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EP0736639A1 - Dewatering device for masonry - Google Patents

Dewatering device for masonry Download PDF

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Publication number
EP0736639A1
EP0736639A1 EP96103451A EP96103451A EP0736639A1 EP 0736639 A1 EP0736639 A1 EP 0736639A1 EP 96103451 A EP96103451 A EP 96103451A EP 96103451 A EP96103451 A EP 96103451A EP 0736639 A1 EP0736639 A1 EP 0736639A1
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EP
European Patent Office
Prior art keywords
frequency
coil
oscillator
voltage
signal
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EP96103451A
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German (de)
French (fr)
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EP0736639B1 (en
Inventor
Hildegard Berger
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Individual
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Individual
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Priority claimed from DE29511719U external-priority patent/DE29511719U1/en
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Priority to SI9630369T priority Critical patent/SI0736639T1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/70—Drying or keeping dry, e.g. by air vents
    • E04B1/7007—Drying or keeping dry, e.g. by air vents by using electricity, e.g. electro-osmosis
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/46—Dielectric heating
    • H05B6/48—Circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/46—Dielectric heating
    • H05B6/62—Apparatus for specific applications

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • Such a device is known from European patent application 0 395 085 A1.
  • a high-frequency oscillation in the range of approximately 141 kHz plus / minus 4 kHz is generated by excitation of a resonator comprising a coil and a capacitor by a low-frequency pulse train signal, so that after each excitation of the resonator by a pulse train signal, a high-frequency, damped oscillation occurs whose amplitude drops to a value below 10% of the maximum amplitude of the oscillation during the duration of half a period of the pulse sequence signal.
  • the electromagnetic waves emitted by the coil act on the masonry without contact and dehumidify it.
  • the frequency of the high-frequency waves emitted by the coil of approx. 141 kHz from the parameters the coil and the capacitor in the resonator excited by a pulse to oscillate at the natural frequency are adjusted.
  • the design of the capacitor as a variable capacitor is proposed.
  • such an adjustment is relatively difficult since the fundamental frequency of a damped oscillation can only be measured with sufficient precision with a relatively high outlay.
  • the most exact setting possible is necessary since a good approximation to 141 KHz requires a significant optimization of the dehumidification effect.
  • the resonance frequency of the resonant circuit is not satisfactorily constant due to the influence of the air coil.
  • the device according to the invention enables the generation of alternating electromagnetic fields with a very precisely definable frequency. Influences on the high frequency of the alternating field or, in particular, in the case of sequences of wave trains which are damped in each case with an envelope curve, changes in the curve shape due to environmental influences in the region of the coil, such as electrically conductive metal parts, are significantly reduced when the device is designed in accordance with the invention. It is not necessary to adjust the device during commissioning.
  • the device according to the invention can be implemented with simple and inexpensive means. In particular due to the frequency-stable structure, it can be trained with good EMC (electromagnetic) compatibility.
  • the device can preferably be supplied with its supply voltage via an EMC-compatible standard power supply unit, since the entire device can be designed to be relatively easily EMC-compatible.
  • a frequency-stable oscillator is preferably used as the oscillator in order to avoid fluctuations in the frequency of the emitted electromagnetic fields.
  • a frequency divider which in turn is connected on the output side to a phase comparison for controlling the voltage-controlled oscillator is.
  • single or multiple mains voltage frequency is used as the reference frequency of the oscillator in order to achieve the simplest possible structure.
  • the coil is expediently designed as an air coil, since the permeability of air thus results in a suitable coil size when the coil is designed to emit high-frequency electromagnetic fields.
  • a modulator connected downstream of the oscillator is advantageous, by means of which sequences of wave trains each having an envelope curve of lower frequency than the high-frequency vibrations can be generated, since it has been shown that a combination of the high-frequency electromagnetic vibrations with low-frequency Vibrations, for example in the range of the fluctuation frequency of the earth's magnetic field from 7 to 15 Hz or the like have a positive influence on the dehumidification of the masonry.
  • the envelope can expediently be generated by a differentiator connected on the input side to low-frequency square-wave AC voltage, in particular consisting of a capacitor and a resistor, which results in a very simple construction.
  • the air coil can also be subjected to a low-frequency voltage in order to generate an alternating electromagnetic field with a high-frequency and low-frequency component.
  • FIG. 1 shows an electronic circuit for generating a high-frequency voltage U, which is applied to a coil L, which generates an alternating electromagnetic field E, which acts on a wall 1 which is distanced from the coil L and which is thereby dehumidified.
  • the circuit is acted upon by a power supply 2 with a supply voltage and with a low-frequency signal S1, which serves as a reference signal for the phase comparison 3.
  • VCO voltage-controll-oscillator
  • the VCO generates an extremely frequency-stable output signal S3 with preferably 141 kHz as precise as possible.
  • This high-frequency signal S3 is applied to the coil L, which generates a corresponding alternating electromagnetic field.
  • the signal S3 is forwarded to a frequency divider 4, which converts the high-frequency signal into a low-frequency signal S4, for example by means of a digital counter circuit with a frequency division factor.
  • the high-frequency signal S3 of 141 kHz with a frequency division factor of 1/1410 achieved by connecting a digital counter produces a low-frequency signal S4.
  • the phase comparison 3 is carried out with this signal S4 and the signal S1, which also has 100 Hz here, and the result of the phase comparison is used as signal S3 to control the VCO 6.
  • the oscillator 5 thus comprises a phase comparison 3, a VCO 6 and, moreover, a frequency divider 4 for generating a signal of the same frequency as the reference frequency.
  • the phase comparison and VCO components of the oscillator can be implemented on a standard module, for example.
  • FIG. 2 shows a further exemplary embodiment of the invention, which, in accordance with FIG. 1, comprises a power supply unit 2 and an oscillator 5 with a phase comparison 3, a frequency divider 4 and a VCO 6.
  • the signal S3 high-frequency at 141 kHz is modulated in a modulation unit connected downstream of the oscillator.
  • This creates sequences of wave trains, each with an envelope curve lower in frequency than the high-frequency signal S3.
  • the signal S4 which is approximately rectangular here, slides over a differentiator, here inform of an RC element, so that the signal S5 inform is generated by individual pulses which decrease exponentially here.
  • This signal S5 is used to modulate the high-frequency signal S3 in the modulator 7, so that a signal S6 is obtained which has high-frequency oscillations with envelopes informing the exponentially decaying individual pulses S5.
  • This signal S6 is applied to the coil L.
  • the modulation of the high-frequency signal with sequences of exponentially falling single-wave trains results in an Better electromagnetic compatibility compared to the high-frequency continuous signal.
  • the air coil L can additionally be supplied with a low-frequency signal, in this case a signal of 50 Hz generated by a frequency divider 8, via a switch 10.
  • the invention allows the very efficient dehumidification of masonry, in particular because of the high frequency stability achieved due to the use of an oscillator with a good efficiency.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Architecture (AREA)
  • Electrochemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Drying Of Gases (AREA)
  • Drying Of Solid Materials (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

