CN110158271B - Drum washing machine and door seal thereof - Google Patents

Abstract

The invention discloses a drum washing machine and a door seal thereof, wherein the drum washing machine comprises: an outer tub; the inner barrel is rotatably arranged in the outer barrel; the door body is used for opening and closing the outer barrel; the door seal is arranged on the outer barrel; the water guiding edge is arranged on the door seal or the outer barrel, at least one part of the water guiding edge extends into the inner barrel, and the water guiding edge guides water between the front wall of the outer barrel and the door seal into the inner barrel. The drum washing machine provided by the embodiment of the invention has the advantages of good washing effect, clean and healthy washing environment and the like.

Description

Drum washing machine and door seal thereof

Technical Field

The invention relates to the technical field of electric appliance manufacturing, in particular to a roller washing machine and a door seal for the roller washing machine.

Background

Washing machines are becoming more popular with consumers as a hands-free washing device. Among the various performances of the washing machine, the degree of washing of laundry and the clean and healthy laundry environment are two particularly important items.

For the drum washing machine, when the inner drum rotates at a higher speed, water in the inner drum penetrates through the clothes and the side wall of the inner drum due to the centrifugal force effect and enters between the inner drum and the outer drum, and only a small amount of water can return to the inner drum, and the washing effect of the returned water flow on the clothes is poor, so that the washing effect is affected. In addition, in the washing process, dirt residues exist on the inner cylinder, the door body and other parts, and the washing environment is influenced.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the roller washing machine which has the advantages of good cleaning effect, clean and healthy washing environment and the like.

The invention provides a door seal for a drum washing machine.

An embodiment according to a first aspect of the present invention proposes a drum washing machine including: an outer tub; the inner barrel is rotatably arranged in the outer barrel; the door body is used for opening and closing the outer barrel; the door seal is arranged on the outer barrel; the water guiding edge is arranged on the door seal or the outer barrel, at least one part of the water guiding edge extends into the inner barrel, and the water guiding edge guides water between the front wall of the outer barrel and the door seal into the inner barrel.

According to the drum washing machine provided by the embodiment of the invention, the water guide edge is arranged, so that water flow between the inner drum and the outer drum can be guided like the inner drum by the water guide edge, water waterfall type water flow is formed, the door seal can be flushed to avoid dirt residue, and clothes can be flushed to improve the washing effect of the clothes.

According to some embodiments of the invention, the water guiding edge is arc-shaped extending along the circumferential direction of the inner cylinder.

Further, with reference to clock graduations distributed on the outer surface of the dock seal along the circumferential direction of the dock seal, the water guide extends continuously in a clockwise direction from at least the 12 o 'clock position to the 2 o' clock position or at least from the 10 o 'clock position to the 12 o' clock position.

Further, the water guide extends continuously in a clockwise direction from at least the 11 o 'clock position to the 3 o' clock position or from at least the 9 o 'clock position to the 1 o' clock position.

According to some embodiments of the invention, the door seal has a lip surrounding the outside of the mouth of the inner cylinder, the lip being provided with an opening at a position corresponding to the water guiding edge, the lip being partially coincident with the water guiding edge in the circumferential direction of the door seal.

According to some embodiments of the invention, the at least a portion of the water guiding edge extends obliquely into the inner barrel and towards a central axis of the inner barrel.

According to some embodiments of the invention, the water guide extends beyond the mouth of the inner barrel in an axial direction of the inner barrel toward the interior of the inner barrel.

Further, the width L of the portion of the water guiding edge beyond the nozzle of the inner cylinder in the axial direction of the inner cylinder is not more than 3mm.

According to some embodiments of the invention, the water guiding edge comprises: the supporting edge is positioned outside the inner cylinder and exceeds the cylinder opening of the inner cylinder in the radial direction of the inner cylinder; and the flanging is connected with the supporting edge and extends into the inner cylinder.

Further, a water storage groove is arranged on the surface of the edge of the flanging, which faces the cylinder opening of the inner cylinder.

Further, a plurality of water storage ribs are arranged in the water storage groove, each water storage rib extends along the width direction of the flanging, and the water storage groove is divided into a plurality of water storage areas which are arrayed along the length direction of the water storage groove by the plurality of water storage ribs.

According to some specific examples of the invention, the flange has a head end and a tail end, the flange extending from the head end to the tail end in a direction of rotation of the inner barrel, the reservoir being located at the tail end.

Further, an included angle beta between the flanging and the supporting edge is not smaller than 105 degrees.

Further, a plurality of reinforcing ribs are arranged on at least one of the supporting edge and the flanging.

Further, a plurality of the reinforcing ribs are arranged on the surface of the edge of the flanging, which is opposite to the nozzle of the inner cylinder, each reinforcing rib extends along the width direction of the flanging, and a plurality of reinforcing ribs are arranged at intervals along the length direction of the flanging.

Further, each of the ribs further extends to a surface of the support edge facing away from the inner barrel.

According to some embodiments of the invention, the water guiding edge is provided on the dock seal and is integrated with the dock seal.

According to some embodiments of the invention, the water guiding edge is provided on the outer tub, and the water guiding edge is integrated with the outer tub or is a separate piece mounted together.

According to some embodiments of the invention, the front surface of the front wall of the inner tube is provided with a plurality of concave portions and a plurality of convex portions, the plurality of concave portions and the plurality of convex portions are arranged continuously along the circumferential direction of the front wall of the inner tube and the concave portions and the convex portions are alternately arranged.

An embodiment according to a second aspect of the present invention proposes a door seal for a drum washing machine, the door seal being provided with a water guiding edge, at least a portion of the water guiding edge extending into an inner drum of the drum washing machine, the water guiding edge guiding water between a front wall of an outer tub of the drum washing machine and the door seal into the inner drum.

According to the door seal for the drum washing machine, disclosed by the embodiment of the invention, the water flow for washing clothes in the inner drum can be formed, so that the washing effect is improved, and a clean and healthy washing environment is formed

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic view of a drum washing machine according to an embodiment of the present invention.

Fig. 2 is a side view of a drum washing machine according to an embodiment of the present invention.

Fig. 3 is a schematic view of the structure of the region a in fig. 2.

