Folding telescopic filter

Abstract

The utility model relates to a folding telescopic filter, which comprises two parallel insertion plates, and the two insertion plates are the same and are rectangular plates; filter cloth is fixedly connected between the two inserting plates, the filter cloth is in a wave shape, the extending direction of the wave shape of the filter cloth is consistent with the direction of the center connecting line of the two inserting plates, and the width of the filter cloth is larger than the length of the inserting plates; an inserting structure is formed on one side, far away from the filter cloth, of the inserting plate; the inserting structure is connected to an air inlet of the air conditioner fan; the folding and compressing trolley can be manually stretched and retracted and can be folded and compressed during transportation, so that the size is reduced, the single-time transportation volume is increased, and the logistics cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning filtration, in particular to a foldable telescopic filter. Background Art

[0002] Central air conditioning is installed in many large buildings in the city. In order to ensure the fresh air in the building, the outside air is filtered and heat exchanged and sent into the building. Therefore, a filter is installed in the ventilation duct at the air inlet of the air conditioner to ensure the cleanliness of the air.

[0003] The existing filter is a fixed rectangular frame, and then the filter cloth is fixedly installed in the rectangular frame. During installation, the entire rectangular frame is inserted into the ventilation duct of the air inlet of the air conditioner; however, such a structural design will take up a lot of space during transportation, the single transportation volume is not high, and it will also increase logistics costs. Therefore, a foldable and retractable filter is needed. Utility Model Content

[0004] The purpose of the utility model is to provide a foldable telescopic filter to solve the problems existing in the above-mentioned prior art.

[0005] A foldable telescopic filter comprises two plug plates parallel to each other, the two plug plates are identical and are rectangular plates; a filter cloth is fixedly connected between the two plug plates, the filter cloth is wavy, the extension direction of the wave shape of the filter cloth is consistent with the direction of the center line of the two plug plates, and the width of the filter cloth is greater than the length of the plug plates; a plug-in structure is formed on one side of the plug plate away from the filter cloth; the plug-in structure is connected to the air inlet of the air conditioner fan.

[0006] Preferably, the plug-in structure includes sliding bars symmetrically fixed on both sides of the long center line of the plug board, the sliding bars are parallel to the long center line of the plug board, the cross-section of the sliding bar is L-shaped and the opening is toward the middle side; a baffle bar is fixed to the side of the plug board near one side of the two sliding bar openings, and the baffle bar is parallel to the sliding bar.

[0007] Preferably, a steel wire mesh is fixedly connected to one side of the filter cloth, and the shape of the steel wire mesh is wavy and corresponds to the shape of the filter cloth; any position of the steel wire mesh is tightly connected to the filter cloth.

[0008] Preferably, a plurality of limit pull strips are fixedly connected to both sides of the filter cloth, the limit pull strip on one side of the filter cloth is fixedly connected to all the peak positions of the filter cloth, and the limit pull strip on the other side of the filter cloth is fixedly connected to all the trough positions of the filter cloth.

[0009] Preferably, the pull-limiting cloth strip is formed with folds at a position between two adjacent wave crests of the filter cloth and at a position between two adjacent wave troughs, and the folds are bent toward the inside of the filter cloth.

[0010] The utility model discloses the following technical effects:

[0011] The utility model can be manually extended and retracted, and can be folded and compressed during transportation, thereby reducing the volume, increasing the single transportation volume, and reducing the logistics cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is a side view of the utility model;

[0014] Figure 2 It is a top view of the utility model;

[0015] Figure 3 This is a schematic diagram of the utility model after compression;

[0016] Figure 4 This is a schematic diagram of the utility model when it is installed in a ventilation duct.