Moisture is driven from the wall (1) by the field radiated at preferably the most effective frequency of 141 kHz from a coil (L) driven by the VCO (6). A mains power unit (2) delivers also a low-frequency signal (S1) serving as a reference for the phase comparison (3) of the output (S4) from a 1410:1 frequency divider (4). A variant embodiment with better electromagnetic compatibility incorporates a pulse modulator applying a sequence of exponentially decaying pulses, and a switched frequency divider supplying an additional signal at 50 Hz.

Description

Die Erfindung betrifft eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device according to the preamble of claim 1.

Eine derartige Vorrichtung ist aus der europäischen Patentanmeldung 0 395 085 A1 bekannt. Bei dieser bekannten Vorrichtung wird eine hochfrequente Schwingung im Bereich von etwa 141 KHz plus/minus 4 KHz durch Anregung eines eine Spule und einen Kondensator umfassenden Resonators durch ein niederfrequentes Impulsfolgesignal erzeugt, sodaß nach jeder Anregung des Resonators durch ein Impulsfolgesignal eine hochfrequente, gedämpfte Schwingung auftritt, deren Amplitude während der Dauer einer halben Periode des Impulsfolgesignals auf einen Wert unter 10% der Maximalamplitude der Schwingung abfällt. Die von der Spule emmitierten, elektromagnetischen Wellen wirken berührungsfrei auf ein Mauerwerk ein und bewirken dessen Entfeuchtung.Such a device is known from European patent application 0 395 085 A1. In this known device, a high-frequency oscillation in the range of approximately 141 kHz plus / minus 4 kHz is generated by excitation of a resonator comprising a coil and a capacitor by a low-frequency pulse train signal, so that after each excitation of the resonator by a pulse train signal, a high-frequency, damped oscillation occurs whose amplitude drops to a value below 10% of the maximum amplitude of the oscillation during the duration of half a period of the pulse sequence signal. The electromagnetic waves emitted by the coil act on the masonry without contact and dehumidify it.

