WO2009109675A1 - Altavoz autorrefrigerado perfeccionado - Google Patents
Altavoz autorrefrigerado perfeccionado Download PDFInfo
- Publication number
- WO2009109675A1 WO2009109675A1 PCT/ES2009/000083 ES2009000083W WO2009109675A1 WO 2009109675 A1 WO2009109675 A1 WO 2009109675A1 ES 2009000083 W ES2009000083 W ES 2009000083W WO 2009109675 A1 WO2009109675 A1 WO 2009109675A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core ring
- permanent magnet
- coil
- speaker
- cylindrical
- Prior art date
Links
- 238000001816 cooling Methods 0.000 title abstract description 11
- 230000005291 magnetic effect Effects 0.000 claims abstract description 11
- 230000005520 electrodynamics Effects 0.000 claims abstract description 5
- 210000001577 neostriatum Anatomy 0.000 claims description 2
- 238000005057 refrigeration Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003534 oscillatory effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
-
- 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
- H04R9/06—Loudspeakers
-
- 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
- H04R9/025—Magnetic circuit
Definitions
- the object of the present invention refers to a self-cooled speaker of electrodynamic type, although optionally, it can also be any other type of speaker.
- An electrodynamic loudspeaker is constituted, in principle, by a mobile electric coil placed in the circular air gap of a closed, permanent and fixed magnetic circuit; when the coil is traveled by an alternating electric intensity, alternating electric forces are generated in said coil in accordance with that alternating intensity; it is said forces that cause the coil to vibrate (by virtue of its mobility) and transmit said vibrations, either to a membrane, or to an acoustic screen, to which it is attached; in this way the sound is generated and transmitted to the surrounding air.
- the magnetic circuit of a speaker consists of at least three basic elements: a permanent cylindrical magnet and two polar pieces; one of them (the upper polar) is a cylindrical "core ring” of temporary magnetism (made of “sweet” iron or similar) placed on the permanent magnet, while the other (the lower polar) is a “return vessel "(in charge of closing the magnetic circuit) of circular plan, on which the permanent magnet sits;
- the air gap where the mobile coil is located is the circular space that is between the outer cylindrical face of the "core ring” and the upper part of the inner cylindrical face of the "return vessel".
- the electrical energy consumed by a loudspeaker depends on the intensity that circulates through the coil thereof, which in turn depends, in a broad sense, on the impedance of the loudspeaker, and in particular, on the electrical resistance of its coil; ideally, all the electrical energy that reaches the speaker should be converted into acoustic energy, but this does not happen because a good part of said energy is converted into heat; This heat, generated in the mobile coil itself, is a consequence of the Joul effect due to the passage of the electric intensity through the turns of said coil. The heat generated causes two negative effects on the speaker.
- the heating of the coil produces an increase in the electrical resistance of its turns (by virtue of the positive temperature coefficient presented by the metals with which they are usually made), which causes a decrease in the electrical intensity and by Therefore, of the power that reaches the speaker; This results in a decrease in the sound level of the speaker known as "loss of power compression".
- the new perfected self-cooled loudspeaker has been designed, object of this technical report.
- the present invention refers to a new loudspeaker model that, equipped with the ability to self-cool, allows power increases of at least 35%, with respect to other models of performance, quality and prices, similar.
- the new loudspeaker is made in such a way that its magnetic circuit has, in the air gap, a helical groove on both sides of the mobile coil; it is the oscillatory movement of the coil itself, which, transmitted to the "dust cover" of the acoustic membrane, serves as a driving pump (for reciprocating) of the forced cooling air; said forced air is then circulated, reciprocatingly, inside a refrigeration circuit of which the helical groove of the air gap is part.
- the cooling of the mobile coil is much more effective, since the cooling air, forced to circulate around the coil and on both sides thereof, inside the helical grooves, is much longer in direct contact with it; Thus, the heat transmission, by contact between the cooling air and the coil, is much more efficient.
- the new speaker has, in essence, a magnetic circuit composed of three basic elements: a permanent cylindrical magnet and two polar pieces, the upper and the lower;
- the upper pole piece is a cylindrical "core ring", with a helical groove in its outer cylindrical face; said "core ring” is placed on the permanent magnet;
- the lower pole piece is a "return vessel” (in charge of closing the magnetic circuit) of circular plan, with a helical groove in the upper part of its inner cylindrical face, coinciding with the groove of the "core ring”; the permanent magnet sits on the "return vessel”.
- the air gap where the mobile coil is located, is the helically grooved circular space between the outer cylindrical face of the "core ring” and the upper part of the inner cylindrical face of the "return vessel".
- the "core ring” is also provided with a central through hole which, in addition to serving as an additional cooling hole, also serves to alleviate the excessive compression that could occur (in the case of vibrations due to loud sounds) between the "core ring” and the “dust cover” of the membrane, since some elements of the speaker are counterproductive to said compression.
- the "core ring” is provided with additional through-cooling holes.
- Figure 1 shows a view in profile and exploded view of the different elements that make up the new speaker; the "return vessel”, as well as the coil, the membrane and its attached “dust cover”, are observed in section.
- Figure 2 shows the magnetic circuit mounted, but separated from the coil and its screen.
- Figure 3 shows all the assembled elements in their final positions; the flow of the outgoing refrigerator air is also shown, during the movement of the screen towards the magnet; during the reverse movement of the screen, the air flow would be the opposite, that is, incoming.
- Figures 4 and 5 show paths, in plan and profile, respectively, of the "core ring”.
- the new perfected self-cooled speaker, electrodynamic type consists of a magnetic circuit consisting of a permanent magnet (1) cylindrical and two polar pieces (2 and 3), one of which is a "core ring” (2) cylindrical placed on the permanent magnet (1), while the other pole piece is a "return vessel” (3) of circular plan, on which the permanent magnet (1) sits.
- the novel speaker is characterized in that the "core ring” (2) has a plurality of helical grooves (4) in its outer cylindrical face, while the “return vessel” (3) also has a plurality of helical grooves (5 ) in the upper part of its inner cylindrical face, coinciding with the striatum (4) of the "core ring" (2).
- the coil (10) is housed in the air gap formed between the outer cylindrical face of the "core ring” (2) and the inner cylindrical face of the "return vessel". It is the oscillatory movement of the coil (10) itself, which, transmitted to the "dust cover” (6) of the membrane (7), is used as a booster pump for forced air reciprocating (8) for cooling.
- the "core ring” (2) is provided with additional through holes (9) for cooling and is also provided with a central through hole (11) which, in addition to serving as an additional cooling hole, also serves to relieve waves of Excessive compression that could occur between the "core ring” (2) and the "dust cover” (6) of the membrane (7), since some elements of the loudspeaker such excessive compression are counterproductive.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09717324A EP2352310A4 (en) | 2008-03-05 | 2009-02-12 | IMPROVED AUTOREFRIGERATED SPEAKER |
US12/866,787 US20100316248A1 (en) | 2008-03-05 | 2009-02-12 | Self-cooling loudspeaker |
CN2009801079130A CN102027759A (zh) | 2008-03-05 | 2009-02-12 | 电动式改良型自冷扬声器 |
CA2716045A CA2716045A1 (en) | 2008-03-05 | 2009-02-12 | Improved self-cooling loudspeaker |
BRPI0905998-9A BRPI0905998A2 (pt) | 2008-03-05 | 2009-02-12 | "aperfeiçoamento em alto-falante autorrefrigerado" |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ESP200800649 | 2008-03-05 | ||
ES200800649A ES2325518B1 (es) | 2008-03-05 | 2008-03-05 | Altavoz autorrefrigerado perfeccionado. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009109675A1 true WO2009109675A1 (es) | 2009-09-11 |
Family
ID=41044992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2009/000083 WO2009109675A1 (es) | 2008-03-05 | 2009-02-12 | Altavoz autorrefrigerado perfeccionado |
Country Status (8)
Country | Link |
---|---|
US (1) | US20100316248A1 (es) |
