EP2024553B1 - Circuit arrangement and method for operating a peltier module on a heat pump in a domestic appliance - Google Patents
Circuit arrangement and method for operating a peltier module on a heat pump in a domestic appliance Download PDFInfo
- Publication number
- EP2024553B1 EP2024553B1 EP07728217.6A EP07728217A EP2024553B1 EP 2024553 B1 EP2024553 B1 EP 2024553B1 EP 07728217 A EP07728217 A EP 07728217A EP 2024553 B1 EP2024553 B1 EP 2024553B1
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- EP
- European Patent Office
- Prior art keywords
- peltier
- operating
- peltier module
- module
- groups
- 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.)
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Classifications
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- 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
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/206—Heat pump arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
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- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
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- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/50—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to heat pumps, e.g. pressure or flow rate
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- 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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/26—Heat pumps
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- 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
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- 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
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
- D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/021—Control thereof
- F25B2321/0212—Control thereof of electric power, current or voltage
Definitions
- the invention relates to a method and a circuit arrangement for operating a Peltier module of a domestic appliance for the care of laundry items, in particular a tumble dryer, such as in FR-A-1, 262, 399 is described.
- Peltier-Element in construction and function is described.
- the half elements of this Peltier element are formed in columns or cuboid and consist of doped semiconductors as materials.
- the semiconductors are in particular bismuth telluride and a p-type doped semiconductor and an n-type doped semiconductor are used.
- a half element of the p-type doped semiconductor and a half element of the n-type doped semiconductor are each connected to one side via a printed circuit board, also referred to as a metal bridge, and at another side, which is opposite said one side, connected in each case via a further printed circuit board with a further half-element or a connection contact for connection of the Peltier element to an electrical network.
- a printed circuit board also referred to as a metal bridge
- a circuit arrangement according to the invention is designed to operate a Peltier module of a heat pump of a domestic appliance, which is designed in particular for the care of laundry items.
- the Peltier module has a plurality of Peltier elements, wherein at least two Peltier groups are provided, each of which comprises at least one Peltier element.
- the circuit comprises Furthermore, a multi-phase voltage regulator, which is electrically connected to the Peltier groups and is designed for separate voltage regulation of the individual Peltier groups. This allows a reduced power consumption of the Peltier module.
- the Peltier module is operable compared to a Peltier module without Peltier groups with a lower operating voltage.
- the operating voltage of the Peltier module is preferably a DC voltage less than 120V, in particular less than 70V, in particular about 60V.
- the circuit arrangement preferably comprises first means with which at least one first operating parameter of the Peltier module can be detected in a first operating phase of the Peltier module, and second means with which in a second operating phase of the Peltier module at least one second operating parameter of the Peltier module can be detected, and a switching regulator, with which from the detected operating parameters degrees of moisture introduced in the household appliance and to be dried objects, in particular laundry, can be determined and depending on the further operating process is controlled.
- Information of the Peltier module can thereby be used to further set the operating process of the domestic appliance and in particular the Peltier module, whereby a more precise control is possible.
- the Peltier module is subdivided into at least two Peltier groups, each of which has at least two Peltier elements, wherein the respective Peltier groups are separately powered by a multi-phase voltage regulator.
- the Peltier module is preferably operated at a lower operating voltage compared to a Peltier module without Peltier groups.
- the Peltier module with a DC voltage less than 120V, in particular less than 70V, in particular about 60V supplied.
- a first operating phase of a Peltier module of a heat pump of the domestic appliance preferably at least one first operating parameter of the Peltier module and in a second operating phase at least a second operating parameter of the Peltier module is detected, depending on these detected operating parameters moisture levels of objects to be dried in the domestic appliance , In particular laundry, be determined and depending on the further operation process is set.
- FIGS. 1 and 2 each show a circuit diagram of a circuit arrangement for operating a Peltier module. Identical or functionally identical elements in the figures each have the same reference numerals.
- a Peltier module 1 is schematically illustrated, which is intended to be used in a Peltier heat pump for a designed as a tumble domestic appliance.
- the Peltier module 1 comprises in each case four times three series-connected Peltier elements 2, that is to say twelve Peltier elements 2; however, the Peltier module 1 is not set to this number.
- this is first provided as a conventional AC voltage with 120 V or 230 V (120 VAC / 230 VAC), wherein here the connections L and N are shown schematically.
- the AC voltage is rectified by a mains rectifier 3, which has a conventional construction.
- a capacitor 4 is provided as a buffer and connected in parallel with the DC-side terminals of the mains rectifier 3.
- a mains current measurement and a mains voltage measurement are carried out, the circuit part 5 being electrically connected to a switching regulator 6 and the measured values to the switching regulator 6 for evaluation and further processing are transferable.
