JP7304323B2 - Rotating blades for washing machines and washing machines - Google Patents

Description

The present invention relates to a washing machine and a rotary vane disc used in the washing machine.

A washing machine in which the washing tub is placed vertically has a rotary blade disc provided at the bottom of the washing tub, and the rotary blade disc is rotated forward and backward to perform washing. In Patent Document 1, regarding the shape of the rotary blade disc, the valley-shaped inclined surface and the mountain-shaped inclined surface are discontinuously connected so that an upward component of force is applied to the laundry by rotation. It is disclosed that the angle of inclination decreases from the slanted surface to the slanted surface of the mountain.

JP 2015-204932 A

In Patent Literature 1, the troughs and slopes formed on the rotating disk blade promote the change of the top and bottom of the laundry to reduce uneven drying. However, this construction did not take into account the wrinkles formed during drying.

The present invention is intended to solve the conventional problems described above, and provides a washing machine and a rotary vane disk for the washing machine that suppresses uneven drying and further suppresses wrinkles.

The present invention comprises a washing tub, a rotary blade disc provided at the bottom of the washing tub, an outer tub that encloses the washing tub and stores washing water, and a drive that rotates the washing tub and the rotary blade disc. and a discharge port that discharges dry air from the upper part of the washing tub toward the rotary blade disc, and the rotary blade disc has a plurality of raised portions on the upper surface of the rotary blade disc, and a plurality of and an intermediate portion provided between the raised portion and the valley portion, the valley portion having a ridge extending radially from the outer peripheral end to the inner peripheral end. There are at least two ridges, and the two ridges have a drawn shape that approaches from the outer peripheral end to the inner peripheral end, and the bottom between the two ridges is from the outer peripheral end to the inner peripheral end and the two ridges have slanted portions that descend toward the bottom on the sides facing each other, and the slanted portion of one of the ridges at the inner peripheral end and the It is characterized in that it is configured such that it is in contact with and integrated with the inclined portion of the other projecting portion .

According to the present invention, it is possible to provide a washing machine that suppresses uneven drying and further suppresses wrinkles.

It is a right side longitudinal sectional view showing a washing machine in which the rotary blade disc of this embodiment is mounted. It is a perspective view of the rotary vane board mounted in the washing machine of this embodiment. It is a top view of the rotary vane board mounted in the washing machine of this embodiment. 4 is a cross-sectional view taken along line AA of FIG. 3; FIG. 4 is a cross-sectional view taken along the line BB of FIG. 3; FIG. It is a perspective view which shows the shape of the lower surface side of the rotor disk of this embodiment. 4 is a cross-sectional view taken along line CC of FIG. 3; FIG.

EMBODIMENT OF THE INVENTION Hereinafter, the form (henceforth "embodiment") for implementing this invention is demonstrated in detail, referring drawings suitably. In the following description, a washing machine S capable of washing, rinsing, dehydrating, and drying (a so-called vertical washing/drying machine) will be described as an example.

FIG. 1 is a right vertical cross-sectional view showing a washing machine equipped with a rotor disc according to the present embodiment.
As shown in FIG. 1, the washing machine S includes an outer frame 1 of a housing, an outer tub 2 for storing washing water, a washing and dehydrating tub 3 (washing tub), a rotor disk 4 (pulsator), and a drive motor ( drive unit) 10.

The outer frame 1 is formed by pressing a sheet metal (iron plate) into a rectangular tubular shape. A base 32 made of synthetic resin is provided on the lower portion of the outer frame 1 . A synthetic resin top cover (upper plate) 6 is provided on the upper portion of the outer frame 1 . Although not shown, the inside of the outer frame 1 is reinforced with a reinforcing member. Further, the base 32 is reinforced by providing grid-like ribs or the like inside.

The outer tank 2 is made of synthetic resin, has a substantially cylindrical shape with a bottom, and is supported in the center of the outer frame 1 via a vibration isolator (not shown). The anti-vibration device consists of a spring or elastic rubber, and supports the outer tank 2 by suspending it from the upper part of the outer frame 1 .

