AIR PURIFIER

Abstract

A domestic air purifier system comprising a removable particulate filter (4), a fan (2) or impeller and which is powered by a motor, an air duct (1) through which air passes in an air flow direction and is purified, and said air duct (1) comprising a duct wall and wherein a portion of said duct wall (1) comprises a gas filter (3) and a method of removing unwanted gases from ambient air by passing over a gas filter in such a system.

Claims

1. A domestic air purifier system comprising a removable particulate filter (4), a fan (2) or impeller and which is powered by a motor, an air duct (1) through which air passes in an air flow direction and is purified, and said air duct (1) comprising a duct wall and wherein a portion of said duct wall (1) comprises a gas filter (3).

2. The system according to claim 1, wherein the gas filter (3) comprises a duct surface and which is flush with the duct wall.

3. The system according to claim 1, wherein the air duct (1) is configured such that the air flow direction changes at least once during passage through the device.

4. The system according to claim 3, wherein the particulate filter (4) is disposed such that air passing along the air flow direction passes through the particulate filter (4).

5. The system according to claim 1, wherein the gas filter (3) comprises a foamed component.

6. A method of removing unwanted gases from ambient air by passing over a gas filter in the system as described in claim 1.

Description

[0025] Embodiments of the invention are now described with reference to the following non-limiting drawings in which:

[0026] FIG. 1 is a typical construction found in many commercial products. The air duct (1) defines the air flow (A) as created by the fan (2). The air passes through a particulate filter (4) and an activated carbon filter (3).

[0027] FIG. 2 is an embodiment according to the invention and where the activated carbon filters (3) are disposed at the sides of the air duct (1) such that the air flow passes by them and not through them. The particulate filter (4) is in the same position as in FIG. 1.

[0028] FIG. 3 is a further embodiment and where the duct is bent (at 5) to form an elbow. The activated carbon filter (3) in this instance is only disposed on the far surface of the air duct (1) at the bend. The particulate filter (4) in this embodiment is disposed before the carbon filter (3).