Da hierbei die Frequenz der von der Spule emmitierten, hochfrequenten Wellen von ca. 141 KHz aus den Parametern der Spule und des Kondensators im durch einen Impuls zum Schwingen mit der Eigenfrequenz angeregten Resonator abhängen, ist deren Abgleich erforderlich. Hierzu wird die Ausbildung des Kondensators als Drehkondensator vorgeschlagen. Eine derartige Einstellung ist jedoch relativ schwierig, da die Grundfrequenz einer gedämpften Schwingung nur mit relativ hohem Aufwand ausreichend präzise meßbar ist. Eine möglichst genaue Einstellung ist jedoch erforderlich, da eine gute Annäherung an 141 KHz eine deutliche Optimierung der Entfeuchtungswirkung bedingt. Überdies ist die Resonanzfrequenz des Schwingkreises aufgrund von Beeinflussungen der Luftspule nicht in zufriedenstellendem Ausmaße konstant. Insbesondere Metallteile in der Umgebung der Luftspule, in wesentlich geringerem Ausmaß jedoch auch Änderungen von deren Induktivität aufgrund von Schwankungen des Luftdrucks oder der Luftfeuchtigkeit bedingen nicht unerhebliche Störungen des abgestrahlten elektromagnetischen Feldes. Auch die Steilheit der Dämpfung der Schwingung ist durch elektrisch leitfähige Teile im Bereich der Spule beeinflußbar.Since here the frequency of the high-frequency waves emitted by the coil of approx. 141 kHz from the parameters the coil and the capacitor in the resonator excited by a pulse to oscillate at the natural frequency, their adjustment is necessary. For this purpose, the design of the capacitor as a variable capacitor is proposed. However, such an adjustment is relatively difficult since the fundamental frequency of a damped oscillation can only be measured with sufficient precision with a relatively high outlay. However, the most exact setting possible is necessary since a good approximation to 141 KHz requires a significant optimization of the dehumidification effect. In addition, the resonance frequency of the resonant circuit is not satisfactorily constant due to the influence of the air coil. Metal parts in particular in the vicinity of the air coil, but to a much lesser extent changes in their inductance due to fluctuations in air pressure or air humidity cause not insignificant disturbances in the emitted electromagnetic field. The steepness of the damping of the vibration can also be influenced by electrically conductive parts in the area of the coil.

Hiervon ausgehend ist es daher die Aufgabe der vorliegenden Erfindung, eine unaufwendige und kostengünstige Vorrichtung zu schaffen, die möglichst einfach, zuverlässig und reproduzierbar für die Erzeugung von zur Entfeuchtung einer Mauer geeigneten elektromagnetischen Feldern einsetzbar ist. Diese Aufgabe wird durch das Kennzeichen des Anspruchs 1 gelöst.Proceeding from this, it is therefore the object of the present invention to provide an uncomplicated and inexpensive device which can be used as simply, reliably and reproducibly as possible for the generation of electromagnetic fields suitable for dehumidifying a wall. This object is achieved by the characterizing part of claim 1.

