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WO2017042784A1 - Device and method for silencing noise acoustic waves - Google Patents

Device and method for silencing noise acoustic waves Download PDF

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Publication number
WO2017042784A1
WO2017042784A1 PCT/IB2016/056401 IB2016056401W WO2017042784A1 WO 2017042784 A1 WO2017042784 A1 WO 2017042784A1 IB 2016056401 W IB2016056401 W IB 2016056401W WO 2017042784 A1 WO2017042784 A1 WO 2017042784A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
noise
anode
cathode
acoustic waves
Prior art date
Application number
PCT/IB2016/056401
Other languages
French (fr)
Inventor
Carlos ROVETTO
Juan SALDAÑA
Elia CANO
Original Assignee
Universidad Tecnológica De Panamá
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 Universidad Tecnológica De Panamá filed Critical Universidad Tecnológica De Panamá
Publication of WO2017042784A1 publication Critical patent/WO2017042784A1/en

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
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/04—Sound-producing devices
    • G10K15/06—Sound-producing devices using electric discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • 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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention is encompassed within the field of silencer devices and, more specifically, devices used to reduce the noise emitted by a single source, such as for example an internal combustion engine.
  • the traditional method used to reduce noise from a single source uses air chambers to reduce or silence noise waves.
  • the present invention proposes an alternative solution that uses electrical or electronic elements to suppress the noise of acoustic waves.
  • the present invention discloses a device aimed at reducing the noise emitted by internal combustion engines using one or multiple electric arcs inside a chamber wherethrough the noise waves pass. This device may also be used to reduce other sources of noise if this device is adapted at the outlet of these sources of noise.
  • a noise must be understood as any unwanted noise that can interfere with the reception of a sound.
  • the fundamental basis of the device of the present invention is the use of the electric arc that is generated between a source (cathode) and a destination (anode) as a result of the movement of the electrons.
  • the device reduces the noise acoustic waves due to the fact that these waves are going to pass through a mesh of one or multiple electric arcs, which causes attenuation of the noise wave.
  • the proposed device can function in adverse weather conditions using electric arcs and, if used in an automobile, the electricity generated by the automobile itself can be used to generate the arcs.
  • the device can be disposed on the collector and can suppress the acoustic disturbances produced by the engine in stages.
  • the electric arcs can be generated using intertwined windings in order to increase input voltage up to a level wherein the electrons are attracted by the opposite voltage. This effect generates a nondestructive electric arc but capable of altering the acoustic sound wave generated by the source of noise.
  • a first aspect of the present invention relates to a noise acoustic wave silencer device.
  • the device comprises a pipe prepared to make noise acoustic waves circulate through its interior; a metal cathode located on the outer wall of the pipe; a metal anode located on the inner portion of the pipe; and a winding configured to increase the voltage of the cathode and generate, in the interior of the pipe, electric arcs that emerge from the cathode to hit on the node.
  • the anode is preferably a metal pipe.
  • the axis of the metal pipe of the anode may coincide with the axis of the pipe.
  • the anode is preferably subjected to a voltage that favours the attraction of the electric arc.
  • the winding may comprise a primary input winding and a secondary winding to increase the voltage. Both windings, primary and secondary, are preferably located in the interior of the outer wall of the pipe.
  • the pipe comprises a noise acoustic wave inlet and outlet, wherein the inlet is configured to be connected to the outlet of a source of noise.
  • the inlet is configured to be connected to an internal combustion engine, such that the noise acoustic waves are originated by the exhaust gases from said internal combustion engine.
  • a second aspect of the present invention relates to a method for silencing noise acoustic waves.
  • the method comprises making noise acoustic waves circulate through the interior of a pipe having a metal cathode on its outer wall and a metal anode on its inner portion; and increasing the voltage of the cathode to generate, in the interior of the pipe, electric arcs that emerge from the cathode to hit on the anode.
  • the method may also comprise subjecting the anode to a voltage that favours the attraction of the electric arc.
  • FIGURE 1 Shows a side view of the device
  • FIGURE 2 Shows a front view of the device.
  • the objective of the device of the present invention is to suppress the noise acoustic wave using electric arcs generated by a cathode and that hit on an anode, in the passage of noise acoustic waves, such as those generated by the exhaust gases from an internal combustion engine.
  • the present invention relates to a device based on one or multiple electric arcs to suppress the noise generated by a source of acoustic noise, such as an internal combustion engine or other similar source.
  • a source of acoustic noise such as an internal combustion engine or other similar source.
  • the suppression of the noise occurs while the exhaust gases flow though a mesh of electric arcs through one or multiple sections of the exhaust pipe.
  • the electric arcs create an alteration in the noise wave that reduces its strength and, therefore, suppresses the noise.
  • An external pipe which acts as a cathode, is in charge of generating the electric arcs.
  • the electric arcs generated in the cathode hit on the internal pipe, which acts as an anode.
  • the device uses windings to increase the initial voltage and excite the cathode so that the electrons jump, generating the electric arc inside the exhaust pipe.
  • the windings and cathode are preferably located on the outer part of the exhaust pipe, wherein the anode is located on the inner portion. These positions of the anode and cathode may, however, be inverted.
  • the free space between both pipes is where the air flows with the noise acoustic waves.
  • Figure 1 shows a side view of an embodiment of the silencer device, where the input 1 of exhaust gases can be observed, with their corresponding noise acoustic wave, into an exhaust pipe 2.
  • Electric arcs 4 that use windings (not shown in the figure) which increase the voltage are generated on the outer part or outer wall of the exhaust pipe, thereby acting as a cathode 3.
  • the electric arcs 4 generated emerge from the cathode 3, located on the outer wall of the exhaust pipe, to hit on the anode 5, which is located on the inner portion of the exhaust pipe.
  • Figure 2 illustrates a front view of the device wherein a diagram of the windings and the core whereon the electric arcs hit has been added.
  • a secondary winding 8 is in charge of increasing the voltage provided by a current input primary winding 9. Therefore, there is an electric arc-generating cathode through a primary winding 9 and a secondary winding 8, and an anode 5 or internal pipe that receives the electric arc and which has a polarity that attracts the electric arc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

