WO2010106013A2 - Method for operating a peltier element - Google Patents

Method for operating a peltier element Download PDF

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Publication number
WO2010106013A2
WO2010106013A2 PCT/EP2010/053281 EP2010053281W WO2010106013A2 WO 2010106013 A2 WO2010106013 A2 WO 2010106013A2 EP 2010053281 W EP2010053281 W EP 2010053281W WO 2010106013 A2 WO2010106013 A2 WO 2010106013A2
Authority
WO
WIPO (PCT)
Prior art keywords
peltier element
operating
pulsed
peltier
electrical energy
Prior art date
Application number
PCT/EP2010/053281
Other languages
German (de)
French (fr)
Other versions
WO2010106013A3 (en
Inventor
Urs Weidmann
Original Assignee
Lycoming Management, Inc.
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 Lycoming Management, Inc. filed Critical Lycoming Management, Inc.
Publication of WO2010106013A2 publication Critical patent/WO2010106013A2/en
Publication of WO2010106013A3 publication Critical patent/WO2010106013A3/en

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
    • 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 for operating a Peltier element.
  • a Peltier element is an electrothermal transducer which generates a temperature difference based on the Peltier effect at current flow.
  • a common abbreviation for Peltier elements and Peltier coolers is TEC (English: thermoelectric cooler).
  • the inverse of the Peltier effect is the Seebeck effect.
  • Peltier elements have various advantages, such as no mechanical moving parts or gases or liquids, no refrigerant and by reversing the direction of both cooling and heating is possible.
  • a disadvantage, however, is the low efficiency.
  • the invention is based, to increase the efficiency of a Peltier element the task.
  • the object When operating a Peltier element as an electrothermal converter, the object is achieved according to the invention by a method in which the Peltier element is acted upon by pulsed electrical energy.
  • the Peltier element is preferably supplied with a rectangular direct current.
  • the object When operating a Peltier element as a thermoelectric generator, the object is achieved according to the invention by a method in which the electrical energy is extracted in pulsed form.
  • Fig. 1 shows schematically a Peltier element and an electrical energy source for operating the Peltier element as an electrothermal transducer
  • Fig. 2 shows a current diagram
  • Fig. 3 shows schematically a Peltier element and an electronic circuit for operating the Peltier element as a thermoelectric generator.
  • Fig. 1 shows schematically a Peltier element 1 and an electrical energy source 2, the are connected to each other in a circuit 3. The direction of the current flowing in the circuit is indicated by arrows.
  • the invention proposes to use and operate the Peltier element 1 as an electrothermal transducer, i. as a cooling element and / or heating element to make the supply of electrical energy pulsed, instead of supplying a direct current as usual.
  • the energy source 2 is therefore set up to apply a pulsed direct current to the Peltier element 1.
  • the pulsed direct current is preferably rectangular with steep edges as possible.
  • FIG. 2 shows such a pulsed rectangular DC current I (t) as a function of time t.
  • the optimal duty cycle i. the ratio ⁇ / T of pulse duration ⁇ to period T is dependent on the materials used for the Peltier element 1.
  • the invention can be, as shown in Fig. 3, vice versa also apply when the Peltier element 1 is used as a thermoelectric generator to from the prevailing between the two sides of the Peltier element 1 temperature difference according to the Seebeck effect an electric current to create.
  • the electrical energy is extracted in pulsed form, for example by means of a corresponding electronic circuit 4. Again, the energy is preferably removed by means of rectangular pulses.

Abstract

The invention relates to a Peltier element (1) being loaded by pulsed electrical energy. The pulsed supply of energy is carried out preferably by supplying a rectangular-shaped direct current.

