Speaker fan system and method

Abstract

A ventilation assembly includes a main housing comprising a first housing wall and a second housing wall, a fan assembly disposed within the main housing, the fan assembly including a fan, and an acoustic device disposed between said first and second housing walls, the acoustic device having a first distal portion, a second distal portion and an intermediate portion extending between the first distal portion and the second distal portion, the first distal portion being relatively wider than the intermediate portion.

Claims

1. A ventilation assembly, comprising: a main housing comprising a first housing wall and a second housing wall; a fan assembly disposed within the main housing, the fan assembly including a fan; and an acoustic device comprising an acoustic device housing having a first distal portion, a second distal portion and an intermediate portion extending between the first distal portion and the second distal portion and connecting the first distal portion to the second distal portion, the first distal portion being wider than the intermediate portion and the second distal portion being wider than the intermediate portion such that the acoustic device defines a generally U-shaped configuration; wherein the acoustic device is configured to be disposed between said first and second housing walls and adjacent to a fan opening such that the intermediate portion of the acoustic device housing is disposed adjacent to the fan opening and the first and second distal portions of the acoustic device housing are disposed to extend partially around opposing sides of the fan opening such that the acoustic device housing does not block the fan opening.

2. The ventilation assembly of claim 1, the acoustic device housing being U shaped.

3. The ventilation assembly of claim 1, the first distal portion comprising a diaphragm.

4. The ventilation assembly of claim 1, the second distal portion comprising a diaphragm.

5. The ventilation assembly of claim 1, the first and second housing walls defining a corner of the main housing and the first distal portion being disposed substantially at the corner of the main housing.

6. The ventilation assembly of claim 1, the first and second housing walls defining a corner of the main housing and the first distal portion comprising a diaphragm being disposed substantially at the corner of the main housing.

7. The ventilation assembly of claim 1, the main housing comprising a third housing wall wherein the first and second housing walls define a first corner of the main housing and the second and third housing walls define a second corner of the main housing, the first distal portion being disposed substantially at the first corner of the main housing and the second distal portion being disposed substantially at the second corner of the main housing.

8. The ventilation assembly of claim 1, the main housing comprising a third housing wall wherein the first and second housing walls define a first corner of the main housing and the second and third housing walls define a second corner of the main housing, the first distal portion comprising a first diaphragm being disposed substantially at the first corner of the main housing and the second distal portion comprising a second diaphragm being disposed substantially at the second corner of the main housing.

9. The ventilation assembly of claim 1, the acoustic device housing defining a first surface, a second surface, a rear surface and an intermediate surface, the first surface being disposed on the first distal portion, the second surface being disposed on the second distal portion and the intermediate surface being formed on the intermediate portion, wherein a first distance is defined between the rear surface and the intermediate surface, a second distance is defined between the rear surface and the first surface, and a third distance is defined between the rear surface and the second surface, the second distance and the third distance each being greater than the first distance.

10. The ventilation assembly of claim 1, wherein the fan opening is defined by a motor mount plate.

11. The ventilation assembly of claim 10, wherein the acoustic device is secured to the motor mount plate.

12. The ventilation assembly of claim 11, the acoustic device being positioned radially outwardly of the fan of the fan opening assembly.

13. A ventilation assembly, comprising: a main housing comprising a first housing wall and a second housing wall; a fan assembly disposed within the main housing, the fan assembly including a fan; a motor mount plate between the first housing wall and the second housing wall, a fan opening defined in the motor mount plate; and an acoustic device comprising an acoustic device housing having a first distal portion, a second distal portion and an intermediate portion extending between the first distal portion and the second distal portion and connecting the first distal portion to the second distal portion, the first distal portion being wider than the intermediate portion and the second distal portion being wider than the intermediate portion such that the acoustic device defines a generally U-shaped configuration; wherein the intermediate portion of the acoustic device housing is disposed adjacent to the fan opening and the first and second distal portions of the acoustic device housing are disposed to extend partially around opposing sides of the fan opening such that the acoustic device housing does not block the fan opening.

14. The ventilation assembly of claim 13, wherein the acoustic device is disposed on the motor mount plate.

15. The ventilation assembly of claim 13, wherein the acoustic device is secured to the motor mount plate.

16. A ventilation assembly, comprising: a main housing comprising a first housing wall and a second housing wall; a fan assembly disposed within the main housing, the fan assembly including a fan; and an acoustic device comprising an acoustic device housing having a first distal portion, a second distal portion and an intermediate portion extending between the first distal portion and the second distal portion and connecting the first distal portion to the second distal portion, the acoustic device defining a generally U-shaped configuration; wherein the acoustic device is configured to be disposed adjacent to a fan opening disposed between the first and second housing walls such that the intermediate portion of the acoustic device housing is disposed adjacent to the fan opening and the first and second distal portions of the acoustic device housing are disposed to extend partially around opposing sides of the fan opening such that the acoustic device housing does not block the fan opening.

