DE2143940A1 - FIRE DETECTOR FOR FUEL-FUELED HEATING EQUIPMENT - Google Patents
FIRE DETECTOR FOR FUEL-FUELED HEATING EQUIPMENTInfo
- Publication number
- DE2143940A1 DE2143940A1 DE19712143940 DE2143940A DE2143940A1 DE 2143940 A1 DE2143940 A1 DE 2143940A1 DE 19712143940 DE19712143940 DE 19712143940 DE 2143940 A DE2143940 A DE 2143940A DE 2143940 A1 DE2143940 A1 DE 2143940A1
- Authority
- DE
- Germany
- Prior art keywords
- temperature
- fuel
- heating equipment
- fire detector
- relay
- 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
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
- F23N5/102—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electronic means
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Description
Brennwächter für mit Kraftstoff gespeiste Heizeinrichtungen Die Erfindung betrifft einen Brennwächter für eine Glüh-und eine Zündkerze enthaltenden, mit Kraftstoff gespeiste Reizeinrichtungen, wobei insbesondere an Zusatz-Heizeinrichtungen für Kraftfahrzeuge gedacht ist; derartige Brennwachter enthalten, wie durch die Deutsche Patentschrift 1275894, 63 c - 73 belegt, ein temperaturempfindliches Glied und ein diesem nachgeschaltetes Relais. Burning monitor for fuel-fed heating devices. The invention relates to a combustion monitor for a glow plug and a spark plug containing fuel powered stimulus devices, in particular on additional heating devices for Motor vehicles is intended; contain such burning guards, as by the German Patent 1275894, 63 c - 73 occupied, a temperature sensitive member and a this downstream relay.
Derartige Brennwächter haben die Aufgabe, zunächst gleichzeitig die Glüh- und die Zündkerze einzuschalten, dagegen, sobald die Zündkerze die für die Zündung erforderliche Temperatur angenommen hat, die Glünkerze abzuschalten. Es handelt sich also im Prinzip um eine Umschaltung vom gleichzeitigen Gliih- und Zündbetrieb auf den alleinigen Zündbetrieb. Dabei braucht die Heizeinrichtung nicht unbedingt zwei getrennte Kerzen zu enthalten, von denen die eine eine Glülikerze und die andere eine Zündkerze darstellt; vielnehr sind Kerzenkonstruktionen bekannt, bei denen die Zündkerze zusätzlich mit einer Glühwendel versehen ist.Such burn monitors have the task of initially simultaneously the The glow plug and the spark plug switch on, however, as soon as the spark plug is ready for the Ignition has reached the required temperature to switch off the glow plug. It So in principle it is a matter of switching from the simultaneous glow and ignition operation on the sole ignition mode. The heating device is not absolutely necessary to contain two separate candles, one of which is a glow candle and the other represents a spark plug; Rather, candle constructions are known in which the spark plug is also provided with a filament.
Auch in diesem Palle erfolgt durch den Brennwächter die oben definierte Umschaltnng.In this case, too, the burn monitor takes place as defined above Switch.
Aus der genannten Deutschen Patentschrift ist die Verwendung von Thermostaten in Reihenschaltung mit einem Relais zur Bildung derartiger Brennwächter bekannt. Thermotaten sind bekanntlich als mechanische Elemente störanfällig.The use of thermostats is from the aforementioned German patent in series connection with a relay for the formation of such burn guard known. Thermotats are known to be prone to failure as mechanical elements.
Erfindungsgemäß wird ein elektronischer Brennväohter dadurch geschaffen, daß das temperaturempfindliche Glied ein.According to the invention, an electronic Brennväohter is created by that the temperature sensitive member a.