- the switching regulator 6 can be designed as a microprocessor.
- the circuit arrangement comprises a driver circuit 7, a circuit part 8 and a voltage transducer 9, which are assigned to a multi-phase voltage regulator in addition to the switching regulator 6.
- the switching regulator 6 can be electrically connected to a control and monitoring unit (not shown) of the household appliance via a communication interface (not shown), via which nominal values and actual values of various parameters, in particular of the Peltier module 1, can be transmitted.
- a temperature sensor 10 in this case a PTC resistor, is arranged at the Peltier module 1.
- an AC-side switch 14 can be actuated by means of a relay drive circuit 12, whereby the entire Peltier module 1 is switched off depending on the switch position.
- an NTC resistor 11 is arranged on the Peltier module 1, which is likewise designed for temperature determination and transmits the detected measured values to the switching regulator 6.
- a first operating phase of the tumble dryer is initially set in the exemplary embodiment, in which case the Peltier module 1 of a heat pump of the tumble dryer is energized.
- the Peltier module 1 is connected to the rectified mains voltage, to which the transistors 8a and 8b are connected accordingly.
- a second operating phase is subsequently set to predefinable phases of the drying process, for which purpose the Peltier module 1 is disconnected from the power supply by the transistors 8a and 8b being switched accordingly.
- the temperatures of a cold side and a warm side of the Peltier module 1 are determined.
- the thermoelectric voltage generated by the Peltier module 1 after separation from the power supply is measured, from which the temperature difference between the cold side and the warm side of the Peltier module 1 in the switching regulator 6 is determined.
- a local temperature of the Peltier module 1 is determined via the NTC resistor 11, which in particular represents the temperature of the hot side or an average temperature of the Peltier module 1.
- the temperature difference and the local temperature of the Peltier module 1 can then be the temperature of the cold side of the Peltier module 1 and, if not present, the warm side of the Peltier module 1, calculated.
- the Peltier module 1 is again connected to the power supply by the transistors 8a and 8b are switched accordingly and thereby again the first phase of operation of the clothes dryer and the Peltier module 1 is set.
- the power consumption of the Peltier module 1 is then measured after connecting it with the power supply until setting a desired operating point of the Peltier module 1.
- the Peltier module 1 comprises four Peltier groups 1 a, 1 b, 1 c and 1 d, each of which has a plurality of Peltier elements, in each case three Peltier elements 2 in each case.
- the Peltier groups 1a to 1d are formed as separate components and with a multi-phase voltage regulator, which the switching regulator 6, the driver circuit 7, the Circuit part 8 with the switching transistors 8a and 8b, and the voltage transducer 9 comprises.
- each Peltier group 1 a, 1 b, 1 c and 1 d may comprise only a single Peltier element; However, it serves a desirable simplicity of the circuit arrangement to combine several Peltier elements in a Peltier group. It is particularly advantageous to combine in each case such Peltier elements that are operated in the Peltier module 1 under substantially the same conditions.
- Each of the Peltier groups 1a to 1d can be supplied separately by the multi-phase voltage regulator with a corresponding voltage.
- the transistors 8a and / or 8b can be controlled accordingly, whereby an applied and rectified mains voltage is transmitted to the separate Peltier groups 1 a to 1 d.
- the multi-phase voltage regulator includes only a switching regulator 6, a driver circuit 7, and a circuit portion 8 with switching transistors 8a and 8b, the output power of the multi-phase voltage regulator and thus the power consumption of the Peltier groups 1 a to 1 d according to the respective requirements of the operating process adjust.
- only one transformer 13 having a primary winding 13a and secondary windings 13b is present. From the secondary windings 13b, terminals with rectifier arrangements lead to the Peltier groups 1a to 1d in order to supply them with electricity independently of one another, that is to say with individually preset values.
- FIG. 1 are all secondary windings 13 b connected in series, so that the Peltier groups 1 a to 1 d are supplied from different numbers of secondary windings with electricity. This requires a specification according to graded electrical operating data of the Peltier groups 1 a to 1 d, this gradation is variable within wide limits.
- FIG. 2 are the secondary windings 13b - and thus the Peltier groups 1a to 1d - connected in parallel. At a possibly slightly increased Effort in the transformer 13 is thus for each Peltier group 1 a to 1 d an individual adjustment according to their operating data required.
- the Peltier module 1 is also in each case operable with a lower operating voltage compared to a conventional Peltier module, which has no grouping and thus no Peltier groups.
- the operating voltage is a DC voltage of about 60 V.
- the circuit arrangements according to FIG. 1 and FIG. 2 are each designed such that the Peltier module 1 is operable in a first operating phase and in a second operating phase.
