JPH0611058Y2 - Electrostatic dust filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a dust collecting filter.

(Prior Art) In addition to various air purifiers, dust-collecting filters are attached to air-conditioned electric appliances such as air conditioners, blowers, cool air blowers, dehumidifiers, and oil fan heaters.

Conventional dust collecting filters include a method of mechanically and structurally collecting dust and a method of absorbing dust by static electricity.

Regardless of which method is used, the original function of the filter is to allow as much air as possible to pass therethrough and to collect dust in an amount corresponding to the amount of air passing through.

(Problems to be solved by the invention) However, when the filter is made finer to increase the dust collection efficiency, clogging occurs in a short time and ventilation resistance increases, and the collection effect cannot be maintained.

Therefore, it is necessary to replace the filter each time the filter is clogged or to remove the clog with a vacuum cleaner. If the frequency increases, these operations are extremely troublesome and tend to be neglected.

The present invention was completed by focusing on the fact that the electrostatic filter has a dust collecting effect even if air flows along the surface without passing through the filter. The present invention clarifies an electrostatic dust collecting filter that has almost no increase in ventilation resistance even when used for a long period of time, and has a long collection effect.

(Means for Solving the Problems) The electrostatic type dust collecting filter of the present invention is a sheet-like filter medium (1) which is subjected to a charging process and has a large number of through holes (4) formed in a substantially uniform distribution.
, Is formed by stacking through a breathable spacer (5), the spacer (5) has a breathability in the thickness direction and a flow path (50) that allows the flow of air along the surface of the filter medium (1). And the through holes (4) (4a) of the adjacent filter media (1) (1a) are displaced so that they do not overlap.

(Operation and effect) The air that has passed through the filter material (1) of the first layer or has passed through the through hole (4) passes through the spacer (5) and part of it is the filter material of the second layer.
After passing through (1a), a part collides with the filter medium (1a) and becomes a spacer.
It moves along the surface of the filter medium (1a) through the channel (50) of (5) and passes through the through hole (4) of the filter medium (1a).

Through holes (4) in filter media (1) (1a) adjacent to each other via a spacer (5)
(4a) is a through hole because the positions are shifted so that they do not overlap.
(4) It does not pass air through (4a), but flows along the surface of the filter medium (1), at which time dust in the air is effectively transferred to the filter medium (1) by the electrostatic action of the filter medium (1). Adsorbed.

The dust contained in a part of the air that has permeated the inside of the filter medium (1) is adsorbed to the filter medium by the electrostatic action and mechanical filtration action of the filter medium.

Even if dust is deposited on the surface of the filter medium (1) due to long-term use, air will not flow unless the through holes (4) of the filter medium (1) are blocked.
It flows through the hole and the flow path of the spacer (5) to the filter medium (1) of the next layer. Therefore, it is possible to suppress an increase in ventilation resistance of air as compared with a conventional filter and to maintain a predetermined dust collecting effect.

(Example) FIG. 1 is a perspective view of the electrostatic dust collecting filter in a disassembled state, and FIG. 2 is a sectional view of the filter.

The electrostatic dust filter is a sheet-shaped filter medium (1) that has been charged and has a large number of through-holes (4) formed in a substantially uniform distribution. Composed.

The filter material (1) is made of synthetic resin with a fine mesh (2) and fibers (4).
Are densely entangled with each other to form a sheet, or a non-woven sheet is subjected to electrostatic processing.

The filter medium (1) is provided with through holes (4) in a substantially uniform distribution. In the embodiment, long holes having a width of about 5 mm and a length of about 30 mm are regularly formed at intervals of 10 mm. .

The spacer (5) has air permeability in the thickness direction and also has a channel (50) that allows air to flow along the surface of the filter medium (1), and the spacer (5) of the embodiment has a net shape. Formed on the weft
The gap (53) created by the weight of the (51) and the warp (52) is
A part of the flow path (50) along the surface of (1) is formed.

The positions of the through holes (4) of the filter medium (1) adjacent to each other via the spacer (5) are displaced.

However, the air that has passed through the filter medium (1) of the first layer or through the through holes (4) passes through the spacer (5) and partly passes through the filter medium (1a) of the second layer. Then, a part thereof collides with the filter medium (1a) and moves along the surface of the filter medium (1a) through the flow path (50) of the spacer (5), and the through hole (4) of the filter medium (1a). Pass through.

Through holes (4) in filter media (1) (1a) adjacent to each other via a spacer (5)
(4a) is a through hole because the positions are shifted so that they do not overlap.
(4) Air does not pass through (4a), but flows along the surface of the filter medium (1), at which time dust in the air is effectively applied to the filter medium (1) by the electrostatic action of the filter medium (1). Adsorbed.

The dust contained in a part of the air that has permeated the portion other than the through holes (4) and (4a) of the filter medium (1) is adsorbed to the filter medium by the electrostatic action and mechanical filtration action of the filter medium.

Even if dust is deposited on the surface of the filter medium (1) due to long-term use, air will not flow unless the through holes (4) of the filter medium (1) are blocked.
It flows through the hole and the flow path of the spacer (5) to the filter medium (1) of the next layer. Therefore, it is possible to suppress the increase of the ventilation resistance of air,
The predetermined dust collection effect can be maintained.

In the practice of the present invention, a deodorizing filter can also be used by entwining fibrous activated carbon with the filter medium (1).

Further, the shape of the through hole (4) formed in the filter medium (1) can be implemented in various shapes such as a circle, a square, and an ellipse. Various modifications are possible within the scope described in the claims of registration.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of the filter, and FIG. 2 is a sectional view of the filter. (1) ... Filter material, (4) ... Through hole (5) ... Spacer

Claims (1)

[Scope of utility model registration request] 1. A through-hole (4) having a substantially uniform distribution after being subjected to electrification processing.
The sheet-shaped filter medium (1) having the above-mentioned structure is laminated by way of a breathable spacer (5). Has a flow path that allows the passage of the through, the adjacent filter media (1) (1a) through holes
(4) (4a) is an electrostatic dust collection filter that is displaced so that it does not overlap.