Filter components, washing machines

Abstract

To provide a filter member and a washing machine, capable of easily collecting captured yarn wastes or the like.SOLUTION: A filter member (40) detachably mounted on a filter case (30) having an inflow port (32) through which washing water flows in and an outflow port through which washing water flows out has a rib-shaped part (43) to partition neighboring open holes (50). The open hole (50) is tilted from the inner peripheral surface of the filter member (40).SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a filter member and a washing machine provided with the same. [Background technology]

[0002] In recent years, attention has been focused on biomimetics, a technology that mimics and utilizes the diverse functions of living organisms. Nature Technology (registered trademark) is known as an example of a manufacturing company that uses biomimetic technology in electrical products and other products.

[0003] Some washing machines are equipped with a filter member for capturing lint and other debris contained in the wash water (see, for example, Patent Document 1). The filter member is detachably mounted on a case member (filter case) into which wash water flows out from the bottom of the washing tub. The filter member has multiple square-shaped through holes that capture lint and other debris in the wash water. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-54107 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the above-mentioned conventional techniques, it is not necessarily easy to collect the captured lint and the like.

[0006] An object of one aspect of the present invention is to provide a filter member and a washing machine that can easily collect captured lint and the like. [Means for solving the problem]

[0007] In order to solve the above problems, a filter member according to one aspect of the present invention is a filter member that is detachably attached to a filter case that is formed with an inlet through which water flows in and an outlet through which water flows out, The flow passage has a shape extending from an upstream portion on the inlet side toward a downstream portion on the outlet side, The filter member has a rib-shaped portion that separates adjacent through holes, and the through holes are inclined from the inner peripheral surface of the filter member. and an outlet portion formed on the downstream side of the inlet portion and through which the water flows out. is doing.

[0008] In order to solve the above problem, a washing machine according to one aspect of the present invention includes the above filter member. [Effects of the Invention]

[0009] According to one aspect of the present invention, it is possible to provide a filter member and a washing machine that can easily collect captured lint and the like. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic diagram showing a configuration of a main part of a washing machine according to an embodiment of the present invention; [Figure 2] 2 is an exploded perspective view of a filter device provided in the washing machine shown in FIG. 1, seen obliquely from above. FIG. [Figure 3] 3 is a perspective vertical cross-sectional view showing the internal configuration of the filter device shown in FIG. 2. FIG. [Figure 4] 3 is a vertical cross-sectional view showing the internal configuration of the filter device shown in FIG. 2. FIG. [Figure 5] 3 is a cross-sectional view showing the internal configuration of the filter device shown in FIG. 2. FIG. [Figure 6] 3 is a perspective view showing a specific configuration of a filter member of the filter device shown in FIG. 2, viewed obliquely from below. FIG. [Figure 7] FIG. 5 is an enlarged view of an area B1 in FIG. [Figure 8] FIG. 6 is an enlarged view of an area B3 in FIG. 5. [Figure 9] 7 is a diagram illustrating the flow of washing water that has flowed into the filter member shown in FIG. 6. FIG. [Figure 10] 7A to 7C are diagrams illustrating a process of separating and capturing lint and the like by the filter member shown in FIG. 6. [Figure 11] 7A to 7C are diagrams illustrating a process of collecting lint and the like captured by the filter member shown in FIG. 6. [Figure 12] 7 is a diagram showing a state in which lint and the like are captured in the filter member shown in FIG. 6.

[0023] FIG. [Figure 13] 10 is a diagram showing a state in which lint and the like are captured in a conventional filter member having a plurality of square-shaped through holes. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] [Embodiment] Hereinafter, one embodiment of the present invention will be described in detail.

[0012] (Outline of washing machine) Fig. 1 is a schematic diagram showing the configuration of the main parts of a washing machine 1 according to this embodiment. As shown in Fig. 1, washing machine 1 includes a main body 2 and a door 3. Main body 2 includes a washing tub 4 therein, and a rotating drum 5 is rotatably provided inside washing tub 4. Washing tub 4 has an opening on the front side of main body 2, and when door 3 is closed, the interior is liquid-tightly sealed.

