EP3341932B1 - Maschine und verfahren zur erzeugung von akustischem weissem rauschen - Google Patents

Maschine und verfahren zur erzeugung von akustischem weissem rauschen Download PDF

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Publication number
EP3341932B1
EP3341932B1 EP16840149.5A EP16840149A EP3341932B1 EP 3341932 B1 EP3341932 B1 EP 3341932B1 EP 16840149 A EP16840149 A EP 16840149A EP 3341932 B1 EP3341932 B1 EP 3341932B1
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EP
European Patent Office
Prior art keywords
machine
housing
fan
openings
white noise
Prior art date
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Active
Application number
EP16840149.5A
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English (en)
French (fr)
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EP3341932A4 (de
EP3341932A2 (de
Inventor
Eli LAZAR
Matthew Snyder
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Snooz LLC
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Snooz LLC
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Priority claimed from PCT/US2016/048761 external-priority patent/WO2017035388A2/en
Publication of EP3341932A2 publication Critical patent/EP3341932A2/de
Publication of EP3341932A4 publication Critical patent/EP3341932A4/de
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    • 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
    • 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
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3049—Random noise used, e.g. in model identification

Definitions

  • the present invention is related generally to a method and machine for generating acoustic white noise. More specifically, the present invention provides a compact acoustic white noise generation mechanism which is convenient to control and can be calibrated to a specified sound level.
  • Currently available white noise machines can be categorized into one of two categories: digital or acoustic.
  • Digital white noise machines typically employ an audio speaker system to produce sound.
  • acoustic white noise machines typically produce sound by using a fan blade system to generate noise.
  • the existing design depends on increasing airflow speed to increase volume.
  • increased airflow speed also necessarily entails the increase of blade passing frequency and other undesirable phenomena which detrimentally impact sound quality. Therefore, this shortcoming also limits the potential volume range of the device.
  • Added to the limited volume range are the ineffective overlapping methods of controlling the levels of the noise volume produced by the device.
  • the prevailing design employs a combination of adjustable top vent holes and an outer rotating disk each operating independently to adjust the tone generated by the device. This arrangement results in a number of overlapping settings that are unnecessarily complicated and ineffective for accurately obtaining the desired tone.
  • US2014271286A1 discloses a noise producing fan with low air movement or variable air movement.
  • the device comprises a conventional mechanical fan that is adapted to provide a soothing and steady volume of ambient noise for a user to block out background noise and sleep comfortably.
  • the mechanical fan includes several embodiments, including different fan blade arrangements, means of interchanging fan blades on the mechanical fan hub, different fan shrouds that allow for access to the fan hub, and finally an imbalanced fan hub that creates an oscillatory motion to increase noise production.
  • the fan blades for low air movement and efficient noise generation are flat or perforated, and secure to the fan hub as it oscillates and rotates within the mechanical fan housing.
  • US2008273305A1 discloses a fan airflow-guiding device which matches a cooling fan.
  • One side of the cooling fan has an outlet.
  • the fan airflow-guiding device includes a frame and a plurality of airflow-guiding boards.
  • the frame is assembled on one side of the cooling fan.
  • the airflow-guiding boards are disposed on an outlet of the cooling fan in a predetermined direction and in parallel.
  • the airflow-guiding boards are pivoted in the frame, and its slanting angle is adjustable. Thereby, by adjusting the slanting angle of the airflow-guiding boards, the airflow exhausted from the cooling fan is guided to a predetermined location and the airflow direction of the cooling fan is adjusted.
  • US2003067779A1 discloses a ceiling fan device including a ceiling fan housing, a bracket for attaching to a ceiling of a building and having a socket and a projection extended inward of the socket, a downrod having a lower end secured to the ceiling fan housing and an upper end secured to a ball.
  • the ball includes two or more slots formed in the outer peripheral portion for selectively receiving the projection of the bracket and for adjusting the ball and the ceiling fan housing and the light device and the patterns of the fan housing relative to the bracket and the ceiling and the walls.
  • US2003098660A1 discloses an energy efficient low-power integral electronically commutated fan motor and control circuit assembly mounted on a circuit board for use in refrigerators utilizing a Hall sensor to provide positional control signals for sequential energization of the windings with the Hall sensor energization being pulsed, and the motor stator windings energized only during a portion of the period, when rotational torque produced by the energization is greatest in order to reduce the power input to the assembly.
  • Integrally molded multi-function components including the coil bobbin, ground pin, Hall sensor holder, motor bearing oil well covers, and assembly housing provide positioning, support, and securing assistance along with electrical and magnetic operative connections and positioning.
