Filter cleaning device

Abstract

To provide a filter cleaning device capable of improving dust removing performance by surely removing dust adhering to a rotary cleaning body with a dust removing body.SOLUTION: A filter cleaning device 10 has a filter body, a rotary cleaning body 2 which abuts on the filter body and removes dust adhering to the filter body, and a dust removing body 20 which comes into contact with the rotary cleaning body 2 and removes the dust transferred from the filter body to the rotary cleaning body 2. The dust removing body 20 has a comb tooth shape having a plurality of dust removing pieces 21 and 22. A projecting direction of the dust removing pieces 21 and 22 is formed so as to be substantially orthogonal to a longitudinal direction of a shaft, and two kinds of the dust removing pieces 21 and 22 having different lengths are continuously formed.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a filter cleaning device for removing dust adhering to a filter. [Background technology]

[0002] Conventionally, a filter for collecting dust has been installed, and a filter cleaning device for removing dust adhering to this filter has been known (Patent Document 1).

[0003] The filter cleaning device described in Patent Document 1 has a dust removal mechanism of a rotating cleaning body for removing dust and other particles adhering to the surface to be cleaned, the dust removal mechanism having a rotating cleaning body with a spirally formed cleaning body, and a dust removing body for removing dust and other particles adhering to the rotating cleaning body, the dust removing body having a dust removing section formed by a plurality of comb teeth that abuts against the rotating cleaning body, and a valley section formed between the comb teeth, the dust removing section being inclined toward the longitudinal direction of the rotation axis of the rotating cleaning body, and the dust removing section abuts against the cleaning body at an inclination in the same direction as the inclination of the spiral of the spirally formed cleaning body.

[0004] As a result, compared to a dust removal section that is not inclined, the dust removal body can remove dust using more of its side surfaces, thereby improving dust removal performance. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2017-213558 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the filter cleaning device described in Patent Document 1, if the width of the valley portion formed between the comb teeth of the dust remover is too wide, the bristles that make up the rotating cleaning body will enter one valley portion in a bundle, making it impossible to remove dust entangled in this bristle bundle, and therefore it is not possible to improve dust removal performance.

[0007] On the other hand, if the width of the valleys formed between the comb teeth of the dust removing body is too narrow, a large amount of bristles will not enter the valleys, and most of the dust adhering to the bristles cannot be removed, making it impossible to improve dust removal performance.

[0008] The present invention is devised to solve the above-mentioned problems of the conventional art, and aims to provide a filter cleaning device that can improve dust removal performance by reliably removing dust attached to a rotating cleaning body using a dust remover. [Means for solving the problem]

[0011] Claim 1The invention relates to a filter cleaning device having a filter body that captures dust, a rotating cleaning body that comes into contact with the filter body and removes dust adhering to the filter body, and a dust removing body that comes into contact with the rotating cleaning body and removes dust transferred from the filter body to the rotating cleaning body, wherein the rotating cleaning body is composed of a rod-shaped shaft and a brush having a plurality of bristles formed on the outer periphery of the shaft, the dust removing body is comb-shaped with a plurality of dust removing pieces, the protruding direction of the dust removing pieces is formed approximately perpendicular to the longitudinal direction of the shaft, the dust removing pieces are formed in two types of different lengths, namely a plurality of approximately identical long dust removing pieces and a plurality of approximately identical short dust removing pieces, the length of the long dust removing pieces is 1.5 to 3.0 times the length of the short dust removing pieces, the tips of the long dust removing pieces are approximately arc-shaped, both side sides are approximately parallel, and the angle between the side sides of the long dust removing pieces and the side sides of the short dust removing pieces is an acute angle. As a result, the brush that constitutes the rotating cleaning body can more easily remove dust adhering to the bristles, since the long dust-removing pieces prevent the bristles from spreading and guide them into the narrow valleys between the short dust-removing pieces. Also, the long dust-removing pieces can push aside the bristles without damaging them.

[0013] Claim 2 The invention of claim 1 is characterized in that the tip of the short dust-removing piece abuts the tip side of the bristles rather than the tip of the long dust-removing piece. This makes it easy to remove dust adhering to the bristles by pushing aside the tip side of the bristles with the short dust-removing piece and guiding them into a narrow valley.