Thermoelement oder ein temperaturempfindlicher elektrischer Widerstand ist. Ein Uhermoelement oder ein Thermowiderstand bietet im Rahmen des Einsatzes in einem Brennwächter den Vorteil, daß nach dem Einschalten der Heizeinrichtung zwar relativ schnell gleichzeitig die Glüh- und die Zündkerze an Spannung gelegt werden, daß aber bei geeigneter räumlicher Anordnung dieses Gliedes nach dem Abschalten der Heizeinrichtung die Zündkerze noch hinreichend lange an Spannung bleibt, damit der bereits in der Brennkammer der Heizeinrichtung befindGiche Kraftstoff verbrannt und die Abgase aus der Brennkammer transportiert werden.Thermocouple or a temperature-sensitive electrical resistor is. A uherocouple or a thermal resistor offers in the context of the mission in a burning monitor the advantage that after switching on the heating device voltage is applied to the glow and spark plugs relatively quickly at the same time be, that but with a suitable spatial arrangement of this member after switching off of the heater, the spark plug remains energized for a sufficiently long time so that the fuel already in the combustion chamber of the heater is burned and the exhaust gases are transported out of the combustion chamber.
Um ein sicheres Schalten des Relais zu gewährleisten, wird man dieses dem Thermoelement über einen Cperationsverstärker nachschalten.In order to ensure safe switching of the relay, you will need this downstream of the thermocouple via a operation amplifier.
Die Schaltung des erfindungsgemäßen Brennwächters wird im folgenden anhand des figürlich dargestellten Ausführungsbeispiels nochmals erläutert.The circuit of the burn monitor according to the invention is described below explained again using the exemplary embodiment shown in the figures.
Einen wesentlichen Bestandteil des erfindungsgemäßen Brennwächters bildet das Thermoelement 1, das einen an sich bekannten Aufbau hat und zwischen die allgemein mit 2 bezeichnete geregelte Spannungsquelle einerseits und den Operationsverstärker 3 andererseits geschaltet ist.An essential part of the burn monitor according to the invention forms the thermocouple 1, which has a structure known per se, and between the regulated voltage source generally designated 2 on the one hand and the Operational amplifier 3 is switched on the other hand.
Der Operationsverstärker 3 arbeitet auf das Relais. 4, das in en sich bekannter und daher hier nicht dargestellter Weise mit seinen Kontakten im Stromkreis der Glüh- und Zündkerze der ebenfalls nicht dargestellten Heizeinrichtung liegt. Bei Erwärmung des Thermoelements infolge Aufheizens der Heizeinrichtung verändert die in dem Thcrmoelement erzeugte Thermospannung die Gegentaktspannung am Operationsverstärker 3. rer hierdurch am Ausgang des Operationsserstärkers auftretende Spannungssprung von Batteriespannung auf 0 Volt bringt das Relais 4 zum Ansprechen, das mit seinen Kontakten die gewünschte Umschaltung vom Zustand Glühen und Zünden in den Zustand Zünden vornimmt.The operational amplifier 3 works on the relay. 4, that in itself known and therefore not shown here with its contacts in the circuit the glow and spark plug of the heating device, also not shown, is located. Changes when the thermocouple is heated as a result of the heating device heating up the thermal voltage generated in the Thcrmoelement the push-pull voltage at the operational amplifier 3. The resulting voltage jump at the output of the operational amplifier from battery voltage to 0 volts causes relay 4 to respond, with its Contacts the desired changeover from the glow and ignition state to the state Ignition.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712143940 DE2143940A1 (en) | 1971-09-02 | 1971-09-02 | FIRE DETECTOR FOR FUEL-FUELED HEATING EQUIPMENT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712143940 DE2143940A1 (en) | 1971-09-02 | 1971-09-02 | FIRE DETECTOR FOR FUEL-FUELED HEATING EQUIPMENT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2143940A1 true DE2143940A1 (en) | 1973-03-08 |
Family
ID=5818453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19712143940 Pending DE2143940A1 (en) | 1971-09-02 | 1971-09-02 | FIRE DETECTOR FOR FUEL-FUELED HEATING EQUIPMENT |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2143940A1 (en) |
-
1971
- 1971-09-02 DE DE19712143940 patent/DE2143940A1/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OB | Request for examination as to novelty | ||
| OC | Search report available | ||
| OHA | Expiration of time for request for examination |