Fig. 4 is a rear sectional view of a drum washing machine according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of a door glass of a drum washing machine according to an embodiment of the present invention.

Fig. 6 is a side view of a door glass of a drum washing machine according to an embodiment of the present invention.

Fig. 7 is a rear view of a door glass of a drum washing machine according to an embodiment of the present invention.

Fig. 8 is a rear sectional view of a drum washing machine in accordance with another embodiment of the present invention.

Fig. 9 is a schematic structural view of a door seal of a drum washing machine according to an embodiment of the present invention.

Fig. 10 is a rear view of a door seal of a drum washing machine according to an embodiment of the present invention.

Fig. 11 is an enlarged view of region B in fig. 10.

Fig. 12 is an enlarged view of region C in fig. 10.

Fig. 13 is a side sectional view of a drum washing machine according to an embodiment of the present invention.

Fig. 14 is an enlarged view of the region D in fig. 13.

Fig. 15 is an enlarged view of the area E in fig. 13.

Fig. 16 is a sectional view of an outer tub and a water guiding rim of a drum washing machine according to an embodiment of the present invention.

Fig. 17 is a sectional view of an outer tub and a water guiding rim of a drum washing machine according to another embodiment of the present invention.

Fig. 18 is a sectional view of an outer tub and a water guiding rim of a drum washing machine according to still another embodiment of the present invention.

Fig. 19 is a schematic view of the structure of the front wall of the drum washing machine according to the embodiment of the present invention.

Fig. 20 is a side view of a drum washing machine according to an embodiment of the present invention.

Fig. 21 is an enlarged view of the area F in fig. 20.

Fig. 22 is a side view of a drum washing machine in accordance with another embodiment of the present invention.

Fig. 23 is an enlarged view of the region G in fig. 22.

Fig. 24 is a rear view of an outer tub of a drum washing machine according to an embodiment of the present invention.

Fig. 25 is a partial side view of an outer tub of a drum washing machine according to an embodiment of the present invention.

Fig. 26 is a schematic structural view of an inner tub of a drum washing machine according to an embodiment of the present invention.

Fig. 27 is a partial structural rear view of an outer tub of a drum washing machine according to an embodiment of the present invention.

Fig. 28 is a partial structural side view of an outer tub of a drum washing machine according to an embodiment of the present invention.

Reference numerals:

a drum washing machine 1,

An outer barrel 100,

Inner cylinder 200, lifting rib 210, water outlet 211, cylinder mouth 220, concave part 230, convex part 240,

Door glass 300, water guide ring 310, water guide inclined surface 311, first end 313, second end 314, recess 320, water inlet 321,

Door seal 400, water guiding edge 410, lip 420, opening 421, supporting edge 430, flange 440, water storage groove 441, water storage rib 442, head end 443, tail end 444, reinforcing rib 450,

Water guide rib 510, inner end 511, outer end 512, water lifting rib 520, and water dividing rib 530.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Hereinafter, a drum washing machine 1 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1 to 28, the drum washing machine 1 according to the embodiment of the present invention includes an outer tub 100, an inner tub 200, a door body, and a water guide structure.

For the convenience of understanding of those skilled in the art, the direction marks in the drawings are all based on the normal use direction of the drum washing machine 1, that is, the up-down direction is the up-down direction of the drum washing machine 1 when the drum washing machine 1 is actually used, and the front surface of the drum washing machine 1 faces the user, and the rear surface of the drum washing machine 1 faces away from the user. The following embodiments are described with respect to the structure, dimensional parameters, and the like of the door body when the door body is closed.

The inner diameter of the outer tub 100 is D. The inner cylinder 200 is rotatably provided in the outer tub 100. The door body for opening and closing the tub 100 may be provided at a cabinet of the drum washing machine 1. The water guide structure is for guiding water into the inner tub 200, and may be provided on at least one of the outer tub 100, the inner tub 200, and the door.

Wherein, during the operation of the drum type washing machine 1, the inner tub 200 rotates at a rotational speed of not higher than 11sqrt (D) for at least a period of time, it is understood that sqrt is a square root calculation.

In the related art, it is generally considered by those skilled in the art that the higher the rotational speed of the inner tub, the better the washing effect of the laundry is, but the inventors of the present invention found that this is not the case, if the rotational speed of the inner tub is too high, not only the vibration noise is large, but more importantly, the too high rotational speed causes the centrifugal force to be too large, so that the water between the inner tub and the outer tub stays there due to the too large centrifugal force, and cannot return to the inner tub again, so that the circulating water cannot be formed to repeatedly penetrate the laundry, not only the washing effect is not improved, but also the washing degree is affected.

According to the drum washing machine 1 of the embodiment of the present invention, by limiting the maximum rotation speed of the inner tub 200 in combination with the inner diameter D of the outer tub 100, the rotation speed of the inner tub 200 is not higher than 11sqrt (D) for at least a period of time, so that not only can vibration and noise be ensured within a reasonable range, but also excessive centrifugal force of the inner tub 200 can be avoided, and by combining with the water guide structure for guiding water into the inner tub 200, water between the outer tub 100 and the inner tub 200 can be returned into the inner tub 200 under the guide of the water guide structure, thus forming a circulating water flow, so that the water flow continuously penetrates through laundry to enhance the washing effect.

Therefore, the drum washing machine 1 according to the embodiment of the present invention has advantages of small vibration noise, high washing degree, and the like.

In some embodiments of the present invention, the rotational speed of the inner tub 200 during the at least one period of time is not less than 4.5sqrt (D), thereby further defining the minimum rotational speed of the inner tub 200, ensuring that the inner tub 200 generates sufficient centrifugal force to enable water within the inner tub 200 to penetrate the laundry, and further ensuring the washing effect on the laundry.

Preferably, the rotational speed of the inner barrel 200 during the at least one period of time is not higher than 9sqrt (D) and not lower than 6sqrt (D).

In some specific examples of the present invention, the drum washing machine 1 includes at least a washing mode and a dehydrating mode during operation, for example, a pre-washing mode may be added before the washing mode, and the rotational speed of the drum 200 in the washing mode is not higher than 11sqrt (D) and not lower than 4.5sqrt (D) to sufficiently improve the washing effect.

