Filter assembly with dynamic filter media
First Claim
Patent Images
1. A filter assembly for removing particles from air flow across the filter assembly, the filter assembly comprising:
- a frame around a perimeter of the filter assembly;
a quantity of dynamic filter media for removing particles from air flowing from an upstream side of the filter assembly to a downstream side of the filter assembly;
a clean filter media storage chamber on a first side of the filter assembly;
a used filter media collection chamber within the frame on a second side of the filter assembly, opposite from the first side;
a turbine which spins from air flow traveling from the upstream side of the filter assembly to the downstream side of the filter assembly;
a gearbox receiving torque input from the turbine, the gearbox drives the dynamic filter media across the upstream side of the filter assembly and deposits dynamic filter media after use into the used filter media collection chamber; and
wherein a speed that dynamic media is moved into the used filter media collection chamber is dependent on a rate of air flow and largely independent of a length of time that the filter assembly has been in service.
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Abstract
A filter assembly for removing particles from air flow across the filter assembly with a frame around a perimeter of the filter assembly, dynamic filter media for removing particles from air flowing from an upstream side of the filter assembly to a downstream side of the filter assembly that passes from a clean filter media storage chamber to a used filter media collection chamber within the frame on a second side of the filter assembly. The dynamic filter media is moved from the output from a turbine shaft modified by a gearbox to drive a set of drive traction rollers.
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Citations
21 Claims
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1. A filter assembly for removing particles from air flow across the filter assembly, the filter assembly comprising:
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a frame around a perimeter of the filter assembly; a quantity of dynamic filter media for removing particles from air flowing from an upstream side of the filter assembly to a downstream side of the filter assembly; a clean filter media storage chamber on a first side of the filter assembly; a used filter media collection chamber within the frame on a second side of the filter assembly, opposite from the first side; a turbine which spins from air flow traveling from the upstream side of the filter assembly to the downstream side of the filter assembly; a gearbox receiving torque input from the turbine, the gearbox drives the dynamic filter media across the upstream side of the filter assembly and deposits dynamic filter media after use into the used filter media collection chamber; and wherein a speed that dynamic media is moved into the used filter media collection chamber is dependent on a rate of air flow and largely independent of a length of time that the filter assembly has been in service. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A filter assembly for removing particles from an air flow, the filter assembly comprising:
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a quantity of dynamic filter media for removing particles from air flowing from an upstream side of the filter assembly to a downstream side of the filter assembly; a frame around a perimeter of the filter assembly, the frame having a shoulder facing downstream between an upstream end of the frame and a downstream end of the frame so that the shoulder may engage a duct flange to rest against an upstream face of the duct flange; a clean filter media storage chamber on a first side of the filter assembly; a used filter media collection chamber within the frame on a second side of the filter assembly, opposite from the first side;
the used filter media collection chamber extending downstream beyond the duct flange;a turbine with a turbine shaft which spins from air flow traveling from the upstream side of the filter assembly to the downstream side of the filter assembly, the turbine shaft used to drive dynamic filter media into the used filter media collection chamber and pull unused dynamic filter media from the clean filter media storage chamber and; wherein a speed that dynamic media is moved into the used filter media collection chamber is dependent on a rate of air flow and largely independent of a length of time that the filter assembly has been in service. - View Dependent Claims (14, 15, 16, 17)
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18. A filter assembly for removing particles from an air flow, the filter assembly comprising:
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filter media including static filter media and dynamic filter media; a quantity of dynamic filter media for removing particles from air flowing from an upstream side of the filter assembly to a downstream side of the filter assembly as a portion of the dynamic filter media exposed to air flow as the dynamic filter media moves from one side of the filter assembly to an opposite side of the filter assembly; a frame around a perimeter of the filter assembly, the frame having a shoulder facing downstream between an upstream end of the frame and a downstream end of the frame so that the shoulder may engage a duct flange to rest against an upstream face of the duct flange; a clean filter media storage chamber on a first side of the filter assembly; a used filter media collection chamber within the frame on a second side of the filter assembly, opposite from the first side; static filter media located downstream of the portion of the dynamic filter media exposed to air flow; and a turbine with a turbine shaft which spins from air flow traveling from the upstream side of the filter assembly to the downstream side of the filter assembly, the turbine shaft used to drive dynamic filter media into the used filter media collection chamber and pull unused dynamic filter media from the clean filter media storage chamber; wherein a speed that dynamic media is moved into the used filter media collection chamber is dependent on a rate of air flow and largely independent of a length of time that the filter assembly has been in service; and wherein at least some filter media is located downstream of the duct flange during use of the filter assembly.
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19. A method for removing particles from a moving stream of air moving in an air duct when an air handling system is operating, the method comprising:
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placing a filter assembly in the air duct such that when the air handling system uses at least one fan to cause movement of air through the duct, at least a portion of that air travels through the filter assembly from an upstream side of the filter assembly to a downstream side of the filter assembly; operating the air handling system so that the air handing system at least intermittently uses the at least one fan to cause movement of the air through the filter assembly; using a turbine with a turbine shaft, the turbine located on the downstream side of the filter assembly to convert a portion of kinetic energy of the moving air to rotational energy; and using the rotational energy of the turbine shaft to cause dynamic filter media to move into a used filter media collection chamber while pulling unused dynamic filter media from a clean filter media chamber on an opposite side of the filter assembly from the used filter media collection chamber; and wherein a speed that dynamic media is moved into the used filter media collection chamber is dependent on a rate of air flow and largely independent of a length of time that the filter assembly has been in service. - View Dependent Claims (20, 21)
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Specification