The washing and dewatering tub (washing tub) 3 has a cylindrical shape with a bottom that accommodates laundry (clothes) to be washed, dehydrated, and dried. The washing and dewatering tub 3 has a rotating shaft oriented substantially vertically. The washing and dehydrating tub 3 is provided in the center of the outer tub 2 and is rotatably supported within the outer tub 2 . The washing/drying tub 3 has a large number of small through-holes 3a (only some of which are shown in FIG. 1) for water flow and ventilation on its outer peripheral wall. Also, the washing and dewatering tub 3 has a plurality of through holes 3b for water flow and ventilation in its bottom wall. The upper edge of the washing/dehydrating tub 3 is provided with a fluid balancer 3c. At the bottom of the washing and dehydrating tub 3, there is rotatably provided a rotary vane disk 4 for agitating washing water for washing and rinsing.

The rotating blade disk 4 is operated to repeat forward/reverse rotation during the washing operation and the drying operation. Further, the rotary blade disc 4 rotates at high speed together with the laundry in the washing and dehydrating tub 3 during the dewatering operation, and dehydrates the water contained in the laundry by centrifugal force. The details of the rotor disk 4 will be described later.

A drive motor 10 is provided in the outer frame 1 and selectively rotates the rotor disk 4 and the washing and dewatering tub 3 . A DC brushless motor, for example, is used as the drive motor 10 . A DC brushless motor is controlled by vector control. Further, the driving motor 10 may directly drive the rotary vane disk 4 and the washing/dehydrating tub 3, or may be driven using a reduction mechanism such as a belt.

An openable and closable outer lid 5 is provided on the upper portion of the outer frame 1 . The rear side of the outer lid 5 is axially supported by a top cover 6 provided on the upper portion of the outer frame 1 . An inner lid 34 is provided above the outer tub 2 below the outer lid 5 so as to be openable and closable around the rear shaft. The laundry is put in and taken out of the washing and dehydrating tub 3 by opening the outer lid 5 and the inner lid 34 .

A water supply unit 7 is provided inside the outer frame 1 behind the outer lid 5 of the top cover 6 . The water supply unit 7 has a water supply box (not shown) having a plurality of water channels inside. A water supply unit 7 is supplied from a water supply hose connection port 8 protruding upward from the top cover 6 . Tap water or bath water is supplied from the water supply hose connection port 8 and poured into the outer tub 2 . A detergent and finishing agent charging device 35 is provided on the front side of the top cover 6 . Detergents and finishing agents are poured between the outer tub 2 and the washing and dehydrating tub 3 by an input hose 36. - 特許庁

The washing machine S also includes a drying mechanism 9 for drying laundry. The drying mechanism 9 circulates and dehumidifies the drying air for drying the laundry in the washing and dehydrating tub 3 . The drying mechanism 9 is mostly occupied by a drying air circuit. The drying air circulation path includes a bottom circulation path 20 communicating with the bottom of the outer tub 2 and a dehumidification vertical path 21 extending upward from the bottom circulation path 20 .

In addition, the drying mechanism 9 has an air blower 22 and a heater (not shown) that generate dry air in the drying process of the washing machine S. As shown in FIG. The lower suction side of the blower 22 is connected to the upper end of the dehumidifying vertical passage 21 . A drying filter 45 is arranged between the blower 22 and the dehumidifying vertical passage 21 so that foreign matter does not flow into the blower 22 . The front discharge side of the blower 22 is connected and communicates with the return connection circuit 25 . The return connection circulation path 25 communicates with the upper portion of the outer tub 2 via a part of the upper bellows hose 23 . The return connection circulation path 25 is formed with a discharge port 23 a for discharging dry air into the washing and dehydrating tub 3 . From the outlet 23a, as indicated by the arrow in FIG. 1, dry air is discharged from the upper bellows hose 23 into the washing and dehydrating tub 3 in the vertical direction downward so as to be blown onto the outer peripheral area of the rotor blade disc 4. It has become.

The bottom circulation path 20 communicates with the bottom of the outer tub 2 via a lower bellows hose 26 . The lower bellows hose 26 is connected to the bottom drop portion 31 of the outer tub 2 . The bottom drop-in portion 31 communicates with a washing water drainage channel 42 for drainage via a normally closed drain valve 44 that is opened only during drainage.

The drain valve 44 is closed during the washing operation and the drying operation. The drain valve 44 is opened at the time of draining the washing water, and drains the washing water and rinsing water accumulated in the outer tub 2 to the outside of the washing machine S (outside the machine) through the washing water drain path 42. - 特許庁

The washing machine S is provided with a water level sensor 47 for detecting the water level of the wash water and rinse water accumulated in the outer tub 2 . An air trap 50 is provided near the bottom of the outer tub 2 . An air tube 49 is connected in communication with the air trap 50 , and a water level sensor 47 is connected in communication with the upper end of the air tube 49 .