- the Peltier module In a first operating phase, the Peltier module is supplied with energy and thus connected via the multiphase voltage regulator 6, 7, 8 and 9 by a corresponding circuit of the transistors 8a and 8b with the mains voltage.
- the electrical power consumption of the Peltier module 1 or the power consumption of the individual Peltier groups 1a to 1d can be determined as operating parameters.
- a second operating phase of the Peltier module 1 this is decoupled from the mains voltage, in which the transistors 8a and 8b are switched accordingly.
- the temperature difference between the cold side and the warm side of the Peltier module 1 from an induced by the Seebeck effect thermoelectric voltage of the Peltier module 1 by means of the voltage transducer 9 are determined as operating parameters.
- the temperature of the cold side of the Peltier module 1 is then determined from this obtained temperature difference and from the temperature information of the hot side, which is obtained by the NTC resistor or the temperature sensor 11. From these temperature information and the electrical power consumption of the Peltier module 1, the moisture already condensed out of the items of laundry contained in the household appliance can then be determined via characteristic curves and / or calculation models. From this moisture level can then be determined in turn the remaining moisture in the laundry.
- a comparison with a reference moisture is then carried out, wherein the reference moisture characterizes a degree of moisture which at the moment of the drying process with regard to an optimal drying process should be achieved.
- the further operating process of the domestic appliance and thus also the further drying process is then controlled, in which the Peltier groups 1a to 1d and thus the entire Peltier module 1 are controlled with regard to the achievement of the predetermined optimum drying.
- the domestic appliance can also be designed as a dishwasher, which has a heat pump and a circuit arrangement just described.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Description
Die Erfindung betrifft ein Verfahren sowie eine Schaltungsanordnung zum Betreiben eines Peltier-Moduls eines Hausgeräts zur Pflege von Wäschestücken, insbesondere eines Wäschetrockners, wie beispielsweise in
Aus einem Dokument, welches am 25.11.2005 von der Internetadresse http://de.wikipedia.org/wiki/Peltier-Element herunterladbar war, ist ein Peltier-Element in Aufbau und Funktion beschrieben. Die Halbelemente dieses Peltier-Elements sind säulen- oder quaderförmig ausgebildet und bestehen aus dotierten Halbleitern als Werkstoffe. Die Halbleiter sind insbesondere Wismut-Tellurid und es kommen ein p-leitend dotierter und ein n-leitend dotierter Halbleiter zum Einsatz. Jeweils ein Halbelement aus dem p-leitend dotierten Halbleiter und ein Halbelement aus dem n-leitend dotierten Halbleiter sind jeweils an einer Seite über ein Leiterplättchen, auch als Metallbrücke bezeichnet, miteinander verbunden, und an einer anderen Seite, welcher der genannten einen Seite gegenüberliegt, über jeweils ein weiteres Leiterplättchen mit einem weiteren Halbelement oder einem Anschlusskontakt zum Anschluss des Peltier-Elements an ein elektrisches Netzwerk verbunden.From a document, which was downloadable on 25.11.2005 from the Internet address http://de.wikipedia.org/wiki/Peltier-Element, a Peltier element in construction and function is described. The half elements of this Peltier element are formed in columns or cuboid and consist of doped semiconductors as materials. The semiconductors are in particular bismuth telluride and a p-type doped semiconductor and an n-type doped semiconductor are used. In each case a half element of the p-type doped semiconductor and a half element of the n-type doped semiconductor are each connected to one side via a printed circuit board, also referred to as a metal bridge, and at another side, which is opposite said one side, connected in each case via a further printed circuit board with a further half-element or a connection contact for connection of the Peltier element to an electrical network.
Weitere Hinweis zu Grundlagen, anwendungsbezogener Auswahl und Montage von Peltier-Elementen ergeben sich aus Dokumenten, die am 25.11.2005 von den Internet-Adressen http://www.quick-ohm.de/waerme/download/Erlaeuterung-zu-Peltierelementen.pdf und http://www.quick-ohm.de/waerme/download/Einbau.pdf herunterladbar waren.Further information on the basics, application-specific selection and installation of Peltier elements can be found in documents published on 25.11.2005 from the Internet addresses http://www.quick-ohm.de/waerme/download/Erlaeuterung-zu-Peltierelementen. pdf and http://www.quick-ohm.de/waerme/download/Einbau.pdf were downloadable.
Aus der
Aus der
Eine aus einem in der Datensammlung "Patent Abstracts of Japan" zur
Es ist Aufgabe der Erfindung, den Betrieb eines Peltier-Moduls einer Wärmepumpe eines Hausgeräts zu verbessern.It is an object of the invention to improve the operation of a Peltier module of a heat pump of a domestic appliance.