17. The ventilation assembly of claim 16, wherein the fan opening is defined in a motor mount plate disposed between the first housing wall and the second housing wall.

18. The ventilation assembly of claim 17, wherein the acoustic device is disposed on the motor mount plate.

19. The ventilation assembly of claim 17, wherein the acoustic device is secured to the motor mount plate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. Like numerals having different letter suffixes may represent different instances of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed in the present document.

(2) FIG. 1 is an exploded view of a ventilation assembly according to an example of the present disclosure.

(3) FIG. 2 is a perspective view of a fan speaker assembly according to an example of the present disclosure.

(4) FIG. 3A is a top perspective view of a fan speaker assembly with attached accessory assembly according to an example of the present disclosure.

(5) FIG. 3B is a front view of a fan speaker assembly with attached accessory assembly according to an example of the present disclosure.

(6) FIG. 4 is a perspective view of an accessory component according to an example of the present disclosure.

(7) FIG. 5A are perspective views of an exhaust fan assembly including an accessory mount according to an example of the present disclosure.

(8) FIG. 5B is a top view of an exhaust fan assembly including an accessory mount according to an example of the present disclosure.

(9) FIG. 6A is a side view of an exhaust fan assembly including an accessory mount for an accessory assembly according to an example of the present disclosure.

(10) FIG. 6B is a side view of an exhaust fan assembly including an accessory mount coupled to an accessory component according to an example of the present disclosure.

(11) FIG. 7A to 7B are perspective views of an accessory mount according to an example of the present disclosure.

(12) FIG. 7C is a side-side view of an accessory mount according to an example of the present disclosure.

(13) FIG. 8A is a perspective view of a positioning mount according to an example of the present disclosure.

(14) FIG. 8B is a side view of a positioning mount according to an example of the present disclosure.

(15) FIG. 8C is a front view of a positioning mount according to an example of the present disclosure.

(16) FIGS. 9A to 9B are perspective views of the accessory mount depicted in FIGS. 7A to 7C coupled to the bottom edge of the accessory component depicted in FIG. 4 according to an example of the present disclosure.

(17) FIG. 9C is a partial perspective view of the accessory mount depicted in FIGS. 7A to 7C coupled to the fan assembly of the ventilation assembly shown in FIGS. 3A to 3B according to an example of the present disclosure.

(18) FIG. 9D is a partial perspective view of the accessory mount depicted in FIGS. 7A to 7C coupled to the exhaust fan assembly of the ventilation assembly shown in FIGS. 2 and 3A to 3B without the speaker assembly according to an example of the present disclosure.

(19) FIG. 10 is a perspective view of a fan assembly according to an example of the present disclosure.

(20) FIGS. 11A to 11B are perspective views of a fan assembly coupled to an accessory assembly according to an example of the present disclosure.

(21) FIG. 12A is a front partial perspective view of an accessory assembly coupled to a fan assembly according to an example of the present disclosure.

(22) FIG. 12B is a top perspective view of a ventilation assembly according to an example of the present disclosure.

DETAILED DESCRIPTION

(23) As depicted in FIG. 1, a ventilation assembly 20, according to an example, can include a fan assembly 22 and a main housing 24. The main housing 24 can be mounted within an aperture in a wall or ceiling to a joist or other structure in the wall or ceiling. The main housing 24 can define an interior space and can include at least an inlet opening 26 aligned with the aperture in the wall or ceiling and an outlet opening 28. The fan assembly 22 can be positioned within the interior space defined by the main housing 24. The fan assembly 22 can include a fan 30 operable to create an inlet airflow through the aperture and inlet opening 26 into the interior space and an outlet airflow through the outlet opening 28 out of the interior space. The ventilation assembly 20 can be positioned within the wall or ceiling such that operating the fan 30 draws air through the aperture and inlet opening 26 from a first space and expelling the air through the outlet opening 28 to another space. In at least one example, the outlet opening 28 can be aligned with a second aperture or operably connected to ductwork to conduct the expelled air to a desired space.

(24) In at least one example, the fan assembly 22 can be releasably mounted to the main housing 24 such that the fan assembly 22 can be removed from the main housing 24 through the inlet opening 26 without removing the main housing 24 from the wall, ceiling or other building structure. In certain situations, it can be desirable to replace a damaged fan assembly 22 or replace the existing fan assembly 22 with a fan assembly 22 having improved or different operating parameters to retrofit the ventilation assembly 20.