Washing water and rinsing water accumulated in the outer tub 2 flow from the water circulation paths 51a, 61a into the water circulation paths 51b, 61b, and then flow upward through the water circulation paths 51b, 61b. The lint filter 33 removes the lint from the washing water that has risen through the circulating water channel 51b and enters the washing and dewatering tub 3. - 特許庁On the other hand, the washing water that rises through the circulating water channel 61b is sprayed in the vicinity of the center of the washing and dewatering tub 3 from the slit-shaped discharge port 61c in a shower-like manner.

Next, details of the rotor disk 4 will be described with reference to FIGS. 2 to 7. FIG.
The rotary blade disk 4 is rotatably installed at the center of the bottom of the washing and dewatering tub 3 (see FIG. 1). The rotating blade disc 4 is provided with a plurality of protuberances formed of inclined surfaces that repeatedly act upward components of force on the laundry put on the rotating blade disc 4 by rotating. The washing and dehydrating tub 3 and the rotor disk 4 are selectively rotationally driven by a driving motor 10 (driving section).

FIG. 2 is a perspective view of a rotor disc.
As shown in FIG. 2, the upper surface of the rotor disc 4 is composed of a plurality of raised portions 4a, a plurality of valleys 4b, and an intermediate portion 4c provided between the raised portions 4a and the valleys 4b. be. In the present embodiment, two protuberances 4a formed at positions facing each other across the rotation center (central portion) P of the rotary blade disk 4 are formed at positions opposite each other across the rotation center P of the rotary blade disk 4. and four intermediate portions 4c connecting each raised portion 4a and each valley portion 4b.

In the rotary blade disk 4 of this embodiment, the raised portion 4a and the intermediate portion 4c are continuously connected. Further, the intermediate portion 4c and the valley portion 4b are continuously connected. In this embodiment, being continuously connected means forming a continuous surface when switching from the raised portion 4a to the intermediate portion 4c and when switching from the intermediate portion 4c to the valley portion 4b. do.

The raised portion 4a has a convex inclined surface 4a2 including a relatively high ridgeline compared to the central region (rotation center side) and continuously descending on both sides in the circumferential direction. That is, the raised portion 4a has a ridgeline 4a1 having the highest height at the center in the circumferential direction in the raised portion 4a. The shape of the raised portion 4a in plan view is substantially fan-shaped (see FIG. 3 described later).

In this way, the rotating blade disc 4 is formed with a gently sloping surface (convex inclined surface 4a2) that repeatedly acts upward component force on the laundry put on the rotating blade disc 4 by rotating. A plurality of (two in this embodiment) raised portions 4a are provided.

The valley portion 4b includes a relatively low portion compared to the center region (rotation center side), and has a bottom portion 4b1 (concave inclined surface, valley-shaped concave curved surface) continuously rising on both sides in the circumferential direction. . The bottom portion 4b1 has a so-called bowl shape in which the central portion in the radial direction is low and the inner diameter side portion and the outer diameter side portion are high. Further, the valley portion 4b is configured to be a wider region in the circumferential direction than the raised portion 4a. It should be noted that the shape of the valley portion 4b in plan view is also substantially fan-shaped like the raised portion (see FIG. 3 described later).

The rotary blade disc 4 has two (plurality) ridges 4d, 4d in the valley 4b (the base region of the protuberance 4a). The protrusions 4d are arranged one by one at symmetrical positions in the circumferential direction with the bottom portion 4b2 interposed therebetween. Further, the rotary blade disk 4 is provided with two other ridges 4d (one set of ridges 4d) at positions symmetrical with respect to the rotation center P. As shown in FIG. Thus, in this embodiment, a total of four ridges 4d (two sets of ridges 4d, two pairs of ridges 4d) are provided.

Moreover, the ridge portion 4d has a ridge slant portion 4d1 that gently descends toward the bottommost portion 4b2 of the valley portion 4b. In addition, the two projected streak portions 4d are formed with projected streak inclined portions 4d1 on the side faces facing each other.

A side surface 4d5 of the ridge portion 4d on the opposite side in the circumferential direction from the ridge portion 4d1 is configured to be substantially perpendicular to the surface of the valley portion 4b. As a result, the laundry is easily agitated by the side surfaces 4d5 when the rotary vane disk 4 rotates.