[0018] Claim 3 The invention of claim 1 or 2The invention is characterized in that there are two dust removing bodies, the longitudinal directions of the dust removing bodies are arranged substantially parallel to each other and facing each other, and when one of the dust removing pieces formed at the opposing positions of the dust removing bodies is a long dust removing piece, the other is a short dust removing piece. As a result, by repeatedly rotating the rotating cleaning body forward and backward, dust attached to the rotating cleaning body can be evenly removed by the two dust removing bodies. Effect of the Invention

[0019] The invention of the filter cleaning device of claim 1 can reliably remove dust adhering to the bristles in the process of the bristles being guided into the wide valley between the long dust-removing pieces and then reaching the narrow valley between the short dust-removing pieces and the adjacent long dust-removing pieces, thereby improving dust removal performance. 1 and 2 According to the invention, by guiding the bristles into the narrow valleys, dust adhering to the bristles can be easily removed.

[0020] Also, claims 1 In the invention, the bristles constituting the rotating cleaning body are prevented from spreading by the long dust-removing pieces and are guided to the narrow valleys between the short dust-removing pieces, so that dust adhering to the bristles can be removed more easily. Also, the bristles can be pushed aside without being damaged and the bristles can be prevented from spreading.

[0021] Claim 3 In this invention, by repeatedly rotating the rotating cleaning body forward and backward, dust adhering to the rotating cleaning body can be evenly removed by the two dust removing bodies. [Brief description of the drawings]

[0022] [Figure 1] (a) Perspective view of the filter cleaning device. (b) Cross-sectional view taken along the line AA in (a). [Diagram 2] A partially enlarged plan view of the filter cleaning device [Diagram 3] (a) Perspective view of the dust remover (b) Front view of the dust remover [Figure 4] (a) to (e) Cross-sectional views showing the process of dust removal by the dust remover DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the present invention is not limited to this embodiment. Fig. 1(a) is a perspective view of a filter cleaning device according to the present invention, and Fig. 1(b) is a cross-sectional view taken along line AA in Fig. 1(a). The outline of the filter cleaning device according to the present invention will be described below with reference to these drawings.

[0024] The filter cleaning device 10 comprises a filter body 1, a rotary cleaning body 2 that comes into contact with the filter body 1 and removes dust adhering to the filter body 1, a dust box 3, and dust removers 20a, 20b that are installed in the dust box 3, come into contact with the rotary cleaning body 2, and remove dust transferred from the filter body 1 to the rotary cleaning body 2, and the rotary cleaning body 2, dust box 3, and dust removers 20a, 20b form a cleaning device main body 10a. The rotary cleaning body 2 comprises a rod-shaped shaft 2a and a brush 2b having a plurality of bristles 8, 8... formed on the outer periphery of the shaft 2a.

[0025] The cleaning device main body 10a is provided with a gear A5 that rotates while meshing with racks 4, 4 arranged along the left and right longitudinal directions of the filter body 1, a gear B6 that meshes with the gear A5 and rotates with the rotation of the gear A5, and a gear C7 that rotates with a motor (not shown), so that the rotation of the gear C7 rotates the gear A5. The gear B6 is connected to the shaft 2a of the rotating cleaning body 2, so that the rotating cleaning body 2 rotates when the gear B6 rotates.

[0026] As a result, the cleaning device main body 10a moves along the longitudinal direction of the filter body 1 in unison with the rotation of the gear A5. The gear B6 meshing with the gear A5 also rotates, and the connected rotating cleaning body 2 rotates. The filter body 1 includes a filter 1a and a lattice frame 1b that divides the filter 1a into a plurality of sections. In addition, by using a stepping motor as a motor (not shown) to rotate in the reverse direction, the cleaning device main body 10a can be moved in the opposite direction to the moving direction indicated by the arrow in FIG. 1(b), and in that case, the rotating cleaning body 2 also rotates in the reverse direction. As a result, the cleaning device main body 10a can be reciprocated in the longitudinal direction of the filter body 1 to reliably remove dust adhering to the filter.

[0027] The dust removing bodies 20a and 20b are attached at positions facing each other at the opening of the dust box 3, with the dust removing body 20a attached at a higher position (closer to the filter body 1) than the dust removing body 20b. The inclination angle of the dust removing body 20a with respect to the longitudinal direction of the filter body 1 is larger than the inclination angle of the dust removing body 20b. In the rotation direction of the rotating cleaning body 2 shown by the arrow in FIG. 1(b), the dust removing body 20a mainly contributes to the removal of the dust 9 transferred to the rotating cleaning body 2. On the other hand, when the rotation direction of the rotating cleaning body 2 is reversed, the dust removing body 20b contributes to the removal of the dust 9.