Description

Verfahren zum Betrieb eines Peltierelements Method for operating a Peltier element
Technisches GebietTechnical area
[0001] Die Erfindung betrifft ein Verfahren zum Betrieb eines Peltierelements.The invention relates to a method for operating a Peltier element.
Hintergrund der ErfindungBackground of the invention
[0002] Ein Peltierelement ist ein elektrothermischer Wandler, welcher basierend auf dem Peltier-Effekt bei Stromdurchfluss eine Temperaturdifferenz erzeugt. Eine übliche Abkürzung für Peltier-Elemente und Peltier-Kühler ist TEC (engl, thermoelectric cooler).A Peltier element is an electrothermal transducer which generates a temperature difference based on the Peltier effect at current flow. A common abbreviation for Peltier elements and Peltier coolers is TEC (English: thermoelectric cooler).
[0003] Die Umkehrung des Peltier-Effekts ist der Seebeck-Effekt. So ist es möglich, durch Herstellen einer Temperaturdifferenz zwischen den beiden Seiten eines Peltierelements elektrischen Strom zu erzeugen.The inverse of the Peltier effect is the Seebeck effect. Thus, it is possible to generate electric current by establishing a temperature difference between the two sides of a Peltier element.
[0004] Peltierelemente haben verschiedene Vorteile, wie keine mechanisch bewegten Teile oder Gase oder Flüssigkeiten, kein Kältemittel und durch Umkehrung der Stromrichtung ist sowohl Kühlen als auch Heizen möglich. Ein Nachteil hingegen ist der geringe Wirkungsgrad.Peltier elements have various advantages, such as no mechanical moving parts or gases or liquids, no refrigerant and by reversing the direction of both cooling and heating is possible. A disadvantage, however, is the low efficiency.
Kurze Beschreibung der ErfindungBrief description of the invention
[0005] Der Erfindung liegt die Aufgabe zugrunde, den Wirkungsgrad eines Peltierelements zu erhöhen.The invention is based, to increase the efficiency of a Peltier element the task.
[0006] Beim Betrieb eines Peltierelements als elektrothermischer Wandler wird die Aufgabe erfindungsgemäss gelöst durch ein Verfahren, bei dem das Peltierelement mit gepulster elektrischer Energie beaufschlagt wird. Dabei wird dem Peltierelement bevorzugt ein rechteckförmiger Gleichstrom zugeführt. Beim Betrieb eines Peltierelements als thermoelektrischer Generator wird die Aufgabe erfindungsgemäss gelöst durch ein Verfahren, bei dem die elektrische Energie in gepulster Form entzogen wird.When operating a Peltier element as an electrothermal converter, the object is achieved according to the invention by a method in which the Peltier element is acted upon by pulsed electrical energy. In this case, the Peltier element is preferably supplied with a rectangular direct current. When operating a Peltier element as a thermoelectric generator, the object is achieved according to the invention by a method in which the electrical energy is extracted in pulsed form.
[0007] Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels und anhand der Zeichnung näher erläutert.The invention will be explained in more detail with reference to an embodiment and with reference to the drawing.
Beschreibung der FigurenDescription of the figures
Fig. 1 zeigt schematisch ein Peltierelement und eine elektrische Energiequelle zum Betrieb des Peltierelements als elektrothermischer Wandler, Fig. 2 zeigt ein Stromdiagramm, undFig. 1 shows schematically a Peltier element and an electrical energy source for operating the Peltier element as an electrothermal transducer, Fig. 2 shows a current diagram, and
Fig. 3 zeigt schematisch ein Peltierelement und eine elektronische Schaltung zum Betrieb des Peltierelements als thermoelektrischer Generator.Fig. 3 shows schematically a Peltier element and an electronic circuit for operating the Peltier element as a thermoelectric generator.
Detaillierte Beschreibung der ErfindungDetailed description of the invention
[0008] Die Fig. 1 zeigt schematisch ein Peltierelement 1 und eine elektrische Energiequelle 2, die miteinander in einem Stromkreis 3 verbunden sind. Die Richtung des im Stromkreis fliessenden Stroms ist durch Pfeile dargestellt.Fig. 1 shows schematically a Peltier element 1 and an electrical energy source 2, the are connected to each other in a circuit 3. The direction of the current flowing in the circuit is indicated by arrows.
[0009] Die Erfindung schlägt vor, beim Einsatz und Betrieb des Peltierelements 1 als elektrothermischer Wandler, d.h. als Kühlelement und/oder Heizelement, die Zufuhr der elektrischen Energie gepulst vorzunehmen, statt wie üblich einen Gleichstrom zuzuführen. Die Energiequelle 2 ist deshalb eingerichtet, das Peltierelement 1 mit einem gepulsten Gleichstrom zu beaufschlagen.The invention proposes to use and operate the Peltier element 1 as an electrothermal transducer, i. as a cooling element and / or heating element to make the supply of electrical energy pulsed, instead of supplying a direct current as usual. The energy source 2 is therefore set up to apply a pulsed direct current to the Peltier element 1.
[0010] Der gepulste Gleichstrom ist vorzugsweise rechteckförmig mit möglichst steilen Flanken. Die Fig. 2 zeigt einen solchen gepulsten, rechteckförmigen Gleichstrom I(t) in Funktion der Zeit t. Das optimale Tastverhältnis (engl.: duty cycle), d.h. das Verhältnis τ/T von Impulsdauer τ zu Periodendauer T ist abhängig von den für das Peltierelement 1 verwendeten Materialien.The pulsed direct current is preferably rectangular with steep edges as possible. FIG. 2 shows such a pulsed rectangular DC current I (t) as a function of time t. The optimal duty cycle, i. the ratio τ / T of pulse duration τ to period T is dependent on the materials used for the Peltier element 1.
[0011] Die Erfindung lässt sich, wie in der Fig. 3 gezeigt, umgekehrt auch anwenden, wenn das Peltierelement 1 als thermoelektrischer Generator benützt wird, um aus der zwischen den beiden Seiten des Peltierelements 1 herrschenden Temperaturdifferenz gemäss dem Seebeck-Effekt einen elektrischen Strom zu erzeugen. In diesem Fall wird die elektrische Energie in gepulster Form entzogen, beispielsweise mittels einer entsprechenden elektronischen Schaltung 4. Auch hier wird die Energie vorzugsweise mittels rechteckförmigen Pulsen entzogen. The invention can be, as shown in Fig. 3, vice versa also apply when the Peltier element 1 is used as a thermoelectric generator to from the prevailing between the two sides of the Peltier element 1 temperature difference according to the Seebeck effect an electric current to create. In this case, the electrical energy is extracted in pulsed form, for example by means of a corresponding electronic circuit 4. Again, the energy is preferably removed by means of rectangular pulses.