(25) In at least one example, the fan assembly 22 can also be configured to releasably engage an accessory assembly 46 to provide added functionality to the ventilation assembly 20 including, but not limited to additional lighting, sound producing elements, air quality monitoring and other features. The accessory assembly 46 is releasably mounted to the fan assembly 22 such that the accessory assembly 46 can be disengaged from the fan assembly 22 while the fan assembly 22 is mounted within the main housing 24. The accessory assembly 46 can also be removed from the main housing 24 with the fan assembly 22 when the fan assembly 22 is disengaged from the main housing 24 and removed through the inlet opening 26 with the fan assembly 22. The accessory assembly 46 can be mounted as a new accessory component 50 or replace an existing accessory component 50. The fan assembly 22 can be installed within the main housing 24 with the accessory assembly 46 pre-mounted (i.e., at a factory during assembly of the ventilation assembly 20 or at an installation site just prior to or after installation of the main housing 24. The modular configuration of the ventilation assembly 20 permits installation or replacement of the fan assembly 22 or accessory assembly 46 through the aperture and inlet opening 26 and without removal and reinstallation of the main housing 24, which can cause damage to the wall or ceiling and associated support structure.

(26) The replacement fan assembly 22 and/or accessory can be an upgrade (i.e., as a retrofit) to the ventilation assembly 20 that would normally not include an accessory. Similarly, the fan assembly 22 or accessories can be removed and replaced without disconnecting the main housing 24 from attached ductwork.

(27) As depicted in FIG. 1, in an example, the main housing 24 includes the housing wall 32 defining the interior space within the main housing 24. The housing wall 32 can further define the inlet opening 26 and the outlet opening 28. The main housing 24 can be configured to house and mount structure for at least a portion of the various components and devices of the ventilation assembly 20. The main housing 24 can comprise a plurality of shapes corresponding to the size and shape of the components and devices to be housed and the available space within the wall or ceiling. The main housing 24 can have shapes including, but not limited to, a rectangular box-like shape, an oval shape, a hemispherical shape, a spherical shape, a pyramidal shape, or any other shape. The main housing 24 can include materials suitable for supporting the weight of the fan assembly 22 and accessories and receiving fasteners for securing the main housing 24 to a wall or ceiling joint or other structure. The main housing 24 can comprise, but is not limited to, an aluminum-based metal, a steal or iron-based metal, a zinc-based metal, or a nickel and tin-based metal, injected molded polymers, thermo-formed polymers, thermosetting polymers, wood, particle-board, wood laminate, composite materials or combination of materials.

(28) As depicted in FIGS. 2 and 3A-3B, in an example, the fan assembly 22 can include a fan 30, a fan mount 45 and a motor mount plate 42. The motor mount plate 42 can include a fan opening 44. The fan mount 45 can receive at least one fastener to mount the fan 30 to the motor mount plate 42 such that position the fan 30 within the fan opening 44. In at least one example, the fan 30 can comprise a centrifugal fan having a motor for rotating a blower wheel to draw air through the fan opening 44. In at least one example, the fan mount 45 can be substantially linear as depicted in FIG. 2. In at least one example, the fan mount 45 can be substantially arched as depicted in FIGS. 3A-3B. The blower wheel can be mechanically coupled to the motor using a main drive bolt. The fan 30 can comprise other conventional fans for drawing air and other gases through the fan opening 44. In at least one example, the motor mount plate 42 can include an electrical port 48 through which wires can be threaded past the motor mount plate 42.

(29) As depicted in FIGS. 4, 5A-5B and 6A-6B, an accessory assembly 46 can include an accessory component 50 and an accessory mount 52. In at least one example, the accessory component 50 can include an acoustic device 47 having an acoustic device housing 49 and at least one sound emitting device. The sound emitting device can include at least one loudspeaker (i.e., the housing and each sound emitting device is formed or coupled as a single unit and functional integral as a monolithic structure to emit sound). The acoustic device can be formed into any shape, but generally is shaped to provide a desirable acoustic response without blocking fan opening 44. In at least one example, each loudspeaker can include a flexible, but semi-rigid membrane, or diaphragm 34, 35, attached to an electromagnetic coil. A current passed through the coil can cause the semi-rigid membrane, or diaphragm 34, 35, to at least partially move in the magnetic gap, thereby vibrating the diaphragm 34, 35, and producing sound waves, or an acoustic flow.

(30) As depicted in FIGS. 7A-7C and 8A-8C, in an example, the fan assembly 22 can also include a positioning mount 54 corresponding to the accessory mount 52 to releasably secure the accessory component 50 to the fan assembly 22. In an example, the accessory mount 52 can include at least one hook element 56 and a tab portion 59. The positioning mount 54 can include a receptacle 58 corresponding to each hook element 56. The hook element 56 can be inserted into the receptacle 58 to position the accessory component 50 on the motor mount plate 42 as illustrated in FIG. 6A. In at least one example, the receptacle 58 can be angled away from the body of the motor mount plate 42 to complement the sloping angle of the motor mount plate 42 as illustrated in FIG. 7A. In an example, the hook element 56 is oriented such that the tab portion 59 is generally parallel to the motor mount plate 42. A fastener can then be subsequently inserted through the tab portion 59 to fix the accessory component 50 to the fan assembly 22 as illustrated in FIG. 12A. In at least one example, the accessory mount 52 can be mounted to the positioning mount 54 prior to attachment of the accessory component 50 as illustrated in FIGS. 6A-6B. In at least one example, the accessory component 50 can be mounted to the accessory mount 52 prior to attachment of the accessory mount 52 to the positioning mount 54 as illustrated in FIGS. 9A-9B. In at least one example, the accessory component 50 is angled to insert the hook element 56 into the receptacle 58 and rotated to secure the accessory component 50 to the motor mount plate 42 as illustrated in FIG. 7C. In at least one example, the accessory component 50 can be positioned on the motor mount plate 42 such that the accessory component 50 is positioned away from moving components such as the fan 30.

