001/224—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant controlling the operation of heaters automatic operation, e.g. control circuits or methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2246—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant obtaining information from a variable, e.g. by means of a sensor
    • B60H2001/2256—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant obtaining information from a variable, e.g. by means of a sensor related to the operation of the heater itself, e.g. flame detection or overheating

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Temperature (AREA)

Description

TOIiOSWAGfEHW]SHK AktiengesellschaftTOIiOSWAGfEHW] SHK Aktiengesellschaft

Wolfsburg den 14· 4- 1966 Wolfsburg the 14 · 4- 1966

Unser Zeichen: K 57b
1700-Dr.W/SuOur reference: K 57b
1700-Dr.W / Su

B e s ehre ibungHonor exercise

Warmluft-Heizgerät mit Regelung der Warmluft' temperatur, insbesondere für Kraftfahrzeuge Warm air heater with regulation of the warm air ' temperature, in particular for motor vehicles

Die Erfindung betrifft ein Warmluft-Heizgerät mit Regelung der Warmlufttemperatür, wie es insbesondere zur Heizung von Kraftfahrzeug- Fahrgas träumen benutzt wird. The invention relates to a warm air heater with control of the warm air temperature, as it is used in particular for the heating of motor vehicle driving gas dreams.

Bekannte derartige Geräte weisen einen im Strom der erzeugten Warmluft angeordneten Bi-Metall-Schalter auf, der die Aufheizung der Luft durch elektrische Abschaltung unterbricht, wenn eine vorgegebene Temperatur überschritten wird, und die Heizung nach Abkühlung des Wärmefühlers wieder einschaltet. Diese Art des' Überhitzungsschutzes für die Kraftfahrzeugheizung weist lediglich eine geringe Regelgenauigkeit auf.Known such devices have one in the stream of generated Warm air arranged bimetal switch on which the heating the air is interrupted by electrical shutdown when a specified temperature is exceeded, and the heating after Cooling down of the heat sensor switches on again. This type of 'overheating protection for motor vehicle heating only has low control accuracy.

Nach der Erfindung wird daher vorgeschlagen, als im Heizluftstrom angeordnete Temperaturfühler einen Heißleiter zu verwenden, der in einer Spannungsteilerschaltung einen als Schwellwertschalter dimensionierten Schmitt-Trigger steuert. According to the invention it is therefore proposed as in the heating air flow arranged temperature sensor to use a thermistor, which controls a Schmitt trigger dimensioned as a threshold switch in a voltage divider circuit.

Anhand der beigefügten Schaltbilder sollen zwei Ausführungsbeispiele der Erfindung nachfolgend erläutert -werden. With the aid of the attached circuit diagrams, two exemplary embodiments of the invention will be explained below.

009829/0593009829/0593

16556311655631

Die Schaltungsanordnung nach Fig. 1 wird mit der aus der Fahrzeugbatterie entnommenen Gleichspannung von 12 Volt gespeist. In eine Spannungsteilerschaltung, bestehend aus einem Heißleiter 1, d. h. einem Widerstand mit negativer Temperaturabhängigkeit, einem Festwiderstand 2 und einem einstellbaren Widerstand 3> wird das Basispotential des ersten Transistors eines Schmitt-Triggers bestimmt.- Im Kollektorkreis des zweiten Transistors b liegt ein Drehankerrelais 6 mit parallel geschaltetem Funkenlöschkondensator 7 zur An- und Abschaltung des nicht dargestellten Heizgerätes. Die Schaltungsanordnung ist derart dimensioniert, daß bei einer am Widerstand 3 einstellbaren Temperatur der Schwellwerk erreicht wird, bei dem der Transistor 4 stromführend und der Transistor 5 stromlos wird, d. h. das Relais 6 abschaltet. Mit dem Absinken der Temperatur des Heißleiters 1 erhöht sich dessen elektrischer Widerstand. Damit verringert sich die Basis-Emitter-Spannung des Transistors 4 und dessen Kollektorstrom. Beim Schwellwert kippt dann die Schaltung in ihre zweite stabile Lage, indem der Transistor 5 leitend und damit das Seiais 6 stromführend wird.The circuit arrangement according to FIG. 1 is fed with the DC voltage of 12 volts taken from the vehicle battery. The base potential of the first transistor of a Schmitt trigger is determined in a voltage divider circuit, consisting of a thermistor 1, ie a resistor with negative temperature dependence, a fixed resistor 2 and an adjustable resistor 3>. A rotary armature relay 6 is located in the collector circuit of the second transistor b parallel-connected spark quenching capacitor 7 for switching the heater, not shown, on and off. The circuit arrangement is dimensioned in such a way that at a temperature which can be set at the resistor 3, the swell is reached, at which the transistor 4 is energized and the transistor 5 is de-energized, ie the relay 6 switches off. As the temperature of the thermistor 1 drops, its electrical resistance increases. This reduces the base-emitter voltage of the transistor 4 and its collector current. At the threshold value, the circuit then flips into its second stable position in that the transistor 5 becomes conductive and thus the seiais 6 becomes live.