Preferably, the rotational speed of the inner tub 200 in the washing mode is not higher than 9sqrt (D) and not lower than 6sqrt (D).

For example, a drum washing machine having an inner diameter of 500mm and 10kg of an outer tub is used as a reference.

The rotating speed R of the inner cylinder is (100-250) RPM;

wherein, C is a constant coefficient, C=1 of the drum washing machine, the inner diameter of the outer barrel of the drum washing machine is set to be D0 (mm), and the inner diameters of the outer barrels of other drum washing machines are set to be D (mm);

Thus, c=sqrt (D/500);

i.e., 4.5sqrt (D). Ltoreq.R.ltoreq.11 sqrt (D), preferably 6sqrt (D). Ltoreq.R.ltoreq.9 sqrt (D).

In other words, the water guide structure can achieve a better cleaning effect in combination with the rotational speed control of the inner tube 200.

Further, in order to produce a better washing effect, the influence of the amount of water is also considered, and thus, the water level in the tub 100 is not lower than 15% d.

In some specific examples of the present invention, as shown in fig. 2 and 13, the outer surface of the circumferential wall of the inner cylinder 200 (i.e., the outer circumferential wall surface of the inner cylinder 200) is provided with the lifting rib 210, and the lifting rib 210 may extend in the axial direction of the inner cylinder 200 and have a wave shape, and the lifting rib 210 is provided with the water outlet hole 211 communicating with the inside of the inner cylinder 200. When the inner tub 200 rotates, the centrifugal force generated causes water in the inner tub 200 to pass through the laundry and the water outlet hole 211 and enter between the inner tub 200 and the outer tub 100, and the lifting rib 210 continuously agitates water flow between the inner tub 200 and the outer tub 100 and causes the water flow to flow upward and finally return to the inner tub 200 under rotation of the inner tub 200, and in this process, the water flow washes the inner tub 200, the outer tub 100, the door body, the laundry and the like.

In some embodiments of the present invention, as shown in fig. 1-8, the water guiding structure includes a water guiding ring 310.

The door body has a door glass 300, and it should be understood herein that the door glass 300 is a generic term for this component of the door body of the drum washing machine by those skilled in the art, and does not necessarily limit the door glass 300 to be made of glass. The water guide ring 310 is formed on the door glass 300, for example, the door glass 300 is integrally formed, and the water guide ring 310 is a part of the integrally formed door glass 300, the water guide ring 310 extends generally along the circumferential direction of the door glass 300, the water guide ring 310 forms a recess 320 for guiding water into the inner cylinder 200 on the inner surface (i.e., rear surface) of the door glass 300, the recess 320 is recessed forward, and the water guide ring 310 is opposite to the nozzle 220 of the inner cylinder 200 when the door body is closed. The upper part of the water guiding ring 310 is configured with a water guiding inclined plane 311 extending obliquely from top to bottom to the inside of the inner cylinder 200, i.e. the water guiding inclined plane 311 extends obliquely from top to bottom to the rear, the concave 320 is provided with a water inlet 321 penetrating the water guiding inclined plane 311, i.e. the water guiding inclined plane 311 of the water guiding ring 310 is formed with a notch communicated with the concave 320, i.e. the notch is the water inlet 321.

Specifically, in the working process of the drum washing machine 1, for example, during washing, the inner drum 200 rotates, the lifting ribs 210 of the inner drum 200 stir water flow between the inner drum 200 and the outer drum 100, the water flow passes through the water guide inclined plane 311 and enters the concave 320 through the water inlet 321, and then is led into the inner drum 200 through the concave 320, in the process, the inner drum 200 and the door glass 300 can be washed to avoid dirt residues, a clean and healthy washing environment is formed, clothes can be impacted continuously, dissolution of the detergent is accelerated, and the washing degree of the clothes is higher. Also, the recess 320 can increase the capacity of the drum washing machine 1, and increase the load capacity of washing laundry.

According to the door glass 300 and the door body and the drum washing machine 1 with the door glass, the water guide ring 310 is formed on the door glass 300, the water guide ring 310 can be utilized to form the concave 320 facing the inner drum 200, and the water inlet 321 communicated with the concave 320 is arranged on the water guide inclined surface 311 of the water guide ring 310, so that water flow between the inner drum 200 and the outer drum 100 can enter the concave 320, and then can be flushed towards clothes in the inner drum 200, so that circulating water flow can be formed to continuously impact the clothes, the washing effect of the clothes is improved, and a clean and healthy washing environment can be formed.

Wherein at least a portion of the recess 320 is configured in a spherical crown shape in order to enhance the water guiding effect of the recess 320 into the inner barrel 200.

Alternatively, as shown in fig. 8, in the circumferential direction of the water guide ring 310, the width P of the rest of the water guide ring 310, excluding the water guide slope 311 configured, in the axial direction of the door glass 300 is maintained to be uniform to secure the water guide effect of the recess 320. For example, the width P of the lower portion of the water guide ring 310 is uniform, and the width of the portion of the upper portion of the water guide ring 310 where the water guide slope 311 is constructed is gradually reduced from bottom to top.

In some specific examples of the present invention, as shown in fig. 6, the projection of the door glass 300 in a vertical plane parallel to the axial direction thereof, wherein the maximum width of the door glass 300 in the axial direction thereof is W, the maximum height of the door glass 300 is H, and the height H of the water guiding slope 311 at W/2 is less than 85% H. Here, it is understood that the maximum height H of the door glass 300 refers to the distance between the lowest point and the highest point of the door glass 300 in the up-down direction, and the height H of the water guiding slope 311 at W/2 refers to the distance between the point on the water slope 311 at W/2 and the lowest point of the door glass 300 in the up-down direction.

Further, the included angle alpha between the tangent line of the water guiding inclined surface 311 at the W/2 position and the vertical direction is smaller than 40 degrees.

Thus, by limiting the relevant parameters of the water guiding inclined surface 311, it is ensured that the water flow between the inner tub 200 and the outer tub 100 can smoothly pass over the water guiding inclined surface 311, so that the water enters the recess 320 from the water inlet 321, and is guided into the inner tub 200 to impact the laundry.

