EP3084060A1 - Haushaltsgerät mit galvanisch getrennten schaltungsteilen - Google Patents
Haushaltsgerät mit galvanisch getrennten schaltungsteilenInfo
- Publication number
- EP3084060A1 EP3084060A1 EP14820784.8A EP14820784A EP3084060A1 EP 3084060 A1 EP3084060 A1 EP 3084060A1 EP 14820784 A EP14820784 A EP 14820784A EP 3084060 A1 EP3084060 A1 EP 3084060A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit part
- control device
- supply
- household appliance
- circuit
- 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
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/08—Control circuits or arrangements thereof
Definitions
- the invention relates to a household appliance having a circuit having a first circuit part and a second circuit part which is galvanically isolated from the first circuit part.
- the invention further relates to a method for operating the household appliance.
- the invention is particularly advantageous for use with a clothes dryer and / or a washing machine.
- the circuit has a transformer for inductive energy transfer from the first circuit part to the second circuit part.
- a disadvantage here is that even if the household appliance is switched off and is in a standby mode or "standby" mode, the second circuit part is constantly supplied via the transformer and thus consumes energy, e.g. due to a quiescent current.
- DE 10 2008 044 324 A1 discloses a domestic appliance with a main control unit and a measuring unit isolated from the main control unit, which has a measuring control unit which is coupled via a data transmission channel to the main control unit, via which a measured variable detectable by the measuring unit can be transmitted to the main control unit the data transmission channel is formed by a protective impedance having line. Also disclosed is a corresponding method for transmitting a measured variable, which is detected by means of a measuring unit in a domestic appliance and transmitted by a measuring control unit of the measuring unit via a data transmission channel to a main control unit of the domestic appliance which is isolated from the measuring unit.
- a domestic appliance comprising a circuit having a first circuit part, with a second circuit part galvanically separated from the first circuit part and with a third circuit part accommodated in the second circuit part, wherein the second circuit part has a first control device Supply of the third circuit part to interrupt, which first control means by means of the third circuit part is controlled and which first control means is adapted to produce the supply of the third circuit part for a predetermined period of time. Consequently, only the first control device needs to be activated for activating the third circuit part separated from its supply, whereupon it activates the third circuit part for at least the predetermined time duration.
- the self-holding period is sufficient for the third circuit part itself to be able to control the first control device and thus to hold itself in place
- the household appliance is consequently able to activate and deactivate the third circuit part in a manner which is easy to implement, so that no energy is consumed in the state of rest, the self-holding effecting a reliable maintenance of the supply of the third switching part, and, in principle, independently thereof.
- the first control device was first activated, ie the first control device may also be referred to as a "self-holding device".
- the control signals for driving or activating the first control device may be in particular trigger signals.
- the first control device is thus able to produce and interrupt a supply of the third circuit part.
- a preparation of the supply takes place in particular on activation of the first control device out for the predetermined holding period.
- the activation can in particular be done by a transmission of a suitable control signal to the first control device.
- the first control device can be re-energized (or "refreshed” or "refreshed"), in particular within the self-holding period, at least by the third circuit part.
- the first circuit part may have a connection (“external supply connection") for an external supply network and may be permanently connected to the external supply network, for example
- the external supply network may eg provide an AC voltage, eg of 1 10 V or 230 V.
- a transformer is present for supplying the second circuit part, which can be fed by means of the external supply connection of the first circuit part
- the transformer may in particular be a transformer
- a primary coil of the transformer may be connected to the supply connection of the first circuit part, and a secondary coil of the transformer
- the primary coil may therefore be associated, in particular, with the first circuit part, while the secondary coil may in particular be associated with the second circuit part n respective rectifier downstream.
- the household appliance may be a large household appliance, in particular a laundry treatment appliance such as a washing machine, a tumble dryer or a combination thereof (washer-dryer).
- the household appliance may also be eg a cooking appliance, for example a hob or an oven, for example an oven.
- the third circuit part may only comprise a part of the elements or may alternatively comprise all elements of the second circuit part.
- the first control means may itself make or break the supply of the third circuit part, or may at least one further element, e.g. a serial shutdown stage, in particular a switch, to control to make the supply of the third circuit part or interrupt.
- a circuit may be closed or interrupted.
- the turn-off stage may be integrated into the first control device.
- the first control device may for example be permanently supplied with its operation, as long as the first circuit part is connected to the external supply connection. It is a preferred for an energy saving development that the first control device by means of the incoming signals for their control is operable and thus in particular requires no dedicated supply. Rather, the electrical energy of the incoming signals from the first controller is used for their operation.
- the first control device may have at least one energy store for storing electrical energy of received control signals.