  • a capacitively coupled bridge power supply is provided to further reduce power consumption, and the motor is protected under fault and stall conditions by a current limiting circuit and a timed retry circuit, and the rotor and stator are designed for adequate starting torque in a refrigerator. Power is supplied to the motor windings through a voltage dropping capacitor connected in series therewith.
  • US2003151316A1 discloses a rotating electrical machine comprising at least one fan (43) provided with blades forming between them ventilation channels (48) which diverge and are suitable for producing a flow of cooling fluid through the machine; the angle of incidence (B) of the blades at the level of the leading edge is between 150° and 175°, while the angle of incidence (A) of the blades at the level of the trailing edge is between 90° and 165° relative to the tangent to a circle (C) generated during the rotation of the blades; the ratio of the mean pitch of the blades (46) to the mean length of the latter being less than 0.975.
  • US2015104159A1 discloses a heating and cooling apparatus providing hands free operation for heating and cooling a room and purifying the surrounding air.
  • Apparatus includes a fan, a housing for receiving the fan, and at least one heating element positioned between an outer edge of the fan and an inner surface of the housing.
  • Apparatus further includes system logic to control operation of a motor when a parameter, such as temperature or occupation of a room is detected.
  • Housing includes air purifying properties to reduce virus or bacteria in the air moving through the apparatus.
  • the present disclosure provides a machine for generating acoustic white noise as described in claim 1, and a method for controlling a machine for generating acoustic white noise as described in claim 13.
  • Advantageous features are provided in dependent claims.
  • the present invention is directed to a method of use and an apparatus that meets the abovementioned needs and addresses the faults noted above. Accordingly it is an object of the present invention to provide a compact, energy efficient, conveniently adjustable, and safe acoustic white noise machine which comprises a calibration feature as well as a lighting component.
  • Embodiments of the present invention are generally related to acoustic white noise machines.
  • embodiments of the present invention are directed to an acoustic white noise machine that comprises a fan blade designed to shear airflow against a sharp edge in order to create broadband turbulent noise.
  • Embodiments of the present invention may further include an adjustable enclosure that may be manipulated via the rotation or other movement of an outer shell to alter the amount of air being sheared by the fan blade, thereby changing the frequencies which resonate in the adjustable enclosure.
  • embodiments of the present invention comprise a plurality of overlapping openings in the main body and exterior portions thereof which, via movement relative to each other, allow for the precise adjustment of the airflow between the interior and exterior of the machine.
  • Further customization of user interaction with embodiments of the present invention is provided by the wireless communication means and control means on a remote mobile computing device configured to control the functions of the machine.
  • a safe volume calibration feature is provided to either automatically or manually adjust the volume of the white noise generated by the machine to a safe level.
  • components A, B, and C can consist of (i.e. contain only) components A, B, and C or can contain not only components A, B, and C but also one or more other components.
  • the defined steps can be carried out in any order or simultaneously (except where the context excludes that possibility), and the method can include one or more other steps which are carried out before any of the defined steps, between two of the defined steps, or after all the defined steps (except where the context exclude that possibility).
  • At least followed by a number is used here into the note the start of a range beginning with that number (which may be a range having an upper limit or no upper limit, depending on the variable being defined). For example, “at least one” means one or more than one.
  • the term “at most” followed by a number is used here into the note the end of a range ending with that number (which may be a range having 1 or 0 as its lower limit, or a range having no lower limit, depending upon the variable being defined). For example “at most 4" means four or less than 4, and "at most 40%” means 40% or less than 40%.
  • a range is given as "(a first number) to (a second number)" or "(a first number) - (a second number),” this means a range whose lower limit is the first number and whose upper limit is the second number.
  • 25 to 100 mm means a range whose lower limit is 25 mm, and whose upper limit is 100 mm.
  • Embodiments of the present invention are generally related to acoustic white noise machines.
  • embodiments of the present invention are directed to an acoustic white noise machine that comprises a fan blade designed to shear airflow against a sharp edge in order to create broadband turbulent noise.
  • Embodiments of the present invention may further include an adjustable enclosure that may be manipulated via the rotation or other movement of an outer shell to alter the amount of air being sheared by the fan blade, thereby changing the frequencies which resonate in the adjustable enclosure.
  • an acoustic white noise machine that utilizes a specialized fan blade to shear airflow against a sharp edge, which then creates broadband turbulent noise.
  • the broadband turbulent noise is then filtered through a tunable acoustic enclosure.