In some implementations of the invention, as shown in FIG. 7, the water guide ring 310 is an axisymmetric structure having an axis of symmetry S that is perpendicular to the axial direction of the water guide ring 310. In other words, in a plane perpendicular to the axial direction of the water guide ring 310, the structure of the water guide ring 310 is symmetrical about the symmetry axis S, i.e., the water guide inclined surfaces 311 are uniformly distributed at both sides of the water guide ring 310. Thus, the processing and manufacturing of the water guide ring 310 can be facilitated, and water flows over the water guide inclined surface 311 and enters the concave 320 from the water inlet 321.

Alternatively, as shown in fig. 7, the symmetry axis S extends in the vertical direction.

Of course, as shown in fig. 8, the symmetry axis S may be disposed obliquely with respect to the vertical direction, that is, the door glass 300 is disposed obliquely.

Specifically, as shown in fig. 8, the direction of inclination of the symmetry axis S with respect to the vertical direction is set opposite to the direction of rotation of the inner cylinder 200. For example, when the inner cylinder 200 is rotated in a clockwise direction in a rear-to-front view, the symmetry axis S is inclined in a counterclockwise direction with respect to the vertical direction.

Since the inner tub 200 is generally rotated only in one direction to save time and simplify the process, the door glass 300 is inclined in combination with the rotation direction of the inner tub 200, so that the symmetry axis S of the water guide ring 310 is inclined in the opposite direction to the rotation direction of the inner tub 200, which is advantageous for guiding more water into the recess 320, thereby guiding more water into the inner tub 200 to further improve the washing effect of laundry.

In some specific examples of the present invention, as shown in fig. 8, the water guiding slope 311 has a first end 313 and a second end 314 in the circumferential direction of the water guiding ring 310. Taking the clock scale distributed along the circumferential direction of the water guide ring 310 at the outer surface (front surface) of the door glass 300 as a reference, in other words, the circumferential direction of the water guide ring 310 is virtually distributed with the clock scale in the view from the front to the rear, the first end 313 of the water guide slope 311 is lower than the second end 314 of the water guide slope 311, and the first end 313 of the water guide slope 311 is located at the 3 o 'clock position, and the second end 314 of the water guide slope 311 passes over at least the 12 o' clock position in the counterclockwise direction from the first end 313. It should be understood that, since fig. 8 shows a view from the rear to the front, an understanding is required with respect to the view from the front to the rear.

When the drum washing machine 1 is washing, the inner drum 200 rotates, the lifting ribs 210 stir the water flow, the highest point of the water flow is usually located at the position of 3 o 'clock on the front surface, and then the first end 313 of the water guiding inclined surface 311 is arranged at the position of 3 o' clock on the front surface, so that the water flow passes through the first end 313 of the water guiding inclined surface 311 and enters the concave 320 from the water inlet 321. Also, to ensure both the amount of water entering the recess 320 and the amount of water that the recess 320 directs to the inner barrel 200, the second end 314 of the water guiding ramp 311 extends continuously at least past the 12 o' clock position.

In some embodiments of the present invention, as shown in fig. 2-4 and 9-12, the water guiding structure includes a water guiding rim 410.

The outer tub 100 is provided with a door seal 400, and when the door is closed, the door seal 400 seals a gap between the door and the outer tub 100. The water guiding edge 410 is provided on the door seal 400 or the outer tub 100, and at least a portion of the water guiding edge 410 extends into the inner tub 200, and it should be understood that at least a portion of the water guiding edge 410 extends into the inner tub 200, and does not necessarily extend into the inner tub 200. The water guiding rim 410 guides water between the front wall of the tub 100 and the door seal 400 into the inner tub 200.

Specifically, when the inner tub 200 rotates, the water flow between the inner tub 200 and the outer tub 100 is agitated by the lifting ribs 210, and the water flow moves circularly between the front wall of the inner tub 200 and the door seal 400, and when the water flow reaches the top, the water flow is guided into the inner tub 200 along the water guiding edge 410 due to gravity greater than centrifugal force, so that waterfall water flow is formed, and not only the door seal 400 can be flushed to avoid dirt residues, but also clothes can be flushed to improve the washing effect of the clothes.

In some specific examples of the invention, as shown in fig. 9-12, the water guiding edge 410 is arcuate extending along the circumference of the nozzle 220 of the inner barrel 200 and is located at an upper position of the nozzle 220.

As shown in fig. 8 and 10, with reference to clock marks distributed along the circumferential direction of the dock seal 400 at the outer surface of the dock seal 400, in other words, the circumferential direction of the dock seal 400 is virtually distributed with clock marks in a view from the front to the rear, the water guide edge 410 continuously extends in the clockwise direction from at least the 12 o 'clock position to the 2 o' clock position, and the inner cylinder 200 rotates in the counterclockwise direction in the view.

Preferably, the water guiding edge 410 extends continuously in a clockwise direction from at least the 11 o 'clock position to the 3 o' clock position.

It should be understood that, since fig. 8 and 10 show a view from the rear to the front, an understanding is required with respect to a view from the front to the rear.

When the drum washing machine 1 is used for washing, the inner drum 200 rotates, the lifting ribs 210 stir water flow, the highest point of the water flow is usually located at the position of 3 o ' clock on the front surface, and the water guiding edge 410 is arranged to extend continuously at least from the position of 12 o ' clock on the front surface to the position of 2 o ' clock on the front surface in a clockwise direction, so that the water guiding edge 410 can guide the water flow at the highest position into the inner drum 200 conveniently, and the water guiding amount of the water guiding edge 410 is ensured.

Alternatively, with reference to clock marks distributed along the circumferential direction of the dock seal 400 at the outer surface of the dock seal 400, in other words, the circumferential direction of the dock seal 400 is virtually distributed with clock marks in a view from the front to the rear, the water guide edge 410 continuously extends in the clockwise direction from at least the 10 o 'clock position to the 12 o' clock position, and the inner cylinder 200 rotates in the clockwise direction in the view.

Preferably, the water guiding edge 410 extends continuously in a clockwise direction from at least the 9 o 'clock position to the 1 o' clock position.