Die erfindungsgemäße Vorrichtung ermöglicht die Erzeugung von elektromagnetischen Wechselfeldern mit sehr präzise festlegbarer Frequenz. Beeinflussungen der Hochfrequenz des Wechselfeldes bzw. insbesondere bei gegebenenfalls jeweils mit einer Hüllkurve gedämpften Sequenzen von Wellenzügen Veränderungen der Kurvenform aufgrund von Umgebungseinflüssen im Bereich der Spule wie elektrisch leitenden Metallteilen, sind bei erfindungemäßer Ausbildung der Vorrichtung deutlich verringert. Ein Abgleich der Vorrichtung bei Inbetriebnahme ist nicht erforderlich. Überdies ist die erfindungsgemäße Vorrichtung mit einfachen und kostengünstigen Mitteln realisierbar. Insbesondere aufgrund des frequenzstabilen Aufbaus ist sie mit guter EMV-Verträglichkeit (elektromagnetische Verträglichkeit) ausbildbar.The device according to the invention enables the generation of alternating electromagnetic fields with a very precisely definable frequency. Influences on the high frequency of the alternating field or, in particular, in the case of sequences of wave trains which are damped in each case with an envelope curve, changes in the curve shape due to environmental influences in the region of the coil, such as electrically conductive metal parts, are significantly reduced when the device is designed in accordance with the invention. It is not necessary to adjust the device during commissioning. In addition, the device according to the invention can be implemented with simple and inexpensive means. In particular due to the frequency-stable structure, it can be trained with good EMC (electromagnetic) compatibility.

Besonders vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. So ist die Vorrichtung vorzugsweise über ein EMV-verträgliches Standardnetzgerät mit ihrer Versorgungsspannung beaufschlagbar, da so die gesamte Vorrichtung relativ einfach EMV-verträglich ausbildbar ist.Particularly advantageous embodiments of the invention result from the subclaims. For example, the device can preferably be supplied with its supply voltage via an EMC-compatible standard power supply unit, since the entire device can be designed to be relatively easily EMC-compatible.

Als Oszilator wird vorzugsweise ein frequenzstabiler Oszilator eingesetzt, um Schwankungen der Frequenz der abgestrahlten elektromagnetischen Felder zu vermeiden.A frequency-stable oscillator is preferably used as the oscillator in order to avoid fluctuations in the frequency of the emitted electromagnetic fields.

Zweckmäßig ist insbesondere eine Ausbildung des Oszilators mit einer phase-locked-loop (=PLL)-Schaltung, was eine zuverlässige, einfache und kostengünstige Realisierung erlaubt.It is particularly expedient to design the oscillator with a phase-locked loop (= PLL) circuit, which permits reliable, simple and inexpensive implementation.

Dabei umfaßt zweckmäßig die phase-locked-loop-Schaltung einen voltage-controlled-oscillator (=durch eine Spannung gesteuerter Oszilator =VCO) der ausgangsseitig an einen Frequenzteiler angeschlossen ist, welcher wiederum ausgangsseitig an einen Phasenvergleich zur Ansteuerung des voltage-controlled-oscillator angeschlossen ist. Zweckmäßig wird dabei als Referenzfrequenz des Oszilators einfache oder mehrfache Netzspannungsfrequenz verwendet, um einen möglichst einfachen Aufbau zu erzielen.The phase-locked-loop circuit expediently comprises a voltage-controlled oscillator (= oscillator controlled by a voltage = VCO) which is connected on the output side to a frequency divider which in turn is connected on the output side to a phase comparison for controlling the voltage-controlled oscillator is. Expediently, single or multiple mains voltage frequency is used as the reference frequency of the oscillator in order to achieve the simplest possible structure.

Die Spule ist zweckmäßig als Luftspule ausgebildet, da sich aufgrund der Permeabilität von Luft somit bei für die Abstrahlung hochfrequenter elektromagnetischer Felder geeignete Ausbildung der Spule eine geeignete Größe der Spule ergibt.The coil is expediently designed as an air coil, since the permeability of air thus results in a suitable coil size when the coil is designed to emit high-frequency electromagnetic fields.

Vorteilhaft ist ein dem Oszilator nachgeschaltete Modulator, durch den Sequenzen von Wellenzügen mit jeweils einer Hüllkurve niedrigerer Frequenz als die hochfrequenten Schwingungen erzeugbar sind, da sich gezeigt hat, daß eine Kombination der hochfrequenten elektromagnetischen Schwingungen mit niederfrequenten Schwingungen, beispielsweise im Bereich der Fluktuationsfrequenz des Erdmagnetfeldes von 7 bis 15 Hz oder dergleichen positiven Einfluß auf die Entfeuchtung des Mauerwerks haben. Zweckmäßig ist die Hüllkurve durch einen eingangsseitig an niederfrequente Rechteck-Wechselspannung angeschlossenen Differenzierer, insbesondere bestehend aus einem Kondensator und einem Widerstand erzeugbar, was einen sehr einfachen Aufbau ergibt.A modulator connected downstream of the oscillator is advantageous, by means of which sequences of wave trains each having an envelope curve of lower frequency than the high-frequency vibrations can be generated, since it has been shown that a combination of the high-frequency electromagnetic vibrations with low-frequency Vibrations, for example in the range of the fluctuation frequency of the earth's magnetic field from 7 to 15 Hz or the like have a positive influence on the dehumidification of the masonry. The envelope can expediently be generated by a differentiator connected on the input side to low-frequency square-wave AC voltage, in particular consisting of a capacitor and a resistor, which results in a very simple construction.

