WO1992020084A1 - A control circuit with timer function for an electrical consumer appliance - Google Patents

A control circuit with timer function for an electrical consumer appliance Download PDF

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Publication number
WO1992020084A1
WO1992020084A1 PCT/DK1992/000140 DK9200140W WO9220084A1 WO 1992020084 A1 WO1992020084 A1 WO 1992020084A1 DK 9200140 W DK9200140 W DK 9200140W WO 9220084 A1 WO9220084 A1 WO 9220084A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive circuit
voltage
circuit
supply
response
Prior art date
Application number
PCT/DK1992/000140
Other languages
French (fr)
Inventor
Claus Børge BRADE
Jesper Darum
Original Assignee
V. Kann Rasmussen Industri A/S
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 V. Kann Rasmussen Industri A/S filed Critical V. Kann Rasmussen Industri A/S
Publication of WO1992020084A1 publication Critical patent/WO1992020084A1/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/18Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H02J13/0001Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using modification of a parameter of the network power signal
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00036Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52Outage or fault management, e.g. fault detection or location
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

Definitions

  • a control circuit with timer function for an electric ⁇ al consumer appliance A control circuit with timer function for an electric ⁇ al consumer appliance.
  • the invention relates to a control circuit for connecting an electrical consumer appliance to a sup ⁇ ply mains during an adjustable pre-determined time interval, comprising a relay switch, coupled into the supply line to the consumer appliance, the relay coil of which is activated and deactivated by means of a drive circuit with a timer function.
  • the object of the present invention is to prov- ide a design of such a control circuit, which in a simple way provides the possibility of such a remote control without additional control wires between the remote control switch and the control circuit itself.
  • the control circuit accord- ing to the invention is characterized in the relay activating signal provided at the output of the drive circuit is generated in response to a change of the voltage level of a toggle signal supplied to the drive circuit and generated by a pulse-shaping circuit con- nected to the supply mains in response to a brief interruption of the supply voltage, whereas means are associated with an adjusting unit for supplying oper- ating voltage to the drive circuit for maintaining the operating voltage during such a brief interruption.
  • one or more remote control switches such as, e.g. spring loaded pressure couplers, can be placed in random positions along the supply line to the consuming appliance.
  • connection terminals for the consuming appliance e.g. an elect- rical drive motor for a fan
  • 3 and 4 designate connection terminals for the supply voltage
  • 5 is a pressure coupler, by means of which the supply volt ⁇ age can be disconnected during a brief time interval.
  • a relay switch 7 is coupled into the supply line 6, the activating coil 8 of which is connected to an output REL from a drive circuit 9.
  • the drive cir ⁇ cuit 9 is of the type having a built-in timer funct ⁇ ion, which is made adjustable by means of an RC cir ⁇ cuit 10 connected to an input OSC, and having a capac- itor C 3 , a fixed resistance R-. and a potentiometer P..
  • the drive circuit 9 is activated by means of a toggle signal supplied to an input TOG, for example so that the signal at the output REL changes level each time the toggle signal on the input TOG drops below a cert- ain level, whereby the timer function is reset at zero.