[0013] The washing tub 4 is connected to the filter device 20 via a first pipe 6 and a second pipe 7. A circulation pump 8 is provided in the middle of the second pipe 7. The first pipe 6, the second pipe 7, the filter device 20, and the circulation pump 8 form a circulation path for the washing water (water).

[0014] A third pipe 9 for drainage is further connected to the filter device 20. An electromagnetic valve 10 is provided midway along the third pipe 9. In FIG. 1, the second pipe 7 is connected to the rear side of the washing tub 4, but the connection point of the second pipe 7 to the washing tub 4 is not particularly limited.

[0015] During washing, washing water is circulated by closing electromagnetic valve 10 and operating circulation pump 8. Washing water is sent from washing tub 4 to filter device 20 via first piping 6, and returned from filter device 20 to washing tub 4 via second piping 7.

[0016] When draining, the washing water can be drained by stopping the circulation pump 8 and opening the solenoid valve 10. The washing water is sent from the washing tub 4 to the filter device 20 through the first pipe 6 and is then drained through the third pipe 9.

[0017] During both washing and draining, when the washing water passes through the filter device 20, lint and other trapped matter mixed in the washing water are trapped by the filter device 20.

[0018] (filter device) The configuration of filter device 20 according to the first embodiment will be described. Fig. 2 is an exploded perspective view of filter device 20 as seen obliquely from above. Fig. 3 is a perspective vertical cross-sectional view showing the internal configuration of filter device 20. In the following, the orientation of filter device 20 will be shown using the orientation of the filter device 20 when it is placed inside washing machine 1. In other words, the front corresponds to the front side of washing machine 1, and the rear corresponds to the rear side of washing machine 1.

[0019] As shown in Figures 2 and 3, filter device 20 includes filter case 30 and filter member 40 housed inside filter case 30. Filter case 30 is a cylindrical case member with a bottom, and houses filter member 40 inside. Filter case 30 is fixedly supported at the lower front side inside main body 2 (see Figure 1) of washing machine 1. Filter case 30 is arranged inside washing machine 1 so that the longitudinal axis of the cylindrical portion faces the front-rear direction of washing machine 1.

[0020] An insertion port 31 for inserting the filter member 40 is provided on the front side of the filter case 30. The filter member 40 is detachably attached to the filter case 30 through the insertion port 31.

[0021] A knob member 11 is attached to the front end of the filter member 40. Although not shown, a male thread is formed on the knob member 11, and a female thread is formed on the insertion port 31 of the filter case 30. By rotating the knob member 11 with the filter member 40 inserted into the filter case 30, the filter member 40 can be attached to or detached from the filter case 30.

[0022] The filter case 30 is formed with an inlet 32 ​​through which wash water flows in and outlets 33, 34 through which the wash water flows out. Specifically, the inlet 32 ​​and first and second outlets 33, 34 serving as outlets are formed on the side surface of the cylindrical portion of the filter case 30. The inlet 32 ​​is provided on the top surface of the filter case 30 and is connected to the first piping 6 (see FIG. 1) described above. The first and second outlets 33, 34 are provided on the lower side surface of the filter case 30. The first outlet 33 is connected to the second piping 7 (see FIG. 1) described above, and the second outlet 34 is connected to the third piping 9 (see FIG. 1) described above.

[0023] In this embodiment, the inlet 32 ​​has a shape in which the upper portion is tilted backward in a side view. Therefore, the wash water flows obliquely from the rear to the front through the inlet 32. Note that the inlet 32 ​​may be provided parallel to the up-down direction in a side view.

[0024] The filter member 40 is disposed within the filter case 30 so as to be positioned between the inlet 32 ​​and the first and second outlets 33 and 34. As a result, the filter member 40 can filter the wash water flowing from the inlet 32 ​​to the first outlet 33 during washing, and can filter the wash water flowing from the inlet 32 ​​to the second outlet 34 during drainage.

[0025] (filter component) The configuration of the filter member 40 according to the first embodiment will be described. Fig. 4 is a longitudinal sectional view showing the internal configuration of the filter device 20. Note that the cutting positions are different between Fig. 3 and Fig. 4. Fig. 5 is a transverse sectional view showing the internal configuration of the filter device 20. Fig. 6 is a perspective view seen from diagonally below showing the specific configuration of the filter member 40 of the filter device 20. Fig. 7 is an enlarged view of region B1 in Fig. 4. Fig. 8 is an enlarged view of region B3 in Fig. 5.