Ebenso kann es vorteilhaft sein, wenn die Luftspule zusätzlich mit einer niederfrequenten Spannung beaufschlagbar ist, um ein elektromagnetisches Wechselfeld mit hochfrequenter und niederfrequenter Komponente zu erzeugen.It can also be advantageous if the air coil can also be subjected to a low-frequency voltage in order to generate an alternating electromagnetic field with a high-frequency and low-frequency component.

Weitere Merkmale und Vorteile ergeben sich aus der Beschreibung eines Ausführungsbeispiels anhand, der zeichnung. Dabei zeigt:

Figur 1
ein Blockschaltbild eines Ausführungsbeispiels einer erfindungsgemäßen Vorrichtung zur Entfeuchtung von Mauerwerk und
Figur 2
ein weiteres Ausführungsbeispiel.
Further features and advantages result from the description of an exemplary embodiment with reference to the drawing. It shows:
Figure 1
a block diagram of an embodiment of an inventive device for dehumidifying masonry and
Figure 2
another embodiment.

Figur 1 zeigt eine elektronische Schaltung zur Erzeugung einer hochfrequenten Spannung U, die an einer Spule L anliegt, welche ein elektromagnetisches Wechselfeld E erzeugt, das auf eine von der Spule L distanzierte Wand 1 einwirkt, welche hierdurch entfeuchtet wird.FIG. 1 shows an electronic circuit for generating a high-frequency voltage U, which is applied to a coil L, which generates an alternating electromagnetic field E, which acts on a wall 1 which is distanced from the coil L and which is thereby dehumidified.

Die Schaltung wird von einem Netzgerät 2 mit Versorgungsspannung und mit einem niederfrequenten Signal S1 beaufschlagt, welche als Referenzsignal für den Phasenvergleich 3 dient. Der Phasenvergleich 3 steuert den voltage-controll-oscillator (=VCO) 6 über ein Steuersignal S2 an. Der VCO erzeugt ein äußerst frequenzstabiles Ausgangssignal S3 mit vorzugsweise möglichst präzise 141 KHz. Mit diesem hochfrequenten Signal S3 wird die Spule L beaufschlagt, die ein entsprechendes elektromagnetisches Wechselfeld erzeugt. Überdies wird das Signal S3 an einen Frequenzteiler 4 weitergeleitet, welcher das hochfrequente Signal beispielsweise durch eine digitale Zählschaltung mit einem Frequenzteilungsfaktor in ein niederfrequentes Signal S4 umwandelt. Hier wird mit dem hochfrequenten Signal S3 von 141 KHz bei einem durch die Beschaltung eines digitalen Zählers erzielten Frequenzteilungsfaktor von 1/1410 ein niederfrequentes Signal S4 erzeugt. Der Phasenvergleich 3 wird mit diesem Signal S4 und dem Signal S1 das hier ebenfalls 100 Hz aufweist, durchgeführt und das Ergebnis des Phasenvergleichs wird als Signal S3 zur Ansteuerung des VCO 6 eingesetzt. Bei der dargestellten Ausführungsform umfaßt der Oszilator 5 also einen Phasenvergleich 3, einen VCO 6 und überdies einen Frequenzteiler 4 zur Erzeugung eines Signals der gleichen Frequenz wie die Referenzfrequenz. Die Komponenten Phasenvergleich und VCO des Oszilators können beispielsweise auf einem Standard-Baustein realisiert sein.The circuit is acted upon by a power supply 2 with a supply voltage and with a low-frequency signal S1, which serves as a reference signal for the phase comparison 3. The phase comparison 3 controls the voltage-controll-oscillator (= VCO) 6 via a control signal S2. The VCO generates an extremely frequency-stable output signal S3 with preferably 141 kHz as precise as possible. This high-frequency signal S3 is applied to the coil L, which generates a corresponding alternating electromagnetic field. In addition, the signal S3 is forwarded to a frequency divider 4, which converts the high-frequency signal into a low-frequency signal S4, for example by means of a digital counter circuit with a frequency division factor. Here, the high-frequency signal S3 of 141 kHz with a frequency division factor of 1/1410 achieved by connecting a digital counter produces a low-frequency signal S4. The phase comparison 3 is carried out with this signal S4 and the signal S1, which also has 100 Hz here, and the result of the phase comparison is used as signal S3 to control the VCO 6. At In the embodiment shown, the oscillator 5 thus comprises a phase comparison 3, a VCO 6 and, moreover, a frequency divider 4 for generating a signal of the same frequency as the reference frequency. The phase comparison and VCO components of the oscillator can be implemented on a standard module, for example.