When the drum washing machine 1 is used for washing, the inner drum 200 rotates, the lifting ribs 210 stir water flow, the highest point of the water flow is usually located at the position of 9 o ' clock on the front surface, and the water guiding edge 410 is arranged to extend continuously at least from the position of 10 o ' clock on the front surface to the position of 12 o ' clock on the front surface in a clockwise direction, so that the water guiding edge 410 guides the water flow at the highest position into the inner drum 200, and the water guiding amount of the water guiding edge 410 is ensured.

In some specific examples of the present invention, as shown in fig. 10 and 12, the door seal 400 has a lip 420, the lip 420 surrounds the outside of the nozzle 220 of the inner cylinder 200, and an opening 421 is provided at a position of the lip 420 corresponding to the water guiding edge 410, that is, the lip 420 extends along the circumferential direction of the door seal 400, and is in an open-loop shape instead of a closed-loop shape, the broken position of the lip 420 is the opening 421, and the opening 421 can facilitate the water flow between the front wall of the inner cylinder 200 and the door seal 400 to the water guiding edge 410, and be guided into the inner cylinder 200 by the water guiding edge 410.

Wherein the lip 420 partially coincides with the water guiding edge 410 in the circumferential direction of the dock seal 400. In other words, in the circumferential direction of the dock seal 400, one end of the lip 420 coincides with one end of the water guiding edge 410, and the other end of the lip 420 coincides with the other end of the water guiding edge 410. Thus, the water flow can be collected above the water guiding edge 410 to form high-pressure waterfall water flow, and the water flow is prevented from falling into the inner barrel 200 directly.

In some specific examples of the invention, as shown in fig. 2 and 3, the at least a portion of the water guiding edge 410 extends obliquely inward of the inner tub 200 and toward the central axis of the inner tub 200, i.e., the water guiding edge 410 extends obliquely from front to back and downward, so that the water flow directly impacts the laundry in the inner tub 200 under the guidance of the water guiding edge 410.

Further, as shown in fig. 3 and 4, in order to secure the flushing effect of the water flow guided by the water guiding edge 410, the water guiding edge 410 extends beyond the nozzle 220 of the inner tube 200 toward the inside of the inner tube 200 in the axial direction of the inner tube 200.

Further, as shown in fig. 4, the width L of the portion of the water guiding edge 410 beyond the nozzle 220 of the inner drum 200 in the axial direction of the inner drum 200 is not greater than 3mm, so that friction between the clothes and the water guiding edge 410 is avoided, or the door seal 400 is indirectly pressed to prevent water flow from being formed, so that the clothes are prevented from being caught in the gap to pull the door seal 400, and the clothes and the door seal 400 are prevented from being damaged easily.

In some embodiments of the present invention, as shown in FIGS. 13-15, the minimum distance between the water guiding edge 410 and the front wall of the inner barrel 200 in the axial direction of the inner barrel 200 is M, and the minimum distance between the door seal 400 (specifically, lip 420) and the front wall of the inner barrel 200 is M, where M > M.

The minimum distance between the water guiding edge 410 and the front wall of the inner barrel 200 is M, so that water flows can be collected conveniently when the water flows do circular motion under the action of centrifugal force, and the water flow is smoothly in the centripetal direction, so that the water flows into the inner barrel 200 under the guidance of the water guiding edge 410. The minimum distance between the dock seal 400 and the front wall of the inner barrel 200 is m, so that small objects can be prevented from falling into the inner barrel 200, and when water flow is stirred, the dock seal 400 is ensured to have smaller obstruction to the water flow, so that the water flow can enter the inner barrel 200 from a gap between the dock seal 400 and the inner barrel 200. That is, by limiting the above-mentioned dimensions, not only can the water flow enter the inner tub 200 to wash the laundry, but also the laundry can be prevented from being caught between the inner tub 200 and the outer tub 100.

Further, as shown in fig. 14, in combination with tolerance dispersion of each related component and dispersion of the assembly of the production line, fluctuation of the inner cylinder 200 in up, down, left and right directions during movement, and eccentricity of clothes under extreme conditions, the minimum distance N between the water guiding edge 410 and the edge of the nozzle 220 of the inner cylinder 200 is greater than 5mm, so that friction between the inner cylinder 200 and the water guiding edge 410 can be avoided, and tearing deformation of the door seal 400 caused by indirectly pulling the door seal 400 can be prevented.

In some embodiments of the present invention, as shown in fig. 9-11, the water guiding edge 410 includes a support edge 430 and a flange 440.

The support edge 430 is located outside the inner barrel 200 and beyond the mouth 220 of the inner barrel 200 in the radial direction of the inner barrel 200, and the support edge 430 may be disposed parallel to the front wall of the inner barrel 200. The flange 440 is connected to the support rim 430, and the flange 440 extends from the support rim 430 into the inner barrel 200, e.g., obliquely rearward and downward. The support rim 430 and the flange 440 cooperate to direct water between the front wall of the inner cartridge 200 and the door seal 400 into a high pressure waterfall stream that impinges the inner cartridge 200.

The minimum distance between the support edge 430 and the front wall of the inner cylinder 200 is M, and the minimum distance between the flange 440 and the edge of the nozzle 220 of the inner cylinder 200 is N.

Alternatively, as shown in fig. 13 and 14, the included angle β between the flange 440 and the support edge 430 is not less than 105 °, thereby ensuring a minimum distance N between the flange 440 and the rim of the nozzle 220 of the inner barrel 200.

In some specific examples of the present invention, as shown in fig. 10 and 11, the surface of the rim 440 facing the rim of the nozzle 220 of the inner cylinder 200 is provided with a water storage groove 441, that is, the water storage groove 441 is provided at the outer circumferential surface of the rim 440. Specifically, flange 440 has a head end 443 and a tail end 444, flange 440 extends from head end 443 in the direction of rotation of inner barrel 200 to tail end 444, and water storage tank 441 is located at tail end 444.

Further, a plurality of water storage ribs 442 are disposed in the water storage tank 441, each water storage rib 442 extends along the width direction of the flange 440, and the water storage tank 441 is divided into a plurality of water storage areas arranged along the length direction of the water storage tank 441 by the plurality of water storage ribs 442.

