EP1182402A1 - Steuerschaltung - Google Patents
Steuerschaltung Download PDFInfo
- Publication number
- EP1182402A1 EP1182402A1 EP00118473A EP00118473A EP1182402A1 EP 1182402 A1 EP1182402 A1 EP 1182402A1 EP 00118473 A EP00118473 A EP 00118473A EP 00118473 A EP00118473 A EP 00118473A EP 1182402 A1 EP1182402 A1 EP 1182402A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resistor
- circuit
- capacitor
- control circuit
- comparator
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/20—Systems for controlling combustion with a time program acting through electrical means, e.g. using time-delay relays
- F23N5/203—Systems for controlling combustion with a time program acting through electrical means, e.g. using time-delay relays using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
- F23N2005/182—Air flow switch
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/22—Timing network
- F23N2223/26—Timing network with capacitors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/32—Igniting for a predetermined number of cycles
Definitions
- the invention relates to a control circuit according to the preamble of claim 1.
- Control circuits according to the prior art are known from EP-0 698 767 B1 and EP-0 855 755 B1 known.
- the control circuit according to EP-0 855 755 B1 is an advantageous one Further development of the control circuit according to EP-0 698 767 B1.
- the control circuit according to EP-0 855 755 B1 is used in gas burners with fan support Application.
- the control circuit according to EP-0 855 755 B1 is not Modifiable in that it is the same for atmospheric gas burners Gas burners without fan support could be used. So in the EP patent application 00102821.1 proposed a control circuit, both in gas burners with blower support as well as with atmospheric gas burners can.
- the problem underlying the present invention is that of a novel control circuit create that is inexpensive to manufacture.
- a relay RY2 has a changeover contact with NO2 make contact and NC2 normally closed contact, while the C2 contact arm on one Mains voltage line L is.
- the relay RY2 is equipped with an electronic switch, e.g. a transistor Q2, connected in series, the control electrode to the output A one Control electronics CE is connected.
- a circuit with a diode D1 and a Resistor R2 leads from normally open contact NO2 of relay RY2 to its field winding and via the electronic switch Q2 to the other mains voltage line N.
- a DC voltage supply circuit from a resistor R1, a diode D8 and a parallel connection switched from a capacitor C5 and a Zener diode Z4, the parallel connection from capacitor C5 and Zener diode Z4 with diode D8 and resistor R1 in series is switched.
- the series connection of relay RY2 and electronic switch Q2 is on the one hand Capacitor C6 and on the other hand a Zener diode Z6 connected in parallel.
- a charging resistor R5 for the capacitor C6 engages at a connection L2 of the excitation winding of the gas valve MV on.
- a further capacitor C1 is provided, which is between the normally open contact NO2 of the Relay RY2 and the gas valve MV is switched.
- the capacitor C1 intervenes on the other Connection L1 of the field winding of the gas valve MV.
- the capacitor C1 thus leads from the normally open contact NO2 of the relay RY2 to the connection L1 the field winding of the gas valve MV and the connection L2 of the field winding of the Gas valve MV is connected to capacitor C6 via charging resistor R5.
- the input E of the control electronics CE reaches between the relay RY2 and the electronic switch Q2. However, it is also possible that the input E of the Control electronics CE above the relay RY2 - i.e. between relay RY2 and resistor R2 - attacks.
- a circuit from a resistor R4 and one to the resistor R4 is in Series connected diode D2 in parallel to contacts NC2 and NO2 of relay RY2 connected.
- the circuit of resistor R4 and diode D2 leads from the normally closed contact NC2 Relay RY2 via the circuit consisting of diode D1 and resistor R2 for excitation winding of the Relay RY2 and via the electronic switch Q2 to the mains voltage line N.
- a circuit from a resistor R3 and one to the resistor R3 is in series switched diode D3 provided.
- Resistor R3 and diode D3 are between the Normally closed contact NC2 of relay RY2 and connection L2 of the field winding of the gas valve MV switched.
