METHOD AND APPARATUS FOR HIGH EFFICIENCY AIR PURIFICATION

• US 20150297771A1
• Filed: 05/18/2012
• Published: 10/22/2015
• Est. Priority Date: 05/20/2011
• Status: Active Grant

• Current Assignee: Sui Chun Law
• Original Assignee: Akos Enterprise Limited
• Inventors: LAW, SUI CHUN, CHAN, YIU WAI
• Granted Patent: US 9,895,462 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61L 9/00 Disinfection, sterilisation or deodorisation of air body deodorants A61Q15/00; purifying air by respirators A62B, A62D9/00; separating dispersed particles from gases or vapours B01D45/00 - B01D51/00, B03C3/00; chemical or biological purification of waste gases B01D53/34; production of ozone C01B13/10; air-conditioning systems incorporating sterilisation F24F3/16, F24F8/20
• CPC Class Codes: B01D 2253/102 Carbon
• CPC Class Codes: B01D 2253/108 Zeolites
• CPC Class Codes: B01D 2255/802 Photocatalytic
• CPC Class Codes: B01D 2257/708 Volatile organic compounds V.O.C.'s
• CPC Class Codes: B01D 2257/90 Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
• CPC Class Codes: B01D 2258/06 Polluted air
• CPC Class Codes: B01D 53/04 with stationary adsorbents B01D53/025 takes precedence
• CPC Class Codes: B01D 53/885 Devices in general for catalytic purification of waste gases
• CPC Class Codes: F24F 13/28 Arrangement or mounting of filters

Abstract

The present invention discloses an air purification apparatus. The air purification apparatus comprising: a casing which contains at least one apparatus air inlet and at least one apparatus air outlet; at least one main filter which is being installed at the apparatus air inlet and/or within the casing; at the periphery of the main filter, there locates a primary air flow inlet and a secondary air flow inlet. When a primary air flow is drawn to flow from the upstream to the downstream positions inside the casing, the primary air flow is adapted to pass by at least one edge of the exterior of the main filter, resulting at least two exterior surfaces of the main filter being exerted with different atmospheric pressures. Through the secondary air flow inlet, a secondary air flow is entrained through the main filter and flows from its exterior surface is exerted with higher atmospheric pressure to its exterior surface is exerted with lower atmospheric pressure. The invention offers an air purification apparatus which owns the characteristics of simple structure, able to extend the life-span of the filter cost effectively, low energy consumption and induced low noise level.

Claims

1-40. -40. (canceled)

41. An air purification apparatus, comprising:

a casing;

at least one main filter; and

at least one means for drawing a primary air flow from upstream to downstream within the casing;

wherein the primary air flow is adapted to pass by at least one edge of an exterior of the main filter, causing at least two exterior surfaces of the main filter being exerted in different atmospheric pressures;

a secondary air flow comprising the air with pollutants is entrained through the main filter from the exterior surface of the main filter that is exerted with a higher atmospheric pressure to the exterior surface of the main filter that is exerted with a lower atmospheric pressure;

the air with pollutants thereby is purified.

42. The air purification apparatus according to claim 41, wherein the air purified by main filter is merged and multiplied with the primary air flow.

43. The air purification apparatus according to claim 41, further comprising at least one auxiliary filter;

the auxiliary filter being arranged in one or more of the following ways;

being arranged in such a way that the auxiliary filter is passed through by the primary air flow, the auxiliary filter is assembled at the upstream and/or the downstream positions of the main filter;

being arranged in such a way that the auxiliary filter is in parallel with the primary filter, either being placed in front of the air inlet surface and/or after the air outlet surface of the main filter, the auxiliary filter is being passed through by the secondary air flow;

being arranged in such a way that the auxiliary filter is in series with the primary filter, either being placed the upstream and/or the downstream positions of the main filter;

the auxiliary filter is being passed through by the secondary air flow.

44. The air purification apparatus according to claim 43, wherein the air purified by the main filter and the auxiliary filter is merged and multiplied.

45. The air purification apparatus according to claim 41, comprising at least one exhaust port on the casing for venting the pressure, wherein an outside air flows into the casing or an inside air escapes out of the casing through the exhaust port.

46. The air purification apparatus according to claim 41, wherein the means for drawing the primary air flow from the upstream position to the downstream position is a fan or a rotating device.

47. The air purification apparatus according to claim 41, further comprising an air inlet and air outlet, said drawing the primary air flow from the upstream position to downstream position meaning to mount the air inlet or the outlet of the air purification apparatus to an air inlet or an air outlet of an environment device, and achieving the purpose of drawing the air flow from the upstream to the downstream within the casing.

48. The air purification apparatus according to claim 43, wherein the main filter and the auxiliary filter further possess one or more difference:

different filtering principle,

different optimal filtration air flow rate,

different retention time towards pollutants by the corresponding filter,

different air flow resistance,

different filter density,

wherein, regardless of the differences, the main filter and the auxiliary filter are always operated at their own respective ideal air flow rates to remove different types of pollutants under one primary air flow rate in the air purification apparatus.

49. The air purification apparatus according to claim 41, wherein the main filter is a filter having a non-uniform thickness, an air inlet profile surface and an air outlet profile surface of the main filter by the vertical cross-section view are not in parallel manner.

50. The air purification apparatus according to claim 41, wherein the main filter is in the shape of a hollow cylinder;

the inner surface area and the outer surface area of the hollow cylindrical shaped main filter are the air inlet and the air outlet, or are the air outlet and the air inlet of the main filter respectively;

the primary air further passes by at least one path as mentioned below;

i. the primary air flow only passes by the inner surface area of the hollow cylindrical main filter;

ii. the primary air flow only passes by the outer surface of the hollow cylindrical main filter;

iii. the primary air flows pass by both the inner and outer surfaces of the hollow cylindrical main filter.

51. The air purification apparatus according to claim 41, wherein the air purification apparatus further operates in co-ordinate manner with different environment device, such as heater, cooler, air conditioner, humidifier, dehumidifier, kitchen exhaust hood, hand dryer, food decomposer, compost machine, pet houses and shoes cabinet.

52. The air purification apparatus according to claim 41, further comprising at least one apparatus air inlet, at least one primary air flow inlet, and at least one secondary air flow inlet, wherein the apparatus creates different primary air flows by changing any of the following parameters:

(a) the aperture size and the orientation of the apparatus air inlet;

(b) the size and the orientation of the primary air flow inlet;

(c) the size and the orientation of the secondary air flow inlet;

(d) the dimensions on length, width, thickness, height of the casing;

(e) the width, the length and the orientation of the passage within the casing that allow the primary air flow to flow through;

(f) the orientation of the main filter;

(g) the orientation of the auxiliary filter;

(h) the speed of the rotating device that drive.

53. A method for air purification, comprising:

a primary air flow is formed due to an operation of a fan, the primary air passes by at least one edge of an exterior of a main filter, causing at least two exterior surfaces of the main filter being exerted in different atmospheric pressures; and

a secondary air flow is formed because of the different atmospheric pressures being exerted at the two exterior surfaces of the main filter, the secondary air flow being entrained to pass through the main filter.

54. The method according to claim 53, wherein the air purified by main filter is merged and multiplied with the primary air flow.