(31) In at least one example, the accessory component 50 can be shaped to form a compact and desirable acoustic flow towards the inlet opening 26 when mounted to the motor mount plate 42. The accessory component 50 can be coupled to the motor mount plate 42 such that the accessory component 50 and the motor mount plate 42 are resonantly coupled. The sound emitting device can be formed from any material that is readily shaped, including, but not limited to polymers, polymer-composites, metals, paper composites or fiber-based composites. In at least one example, injection-molded or thermo-formed polymeric materials can be molded to form functional components into the housing of the sound emitting device. The sound emitting device can include a resin treated cloth, fabric or non-woven material. In at least one example, the sound emitting device can include polymeric foams or thermoplastic elastomers over-molded onto the body of the diaphragm. The diaphragm can be integrally formed into the surrounding sound emitting device.

(32) As depicted in FIGS. 1 and 12B, the ventilation assembly 20 can include an electrical box having a power receptacle 62. The power receptacle 62 can be connected to an external power source such as the power supply for the building or structure. The power receptacle 62 can include at least one terminal to which the fan 30 or accessory component 50 can be connected to supply power to the fan 30 or accessory component 50. The accessory component 50 can be mounted on the motor mount plate 42 opposite from the power receptacle 62. The arrangement increases the electromagnetic and acoustic isolation between the accessory component 50 and the power receptacle 62. In at least one example, the motor mount plate 42 can include an electrical port 48 for interfacing with the power receptacle 62. The edges of the electrical port 48 can engage the power receptacle 62 to prevent the flow of fluid through the electrical port 48. In at least one example, each terminal can be oriented to be accessible through the electrical port 48 while the power receptacle 62 prevents air flow through the electrical port 48. In at least one example, a permanent split capacitor can be mounted to a surface of a structure of the building adjacent to the ventilation assembly 20 and electrically coupled to the speaker fan assembly with a motor power harness.

(33) In an example, the accessory component 50 can include an electrical circuit that is electrically coupled to the sound emitting device. In some embodiments, the electrical circuit includes at least one switch capable of switching power to or off the speaker assembly. In some embodiments, the sound emitting device can be powered when a user powers the fan 30 (i.e., when the user switches power to the fan assembly 22 for ventilation, the accessory component 50 can also be powered). In some other embodiments, the accessory component 50 can include a power supply that is independent of the electrical box coupled to the main housing 24.

(34) In an example, the accessory component 50 can include a wireless receiver. The accessory component 50 can include a wireless receiver or transceiver, including, but not limited to a Bluetooth transceiver or a WiFi receiver or transceiver. In at least one example, the accessory component 50 can include a wireless receiver or transceiver capable of responding to a two-way radio RF signal, a UHF or VHF signal (such as a citizen's band radio signal or other radio signal emitted from a walkie talkie type device), and a near-field wireless signal. Bluetooth is a registered trademark of Bluetooth SIG, Inc. In at least one example, the accessory component 50 can include a wireless receiver capable of responding to a zero generation wireless signal, a first generation wireless signal, a second generation wireless signal, a third generation wireless signal, a fourth generation wireless signal, or a fifth generation wireless signal.

(35) In an example, the wireless receiver can be powered when a user powers the fan 30 (i.e., when the user switches power to the fan assembly 22 for ventilation, the sound emitting device and the wireless receiver can also be powered). In at least one example, an acoustic member (such as at least one diaphragm) of the sound emitting device can emit sound based at least on a wireless signal received by the accessory component 50. In at least one example, sound (such as music or speech) can be encoded by a user's wireless device that emits a wireless signal that is capable of being received and decoded by the wireless receiver within the fan speaker assembly and at least partially reproduced by the sound emitting device of the accessory component 50. In some embodiments, a user may program a wireless device to transmit a wireless signal to the accessory component 50. In some embodiments, the accessory component 50 can be a wireless receiver that accepts any signal sent by a user from a wireless device.

(36) In at least one example, the accessory component 50 may be wirelessly controlled. For example, in an example, the accessory component 50 may be encoded by a user's wireless device that emits a wireless signal that is capable of being received and decoded by the wireless receiver within the fan speaker assembly to at least partially control at least one function of the speaker assembly and/or the fan speaker assembly.