[0026] 4 to 6, the filter member 40 has a base portion 41 to which the above-mentioned knob member 11 is attached, and a filter portion 42 extending rearward from the base portion 41. The filter portion 42 has a box shape with one side open. The filter member 40 is attached inside the filter case 30 with the open side of the filter portion 42 facing upward.

[0027] The filter member 40 has a shape that extends from an upstream portion on the inlet 32 ​​side toward a downstream portion on the outlets 33, 34 side. The wash water that flows into the filter member 40 from the inlet 32 ​​flows from one end to the other in the longitudinal direction of the filter member 40. Hereinafter, this flow from one end to the other in the longitudinal direction of the filter member 40 will be referred to as the main water flow. The upstream portion can be rephrased as the upstream side of the main water flow.

[0028] A plurality of through holes 50 are provided in the filter portion 42 of the filter member 40. The through holes 50 are holes that penetrate the filter member 40 from its inner peripheral surface to its outer peripheral surface. Adjacent through holes 50, 50 are separated by rib-shaped portions 43. In other words, the filter member 40 has rib-shaped portions 43 that separate adjacent through holes 50, 50.

[0029] In this embodiment, the filter member 40 has a bottom portion 40a, left and right side portions 40b, and a rear portion 40c, and the bottom portion 40a and the left and right side portions 40b are each formed with a rib-shaped portion 43 and a through-hole 50.

[0030] Specifically, the bottom 40a has a plurality of bottom through-holes 51 as the plurality of through-holes 50, which are arranged side by side in the longitudinal direction of the filter member 40. The bottom rib-shaped portions 44 as the rib-shaped portions 43 are located between adjacent bottom through-holes 51, 51. The bottom rib-shaped portions 44 extend in the left-right direction, that is, in the width direction perpendicular to the longitudinal direction of the filter member 40, and are arranged side by side in the longitudinal direction of the filter member 40.

[0031] A plurality of side through holes 52 are formed as a plurality of through holes 50 in the left and right side portions 40b, and are arranged side by side in the longitudinal direction of the filter member 40. Side rib-shaped portions 45 as rib-shaped portions 43 are located between adjacent side through holes 52, 52. The side rib-shaped portions 45 extend in the up-down direction, that is, in the height direction perpendicular to the longitudinal direction of the filter member 40, and are arranged side by side in the longitudinal direction of the filter member 40.

[0032] The plurality of through holes 50, that is, the plurality of bottom through holes 51 and the plurality of side through holes 52, are provided at an angle from the inner circumferential surface of the filter member 40. The inner circumferential surface of the filter member 40 is the inner surface of the filter section 42, which has a box-like shape with one side open. The surface opposite the inner circumferential surface is the outer circumferential surface of the filter member 40. Therefore, the inner circumferential surface of the bottom portion 40a corresponds to the upper surface of the bottom portion 40a, and the outer circumferential surface of the bottom portion 40a corresponds to the lower surface of the bottom portion 40a.

[0033] The bottom through-holes 51 are inclined in the same direction as each other, and the side through-holes 52 are also inclined in the same direction as each other. In other words, the bottom rib shapes 44 are inclined in the same direction as each other, and the side rib shapes 45 are also inclined in the same direction as each other.

[0034] In the following description, when there is no need to distinguish between the plurality of bottom through-holes 51 and the plurality of side through-holes 52, they will be collectively referred to as the plurality of through-holes 50. Similarly, when there is no need to distinguish between the plurality of bottom rib-shaped portions 44 and the plurality of side rib-shaped portions 45, they will be collectively referred to as the plurality of rib-shaped portions 43.

[0035] 7 and 8, the through-hole 50 has an inlet portion 50a through which the wash water flows in and an outlet portion 50b through which the wash water flows out. The inlet portion 50a is located on the inner circumferential surface of the filter member 40, and the outlet portion 50b is located on the outer circumferential surface of the filter member 40. In this embodiment, the outlet portion 50b is formed to be located downstream of the inlet portion 50a on the side of the filter case 30 where the outlets 33, 34 (see FIG. 2) are located. In other words, the through-hole 50 is inclined in the flow direction of the main water flow.

