DE732300C - High performance electrodynamic loudspeaker with cooled field and voice coil - Google Patents

High performance electrodynamic loudspeaker with cooled field and voice coil

Info

Publication number
DE732300C
DE732300C DET55999D DET0055999D DE732300C DE 732300 C DE732300 C DE 732300C DE T55999 D DET55999 D DE T55999D DE T0055999 D DET0055999 D DE T0055999D DE 732300 C DE732300 C DE 732300C
Authority
DE
Germany
Prior art keywords
coil
field coil
field
loudspeaker
cooled
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
DET55999D
Other languages
German (de)
Inventor
Willy Schulze
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.)
Telefunken AG
Original Assignee
Telefunken AG
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 Telefunken AG filed Critical Telefunken AG
Priority to DET55999D priority Critical patent/DE732300C/en
Application granted granted Critical
Publication of DE732300C publication Critical patent/DE732300C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/022—Cooling arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Motor Or Generator Cooling System (AREA)

Description

Elektrodynamischer Lautsprecher hoher Leistung mit gekühlter Feld- und Schwingspule Im Hauptpatent ; 19 o i i ist ein elektrodynamischer Lautsprecher hoher Leistung mit gekühlter Schwingspule beschrieben, bei dem die Schwingspule und gegebenenfalls auch die Feldspule mit von einer besonderen ILühlmediumquelle gelieferter Luft, welche durch den Luftspalt, in dem die Schwingspuke schwingt, hindurchgeführt bzw. an der Feldspule vorbeigeführt wird, gekühlt wird.High-performance electrodynamic loudspeaker with cooled field and voice coil In the main patent; 19 oii describes a high-performance electrodynamic loudspeaker with a cooled voice coil, in which the voice coil and possibly also the field coil with air supplied by a special cooling medium source, which is passed through the air gap in which the voice coil vibrates or past the field coil, is cooled.

Bei bestimmten An-,vendungsgebieten solcher Lautsprecher ist eine sehr kurze Baumeise für das Magnetsystem erforderlich. Mit der im Hauptpatent angegebenen Kühlung der Feldspule an dem dem Mittelpol zugekehrten Innern der Spule läßt sich-eine solche kurze Bauweise nicht erreichen.In certain areas of application such loudspeakers is a very short construction tit required for the magnet system. With the one specified in the main patent Cooling of the field coil on the interior of the coil facing the center pole can be achieved such a short construction cannot be achieved.

Gemäß der Erfindung wird dieser Nachteil dadurch behoben und die Herstellung eines verhältnismäßig kleinen Magnetsystems bei Anwendung hoher Erregerleistungen dadurch ermöglicht, daß die Feldspule allseitig, also innen und außen und gegebenenfalls auch an den Flanschen gekühlt wird. Die Außenkühlung ist dadurch besonders wirksam, daß eine große Abkühlflächc zur Verfügung steht.According to the invention, this disadvantage is eliminated and the manufacture a relatively small magnet system when using high excitation powers thereby made possible that the field coil on all sides, ie inside and outside and optionally is also cooled at the flanges. The external cooling is particularly effective as a result, that a large cooling surface is available.

Die Abbildung veranschaulicht ein Ausführungsbeispiel des Gegenstandes der Erfindung. Das Magnetjoch ist mit i, die Polplatte mit 2, der Mittelpol mit 8 bezeichnet. An der Luftabführung 3 ist ein zylindrischer Topf 5 angesetzt. Zwischen diesem und der Feldspule q. wird der Spalt io gebildet, während infolge der wie bei der Anordnung im Hauptpatent vorgesehenen Distanzstücke zwischen Spule .1 und Mittelpol 8 der Spalt i i gebildet w=ird. Die von 9 kommende Kühlluft wird durch den Spalt io außen an der Feldspule 4. durch den Spalt i i zwischen Mittelpol 8 und Feldspule ,1 entlanggeführt. Zwischen dem Teil 3 und der Feldspule .1 ist eine Dichtung 6 angeordnet, die den äußeren Luftweg von dem inneren Luftweg trennt. Durch die Löcher;, welche den Hauptströmungswiderstand für die Kühluft der Feldspule bilden, läßt sich die Luftmenge in beiden Luftwegen genau festlegen. Die Luftabführung 3 ist doppelseitig vorgesehen, was sich ebenfalls hinsichtlich der Herabsetzung der Länge des Magnetsystems günstig auswirkt. Der Spulenkörper i2 der Feldspule wird zw=eckmäßig in bekannter Weise aus Metall hergestellt, um die Wärmeabfuhr von der Spule zu erleichtern.The figure illustrates an embodiment of the object the invention. The magnet yoke is marked with i, the pole plate with 2, the center pole with 8 designated. A cylindrical pot 5 is attached to the air discharge 3. Between this and the field coil q. the gap io is formed while as a result of how in the arrangement in the main patent provided spacers between the coil .1 and Center pole 8 of the gap i i is formed w = ird. The cooling air coming from 9 is through the gap io on the outside of the field coil 4. through the gap i i between the center pole 8 and field coil, 1 guided along. Between the part 3 and the field coil .1 is a Seal 6 arranged, which separates the outer airway from the inner airway. By the holes; which form the main flow resistance for the cooling air of the field coil, the amount of air in both airways can be precisely determined. The air exhaust 3 is provided on both sides, which is also reflected in the reduction of the Length of the magnet system has a favorable effect. The coil body i2 of the field coil is zw = made of metal in a known manner in order to dissipate heat from the To facilitate coil.

