DE102004025971A1 - Control circuit for electric fan in road vehicle has switch with contacts for several resistors in series with fan motor and thermo-relay in parallel with one resistor - Google Patents
Control circuit for electric fan in road vehicle has switch with contacts for several resistors in series with fan motor and thermo-relay in parallel with one resistor Download PDFInfo
- Publication number
- DE102004025971A1 DE102004025971A1 DE102004025971A DE102004025971A DE102004025971A1 DE 102004025971 A1 DE102004025971 A1 DE 102004025971A1 DE 102004025971 A DE102004025971 A DE 102004025971A DE 102004025971 A DE102004025971 A DE 102004025971A DE 102004025971 A1 DE102004025971 A1 DE 102004025971A1
- Authority
- DE
- Germany
- Prior art keywords
- electrical circuit
- circuit according
- series
- thermal relay
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/047—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
Description
Die Erfindung betrifft einen elektrischen Schaltkreis, insbesondere einen Gebläse-Schaltkreis für ein Kraftfahrzeug-Gebläse, gemäß dem Oberbegriff des Anspruchs 1.The The invention relates to an electrical circuit, in particular a blower circuit for a motor vehicle fan, according to the preamble of claim 1.
Herkömmliche Schaltkreise für ein Kraftfahrzeug-Gebläse, wie sie beispielsweise in einer Kraftfahrzeug-Heiz-/Klimaanlage oder zur Motorkühlung verwendet werden, weisen eine Reihe von Gebläse-Vorwiderständen zur Drehzahlregelung des Gebläses, einen Gebläse-Motor und ein thermisches Sicherungselement zur Unterbrechung des Schaltkreises im Falle einer Beschädigung eines Vorwiderstands oder eines sonstigen Fehlerfalles auf. So kann sicher gestellt werden, dass der Motor nicht überlastet wird.conventional Circuits for a motor vehicle blower, as for example in a motor vehicle heating / air conditioning or used for engine cooling be, assign a number of blower Vorwiderständen to Speed control of the blower, a blower motor and a thermal fuse element for interrupting the circuit in case of damage a Vorwiderstands or another error case on. So can ensure that the engine is not overloaded.
Zur thermischen Absicherung werden verschiedene irreversible Temperatursicherungen, wie Mikro-Temperatur-Sicherungen (MTS) oder Lötsicherungen verwendet. Diese sind zwar relativ kostengünstig, jedoch müssen sie nach dem Auftreten eines Fehlerfalls ausgetauscht werden.to thermal protection, various irreversible thermal fuses, such as micro-temperature fuses (MTS) or solder fuses used. These while relatively inexpensive, however, must they are exchanged after the occurrence of a fault.
Ferner sind reversible Temperatursicherungen bekannt, wie z.B. PTC-Elemente, jedoch sind diese relativ teuer. Ferner ist die Lebensdauer beispielsweise von reversiblen, stromabhängig arbeitenden Bimetall-Schaltern begrenzt.Further Reversible temperature fuses are known, such as e.g. PTC elements, however, these are relatively expensive. Further, the life is, for example of reversible, current-dependent limited working bimetallic switches.
Es ist Aufgabe der Erfindung, einen verbesserten elektrischen Schaltkreis zur Verfügung zu stellen.It It is an object of the invention to provide an improved electrical circuit to disposal to deliver.
Diese Aufgabe wird gelöst durch einen Schaltkreis mit den Merkmalen des Anspruchs 1. Vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche.These Task is solved by a circuit having the features of claim 1. Advantageous Embodiments are the subject of the dependent claims.
Erfindungsgemäß ist ein elektrischer Schaltkreis für einen elektrischen Gebläse-Motor eines Kraftfahrzeug-Gebläses mit mindestens einem Vorwiderstand, vorgesehen, wobei der Schaltkreis auch ein Thermo-Relais aufweist, welches der thermischen Absicherung des oder der Vorwiderstände dient. Ein derartiges Thermo-Relais ist relativ kostengünstig und hat eine längere Lebensdauer als herkömmliche reversible Bimetall-Schalter. Ist das Thermo-Element, das insbesondere durch eine Bimetall-Scheibe gebildet wird, unter einer Metallabdeckung angeordnet, so kann diese neben dem Schutz des Thermo-Elements auch der Wärmeübertragung dienen.According to the invention is a electrical circuit for an electric blower motor a motor vehicle fan provided with at least one series resistor, wherein the circuit also has a thermal relay, which the thermal protection of the or the series resistors is used. Such a thermal relay is relatively inexpensive and has a longer life as conventional reversible bimetal switch. Is the thermo-element, in particular through a bimetal disc is formed, arranged under a metal cover, so this can In addition to the protection of the thermo element and the heat transfer serve.
