# US 6,315,525 B1 · Multi-purpose clean air fan and fan motor mount assembly

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- Number: US 6,315,525 B1
- Document ID: US6315525B1
- Status: Granted
- Kind: B1
- Application number: 09/204,605
- Filed: 1998-12-03
- Granted: 2001-11-13
- Earliest claimed: 1998-12-03
- Assignees: Microzone Corporation
- Inventors: Terence Webb
- Web page: https://patentgrep.com/patent/US6315525B1

## CPC

- F04D 29/703: {specially for fans, e.g. fan guards}
- B01D 46/0005: {Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence)}
- B01D 46/10: Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D 46/521: {using folded, pleated material}
- B01D 2265/028: Snap, latch or clip connecting means
- B01D 2267/40: Different types of filters
- B01D 2273/30: Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan
- B01D 2279/51: in clean rooms, e.g. production facilities for electronic devices, laboratories
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)

## Abstract

A multi-use clean air fan and fan motor mount assembly comprising a bifurcated conical air inlet and blown air deflector, a fan motor mount, motor mount supports, a fan motor and a fan, the bifurcated conical air inlet and blown air deflector having a long outer wall, and a short inner wall, the fan motor mount suspended within the bifurcated conical air inlet and blown air deflector by motor mount supports fastened between the outer wall of the bifurcated conical air inlet and blown air deflector and the fan motor mount, an aperture defining a central opening in the top of the bifurcated conical air inlet and blown air deflector, the fan and fan motor having a common longitudinal axis with the longitudinal axis of the bifurcated conical air inlet and blown air deflector, the fan having a series of vanes extending outwardly from the central longitudinal axis of the fan, the inside of the long outer wall of the bifurcated conical inlet and blown air deflector surrounding more than half of the longitudinal height of the vanes of the fan.

## Claims

### Claim 1

A multi-use clean air fan and fan motor mount assembly comprising a bifurcated conical air inlet and blown air deflector, a fan motor mount, motor mount supports, a fan motor and a fan,
the bifurcated conical air inlet and blown air deflector having a long outer wall, and a short inner wall,
the fan motor mount suspended from the bifurcated conical air inlet and blown air deflector by motor mount supports fastened between the outer wall of the bifurcated conical air inlet and blown air deflector and the fan motor mount,
an aperture defining a central opening in the top of the bifurcated conical air inlet and blown air deflector, the fan and fan motor having a common longitudinal axis with the longitudinal axis of the bifurcated conical air inlet and blown air deflector,
the fan having a series of vanes extending outwardly from the central longitudinal axis of the fan, the inside of the long outer wall of the bifurcated conical inlet and blown air deflector surrounding between two-thirds and three quarters of the vertical height of the vanes of the fan.

### Claim 2 (depends on 1)

The multi-use clean air fan and fan motor mount assembly of claim 1 in a modular clean air module,
the modular clean air module comprising in combination a pre-filter, a multi-use fan and fan motor mount assembly, and a final filter assembly,
the pre-filter fastened above the inlet of the bifurcated conical air inlet and blown air deflector,
the final filter supported below the blown air deflector of the bifurcated conical air inlet and blown air deflector.

### Claim 3 (depends on 1)

The multi-use clean air fan and fan motor mount assembly of claim 1 in a workstation,
the workstation comprising a pre-filter assembly, a multi-use clean air fan and motor mount assembly and a final filter assembly,
the pre-filter assembly fastened above the inlet of the bifurcated conical air inlet and blown air deflector, the final filter assembly fastened below the blown air deflector of the bifurcated conical air inlet and blown air deflector.

### Claim 4 (depends on 1)

The multi-use clean air fan and fan motor mount assembly of claim 1 in a soft wall clean air unit,
the soft wall clean air unit having a pre-filter assembly and a final filter assembly,
the pre-filter assembly fastened above the inlet of the bifurcated conical air inlet and blown air deflector,
the final filter assembly fastened below the blown air deflector of the bifurcated conical air inlet and blown air deflector.

### Claim 5 (depends on 1)

The multi-use clean air fan and fan motor mount assembly of claim 1 in a mobile soft wall clean air unit,
the mobile soft wall clean air unit comprising a pre-filter assembly, a multi-use clean air fan and fan motor mount assembly and a final filter assembly,
the pre-filter assembly fastened above the inlet of the bifurcated conical air inlet and blown air deflector,
the final filter assembly fastened below the blown air deflector of the bifurcated conical air inlet and blown air deflector.

### Claim 6 (depends on 2)

The multi-use clean air fan and fan motor mount assembly of claim 2 including a vibration isolation system,
the vibration isolation system comprised of rubber isolators,
the rubber isolators located between fasteners connecting the motor mount supports to the motor mount and the outer wall of the bifurcated conical air inlet and blow air deflector.

### Claim 7

A clean air fan filter module comprising a pre-air filter assembly, a fan and fan motor mount assembly and a final filter assembly,
the pre-filter assembly comprised of a pre-filter housing, and a pre-filter,
the pre-filter housing including a series of openings in at least one side of the housing defining apertures,
the pre-filter supported on the housing above said openings,
the fan and fan motor mount assembly comprising a bifurcated conical air inlet and blown air deflector, a fan motor mount, motor mount supports, a fan motor and a fan,
the bifurcated conical air inlet and blown air deflector having a long outer wall, and a short inner wall,
a fan motor mount suspended by motor mount supports extending between the outer wall of the bifurcated conical air inlet and blown air deflector and the fan motor mount,
an aperture defining a central opening in the top of the bifurcated conical air inlet and blown air deflector,
the fan and fan motor having a common longitudinal axis with the longitudinal axis of the bifurcated conical air inlet and blown air deflector,
the fan having a series of vanes extending outwardly from the central longitudinal axis of the fan,
the inside of the long outer wall of the bifurcated conical inlet and blown air deflector surrounding more than half of the longitudinal height of the vanes of the fan,
the final filter assembly comprising a final filter top, sidewalls and final filter.

### Claim 8

A clean air module comprising in combination an air pre-filter assembly, a fan and fan motor mount assembly and a final filter assembly,
in which the fan and fan motor mount assembly comprises a bifurcated conical air inlet and blown air deflector, a fan motor mount, motor mount supports, a fan motor and a fan,
the bifurcated conical air inlet and blown air deflector having a long outer wall, and a short inner wall,
an aperture defining a central opening in the top of the bifurcated conical air inlet and blown air deflector,
the fan and fan motor having a common longitudinal axis with the longitudinal axis of the bifurcated conical air inlet and blown air deflector,
the fan having a series of vanes extending outwardly from the central longitudinal axis of the fan,
the inside of the long outer wall of the bifurcated conical inlet and blown air deflector surrounding ⅔ to ¾ of the longitudinal height of the vanes of the fan.

### Claim 9 (depends on 8)

The clean air module of claim 8 in which the air pre-filter assembly is comprised of a housing, the housing having apertures in at least one side of the housing, pre-filter material fastened to the housing covering said apertures.