Claims (3)

PATENT A`SPRGCHE: i. Elektrodynamischer Lautsprecher hoher Leistung mit gekühlter Feld- und Schwingspule nach Patent 7i9 oi i, dadurch gekennzeichnet, daß die Feldspule allseitig, also innen und außen und gegebenenfalls noch an den Flanschen gekühlt ist. PATENT APPLICATION: i. Electrodynamic loudspeaker of high power with cooled field and voice coil according to patent 7i9 oi i, characterized in that the field coil is cooled on all sides, that is to say inside and outside and optionally also on the flanges. 2. Lautsprecher nach Anspruch i, dadurch gekennzeichnet, daß die Feldspule mit einem Metallspulenkörper versehen ist. 2. Loudspeaker according to claim i, characterized in that that the field coil is provided with a metal coil body. 3. Lautsprecher nach Anspruch i, dadurch gekennzeichnet, daß die Feldspule außen von einem zylindrischen Topf mit einem geringen Abstand derart umgeben ist, daß ein Luftspalt zwischen Spule und Topf zur Führung der die Außenseite der Feldspule kühlenden Luft vorhanden ist. q.. Lautsprecher nach Anspruch i, dadurch gekennzeichnet, daß die Luftwege für die die Innenseite und die Atifienseitc der Spule kühlende Luft bis zum Eintritt in den Luftabführungskanal völlig getrennt sind. Lautsprecher nach Anspruch 4, d-idurch gekennzeichnet, daß ein zylindrischer Dichtungsring zwischen Stirnseite der Feldspule und Luftabführungskanal zur Trennung der Luftwege gelegt ist.3. Loudspeaker after Claim i, characterized in that the field coil has a cylindrical outside Pot is surrounded with a small distance so that an air gap between the coil and a pot for guiding the air cooling the outside of the field coil is present. q .. loudspeaker according to claim i, characterized in that the airways for the the inside and the atifienseitc of the coil cooling air until it enters the air discharge duct are completely separated. Loudspeaker according to claim 4, d-i by characterized in that a cylindrical sealing ring between the end face of the field coil and air discharge duct is laid to separate the airways.
DET55999D 1938-10-25 1941-08-01 High performance electrodynamic loudspeaker with cooled field and voice coil Expired DE732300C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET55999D DE732300C (en) 1938-10-25 1941-08-01 High performance electrodynamic loudspeaker with cooled field and voice coil

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DET51174D DE719011C (en) 1938-10-25 1938-10-25 High performance electrodynamic loudspeaker with cooled voice coil
DET55999D DE732300C (en) 1938-10-25 1941-08-01 High performance electrodynamic loudspeaker with cooled field and voice coil

Publications (1)

Publication Number Publication Date
DE732300C true DE732300C (en) 1943-02-26

Family

ID=7563590

Family Applications (4)

Application Number Title Priority Date Filing Date
DET51174D Expired DE719011C (en) 1938-10-25 1938-10-25 High performance electrodynamic loudspeaker with cooled voice coil
DET53305D Expired DE719947C (en) 1938-10-25 1940-01-19 High performance electrodynamic loudspeaker with cooled voice coil
DET53694D Expired DE732299C (en) 1938-10-25 1940-04-26 Separately excited electrodynamic loudspeaker of high power
DET55999D Expired DE732300C (en) 1938-10-25 1941-08-01 High performance electrodynamic loudspeaker with cooled field and voice coil

Family Applications Before (3)

Application Number Title Priority Date Filing Date
DET51174D Expired DE719011C (en) 1938-10-25 1938-10-25 High performance electrodynamic loudspeaker with cooled voice coil
DET53305D Expired DE719947C (en) 1938-10-25 1940-01-19 High performance electrodynamic loudspeaker with cooled voice coil
DET53694D Expired DE732299C (en) 1938-10-25 1940-04-26 Separately excited electrodynamic loudspeaker of high power

Country Status (3)

Country Link
US (1) US2270787A (en)
DE (4) DE719011C (en)
FR (1) FR869648A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524780A (en) * 1945-07-07 1950-10-10 Rola Company Inc Pole piece centering arrangement for permanent magnet electrodynamic loudspeakers
US4259550A (en) * 1978-04-15 1981-03-31 Yoshiro Nakamatsu Acoustic device with floating vibrating means
JPH06501354A (en) * 1990-10-09 1994-02-10 スタージェ・アコムパニー・ベスローテン・フェンノートシャップ Dynamic loudspeaker with cooling device
NL9002510A (en) * 1990-11-16 1992-06-16 Stage Accompany B V SPEAKER WITH COOLING.
US8577074B2 (en) * 2011-02-14 2013-11-05 Robert Bosch Gmbh Vortex cooling of voice coils
CN109005491B (en) * 2018-07-03 2023-06-13 惠州学院 MEMS matrix microphone for measuring travel environmental noise with golden spiral structure

Also Published As

Publication number Publication date
DE719947C (en) 1942-04-25
US2270787A (en) 1942-01-20
FR869648A (en) 1942-02-09
DE719011C (en) 1942-03-26
DE732299C (en) 1943-02-26

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