(37) In an example, the main housing 24 is configured to be positioned within an aperture in a wall, ceiling or other building structure in a partially, or fully recessed position. In at least one example, the inlet opening 26 can be sized to correspond to the size and shape of the aperture in the wall, ceiling or other building structure. The main housing 24 can include a grille 34 having a fastener 36 for securing the grille 34 to the housing wall 32 over the inlet opening 26 to conceal the inlet opening 26 and restrict access to the interior space. The fastener 36 can be configured to be released and disengage the grille 34 from the main housing 24 to permit access to the interior space through the inlet opening 26. The housing wall 32 can be configured to receive at least one fastener to secure the main housing 24 to joists or other building support structure.

(38) As depicted in FIG. 1, in an example, the housing wall 32 can include a duct connector assembly 38 at the outlet opening 28 for operably connecting the outlet opening 28 to a ventilation duct of a building. In certain examples, the duct connector assembly 38 can be pre-installed in a building structure in with the existing ductwork and the attached to the housing wall 32 when the housing wall 32 is mounted within the wall or ceiling. In certain examples, the main housing 24 is firstly installed in an existing cavity or aperture of a structure and the duct connector assembly is subsequently installed by connecting a ventilation duct of the ductwork with the outlet opening 28 of the main housing 24.

(39) As depicted in FIG. 12B, in an example, the fan assembly 22 can be positioned within the interior space of the main housing 24. The motor mount plate 42 can be engaged to the housing wall 32. In at least one example, the motor mount plate 42 can further include a releasable mount 60 for releasably engaging the motor mount plate 42 to the housing wall 32. The releasable mount 60 can be configured to receive a removable fastener that can be inserted to engage the fan assembly 22 to the main housing 24 or removed to release the fan assembly 22 from the main housing 24. In at least one example, the releasable mount 60 can include a flexible tab that can be releasably engaged into a corresponding receptacle in the housing wall 32. In at least one example, the tab can be used to initially position the fan assembly 22 within the main housing 24 until the fastener can be inserted through the releasable mount 60 as depicted in FIG. 10. The fan assembly 22 can be removed from the main housing 24 by removing the fastener and replaced or swapped with another fan assembly 22. In at least one example, the main housing 24 can be mounted within the ceiling, wall or other building structure with the fan assembly 22 pre-installed. In at least one example, the main housing 24 can be mounted within the ceiling, wall or other building structure and the fan assembly 22 can than subsequently be installed by inserting the fan assembly 22 through the aperture and the inlet opening 26. In at least this example, the inlet opening 26 can be sized to correspond to the dimensions of the housing wall 32 to receive the fan assembly 22 through the inlet opening 26.

(40) As depicted in FIGS. 6A-6B and 11A-11B, in an example, the accessory component 50 can be mounted to the motor mount plate 42 by initially engaging the accessory mount 52 to the positioning mount 54 and subsequently inserting a fastener through the tabbed portion 58. In at least one example, the accessory component 50 can be mounted to the fan assembly 22 prior to installation of the fan assembly within the main housing 24. In at least one example, the fan assembly 22 can be pre-installed within the main housing 24 or installed after the main housing 24 is mounted within the aperture of the ceiling or wall. In at least this example, the accessory component 50 can be inserted through the aperture and inlet opening 26. The accessory component 50 can then be engaged to the motor mount plate 42 in situ via the component mount 52 and positioning mount 54. The engagement of the hook element 56 to the receptacle 58 retains the accessory component 50 in place on the motor mount plate 42 until the fastener is inserted through the tab portion 59 to fix the accessory component 50. In at least one example, a mounted accessory component 50 can be replaced or swapped with a different accessory component. The fastener can be removed from the tab portion 59 and the accessory component 50 pivoted to disengage the hook element 56 from the receptacle 58 such that the accessory component 50 can be un-mounted from the fan assembly 22.

(41) In an example, the motor mount plate 42 can be positioned to operate as a partition separating the inlet opening 26 and outlet opening 28, wherein the fan opening 44 defines a fluid path between the inlet opening 26 and the outlet opening 28. In operation, the fan 30 is operable to draw a fluid, such as air and other gases, through the inlet opening 26 and the fan opening 44 and expelling the fluid out the outlet opening 28. The fluid can comprise, but is not limited to, air, other gases, vapor or combinations thereof. In at least one example, the fluid can comprise a smoke, ash, or other particulate in addition to air or other gases. In at least one example, the main housing 24 can include at least one damper flap positioned at the outlet opening 28. The damper flap can control the backflow of a fluid into the interior space through the outlet opening 28.