Die Aufgabe wird durch eine Schaltungsanordnung, welche die Merkmale nach Patentanspruch 1 aufweist, und ein Verfahren, welches die Merkmale nach Patentanspruch 4 aufweist, gelöst.The object is achieved by a circuit arrangement which has the features according to claim 1, and a method having the features according to claim 4.
Eine erfindungsgemäße Schaltungsanordnung ist zum Betreiben eines Peltier-Moduls einer Wärmepumpe eines Hausgeräts, welches insbesondere zur Pflege von Wäschestücken ausgebildet ist, konzipiert. Das Peltier-Modul weist eine Mehrzahl an Peltier-Elementen auf, wobei zumindest zwei Peltier-Gruppen vorgesehen sind, von denen jede zumindest ein Peltier-Element umfasst. Die Schaltungsanordnung umfasst des Weiteren einen Multiphasenspannungsregler, welcher mit den Peltier-Gruppen elektrisch verbunden ist und zur separaten Spannungsregelung der einzelnen Peltier-Gruppen ausgebildet ist. Dies ermöglicht einen reduzierten Leistungsverbrauch des Peltier-Moduls.A circuit arrangement according to the invention is designed to operate a Peltier module of a heat pump of a domestic appliance, which is designed in particular for the care of laundry items. The Peltier module has a plurality of Peltier elements, wherein at least two Peltier groups are provided, each of which comprises at least one Peltier element. The circuit comprises Furthermore, a multi-phase voltage regulator, which is electrically connected to the Peltier groups and is designed for separate voltage regulation of the individual Peltier groups. This allows a reduced power consumption of the Peltier module.
Vorzugsweise ist das Peltier-Modul im Vergleich zu einem Peltier-Modul ohne Peltier-Gruppen mit einer geringeren Betriebsspannung betreibbar. Die Betriebsspannung des Peltier-Moduls ist bevorzugt eine Gleichspannung kleiner 120V, insbesondere kleiner 70V, insbesondere etwa 60V.Preferably, the Peltier module is operable compared to a Peltier module without Peltier groups with a lower operating voltage. The operating voltage of the Peltier module is preferably a DC voltage less than 120V, in particular less than 70V, in particular about 60V.
Vorzugsweise umfasst die Schaltungsanordnung erste Mittel, mit welchen in einer ersten Betriebsphase des Peltier-Moduls zumindest ein erster Betriebsparameter des Peltier-Moduls erfassbar ist, und zweite Mittel, mit welchen in einer zweiten Betriebsphase des Peltier-Moduls zumindest ein zweiter Betriebsparameter des Peltier-Moduls erfassbar ist, und einen Schaltregler, mit welchem aus den erfassten Betriebsparametern Feuchtegrade der in dem Hausgerät eingebrachten und zu trocknenden Gegenstände, insbesondere Wäschestücke, ermittelbar sind und abhängig davon der weitere Betriebsprozess steuerbar ist. Informationen des Peltier-Moduls können dadurch zum weiteren Einstellen des Betriebsprozesses des Hausgeräts und insbesondere des Peltier-Moduls verwendet werden, wodurch eine exaktere Steuerung möglich ist.The circuit arrangement preferably comprises first means with which at least one first operating parameter of the Peltier module can be detected in a first operating phase of the Peltier module, and second means with which in a second operating phase of the Peltier module at least one second operating parameter of the Peltier module can be detected, and a switching regulator, with which from the detected operating parameters degrees of moisture introduced in the household appliance and to be dried objects, in particular laundry, can be determined and depending on the further operating process is controlled. Information of the Peltier module can thereby be used to further set the operating process of the domestic appliance and in particular the Peltier module, whereby a more precise control is possible.
Bei einem erfindungsgemäßen Verfahren zum Betreiben eines Peltier-Moduls einer Wärmepumpe eines Hausgeräts, welches insbesondere zur Pflege von Wäschestücken ausgebildet ist und eine Mehrzahl an Peltier-Elementen aufweist, wird das Peltier-Modul zumindest in zwei Peltier-Gruppen unterteilt, von denen jede zumindest zwei Peltier-Elemente umfasst, wobei die jeweiligen Peltier-Gruppen separat durch einen Multiphasenspannungsregler spannungsversorgt werden.In a method according to the invention for operating a Peltier module of a heat pump of a domestic appliance, which is designed in particular for the care of laundry items and has a plurality of Peltier elements, the Peltier module is subdivided into at least two Peltier groups, each of which has at least two Peltier elements, wherein the respective Peltier groups are separately powered by a multi-phase voltage regulator.