A device and method for silencing noise acoustic waves generated by a source of noise, such as an internal combustion engine. The device comprises a pipe (2) prepared to make the noise acoustic waves circulate through its interior (6); a metal cathode (3) located on the outer wall of the pipe (2); a metal anode (5) located on the inner portion of the pipe (2); and a winding (8, 9) configured to increase the voltage of the cathode (3) and generate, in the interior (6) of the pipe, electric arcs (4) that emerge from the cathode (3) to hit on the anode (5). The device generates a non-destructive electric arc capable of silencing the acoustic sound wave generated by the source of noise.

Description

DEVICE AND METHOD FOR SILENCING NOISE ACOUSTIC WAVES
FIELD OF THE INVENTION
The present invention is encompassed within the field of silencer devices and, more specifically, devices used to reduce the noise emitted by a single source, such as for example an internal combustion engine.
BACKGROUND OF THE INVENTION
The traditional method used to reduce noise from a single source, such as an internal combustion engine, uses air chambers to reduce or silence noise waves. There is currently no approach to eliminating the noise of internal combustion engines other than by physical means, such as chambers and pipes or angles inside said chamber.
These techniques prevent gases from flowing directly to the exterior by adding a chamber that physically divides the acoustic waves into smaller waves, thereby reducing the noise. However, this chamber implies a bottleneck that generates an unnecessary resistance and load to the engine when it attempts to expel combustion exhaust gases.
Given the geographical, ecological and climatic characteristics and difficult access in many areas, such as non-urban zones, there are no mass alternatives other than that of using chambers to suppress the noise of internal combustion engines. Most mass production engines have a collector designed to collect the exhaust gas from two or more cylinders in a single pipe.
The documents of patent US20090308686-A1 and US20060076185-A1 disclose suppressors of noise acoustic waves in internal combustion engines, which are based on the use of physical elements to suppress noise acoustic waves.
However, the present invention proposes an alternative solution that uses electrical or electronic elements to suppress the noise of acoustic waves.
DESCRIPTION OF THE INVENTION
The present invention discloses a device aimed at reducing the noise emitted by internal combustion engines using one or multiple electric arcs inside a chamber wherethrough the noise waves pass. This device may also be used to reduce other sources of noise if this device is adapted at the outlet of these sources of noise.
A noise must be understood as any unwanted noise that can interfere with the reception of a sound. The fundamental basis of the device of the present invention is the use of the electric arc that is generated between a source (cathode) and a destination (anode) as a result of the movement of the electrons. The device reduces the noise acoustic waves due to the fact that these waves are going to pass through a mesh of one or multiple electric arcs, which causes attenuation of the noise wave.
Traditional methods for reducing noise using silencers with chambers generate physical resistance to the expulsion of gases; however, this resistance is reduced by the present invention due to the fact that an electric arc does not oppose resistance to the passage of gases.
Additionally, the proposed device can function in adverse weather conditions using electric arcs and, if used in an automobile, the electricity generated by the automobile itself can be used to generate the arcs. The device can be disposed on the collector and can suppress the acoustic disturbances produced by the engine in stages.
The introduction of new technologies using one or multiple electric arcs in the passage of gases expelled by the engine is a technique that makes it possible to modernise the traditional approach of silencers based on air chambers, pipes or angles in the interior of the chamber.
In the present device, the electric arcs can be generated using intertwined windings in order to increase input voltage up to a level wherein the electrons are attracted by the opposite voltage. This effect generates a nondestructive electric arc but capable of altering the acoustic sound wave generated by the source of noise.
A first aspect of the present invention relates to a noise acoustic wave silencer device. The device comprises a pipe prepared to make noise acoustic waves circulate through its interior; a metal cathode located on the outer wall of the pipe; a metal anode located on the inner portion of the pipe; and a winding configured to increase the voltage of the cathode and generate, in the interior of the pipe, electric arcs that emerge from the cathode to hit on the node.