Bevorzugt sind mehrere Vorwiderstände vorgesehen, die in Reihe geschaltet sind, wobei ein mehrstufiger Schalter vorgesehen ist.Prefers are several series resistors provided, which are connected in series, being a multi-stage Switch is provided.
Vorzugsweise ist eine ungesicherte Schaltung vorgesehen, welche einem direkten Stromfluss durch den Gebläse-Motor darstellt. Da in dieser Stellung keine thermische Absicherung von Vorwiderständen erforderlich ist, entfällt diese und das Thermo-Relais hat bevorzugt keinen Einfluss auf diese höchste Schaltstufe des Gebläse-Motors.Preferably an unsecured circuit is provided, which is a direct Current flow through the blower motor represents. Since in this position no thermal protection of series resistors is required, not applicable this and the thermal relay preferably has no influence on this highest switching stage the blower motor.
Zur Absicherung sämtlicher Vorwiderstände ist bevorzugt eine zusätzliche Sicherung, insbesondere eine preiswerte, irreversible Sicherung, im Schaltkreis vorgesehen.to Hedging all Series resistors is preferably an additional one Fuse, in particular an inexpensive, irreversible fuse, provided in the circuit.
Gemäß einer ersten Ausführungsform ist das Thermo-Relais parallel zu einem oder mehreren Vorwiderständen angeordnet. In diesem Fall weist das Thermo-Relais bevorzugt eine Schließerfunktion auf, d.h. es schließt im Betätigungsfall den Stromkreis über eine alternative Leitung, so dass der Gebläse-Motor in einer höheren Gebläsestufe betrieben wird.According to one first embodiment the thermal relay is arranged parallel to one or more series resistors. In this case, the thermal relay preferably has a normally open function on, i. it closes in the case of operation the circuit over an alternative line, allowing the blower motor in a higher blower level is operated.
Gemäß einer zweiten Ausführungsform ist das Thermo-Relais in Reihe mit den Vorwiderständen geschaltet. In diesem Fall weist das Thermo-Relais bevorzugt eine Öffnerfunktion auf, d.h. es unterbricht im Betätigungsfall den Stromkreis.According to one second embodiment the thermo-relay is connected in series with the series resistors. In this case, the thermal relay preferably has an opening function on, i. it interrupts when actuated the circuit.
Das Thermo-Relais arbeitet bevorzugt stromunabhängig, d.h. es strömt kein Strom durch das Bimetall, so dass die Lebensdauer erhöht ist.The Thermo-relay operates preferably current-independent, i. there is no flow Current through the bimetal, so that the life is increased.
Das Thermo-Relais weist vorzugsweise eine Bimetall-Scheibe auf, die bevorzugt unter einer metallischen Abdeckung angeordnet ist, welche die Wärmeübertragungsfunktion von dem zu überwachenden Element (Vorwiderstand) zu dem überwachenden Element (Bimetall) übernimmt.The Thermo-relay preferably has a bimetal disc, the is preferably arranged under a metallic cover, which the heat transfer function from the monitored Element (series resistor) to the supervising Element (bimetal) takes over.
Zum Öffnen oder Schließen des elektrischen Kontakts weist das Thermo-Relais bevorzugt einen elektrisch nicht leitenden Stößel, insbesondere einen Keramik-Stößel auf. Dieser stellt sicher, dass kein Strom durch das Thermo-Relais strömt.To open or Shut down of the electrical contact, the thermal relay preferably has an electrical non-conductive plunger, in particular a ceramic pestle on. This ensures that no current flows through the thermal relay.
Im Folgenden wird die Erfindung anhand zweier Ausführungsbeispiele unter Bezugnahme auf die Zeichnung im Einzelnen erläutert. In der Zeichnung zeigen:in the Below, the invention with reference to two embodiments with reference explained in detail on the drawing. In the drawing show:
Ein
in
Sinkt
die Temperatur wieder in den sicheren Bereich, so öffnet sich
nach einer kurzen Abkühlphase
der Kontakt des Thermo-Relais
Das
Thermo-Relais
Das Thermo-Relais kann gemäß einer nicht in der Zeichnung dargestellten Variante auch die Vorwiderstände R2 und R3 überbrücken, so dass der Gebläse-Motor im Störfall, d.h. eines Überhitzen eines oder beider Vorwiderstände R2, R3 in der dritten Stufe läuft.The Thermo-relay can according to a not shown in the drawing variant, the series resistors R2 and Bridge R3, so that the blower engine in case of accident, i.e. overheating one or both series resistors R2, R3 is running in the third stage.