Figur 2 zeigt ein weiteres Ausführungsbeispiel der Erfindung, das übereinstimmend mit Figur 1 ein Netzteil 2 und einen Oszilator 5 mit einem Phasenvergleich 3, einem Frequenzteiler 4 und einem VCO 6 umfaßt. Überdies wird jedoch bei dem in Figur 2 gezeigten Ausführungsbeispiel das mit 141 KHz hochfrequente Signal S3 in einer dem Oszilator nachgeschalteten Modulationseinheit moduliert. Dabei entstehen Sequenzen von Wellenzügen mit jeweils einer Hüllkurve niedrigerer Frequenz als das hochfrequente Signal S3. Hierzu wird das Signal S4, das hier annäherungsweise rechteckförmig ist über einen Differenzierer, hier inform eines RC-Gliedes gleitet, sodaß das Signal S5 inform von hier exponentiell abfallenden Einzelimpulsen erzeugt wird. Dieses Signal S5 wird zur Modulation des hochfrequenten Signals S3 im Modulator 7 eingesetzt, sodaß sich ein Signal S6 ergibt, das hochfrequente Schwingungen mit Hüllkurven inform der hier exponentiell abklingenden Einzelimpulse S5 aufweist. Die Spule L wird mit diesem Signal S6 beaufschlagt. Die Modulation des hochfrequenten Signals mit Sequenzen von exponentiell abfallenden Einzelwellenzügen ergibt eine im Vergleich zum hochfrequenten Dauersignal bessere elektromagnetische Verträglichkeit.FIG. 2 shows a further exemplary embodiment of the invention, which, in accordance with FIG. 1, comprises a power supply unit 2 and an oscillator 5 with a phase comparison 3, a frequency divider 4 and a VCO 6. Furthermore, however, in the exemplary embodiment shown in FIG. 2, the signal S3 high-frequency at 141 kHz is modulated in a modulation unit connected downstream of the oscillator. This creates sequences of wave trains, each with an envelope curve lower in frequency than the high-frequency signal S3. For this purpose, the signal S4, which is approximately rectangular here, slides over a differentiator, here inform of an RC element, so that the signal S5 inform is generated by individual pulses which decrease exponentially here. This signal S5 is used to modulate the high-frequency signal S3 in the modulator 7, so that a signal S6 is obtained which has high-frequency oscillations with envelopes informing the exponentially decaying individual pulses S5. This signal S6 is applied to the coil L. The modulation of the high-frequency signal with sequences of exponentially falling single-wave trains results in an Better electromagnetic compatibility compared to the high-frequency continuous signal.

Überdies kann zur Optimierung der Entfeuchtungswirkung die Luftspule L zusätzlich mit einem niederfrequenten Signal, hier einem durch einen Frequenzteiler 8 erzeugten Signal von 50 Hz über einen Schalter 10 zusätzlich beaufschlagt werden.In addition, to optimize the dehumidification effect, the air coil L can additionally be supplied with a low-frequency signal, in this case a signal of 50 Hz generated by a frequency divider 8, via a switch 10.

Die Erfindung erlaubt insbesondere wegen der aufgrund des Einsatzes eines Oszilators erzielten, hohen Frequenzstabilität mit einem guten Wirkungsgrad die sehr effiziente Entfeuchtung eines Mauerwerks.The invention allows the very efficient dehumidification of masonry, in particular because of the high frequency stability achieved due to the use of an oscillator with a good efficiency.