Das Peltier-Modul wird bevorzugter Weise im Vergleich zu einem Peltier-Modul ohne Peltier-Gruppen mit einer geringeren Betriebsspannung betrieben. Vorzugsweise wird das Peltier-Modul mit einer Gleichspannung kleiner 120V, insbesondere kleiner 70V, insbesondere etwa 60V, versorgt.The Peltier module is preferably operated at a lower operating voltage compared to a Peltier module without Peltier groups. Preferably, the Peltier module with a DC voltage less than 120V, in particular less than 70V, in particular about 60V supplied.
In einer ersten Betriebsphase eines Peltier-Moduls einer Wärmepumpe des Hausgeräts wird vorzugsweise zumindest ein erster Betriebsparameter des Peltier-Moduls und in einer zweiten Betriebsphase zumindest ein zweiter Betriebsparameter des Peltier-Moduls erfasst, wobei abhängig von diesen erfassten Betriebsparametern Feuchtegrade von im Hausgerät zu trocknenden Gegenständen, insbesondere Wäschestücken, bestimmt werden und abhängig davon der weitere Betriebsprozess eingestellt wird.In a first operating phase of a Peltier module of a heat pump of the domestic appliance, preferably at least one first operating parameter of the Peltier module and in a second operating phase at least a second operating parameter of the Peltier module is detected, depending on these detected operating parameters moisture levels of objects to be dried in the domestic appliance , In particular laundry, be determined and depending on the further operation process is set.
Vorteilhafte Ausgestaltungen der erfindungsgemäßen Schaltungsanordnung sind als vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens anzusehen.Advantageous embodiments of the circuit arrangement according to the invention are to be regarded as advantageous embodiments of the method according to the invention.
Ausführungsbeispiele der Erfindung wird nachfolgend anhand einer schematischen Zeichnung näher erläutert. Die
Zunächst wird auf beide Figuren gemeinsam Bezug genommen.First, reference is made to both figures together.
In jeder Figur ist schematisch ein Peltier-Modul 1 veranschaulicht, welches zur Verwendung in einer Peltier-Wärmepumpe für ein als Wäschetrockner ausgebildetes Hausgerät dienen soll. Das Peltier-Modul 1 umfasst jeweils viermal drei in Reihe geschaltete Peltier-Elemente 2, zusammen also zwölf Peltier-Elemente 2; das Peltier-Modul 1 ist jedoch nicht auf diese Zahl festgelegt.In each figure, a Peltier module 1 is schematically illustrated, which is intended to be used in a Peltier heat pump for a designed as a tumble domestic appliance. The Peltier module 1 comprises in each case four times three series-connected Peltier
Zur Erzeugung der gleichgerichteten Netzspannung wird zunächst diese als übliche Wechselspannung mit 120 V oder 230 V (120 VAC / 230 VAC) bereitgestellt, wobei hier schematisch die Anschlüsse L und N gezeigt sind. Die Wechselspannung wird von einem Netzgleichrichter 3 gleichgerichtet, der einen herkömmlichen Aufbau aufweist. Zur Stabilisierung der gleichgerichteten Spannung ist ein Kondensator 4 als Puffer vorgesehen und parallel zu den gleichstromseitigen Anschlüssen des Netzgleichrichters 3 geschaltet.To generate the rectified mains voltage, this is first provided as a conventional AC voltage with 120 V or 230 V (120 VAC / 230 VAC), wherein here the connections L and N are shown schematically. The AC voltage is rectified by a mains rectifier 3, which has a conventional construction. To stabilize the rectified voltage, a capacitor 4 is provided as a buffer and connected in parallel with the DC-side terminals of the mains rectifier 3.