- FIG. 1 there is a blower FA between NO2 and ground potential N. connected. Is between the connection L2 of the gas valve MV and the mains voltage line N. a switch PS with contacts NO and C switched.
- the control electronics CE of the control circuit comprises a mono-stable Timer circuit and a bi-stable hold circuit.
- the timer circuit is formed from: a diode D9, a capacitor C7, resistors R14, R16, R6, R12, R8, R7, R10 and R17, a comparator U1 and an electronic switch Q7.
- the hold circuit is composed of: capacitors C2 and C4, resistors R55, R44 and R47 and one Comparator U2. As can be seen in FIG. 1, the electronic switches form Q2 and Q7 together a Darlington transistor.
- the capacitor C7 of the timer circuit is directly connected to the capacitor via the diode D9 C6 charged.
- the timer circuit is monostable. This will achieved in that the Zener diode Z6 connected in parallel with the capacitor C6 the most Input E of the control electronics CE limited signal present. This ensures that the signal at the plus (+) input of the comparator U1 is at the minus (-) input of the comparator U1 signal normally does not exceed.
- the timer circuit must be activated in a different way.
- the bi-stable hold circuit is provided to activate the timer circuit. If e.g. the output signal of the comparator U2 is high, the voltage of the plus (+) - Input of the comparator U2 through the circuit of resistors R55 and R47 and the Signal + V determined. After switching on - see the so-called "power-up" signal of the figure 2 - the capacitor C4 is discharged and the comparator U2 is automatically converted into one High impedance output mode converted.
- the voltage of the minus (-) input of the Comparator U2 is formed by the circuit of resistors R7, R6 and R12 and the signal + V determined.
- the minus (-) input is labeled ST in FIG.
- the ST signal is smaller than the signal of the plus (+) - Input of the comparator U2.
- the ST signal is larger than the signal of the plus (+) - Input of the comparator U2.
- the output signal of the comparator U2 decreases.
- the in Capacitor C2 stores energy through electronic switch Q7 negative impulse on its emitter. Since the electronic switch Q7 is conductive, resistor R8 will further decrease the value of the ST signal.
- the Comparator U1 is thereby converted into a high impedance output mode which electronic switch Q7 continues to conduct, electronic switch Q2 begins to conduct.
- the Signal present at input E of control electronics CE is reduced, relay RY2 switches on and finally the fan FA and gas valve MV are activated.
- the bi-stable hold circuit can only be reset by the Power supply is interrupted. The entire signal flow is shown in Figure 2.
- the control circuit described above accordingly becomes an electronic holding circuit realized.
- the result is a volatile control circuit that supports gas burners with blowers as well as with atmospheric gas burners, i.e. gas burners without fan support, can be used.
- a start attempt of the possible to control gas burner In the control circuit described in connection with FIG. 1, a start attempt of the possible to control gas burner.
- the control circuit according to the invention can be simple To be expanded in such a way that two start attempts are possible.
- Fig. 3 shows one Section of the relevant components.
- the bi-stable hold circuit only has to be doubled.
- the components of the bi-stable hold circuit for the second Starting attempts are: capacitors C2-1 and C4-1, resistors R55-1, R44-1 and R47-1 and a comparator U2-1.
- the output of the comparator U2-1 is with the resistor R47 connected.
- the resistor R55-1 is parallel to the resistors R55 and R47 switched.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electronic Switches (AREA)
- Amplifiers (AREA)
- Control Of Stepping Motors (AREA)
- Circuit For Audible Band Transducer (AREA)
- Relay Circuits (AREA)
- Selective Calling Equipment (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Control Of Combustion (AREA)
Abstract
Description
- Figur 1
- eine Schaltungsanordnung nach einem ersten Ausführungsbeispiel der Erfindung;
- Figur 2
- ein Diagramm zur Verdeutlichung der Funktionsweise der Schaltungsanordnung gemäß Fig. 1; und
- Figur 3
- eine Teil-Schaltungsanordnung nach einem zweiten Ausführungsbeispiel der Erfindung.