[0017] in:

[0018] 1. Insert plate; 2. Filter cloth; 3. Slide bar; 4. Stop bar; 5. Wire mesh; 6. Cloth limit strip; 7. Crease. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] See attached Figure 1-4A foldable telescopic filter comprises two plug-in plates 1 which are parallel to each other, and the two plug-in plates 1 are identical and are rectangular plates; a filter cloth 2 is fixedly connected between the two plug-in plates 1, and the filter cloth 2 is wavy. The extending direction of the wavy filter cloth 2 is consistent with the direction of the center line of the two plug-in plates 1, and the width of the filter cloth 2 is greater than the length of the plug-in plates 1; a plug-in structure is formed on one side of the plug-in plate 1 away from the filter cloth 2; the plug-in structure is connected to the air inlet of the air conditioner fan.

[0022] The two ends of the filter cloth 2 can be glued together with the two plug-in plates 1 respectively by strong glue; a through groove is provided on the side wall of the ventilation duct at the air inlet of the air-conditioning fan, into which the filter can be inserted laterally, and the two sides of the filter are detachably connected to the inner wall of the ventilation duct through a plug-in structure to prevent displacement; the main function of the two plug-in plates 1 in the present application is to be connected to the inner wall of the ventilation duct, and the positions of the inner wall of the ventilation duct corresponding to the through groove are provided with structures compatible with the plug-in structure on the two opposite side walls of its inner cavity, and the plug-in plates 1 can be inserted and connected together, and the two plug-in plates 1 can be respectively connected to the two opposite side walls of the inner cavity of the ventilation duct, so that Firstly, the filter cloth 2 in the middle can filter the air entering the air conditioner; the width of the filter cloth 2 is greater than the length of the plug plate 1, so that the two ends of the filter cloth 2 that are not connected to the plug plate 1 can be close to the inner wall of the ventilation duct and the cover plate used to seal the through groove, preventing external airflow from flowing through the gap between the filter cloth 2 and the inner wall of the ventilation duct and between the filter cloth 2 and the cover plate, thereby reducing the filtering effect; before transportation, the two plug plates 1 are brought close to each other, and the filter cloth 2 in the middle will be squeezed and compressed, so that the volume will be reduced to a quarter or even a fifth of the original volume, and a larger amount can be loaded, thereby reducing the logistics cost.

[0023] A further optimized solution is that the plug-in structure includes sliding bars 3 symmetrically fixed on both sides of the long center line of the plug board 1, the sliding bars 3 are parallel to the long center line of the plug board 1, and the cross-section of the sliding bars 3 is L-shaped and the opening is facing the middle side; a blocking bar 4 is fixed to the side of the plug board 1 near the opening of the two sliding bars 3, and the blocking bar 4 is parallel to the sliding bar 3.

[0024] In the ventilation duct at the air inlet of the air conditioner fan, guide rails are symmetrically fixed on the two opposite side walls of the inner cavity. The cross-sectional shape of the guide rails is L-shaped and matches the shape of the slide bar 3. The slide bar 3 on the plug plate 1 can be inserted from one end of the guide rail and then connected to the inner wall of the ventilation duct. This connection method is similar to the installation method of the automobile air-conditioning filter element, which is vertically inserted into the ventilation duct; the baffle 4 can support the guide rail below to make the installation more stable.

[0025] According to a further optimization scheme, a steel mesh 5 is fixedly connected to one side of the filter cloth 2 . The shape of the steel mesh 5 is wavy and corresponds to the shape of the filter cloth 2 . Any position of the steel mesh 5 is tightly connected to the filter cloth 2 .

[0026] The wire mesh 5 can improve the strength of the filter cloth 2, prevent the filter cloth 2 from being deformed due to wind force, and keep its shape unchanged in the air-conditioning fan; the wire mesh 5 can be bonded to the filter cloth 2 by glue; when installing the utility model, the side of the filter cloth 2 bonded to the wire mesh 5 needs to face the inside of the pipe, that is, the leeward side.