Further, on the upper surface of the rotary blade disc 4, a plurality of spherical crown-shaped curved convex portions 4e are formed. The curved convex portions 4e are arranged dispersedly in the valley portions 4b. By providing these curved convex portions 4e, the laundry is vibrated up and down, which has the effect of improving the detergency.

In addition, the upper surface of the rotor disk 4 is provided with a large number of through holes 4f for water flow and ventilation on both sides in the circumferential direction of the raised portion 4a and in the valley portion 4b. Here, the through holes 4f are not arranged in the top region near the ridge line 4a1 of the raised portion 4a, the ridge portion 4d, and the curved convex portion 4e. By not forming the through-holes 4f near the ridgeline 4a1 or in the ridges 4d, it is possible to suppress catching with the laundry, and reduce damage to the laundry. In addition, by not forming the through hole 4f in the ridge portion 4d, it is possible to prevent the flow of dry air from being obstructed.

FIG. 3 is a plan view (top view) of the rotor disk.
As shown in FIG. 3, the two ridges 4d (one set of ridges 4d) are formed to extend linearly from the outer peripheral end (outermost peripheral end) 4d2 of the rotor disk 4 to the inner peripheral end 4d3. It is In addition, the two protrusions 4d are arranged at positions furthest apart in the circumferential direction at the outer peripheral end 4d2, and arranged at positions closest to each other in the circumferential direction at the inner peripheral end 4d3. In other words, the two ridges 4d are configured so as to form a tapered shape toward the inner side in the radial direction (to have a V shape in plan view).

In addition, the two projected streak portions 4d are configured so that one projected streak inclined portion 4d1 and the other projected streak inclined portion 4d1 are in contact with each other at an inner peripheral end 4d3 to be integrated.

The intermediate portion 4c is formed with a predetermined angular range (for example, 5 degrees) in the circumferential direction and is located between the raised portion 4a and the valley portion 4b. The raised portion 4a and the intermediate portion 4c are connected by a raised boundary portion 4g. The raised boundary portion 4g extends linearly in the radial direction from the center of rotation P when viewed from above. The valley portion 4b and the intermediate portion 4c are connected by a valley boundary portion 4h. The valley boundary portion 4h linearly extends radially from the rotation center P when viewed from above.

FIG. 4 is a schematic cross-sectional view of the intermediate portion taken along line AA of FIG. 3 (only the intermediate portion is cut out). In addition, FIG. 4 shows a case of cutting along a straight line orthogonal to the raised boundary portion 4g.

The intermediate portion 4c has an inclined surface 4c1, a raised boundary portion 4g is positioned at the highest position of the inclined surface 4c1, and a valley boundary portion 4h is positioned at the lowest position of the inclined surface 4c1.

As shown in FIG. 4, the angle (inclination angle θ1) of the tangential line T1 of the intermediate portion 4c at the valley boundary portion 4h from the horizontal plane H is preferably 30 degrees≦θ1≦40 degrees. On the other hand, the angle (tilt angle θ2) of the tangential line T2 of the intermediate portion 4c from the horizontal plane H at the raised boundary portion 4g is preferably 40°<θ2≦60°. Thus, the tilt angle θ2 is configured to be larger than the tilt angle θ1. That is, the intermediate portion 4c is configured to have a so-called “downward convex” curved surface in which the inclination of the tangential line increases from the side of the valley portion 4b to the side of the raised portion 4a.

FIG. 5 is a cross-sectional view of the rotor disc taken along line BB in FIG. In addition, FIG. 5 shows the case of cutting along the ridgeline 4a1 of the raised portion 4a.
As shown in FIG. 5, the raised portion 4a is formed so that the height gradually increases from the center of rotation (center portion of the rotor disc 4) P toward the outer diameter direction (outer diameter side). Further, the ridgeline 4a1 of the raised portion 4a is configured such that the outer diameter side thereof is higher than the flange surface 4s of the rotary blade disc 4. As shown in FIG. Further, the ridgeline 4a1 of the raised portion 4a is configured so that the inner diameter side (center portion side) is lower than the flange surface 4s.

In order to fix the rotary vane disc 4 to the washing/dehydrating driving device (driving motor 10), an upward bulging portion 4t is provided around the rotation center P to secure a space for accommodating a fixing screw (not shown). there is

By the way, the greater the height difference between the raised portion 4a and the trough portion 4b, the greater the vibration of the laundry in the vertical direction, thereby improving the detergency. However, if the raised portion 4a is too high, there is a problem that the space in the washing and dewatering tub 3 for storing the laundry is reduced. Therefore, in the present embodiment, the maximum height h1 of the raised portion 4a from the flange surface is set to 20 mm or more and 25 mm or less to prevent the space for storing the laundry from decreasing.

