JPS63134021A - Air filter device - Google Patents

Abstract

PURPOSE:To remove ultrafine dust and to clean the air in a room by detachably mounting a 2nd filter consisting of an electric charged net and an activated carbon net stuck with activated carbon on the backside of a 1st filter consisting of a frame and nets fixed to the frame. CONSTITUTION:The ultrafine dust passing through the nets 9 of the 1st filter 7 is attracted by the electrific charged net 11 of the 2nd filter 10 and is removed from the air. As comparatively large dust is removed by the 1st filter 7, the deterioration of the dust collecting effect and the increase of draft resistance due to the clogging are prevented, thereby maintaining the effect for a long period. Moreover, the odor in the air is adsorbed by the activated carbon net 12 and the air in the room is cleaned. The deteriorated 2nd filter 10 due to the usage over a long period is detachably and attachably exchanged simply in a short time by detaching attaching snaps 13a from to the other snaps 13b fitted in the net 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an air filter device, and particularly to an air filter device suitable for removing even minute dust and odors.

[Background of the invention]

In electrical equipment that has a blower, such as an air conditioner, an air filter is attached to a part of the ventilation path to remove dust by attaching a mesh made of synthetic resin thread to a synthetic resin frame using ultrasonic welding. . However, this air filter has the drawback that although it can remove large dust such as cotton dust that does not pass through the mesh, it cannot remove microscopic dust such as pollen that has a negative impact on the human body. Further, if there is a source of odor in a room where an air conditioner or the like is installed, there is a drawback that the air is circulated by the blower and the odor fills the room.

[Purpose of the invention]

An object of the present invention is to provide an air filter device that purifies the air in a room by removing minute dust and odor, thereby creating a more comfortable and healthy living space.

[Summary of the invention]

An air filter device comprising a first filter with a mesh fixed to a frame placed in front, and a second filter such as a charged mesh or an activated carbon mesh attached with activated carbon attached to the rear of the first filter in a removable manner.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. 1 is a cabinet that also serves as a casing for the blower, 2
3 is a blower, 3 is a heat exchanger, 4 is a dew tray for receiving dew condensed in the heat exchanger 3, and these are housed in the cabinet 1, and 5 is a decorative cover that covers all of these from the front. The decorative cover 5 integrates the suction port 5a and the discharge port 5b to form a ventilation path together with the cabinet 1, and the blower 2 causes air to flow as shown by the arrow. Reference numeral 6 denotes an air filter device which is detachably attached to the back surface of the suction port 5a from the outside. 7
1 is a first filter, in which a net 9 made of synthetic resin threads woven into a net shape is fixed to a synthetic resin frame 8 by ultrasonic welding or integral molding. Reference numeral 10 is a second filter, and a charged net 11 and activated carbon [12] made by adhering activated carbon to the net are formed into a layer and integrated by welding, etc., and one side of the snap 13a is attached to the front outer periphery of the net on the side of the first filter 7. Multiple units are provided for this purpose. The second filter 12 is the first filter 7
Make it smaller and place it at the back. The charging net 11 is made of woven or felted synthetic resin threads or fibers that are electrically charged.

Furthermore, the activated carbon net 12 is made of a net made by weaving synthetic resin threads to which granular or powdered activated carbon is attached. Here, in order to attach the second filter 10 to the first filter 7, the second filter 10 must be attached to the first filter 7.
Press the filter 7 against the other snap 13b from the front through the mesh 9 at a position where it abuts the other snap 13a.
They can be easily fixed and integrated by fitting them together. Also, to remove the second filter 10, use the other snap 13
If b is removed, the second filter 10 can be easily removed. Furthermore, the fixed and integrated filter device f6 is attached to the decorative cover 5 by inserting the first filter 7 toward the front and the second filter 10 toward the rear with respect to the air flow (arrow).

According to the air filter device as described above, even minute dust that passes through the mesh 9 of the first filter 7 is attracted to the charged mesh 11 of the second filter 10, so that it can be removed from the air. Furthermore, since large dust particles are removed by the first filter 7, a decrease in the dust removal effect and an increase in ventilation resistance due to clogging of the charging network 11 are suppressed, and the effect can be maintained for a long period of time. In addition, since odor in the air is adsorbed by the activated carbon net 12, the air in the room is purified and a more comfortable and am-like living space can be created. Further, the second filter 10, whose effectiveness has weakened due to long-term use, can be easily attached and detached by fitting and removing the one side 13a and the other side 13b of the snaps through the mesh 9, so that it does not require much effort to handle. .

Since the second filter 10 is made smaller than the first filter 7 so that the entire surface of the filter 9 is not blocked, ventilation resistance is small and a decrease in air volume can be suppressed. Therefore, even if cooling operation is performed at a relatively low temperature, there is no risk of frost forming on the heat exchanger 3.

〔Effect of the invention〕

According to the present invention, the first filter, which has a screen fixed to the frame, is placed in the front, and the second filter, such as a charged net or an activated carbon net to which activated carbon is attached, is placed in the rear, so that microscopic dust can be removed. Since it can remove odors and odors from the air, the air in the room is purified, creating a more comfortable and healthy living space, and the effect can be maintained for a long time.

Also.

According to the embodiment, a plurality of snaps are provided on the outer periphery of the front surface of the second filter with one side facing the first filter side, and the other snap is fitted through the mesh of the first filter, so that the second filter It can be easily attached and detached by fitting and removing snaps, and does not require much effort in handling. Furthermore, the second filter was made smaller than the first filter.

This has the effect of suppressing a decrease in air volume and eliminating the risk of frost formation on the heat exchanger during cooling operation at relatively low temperatures.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an air conditioner equipped with an air filter device of the present invention, FIG. 2 is a perspective view of the air filter device of the present invention, and FIG. 3 is an enlarged sectional view of the main part of FIG. 2. . 1... Cabinet, 2... Blower, 3... Heat exchanger, 4... Dew pan, 5... Decorative cover, 6...
Air filter device, 7... first filter, 8.
...Frame, 9...Net, 10...Second filter, 11
... Charged network, 12... Activated carbon network, 13a... One side of the snap, 13b... The other side of the snap. Figure/Army 2 Figure 3 Flash

Claims (1)

[Claims] 1. In the air filter of an air conditioner that is attached externally to a part of the air ventilation path, the first filter has a mesh fixed to the frame, and the activated carbon mesh has a charged mesh or activated carbon attached to the first filter. An air filter device characterized in that a second filter such as the above is detachably attached to the rear of the first filter.