Mit der angegebenen Schaltungsanordnung wurde eine für den erforderlichen Zwec
Celsius erreicht.With the specified circuit arrangement was a for the required purpose
Celsius reached.

forderlichen Zweck ausreichende Temperatutfkonstanz von - 5 GradFor the necessary purpose, sufficient temperature constancy of - 5 degrees

Falls sich für andere Anwendungsgebiete der Schaltungsanordnung eine höhere Regelgenauigkeit als notwendig erweisen sollte, so wird dem Schmitt-Trigger eine Verstärkerstufe nach Fig. 2 mit einem weiteren Transistor 10 vorgeschaltet, wobei dann der Heißleiter 1a zwischen Basis und Emitter des Eingangstransistors 4a zu schalten ist. In den in der Zeichnung weggelassenen Schaltungselementen stimmt die Schaltung mit derjenigen nach Fig. 1 überein. If a decision will be a higher control precision than necessary for other applications of the circuit arrangement, so the Schmitt trigger is an amplifier stage according to FIG. Preceded by 2 with a further transistor 10, and then, the thermistor is to be switched 1a between the base and emitter of the input transistor 4 a . In the circuit elements omitted in the drawing, the circuit corresponds to that of FIG.

.009829/0593.009829 / 0593

BAD'ORlQlNALBAD'ORlQlNAL

Claims (1)

VOLKSWAGENWEKK Aktiengesellschaft . ■ I D O b O 3 1VOLKSWAGENWEKK Aktiengesellschaft. ■ I D O b O 3 1 Wolfsburg den I4,. 4. I966· Wolfsburg the I4 ,. 4. I966 Unser Zeichen« K 576 °Our sign «K 576 ° 1700-Br.W/Su1700-Br.W / Su Anspruchclaim Verbrennungsgerät für Kraftfahrzeuge mit elektrischer Temperatur regelung mit Hilfe eines Temperaturfühlers im Strom der erzeugte Warmluft, dadurch gekennzeichnet, daß als Temperaturfühler ein Heißleiter (1, 1a) dient, der in einer Spannungsteilerschaltung zur Steuerung eines als Schwellwertschalter wirkenden Schmitt-Triggers dient.Combustion device for motor vehicles with electrical temperature control with the help of a temperature sensor in the electricity generated Warm air, characterized in that an NTC thermistor (1, 1a) is used as the temperature sensor, which is connected to a voltage divider circuit for controlling a Schmitt trigger that acts as a threshold switch serves. 009829/0593009829/0593 Leer seiteBlank page
DE19661655531 1966-04-21 1966-04-21 Warm air heater with regulation of the warm air temperature, especially for motor vehicles Pending DE1655531A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV0030892 1966-04-21

Publications (1)

Publication Number Publication Date
DE1655531A1 true DE1655531A1 (en) 1970-07-16

Family

ID=7586007

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19661655531 Pending DE1655531A1 (en) 1966-04-21 1966-04-21 Warm air heater with regulation of the warm air temperature, especially for motor vehicles

Country Status (1)

Country Link
DE (1) DE1655531A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19523905A1 (en) * 1995-06-30 1997-01-02 Webasto Thermosysteme Gmbh Automobile with auxiliary heater for passenger space

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19523905A1 (en) * 1995-06-30 1997-01-02 Webasto Thermosysteme Gmbh Automobile with auxiliary heater for passenger space

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