FIG. 6 is a perspective view showing the shape of the lower surface side of the rotor disk 4. As shown in FIG.
As shown in FIG. 6 , a rear blade 71 is provided on the rear surface (lower surface) of the rotary blade disk 4 . The back blade 71 has a plurality of radial blade portions 71a radially extending from the rotation center and a plurality of circumferential blade portions 71b extending circumferentially.

The radial vane portion 71a is formed in a plate shape, protruding long on the back side of the raised portion 4a, and protruding short on the back side of the valley portion 4b. The circumferential blade portion 71b is formed in a concentric circle shape and is formed to protrude long on the back side of the raised portion 4a. In addition, the circumferential blade portion 71b is arranged so as to intersect with the radial blade portion 71a.

When the rotary blade disc 4 configured in this way rotates, the back blade 71 functions as a centrifugal pump, the pressure near the center of the bottom surface of the rotary blade disc 4 is reduced, and the outer tub 2 (see FIG. 1) and the washing and dehydrating tub 3 (See FIG. 1) is sucked through the through hole 3b provided in the bottom surface of the washing and dewatering tub 3. The washing water sucked from the through hole 3b flows through the water circulation channels 51a and 51b (see FIG. 1) and the lint filter 33 (see FIG. 1), and also flows through the water circulation channels 61a and 61b and the discharge port 61c (see FIG. 1). ), and is dispersed and poured into the washing and dewatering tub 3 .

FIG. 7 is a cross-sectional view of the rotor disc taken along line CC in FIG. In addition, FIG. 7 shows the cutting at the lowest bottom portion 4b2 of the valley portion 4b.
As shown in FIG. 7, the bottommost portion 4b2 of the valley portion 4b has an inner diameter side inclined surface 4b3 and an outer diameter side inclined surface 4b4 so that the inner diameter side and the outer diameter side are higher. The outer diameter side inclined surface 4b4 is configured to be steeper than the inner diameter side inclined surface 4b3. Further, the upper end of the outer diameter side inclined surface 4b4 is higher in height position than the inner diameter side inclined surface 4b3. Further, the outer diameter side inclined surface 4b4 has the same height as the flange surface 4s of the rotary blade disk 4. As shown in FIG. Further, the bottom portion 4b1 has an intermediate inclined surface 4b5 that descends from the inner diameter side inclined surface 4b3 toward the outer diameter side inclined surface 4b4. Thus, the bottom portion 4b1 between the two ridge portions 4d has a gently curved surface from the outer peripheral end 4d2 toward the inner peripheral end 4d3. Also, the gently curved surface has a concave shape with the concave surface facing upward.

In addition, since the outer diameter side inclined surface 4b4 is formed to have a steeper inclination than the inner diameter side inclined surface 4b3, when the drying air is taken in from above the outer peripheral end 4d2 of the rotor disk 4, the loss to the drying air is reduced. It is designed to

In addition, since the intermediate inclined surface 4b5 is an upward inclined surface toward the inner diameter side, the air is directed from the intermediate inclined surface 4b5 to the inner diameter side inclined surface 4b3 without giving a large loss to the dry air from the intermediate inclined surface 4b5 to the inner diameter side inclined surface 4b3. can flow smoothly. As a result, the dry air discharged from the inner diameter side inclined surface 4b3 can be vigorously discharged upward, and the change of clothes can be promoted.

An inner peripheral end 4d3 of the protruding portion 4d is set at a position higher than a lowest point 4d4 of the protruding portion 4d connecting an outer peripheral end 4d2 and an inner peripheral end 4d3 of the protruding portion 4d. As a result, it is possible to construct an air passage that increases the wind speed.

The drying air generated by the drying mechanism 9 is blown from above the rotary blade disc 4 toward the outer peripheral end of the rotary blade disc 4 . Then, when the dry air is blown to the trough portion 4b (bottom portion 4b1) between the two ridge portions 4d (one set of ridge portions 4d), the bottom portion 4b2 (bottom portion 4b1) is blown as indicated by the thick solid arrow. flows from the outer diameter side to the inner diameter side along the bottom surface of the That is, the drying air is introduced as a substantially vertically downward flow at the outer diameter side of the bottommost portion 4b2, and is discharged as a substantially vertically upward flow at the inner diameter end of the bottommost portion 4b2.