Specifically, the water flow moves circularly in the gap between the door seal 400 and the front wall of the inner barrel 200, the water flow firstly enters the head end 443 of the flange 440, part of the water flow is guided into the inner barrel 200 by the flange 440, and part of the water flow continues to flow towards the tail end 444 of the flange 440 under the inertia effect, the water storage groove 441 is arranged at the tail end 444 of the flange 440, the water storage rib 442 is blocked when the water flow enters the water storage groove 441, the water storage area plays a role in water storage, when the water flow circulates, the water storage in the water storage area is extruded due to the gravity of the water flow, and the water fall water flow is formed circularly, so that the washing effect on clothes is further improved.

In some embodiments of the present invention, as shown in fig. 9 to 11, in order to enhance the structural strength of the water guiding edge 410, a plurality of reinforcing ribs 450 are provided on at least one of the supporting edge 430 and the flange 440 to prevent the water guiding edge 410 from being deformed to be laid down when the water falls into the water guiding edge 410, thereby enhancing the stability of the water guiding.

Specifically, the plurality of reinforcing ribs 450 are provided on a surface of the flange 440 facing away from the rim of the nozzle 220 of the inner tube 200 (i.e., an inner circumferential surface of the flange 440), each reinforcing rib 450 extends in the width direction of the flange 440, and the plurality of reinforcing ribs 450 are provided at intervals in the length direction of the flange 440. Thereby, the structural strength of the flange 440 can be uniformly reinforced, and the overall structural strength of the flange 440 can be improved.

Further, each of the reinforcing ribs 450 further extends to a surface of the support rim 430 facing away from the inner cylinder 200 (i.e., a front surface of the support rim 430) to further enhance the structural strength of the support rim 430.

In some embodiments of the present invention, the water guiding edge 410 is provided on the door seal 400 and is formed as one piece with the door seal 400.

Of course, the present invention is not limited thereto, and the water guiding rim 410 may be provided to the outer tub 100. For example, as shown in fig. 16, the water guiding rim 410 is formed as one piece with the outer tub 100; as another example, as shown in fig. 17 and 18, the water guiding rim 410 and the tub 100 are separate pieces mounted together, and the two can be coupled by a snap and/or bolt.

In some specific examples of the present invention, as shown in fig. 19, the front surface of the front wall of the inner tube 200 is provided with a plurality of concave portions 230 and a plurality of convex portions 240, the plurality of concave portions 230 and the plurality of convex portions 240 are arranged continuously in the circumferential direction of the front wall of the inner tube 200 and the concave portions 230 and the convex portions 240 are alternately arranged, that is, in the circumferential direction of the front wall of the inner tube 200, in the order of concave portions 230-convex portions 240-concave portions 230 … … over the entire circumference. Thus, the protrusion 240 can play a role of agitating the water flow when the water flow performs a circular motion between the front wall of the inner tub 200 and the door seal 400, and better lifts the water flow at the bottom to a high place.

Further, the plurality of concave portions 230 and the plurality of convex portions 240 may be arranged in a plurality of circles distributed in the radial direction of the front wall of the inner tube 200, as in the example shown in fig. 19, the plurality of concave portions 230 and the plurality of convex portions 240 are arranged in two circles, that is, at the inner peripheral edge of the front wall of the inner tube 200, one circle is also provided, which is also arranged in the order of concave portions 230-convex portions 240-concave portions 230 … … over the entire circumference.

In some embodiments of the present invention, as shown in fig. 20 to 28, the water guiding structure includes a water guiding rib 510 and one of a water lifting rib 520 and a water dividing rib 530.

Wherein the water guide rib 510 is provided at the rear surface of the front wall of the tub 100. The water lifting ribs 520 are provided on the outer surface of the peripheral wall of the inner tube 200 (i.e., the outer peripheral wall surface of the inner tube 200) and are located at the front portion of the inner tube 200. The water diversion ribs 530 are provided on an inner surface of the peripheral wall of the outer tub 100 (i.e., an inner peripheral wall surface of the outer tub 100) and are located at the front of the outer tub 100.

In other words, as shown in fig. 20 and 21, the water guide rib 510 and the water lifting rib 520 may be provided at the same time. As shown in fig. 22 and 23, water diversion ribs 510 and 530 may be provided at the same time.

According to the drum washing machine 1 provided by the embodiment of the invention, the water guide ribs 510 and one of the water lifting ribs 520 and the water dividing ribs 530 are arranged, so that water flow for washing foam and washing clothes can be formed, the washing effect of the clothes is improved, and a clean and healthy washing environment is formed.

Specifically, by providing the water guide rib 510 on the rear surface of the front wall of the outer tub 100, the water flow between the inner tub 200 and the outer tub 100 is gradually lifted from the lowest point to the highest point when the inner tub 200 rotates, in this process, the water flow is uniformly distributed and dispersed at the water guide rib 510, and forms a sheet-shaped water flow under the action of the water guide rib 510, and then forms a waterfall-shaped dispersed water flow to spray on the door glass 300, so as to play a role in cleaning the foam on the door glass 300, and the water flow sprayed on the door glass 300 enters the recess 320 to be led into the inner tub 200 to wash the laundry, thereby improving the washing effect of the laundry.

Through setting up water lifting rib 520 and combining water guide rib 510 in the front portion of the periphery wall of inner tube 200, during the washing, inner tube 200 is rotatory, water lifting rib 520 lifts the rivers between inner tube 200 and outer bucket 100 from the lowest position, rivers promote to the highest position in this process, rivers equipartition dispersion in water guide rib 510 department to under the effect of water guide rib 510, form the slice rivers, and then form waterfall form dispersion rivers and spray on door glass 300, play the effect of washing the foam on the door glass 300, and the rivers that spray on the door glass 300 get into sunken 320 and be directed into in the inner tube 200 and wash the clothing, improved the cleaning effect of clothing.