  • the tunable acoustic enclosure may be adjusted through rotation of an outer shell of the enclosure. Rotation of the outer shell opens and closes one or more vent holes in the enclosure, which varies the amount of air flow through enclosure, thereby changing the amount of air being sheared by the fan blade. This change in the amount of air being sheared by the fan blade changes frequencies of the broadband turbulent noise.
  • the acoustic white noise machine comprises an enclosure 102 with at least one rotatable outer shell section 104.
  • the rotatable outer shell is located on an upper portion 1514 of the enclosure. Rotation of this rotatable outer shell works to adjust the tone of the broadband turbulent noise generated by the acoustic white noise machine.
  • an acoustic white noise machine may further comprise an interactive element 106 for turning on and off power provided to the acoustic white noise machine.
  • the interactive element 106 for turning on and off power may be a push button.
  • the interactive element 106 for turning on and off power may include, but are not limited to, buttons, dials, knobs, touch sensitive components (e.g., capacitive touch sensor), communication means allowing for connection (e.g., BLUETOOTH, WIFI) to the acoustic white noise machine via a computing device 502 (e.g., tablet PC, smartphone), or any combination thereof.
  • a computing device 502 e.g., tablet PC, smartphone
  • an acoustic white noise machine may further comprise an adjustable volume component.
  • the adjustable volume component could be a precision volume dial 108, allowing for a user to vary the volume of the device by turning the dial.
  • the adjustable volume component may include, but are not limited to, dials, knobs, touch sensitive components, switches, levers, or communications means for allowing connection to the acoustic white noise machine via a computing device, or any combination thereof.
  • dials, knobs, touch sensitive components, switches, levers, or communications means for allowing connection to the acoustic white noise machine via a computing device, or any combination thereof.
  • an acoustic white noise machine may further comprise a power cord storage area.
  • the power cord storage area 302 may be comprised of a cavity formed in a lower region of the enclosure.
  • the power cord 304 storage area could be formed in other regions of the enclosure 102.
  • One of ordinary skill in the art would appreciate that there are numerous acceptable regions where the power cord storage area could be formed, and embodiments of the present invention are contemplated for use with any appropriate power cord storage area.
  • an acoustic white noise machine may further comprise a lighting element.
  • the lighting element 402 may be a nightlight formed from one or more light emitting diodes (LED) or other illumination source, situated beneath or around an exterior depression of a precision volume dial 108.
  • the lighting element 402 could be located in other areas on the enclosure 102, such as on a side of the enclosure, on a lower region 1504 of the enclosure or any combination thereof.
  • certain embodiments may include more than one lighting element in one or more locations on the enclosure.
  • One of ordinary skill in the art would appreciate that there are numerous acceptable regions where the lighting element could be located as well as numerous types of lighting elements that could be utilized, and embodiments of the present invention are contemplated for use with any appropriate lighting element and location for said lighting element(s).
  • an acoustic white noise machine may be configured to communicate with a remote computing device 502, such as a tablet PC, desktop PC, smartphone or other computing device.
  • the acoustic white noise machine may comprise a communications module that allows for communication with a remote computing device 502 via a Bluetooth, WIFI or other wireless communications protocol.
  • a wired connection could be utilized (e.g., USB).
  • communications modules that could be utilized with embodiments of the present invention, and embodiments of the present invention are contemplated for use with any appropriate type of communications module.
  • embodiments of the acoustic white noise machine may communicate with a remote computing device 502 in order to allow control/calibration of the acoustic white noise machine by the remote computing device.
  • a remote computing device 502 may connect to the acoustic noise machine in order to provide various functions, including, but not limited to, turning the machine on/off 504, setting a timer or schedule 508 for the acoustic white noise machine, altering the volume 506, calibrating 510 for use in a setting where particular noise levels are desired (e.g., nursery), turning on/off of the lighting element 512, or any combination thereof.
  • an application on a tablet PC or smartphone 502 may connect to the acoustic noise machine in order to provide various functions, including, but not limited to, turning the machine on/off 504, setting a timer or schedule 508 for the acoustic white noise machine, altering the volume 506, calibrating 510 for use in a setting where particular noise levels are desired (e.g., nursery), turning on/
  • an acoustic white noise machine may utilize a connection with a remote computing device 502 in order to calibrate volume levels of the machine for particular applications.
  • the acoustic white noise module may utilize a connection with the remote computing device 502 to calculate decibel levels at the location of the crib (e.g., via microphone integrated into a smartphone/tablet PC) and adjust the volume level of the machine accordingly to appropriate levels.