[0036] The rib-shaped portion 43 has an upstream surface 43a facing the upstream portion, a downstream surface 43b facing the downstream portion, and a top surface 43c located on the inner circumferential surface of the filter member 40. Because the rib-shaped portion 43 is also inclined in the flow direction of the main water flow, a corner C where the top surface 43c of the rib-shaped portion 43 and the upstream surface 43a intersect is an acute angle.

[0037] (Description of effects) Fig. 9 is a diagram illustrating the flow of wash water that has flowed into the filter member 40. In Fig. 9, arrow Y1 indicates the flow of the main water flow that has flowed in through the inlet 32 ​​(see Fig. 2) of the filter case 30. Arrow Y2 indicates the flow of wash water that passes through the bottom through-hole 51. Arrow Y3 indicates the flow of the main water flow that passes through the bottom through-hole 51 and passes through the lower part of the filter case 30 toward the outlets 33, 34 (see Fig. 2).

[0038] As shown in FIG. 9, the washing water that flows into the filter case 30 flows downstream along the upper surface of the bottom 40a (Y1), passes through the multiple bottom through-holes 51 (Y2), and flows out through the lower part of the filter case 30 (Y3).

[0039] FIG. 10 is a diagram illustrating the process of separating and capturing lint and the like using the filter member 40. As shown in FIG. 10, lint and the like 80 contained in the main water flow are caught and captured by the bottom rib-shaped portion 44 as the main water flow flows into the bottom through-hole 51. The lint is caught along the flow direction of the main water flow and captured in a uniform orientation. The bottom rib-shaped portion 44 has an acute angle at the corner C where the top surface 43c and the upstream surface 43a intersect, so that the lint and the like 80 can be entangled more effectively than if the corner C were an obtuse angle or a right angle.

[0040] FIG. 11 is a diagram illustrating the process of collecting lint and other debris captured by the filter member 40. As shown in FIG. 11, the collected lint and other debris 80 is collected by running a finger or other finger over the bottom 40a of the filter member 40 in the direction opposite to the main water flow. The lint and other debris 80 are captured in the same orientation, so they can be easily collected by running a finger or other finger over the bottom 40a in one direction. The running finger direction during collection is the direction in which the lint and other debris 80 are pulled out along the slope of the bottom through-hole 51.

[0041] FIG. 12 is a diagram showing a state in which lint, etc. 80 is captured in the filter member 40. FIG. 13 is a diagram showing a state in which lint, etc. 80 is captured in a conventional filter member 100 having multiple square-shaped through holes 101. As shown in FIG. 12, in the filter member 40, the bottom through holes 51 are adjacent to each other in the direction of the main water flow. Therefore, even if the lint, etc. 80 is long, it is unlikely that the lint, etc. 80 will reach the underside of the bottom 40a and become entangled around the bottom rib-shaped portion 44, but will instead be caught across multiple bottom rib-shaped portions 44. Furthermore, even if the lint, etc. 80 becomes entangled in the bottom rib-shaped portion 44, it is captured along the slope of the bottom rib-shaped portion 44, and can easily be pulled out of the bottom through hole 51 by following the slope.

[0042] In contrast, in the case of a conventional filter member 100 in which a plurality of square-shaped through holes 101 are arranged in a grid pattern in the front-to-back and left-to-right directions as shown in Figure 13, if the lint, etc. 80 is long, it will be captured in a state where it is entangled in the plurality of square-shaped through holes 101 located above, below, left, and right. Therefore, it cannot be collected by simply tracing it in one direction, and it is necessary to pull from both sides of the filter member 100 to untangle and remove the lint.

[0043] Although the effects have been explained using FIG. 9, the side through-holes 52 and the side rib-shaped portions 45 naturally have the same effects as the bottom through-holes 51 and the bottom rib-shaped portions 44.

[0044] (additional configuration) Furthermore, in this embodiment, the filter member 40 further has the following configurations 1) to 8).