[0028] Fig. 2 is a plan view of an enlarged portion of the filter cleaning device, and for the sake of explanation, some of the bristles constituting the rotating cleaning body are omitted. Fig. 3(a) is a perspective view of the dust removing body, and Fig. 3(b) is a front view of the dust removing body. The details of the filter cleaning device according to the present invention will be described below using these figures.

[0029] The dust removing bodies 20a, 20b are comb-shaped and have a plurality of dust removing pieces 21, 22, and the protruding direction of the dust removing pieces 21, 22 is formed so as to be approximately perpendicular to the longitudinal direction of the shaft 2a. The dust removing pieces 21, 22 are formed by alternating two types of dust removing pieces with different lengths, and one short dust removing piece 22 is formed between the adjacent long dust removing pieces 21, 21. As a result, a wide valley portion 23 is formed between the adjacent long dust removing pieces 21, 21, and a narrow valley portion 24 is formed between the long dust removing piece 21 and the short dust removing piece 22. Therefore, by guiding the bristles 8 from the wide valley portion 23 to the narrow valley portion 24, the dust 9 attached to the bristles 8 can be easily removed. The dust removing pieces 21, 22 are not limited to two types with different lengths, and the present invention includes any types of dust removing pieces having more than two lengths. Further, a dust remover in which two or more short dust removing pieces 22 are formed between adjacent long dust removing pieces 21, 21 is also included in the present invention.

[0030] The filter cleaning device has two dust removing bodies 20a, 20b, which are arranged facing each other with their longitudinal directions being approximately parallel to each other, and the dust removing pieces 21, 22 formed at the opposing positions of each dust removing body 20a, 20b are arranged so that when one is a long dust removing piece 21, the other is a short dust removing piece 22. As a result, by repeatedly rotating the rotating cleaning body 2 forward and backward, dust adhering to the rotating cleaning body 2 can be evenly removed by the two dust removing bodies 20a, 20b.

[0031] The protruding direction of the dust removing pieces 21, 22 is formed to be approximately parallel to the longitudinal direction of the bristles 8 at the positions where the bristles come into contact with the dust removing pieces 21, 22. This makes it easy to guide the bristles coming into contact with the tips of the dust removing pieces 21, 22 to the valleys 23, 24 formed between the adjacent dust removing pieces 21, 22.

[0032] In addition, the tip of the short dust removing piece 22 is made to abut against the tip side of the bristles 8 rather than the tip of the long dust removing piece 21. This allows the tip side of the bristles 8 to be pushed aside by the short dust removing piece 22 and guided to the narrow valley 24, making it easy to remove dust adhering to the bristles 8. Also, by abutting the long dust removing piece 21 against the base side of the bristles 8, the tip of the bristles 8 is greatly tilted, making it easy to loosen the dust 9. Furthermore, when the short dust removing piece 22 directly abuts against the dust 9 adhering to the tip of the bristles 8, the dust 9 can be removed more easily.

[0033] The length of the long dust removing pieces 21 is preferably 1.5 to 3.0 times the length of the short dust removing pieces 22. As a result, the brush 2b constituting the rotating cleaning body 2 has the bristles 8 prevented from spreading by the long dust removing pieces 21 and guided to the narrow valleys 24 between the short dust removing pieces 22, so that dust adhering to the bristles 8 can be removed more easily.

[0034] In addition, the long dust removal piece 21 has a generally arc-shaped tip and both sides are generally parallel to each other, so that it can push aside the bristles without damaging them and prevent them from spreading.

[0035] On the other hand, the short dust-removing pieces 22 have a generally triangular tip, which narrows the valleys 24 to guide the bristles, making it easier to remove dust adhering to the bristles.

[0036] Similarly, the angle between the side of the long dust removing piece 21 and the side of the short dust removing piece 22 is an acute angle. This narrows the valley and guides the bristles, making it easier to remove dust adhering to the bristles.

[0037] 4(a) to (e) are cross-sectional views showing the process of dust removal by the dust remover. The process of dust removal by the dust remover will be described below with reference to these figures.