  • the adjustment could be done automatically by the acoustic white noise machine based on the detected decibel levels.
  • the adjustment could be processed on the remote computing device 502 and effected on the machine via editing of the volume levels.
  • an acoustic white noise machine utilizes a specialized fan 602 blade design that is configured to maximize potential frequencies while concurrently maximizing the potential to provide a compact enclosure 102.
  • the fan blade 604 is designed to wrap around a motor 608 that drives the fan blade 604. By reaching down and around the motor 608, the fan blade 604 provides a compact design while maximizing the volume of air above the fan blades 604. This increase in the volume of air above the fan blade 604 is important as it determines which frequencies will resonate in the enclosure 606.
  • FIGs. 7-8 multiple cross-sectional views of a preferred embodiment of an acoustic white noise machine are shown.
  • Figs. 7-8 show multiple features of the enclosure 606 and interior components and how they interact and work together to generate acoustic white noise.
  • Figs. 7-8 illustrate an enclosure 606 with top intake ports 702, exit vents 704, motor 608, motor insulation 706, fan blade 604, adjustment ring 710 and rubber feet 1502.
  • the top intake ports 702 are formed in a top portion 610 of the enclosure 606 to allow for the inflow of air to the fan 602.
  • Figs. 10-11 also show the top intake ports 702 in the enclosure 606 and how adjustment of the intake ports 702 may be accomplished in certain embodiments through a rotatable or otherwise adjustable top section 610 of the enclosure 606.
  • airflow is changed through the enclosure 606, thereby assisting in the change of frequencies of broadband white noise generated by the machine.
  • the exit vents 704 are optimized for pitch control and acoustic resonance and reduce external air disturbances.
  • exit vents 704 are comprised of one or more of a false step 712, a trailing edge 714 and a leading edge 716.
  • the false step 712 helps air directly impact the trailing edge 714 and works with the trailing 714 edge to generate a soft pitch.
  • the leading edge 716 generates a throaty pitch. Edge thickness is calibrated for optimal sound generation.
  • the edges of the exit vents 704 are angled in a way that mirrors the fan blade 604 angle so that propelled air collides with the exit edges all at once.
  • the adjustment ring 710 is configured to allow the adjustment of an enclosure portion 610 in relation to the exit vents 704 and changes the focus of circulated air between the leading edge(s) 716 and the trailing edge(s) 714 in order to change the pitch of the white noise generated.
  • the motor 608 is configured to drive the fan blade 604.
  • the motor 608 may be an efficient DC brushless motor.
  • the motor may 608 be selected from any type of motor capable of driving the fan blade 604 inside the enclosure 606.
  • motors 608 that could be utilized with embodiments of the present invention, and embodiments of the present invention are contemplated for use with any type of motor.
  • the motor insulation 706 is configured to minimize noise and vibrations caused by the motor 608.
  • the motor insulation 706 is provided by way of an insulated motor housing 702 around the motor 608 itself.
  • insulation may be applied to the outside of the motor in order to provide the desired effects.
  • Insulation 706 may be selected from any type of insulation that would be suitable for direct or indirect contact with the motor 608 or for use as housing for the motor.
  • motor insulations that could be utilized with embodiments of the present invention, and embodiments of the present invention are contemplated for use with any type of motor insulation.
  • one or more rubber feet 1502 may be utilized to eliminate surface vibration.
  • the feet 1502 may be made of other substances capable of reducing surface friction, including, but not limited to, silicone.
  • silicone One of ordinary skill in the art would appreciate that there are numerous materials that could be used for the feet 1502, and embodiments of the present invention are contemplated for use with any appropriate materials.
  • FIG. 9 several versions of a fan 602 are shown, in accordance with various embodiments of the present invention.
  • a first fan blade 910 is shown (left) that has been optimized for improved air flow while retaining its compact form.
  • a second fan blade 912 (center) is shown with slits 913 added to each blade arm 911 in order to increase turbulence and improve sound generation over the first fan blade 910.
  • a third fan blade 914 is shown (right) that shows a fan blade with outwardly bent tips 916 so shaped in order to spread airflow pulse past the exit vents 704 over a greater time duration, thereby lowering blade passing frequency intensity.
  • One of ordinary skill in the art would appreciate that certain embodiments of the present invention may utilize fan blades incorporating elements from any of these exemplary embodiments.
  • An inner design of the enclosure comprises two offset cylinders 1200, 1201.
  • a first edge 714 of the offset cylinder 1200 is used to force the airflow to move along the outer cylinder 1200 wall.