[0045] 5 and 7, in a plan view seen from the top surface of the bottom 40a, the outlet portion 50b of the bottom through-hole 51 is covered and hidden by the bottom rib-shaped portion 44. In other words, the filter member 40 is formed so that the inlet portion 50a and the outlet portion 50b of the same bottom through-hole 51 do not overlap with each other in a plan view seen from the top surface of the bottom 40a.

[0046] According to the above configuration, the depth of the bottom through-hole 51 is ensured, and lint and the like can be effectively captured. Furthermore, the outlet portion 50b of the bottom through-hole 51 is not visible in a plan view seen from the top surface of the bottom 40a, which gives the user the impression that the capturing effect is excellent.

[0047] For convenience, detailed explanation will not be provided, but as shown in Figure 8, in the side through-hole 52, when viewed in a plan view from the inner surface of the side 40b, the outflow portion 50b is also covered and hidden by the side rib-shaped portion 45, thereby achieving the same effect.

[0048] 7, when the thickness of the bottom 40a is H1 and the width of the inlet portion 50a between adjacent bottom rib-shaped portions 44, 44 is W1, the thickness H1 of the bottom through-hole 51 is greater than the width W1. In other words, the bottom through-hole 51 in the filter member 40 is formed so that the width W1 of the inlet portion 50a is smaller than the thickness H1 of the bottom 40a.

[0049] The depth of the bottom through-hole 51 depends on the thickness of the bottom 40 a. According to the above-described configuration, the depth of the bottom through-hole 51 is ensured, and even if the lint 80 is long and easily tangled, it can be effectively prevented from wrapping around the bottom rib-shaped portion 44 and becoming tangled, and can be captured in a state that is easy to collect.

[0050] For convenience, detailed explanation will not be provided, but as shown in FIG. 8, the side through-hole 52 is also formed so that the width W1' of the inlet portion 50a is smaller than the thickness H1' of the side portion 40b, thereby achieving the same effect.

[0051] 7, when the width of the inlet portion 50a is W1 and the width of the bottom rib-shaped portion 44 between adjacent inlet portions 50a, 50a is W2, the width W2 of the bottom through-hole 51 is larger than the width W1. In other words, the bottom through-hole 51 in the filter member 40 is formed so that the width W1 of the inlet portion 50a is smaller than the width W2 of the bottom rib-shaped portion 44.

[0052] According to the above configuration, by narrowing the width W1 of the inlet portion 50a, it is possible to increase the number of bottom through-holes 51 arranged in the direction of the main water flow that has flowed into the filter member 40. This increases the opening rate in the bottom portion 40a, thereby improving both the capture rate and drainage performance.

[0053] For convenience, detailed explanation will not be given, but the side through-hole 52 may also be formed so that the width W1' of the inlet portion 50a is smaller than the width W2' of the side rib-shaped portion 45, in which case the same effect is achieved.

[0054] 7, the opening area of ​​the outlet portion 50b of the bottom through-hole 51 is larger than the opening area of ​​the inlet portion 50a. That is, the bottom through-hole 51 of the filter member 40 is formed so that the hole size increases from the upper surface of the bottom 40a toward the lower surface of the bottom 40a.

[0055] According to the above configuration, the bottom through-holes 51 widen toward the lower surface of the bottom 40a, so that the flow velocity of the flow arrow Y2 branching off from the main water flowing on the upper surface of the bottom 40a and flowing into the bottom through-hole 51 is faster on the downstream surface 43b, which is located in the direction of the main water flow, than on the upstream surface 43a, which is located on the opposite side. As a result, a vortex 55 is formed near the inlet portion 50a of the bottom through-hole 51. The formation of the vortex 55 makes it difficult for lint, etc. 80 to flow into the bottom through-hole 51. As a result, the lint, etc. 80 is prevented from passing through the bottom through-hole 51, improving the capture rate.

[0056] For convenience, detailed explanation will not be provided, but as shown in FIG. 8, the side through-hole 52 is also formed so that the size of the hole increases from the inner surface of the side portion 40b toward the outer surface of the side portion 40b, achieving the same effect.