The anode is preferably a metal pipe. The axis of the metal pipe of the anode may coincide with the axis of the pipe. The anode is preferably subjected to a voltage that favours the attraction of the electric arc.
The winding may comprise a primary input winding and a secondary winding to increase the voltage. Both windings, primary and secondary, are preferably located in the interior of the outer wall of the pipe.
The pipe comprises a noise acoustic wave inlet and outlet, wherein the inlet is configured to be connected to the outlet of a source of noise. In a preferred embodiment, the inlet is configured to be connected to an internal combustion engine, such that the noise acoustic waves are originated by the exhaust gases from said internal combustion engine.
A second aspect of the present invention relates to a method for silencing noise acoustic waves. The method comprises making noise acoustic waves circulate through the interior of a pipe having a metal cathode on its outer wall and a metal anode on its inner portion; and increasing the voltage of the cathode to generate, in the interior of the pipe, electric arcs that emerge from the cathode to hit on the anode. The method may also comprise subjecting the anode to a voltage that favours the attraction of the electric arc.
DESCRIPTION OF THE DRAWINGS
What follows is a brief description of a series of drawings that help to better understand the invention and which are expressly related to an embodiment of said invention presented as a non-limiting example thereof.
FIGURE 1 . Shows a side view of the device, and
FIGURE 2. Shows a front view of the device.
DETAILED DESCRIPTION OF THE INVENTION
The objective of the device of the present invention is to suppress the noise acoustic wave using electric arcs generated by a cathode and that hit on an anode, in the passage of noise acoustic waves, such as those generated by the exhaust gases from an internal combustion engine.
The present invention relates to a device based on one or multiple electric arcs to suppress the noise generated by a source of acoustic noise, such as an internal combustion engine or other similar source. The suppression of the noise occurs while the exhaust gases flow though a mesh of electric arcs through one or multiple sections of the exhaust pipe. The electric arcs create an alteration in the noise wave that reduces its strength and, therefore, suppresses the noise. An external pipe, which acts as a cathode, is in charge of generating the electric arcs. The electric arcs generated in the cathode hit on the internal pipe, which acts as an anode.
The device uses windings to increase the initial voltage and excite the cathode so that the electrons jump, generating the electric arc inside the exhaust pipe. For reasons of space, the windings and cathode are preferably located on the outer part of the exhaust pipe, wherein the anode is located on the inner portion. These positions of the anode and cathode may, however, be inverted. The free space between both pipes is where the air flows with the noise acoustic waves.
Figure 1 shows a side view of an embodiment of the silencer device, where the input 1 of exhaust gases can be observed, with their corresponding noise acoustic wave, into an exhaust pipe 2.
Electric arcs 4 that use windings (not shown in the figure) which increase the voltage are generated on the outer part or outer wall of the exhaust pipe, thereby acting as a cathode 3. The electric arcs 4 generated emerge from the cathode 3, located on the outer wall of the exhaust pipe, to hit on the anode 5, which is located on the inner portion of the exhaust pipe.
The exhaust gases from the internal combustion engine and their accompanying acoustic noise flow through the interior of the pipe 6, the free space existing between the external pipe (cathode 3) and the internal pipe (anode 5). Lastly, the output 7 of the exhaust gases with their corresponding noise acoustic wave are represented, the same noise acoustic wave of the input 1 of exhaust gases but reduced due to the effect of the electric arcs.
Figure 2 illustrates a front view of the device wherein a diagram of the windings and the core whereon the electric arcs hit has been added. A secondary winding 8 is in charge of increasing the voltage provided by a current input primary winding 9. Therefore, there is an electric arc-generating cathode through a primary winding 9 and a secondary winding 8, and an anode 5 or internal pipe that receives the electric arc and which has a polarity that attracts the electric arc.
For the sake of clarity, the electrical and electronic components used to generate an electric arc have been omitted from the drawing. Likewise, materials have not been indicated because this varies depending on the type of implementation performed. The actual dimension and/or shape of each of the components of the device may vary. Only the important details of the device are shown; however, the ordinary person skilled in the art may appreciate how the global device may be built, without undue experimentation.