  • the airflow moving along the outer cylinder 1200 wall is then driven directly into the downstream edge 716 of the inner cylinder 1201.
  • Figs. 13A-13C, 14A-14D and 15A-15C show exemplary embodiments of a preferred embodiment of the present invention and options thereto.
  • Figs. 13A-13C show the upper portion 610 of the enclosure 606.
  • Figs. 14A-14D show various embodiments of exemplary fan blades 911, 914 for use inside the enclosure 606.
  • Figs. 15A-15C show various views of an exemplary embodiment of a lower portion 1504 of the enclosure.
  • FIG. 16 illustrates how a partial overlap of the orifices 1604 of the outer concentric component 1200 and the orifices 1606 of the inner concentric component 1201 combine to create holes 1602 in the wall 1500 of the housing. It further shows, for each opening 1602, the detailed construction of an upstream edge 716 and a downstream edge 714. There is a recessed lip 1612 created along the downstream edge 714 to allow airflow to line up with the upstream edge 716.
  • FIG. 17 likewise depicts an inner portion of the housing 1600 of an embodiment of the present invention but also shows a cutaway of an outer shell 1702 of the embodiment.
  • the outer shell contains multiple holes 1704 and is configured to rotate around the housing 1600.
  • solid portions 1706 thereof may cover the openings 1602 formed by the partially overlapping orifices 1604, 1606 of the abovementioned concentric components 1200, 1201 thereby changing the length and depth of the opening. Consequently, as the dimensions of the opening are changed, so do the sound pressure levels and acoustic frequencies produced by the embodiment of the invention.
  • FIGs. 18A-18C depict an impeller type rotor 1802 mounted on the motor 608 as well as a number of cavities 1602 within the wall 1500 of the housing 1600. While the central portion 1804 of the rotor 1802 is likewise domed partially around the motor 608 as in the fans of the embodiments described above, this embodiment comprises a combination of the disc shaped protrusion 1806 and the planar blade 1808 design.
  • the disk shaped protrusion 1806 being positioned in the plane of the rotor's 1802 rotation and the planar blades 1808 being perpendicular to both the plane and the axis of rotation cooperate to make the air moved within the housing 1600 directly strike the upstream edge 716 of the opening 1602.
  • FIGs.18D-18F show, external, exploded, and cross-sectional views of a similar embodiment of the present invention. Following the top cover 1810, fabric wrap 1812, combined housing 1600 and shell 1702, and rotor 1802 displayed in Fig. 18E are combined to result in the assembled embodiment depicted in Fig. 18D and 18F . Further, in Fig. 18E , one can see how the rotor 1802 is mounted on the motor 608 positioned on the axis of the bottom portion 1504 of the housing.
  • FIGs. 19A-19C An exemplary embodiment of the control means discussed above as well as of a first circuit board 1902 and second circuit board 1904 are shown in Figs. 19A-19C .
  • the control means 106 of the embodiment depicted comprise a touchpad with touch-sensitive areas corresponding to volume 1912, light 1914, and power 1916 controls respectively which through an electrical connection to one or both of the first circuit board 1902 and second circuit board 1904 enable a user of the embodiment to control its operation and adjust its operational settings.
  • a more detailed view of the shell 1702 and housing 1600 of an embodiment of the present invention is available in Fig. 19D .
  • the plurality of openings 1920 going through the top and the middle portions housing 1600 of the embodiment are visible as are the openings 1930 in the top and bottom portions of the outer shell 1702.
  • a user of a preferred embodiment of the invention can adjust the size of more than one opening in the machine simultaneously. This action can alter the amount of airflow sheared by the openings and the frequencies of sound which resonate within the machine.
  • a user's rotation of a rotatable component simultaneously adjusts the size of both the holes through which air enters the device and the holes through which it exits the device.
  • the intake ports 702 on the top portion 1504 and the openings in the housing 1600 of an embodiment of the invention are coupled with the openings in an outer element of the embodiment in such a manner that a displacement altering the position or dimensions of an intake port results in a corresponding adjustment of an opening. Therefore, the opening and closing of at least one of the cavities displaced circumferentially around the housing is coupled with the opening and closing of the intake ports allowing the user to adjust them simultaneously to control the volume and tone of the noise produced by the device.. Furthermore, the incorporation of the wireless communication means and a remote computing device 502 enables ability user to calibrate the sound level of a white noise machine.