[0027] According to a further optimization scheme, a plurality of limit pull strips 6 are fixedly connected to both sides of the filter cloth 2. The limit pull strips 6 on one side of the filter cloth 2 are fixedly connected to all the wave crest positions of the filter cloth 2, and the limit pull strips 6 on the other side of the filter cloth 2 are fixedly connected to all the wave trough positions of the filter cloth 2.

[0028] In order to prevent the filter cloth 2 from being damaged due to the large distance between the two plug plates 1, limit pull strips 6 are set on both sides of the filter cloth. Because the limit pull strips 6 are only bonded to the peaks and troughs of the wavy filter cloth 2, the distance between adjacent peaks will not exceed the distance between two adjacent bonding points of the limit pull strips 6. This distance can be set artificially according to needs, so as to avoid the filter cloth 2 being damaged or destroying its wavy structure.

[0029] According to a further optimization scheme, a fold 7 is formed on the limit pull strip 6 located between two adjacent wave crests of the filter cloth 2 and between two adjacent wave troughs, and the fold 7 is bent toward the inside of the filter cloth 2 .

[0030] The fold 7 allows the pull-limiting cloth strip 6 to bend toward the wavy middle portion of the filter cloth 2 when being compressed, making it more neat and beautiful.

[0031] When the utility model is produced, it needs to be stored and transported. The two plug plates 1 are brought as close as possible to minimize the overall volume, and then fixed with additional straps for loading and transportation. When in use, the straps are cut off, and the two plug plates 1 are held by hand respectively, so that the distance between the two plug plates 1 is almost the same as the air inlet of the air conditioner fan, and then inserted into the ventilation duct horizontally through the through groove opened on the ventilation duct. During the insertion process, the plug-in structure on the plug plate 1 is inserted into the guide rail on the inner wall of the ventilation duct for fixing, and finally the through groove on the ventilation duct is covered with a cover plate to complete the installation.

[0032] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A folded telescopic filter, characterized in that: include: Two plug plates (1) are parallel to each other, the two plug plates (1) are identical and are rectangular plates; a filter cloth (2) is fixedly connected between the two plug plates (1), the filter cloth (2) is wavy, the extension direction of the wavy filter cloth (2) is consistent with the direction of the center line of the two plug plates (1), and the width of the filter cloth (2) is greater than the length of the plug plates (1); a plug-in structure is formed on one side of the plug plate (1) away from the filter cloth (2); the plug-in structure is connected to the air inlet of the air conditioner fan.

2. A folded telescopic filter according to claim 1, characterized in that: The plug-in structure comprises slide bars (3) symmetrically fixed on both sides of the long center line of the plug board (1), the slide bars (3) are parallel to the long center line of the plug board (1), the cross section of the slide bars (3) is L-shaped and the opening faces one side of the middle; a retaining bar (4) is fixed to the side of the plug board (1) near one side of the opening of the two slide bars (3), and the retaining bar (4) is parallel to the slide bars (3).

3. A folded telescopic filter according to claim 1, characterized in that: A steel mesh (5) is fixedly connected to one side of the filter cloth (2); the shape of the steel mesh (5) is wavy and corresponds to the shape of the filter cloth (2); any position of the steel mesh (5) is tightly connected to the filter cloth (2).

4. A folded telescopic filter according to claim 1, characterized in that: A plurality of pull-limiting cloth strips (6) are fixedly connected to both sides of the filter cloth (2); the pull-limiting cloth strips (6) on one side of the filter cloth (2) are fixedly connected to all wave crest positions of the filter cloth (2), and the pull-limiting cloth strips (6) on the other side of the filter cloth (2) are fixedly connected to all wave trough positions of the filter cloth (2).

5. A folded telescopic filter according to claim 4, characterized in that: The pull-limiting cloth strip (6) is located between two adjacent wave crests of the filter cloth (2) and between two adjacent wave troughs, and a fold (7) is formed thereon, and the fold (7) is bent toward the inside of the filter cloth (2).

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