  • the relay 8 is activ ⁇ ated, the switch 7 of which is maintained connected during the connection time determined by the RC cir- cuit 10.
  • the supply voltage supplied to the terminals 3 and 4 is double rectified by means of the diode cir ⁇ cuits DI, D3, D4 and D9 and is reduced to a voltage level of, e.g. 24 V by means of the circuit R8 D5, Tl supplying the relay coil 8.
  • the reduced 24 V voltage which is decoupled by a capacitor C6 is peak rectified in the circuit D2 C5 and series regulated by means of a regulator cir ⁇ cuit 11 to a level of, e.g. 5 V.
  • a capacitor C5 of, e.g. 1000 ⁇ F serves to maintain the input voltage to the regulator circuit 10 at interruption of the supply voltage during a brief time interval, e.g. up to 5 seconds.
  • the operating voltage for the drive circuit 9 is taken from the output of the regulator circuit 11.
  • the regulator circuit is further arranged so that when the supply voltage is reestablished after an interruption of a longer duration, it produces a RESET signal at the output. This signal, the pulse width of which is determined by a capacitor C4, is supplied to a separate input ON on the drive circuit 9 and ensures that it always activates the relay 8, when the operat ⁇ ing voltage has been interrupted (cold start) .
  • the toggle signal to the input TOG of the drive circuit 9 is generated either by a brief activation of the pressure coupler 5 in the supply line or by activating a separate switch 12. In both cases a pulse-shaping circuit 13 connected to the supply main is affected.
  • the coupler 5 When the coupler 5 is closed and the switch 12 is off the input voltage will, through the double rectifier diodes D6 and D7 and the resistances R6 and R4, generate a direct current of, e.g. 6.2 V over the diode D12.
  • the coupler 5 If the coupler 5 is opened, whereby the supply voltage is interrupted, or the switch 12 is connected, the voltage over the diode D12 will de- crease, whereby the transistor T2 will conduct and charge the capacitor C7 to a voltage level of, e.g. 5 V.
  • the diode D13 As soon as the voltage over the capacitor C7 has risen above a certain lower level, e.g. 2.5 V, the diode D13 will conduct, and thereby the toggle signal on the input TOG will be dragged below the change-over level, e.g. 1.6 V.
  • the toggle input TOG in commercial embodi ⁇ ments of the drive circuit 11 e.g. like the circuit U 6047 B marketed by Telefunken Elektronic, is bounce protected so as to only react to pulses with a larger width than approx 1/12000 of the actual timer setting, which for example may be up to 60 minutes
  • the struct ⁇ ure of the pulse-shaping circuit is arranged so that such a pulse width is ensured by a built-in time con ⁇ stant of, e.g. 0.5 seconds for the trailing edge of the voltage over the diode D13. If the switch 12 is activated during a time interval shorter than, e.g.
  • the transistor T2 will block, as soon as the voltage over the diode D12 reaches a level of, e.g. 4 V.
  • the time delay occurs because the voltage over the capacitor C7 is discharged slowly through the resistance R3, and only when it reaches the afore ⁇ mentioned level of, e.g. 2.5 V, the diode D13 will block and the level of the toggle signal on the input TOG will assume its high level.
  • the resistance R4 serves to protect the switch 12 against the peak voltage when the capacitor C2 is discharged. If the adjusted 5 V voltage from the cir- cuit 11 has been disconnected the capacitor C7 is dis ⁇ charged through the diode D8 which ensures that the toggle function is activated immediately at reestabl- ishment of the supply voltage at cold start.
  • the dio ⁇ des D10 and Dll protect the circuit against voltage transients from the motor and the relay coil.