  • the aforementioned wireless communication also allows a user to operate a white noise machine by wirelessly connecting the machine to communicate with a remote computing device 502 and then physically interacting with digital representations of control means 2002, 2004, 2006, 2008, 2010 (described below) produced by the remote computing device to perform an action selected from the following: turning the machine on/off, setting a timer or, altering the volume, calibrating to a predetermined noise level, turning a lighting element of the machine on/off, or any combination thereof.
  • a preferred embodiment of the present invention comprises an oblate housing 1600 comprising a top portion 1514 and a bottom portion 1504, with each of top portion 1514 and bottom portion 1504 having an inner surface and an outer surface, wherein said top portion 1514 and said bottom portion 1504 are configured to securely engage each other via an attachment means 1202 displaced along a rim of at least one of said top portion 1514 and said bottom portion 1504 to form a cavity defined by respective inner surfaces 1900 of said top portion 1514 and bottom 1504 portion; said housing further comprising a curved wall 1500, said wall 1500 comprising a cylindrical frame 1201 displaced concentrically within a cylindrical band 1200, said wall 1500 further comprising a plurality of openings 1602, wherein a rotational displacement of the band 1200 relative to the frame 1201 determines the dimensions of each of said openings 1602; a motor enclosure 1820 displaced within said housing 1600, said motor enclosure comprising a motor 608 secured therein, and said motor enclosure 1820 further configured with means to isolate noise and vibration 1822;
  • the frame 1201 and the band 1200 each respectively comprise a plurality of corresponding orifices 1604, 1606 configured to permit the passage of air between the interior and exterior of said housing 1600, while the openings 1602 of said wall 1500 are formed by a rotational displacement of said band 1200 relative to said frame 1201 offsetting each corresponding orifice 1604, 1606 with respect to one another to create an upstream edge 716 and a downstream edge 714 for each opening 1602, and wherein each of said openings 1602 comprise a recessed lip 1612 formed along the length of the downstream edge 714.
  • the top portion of said housing 1600 comprises a plurality of vents and the motor enclosure 1820 is preferentially disposed concentrically along a central vertical axis of said bottom portion 1504 of said oblate housing 1600 and therein the motor 608 comprises a rotatable mounting means 650 on which said fan 602 is mounted.
  • Each of the blades 604 in this embodiment radially projects from said concave central dome 1804 and each of said blades 604 is shaped concavely with a concavity corresponding in direction to a curvature of said top portion 1514 of said housing 1600.
  • embodiments of the invention may also have each of said blades 604 modified in any for the following manners independently or in combination with each other: having one or more slits 913 of various configurations and an outwardly bent tip 916.
  • the preferred embodiment's shell 1702 may comprise at least the same number of openings 1704 as said frame 1201 permitting the passage of air through said shell 1702 and the embodiment may further comprise a wireless communication means electrically connected to a circuit board with the wireless communication means configured to be communicatively coupled to a computing device 502 enabling the operation of said fan 602 to be controlled via said computing device 502.
  • Embodiments of the invention may also comprise at least one foot pad 1502 attached to said bottom portion 1504 of said housing 1600, said at least one foot pad 1502 creating a vibrationally dampening cushion between said housing 1600 and a surface on which said housing 1600 is placed, and they may further comprise a permeable elastic covering 1812 surrounding an outer surface of said shell 1702 to disperse airflow.
  • An example not related to the present invention comprises a concave enclosure 102 having an inner surface 1900 and an outer surface, said enclosure 102 comprising an upper portion 1514 and a lower portion 1504 affixed to each other along a cross-sectional perimeter of said enclosure 102; said enclosure further comprising a ceiling and a cylindrical wall 1500, wherein said wall 1500 comprises an outer cylinder 1200 comprising an inner surface and an outer surface and further comprises an inner cylinder 1201 positioned concentrically with said outer cylinder 1200 and in immediate contact with said inner surface of said outer cylinder 1200, where each of said ceiling and said wall 1500 further respectively comprise a plurality of openings 1602, wherein a rotational displacement of said cylinders 1200, 1201 relative to each other alters the size of more than one of said openings 1602; a vibrationally dampened drive module 1822 connected to said lower portion 1504 of said enclosure 102, said drive module 1822 comprising a motor 608 and configured with means to isolate motor noise; a rotor 1802 rotatably attached to said
  • the rotor of this embodiment comprises a disc shaped protrusion 1806 integrally fused to both of said central frame 1804 and said plurality of blades 1808, wherein said protrusion 1806 is coplanar with its plane of rotation and extends perpendicularly from a central vertical axis of said lower portion 1504 of said enclosure 102, and wherein each of said blades 1808 extend perpendicularly to said frame 1804 and said protrusion 1806.