- the source from which the first control device is actuated to activate the third circuit part is basically not limited. It is a preferred embodiment that the first control device can be controlled by means of a second control device of the first circuit part.
- the second control device may in particular be a central control device of the domestic appliance ("main control device") .
- the second control device may be in the form of a microcontroller, a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC) ) and so on.
- the microcontroller represents the central control device or a part thereof, it may also be referred to as "main controller".
- the first circuit part has a switching power supply connectable to the external supply connection, by means of which at least the second control device can be supplied.
- an operating element may be actuated to switch on the household appliance.
- This operation is detected by the second control means, whereupon they - e.g. in the context of an initialization routine - the supply of the third circuit part manufactures.
- the second control device sends control signals to the first control device in order to control them.
- the second control device may also be used, for example, to control functional units of the domestic appliance, such as motors, fans, pumps, valves, electrical heating elements, heat pumps, etc., and / or is connected to at least one sensor.
- the third circuit part has a third control device and the first control device can be controlled by the third control device.
- the third controller may be in the form of a microcontroller, a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), etc.
- FPGA Field Programmable Gate Array
- ASIC Application Specific Integrated Circuit
- the third control device may, for example, be connected to one or more sensors and in particular may serve as a measuring control device or so-called "measuring island”.
- the first control device if it is activated to activate the third circuit part or to make the supply to the third circuit part, it closes directly (itself) or indirectly (for example via a switch) the circuit of the third circuit part and thus also of the third control device.
- the third control device then sends in particular control signals to the first circuit part, so that the first circuit part alone is already activated by these control signals or remains.
- the third control device can be supplied by means of a first power supply of the third circuit part and the first control device is adapted to produce the supply of this power supply for the self-holding duration.
- This power supply may be a circuit power supply.
- This power supply may be connected in series with the switch to the secondary side of the transformer. Consequently, when the home appliance is switched off or in its standby mode, the power supply unit of the third circuit part is not supplied with power, which enables a particularly high power saving.
- the first control device is thus in particular configured to interrupt or produce a supply of this power supply, whereby the supply of the third control device is interrupted or established.
- the first control device by means of the second control device and by means of the third control device is controllable - also an embodiment that the second control device connected to the third control device via at least one galvanically isolated data line.
- the galvanic isolation of a data line may be achieved, for example, by means of a respective opto-coupler introduced into a data line or a data channel.
- the second control device may also be connected to the third control device via at least one galvanically isolated data line.
- the second control device can send data (in particular a "command") to the third control device, so that the third control device then no longer sends any control signals to the first control device If the second control device no longer sends control signals to the first control device, the supply to the third circuit part is interrupted after expiration of the self-holding period, whereby it no longer consumes any current or electrical energy Receive a shutdown in particular a shutdown routine.
- the first control device by means of the second control device is controlled and the second control device is coupled to the third control device - further an embodiment that by means of the second control device signals can be emitted, both for data transmission to the third control device as well as to control the first control device are provided.
- data signals emitted by the second control device to the third control device can also be used to control the first control device. This makes it possible to dispense with a transmission of control data to the first control device via a separate data output of the second control device, which simplifies the design of the circuit and the second control device.
- a dedicated generation of drive signals of the second control device may be dispensed with separately from the data signals for the third control device, and the data signals may be used for the control instead of the third control device.
- the second control device does not need to be modified to activate the third circuit part, but needs for the activation only a data communication to start with the third control unit. In particular, therefore, the first circuit part does not need to be modified.
- the first control device is actuated and thereby held by the control signals (also referred to as "refresh signals") of the third control device the activation of the second control device then does not depend on the data signals of the second control device.
- This embodiment may be realized in such a way that the data line issuing from the second control unit branches into two branches, which lead to the first control device or to the third control device.
- the second control device is connected to the first control device via galvanically separated data lines, it is preferred to save an additional optocoupler that the branch is present in the second circuit part, ie in the signal direction behind the optocoupler.
- a switching stage in particular a serial switching stage, in particular a switch
- the first control means may output a suitable drive signal for driving the switching stage, in particular the switch, e.g. a trigger signal.
- This drive signal may cause the switching stage, in particular the switch, in particular to produce the supply of the third circuit part, e.g. by closing a circuit.
- the switching stage in particular the switch, may in particular be an electronic switching stage or an electronic switch, but in principle may also be another, eg mechanical, switch.
- the electronic switching stage or the electronic switch may in particular be a transistor or have at least one transistor.
- the at least one transistor may be, for example, a unipolar or a bipolar transistor.
- the unipolar transistor may in particular be a field-effect transistor (FET), in particular This is a JFET or a MISFET, in particular a MOSFET.