Gemäß dem ersten
Ausführungsbeispiel
sowie der Variante hierzu hat das Thermo-Relais eine Schließerfunktion, d.h. es schließt im Bedarfsfall
den Stromkreis. Beim zweiten, in
Der
elektrische Schaltkreis
In
einem Störfall
wird der Stromkreis
- 11
- elektrischer Schaltkreiselectrical circuit
- 22
- Gebläse-MotorBlower motor
- 33
- Thermo-RelaisThermal relay
- 44
- Sicherungfuse
- 55
- Schalterswitch
- R1, R2, R3R1, R2, R3
- Vorwiderstanddropping resistor
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004025971A DE102004025971A1 (en) | 2004-05-18 | 2004-05-18 | Control circuit for electric fan in road vehicle has switch with contacts for several resistors in series with fan motor and thermo-relay in parallel with one resistor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004025971A DE102004025971A1 (en) | 2004-05-18 | 2004-05-18 | Control circuit for electric fan in road vehicle has switch with contacts for several resistors in series with fan motor and thermo-relay in parallel with one resistor |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004025971A1 true DE102004025971A1 (en) | 2005-12-08 |
Family
ID=35336162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004025971A Withdrawn DE102004025971A1 (en) | 2004-05-18 | 2004-05-18 | Control circuit for electric fan in road vehicle has switch with contacts for several resistors in series with fan motor and thermo-relay in parallel with one resistor |
Country Status (1)
Country | Link |
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DE (1) | DE102004025971A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006029788A1 (en) * | 2006-03-13 | 2007-09-20 | Visteon Global Technologies Inc., Van Buren | Switch for additional electrical heater of motor vehicle, has contact bushes designed to hold contact pin under formation of high current fixed electrical contact, and arranged one behind another along moving path |
DE102006015502A1 (en) * | 2006-03-13 | 2007-09-27 | Visteon Global Technologies Inc., Van Buren | Circuit-breaker for use in gradated speed adjustment of low-voltage electric motor, has contact bushes formed such that contact pin takes up contact bushes under formation of high current-firm electrical contact |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1814215A1 (en) * | 1968-12-12 | 1970-07-02 | Bosch Gmbh Robert | Small electric machine, especially small motor |
DE2155628A1 (en) * | 1971-11-09 | 1973-05-10 | Sueddeutsche Kuehler Behr | PROTECTIVE CIRCUIT ARRANGEMENT FOR FAN MOTORS IN VEHICLES |
DE3534500C2 (en) * | 1985-09-27 | 1989-08-31 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De |
-
2004
- 2004-05-18 DE DE102004025971A patent/DE102004025971A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1814215A1 (en) * | 1968-12-12 | 1970-07-02 | Bosch Gmbh Robert | Small electric machine, especially small motor |
DE2155628A1 (en) * | 1971-11-09 | 1973-05-10 | Sueddeutsche Kuehler Behr | PROTECTIVE CIRCUIT ARRANGEMENT FOR FAN MOTORS IN VEHICLES |
DE3534500C2 (en) * | 1985-09-27 | 1989-08-31 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006029788A1 (en) * | 2006-03-13 | 2007-09-20 | Visteon Global Technologies Inc., Van Buren | Switch for additional electrical heater of motor vehicle, has contact bushes designed to hold contact pin under formation of high current fixed electrical contact, and arranged one behind another along moving path |
DE102006015502A1 (en) * | 2006-03-13 | 2007-09-27 | Visteon Global Technologies Inc., Van Buren | Circuit-breaker for use in gradated speed adjustment of low-voltage electric motor, has contact bushes formed such that contact pin takes up contact bushes under formation of high current-firm electrical contact |
DE102006015502B4 (en) * | 2006-03-13 | 2008-06-19 | Visteon Global Technologies Inc., Van Buren | Stepped speed adjustment for a low voltage electric motor |
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Date | Code | Title | Description |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R012 | Request for examination validly filed |
Effective date: 20110419 |
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R016 | Response to examination communication | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |