WO1990000093A1 - Generateur sonore basse frequence, en particuliler pour grills - Google Patents

Generateur sonore basse frequence, en particuliler pour grills Download PDF

Info

Publication number
WO1990000093A1
WO1990000093A1 PCT/SE1989/000367 SE8900367W WO9000093A1 WO 1990000093 A1 WO1990000093 A1 WO 1990000093A1 SE 8900367 W SE8900367 W SE 8900367W WO 9000093 A1 WO9000093 A1 WO 9000093A1
Authority
WO
WIPO (PCT)
Prior art keywords
low frequency
frequency sound
sound generator
diaphragm
generator according
Prior art date
Application number
PCT/SE1989/000367
Other languages
English (en)
Inventor
Mats Olsson
Original Assignee
Infrasonik Ab
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 Infrasonik Ab filed Critical Infrasonik Ab
Publication of WO1990000093A1 publication Critical patent/WO1990000093A1/fr
Priority to DK290990A priority Critical patent/DK290990A/da
Priority to FI906392A priority patent/FI906392A0/fi
Priority to NO90905637A priority patent/NO905637L/no

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills
    • A47J37/07—Roasting devices for outdoor use; Barbecues
    • A47J37/0704—Roasting devices for outdoor use; Barbecues with horizontal fire box
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills
    • A47J37/07—Roasting devices for outdoor use; Barbecues
    • A47J37/0754—Roasting devices for outdoor use; Barbecues with blowers providing forced air circulation

Definitions

  • This invention relates to a low frequency sound generator especially suited for the use in infrasound barbecue grills, open fire stoves or other infrasound supported combustion.
  • air pulses are produced by means of a flexible bellows mounted on one side of the resonator and which is given a reciprocating movement by means of a crank mechanism connected to the outside of the bellow
  • a flexible bellows mounted on one side of the resonator and which is given a reciprocating movement by means of a crank mechanism connected to the outside of the bellow
  • the bellows can be replaced a diaphragm in order to achieve a relatively high amplitude in the same way as wh using a bellows.
  • the apparatus according to the present invention relates to an improved design of low frequency sound generator for grills as described above.
  • the heavy and spac demanding box consisting of the Helmholtz resonator can be excluded due to the f that the new sound generator is very powerful.
  • the new generator comprises a dri unit including an electro magnet, which is being allowed to influence a diaphragm suspended with springs, and where said diaphragm and springs together form an oscillating mass-spring system having a certain, predetermined natural frequency.
  • the apparatus provides a more effective combustion which results in lesser quanti of soot and smoke contaminating the food to be grilled and also results in quicker lighting of the fuel.
  • Fig 1 shows an explanatory sketch of an infrasound grill
  • Fig 2 is an exploded view showing the design of one embodiment of the infrasound generator
  • Fig 3 shows a cross-section of a second embodiment of the infrasound generator.
  • Fig 1 shows an infrasound barbecue grill with a container 1.
  • a grate 2 is situated, on which fuel, such as preferably charcoal, is pl
  • a gridiron 3 is situated at a suitable height, preferably changea on which the foodstuffs to be grilled are placed.
  • At the bottom of the container 1 t is an opening which through a pipe 4 leads down to an ash box 5.
  • a pipe 4 leads down to an ash box 5.
  • the infrasound generator 7 itself is connected
  • the grill may also equipped with a hole or connection at the bottom of the container for attachment .
  • LP-gas container or equivalent which will be used when lighting the grill.
  • the infrasound generator itself is run by electricity, for outdoor grills preferably with th help of batteries.
  • Fig 2 and Fig 3 shows two different embodiment of the infrasound generator.
  • infrasound generator there is a flange 8, 29 through which the infrasound genera connected to the horisontal pipe 6 of the infrasound grill.
  • the flange 8, 29 and th pipe 6 may in some cases be constructed as one part.
  • On the flange 8, 29 there front plate 9, 30 which preferably has the shape of a truncated cone. Due to this design the air resistance is decreased when air eventually is to pass through the flange 8, 29.
  • the front plate 9, 30 is connected to a rear cover plate 11 , 32 throu sweep 10, 31. Together, the front plate 9, 30, the sweep 10, 31 and the rear cov plate 11 , 32 form a housing.
  • the cover plate 11 may also have the shape of a truncated cone or be almost flat with a sligh bellying surface turned away from the sweep.
  • Fig 3 shows an embodiment with a completely flat rear cover plate 32.
  • the rear cover plate 11 , 32 is equipped with h 12, 33 to allow air to pass.
  • Inside the sweep 10, 31 there is an airproof cloth 13, 3 installed. This cloth is at one end fastened to the housing and at its other end fastened to a diaphragm 14, 35 mounted inside the housing.
  • t cloth 13 is fastened to that end of the front plate 9 which is turned towards the sw 10 and said diaphragm 14 is being mounted at that side of the sweep which is turn towards the rear cover plate 11.
  • the cloth 3 may also be fastened to the rear cover plate 32 while the diaphragm 35 is mounte by means of springs 36, 37 to that end of the sweep 31 which is facing the front pl 30, or even to the front plate.
  • springs 36, 37 between the diaphr 14, 35 and the housing there are located several mechanical springs 15,16, 36, 3 In the embodiment of Fig 2 two crossed plate springs are used.
  • helical springs 36, 37 are used with a radially located fixing point and in this embodiment springs also functions as suspension for the diaphragm in addition to the function described below.
  • Other types of springs and spring arrangements may of course b used as well. These springs are especially selected in order to give the mass-spri system a certain natural frequency.
  • a spacer ring may be used which is placed inside the rear cover plate 11.
  • the springs may be secured into this spacer ringl 7 or into any of the parts 9, 10, 11 forming the housi and into the diaphragm 14. In the embodiment according to Fig 3 no spacer ring is needed.
  • link mechanism 20, 40 may have a certain flexibility in order to absorb irregularities in the reciprocating movements of the diaphragm, if 5 and thus preventing them from propagating to the plunge 19, 39.
  • the link mechanism 20 may be made of rubber or other suitable material.
  • the infrasound generator functions as follows. At rest, i.e. when the electro magn 0 not switched on, the plunge is partly drawn out of the magnet centre with the help the spring power in the springs 15,16, 36, 37. When the magnet is switched on, it strives to draw the plunge into the centre of the magnet and by means of the link mechanism 20, 40 the springs and the diaphragm 14, 35 are consequently move from their rest position towards the magnet. A condition for the springs and diaph
  • the mass of this oscillating mass-spri system does not only include the mass of the diaphragm but includes also the m of the springs, the fastening device for the springs etc, the link mechanism, the
  • the apparatus according to the invention is not only restricted to use with barbe grills, open fire stoves and restaurant grill as described here, but may also be us other apparatuses where a small and less space demanding low frequency sound generator is required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Baking, Grill, Roasting (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

L'appareil décrit dans la présente invention constitue un générateur sonore basse fréquence particulièrement approprié pour être utilisé avec des grills à infrarouge ou autres ustensiles de combustion par infrarouge. Un logement, formé par une plaque frontale (9, 30), une plaque de couverture arrière (11, 32) et une aile (10, 31) reliant les deux plaques, est relié au grill par l'intermédiaire d'une bride (8, 29). Grâce à un électro-aimant (18, 38), un mouvement alternatif est généré dans un diaphragme (14, 35) situé à l'intérieur du logement et ce mouvement alternatif produit de l'air pulsé d'une certaine basse fréquence qui se propage depuis le diaphragme (14, 35) par la bride (8, 29) jusque dans le foyer de combustion.
PCT/SE1989/000367 1988-06-29 1989-06-27 Generateur sonore basse frequence, en particuliler pour grills WO1990000093A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DK290990A DK290990A (da) 1988-06-29 1990-12-06 Lavfrekvens-lydgenerator, isaer til grill
FI906392A FI906392A0 (fi) 1988-06-29 1990-12-21 Laogfrekvenstongenerator i synnerhet foer grillar.
NO90905637A NO905637L (no) 1988-06-29 1990-12-28 Lavfrekvens lydgenerator, saerlig for griller.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8802451-8 1988-06-29
SE8802451A SE461896B (sv) 1988-06-29 1988-06-29 Laagfrekvensljudgenerator foer grillar

Publications (1)

Publication Number Publication Date
WO1990000093A1 true WO1990000093A1 (fr) 1990-01-11

Family

ID=20372776

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1989/000367 WO1990000093A1 (fr) 1988-06-29 1989-06-27 Generateur sonore basse frequence, en particuliler pour grills

Country Status (10)

Country Link
EP (1) EP0428533A1 (fr)
JP (1) JPH03505423A (fr)
AU (1) AU626894B2 (fr)
CA (1) CA1313980C (fr)
DK (1) DK290990A (fr)
ES (1) ES2014705A6 (fr)
FI (1) FI906392A0 (fr)
NZ (1) NZ229770A (fr)
SE (1) SE461896B (fr)
WO (1) WO1990000093A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018080367A1 (fr) * 2016-10-31 2018-05-03 Mats Olsson Générateur d'infrasons pour améliorer la combustion de combustibles solides

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1173708A (en) * 1915-09-23 1916-02-29 Henry M Chance Method for burning fuel.
SE412635B (sv) * 1977-02-17 1980-03-10 Enerus Erik Oscar Sett vid forbrenning av fasta, flytande eller gasformiga brenslen
EP0098949A1 (fr) * 1982-07-01 1984-01-25 Eppendorf Gerätebau Netheler + Hinz GmbH Procédé pour agiter un échantillon d'un liquide à analyser
WO1985002452A1 (fr) * 1983-12-02 1985-06-06 Insako Kb Procede et dispositif d'intensification par infrasons d'un lit incandescent
EP0251430A1 (fr) * 1986-04-01 1988-01-07 Hayashibara, Ken Dispositif de stimulations par vibration
EP0266485A2 (fr) * 1986-11-05 1988-05-11 ELECTRONSYSTEM S.p.A. Trompe électromagnétique avec excitation d'un diaphragme acoustique commandé électroniquement au moyen de capteurs mesurant sa fréquence de résonance

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1173708A (en) * 1915-09-23 1916-02-29 Henry M Chance Method for burning fuel.
SE412635B (sv) * 1977-02-17 1980-03-10 Enerus Erik Oscar Sett vid forbrenning av fasta, flytande eller gasformiga brenslen
EP0098949A1 (fr) * 1982-07-01 1984-01-25 Eppendorf Gerätebau Netheler + Hinz GmbH Procédé pour agiter un échantillon d'un liquide à analyser
WO1985002452A1 (fr) * 1983-12-02 1985-06-06 Insako Kb Procede et dispositif d'intensification par infrasons d'un lit incandescent
EP0251430A1 (fr) * 1986-04-01 1988-01-07 Hayashibara, Ken Dispositif de stimulations par vibration
EP0266485A2 (fr) * 1986-11-05 1988-05-11 ELECTRONSYSTEM S.p.A. Trompe électromagnétique avec excitation d'un diaphragme acoustique commandé électroniquement au moyen de capteurs mesurant sa fréquence de résonance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018080367A1 (fr) * 2016-10-31 2018-05-03 Mats Olsson Générateur d'infrasons pour améliorer la combustion de combustibles solides
US10974279B2 (en) 2016-10-31 2021-04-13 Infrasonik Ab Infrasound generator for enhancing the combustion of solid fuels
AU2017352005B2 (en) * 2016-10-31 2022-09-29 Mats Olsson An infrasound generator for enhancing the combustion of solid fuels

Also Published As

Publication number Publication date
JPH03505423A (ja) 1991-11-28
ES2014705A6 (es) 1990-07-16
DK290990A (da) 1990-12-19
FI906392A0 (fi) 1990-12-21
AU3844789A (en) 1990-01-23
DK290990D0 (da) 1990-12-06
SE8802451D0 (sv) 1988-06-29
SE461896B (sv) 1990-04-09
SE8802451L (sv) 1989-12-30
AU626894B2 (en) 1992-08-13
NZ229770A (en) 1991-08-27
CA1313980C (fr) 1993-03-02
EP0428533A1 (fr) 1991-05-29

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