- FET field-effect transistor
- the bipolar transistor may be, for example, an IGBT.
- the object is also achieved by a method for operating a household appliance as described above, wherein in a switched-off state or in a standby mode of the household appliance, the third circuit part is disconnected from its supply and with a power on of the household appliance: the third circuit part is supplied and thereby the supply of the third circuit part is made at least for the predetermined self-holding duration; and the supplied third circuit part drives the first control device to maintain the supply of the third circuit part.
- This method gives the same advantages as the household appliance and may be designed analogously.
- the first control device is controlled by means of at least one signal generated by the second control device, which is provided for data transmission to the third control device or communication with the third control device.
- At least one signal generated by the second control device is converted by an optocoupler before the first control device.
- the single FIGURE shows a circuit 1 according to the invention of a household appliance H, for example a tumble dryer.
- the circuit 1 has two galvanically separate parts, namely a first circuit part 2 and a second circuit part 3.
- the first circuit part 2 has an external supply terminal for a supply voltage, which is designed here as a network input 4.
- the mains input 4 may be designed, for example, for a supply voltage in the form of an alternating voltage of 1 10 V or 230 V.
- the power input 4, a rectifier in the form of a half-wave rectifier is connected in series.
- the half-wave rectifier is designed here as a diode 5. Parallel to the mains input 4 is connected in smoothing capacitor 6.
- a primary side 7 of a transformer is further connected, in series connected to the diode 5 and parallel to the smoothing capacitor 6.
- the transformer is designed here as a transformer 8.
- the primary side 7 (e.g., a primary coil) of the transformer 8 is in turn connected in series with a power supply in the form of a switched mode power supply 9.
- a supply output 12 of the switched-mode power supply 9 is connected to a positive supply connection VDD of a second control device in the form of a microcontroller constructed with MOS circuits, which is referred to below as the main controller 13.
- the main controller 13 corresponds to the "second control device" described above, ie, the main controller 13 is supplied by the switched-mode power supply 9.
- a signal output 14 of the main controller 13 is connected to an input of a first optocoupler 15.
- a signal input 16 of the main controller 13 is connected to an output of a second optocoupler 17 connected.
- the second circuit part 3 of the circuit 1 has a secondary side 18 of the transformer 8 for its power or voltage supply.
- the secondary side 18 is connected in series with a diode 19, which can serve as a half-wave rectifier.
- the diode 19 is connected here with its anode terminal to a first terminal of the secondary side 18 of the transformer 8 and with its cathode terminal to a first terminal 20 of an electronic switch 21.
- the switch 21 is designed here as a series transistor.
- a second terminal 22 of the switch 21 is connected to a first supply terminal 23 of a power supply 24.
- a second supply terminal 25 of the power supply 24 is connected to the second terminal of the secondary side 18 of the transformer 8. The power supply 24 is thus connected in series with the switch 21.
- the connection between its first terminal 20 and its second terminal 22 can optionally be made and interrupted be, by a suitable control of a control input 26 of the switch 21st
- the power supply 24 is disconnected from the secondary side 18 of the transformer 8 and thus from its supply.
- a supply output 27 of the power supply 24 is connected to a positive supply connection VDD of a third control device in the form of a further microcontroller constructed with MOS circuits.
- This microcontroller is referred to below as "satellite controller” 28 and corresponds to the "third control device” described above.
- the satellite controller 28 may e.g. serve as a measurement controller or as a part thereof.
- a negative terminal VSS of the satellite controller 28 is connected to the second terminal of the secondary side 18 of the transformer 8 and consequently also to the second supply terminal 25 of the power supply 24.
- the power supply 24 and the satellite controller 28 together form a third circuit part 10 which is accommodated in the second circuit part 3.
- the satellite controller 28 has a plurality of input / output ports ("I / O ports"), namely a first signal output 29, a second signal input 30 and a third signal output 31.
- the first signal output 29 is connected to an input of the second optocoupler 17 and the second signal input 30 is connected to an output of the first optocoupler 15.
- the first signal output 29 of the satellite controller 28 is connected via the second optocoupler 17 to the signal input 16 of the main controller 13, galvanically separated by the second optocoupler 17.
- Analog the second signal input 30 of the satellite controller 28 is connected via the first optical coupler 15 to the signal output 14 of the main controller 13. This results in a galvanically separated data coupling of the main controller 13 and the satellite controller 28.
- each other optocoupler s 15 is also connected or connected to an input of a further control device of the second circuit part 3.
- This control device corresponds to the "first control device” described above and is referred to below as a self-holding device 35.