[0038] First, as shown in Fig. 4(a), dust 9 (mainly lint) of various lengths is attached in a tangled state to the bristles 8 constituting the rotating cleaning body. Then, as shown in Fig. 4(b), when the multiple bristles 8, 8... reach the tip of the long dust-removing piece 21, they are pushed to the left and right from the tip of the long dust-removing piece 21 and move to a wide valley 23 formed between the adjacent long dust-removing pieces 21. Also, some of the dust 9 attached to the bristles 8 are caught on the tip of the long dust-removing piece 21. By pushing the bristles to the left and right, some of the dust 9 tangled in the bristles 8 is loosened, making it easier to be caught by the long dust-removing body 21.

[0039] Next, as shown in Fig. 4(c), the bristles 8, 8... are guided downward while contacting the side of the long dust removing piece 21, and reach the narrow valley 24 formed between the long dust removing piece 21 and the short dust removing piece 22. At this time, the dust 9 adhering to the bristles 8 is caught by the long dust removing piece 21 and the short dust removing piece 22 and is separated from the bristles 8. When the bristles 8, 8... move to the wide valley 23, the side of the adjacent long dust removing piece 21, 21 becomes a wall and the bristles are prevented from spreading, so that they come into strong contact with the short dust removing piece 22 and can effectively catch the dust 9.

[0040] After the bristles 8 reach the base of the narrow valley 24, they are separated from the dust removing body 20a (20b), and as shown in Fig. 4(d), only the dust 9 is caught in the narrow valley 24 formed by the long dust removing piece 21 and the short dust removing piece 22. By repeating this operation, the dust 9 is accumulated at the base of the dust removing pieces 21, 22, as shown in Fig. 4(e).

[0041] 1(b), the dust 9 accumulated at the base of the dust removing pieces 21, 22 is transferred toward the bottom of the dust box by its own weight and by being pushed into the bristles 8, and the inside of the dust box becomes filled with dust 9. Since the dust removing pieces 21 are longer than the dust removing pieces 22, even if a certain amount of dust 9 accumulates, the dust removing pieces 21 are not completely filled up, and the dust 9 is transferred into the dust box, so that the dust removal performance can be maintained for a long period of time. [Industrial Applicability]

[0042] The filter cleaning device according to the present invention is mounted on an air conditioner or an air purifier and is used to remove dust adhering to a filter. [Explanation of symbols]

[0043] 1 Filter body 1a Filter 1b Lattice frame 2 Rotating cleaning body 2a shaft 2b Brush 3 Dustbin 4 Rack 5 Gear A 6 Gear B 7 Gear C 8 Hair material 9 Dust 10 Filter cleaning device 10a Cleaning device body 20a, 20b Dust remover 21 Long dust removal strip 22 Short dust removal strip 23 Wide Valley 24 Narrow Valley

Claims

1. A filter body for capturing dust; a rotating cleaning body that comes into contact with the filter body and removes dust adhering to the filter body; a dust removing body that comes into contact with the rotary cleaning body and removes dust transferred from the filter body to the rotary cleaning body, The rotary cleaning body is composed of a rod-shaped shaft and a brush having a plurality of bristles formed on the outer periphery of the shaft, The dust removing body is a comb-like shape having a plurality of dust removing pieces, and the protruding direction of the dust removing pieces is formed to be approximately perpendicular to the longitudinal direction of the shaft, The dust removing pieces are formed in two types, namely, a plurality of substantially identical long dust removing pieces and a plurality of substantially identical short dust removing pieces, which are different in length, and the length of the long dust removing pieces is 1.5 times or more and 3.0 times or less than the length of the short dust removing pieces, The long dust-removing piece has a generally arc-shaped tip and both sides are generally parallel to each other, a filter cleaning device, characterized in that an angle between a side edge of the long dust removing piece and a side edge of the short dust removing piece is an acute angle;

2. 2. The filter cleaning device according to claim 1, wherein the tip of the short dust-removing piece abuts on the tip side of the bristles rather than the tip of the long dust-removing piece.

3. 3. The filter cleaning device according to claim 1, further comprising: two dust removing bodies, the longitudinal directions of the dust removing bodies being substantially parallel to each other and arranged to face each other; and when one of the dust removing pieces is a long dust removing piece, the other is a short dust removing piece formed at the opposing position of each dust removing body.

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