[0057] 7, in the bottom through-hole 51, the downstream surface 43b has a first surface 43b1 inclined at a first angle and a second surface 43b2 that is provided closer to the outflow section 50b than the first surface 43b1 and forms an obtuse angle with the first surface 43b1. The obtuse angle formed by the first surface 43b1 and the second surface 43b2 forms a bent shape 56.

[0058] In other words, the filter member 40 has a curved shape 56 that is convex in the direction of the main water flow on the downstream surface 43b of the bottom rib-shaped portion 44, or on the portion including the downstream surface 43b and the top surface 43c where the downstream surface 43b intersects with the downstream surface 43b.

[0059] According to the above configuration, the bent shape 56 can draw the flow arrow Y2 branching off from the main water flow flowing on the upper surface of the bottom 40a into the bottom through-hole 51 at a high flow rate. This allows a larger vortex 55 to be formed, further improving the capture rate.

[0060] Although detailed description will not be given for the sake of convenience, the bent shape 56 may also be formed on the downstream surface 43b of the side through-hole 52. In this case, the same effect is achieved.

[0061] Configuration 6) Furthermore, in this case, the first surface 43b1 may be exposed in a plan view seen from the top surface of the bottom 40a, as shown in Fig. 7. In other words, the top surface 43c of the bottom rib-shaped portion 44 and the first surface 43b1 may form an obtuse angle, forming a curved surface shape 57 that is convex upward.

[0062] According to the above configuration, the bottom rib-shaped portion 44 has a curved surface 57 that is convex upward on the upper surface of the bottom 40a, so that a force acts more easily in the pressing direction when tracing and collecting lint scraps 80 than when the upper surface of the bottom rib-shaped portion 44 is flat. As a result, it is even easier to trace and collect lint scraps 80.

[0063] Although detailed description will not be given for convenience, the side rib shape portion 45 may also be provided so that the top surface 43c of the side rib shape portion 45 and the first surface 43b1 form an obtuse angle, forming an inwardly convex curved surface 57. In this case, the same effect is achieved.

[0064] Configuration 7) As shown in FIGS. 3 to 5, the filter member 40 has a curved surface portion 40d extending upward from the bottom portion 40a, further upstream than the region where the bottom through-holes 51 are formed.

[0065] According to the above configuration, the water that flows in hits the curved surface portion 40d, so that the wash water that flows in from the inlet 32 ​​can be smoothly guided to the area where the plurality of through holes 50 are formed. When sweeping or collecting lint and the like 80, the curved surface portion 40d can be used to smoothly remove them.

[0066] Configuration 8) Furthermore, as shown in Figures 3 and 5, the curved surface portion 40d is formed with an indicator 58 that indicates the direction in which to remove the captured material, i.e., lint scraps 80. Since the curved surface portion 40d is the position that is traced when collecting lint scraps 80, providing the indicator 58 at this position makes it easy to see, and the user can intuitively know the direction to trace and perform the collection operation. Note that the position where the indicator 58 is provided is not limited to the curved surface portion 40d. The indicator 58 may be formed in any manner, such as by stamping, printing, or by a sticker.

[0067] The above-described configurations 1) to 8) may be provided all at the same time, or may be provided selectively within a range of possible combinations. In addition, in this embodiment, the inclination direction of the plurality of through holes 50 is set to the direction of flow of the main water current, but by providing the plurality of through holes 50 with an inclination in at least the same direction, it is possible to recover the lint, etc. 80 captured by the rib-shaped portion 43 by tracing the recovery.

[0068] This configuration allows for the effective removal of lint and other foreign matter from the wash water before draining it. This effect also contributes to the achievement of Goal 6 of the United Nations' Sustainable Development Goals (SDGs), such as "Ensure availability and sustainable management of water and sanitation for all."

[0069] 〔summary〕 The filter member according to the present disclosure is a filter member that is detachably attached to a filter case that has an inlet for water flowing in and an outlet for water flowing out, and has a rib-shaped portion that separates adjacent through holes, and the through holes are inclined from the inner peripheral surface of the filter member. This configuration makes it easy to collect captured lint and the like. Such a filter member may be provided in a washing machine.