- a control output 36 of the self-holding device 35 is connected to the control input 26 of the switch 21. Consequently, the main controller 13, the self-holding device 35 selectively activate and deactivate, which in turn actuates the switch 21 accordingly, whereby a power or voltage supply of the power supply 24 can be selectively established and interrupted.
- the current or voltage supply or the operation of the third circuit part 10 can be activated and deactivated by the main controller 13.
- the output of the first optocoupler 15 thus follows a branch 32, which branches on the one hand to the second signal input 30 of the satellite controller 28 and on the other hand to an input of the self-holding device 35.
- Data signals sent by the signal output 14 of the main controller 13 thus pass via the first optical coupler 15 both to the second signal input 30 of the satellite controller 28 and to the input of the self-holding device 35.
- an input of the latch 35 is connected to the third signal output 31 of the satellite controller 28, to the same input connected to the first optocoupler 15 or to another input. Consequently, the satellite controller 28 may also drive the self-holding device 35 and thereby selectively activate and deactivate it.
- the self-holding device 35 is constructed such that it activates the switch 21 for the predetermined self-holding duration after receipt of a control signal (eg from the main controller 13 or the first optical coupler 15 or from the satellite controller 28) and thus supplies the supply for the self-holding period the power supply 24 manufactures. This can be done, for example, by the output of a trigger signal at the control output 36. In this case, the self-holding period can be longer in particular than a minimum duration of the drive signals.
- the self-holding device 35 may, for example, an energy storage, e.g. a capacitor, which stores the electrical energy of the received drive signals. For a permanent activation of the switch 21, therefore, a reception of a sequence of drive signals is sufficient at the self-holding device 35, the time interval of which does not reach or exceed the self-holding duration.
- an energy storage e.g. a capacitor
- the household appliance H is typically permanently connected to the mains input 4 after being set up by a user.
- At the mains input 4 is usually an AC voltage signal through the diode 5 and the smoothing capacitor 6 in a smoothed, but still wavy, DC signal is converted.
- This DC voltage signal is fed to the primary side 7 of the transformer 8 and thereby generates an alternating magnetic field, which is inductively received by the secondary side 18.
- a "galvanically isolated" supply voltage for the second circuit part 3 is thus provided on the secondary side 18.
- at least the first optocoupler 15 may be operated by the galvanically isolated supply voltage, namely permanently.
- the smoothed DC voltage signal of the first circuit part also serves to supply the switching power supply 9, which generates a constant supply voltage for the main controller 13 thereof.
- the main controller 13 attempts to communicate with the satellite controller 28 and sends, in particular digital, data signals via its signal output 14 to the input of the first opto-coupler 15 Consequently, correlated signals are generated at the output of the first optocoupler 15, which reach the second signal input 30 of the satellite controller 28 via the branch 32 on the one hand and to the input of the self-holding device 35 on the other hand.
- the self-holding device 35 uses the incoming data signals as drive signals to output via its control output 36, a control signal to the control input 26 of the switch 21, whereupon the switch 21 closes and thereby closes the circuit between the secondary side 18 of the transformer 8 and the power supply 24. Consequently, the power supply 24 can supply the galvanically isolated supply Use voltage to generate at its supply output 27, a supply voltage for operating the satellite controller 28.
- the satellite controller 28 goes high and outputs via the third signal output 31 a signal (eg a "Refresh" signal) which is received at the self-holding device 35 and ensures that the self-holding device 35 remains activated and the switch 21 is closed
- a self-holding function of the satellite controller 28 is provided, which has been initiated by the main controller 13.
- the data signals of the main controller 13 and the first optical coupler 15 branched off at the branch 32 are further received and can be used as additional refresh signals.
- a switch-off command to the satellite controller 28 may be sent, in particular, from the main controller 13 via its signal output 14, and thereafter no signals are sent out via the signal output 14.
- the signal output 14 of the main controller 13 may therefore be muted, in particular after transmission of the switch-off command.
- the satellite controller 28 closes, e.g. its still running processes and then leaves the self-holding device 35 (so sends, for example, no more signals via its third signal output 31).
- the switch 21 is opened after the self-holding time predetermined by the self-holding device 35, and the supply to the third circuit part 10 is interrupted.
- the self-holding duration may be e.g. depend on a dimensioning of the associated energy storage.
- This circuit 1 has the advantage that it enables a power saving possibility by at least partial shutdown of galvanically separated areas or parts in a way that is easy to implement.
- the power supply 24 and the satellite controller 28 are separable from their supply. This can be realized without additional communication channels.
- the present invention is not limited to the embodiment shown.
- a bridge rectifier instead of the half-wave rectifier, a bridge rectifier, a center rectifier, etc. can be used.
