70 CFM bath ventilation fans with flush mount lights and motor beneath blower wheel

• US 9,528,714 B2
• Filed: 11/02/2015
• Issued: 12/27/2016
• Est. Priority Date: 09/10/2010
• Status: Active Grant

• Current Assignee: Chien Luen Industries Co., Ltd.
• Original Assignee: Chien Luen Industries Co., Ltd.
• Inventors: Tom, Lawrence
• Primary Examiner(s): Kosanovic, Helena
• Application Number:
  US14/930,087
• Publication Number:
  US 20160054015A1
• Time in Patent Office: 421 Days
• Field of Search: 454/349
• US Class Current: 1/1
• CPC Class Codes: F04D 19/00 Axial-flow pumps F04D21/00 takes precedence; pump comprising axial flow and radial flow stages F04D17/025
• CPC Class Codes: F21V 33/0088 Ventilating systems lighting fixtures combined with outlets for air treatment systems F24F13/078
• CPC Class Codes: F21V 33/0096 Fans, e.g. ceiling fans forced cooling of lighting devices characterised by the arrangement of fans F21V29/67
• CPC Class Codes: F21Y 2113/00 Combination of light sources
• CPC Class Codes: F24F 13/06 Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
• CPC Class Codes: F24F 13/078 combined with lighting fixtures
• CPC Class Codes: F24F 7/007 with forced flow using ducting systems F24F7/06

Abstract

Apparatus, systems and methods of generating 70 (seventy) CFM (cubic feet per minute) from ventilation fans for bathrooms with flush mount lights and having the motor partially inside and beneath the blower wheel. A one piece or multipiece housing for the bath fan can be attached to joists in the ceiling by a long telescoping mounting bracket, and a short telescoping mounting bracket that are each directly mounted on opposite outer side walls of the housing. A decorative pan about the light can have vents that receive the incoming air into the fan, which is exhausted therefrom by the motor driven blower.

Claims

1. An exhaust fan for ceilings, comprising:

a housing with a top, sides and bottom with opening, an outlet extending sideways from the housing, the top and bottom adapted to being parallel to a ceiling;

a blower wheel with a central opening mounted inside of the housing, the blower wheel rotating in a horizontal plane parallel to the top of the housing;

a motor having an upper end and a bottom end and sides, the upper end of the motor mounted by a plurality of spaced apart brackets to the top of the housing, the motor being inside of the blower wheel and separated from the blower wheel, the motor for rotating the blower wheel, wherein each of the brackets includes;

a single upper L-shaped flange and a single lower L-shaped flange forming a C shape, each single upper L-shaped flange consisting of a single horizontal leg and a single vertical leg, each single lower L-shaped flange consisting of a single horizontal leg and a single vertical leg, the single vertical leg of the upper L-shaped flange being attached to the single vertical leg of the lower L-shaped flange, with the single horizontal leg of the upper L-shaped flange directly attached to the outer top wall of the housing, and the single horizontal leg of the lower L-shaped flange directly attached to the upper end of the motor; and

a scroll having generally cylindrical sides and a side opening, an open end and an opposite closed end with a generally flat base plate forming the top of the housing, with the cylindrical sides of the scroll surrounding perimeter sides of the blower wheel, the scroll for directing air from the blower wheel through the outlet of the housing.

2. The exhaust fan of claim 1, wherein each of the brackets includes a fastener for attaching vertical legs of the upper L-shaped flange to the lower L-shaped flange.

3. The exhaust fan of claim 1, wherein the scroll consists of:

one piece having the generally cylindrical sides with the generally flat base plate, wherein the one piece reduces excess noise from air movement.

4. The exhaust fan of claim 1, further comprising:

a flush mount light attached to the bottom of the housing, wherein air enters into the open bottom of the housing and is exhausted therefrom by the motor run blower through the outlet duct extending sideways from the housing.

5. The exhaust fan of claim 4, wherein the flush mount light includes:

a dome shaped shade.

6. The exhaust fan of claim 1, further comprising:

an opening through the bottom of the motor;

a dome member fixed inside of the blower wheel;

a rod having an upper end and a bottom end, the upper end of the rod attached to inside the bottom opening of the motor, the bottom end of the rod attached to the dome member, so that the rod connects the blower wheel to the motor; and

a nut generally in the center of the wheel that fastens to the rod so that when the motor is on, the motor causes the blower wheel to spin.

7. The exhaust fan of claim 1, further comprising:

a light shade having a closed end and an open base end, the light shade for supporting a light source inside of the shade between the closed end and the open base end, the light shade being outside of the housing; and

a single decorative pan rim attached to the open base end of the light shade, the rim having an inner surface for flush mounting adjacent to a ceiling and an outer exposed surface, the rim having vent openings through the outer exposed surface and the inner surface, wherein air enters through the vent openings of the rim behind the light source and into the exhaust fan, and does not pass into the shade nor around the light source.