EP (1) | EP2352310A4 (es) |
CN (1) | CN102027759A (es) |
BR (1) | BRPI0905998A2 (es) |
CA (1) | CA2716045A1 (es) |
ES (1) | ES2325518B1 (es) |
RU (1) | RU2010140123A (es) |
WO (1) | WO2009109675A1 (es) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013132094A (ja) * | 2011-12-20 | 2013-07-04 | Shimano Inc | ハブシェル、回転子および自転車用発電ハブ |
CN114151323A (zh) * | 2021-12-07 | 2022-03-08 | 冯超超 | 一种隔膜泵的散热结构 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4378471A (en) * | 1981-02-18 | 1983-03-29 | Ibuki Kogyo Co., Ltd. | Horn speaker with linear grooves in a front surface of a pole piece of a yoke |
US20020094104A1 (en) * | 2001-01-16 | 2002-07-18 | Bush Michael Eugene | Loudspeaker cooling device |
US20030081808A1 (en) * | 2001-10-30 | 2003-05-01 | Jason Kemmerer | Loudspeaker having cooling system |
US6721435B2 (en) * | 2000-02-22 | 2004-04-13 | Babb Laboratories | Acoustic loudspeaker with energy absorbing bearing and voice coil, and selective sound dampening and dispersion |
US20070237351A1 (en) * | 2006-03-28 | 2007-10-11 | Hyde Ralph E | Self-cooling electromagnetic transducer |
ES2286821T3 (es) * | 1995-04-18 | 2007-12-01 | Harman International Industries Incorporated | Activador de doble bobina con alojamiento multifuncion. |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5497428A (en) * | 1994-11-01 | 1996-03-05 | Rojas; Omar E. | Self-cooled magnetic structure for loudspeakers |
US5909015A (en) * | 1998-03-26 | 1999-06-01 | Yamamoto; Shuji | Self-cooled loudspeaker |
CA2245351A1 (en) * | 1998-09-08 | 2000-03-08 | The Canadian Loudspeaker Corporation | Forced air cooling system |
CA2270726A1 (en) * | 1998-09-08 | 2000-03-08 | The Canadian Loudspeaker Corporation | Loudspeaker |
US7634101B2 (en) * | 2006-01-31 | 2009-12-15 | Alpine Electronics, Inc | Thermal management system for loudspeaker having internal heat sink and vented top plate |
-
2008
- 2008-03-05 ES ES200800649A patent/ES2325518B1/es active Active
-
2009
- 2009-02-12 US US12/866,787 patent/US20100316248A1/en not_active Abandoned
- 2009-02-12 RU RU2010140123/28A patent/RU2010140123A/ru not_active Application Discontinuation
- 2009-02-12 CA CA2716045A patent/CA2716045A1/en not_active Abandoned
- 2009-02-12 EP EP09717324A patent/EP2352310A4/en not_active Withdrawn
- 2009-02-12 WO PCT/ES2009/000083 patent/WO2009109675A1/es active Application Filing
- 2009-02-12 BR BRPI0905998-9A patent/BRPI0905998A2/pt not_active IP Right Cessation
- 2009-02-12 CN CN2009801079130A patent/CN102027759A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4378471A (en) * | 1981-02-18 | 1983-03-29 | Ibuki Kogyo Co., Ltd. | Horn speaker with linear grooves in a front surface of a pole piece of a yoke |
ES2286821T3 (es) * | 1995-04-18 | 2007-12-01 | Harman International Industries Incorporated | Activador de doble bobina con alojamiento multifuncion. |
US6721435B2 (en) * | 2000-02-22 | 2004-04-13 | Babb Laboratories | Acoustic loudspeaker with energy absorbing bearing and voice coil, and selective sound dampening and dispersion |
US20020094104A1 (en) * | 2001-01-16 | 2002-07-18 | Bush Michael Eugene | Loudspeaker cooling device |
US20030081808A1 (en) * | 2001-10-30 | 2003-05-01 | Jason Kemmerer | Loudspeaker having cooling system |
US20070237351A1 (en) * | 2006-03-28 | 2007-10-11 | Hyde Ralph E | Self-cooling electromagnetic transducer |
Non-Patent Citations (1)
Title |
---|
See also references of EP2352310A4 * |
Also Published As
Publication number | Publication date |
---|---|
ES2325518B1 (es) | 2010-07-20 |
EP2352310A4 (en) | 2013-04-03 |
EP2352310A1 (en) | 2011-08-03 |
US20100316248A1 (en) | 2010-12-16 |
CN102027759A (zh) | 2011-04-20 |
RU2010140123A (ru) | 2012-04-10 |
CA2716045A1 (en) | 2009-09-11 |
ES2325518A1 (es) | 2009-09-07 |
BRPI0905998A2 (pt) | 2015-06-30 |
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