(42) In at least one example, the main housing 24 can include a scroll element for directing air from the blower wheel into the outlet opening 28. The scroll element can comprise a readily shaped material including, but not limited to polymers, polymer-composites, metals, ceramics, wood, paper-based composite or laminate. Functional components can be molded or shaped into the scroll element to improve direction of fluids into the outlet opening 28. In at least one example, the housing wall 32 can be shaped to operate as a scroll element for directing the fluid through the outlet opening 28.

(43) In an example, the ventilation assembly 20 can be used to ventilate any room, area or space. In at least one example, the ventilation assembly 20 can be secured within an intermediate space, outside of the room, area or space, and coupled with one or more ventilation duct assemblies to provide ventilation to the room, area or space.

(44) In an example, a method for installing a ventilation assembly 20 can include providing a main housing 24 having a housing wall 32 defining an interior space and an inlet opening 26 for accessing the interior space. The method can also include providing a fan assembly 22 including a fan 30 mounted to a motor mount plate 42, the motor mount plate 42 can include a releasable mount 60. The method can include positioning the main housing 24 within an aperture in a building structure, wherein main housing 24 is oriented such that the inlet opening 26 faces the aperture. The method includes inserting the fan assembly 22 through the inlet opening 26 such that the motor mount plate 42 engages the housing wall 32. In at least one example, the fan assembly 22 is inserted into the main housing 24 prior to positioning of the main housing 24 within the aperture in the building structure. In at least one example, the fan assembly 22 is inserted into the main housing 24 after the positioning of the main housing 24 within the aperture in the building structure, wherein the fan assembly 22 is inserted through the aperture and the inlet opening 26 into the interior space.

(45) As depicted in FIGS. 6A-6B, the method can further include providing an accessory component 50 having an accessory mount 52. The motor mount plate 42 can include a positioning mount 54. The method can further include releasably engaging the accessory mount 52 to the positioning mount 54 to retain the accessory component 50 on the motor mount plate 54. The method can further include inserting a fastener through a tab portion 59 of the accessory component 50 to fix the accessory component 50 to the motor mount plate 54. In at least one example, the accessory component 50 can be mounted to the fan assembly 22 prior to mounting of the fan assembly 22 within the main housing 24. In at least one example, the accessory component 50 can be mounted to the fan assembly 22 after to mounting of the fan assembly 22 within the main housing 24, wherein the accessory component 50 is inserted through the inlet opening 26 to mount the accessory component 50 to the motor mount plate 54.

(46) In one embodiment, the accessory component 50 comprises an acoustic device 47. One embodiment of the acoustic device 47 is depicted in FIGS. 1-4 and 11A-12B. For example, in FIG. 3A, the depicted embodiment of the acoustic device 47 includes an acoustic device housing 49 and first and second diaphragms 34, 35. As depicted, the acoustic device housing 49 defines a first distal portion 90, a second distal portion 94 and an intermediate portion 98 that extends between the distal portions 90, 94. One of the two diaphragms 34, 35 is disposed within each of the first distal portion 90 and the second distal portion 94 as depicted. As shown, for example, in FIG. 3A, the first distal portion 90 and the second distal portion 94 are each substantially wider than the intermediate portion 98, providing the acoustic device 47 with enlarged end portions and a generally U-shaped configuration.

(47) As depicted in FIGS. 3A and 12B, the first distal portion 90 includes a first surface 100, a first outer surface 104, a first connection surface 108 and a first lateral surface 112. An obtuse angle is formed between the first surface 100 and the first connection surface 108. The second distal portion 94 includes a second surface 120, a second outer surface 124, a second connection surface 128 and a second lateral surface 132. An obtuse angle is formed between the second surface 120 and the second connection surface 128. In the depicted embodiment, the first surface 100 is disposed substantially in parallel, and in a common plane, with the second surface 120. The acoustic device 47 includes a rear surface 140 as depicted. The rear surface 140 extends from a first peripheral surface 144 to a second peripheral surface 148. The rear surface 140 is disposed substantially parallel with the first surface 100 and the second surface 120. An acute angle is formed between the rear surface 140 and the first outer surface 104, and another acute angle is formed between the rear surface 140 and the second outer surface 124.

(48) As exemplarily shown in FIG. 3A, an obtuse angle is formed between the first peripheral surface 144 and the first lateral surface 112, and another obtuse angle is formed between the first peripheral surface 144 and the rear surface 140. An acute angle is formed between the first peripheral surface 144 and the first outer surface 104. Also, an obtuse angle is formed between the second peripheral surface 148 and the second lateral surface 132, and another obtuse angle is formed between the second peripheral surface 148 and the rear surface 140. An acute angle is formed between the second peripheral surface 148 and the second outer surface 124.