In einem auf den Kondensator 4 folgenden Schaltungsteil 5 erfolgen eine Netzstrommessung und eine Netzspannungsmessung, wobei der Schaltungsteil 5 mit einem Schaltregler 6 elektrisch verbunden ist und die Messwerte an den Schaltregler 6 zum Auswerten und weiteren Verarbeiten übertragbar sind. Der Schaltregler 6 kann als Mikroprozessor ausgebildet sein. Des Weiteren umfasst die Schaltungsanordnung eine Treiberschaltung 7, einen Schaltungsteil 8 und einen Spannungsmesswandler 9, welche neben dem Schaltregler 6 einem Multiphasenspannungsregler zugeordnet sind.In a
Der Schaltregler 6 kann darüber hinaus über eine Kommunikationsschnittstelle (nicht dargestellt), über welche Sollwerte und Istwerte verschiedener Parameter, insbesondere des Peltier-Moduls 1, übertragbar sind, mit einer Steuer- und Kontrolleinheit (nicht dargestellt) des Hausgeräts elektrisch verbunden sein.In addition, the
Am Peltier-Modul 1 ist ein Temperatursensor 10, vorliegend ein PTC-Widerstand, angeordnet. Abhängig von den von diesem Temperatursensor 10 detektierten Messwerten kann ein wechselstromseitiger Schalter 14 mittels einem Relaisansteuerkreis 12 betätigt werden, wodurch abhängig von der Schalterstellung das gesamte Peltier-Modul 1 ausgeschaltet wird.At the Peltier module 1, a
Des Weiteren ist am Peltier-Modul 1 ein NTC-Widerstand 11 angeordnet, welcher ebenfalls zur Temperaturermittlung ausgebildet ist und die detektierten Messwerte an den Schaltregler 6 überträgt.Furthermore, an
Soll nun in dem Wäschetrockner ein Trocknungsprozess durchgeführt werden und Wäschestücke, welche in einen Behälter des Wäschetrockners eingebracht sind, getrocknet werden, so wird im Ausführungsbeispiel zunächst eine erste Betriebsphase des Wäschetrockners eingestellt, wobei in dieser ersten Betriebsphase das Peltier-Modul 1 einer Wärmepumpe des Wäschetrockners mit Energie versorgt wird. Dazu ist das Peltier-Modul 1 mit der gleichgerichteten Netzspannung verbunden, wobei dazu die Transistoren 8a und 8b entsprechend geschaltet sind. Zum Ermitteln charakteristischer Parameter und Größen für den Trocknungsprozess der Wäschestücke wird nachfolgend zu vorgebbaren Phasen des Trocknungsprozesses eine zweite Betriebsphase eingestellt, wobei dazu das Peltier-Modul 1 von der Energieversorgung getrennt wird, indem die Transistoren 8a und 8b entsprechend geschaltet werden. In dieser zweiten Betriebsphase werden die Temperaturen einer Kaltseite und einer Warmseite des Peltier-Moduls 1 bestimmt. Dazu wird die nach der Trennung von der Energieversorgung vom Peltier-Modul 1 erzeugte Thermospannung gemessen, aus welcher die Temperaturdifferenz zwischen der Kaltseite und der Warmseite des Peltier-Moduls 1 in dem Schaltregler 6 ermittelt wird. Des Weiteren wird über den NTC-Widerstand 11 eine örtliche Temperatur des Peltier-Moduls 1 bestimmt, welche insbesondere die Temperatur der Warmseite oder eine mittlere Temperatur des Peltier-Moduls 1 darstellt.If a drying process is now to be carried out in the tumble dryer and items of laundry which are introduced into a container of the tumble dryer are dried, a first operating phase of the tumble dryer is initially set in the exemplary embodiment, in which case the Peltier module 1 of a heat pump of the tumble dryer is energized. For this purpose, the Peltier module 1 is connected to the rectified mains voltage, to which the
Aus der bestimmten Temperaturdifferenz und der örtlichen Temperatur des Peltier-Moduls 1 kann dann die Temperatur der Kaltseite des Peltier-Moduls 1 sowie, falls noch nicht vorliegend, der Warmseite des Peltier-Moduls 1, berechnet werden.From the determined temperature difference and the local temperature of the Peltier module 1 can then be the temperature of the cold side of the Peltier module 1 and, if not present, the warm side of the Peltier module 1, calculated.
Nachdem diese Temperaturen ermittelt sind, wird das Peltier-Modul 1 wieder mit der Energieversorgung verbunden, indem die Transistoren 8a und 8b entsprechend geschaltet werden und dadurch wieder die erste Betriebsphase des Wäschetrockners und des Peltier-Moduls 1 eingestellt wird. In dieser wieder eingestellten ersten Betriebsphase wird dann die Leistungsaufnahme des Peltier-Moduls 1 nach dem Verbinden von diesem mit der Energieversorgung bis zum Einstellen eines Soll-Arbeitspunkts des Peltier-Moduls 1 gemessen. Mit den Informationen über die gemessene Leistungsaufnahme und die gemessenen und ermittelten Temperaturen an der Warmseite und der Kaltseite des Peltier-Moduls 1 kann in dem Schaltregler 6 eine während des bisher fortgeschrittenen Trocknungsprozesses bereits aus den Wäschestücken auskondensierte Feuchte bestimmt werden. In dem Schaltregler 6 sind dazu Kennlinien und/oder Berechnungsmodelle abgelegt, welche eine Ermittlung dieser auskondensierten Feuchte ermöglichen. Aus dieser auskondensierten Feuchte kann dann ebenfalls in dem Schaltregler 6 die in den Wäschestücken noch verbliebene Feuchte bestimmt werden. Des Weiteren sind in diesem Schaltregler 6 Referenz-Feuchten in Abhängigkeit von der momentanen Phase eines Trocknungsprozesses abgelegt. Die ermittelte verbliebene Feuchte in den Wäschestücke wird dann mit der Referenz-Feuchte verglichen, wobei die Referenz-Feuchte die in den Wäschestücken verbliebene Feuchte charakterisiert, welche zu dem momentanen Zeitpunkt der erreichten Phase des Trocknungsprozesses erreicht sein sollte. Abhängig von dem Vergleich wird der weitere Trocknungsprozess gesteuert.After these temperatures have been determined, the Peltier module 1 is again connected to the power supply by the
