DE865833C - Process for generating ultrasound - Google Patents

Process for generating ultrasound

Info

Publication number
DE865833C
DE865833C DESCH7296A DESC007296A DE865833C DE 865833 C DE865833 C DE 865833C DE SCH7296 A DESCH7296 A DE SCH7296A DE SC007296 A DESC007296 A DE SC007296A DE 865833 C DE865833 C DE 865833C
Authority
DE
Germany
Prior art keywords
dispersum
generating ultrasound
saturation
magnetostrictive
devices
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.)
Expired
Application number
DESCH7296A
Other languages
German (de)
Inventor
Hans Heinrich Dr Rust
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schoeller and Co Elektrotecnische Fabrik GmbH and Co
Original Assignee
Schoeller and Co Elektrotecnische Fabrik GmbH and Co
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 Schoeller and Co Elektrotecnische Fabrik GmbH and Co filed Critical Schoeller and Co Elektrotecnische Fabrik GmbH and Co
Priority to DESCH7296A priority Critical patent/DE865833C/en
Application granted granted Critical
Publication of DE865833C publication Critical patent/DE865833C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/08—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with magnetostriction

Description

Verfahren zur Erzeugung von Ultraschall Es sind bereits Vorrichtungen zur Erzeugung von Ultraschall nach dem magnetostriktiven Prinzip vorgeschlagen worden, bei welchen ein magnetrostriktiv wirksames Dispersum in gasförmigem, flüssigem oder festem Dispersionsmittel durch eine außerhalb oder innerhalb des Dispersums angeordnete und mit mittel- oder hochfrequentem elektrischen Strom beschickte Spule angeregt wird. Derartige Vorrichtungen beruhen auf dem Gedanken, durch eine möglichst weit getriebene Unterteil.ung der magnetostriktiven Schwingmasse die Wirbelstromverluste auf ein Minimum herabzusetzen. Als Dispersum wurden ferromagnetische Stoffe in feinster Verteilung, wie Carbonyleisen oder Nickelpulver, vorgeschlagen. Die Erregerstromstärke wurde so eingestellt, daß die magnetische Durchflutung der ferromagnetischen Teilchen unter ihrer Sättigung bleibt.Methods for generating ultrasound Devices already exist been proposed for the generation of ultrasound according to the magnetostrictive principle, in which a magnetrostrictively effective dispersum in gaseous, liquid or solid dispersant by an arranged outside or inside the dispersum and excited coil charged with medium or high frequency electric current will. Such devices are based on the idea of going as far as possible driven subdivision of the magnetostrictive oscillating mass the eddy current losses reduce to a minimum. Very fine ferromagnetic materials were used as dispersants Distribution, such as carbonyl iron or nickel powder, suggested. The excitation current was adjusted so that the magnetic flux of the ferromagnetic particles remains below its saturation.

Die Erfindung beruht auf der Erkenntnis, daß Ultraschallerzeuger der angegebenen Art einen magnetostriktiven Volumeneffekt zeigen, wenn die magnetische Durchflutung über die obere Sättigungsgrenze getrieben wird, im Gegensatz zu dem ausschließlich linearen magnetostriktiven Effekt unterhalb der Sättigung. Der Volumeneffekt kann in seiner Intensität wesentlich stärker sein (etwa um eine Größenanordnung) als der lineare Effekt unter sonst gleichen Umständen. Die Erfindung besteht daher in dem Verfahren, Ultraschallerzeuger der beschriebenen Art oberhalb der magnetischen Sättigung des_ferromagnetischen Dispersums zu betreiben.The invention is based on the knowledge that the ultrasonic generator indicated type show a magnetostrictive volume effect if the magnetic Flooding is driven above the upper saturation limit, in contrast to that exclusively linear magnetostrictive effect below saturation. The volume effect can be much stronger in its intensity (about an order of magnitude) than the linear effect, all other things being equal. The invention therefore exists in the method, ultrasonic generator of the type described above magnetic To operate saturation of the ferromagnetic dispersum.

Claims (1)

PATENTANSPRUCH: " Verfahren zur Erzeugung von Ultraschall mit Vorrichtungen, bei welchen ein magnetostriktiv wirksames Dispersum in einem gasförmigen, flüssigen oder festen Dispersionsmittel . durch eine mit mittel- oder hochfreqentem el,e'ktrischen Strom beschickte Spüle erregt wird, dadurch gekennzeichnet, daß die magnetische Durchflutung dies Dispersums über die Sättigungsgrenze erhöht wird.PATENT CLAIM: "Method for generating ultrasound with devices, in which a magnetostrictively effective dispersum in a gaseous, liquid or solid dispersants. by a medium or high frequency electrical, electrical Current charged sink is excited, characterized in that the magnetic Flooding this dispersum is increased above the saturation limit.
DESCH7296A 1951-08-12 1951-08-12 Process for generating ultrasound Expired DE865833C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH7296A DE865833C (en) 1951-08-12 1951-08-12 Process for generating ultrasound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH7296A DE865833C (en) 1951-08-12 1951-08-12 Process for generating ultrasound

Publications (1)

Publication Number Publication Date
DE865833C true DE865833C (en) 1953-02-05

Family

ID=7425290

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH7296A Expired DE865833C (en) 1951-08-12 1951-08-12 Process for generating ultrasound

Country Status (1)

Country Link
DE (1) DE865833C (en)

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