(49) The acoustic device 47 depicted in FIG. 3A also comprises the first outer surface 104 with a first ridge 105 that defines a first recessed portion 106 of the first distal portion 90. A first edge 107, disposed within the first recessed portion 106, defines a first opening 107a. As depicted, diaphragm 34 comprises a first annular diaphragm portion 34a disposed within, and adjacent, the first opening 107a. The first annular diaphragm portion 34a connects the diaphragm 34 to the first edge 107, as depicted. As also shown in FIG. 3A, the second outer surface 124 with a second ridge 125 that defines a second recessed portion 126 of the second distal portion 94. A second edge 127, disposed within the second recessed portion 126, defines a second opening 127a. Diaphragm 35 comprises a second annular diaphragm portion 35a disposed within, and adjacent, the second opening 127a. The second annular diaphragm portion 35a connects the diaphragm 35 to the second edge 127.

(50) The intermediate portion 98 of the device 47 defines an intermediate surface 150 and an intermediate outer surface 154. An obtuse angle is formed between the intermediate surface 150 and the first connection surface 108, indicated as in FIG. 3A. Another obtuse angle is formed between the intermediate surface 150 and the second connection surface 128, indicated as in FIG. 3A. Another obtuse angle is formed between the intermediate surface 150 and the intermediate outer surface 154. The intermediate surface 150 includes a curved surface 158, which defines a substantially constant curvature, as shown in FIG. 3A. The substantially constant curvature of the curved surface 158 is less than a constant curvature defined by the fan opening 44, as defined by respective radii of curvature of the curved surface 158 and the fan opening 44.

(51) The intermediate outer surface 154 is substantially parallel to a portion of the first outer surface 104, and the intermediate outer surface 154 is substantially parallel to a portion of the second outer surface 124. In some embodiments, one or more of the rear surface 140, first lateral surface 112 and second lateral surface 132 are in contact with, and/or adjacent, the housing wall 32. The housing wall 32 includes, in some embodiments, a first housing wall 32a, a second housing wall 32b, a third housing wall 32c and a fourth housing wall 32d, as shown in FIG. 3A. Further, housing walls 32a and 32b define a first corner 57a, housing walls 32b and 32c define a second corner 57b, housing walls 32c and 32d define a third corner 57c and housing walls 32d and 32a define a fourth corner 57d. Each of the diaphragms 34, 35 can be disposed substantially in one of the corners 57a, 57b, 57c, 57d. In some embodiments, diaphragm 34 is disposed in the third corner 57c and diaphragm 35 is disposed in the second corner 57b.

(52) In some embodiments, one or more of the first surface 100, first outer surface 104, first connection surface 108, first lateral surface 112, second surface 120, second outer surface 124, second connection surface 128, second lateral surface 132, rear surface 140, first peripheral surface 144, second peripheral surface 148, intermediate surface 150 and intermediate outer surface 154 are substantially flat surfaces. In one embodiment, the rear surface 140, first peripheral surface 144 and second peripheral surface 148 are substantially flat surfaces. Referring to FIG. 12B, a distance D1 is defined as the height of the first surface 100 and a distance D2 is defined as the height of the housing wall 32, each measured from the motor mount plate 42. D1 extends substantially perpendicularly from the motor mount plate 42. D2 extends substantially perpendicularly from the motor mount plate 42 to a distal housing edge 33. The distal housing edge 33 is disposed on a substantially opposite side of the housing wall 32 than is the motor mount plate 42. Further, a peripheral flange 37 extends from distal housing edge 33 and, in some embodiments, the peripheral flange 37 is substantially perpendicular to the housing wall 32. A distance D3 is defined as a difference between D2 and D1, and D3 is a non-zero distance. In other words, the height of the first surface 100, D1, is less than an overall height of the housing wall 32, D2, as measured from the motor mount plate 42. In this manner, the device 47, including diaphragms 34, 35, are recessed inward from the flange 37. Further, the first lateral surface 112, the second lateral surface 132 and the rear surface 140 are adjacent the housing wall 32 in some embodiments. As best shown in FIG. 1, the motor mount plate 42 includes a motor mount plate peripheral flange 39 disposed at a perimeter of the motor mount plate 42. In some embodiments, the motor mount plate peripheral flange 39 connects the motor mount plate 42 to the housing wall 32.

(53) Returning to FIG. 12B, a distance D4 is defined as the width of the intermediate portion 98 between the rear surface 140 and the intermediate surface 150, as measured perpendicularly to the rear surface 140 and equidistant between the first lateral surface 112 and the second lateral surface 132. D5 is defined as the width of the first distal portion 90 between the rear surface 140 and the first surface 100 and D6 is defined as the width of the second distal portion 94 between the rear surface 140 and the second surface 120. Each of D5 and D6 is measured perpendicularly to the rear surface 140. D5 is substantially equal to D6, and D5 and D6 are each greater than D4. A distance D7 is defined as the width of the intermediate portion 98 between the rear surface 140 and the intermediate surface 150, as measured perpendicularly to the rear surface 140 and between the first distal portion 90 and the area where D4 is measured. A distance D8 is defined as the width of the intermediate portion 98 between the rear surface 140 and the intermediate surface 150, as measured perpendicularly to the rear surface 140 and between the second distal portion 94 and the area where D4 is measured. Each of D7 and D8 is greater than D4.