Claims

PATENTANSPRÜCHE
1. Verfahren zum Betrieb eines Peltierelements (1) als elektrothermischer Wandler, dadurch gekennzeichnet, dass das Peltierelement (1) mit gepulster elektrischer Energie beaufschlagt wird.1. A method for operating a Peltier element (1) as an electrothermal transducer, characterized in that the Peltier element (1) is acted upon by pulsed electrical energy.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass dem Peltierelement (1) ein rechteckförmiger Gleichstrom zugeführt wird.2. The method according to claim 1, characterized in that the Peltier element (1) is fed a rectangular DC current.
3. Verfahren zum Betrieb eines Peltierelements (1) als thermoelektrischer Generator, dadurch gekennzeichnet, dass die elektrische Energie in gepulster Form entzogen wird. 3. A method for operating a Peltier element (1) as a thermoelectric generator, characterized in that the electrical energy is extracted in pulsed form.
PCT/EP2010/053281 2009-03-20 2010-03-15 Method for operating a peltier element WO2010106013A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00444/09 2009-03-20
CH4442009 2009-03-20

Publications (2)

Publication Number Publication Date
WO2010106013A2 true WO2010106013A2 (en) 2010-09-23
WO2010106013A3 WO2010106013A3 (en) 2011-03-03

Family

ID=42740050

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/053281 WO2010106013A2 (en) 2009-03-20 2010-03-15 Method for operating a peltier element

Country Status (1)

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WO (1) WO2010106013A2 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4463214A (en) * 1982-03-16 1984-07-31 Atlantic Richfield Company Thermoelectric generator apparatus and operation method
EP0369670A3 (en) * 1988-11-18 1992-06-03 Aspden, Harold Dr. Thermoelectric energy conversion
US5371665A (en) * 1994-03-14 1994-12-06 Quisenberry; Tony M. Power control circuit for improved power application and temperature control of thermoelectric coolers and method for controlling thereof
JPWO2006067838A1 (en) * 2004-12-21 2008-06-12 株式会社アドバンテスト Peltier element driving method and circuit, Peltier module mounting structure, and electronic component handling apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Publication number Publication date
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