Claims (10)

Vorrichtung zur Entfeuchtung von Mauerwerk mit einer Spule (L) für die Abstrahlung von hochfrequenten, elektromagnetischen Feldern, dadurch gekennzeichnet, daß der Spule (L) ein Oszillator (5) vorgeschaltet ist, durch den eine hochfrequente Wechselspannung (U) erzeugbar ist, mit der die Spule (L) beaufschlagbar ist.Device for dehumidifying masonry with a coil (L) for the emission of high-frequency, electromagnetic fields, characterized in that the coil (L) is connected upstream of an oscillator (5) by which a high-frequency AC voltage (U) can be generated, with which the coil (L) can be loaded. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Vorrichtung über eine EMV-verträgliches Standardnetzgerät (2) mit einer Versorgungsspannung beaufschlagbar ist.Device according to claim 1, characterized in that the device can be supplied with a supply voltage via an EMC-compatible standard power supply (2). Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Oszillator (5) frequenzstabil ist.Device according to one of the preceding claims, characterized in that the oscillator (5) is frequency stable. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Oszillator (5) als phase-locked-loop (=PLL)-Schaltung ausgebildet ist.Device according to one of the preceding claims, characterized in that the oscillator (5) is designed as a phase-locked loop (= PLL) circuit. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die phase-locked-loop-Schaltung einen voltage-controlled-oscillator (6) umfaßt, der ausgangsseitig (S3) an einen Frequenzteiler (4) angeschlossen ist, welcher wiederum ausgangsseitig (S4) an einen Phasenvergleich (3) zur Ansteuerung des voltage-controlled-oscillators (6) angeschlossen ist.Device according to Claim 4, characterized in that the phase-locked-loop circuit comprises a voltage-controlled oscillator (6) which is connected on the output side (S3) to a frequency divider (4) which in turn is connected on the output side (S4) to one Phase comparison (3) for control of the voltage-controlled oscillator (6) is connected. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß als Referenzfrequenz (S1) des Oszillators (5) einfache oder mehrfache Netzspannungsfrequenz verwendbar ist.Device according to claim 5, characterized in that single or multiple mains voltage frequency can be used as the reference frequency (S1) of the oscillator (5). Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Spule (L) als Luftspule ausgebildet ist.Device according to one of the preceding claims, characterized in that the coil (L) is designed as an air coil. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß dem Oszillator (5) ein Modulator (7) nachgeschaltet ist, durch den Sequenzen von Wellenzügen (S6) mit jeweils einer Hüllkurve niedrigerer Frequenz als die hochfrequenten Schwingungen (S3) erzeugbar sind.Device according to one of the preceding claims, characterized in that the oscillator (5) is followed by a modulator (7) by means of which sequences of wave trains (S6), each with an envelope curve lower in frequency than the high-frequency oscillations (S3), can be generated. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Hüllkurve durch einen eingangsseitig an niederfrequente Rechteck-Wechselspannung angeschlossenen Differenzierer (9) erzeugbar ist, der vorzugsweise einen Kondensator und einen Widerstand umfaßt.Apparatus according to claim 8, characterized in that the envelope can be generated by a differentiator (9) connected on the input side to low-frequency square-wave AC voltage, which preferably comprises a capacitor and a resistor. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Luftspule (L) zusätzlich über einen Schalter (10) mit einer niederfrequenten Spannung beaufschlagbar ist.Device according to one of the preceding claims, characterized in that the air coil (L) can additionally be subjected to a low-frequency voltage via a switch (10).
EP96103451A 1995-03-10 1996-03-06 Dewatering device for masonry Expired - Lifetime EP0736639B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9630369T SI0736639T1 (en) 1995-03-10 1996-03-06 Dewatering device for masonry

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE29504588 1995-03-10
DE29504588U 1995-03-10
DE29511719U 1995-07-20
DE29511719U DE29511719U1 (en) 1995-03-10 1995-07-20 Device for dehumidifying masonry

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EP0736639A1 true EP0736639A1 (en) 1996-10-09
EP0736639B1 EP0736639B1 (en) 2001-08-08