Abstract

A control circuit for connecting an electrical consumer appliance to a supply mains during an adjustable pre-determined time interval comprises a relay switch (7) coupled into the supply line (6) to the consumer appliance, the relay coil of which is activated and deactivated by means of a drive circuit (9) with a timer function. The relay activating signal is provided at the output of the drive circuit and is generated in response to a change of the voltage level of a toggle signal supplied to the drive circuit (9) and generated by a pulse-shaping circuit (13) connected to the supply mains in response to a brief interruption of the supply voltage. Means (C) are associated with an adjusting unit (11) for supplying operating voltage to the drive circuit for maintaining the operating voltage during such a brief interruption.

Description

A control circuit with timer function for an electric¬ al consumer appliance.
The invention relates to a control circuit for connecting an electrical consumer appliance to a sup¬ ply mains during an adjustable pre-determined time interval, comprising a relay switch, coupled into the supply line to the consumer appliance, the relay coil of which is activated and deactivated by means of a drive circuit with a timer function.
In connection with electrically operated fans or other, e.g. heat generating electrical consumer appliances having a built-in control circuit with ad¬ justable timer function it is often desirable to be able to switch the power on and off either by means of a an operator switch on the appliance itself or by remote control by means of a switch positioned at a distance from the appliance.
Such wishes are mainly based on energy saving, safety reasons and operation simplifying considerat¬ ions.
The object of the present invention is to prov- ide a design of such a control circuit, which in a simple way provides the possibility of such a remote control without additional control wires between the remote control switch and the control circuit itself. With a view hereto the control circuit accord- ing to the invention is characterized in the relay activating signal provided at the output of the drive circuit is generated in response to a change of the voltage level of a toggle signal supplied to the drive circuit and generated by a pulse-shaping circuit con- nected to the supply mains in response to a brief interruption of the supply voltage, whereas means are associated with an adjusting unit for supplying oper- ating voltage to the drive circuit for maintaining the operating voltage during such a brief interruption.
By letting the generation of the relay activ¬ ating signal depend on a brief interruption of the supply voltage one or more remote control switches such as, e.g. spring loaded pressure couplers, can be placed in random positions along the supply line to the consuming appliance.
In the following the invention is further explained with reference to the drawing which shows a diagram of an embodiment of a control circuit accord¬ ing to the invention.
In the diagram, 1 and 2 designate connection terminals for the consuming appliance, e.g. an elect- rical drive motor for a fan, whereas 3 and 4 designate connection terminals for the supply voltage, and 5 is a pressure coupler, by means of which the supply volt¬ age can be disconnected during a brief time interval. A relay switch 7 is coupled into the supply line 6, the activating coil 8 of which is connected to an output REL from a drive circuit 9. The drive cir¬ cuit 9 is of the type having a built-in timer funct¬ ion, which is made adjustable by means of an RC cir¬ cuit 10 connected to an input OSC, and having a capac- itor C3, a fixed resistance R-. and a potentiometer P.. The drive circuit 9 is activated by means of a toggle signal supplied to an input TOG, for example so that the signal at the output REL changes level each time the toggle signal on the input TOG drops below a cert- ain level, whereby the timer function is reset at zero. When the signal on the output REL assumes one of its two levels, e.g. low level, the relay 8 is activ¬ ated, the switch 7 of which is maintained connected during the connection time determined by the RC cir- cuit 10. The supply voltage supplied to the terminals 3 and 4 is double rectified by means of the diode cir¬ cuits DI, D3, D4 and D9 and is reduced to a voltage level of, e.g. 24 V by means of the circuit R8 D5, Tl supplying the relay coil 8.
The reduced 24 V voltage which is decoupled by a capacitor C6 is peak rectified in the circuit D2 C5 and series regulated by means of a regulator cir¬ cuit 11 to a level of, e.g. 5 V. A capacitor C5 of, e.g. 1000 μF serves to maintain the input voltage to the regulator circuit 10 at interruption of the supply voltage during a brief time interval, e.g. up to 5 seconds. The operating voltage for the drive circuit 9 is taken from the output of the regulator circuit 11. The regulator circuit is further arranged so that when the supply voltage is reestablished after an interruption of a longer duration, it produces a RESET signal at the output. This signal, the pulse width of which is determined by a capacitor C4, is supplied to a separate input ON on the drive circuit 9 and ensures that it always activates the relay 8, when the operat¬ ing voltage has been interrupted (cold start) .
In the embodiment shown the toggle signal to the input TOG of the drive circuit 9 is generated either by a brief activation of the pressure coupler 5 in the supply line or by activating a separate switch 12. In both cases a pulse-shaping circuit 13 connected to the supply main is affected.
When the coupler 5 is closed and the switch 12 is off the input voltage will, through the double rectifier diodes D6 and D7 and the resistances R6 and R4, generate a direct current of, e.g. 6.2 V over the diode D12. If the coupler 5 is opened, whereby the supply voltage is interrupted, or the switch 12 is connected, the voltage over the diode D12 will de- crease, whereby the transistor T2 will conduct and charge the capacitor C7 to a voltage level of, e.g. 5 V. As soon as the voltage over the capacitor C7 has risen above a certain lower level, e.g. 2.5 V, the diode D13 will conduct, and thereby the toggle signal on the input TOG will be dragged below the change-over level, e.g. 1.6 V.
As the toggle input TOG in commercial embodi¬ ments of the drive circuit 11, e.g. like the circuit U 6047 B marketed by Telefunken Elektronic, is bounce protected so as to only react to pulses with a larger width than approx 1/12000 of the actual timer setting, which for example may be up to 60 minutes, the struct¬ ure of the pulse-shaping circuit is arranged so that such a pulse width is ensured by a built-in time con¬ stant of, e.g. 0.5 seconds for the trailing edge of the voltage over the diode D13. If the switch 12 is activated during a time interval shorter than, e.g. 0.2 seconds, the transistor T2 will block, as soon as the voltage over the diode D12 reaches a level of, e.g. 4 V. The time delay occurs because the voltage over the capacitor C7 is discharged slowly through the resistance R3, and only when it reaches the afore¬ mentioned level of, e.g. 2.5 V, the diode D13 will block and the level of the toggle signal on the input TOG will assume its high level.
The resistance R4 serves to protect the switch 12 against the peak voltage when the capacitor C2 is discharged. If the adjusted 5 V voltage from the cir- cuit 11 has been disconnected the capacitor C7 is dis¬ charged through the diode D8 which ensures that the toggle function is activated immediately at reestabl- ishment of the supply voltage at cold start. The dio¬ des D10 and Dll protect the circuit against voltage transients from the motor and the relay coil.