  • the preferred embodiment of the invention also comprise a light emitting means 402 electrically connected to said circuit board 1904 and further comprising at least one foot pad 1502 attached to said lower portion 1504 of said enclosure 102, said at least one foot pad 1502 creating a vibrationally dampening cushion between said enclosure 102 and a surface on which said enclosure 102 is placed.
  • a porous flexible outer wrap 1812 envelops an exterior surface of said shell to disperse airflow and limit the draft of air exuding from the device, and a power cord storage compartment 302 is provided to house the power source 304 connection.
  • Figs. 20A-20D show different operational states of a GUI of a mobile computing device 502 configured to wirelessly control the operation of the components of a white noise machine in accordance with an embodiment of the present invention.
  • the GUI interface provides virtual representations of controls to adjust the volume 2002, to turn the machine on/off 2004, and to turn a light emitting element of the embodiment on/off 2006.
  • Fig. 20B controls for setting a timer 2008 for the operation of the embodiment of the invention are shown.
  • Controls for initiating a sound level calibration 2010 and the sound level measurement indicator 2012 are depicted in Figs. 20C and 20D respectively.
  • this embodiment of the invention provides a convenient way of remotely controlling and adjusting the operation of the white noise machine via a mobile computing device that is wirelessly connected to a wireless communication module of the circuit board.
  • a mobile computing device that is wirelessly connected to a wireless communication module of the circuit board.

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  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
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Claims (13)

  1. Maschine zur Erzeugung von akustischem weißem Rauschen, umfassend:
    ein abgeflachtes Gehäuse (1600), das einen oberen Abschnitt (1514) und einen unteren Abschnitt (1504) umfasst, wobei jeder davon eine Innenfläche und eine Außenfläche aufweist, wobei der obere Abschnitt und der untere Abschnitt konfiguriert sind, um einander über ein Anbringungsmittel (1202), das entlang eines Randes von zumindest einem von dem oberen Abschnitt und dem unteren Abschnitt verschoben wird, sicher in Eingriff zu nehmen, um einen Hohlraum zu bilden, der durch die Innenfläche (1900) des oberen Abschnittes und unteren Abschnittes definiert wird; wobei das Gehäuse ferner eine gebogene Wand (1500) umfasst, wobei die Wand einen zylindrischen Rahmen (1201) umfasst, der konzentrisch innerhalb eines zylindrischen Bandes (1200) verschoben wird, wobei die Wand ferner eine Vielzahl von Öffnungen (1602) umfasst, wobei eine Drehverschiebung des Bandes relativ zu dem Rahmen die Abmessungen von jeder der Öffnungen bestimmt;
    einen Motoreinschluss (1820), der innerhalb des Gehäuses verschoben wird, wobei der Motoreinschluss einen darin befestigten Motor (608) umfasst, und der Motoreinschluss ferner mit einem Mittel zum Isolieren von Rauschen und Vibration (1822) konfiguriert ist;
    einen Lüfter (602), der an dem Motor montiert ist, wobei der Lüfter eine konkave zentrale Wölbung (1804) umfasst und ferner eine Vielzahl von Schaufeln (604) umfasst, wobei die zentrale Wölbung geformt ist, um sich teilweise um den Motoreinschluss zu wickeln und jede der Schaufeln ein erstes Ende (630), das einstückig mit dem zylindrischen Rahmen verschmolzen ist, und ein zweites Ende umfasst, das eine Schaufelspitze (640) bildet;
    eine feste Schale (1702), die konfiguriert ist, um das Gehäuse einzuschließen, wobei die Schale drehbar mit dem Gehäuse verbunden ist, um die Größe von mehr als einer Öffnung aus der Vielzahl von Öffnungen (1602) in der Maschine simultan einzustellen, wodurch eines oder beides von der Menge an Luftfluss, die durch die Öffnungen (1602) abgeschert wird, und den Schallfrequenzen, die innerhalb der Maschine schwingen, verändert wird;
    eine Stromquelle (304) und eine Leiterplatte (1902), die elektrisch miteinander verbunden sind, wobei die Stromquelle und die Leiterplatte elektrisch mit dem Motor verbunden sind, um den Betrieb des Lüfters zu regulieren; und
    ein physisches Steuermittel (106), das an dem oberen Abschnitt angeordnet und ausgelegt ist, um manuelle Regulierung des Betriebes des Lüfters zu bewirken.
  2. Maschine nach Anspruch 1, wobei jedes von dem Rahmen (1201) und dem Band (1200) eine Vielzahl von entsprechenden Mündungsöffnungen (1604, 1606) umfasst, die konfiguriert ist, um den Durchlass von Luft zwischen dem Inneren und dem Äußeren des Gehäuses (1600) zu ermöglichen.