Through setting up water diversion rib 530 and combining water guide rib 510 in the front portion of the inner peripheral wall face of outer bucket 100, during the washing, inner tube 200 high-speed rotation, the rivers between inner tube 200 and outer bucket 100 are rotatory along with inner tube 200, by the minimum being promoted to the highest point, in this process, water diversion rib 530 can avoid rivers to paste the inner peripheral wall face of outer bucket 100 rotatory, and the rivers are evenly distributed between water diversion rib 530, then rivers flow the water guide rib 510 of the front wall of outer bucket 100, under the effect of water guide rib 510, form the laminar rivers, and then form the scattered rivers of waterfall form and spray on door glass 300, play the effect of washing foam on the door glass 300, and the rivers that spray on door glass 300 get into sunken 320 and be directed into in inner tube 200 wash the clothing, the washing effect of clothing has been improved.

In some specific examples of the present invention, as shown in fig. 24 and 25, the water guide ribs 510 are provided in plurality and at equal intervals in the circumferential direction of the front wall of the outer tub 100.

Further, the plurality of water guide ribs 510 are at least fully distributed over the upper portion of the front wall of the outer tub 100, and the plurality of water guide ribs 510 occupy more than half of the entire circumference of the front wall of the outer tub 100, so that water flow uniformly distributed among the plurality of water guide ribs 510 is uniformly sprayed to the door glass 300 in a waterfall shape.

Alternatively, as shown in fig. 24, the water guide rib 510 has an inner end 511 and an outer end 512 along its length, the outer end 512 being offset from a line connecting the inner end 511 and the center of the front wall of the outer tub 100 in the circumferential direction of the front wall of the outer tub 100. That is, the water guide rib 510 does not extend in the radial direction of the outer tub 100, but is inclined at an angle. For example, the plurality of water guide ribs 510 are spirally and radially distributed from the center of the front wall of the outer tub 100 to the outer circumference of the front wall of the outer tub 100.

Therefore, the water flow flowing to the front wall of the outer tub 100 is uniformly distributed and separated by the plurality of water guide ribs 510, the water flow is sprayed downwards from the outer circle of the front wall of the outer tub 100, the formed sprayed water flow is uniformly distributed on the door glass 300, the foam on the door glass 300 is washed, the effect of washing the foam of the door glass 300 is achieved, and the water flow further flows into the concave 320 of the door glass 300, so that the clothes of the inner tub 200 are washed.

Wherein, the water guide rib 510 is spaced apart from the front surface of the front wall of the inner tub 200 by a certain distance, so that the inner tub 200 rotating during washing does not interfere with the water guide rib 510 of the front wall of the stationary outer tub 100.

In some specific examples of the present invention, as shown in fig. 26, the water lifting ribs 520 are provided in plurality and at equal intervals along the circumferential direction of the circumferential wall of the inner tube 200.

Further, the plurality of water lifting ribs 520 are distributed over the entire circumference of the circumferential wall of the inner cylinder 200 in the circumferential direction of the circumferential wall of the inner cylinder 200, whereby the inner cylinder 200 can continuously lift water flow during rotation.

In some examples of the present invention, as shown in fig. 26, the water lifting ribs 520 are inclined with respect to the axial direction of the inner tub 200, and a component force parallel to the rotation axial direction of the inner tub 200 may be generated during the lifting of the water flow between the inner tub 200 and the outer tub 100 by the water lifting ribs 520, thereby improving the lifting effect of the water flow.

Specifically, the included angle γ between the water lifting rib 520 and the axial direction of the inner cylinder 200 is 20 ° -30 °, where γ is the included angle between the axial direction of the right hand rule and the water lifting rib 520 in the rotation direction of the inner cylinder 200.

Further, the water lifting ribs 520 are located within the first 1/3 of the inner cylinder 200 in the axial direction thereof. The water lifting ribs 520 are distributed at the front end of the inner tub 200 and extend to the end so that the washing water can be guided to the tub mouth 220 at the front of the inner tub 200. Preferably, the water flow device is arranged in the range of the first 1/3 of the length of the inner barrel 200, so that the risk of barrel collision is reduced, the water flow effect is improved, the forward water quantity is ensured, and the water circulation effect is improved.

Wherein, a certain distance is reserved between the water lifting ribs 520 and the inner surface of the peripheral wall of the outer barrel 100, so that the water lifting ribs 520 of the inner barrel 200 rotating during washing do not interfere with the inner peripheral wall surface of the stationary outer barrel 100.

In some specific examples of the present invention, as shown in fig. 27 and 28, the water diversion ribs 530 are provided in plurality and at equal intervals along the circumferential direction of the circumferential wall of the outer tub 100, each water diversion rib 530 extending in the axial direction of the outer tub 100.

Further, the plurality of water diversion ribs 530 are at least distributed over the upper portion of the peripheral wall of the outer tub 100, and the plurality of water diversion ribs 530 occupy more than half of the entire circumference of the peripheral wall of the outer tub 100, thereby preventing the rising water flow from rotating against the inner peripheral wall surface of the outer tub 100.

The water diversion ribs 530 are spaced from the outer surface of the peripheral wall of the inner cylinder 200 by a certain distance, so as to ensure that the inner cylinder 200 does not interfere with the rotating inner cylinder.

In some embodiments of the present invention, as shown in fig. 27 and 28, a plurality of water diversion ribs 510 are connected to a plurality of water diversion ribs 530 in a one-to-one correspondence in order to ensure continuous guiding of water flow.

It should be understood that in the above embodiment, the water guiding structure including the water guiding ring 310, the water guiding edge 410, the water guiding rib 510 and one of the water lifting ribs 520 and the water dividing ribs 530 is described, and any selection and combination of the above structures can be made by those skilled in the art, which are all within the scope of the present invention.

According to the drum washing machine 1 of the embodiment of the present invention, the door glass 300 forms the recess 320 located in the middle through the water guide ring 310, the water guide inclined surface 311 is provided at the upper portion of the water guide ring 310, and in the closed space formed between the outer tub 100 and the inner tub 200, the inner tub 200 rotates while washing, and the lifting rib 210 agitates the water flow, and the high point of the water flow rotation is generally in the front 3-point direction.