Claims (8)
- Steuerschaltung für ein Gasventil mit:a) einem Relais (RY2) mit Kontakten (NC2, N02),b) einem Kondensator (C6) samt Ladewiderstand (R5),c) einem mit dem Relais (RY2) in Reihe geschalteten elektronischen Schalter (Q2), wobei diese Reihenschaltung (RY2, Q2) dem Kondensator (C6) parallel geschaltet ist,d) einem ersten Stromkreis aus einem Widerstand (R2) und einer zu dem Widerstand (R2) in Reihe geschalteten Diode (D1) für das Relais (RY2),e) einer Steuerelektronik (CE),
dadurch gekennzeichnet, daßf) die Steuerelektronik (CE) einen mono-stabilen Timer-Schaltkreis (D9, C7, R14, R16, R6, R12, R8, R7, R10, R17, U1, Q7) und mindestens einen bi-stabilen Halteschaltkreis (C2, C4, R55, R44, R47, U2; C2-1, C4-1, R55-1, R44-1, R47-1, U2-1) aufweist. - Steuerschaltung nach Anspruch 1, gekennzeichnet durch eine Zenerdiode (Z6), die einerseits parallel zu der Reihenschaltung aus Relais (RY2) und elektronischem Schalter (Q2) und andererseits parallel zum Kondensator (C6) geschaltet ist.
- Steuerschaltung nach Anspruch 2, dadurch gekennzeichnet, daß die Zenerdiode (Z6) das am Eingang (E) der Steuerelektronik (CE) anliegende Signal beschränkt.
- Steuerschaltung nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der oder jeder bi-stabile Halteschaltkreis einen Komparator (U2; U2-1) mit zwei Eingängen und einem Ausgang aufweist, wobei zwischen den Ausgang und einen ersten Eingang, insbesondere einen Plus (+) ― Eingang, des Komparators (U2; U2-1) ein erster Widerstand (R44; R44-1) und parallel zum erstem Widerstand (R44; R44-1) eine Reihenschaltung aus einem Kondensator (C4; C4-1) und einem zweiten Widerstand (R55; R55-1) geschaltet ist.
- Steuerschaltung nach Anspruch 4, dadurch gekennzeichnet, daß an den Ausgang des Komparators (U2; U2-1) ein dritter Widerstand (R47; R47-1) und ein Kondensator (C2; C2-1) geschaltet ist, wobei der Kondensator (C2; C2-1) an den Angang (A) der Steuerelektronik (CE) angreift.
- Steuerschaltung nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß zur Gewährleistung mehrerer Startversuche entsprechend der Anzahl der gewünschten Startversuche bi-stabile Halteschaltkreise vorhanden sind, insbesondere sind zur Gewährleistung von zwei Startversuchen sind zwei bi-stabile Halteschaltkreise (C2, C4, R55, R44, R47, U2; C2-1, C4-1, R55-1, R44-1, R47-1, U2-1) vorhanden.
- Steuerschaltung nach Anspruch 6, dadurch gekennzeichnet, daß die bi-stabilen Halteschaltkreise derart miteinander verschaltet sind, daß der dritte Widerstand (R47) eines ersten bi-stabilen Halteschaltkreises einerseits an den Ausgang des Komparators (U2) des ersten bi-stabilen Halteschaltkreises (C2, C4, R55, R44, R47, U2) und andererseits an den Ausgang des Komparators (U2-1) eines zweiten bi-stabilen Halteschaltkreises (C2-1, C4-1, R55-1, R44-1, R47-1, U2-1) angeschlossen ist.
