JP3855433B2 - Air conditioner pre-filter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a prefilter for an air conditioner, and more particularly to a prepay type having good filter efficiency and easy to attach and detach.
[0002]
[Prior art]
As shown in FIG. 5, a pre-filter 1 of a conventional air conditioner is formed by integrating a net-like filter 1a formed of a synthetic resin and a frame 2 formed of a synthetic resin by heat fusion or the like. As shown in FIG. 3, the filter insertion guide 3b provided in the suction port 3a of the indoor unit 3 is detachably mounted.
However, the pre-filter of the air conditioner needs to be cleaned about once every two weeks in order to remove dust, and this net-like filter 1a is formed into a surface for easy cleaning, Since the area of the mouth 3a is limited, the area of the filter cannot be increased and the filter effect cannot be enhanced.
In view of this, it has been considered that a filter formed by bending alternately and having a sawtooth shape to enhance the filter effect is housed in a predetermined frame and made into a relief type, but there is a problem that it is difficult to clean.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to solve the above-described problems, and to provide a prefilter for an air conditioner having a structure that is easy to clean while improving the filter effect by forming a brief.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention thermally attaches a net-like filter formed of synthetic resin to a pair of frames formed of synthetic resin, and is detachably attached to a filter insertion guide provided in a suction port of an indoor unit. in pre-filter of an air conditioner comprising so as to, plurality would be a thin portion perpendicular to the insertion direction of the frame, upon attachment to the filter insertion guide, the thin portion is bent alternately In the state where it is formed in a pleat shape and is removed from the filter insertion guide, the thin portion extends to be formed in a substantially planar shape .
[0005]
A pre-filter for an air conditioner is provided in which the thin portion is provided with a spring that urges the frame body in a direction of extending the frame body linearly.
[0006]
The thin portion is provided with an intermediate thickness portion, and is a pre-filter for an air conditioner that is urged in a direction in which the frame body is linearly extended.
[0007]
The space between the thin portion and the thin portion provided in the frame is a pre-filter for an air conditioner formed so as to be longer than the width of the filter insertion guide.
[0008]
A prefilter for an air conditioner is provided in which protrusions corresponding to the thin portions are provided on at least one of the front and rear sides in the filter insertion guide.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
As described above, in the pre-filter of the air conditioner of the present invention, the thin portions are provided alternately on the front and back in a direction perpendicular to the insertion direction of the frame, and the thin portions are alternately folded when mounted on the filter insertion guide. Since it is bent to form fleets, by inserting it into the filter insertion guide provided at the suction port of the indoor unit, the thin wall portion is alternately bent to form fleets, and the filter effect when mounted In the state where it is lifted and removed, the thin part is stretched to have a substantially flat shape for easy cleaning.
[0010]
【Example】
Hereinafter, a pre-filter for an air conditioner according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view of an essential part showing a mounting state of a pre-filter of an air conditioner.
As shown in FIG. 1, the prefilter 1 is detachably attached to a filter insertion guide 3 b provided in the suction port 3 a of the indoor unit 3.
[0011]
FIGS. 2A and 2B are cross-sectional views of a main part showing an embodiment of a prefilter for an air conditioner according to the present invention, where FIG. 2A shows a mounted state, and FIG.
In the figure, reference numeral 1 denotes the pre-filter, which is heat-sealed to a frame 2 having a plurality of thin portions 2a perpendicular to the insertion direction and alternately front and back.
The filter insertion guide 3b is formed to be narrower than the length between the thin portions 2a of the frame 2, and a projection 3b1 corresponding to the thin portion 2a is provided on the inner side of the front surface. For this reason, when the prefilter 1 is inserted as shown in FIG. 2- (B) from below the filter insertion guide 3b, the thin portions 2a are alternately formed as shown in FIG. 2- (A). It bends, forms a pleat, and is accommodated in the filter insertion guide 3b.
[0012]
FIG. 3 is an enlarged view of a main part showing an embodiment of the prefilter 1. As shown in the figure, thin portions 2a of the frame 2 made of synthetic resin are alternately formed on the front and back sides.
The thin portion 2a is partially provided with a middle thickness portion 2a1, and when the pre-filter 1 is placed on the floor, the middle thickness portion 2a1 is urged in the direction in which the frame body 2 is extended. Yes.
[0013]
FIG. 4 is an enlarged view of an essential part showing another embodiment of the prefilter 1. As shown in the figure, a thin plate spring 2a2 is attached in parallel to a thin part 2a formed on the frame 2, and the frame is attached. 2 is extended in the direction of extending.
[0014]
Next, the operation of the above configuration will be described.
As described in FIG. 2, when the prefilter 1 is removed, the prefilter 1 extends as shown in FIG. 2B, and the extended prefilter 1 is inserted from below the filter insertion guide 3b. Thereby, as shown to FIG. 2- (A), since the thin part 2a bends alternately and forms a pleat and is accommodated in the filter insertion guide 3b, filter efficiency can be improved.
On the other hand, when the prefilter 1 is pulled out from under the filter insertion guide 3b, the thin portion 2a extends and becomes flat, so that dust can be easily sucked or cleaned with a vacuum cleaner or the like.
[0015]
【The invention's effect】
As described above, according to the pre-filter of the air conditioner according to the present invention, the thin portions are provided alternately on the front and back perpendicular to the insertion direction of the frame, and the thin portions are alternately arranged when the filter is inserted into the filter insertion guide. Since the pleats are formed by bending the filter into the filter insertion guide provided in the suction port of the indoor unit, the thin thin portions are alternately bent to form the fleet. The filter effect can be enhanced, and in the removed state, the thin portion is extended and the filter becomes substantially flat, so that cleaning can be easily performed.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a main part showing a mounting state of a pre-filter of an air conditioner.
FIGS. 2A and 2B are cross-sectional views of a main part showing an embodiment of a prefilter for an air conditioner according to the present invention, where FIG. 2A shows a mounted state, and FIG. 2B shows a removed and extended state.
FIG. 3 is a main part enlarged view showing another embodiment of the pre-filter of the air conditioner according to the present invention.
FIG. 4 is an enlarged view of an essential part showing another embodiment of the pre-filter of the air conditioner according to the present invention.
FIG. 5 is a perspective view showing a pre-filter of a conventional air conditioner.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Prefilter 1a Filter 2 Frame 2a Thin part 2a1 Middle thickness part 2a2 Leaf spring 3 Indoor unit 3a Suction port 3b Filter insertion guide 3b
3b1 protrusion

Claims (5)

In a pre-filter for an air conditioner in which a net-like filter formed of synthetic resin is heat-welded to a frame pair formed of synthetic resin and is detachably attached to a filter insertion guide provided in a suction port of an indoor unit. A plurality of thin portions perpendicular to the insertion direction of the frame, and the thin portions are alternately bent and formed into a pleat shape when attached to the filter insertion guide, and are removed from the filter insertion guide. The prefilter for an air conditioner is characterized in that the thin portion is elongated and formed in a substantially planar shape . The pre-filter for an air conditioner according to claim 1, wherein a spring for urging the frame body in a direction of linearly extending is provided on the thin portion. The pre-filter for an air conditioner according to claim 1, wherein the thin portion is provided with an intermediate thickness portion and urged in a direction in which the frame body extends linearly. The pre-filter for an air conditioner according to claim 1, wherein an interval between the thin portion and the thin portion provided in the frame is formed longer than a width of the filter insertion guide. The pre-filter for an air conditioner according to claim 1, wherein a protrusion corresponding to the thin portion is provided on at least one of the front and rear sides in the filter insertion guide.

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