- "on”, “an”, etc. may be taken to mean a singular or a plurality, in particular in the sense of “at least one” or “one or more”, etc., as long as this is not explicitly excluded, eg by the expression “exactly a "etc.
- a number may include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Selective Calling Equipment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013226386.4A DE102013226386A1 (de) | 2013-12-18 | 2013-12-18 | Haushaltsgerät mit galvanisch getrennten Schaltungsteilen |
| PCT/EP2014/077477 WO2015091229A1 (de) | 2013-12-18 | 2014-12-12 | Haushaltsgerät mit galvanisch getrennten schaltungsteilen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3084060A1 true EP3084060A1 (de) | 2016-10-26 |
| EP3084060B1 EP3084060B1 (de) | 2017-10-18 |
Family
ID=52232148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14820784.8A Active EP3084060B1 (de) | 2013-12-18 | 2014-12-12 | Haushaltsgerät mit galvanisch getrennten schaltungsteilen |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3084060B1 (de) |
| CN (1) | CN105814251B (de) |
| DE (1) | DE102013226386A1 (de) |
| RU (1) | RU2644328C2 (de) |
| WO (1) | WO2015091229A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3561389B1 (de) * | 2018-04-27 | 2021-01-27 | Electrolux Appliances Aktiebolag | Für bereitschaftsbetrieb angepasstes haushaltsgerät |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19808839C1 (de) * | 1998-03-03 | 1999-07-01 | Whirlpool Co | Wäschetrockner mit Prozeßsteuerung und Leitwertsensor |
| JP2000232235A (ja) * | 1999-02-09 | 2000-08-22 | Rohm Co Ltd | 半導体装置 |
| CN2888508Y (zh) * | 2005-09-10 | 2007-04-11 | 海尔集团公司 | 家电零待机功耗控制电路 |
| DE102006054539B3 (de) * | 2006-11-20 | 2008-02-14 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zur Erzeugung einer Niederspannungsversorgung einer elektrischen Steuereinrichtung |
| DE102008044324A1 (de) | 2008-12-03 | 2010-06-10 | BSH Bosch und Siemens Hausgeräte GmbH | Hausgerät mit einer Messinsel und Verfahren zum Übertragen einer Messgröße |
| CN201656802U (zh) * | 2009-06-12 | 2010-11-24 | 浙江绍兴苏泊尔生活电器有限公司 | 一种家电零待机功耗电路 |
| CN201536434U (zh) * | 2009-09-25 | 2010-07-28 | 美的集团有限公司 | 一种电磁炉电路 |
| CN101714480A (zh) * | 2009-11-13 | 2010-05-26 | 袁欲晓 | 静电驱动继电器的方法及静电驱动开关 |
| DE102011011956A1 (de) * | 2011-02-22 | 2012-08-23 | Diehl Ako Stiftung & Co. Kg | Elektronisches Haushaltsgerät |
| CN102505415B (zh) * | 2011-10-19 | 2013-11-27 | 合肥荣事达三洋电器股份有限公司 | 全自动洗衣机控制器零功耗待机的控制电路及其控制方法 |
| KR101365602B1 (ko) * | 2011-10-21 | 2014-03-14 | 삼성전자주식회사 | 전원 공급 장치 및 그를 포함하는 화상 형성 장치 |
| CN103425056B (zh) * | 2012-05-15 | 2016-05-04 | 珠海格力电器股份有限公司 | 准零功耗待机控制电路装置及控制方法 |
| US8976561B2 (en) * | 2012-11-14 | 2015-03-10 | Power Integrations, Inc. | Switch mode power converters using magnetically coupled galvanically isolated lead frame communication |
-
2013
- 2013-12-18 DE DE102013226386.4A patent/DE102013226386A1/de not_active Withdrawn
-
2014
- 2014-12-12 CN CN201480069273.XA patent/CN105814251B/zh active Active
- 2014-12-12 EP EP14820784.8A patent/EP3084060B1/de active Active
- 2014-12-12 WO PCT/EP2014/077477 patent/WO2015091229A1/de not_active Ceased
- 2014-12-12 RU RU2016126546A patent/RU2644328C2/ru active
Also Published As
| Publication number | Publication date |
|---|---|
| RU2644328C2 (ru) | 2018-02-08 |
| CN105814251A (zh) | 2016-07-27 |
| DE102013226386A1 (de) | 2015-06-18 |
| WO2015091229A1 (de) | 2015-06-25 |
| RU2016126546A (ru) | 2018-01-23 |
| EP3084060B1 (de) | 2017-10-18 |
| CN105814251B (zh) | 2018-01-02 |
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