Claims

P A T E N T C L A I M S
1. A control circuit, for connecting an elec¬ trical consumer appliance to a supply mains during an adjustable pre-determined time interval, comprising a relay switch (7) coupled into the supply line (6) to the consumer appliance, the relay coil of which is activated and deactivated by means of a drive circuit (9) with a timer function, c h a r a c t e r i z e d in that the relay activating signal provided at the output of the drive circuit is generated in response to a change of the voltage level of a toggle signal supplied to the drive circuit (9) and generated by a pulse-shaping circuit (13) connected to the supply mains in response to a brief interruption of the sup¬ ply voltage, whereas means (C) are associated with an adjusting unit (11) for supplying operating voltage to the drive circuit for maintaining the operating volt¬ age during such a brief interruption.
2. A control circuit as claimed in claim 1, c h a r a c t e r i z e d in that the pulse-shaping circuit (13) is further arranged so as to produce a toggle signal in response to activation of a separate switch (12) not affecting the supply voltage.
3. A control circuit as claimed in claim 1 or 2, c h a r a c t e r i z e d in that the drive cir- cuit (9) is arranged so as to generate the relay activating signal in response to a reset signal gener¬ ated by the adjusting unit (11) , when the supply is reestablished after interruption beyond said brief time interval.
PCT/DK1992/000140 1991-05-03 1992-05-01 A control circuit with timer function for an electrical consumer appliance WO1992020084A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK822/91 1991-05-03
DK91822A DK82291D0 (en) 1991-05-03 1991-05-03 CONTROL CIRCUIT WITH TIMER FUNCTION FOR AN ELECTRIC CONSUMER

Publications (1)

Publication Number Publication Date
WO1992020084A1 true WO1992020084A1 (en) 1992-11-12

Family

ID=8097949

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1992/000140 WO1992020084A1 (en) 1991-05-03 1992-05-01 A control circuit with timer function for an electrical consumer appliance

Country Status (2)

Country Link
DK (1) DK82291D0 (en)
WO (1) WO1992020084A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU670361B2 (en) * 1993-02-04 1996-07-11 Nokia Telecommunications Oy A method of transmitting and receiving coded speech
GB2297873A (en) * 1995-02-03 1996-08-14 Viscount International Limited Reversing light and audible warning control circuit
CN106783398A (en) * 2017-02-22 2017-05-31 江苏信息职业技术学院 A kind of dial-up type time relay and its control method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204149A (en) * 1977-07-18 1980-05-20 Cleary James J Electronic controlled-duration switching
US4292546A (en) * 1980-03-06 1981-09-29 Clark Warren P Apparatus for controlling power application
US4322632A (en) * 1980-03-24 1982-03-30 Teccor Electronics, Inc. Remote load selector
US4449161A (en) * 1982-07-16 1984-05-15 The Black & Decker Manufacturing Company One shot firing circuit for power tools

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204149A (en) * 1977-07-18 1980-05-20 Cleary James J Electronic controlled-duration switching
US4292546A (en) * 1980-03-06 1981-09-29 Clark Warren P Apparatus for controlling power application
US4322632A (en) * 1980-03-24 1982-03-30 Teccor Electronics, Inc. Remote load selector
US4449161A (en) * 1982-07-16 1984-05-15 The Black & Decker Manufacturing Company One shot firing circuit for power tools

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU670361B2 (en) * 1993-02-04 1996-07-11 Nokia Telecommunications Oy A method of transmitting and receiving coded speech
GB2297873A (en) * 1995-02-03 1996-08-14 Viscount International Limited Reversing light and audible warning control circuit
CN106783398A (en) * 2017-02-22 2017-05-31 江苏信息职业技术学院 A kind of dial-up type time relay and its control method

Also Published As

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