(54) As depicted in FIG. 3A, the acoustic device 47 can be disposed substantially within the main housing 24 adjacent the fan opening 44. As depicted, the fan opening 44 defined in the motor mount plate 42 leaves a narrow space between the fan opening 44 and intermediate portions of each side wall 32 of the main housing 24 as compared to relatively larger spaces between the fan opening 44 and each corner defined by the side walls 32 of the main housing 24. The generally U-shaped configuration of the acoustic device 47 (defined by relative widths of the distal portions 90, 94 and the intermediate portion 98) facilitates the disposition of the acoustic device 47 in these spaces without overlapping the fan opening 44, which would impede air intake by the fan 30. In particular, each of the first distal portion 90 and the second distal portion 94 is disposed substantially between the fan opening 44 and a different outer corner of the motor mount plate 42. Similarly, each of the first distal portion 90 and the second distal portion 94 is disposed substantially between the fan opening 44 and a different outer corner of the main housing 24. The intermediate portion 98 connects the first distal portion 90 to the second distal portion 94 and the relatively narrow width of the intermediate portion 98 prevents the intermediate portion 98 from overlapping any portion of the fan opening 44.

(55) Referring to FIG. 3A, each of the diaphragms 34, 35 may be disposed substantially between the fan opening 44 and a different outer corner of the motor mount plate 42. As also depicted in FIG. 3A, each of the diaphragms 34, 35 may be disposed substantially between the fan opening 44 and a different outer corner of the side wall 32. Each of the diaphragms 34, 35 may be disposed substantially between the fan opening 44 and a different outer corner defined by the motor mount plate 42 and the side wall 32, as shown in FIG. 3A. Further, each of the diaphragms 34, 35 may be disposed, as also shown in FIG. 3A, substantially between the fan opening 44 and a different outer corner of the main housing 24. In some embodiments, the first distal portion 90, second distal portion 94, acoustic device 47, diaphragm 34 and/or diaphragm 35 is disposed radially outwardly of the fan opening 44. In some embodiments, the first distal portion 90, second distal portion 94, acoustic device 47, diaphragm 34 and/or diaphragm 35 is disposed radially outwardly of a drive shaft 53, as defined relative to the fan opening 44.

(56) As stated previously, the acoustic device 47 produces an acoustic flow towards the inlet opening 26. In depicted embodiments, the acoustic device 47, diaphragms 34, 35 and/or the acoustic device housing 49 are disposed outside of an air flow path through the fan opening 44. Such an arrangement enables the ventilation assembly 20 to draw a flow of intake air through the fan opening 44 that is not hindered or obstructed by any portion of the acoustic device 47, diaphragms 34, 35 or acoustic device housing 49. As depicted in FIG. 3A, and mentioned above, the general form-factor of the acoustic device 47, including relatively wide first and second distal portions 90, 94, corresponding to D5 and D6, and a relatively narrow intermediate portion 98, corresponding to D4, enables large diaphragms 34, 35 to be used in the acoustic device 47 despite the narrow space available between the fan opening and portions of the main housing 24. This enables the generation of a more desirable range and magnitude of acoustic flow by the acoustic device 47. The relatively narrow intermediate portion 98, corresponding to D4, enables the acoustic device 47 to avoid the intake air flow through the inlet opening 26 while still including relatively large diaphragms 34, 35 for desirable acoustic flow properties directed toward the inlet opening 26.

(57) In the event of inconsistent usages between this document and any documents so incorporated by reference, the usage in this document controls.

(58) In this document, the terms a or an are used, as is common in patent documents, to include one or more than one, independent of any other instances or usages of at least one or one or more. In this document, the term or is used to refer to a nonexclusive or, such that A or B includes A but not B, B but not A, and A and B, unless otherwise indicated. In this document, the terms including and in which are used as the plain-English equivalents of the respective terms comprising and wherein. Also, in the following claims, the terms including and comprising are open-ended, that is, a system, device, article, composition, formulation, or process that includes elements in addition to those listed after such a term in a claim are still deemed to fall within the scope of that claim. Moreover, in the following claims, the terms first, second, and third, etc. are used merely as labels, and are not intended to impose numerical requirements on their objects.

(59) The above description is intended to be illustrative, and not restrictive. For example, the above-described examples (or one or more aspects thereof) may be used in combination with each other. Other embodiments can be used, such as by one of ordinary skill in the art upon reviewing the above description. The Abstract is provided to comply with 37 C.F.R. .sctn.1.72(b), to allow the reader to quickly ascertain the nature of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. Also, in the above Detailed Description, various features may be grouped together to streamline the disclosure. This should not be interpreted as intending that an unclaimed disclosed feature is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the Detailed Description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that such embodiments can be combined with each other in various combinations or permutations. The scope of the present subject matter should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.