Claims

1 . A noise acoustic wave silencer device, characterised in that it comprises: a pipe (2) prepared to make noise acoustic waves circulate through its interior; a metal cathode (3) located on the outer wall of the pipe (2); a metal anode (5) located on the inner portion of the pipe (2); a winding (8, 9) configured to increase the voltage of the cathode (3) and generate, in the interior (6) of the pipe, electric arcs (4) that emerge from the cathode (3) to hit on the anode (5).
2. The device, according to claim 1 , wherein the anode (5) is a metal pipe.
3. The device, according to claim 2, wherein the axis of the metal pipe of the anode (5) coincides with respect to the axis of the pipe (2).
4. The device, according to any of the preceding claims, wherein the anode (5) is subjected to a voltage to attract the electric arc (4).
5. The device, according to any of the preceding claims, wherein the winding comprises an input current primary winding (9) and a secondary winding (8) to increase the voltage.
6. The device, according to claim 5, wherein the primary winding (9) and the secondary winding (8) are located in the interior of the outer wall of the pipe (2).
7. The device, according to any of the preceding claims, wherein the pipe (2) comprises a noise acoustic wave inlet (1 ) and outlet (7).
8. The device, according to claim 7, wherein the inlet (1 ) is configured to be connected at the outlet of a source of noise.
9. The device, according to claim 8, wherein the inlet (1 ) is configured to be connected to an internal combustion engine, such that the noise acoustic waves are originated by the exhaust gases from said internal combustion engine.
10. A method for silencing noise acoustic waves, characterised in that it comprises: making noise acoustic waves circulate through the interior (6) of a pipe (2) having a metal cathode (3) on its outer wall and a metal anode (5) on its inner portion; increasing the voltage of the cathode (3) to generate, in the interior (6) of the pipe, electric arcs (4) that emerge from the cathode (3) to hit on the anode (5).
1 1 . The method, according to claim 10, which comprises subjecting the anode (5) to a voltage to attract the electric arc (4).
PCT/IB2016/056401 2016-07-20 2016-10-25 Device and method for silencing noise acoustic waves WO2017042784A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PA9125201 2016-07-20
PA91252 2016-07-20

Publications (1)

Publication Number Publication Date
WO2017042784A1 true WO2017042784A1 (en) 2017-03-16

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058702A (en) * 1987-10-12 1991-10-22 Mascioli Alessandro Silencer device for exhausts of motors and similar, with acoustic interference
US6279617B1 (en) * 1997-11-17 2001-08-28 Aker Offshore Partner As Corrosion-protected metal construction in the form of a pipeline
DE102006022559A1 (en) * 2006-05-15 2007-11-22 Alexander Rubinraut Electrical jet propulsion for space craft, has superconducting coil produced for increasing value of magnetic field in working chamber, and hollow cylinder provided with coil in container for lowering evaporation of cryogen fluid

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058702A (en) * 1987-10-12 1991-10-22 Mascioli Alessandro Silencer device for exhausts of motors and similar, with acoustic interference
US6279617B1 (en) * 1997-11-17 2001-08-28 Aker Offshore Partner As Corrosion-protected metal construction in the form of a pipeline
DE102006022559A1 (en) * 2006-05-15 2007-11-22 Alexander Rubinraut Electrical jet propulsion for space craft, has superconducting coil produced for increasing value of magnetic field in working chamber, and hollow cylinder provided with coil in container for lowering evaporation of cryogen fluid

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