Das Peltier-Modul 1 umfasst vorliegend vier Peltier-Gruppen 1 a, 1 b, 1 c und 1 d, von denen jede mehrere Peltier-Elemente, vorliegend jeweils drei Peltier-Elemente 2, aufweist. Die Peltier-Gruppen 1a bis 1d sind als separate Komponenten ausgebildet und mit einem Multiphasenspannungsregler, welcher den Schaltregler 6, die Treiberschaltung 7, den Schaltungsteil 8 mit den Schalttransistoren 8a und 8b, sowie den Spannungsmesswandler 9 umfasst. Grundsätzlich kann jede Peltier-Gruppe 1 a, 1b, 1 c und 1d nur ein einziges Peltier-Element umfassen; es dient allerdings einer wünschenswerten Einfachheit der Schaltungsanordnung, jeweils mehrere Peltier-Elemente in einer Peltier-Gruppe zusammenzufassen. Dabei ist es von besonderem Vorteil, jeweils solche Peltier-Elemente zusammenzufassen, die in dem Peltier-Modul 1 unter weitgehend gleichen Bedingungen betrieben werden.In the present case, the Peltier module 1 comprises four
Jede der Peltier-Gruppen 1a bis 1d ist dabei separat durch den Multiphasenspannungsregler mit einer entsprechenden Spannung versorgbar. Dazu können die Transistoren 8a und/oder 8b entsprechend angesteuert werden, wodurch eine angelegte und gleichgerichtete Netzspannung an die separaten Peltier-Gruppen 1 a bis 1d übertragen wird.Each of the Peltier groups 1a to 1d can be supplied separately by the multi-phase voltage regulator with a corresponding voltage. For this purpose, the
Im Ausführungsbeispiel gemäß jeder Figur enthält der Multiphasenspannungsregler nur einen Schaltregler 6, eine Treiberschaltung 7, und einen Schaltungsteil 8 mit Schalttransistoren 8a und 8b, um die Ausgangsleistung des Multiphasenspannungsreglers und somit die Leistungsaufnahmen der Peltier-Gruppen 1 a bis 1d gemäß der jeweiligen Erfordernisse des Betriebsprozesses einzustellen. Zusätzlich ist nur ein Transformator 13 mit einer Primärwicklung 13a und Sekundärwicklungen 13 b vorhanden. Von den Sekundärwicklungen 13b führen Anschlüsse mit Gleichrichteranordnungen zu den Peltier-Gruppen 1a bis 1 d, um diese unabhängig voneinander, also mit individuell vorgegebenen bzw. eingestellten Werten mit Elektrizität zu versorgen.In the embodiment according to each figure, the multi-phase voltage regulator includes only a
Gemäß
Gemäß
In jedem Falle ist in den Schaltungsanordnun gen nach
Die Schaltungsanordnungen gemäß
Das Hausgerät kann auch als Geschirrspüler ausgebildet sein, welcher eine Wärmepumpe und eine soeben beschriebene Schaltungsanordnung aufweist.The domestic appliance can also be designed as a dishwasher, which has a heat pump and a circuit arrangement just described.
Claims (6)
- Circuit arrangement for operating a Peltier module (1) of a heat pump of a domestic appliance, which is constructed for, in particular, treatment of articles of laundry, comprising a plurality of Peltier elements (2), wherein the Peltier module (1) comprises at least two Peltier groups (1 a, 1 b, 1 c, 1 d), each of which comprises at least one Peltier element (2), characterised in that a multi-phase voltage regulator (6, 7, 8, 9) electrically connected with the Peltier groups (1 a, 1 b, 1 c, 1 d) is arranged and is constructed for separate voltage regulation of the individual Peltier groups (1 a, 1 b, 1 c, 1 d).
- Circuit arrangement according to claim 1, in which the operating voltage of the Peltier module (1) is a direct voltage of less than 120 V, particularly less than 70 V, particularly approximately 60 V.
- Circuit arrangement according to one of the preceding claims, comprising first means (6, 7, 8, 9) by which in a first operating phase of the Peltier module (1) at least one first operating parameter of the Peltier module (1) is detectable, second means (10, 11, 6, 9) by which in a second operating phase of the Peltier module (1) at least one second operating parameter of the Peltier module (1) is detectable and a switching regulator (6) by which degrees of moisture of the articles introduced into and to be dried in the domestic appliance, particularly laundry articles, are ascertainable from the detected operating parameters and the further operating process is settable in dependence thereon.