- Steuerschaltung nach Anspruch 7, dadurch gekennzeichnet, daß der zweite Widerstand (R55-1) des zweiten bi-stabilen Halteschaltkreises (C2-1, C4-1, R55-1, R44-1, R47-1, U2-1) parallel zu den Widerständen (R55, R47) des ersten bi-stabilen Halteschaltkreises (C2, C4, R55, R44, R47, U2) geschaltet ist.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES00118473T ES2209736T3 (es) | 2000-08-25 | 2000-08-25 | Circuito de control. |
| AT00118473T ATE259045T1 (de) | 2000-08-25 | 2000-08-25 | Steuerschaltung |
| DE50005207T DE50005207D1 (de) | 2000-08-25 | 2000-08-25 | Steuerschaltung |
| PT00118473T PT1182402E (pt) | 2000-08-25 | 2000-08-25 | Circuito de comando |
| EP00118473A EP1182402B1 (de) | 2000-08-25 | 2000-08-25 | Steuerschaltung |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00118473A EP1182402B1 (de) | 2000-08-25 | 2000-08-25 | Steuerschaltung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1182402A1 true EP1182402A1 (de) | 2002-02-27 |
| EP1182402B1 EP1182402B1 (de) | 2004-02-04 |
Family
ID=8169655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00118473A Expired - Lifetime EP1182402B1 (de) | 2000-08-25 | 2000-08-25 | Steuerschaltung |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1182402B1 (de) |
| AT (1) | ATE259045T1 (de) |
| DE (1) | DE50005207D1 (de) |
| ES (1) | ES2209736T3 (de) |
| PT (1) | PT1182402E (de) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0440872A2 (de) * | 1990-02-06 | 1991-08-14 | Honeywell B.V. | Zünd- und Sicherheitsschaltung für Gasbrenner |
| EP0698767A1 (de) * | 1994-08-24 | 1996-02-28 | Honeywell B.V. | Gasbrenner-Steuerschaltung mit Überwachung der Verbrennungsluftzufuhr |
| EP0855557A1 (de) * | 1997-01-22 | 1998-07-29 | Honeywell B.V. | Steuerschaltung für Gasventil mit Überwachung der Verbrennungsluftzufuhr |
| EP0855755B1 (de) | 1997-01-23 | 2003-07-23 | Murata Manufacturing Co., Ltd. | Kreuzung für dielektrische Leitungen |
-
2000
- 2000-08-25 ES ES00118473T patent/ES2209736T3/es not_active Expired - Lifetime
- 2000-08-25 EP EP00118473A patent/EP1182402B1/de not_active Expired - Lifetime
- 2000-08-25 PT PT00118473T patent/PT1182402E/pt unknown
- 2000-08-25 AT AT00118473T patent/ATE259045T1/de not_active IP Right Cessation
- 2000-08-25 DE DE50005207T patent/DE50005207D1/de not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0440872A2 (de) * | 1990-02-06 | 1991-08-14 | Honeywell B.V. | Zünd- und Sicherheitsschaltung für Gasbrenner |
| EP0698767A1 (de) * | 1994-08-24 | 1996-02-28 | Honeywell B.V. | Gasbrenner-Steuerschaltung mit Überwachung der Verbrennungsluftzufuhr |
| EP0698767B1 (de) | 1994-08-24 | 1996-10-30 | Honeywell B.V. | Gasbrenner-Steuerschaltung mit Überwachung der Verbrennungsluftzufuhr |
| EP0855557A1 (de) * | 1997-01-22 | 1998-07-29 | Honeywell B.V. | Steuerschaltung für Gasventil mit Überwachung der Verbrennungsluftzufuhr |
| EP0855755B1 (de) | 1997-01-23 | 2003-07-23 | Murata Manufacturing Co., Ltd. | Kreuzung für dielektrische Leitungen |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1182402B1 (de) | 2004-02-04 |
| ES2209736T3 (es) | 2004-07-01 |
| PT1182402E (pt) | 2004-06-30 |
| ATE259045T1 (de) | 2004-02-15 |
| DE50005207D1 (de) | 2004-03-11 |
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