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EP (1) EP0736639B1 (en)
AT (1) ATE204047T1 (en)
ES (1) ES2161931T3 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0928856A1 (en) 1998-01-09 1999-07-14 Hildegard Berger Device for drying and/or desalting of buildings
EP0928854A1 (en) 1998-01-09 1999-07-14 Hildegard Berger Device for drying and/or desalting of buildings
EP0928853A1 (en) 1998-01-09 1999-07-14 Hildegard Berger Device for drying and/or desalting of buildings
EP0928855A1 (en) 1998-01-09 1999-07-14 Hildegard Berger Device for drying and/or desalting of buildings
WO2006016011A1 (en) * 2004-07-08 2006-02-16 Bernard Stumpp Device and method for stopping capillary rise of water and moisture
ITMI20081522A1 (en) * 2008-08-19 2010-02-20 Leonardo Solutions S R L SYSTEM FOR THE CONTROL AND / OR WALL DEHUMIDIFICATION

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010061545A1 (en) 2010-12-23 2012-06-28 Becker & Nensel GbR (Vertretungsberechtigte Gesellschafter: Claudia Becker, 01809 Heidenau und Dipl.-Hyd. Egbert Nensel, 09599 Freiberg) Method for desalination and dehumidification of masonry, involves providing signal loading device with signal generator that is configured to provide low- and high frequency electrical pulse signals

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EP0395085A1 (en) * 1989-04-28 1990-10-31 Zöller, Ernst Method for drying out walls through electrosmosis by means of electromagnetic irradiation and electronic apparatus used therefor
AT392109B (en) * 1986-09-05 1991-01-25 Wigelbeyer Helmut Apparatus for influencing the electromagnetic earth field, in particular for the purpose of drying masonrywork
WO1994020702A2 (en) * 1993-03-08 1994-09-15 Wilhelm Mohorn Device for conveying damp or salts

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Publication number Priority date Publication date Assignee Title
AT392109B (en) * 1986-09-05 1991-01-25 Wigelbeyer Helmut Apparatus for influencing the electromagnetic earth field, in particular for the purpose of drying masonrywork
EP0395085A1 (en) * 1989-04-28 1990-10-31 Zöller, Ernst Method for drying out walls through electrosmosis by means of electromagnetic irradiation and electronic apparatus used therefor
WO1994020702A2 (en) * 1993-03-08 1994-09-15 Wilhelm Mohorn Device for conveying damp or salts

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0928856A1 (en) 1998-01-09 1999-07-14 Hildegard Berger Device for drying and/or desalting of buildings
EP0928854A1 (en) 1998-01-09 1999-07-14 Hildegard Berger Device for drying and/or desalting of buildings
EP0928853A1 (en) 1998-01-09 1999-07-14 Hildegard Berger Device for drying and/or desalting of buildings
EP0928855A1 (en) 1998-01-09 1999-07-14 Hildegard Berger Device for drying and/or desalting of buildings
DE19800597A1 (en) * 1998-01-09 1999-07-22 Hildegard Berger Device for dehumidifying and / or desalting buildings
DE19800598A1 (en) * 1998-01-09 1999-07-22 Hildegard Berger Device for dehumidifying and / or desalting buildings
DE19800595A1 (en) * 1998-01-09 1999-07-22 Hildegard Berger Device for dehumidifying and / or desalting buildings
DE19800596A1 (en) * 1998-01-09 1999-07-22 Hildegard Berger Method and device for dehumidifying and / or desalting buildings
WO2006016011A1 (en) * 2004-07-08 2006-02-16 Bernard Stumpp Device and method for stopping capillary rise of water and moisture
ITMI20081522A1 (en) * 2008-08-19 2010-02-20 Leonardo Solutions S R L SYSTEM FOR THE CONTROL AND / OR WALL DEHUMIDIFICATION
EP2157491A1 (en) * 2008-08-19 2010-02-24 Leonardo Solutions S.r.l. System for monitoring and/or dehumidifying walls
EP2535782A1 (en) * 2008-08-19 2012-12-19 Leonardo Solutions S.r.l. System for dehumidifying walls

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EP0736639B1 (en) 2001-08-08
ATE204047T1 (en) 2001-08-15
ES2161931T3 (en) 2001-12-16

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