- Method of operating a Peltier module (1) of a heat pump of a domestic appliance, which is constructed for, in particular, treatment of articles of laundry, comprising a plurality of Peltier elements (2), wherein the Peltier module (1) is divided at least into two Peltier groups (1 a, 1 b, 1 c, 1 d), each of which comprises at least one Peltier element (2), wherein the respective Peltier groups (1 a, 1 b, 1 c, 1 d) are separately supplied with voltage by a multi-phase voltage regulator (6, 7, 8, 9).
- Method according to claim 4, in which the Peltier module (1) is supplied with a direct voltage of less than 120 V, particularly less than 70 V, particularly approximately 60 V.
- Method according to one of claims 4 and 5, in which in a first operating phase of a Peltier module (1) of a heat pump of the domestic appliance at least one first operating parameter of the Peltier module (1)is detected and in a second operating phase at least one second operating parameter of the Peltier module (1) is detected, wherein degrees of moisture of articles to be dried in the domestic appliance, particularly laundry articles, are determined in dependence on these detected operating parameters and the further operating process is set in dependence thereon.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL07728217T PL2024553T3 (en) | 2006-05-18 | 2007-04-18 | Circuit arrangement and method for operating a peltier module on a heat pump in a domestic appliance |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006023451A DE102006023451A1 (en) | 2006-05-18 | 2006-05-18 | Circuit arrangement and method for operating a Peltier module of a heat pump of a domestic appliance |
PCT/EP2007/053755 WO2007134924A1 (en) | 2006-05-18 | 2007-04-18 | Circuit arrangement and method for operating a peltier module on a heat pump in a domestic appliance |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2024553A1 EP2024553A1 (en) | 2009-02-18 |
EP2024553B1 true EP2024553B1 (en) | 2013-08-21 |
Family
ID=38279236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07728217.6A Not-in-force EP2024553B1 (en) | 2006-05-18 | 2007-04-18 | Circuit arrangement and method for operating a peltier module on a heat pump in a domestic appliance |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2024553B1 (en) |
DE (1) | DE102006023451A1 (en) |
PL (1) | PL2024553T3 (en) |
WO (1) | WO2007134924A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013098006A1 (en) | 2011-12-26 | 2013-07-04 | Arcelik Anonim Sirketi | Peltier element control circuit for household appliances |
WO2013098014A2 (en) | 2011-12-26 | 2013-07-04 | Arcelik Anonim Sirketi | Peltier element control circuit for household appliances |
GB2540344A (en) * | 2015-07-06 | 2017-01-18 | Evontix Ltd | Control system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3036383A (en) * | 1958-08-26 | 1962-05-29 | Philco Corp | Drying apparatus |
DE1410206A1 (en) * | 1959-09-21 | 1968-10-10 | Siemens Elektrogeraete Gmbh | Washing machine |
FR1262399A (en) * | 1960-07-13 | 1961-05-26 | Thomson Houston Comp Francaise | Laundry drying machine improvements |
DE4101644A1 (en) * | 1991-01-22 | 1992-07-23 | Wolfgang Dipl Phys Grothe | Heat pump system using Peltier elements supplied with current - has unit supplying medium to be cooled to cold side of Peltier elements and unit removing heated medium at hot side |
DE4242841C2 (en) * | 1992-12-17 | 1995-05-11 | Litef Gmbh | Method and control device for temperature control for a Peltier-operated temperature control device |
JPH0857194A (en) * | 1994-08-26 | 1996-03-05 | Matsushita Electric Ind Co Ltd | Dehumidifying type electric clothing-drying machine |
US6266962B1 (en) * | 1999-10-07 | 2001-07-31 | International Business Machines Corporation | Highly reliable thermoelectric cooling apparatus and method |
DE10141083B4 (en) * | 2001-08-22 | 2006-02-16 | Siemens Ag | Method and arrangement for temperature control of a Peltier element |
DE10334796A1 (en) * | 2003-07-30 | 2005-02-24 | BSH Bosch und Siemens Hausgeräte GmbH | Method for operating a device with at least one partial program step "drying" |
-
2006
- 2006-05-18 DE DE102006023451A patent/DE102006023451A1/en not_active Withdrawn
-
2007
- 2007-04-18 EP EP07728217.6A patent/EP2024553B1/en not_active Not-in-force
- 2007-04-18 PL PL07728217T patent/PL2024553T3/en unknown
- 2007-04-18 WO PCT/EP2007/053755 patent/WO2007134924A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2007134924A1 (en) | 2007-11-29 |
DE102006023451A1 (en) | 2007-11-22 |
PL2024553T3 (en) | 2014-01-31 |
EP2024553A1 (en) | 2009-02-18 |
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