  3. Maschine nach Anspruch 2, wobei die Öffnungen (1602) der Wand durch eine Drehverschiebung des Bandes (1200) relativ zu dem Rahmen (1201) gebildet sind, wodurch jede entsprechende Mündungsöffnung in Bezug zueinander versetzt wird, um eine stromaufwärtige Kante (716) und eine stromabwärtige Kante (714) für jede Öffnung zu erzeugen, und wobei jede der Öffnungen eine ausgesparte Lippe (1612) umfasst, die entlang der Länge der stromabwärtigen Kante gebildet ist.
  4. Maschine nach Anspruch 1, wobei der obere Abschnitt (1514) des Gehäuses eine Vielzahl von Entlüftungen umfasst.
  5. Maschine nach Anspruch 1, wobei der Motoreinschluss (1820) konzentrisch entlang einer zentralen vertikalen Achse des unteren Abschnittes (1504) des abgeflachten Gehäuses angeordnet ist und wobei der Motor ein drehbares Montagemittel (650) umfasst, an dem der Lüfter montiert ist.
  6. Maschine nach Anspruch 1, wobei jede der Schaufeln (604) radial von der konkaven zentralen Wölbung (1804) vorsteht.
  7. Maschine nach Anspruch 1, wobei jede der Schaufeln (604) konkav mit einer Konkavität geformt ist, die in der Richtung einer Krümmung des oberen Abschnittes (1514) des Gehäuses entspricht.
  8. Maschine nach Anspruch 1, wobei jede der Schaufeln (604) eine Modifikation umfasst, die aus der Gruppe von zumindest einem Schlitz (913), einer nach außen gebogenen Spitze (916) und Kombinationen davon ausgewählt ist.
  9. Maschine nach Anspruch 1, wobei die Schale (1702) zumindest die gleiche Anzahl an Öffnungen wie der Rahmen (1201) umfasst, wodurch der Durchlass von Luft durch die Schale ermöglicht wird.
  10. Maschine nach Anspruch 1, ferner umfassend ein drahtloses Kommunikationsmittel, das elektrisch mit der Leiterplatte (1902) verbunden ist, wobei das drahtlose Kommunikationsmittel konfiguriert ist, um kommunikativ an eine Rechenvorrichtung (502) gekoppelt zu werden, wodurch ermöglicht wird, dass der Betrieb des Lüfters (602) über die Rechenvorrichtung gesteuert wird.
  11. Maschine nach Anspruch 1, ferner umfassend zumindest eine Fußmatte (1502), die an dem unteren Abschnitt (1504) des Gehäuses angebracht ist, wobei die zumindest eine Fußmatte eine vibrationsdämpfende Polsterung zwischen dem Gehäuse und einer Oberfläche erzeugt, auf der das Gehäuse platziert ist.
  12. Maschine nach Anspruch 1, ferner umfassend eine durchlässige elastische Abdeckung (1812), die eine Außenfläche der Schale (1702) umgibt, um Luftfluss zu zerstreuen.
  13. Verfahren zum Steuern der Maschine zur Erzeugung von akustischem weißem Rauschen nach Anspruch 1, wobei das Verfahren Folgendes umfasst:
    simultanes Einstellen der Größe von mehr als einer Öffnung aus der Vielzahl von Öffnungen (1602) in der Maschine, wodurch eines oder beides von der Menge an Luftfluss, die durch die Öffnungen (1602) abgeschert wird, und den Schallfrequenzen, die innerhalb der Maschine schwingen, verändert wird.
EP16840149.5A 2015-08-25 2016-08-25 Maschine und verfahren zur erzeugung von akustischem weissem rauschen Active EP3341932B1 (de)

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PCT/US2016/048761 WO2017035388A2 (en) 2015-08-25 2016-08-25 Machine and method for acoustic white noise generation

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CA2153650A1 (en) * 1994-07-12 1996-01-13 Vinay Mehta Remote control system for ceiling fan and light
US6045329A (en) * 1998-06-08 2000-04-04 Sobala; Randy Fan filter
FR2824201B1 (fr) * 2001-04-27 2003-08-01 Valeo Equip Electr Moteur Dispositif de ventilation pour machine electrique tournante
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AU2012236129A1 (en) * 2011-04-01 2013-11-14 Envision Strategy Group, Inc. Method and apparatus for independently varying airflow and noise generation of a fan
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