In the middle-low speed rotation process of the inner barrel 200, the stirring of the lifting ribs 210 forms a large amount of small-force water flow, and the water enters the concave 320 from the water inlet 321 through the water guide inclined surface 311. In the process of rotating the inner cylinder 200 at a high speed, water forms high-pressure water flow through the gap between the door seal 400 and the front wall of the inner cylinder 200 due to the centrifugal force, and the water flow continuously falls into the concave 320 through the water guide inclined plane 311 at the top of the water guide ring 310 due to the large gap M at the top, so that the inner cylinder 200, the door glass 300 and the door seal 400 are better washed, dirt residues are avoided, meanwhile, the high-pressure water flow also continuously impacts clothes, the dissolution of a detergent is accelerated, the clothes are cleaner to wash, the concave 320 of the door glass 300 also increases the volume of a washing cavity, and the load capacity of washing clothes is improved.

Through the setting of water guiding edge 410, the front portion of the front wall of inner tube 200 is equipped with a plurality of concave parts 230 and a plurality of convex parts 240, when drum washing machine 1 is operated, produce high-pressure rivers, constantly strike clothing, accelerate the dissolution of detergent, simultaneously high-pressure rivers wash inner tube 200 and door seal 400 better, make the clothing wash cleaner, improve the washing ratio of clothing washing, also do benefit to the washing machine cavity that ensures a clean and healthy, and have water guiding edge 410's door seal 400 can block clothing, make the clothing can restrict in inner tube 200 better, play the effect of fender clothing piece.

Experiments prove that the drum washing machine 1 according to the embodiment of the invention can realize better washing ratio, avoid the reduction of bearing life and the increase of power consumption caused by too high rotating speed, and the specific test results are as follows:

/>

as can be seen from the above test results, the drum washing machine 1 according to the embodiment of the present invention is superior to the conventional drum washing machine in terms of the washing ratio, the bearing life and the power consumption.

Other constructions and operations of the drum washing machine 1 according to the embodiment of the present invention are known to those skilled in the art, and will not be described in detail herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (19)

1. A drum washing machine, comprising:

an outer tub;

the inner barrel is rotatably arranged in the outer barrel;

the door body is used for opening and closing the outer barrel;

the door seal is arranged on the outer barrel;

a water guiding edge provided at the door seal or the outer tub, at least a portion of the water guiding edge extending into the inner tub, the water guiding edge guiding water between the front wall of the outer tub and the door seal into the inner tub;

the water guide extends continuously in a clockwise direction from at least the 12 o 'clock position to the 2 o' clock position or from at least the 10 o 'clock position to the 12 o' clock position, with reference to clock scales distributed on the outer surface of the dock seal in the circumferential direction of the dock seal;

the rotational speed of the inner cylinder in the washing mode is not higher than 11sqrt (D).

2. The drum washing machine as claimed in claim 1, wherein the water guide is in an arc shape extending along a circumferential direction of the inner tub.

3. The drum washing machine as claimed in claim 1, wherein the water guide continuously extends in a clockwise direction from at least 11 o 'clock to 3 o' clock or from at least 9 o 'clock to 1 o' clock.

4. The drum washing machine as claimed in claim 1, wherein the door seal has a lip surrounding an outside of the drum opening of the inner drum, the lip being provided with an opening at a position corresponding to the water guiding edge, the lip being partially overlapped with the water guiding edge in a circumferential direction of the door seal.

5. The drum washing machine as claimed in claim 1, wherein the at least a portion of the water guiding edge extends obliquely inward of the inner tub and toward a central axis of the inner tub.

6. The drum washing machine as claimed in claim 1, wherein the water guide extends beyond the mouth of the inner tub toward the inside of the inner tub in the axial direction of the inner tub.

7. The drum washing machine as claimed in claim 6, wherein a width L of the portion of the water guiding edge beyond the nozzle of the inner tub in the axial direction of the inner tub is not more than 3mm.

8. The drum washing machine as claimed in claim 1, wherein the water guiding rim comprises:

The supporting edge is positioned outside the inner cylinder and exceeds the cylinder opening of the inner cylinder in the radial direction of the inner cylinder;

and the flanging is connected with the supporting edge and extends into the inner cylinder.

9. The drum washing machine as claimed in claim 8, wherein a water storage groove is provided on a surface of the rim facing the opening of the inner tub.

10. The drum washing machine as claimed in claim 9, wherein a plurality of water storage ribs are provided in the water storage tank, each of the water storage ribs extends in a width direction of the flange and divides the water storage tank into a plurality of water storage areas arranged in a length direction of the water storage tank.

11. The drum washing machine as claimed in claim 9, wherein the rim has a head end and a tail end, the rim extending from the head end to the tail end in a rotation direction of the inner tub, the water storage tank being located at the tail end.

12. The drum washing machine as claimed in claim 8, wherein an angle β between the rim and the support edge is not less than 105 °.

13. The drum washing machine as claimed in claim 8, wherein at least one of the support rim and the burring is provided with a plurality of reinforcing ribs.

14. The drum washing machine as claimed in claim 13, wherein a plurality of the reinforcing ribs are provided on a surface of the rim of the flange facing away from the opening of the inner tub, each of the reinforcing ribs extending in a width direction of the flange and the plurality of reinforcing ribs being provided at intervals in a length direction of the flange.

15. The drum washing machine as claimed in claim 14, wherein each of the reinforcing ribs further extends to a surface of the support rim facing away from the inner tub.

16. The drum type washing machine as claimed in claim 1, wherein the water guide is provided along the door seal and is integrally formed with the door seal.

17. The drum type washing machine as claimed in claim 1, wherein the water guiding edge is provided to the tub, and the water guiding edge is formed as an integral piece with the tub or as a separate piece mounted together.

18. The drum washing machine as claimed in any one of claims 1 to 17, wherein a front surface of the front wall of the inner tub is provided with a plurality of concave portions and a plurality of convex portions, the plurality of concave portions and the plurality of convex portions are continuously arranged in a circumferential direction of the front wall of the inner tub and the concave portions and the convex portions are alternately arranged.

19. A door seal for a drum washing machine, the door seal being adapted for use in a drum washing machine as claimed in any one of claims 1 to 18, the door seal being provided with a water guiding edge, at least a portion of the water guiding edge extending into an inner drum of the drum washing machine, the water guiding edge guiding water between a front wall of an outer drum of the drum washing machine and the door seal into the inner drum.