8. A method of exhausting air from a space through a ceiling mounted fan, comprising the steps of:

providing a housing having a top, sides, bottom with an opening, and a side exhaust duct extending from the housing;

providing a motor having an upper end, a bottom end and sides;

mounting the upper end of the motor by brackets to the top of the housing;

providing each of the brackets include a single upper L-shaped flange and a single lower L-shaped flange forming a C shape, each single upper L-shaped flange consisting of a single horizontal leg and a single vertical leg, each single lower L-shaped flange consisting of a single horizontal leg and a single vertical leg, the single vertical leg of the upper L-shaped flange being attached to the single vertical leg of the lower L-shaped flange, with the single horizontal leg of the upper L-shaped flange directly attached to the outer top wall of the housing, and the single horizontal leg of the lower L-shaped flange directly attached to the upper end of the motor;

mounting a blower wheel to the bottom end of the motor, with the wheel about the motor so that the wheel rotates in a horizontal plane parallel to the top;

providing a scroll having generally cylindrical sides and a side opening, an open end and an opposite closed with end with a generally flat base plate forming the top wall of the housing;

surrounding perimeter sides of the blower wheel within the generally cylindrical sides of the scroll; and

mounting the housing within a ceiling, so that the top and bottom of the housing is parallel to the ceiling.

9. The method of claim 8, further comprising the step of:

mounting a light shade with an inside light source with an exterior rim having at least one opening therethrough, to the open bottom of the housing, with the rim and light shade below the ceiling;

passing incoming air through the at least one opening of the rim, behind the light source and into the middle of the blower wheel with the scroll directing air from the blower wheel out the outlet duct extending sideways from one side of the housing, so that the incoming air does not pass into the light shade nor around the light source.

10. The method of claim 9, wherein the at least one opening in the rim includes:

a plurality of slotted openings.

11. The method of claim 8, further comprising the step of:

forming the scroll with the cylindrical sides and flat base plate from a one piece plate in order to reduce excess noise from air movement.

12. The method of claim 8, wherein each of the brackets includes a fastener for attaching the vertical leg of the upper L-shaped flange to the vertical leg of the lower L-shaped flange.

13. An exhaust fan comprising:

a housing having a top, sides, an outlet and bottom with an opening;

a motor having an upper end, a bottom end and sides, the upper end of the motor mounted by brackets to the top of the housing, wherein each of the brackets includes;

a single upper L-shaped flange and a single lower L-shaped flange forming a C shape, each single upper L-shaped flange consisting of a single horizontal leg and a single vertical leg, each single lower L-shaped flange consisting of a single horizontal leg and a single vertical leg, the single vertical leg of the upper L-shaped flange being attached to the single vertical leg of the lower L-shaped flange, with the single horizontal leg of the upper L-shaped flange directly attached to the outer top wall of the housing, and the single horizontal leg of the lower L-shaped flange directly attached to the upper end of the motor;

a blower wheel with an opening mounted inside of the housing, with the motor mounted in the housing, so that a portion of the motor is inside of the blower wheel, wherein the motor runs the blower wheel to rotate in a plane parallel to the top; and

a scroll having generally cylindrical sides and a side opening, an open end and an opposite closed end with a generally flat base plate forming the top of the housing, with the cylindrical sides of the scroll surrounding perimeter sides of the blower wheel, the scroll for directing air from the blower wheel through the outlet of the housing.

14. The exhaust fan of claim 13, further comprising:

a light shade outside of the housing having an interior light source mounted inside the shade, the shade attached to the bottom of the housing, and extending below the ceiling; and

a single pan rim having vents therethrough with the rim attached about a open base of the shade, wherein air enters through the vents of the rim behind the light source, and into the open bottom of the exhaust fan and is exhausted therefrom by the motor run blower, wherein the air does not pass into the shade nor around the light source.

15. The exhaust fan of claim 13, further comprising:

an opening through the bottom of the motor;

a dome member fixed inside of the blower wheel;

a rod having an upper end and a bottom end, the upper end of the rod attached to inside the bottom opening of the motor, the bottom end of the rod attached to the dome member, so that the rod connects the blower wheel to the motor; and

a nut generally in the center of the wheel that fastens to the rod so that when the motor is on, the motor causes the blower wheel to spin.

16. The exhaust fan of claim 13, wherein the scroll consists of:

a one piece plate forming the cylindrical sides and base plate, in order to reduce excess noise from air movement.

17. The exhaust fan of claim 13, wherein each of the brackets includes a fastener for attaching the vertical leg of the upper L-shaped flange to the vertical leg of the lower L-shaped flange.