Air filter device

Abstract

Cylindrical and the relationship Gu=f h P r / (2r o ε 0.25 )>0.8 and a motor for rotating the pleated air filter, wherein p r =(r o -r i ) / p s , r o = outer radius of cylindrical pleated filter, f h = height of cylindrical filter, r i = inner radius of cylindrical pleated filter, p s = distance between two adjacent pleat apexes on the inner radius, ε = ASHRAE efficiency of the air filter device.

Claims

[Claim 1] An air filter device for capturing particles with improved performance in the relationship between noise, power consumption, and clean air supply rate per unit volume of product, Rotary pleated air filter (2), A motor (31) for rotating the pleated air filter, wherein the motor has a matched angle of attack (α ｂ The impeller comprises an impeller with blades (40, 40', 53, 2040, 2041) having ) located inside, the blades being streamlined to provide a uniform airflow along and within the pleats of the rotary pleated air filter (2), and a motor, The pleated air filter has a cylindrical shape and is of the following formula: Gu=f ｈ ×p ｒ / (2×r Ｏ ×ε １／４ )>0.8 Designed according to the Gu number represented by, Here, f ｈ This is the length of the filter along the axis of rotation, p ｒ = (r Ｏ - r ｉ ) / Pleat interval (p ｓ ) and r ｉ This is the inner radius of the pleated air filter, r Ｏ This is the outer radius of the pleated air filter, The pleat spacing (p ｓ ) is the inner radius (r ｉ ) This is the distance between the tops of two adjacent pleats, An air filter device in which ε has a filter efficiency of 0.2 to 0.

9. [Claim 2] The air filter device according to claim 1, wherein Gu is greater than 1.

2. [Claim 3] The air filter device according to claim 1, wherein Gu is greater than 1.

5. [Claim 4] The air filter device according to any one of claims 1 to 3, wherein the cylindrical shape is open at one or both ends, and as a result when the rotary pleated air filter (2) rotates (21), centrifugal force creates an suction force that draws air through the pleated air filter and into the upstream side of the rotary pleated air filter (2) from one or two open ends, and the filtered air exits radially outward in all directions downstream of the rotary pleated air filter. [Claim 5] The blades of the impeller are radial fan blades (40, 40') arranged radially adjacent to the rotary pleated air filter (2), The radial fan blades (40, 40') are rotatably connected to the rotary pleated air filter (2), The air filter device according to any one of claims 1 to 4, wherein the total height of the blade is 12 mm or more. [Claim 6] The air filter device according to claim 5, wherein the total height of the blade is 15 mm or more. [Claim 7] The matched angle of attack (α) of the radial fan blade ｂ ) is the inner radius (R) of the rotary pleated air filter (2). ｉ） The air filter device according to claim 5 or 6, wherein the forward angle of attack is between 15° and 75°. [Claim 8] The air filter device according to any one of claims 5 to 7, wherein the radial fan blade is formed as a radial flow impeller disposed inside the rotary pleated air filter (2). [Claim 9] The air filter device according to claim 8, wherein the radial fan blades are formed to have an axial angle of attack and constitute the shape of the blades of the impeller in an axial flow radial impeller structure. [Claim 10] The air filter device according to any one of claims 1 to 9, further comprising an inlet impeller (150) having fan blades formed to have an axial angle of attack for imparting spin to the air flowing into the rotary pleated air filter (2). [Claim 11] An air filter device according to any one of claims 1 to 10, wherein one of the rotary cylindrical pleated air filters (2) further comprises an integrated conical fan element (44, 44') configured to taper from its maximum diameter at the deepest point so that air exits the rotary cylindrical pleated air filter (2), the cone tapers away from the inside of the filter towards the inflow area of ​​the rotary cylindrical pleated air filter (2), and as a result, the distribution of deeper airflow along the inner surface of the air filter is better controlled. [Claim 12] The air filter device according to claim 11, wherein two opposingly arranged conical fan elements (44, 44') having associated impellers (40, 40') ensure the distribution of incoming air from both sides of the air filter.

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