[0070] For example, the filter member may have a shape extending from an upstream portion on the inlet side toward a downstream portion on the outlet side, and the through hole may have an inlet portion through which water flows in and an outlet portion formed on the downstream side of the inlet portion through which water flows out.

[0071] For example, the through hole may have a bottom through hole provided at the bottom of the filter member, and in a planar view from the top surface of the bottom, the outflow portion of the bottom through hole may be covered and hidden by the rib-shaped portion.

[0072] Further, for example, the thickness of the bottom portion may be greater than the width of the inlet portion between adjacent rib-shaped portions. The width of the inlet portion may be greater than the width of the rib-shaped portions between adjacent inlet portions. The through-hole may have an outlet portion with an opening area greater than the inlet portion.

[0073] Further, for example, the rib-shaped portion may have an upstream surface facing the upstream portion and a downstream surface facing the downstream portion, and the downstream surface may have a first surface inclined at a first angle and a second surface provided closer to the outflow portion than the first surface and forming an obtuse angle with the first surface. Here, the first surface may be exposed in a plan view seen from above the top surface of the bottom.

[0074] Further, for example, a curved surface portion extending upward from the bottom portion may be formed in the upstream portion of the area where the bottom through-hole is formed. Furthermore, an indicator portion indicating the direction in which the captured object is to be removed may be formed on the curved surface portion.

[0075] This disclosure includes a technical idea that focuses on the structure of the gills of manta rays, which means that this disclosure relates to biomimetics.

[0076] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment. [Explanation of symbols]

[0077] 1 washing machine 4 Washing machine 5 rotating drum 6. First Pipe 7 Second piping 9. Third Pipe 20 Filter device 30 Filter Case 32 Inlet 33 1st outlet (outlet) 34 2nd outlet (outlet) 40 Filter member 40a bottom 40b Side 40c rear 40d curved part 42 Filter section 43 Rib-shaped section 43a Upstream face 43b downstream face 43c top surface 44 Bottom rib-shaped portion (rib-shaped portion) 45 Side rib-shaped portion (rib-shaped portion) 50 through holes 50a Inlet 50b Outlet 51 Bottom through hole (through hole) 52 Side through hole (through hole) 55 Vortex 56 Bent shape 57 Curved shape 58 Display section 80 Thread waste, etc.

Claims

1. A filter member that is detachably attached to a filter case that has an inlet through which water flows in and an outlet through which water flows out, The flow passage has a shape extending from an upstream portion on the inlet side toward a downstream portion on the outlet side, A rib-shaped portion that separates adjacent through holes is provided, The through hole is inclined from the inner surface of the filter member and has an inlet portion through which water flows in and an outlet portion formed downstream of the inlet portion through which water flows out.

2. the through-hole includes a bottom through-hole provided in a bottom portion of the filter member, The filter member according to claim 1 , wherein the outlet portion of the bottom through-hole is covered and hidden by the rib-shaped portion in a plan view seen from above the bottom portion.

3. 3. The filter element according to claim 2, wherein the thickness of the bottom portion is greater than the width of the inlet portion between adjacent rib-shaped portions.

4. The filter member according to claim 3 , wherein the width of the inlet portion is smaller than the width of the rib-shaped portion between adjacent inlet portions.

5. The filter member according to claim 4 , wherein the through-hole has an opening area of ​​the outlet portion larger than an opening area of ​​the inlet portion.

6. the rib-shaped portion has an upstream surface facing the upstream portion and a downstream surface facing the downstream portion, 6. The filter element according to claim 5, wherein the downstream surface has a first surface inclined at a first angle and a second surface provided closer to the outlet portion than the first surface and forming an obtuse angle with the first surface.

7. The filter member according to claim 6 , wherein the first surface is exposed in a plan view seen from above the bottom portion.

8. The filter element according to claim 7 , wherein a curved surface portion extending upward from the bottom is formed in the upstream portion of the filter element further upstream than the region where the bottom through-hole is formed.

9. The filter member according to claim 8, wherein the curved surface is formed with an indicator that indicates the direction in which the trapped matter is to be removed.

10. A washing machine comprising the filter member according to any one of claims 1 to 9.

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