Next, the movement of the laundry during washing/drying when using the rotary vane disk 4 of the present embodiment will be described.
In the washing process (washing process), water is supplied so as to accumulate at the bottom of the outer tub 2 while maintaining a water level that does not exceed or slightly exceeds the upper surface of the rotor disk 4 in the subsequent washing process. Then, by dissolving a detergent such as powder, washing water with a high concentration of detergent is generated at the bottom of the outer tub 2 . Then, while washing water is circulated so as to rain down on the laundry, the rotating blade disk 4 is rotated in forward and reverse directions to repeatedly apply an upward force to the laundry, thereby pushing and washing the laundry. In the rinsing process (washing process) after washing, the water level is maintained at a level that does not exceed or slightly exceeds the upper surface of the rotor disk 4, as in the washing process. Then, while circulating the rinsing water supplied so as to accumulate in the bottom of the outer tub 2 so as to sprinkle it on the laundry, the rotating blade disk 4 is rotated in forward and reverse directions to repeatedly apply an upward force to the laundry. As a result, the wash water (detergent component) contained in the laundry is squeezed out to perform rinsing. In the drying process, the air in the outer tub 2 is sucked out while rotating the rotor disk 4 in forward and reverse directions, and after water cooling and dehumidification, the air is heated and circulated so as to be blown into the washing and dehydrating tub 3 to dry the laundry. .

When the rotary vane disk 4 rotates during the washing process, the laundry is pushed up by the inclination of the intermediate portion 4c. At this time, the cleaning power is improved by the beating washing effect when the pushed-up laundry falls and the scrubbing washing effect by the frictional force between the rotor disk 4 and the laundry. Further, since the inclination of the tangential lines T1 and T2 increases from the lowest portion (trough boundary portion 4h) of the intermediate portion 4c to the protruding portion 4a side (protruding boundary portion 4g) (θ2>θ1), the rotary blade disc is formed. Rotation of 4 causes the lower garment to be flipped upward, promoting exchange of the upper and lower garments. This change of clothes reduces uneven washing of the clothes.

In the intermediate portion 4c, the inclination angle θ2 on the raised portion 4a side is larger than the inclination angle θ1 on the valley portion 4b side. In this way, by adopting a structure in which the inclination angle increases from the intermediate portion 4c to the raised portion 4a, an upward force is applied to the laundry (clothing), and the laundry that is piled up and down is not replaced. entanglement of the laundry is suppressed.

In addition, when the rotary blade disc 4 rotates, the laundry vibrates up and down on the upper surface of the rotary blade disc 4 due to the raised portion 4a. be.

Further, even when the rotary vane disk 4 rotates during the drying process, the laundry is pushed up by the inclination of the intermediate portion 4c. Further, since the inclination of the tangential lines T1 and T2 increases from the bottommost portion (the valley boundary portion 4h) of the intermediate portion 4c to the side of the raised portion 4a (the raised boundary portion 4g) (θ2>θ1), the rotary blade disc is formed. Rotation of 4 causes the lower garment to be flipped upward, promoting exchange of the upper and lower garments. This change of clothes reduces uneven drying of the clothes.

By the way, in the conventional rotary blade disk, when air is blown from above into the washing and dehydrating tub to dry the laundry, the laundry is entangled with each other, making it difficult to spread the clothes by the wind. rice field. According to this embodiment, since the slope of the tangent line increases from the lowest portion (the valley boundary portion 4h) of the intermediate portion 4c to the protruding portion 4a side, the laundry is flipped up and the laundry is separated from each other. Entanglement is suppressed. As a result, the laundry is easily spread out in the washing and dewatering tub 3 by the drying air, and drying wrinkles are reduced.

Further, in the present embodiment, the raised portion 4a and the trough portion 4b are provided bilaterally symmetrically (symmetrically with respect to the rotation center P). Therefore, the movement of the laundry does not change regardless of whether the rotary vane disk 4 is rotated in the left or right direction, so that it is difficult for the laundry to become tangled or uneven, and uneven washing and damage to the laundry can be suppressed.

In addition, in the present embodiment, by facilitating the exchange of clothes during washing and agitation, the lint present between the clothes can be easily removed together with the washing liquid, thereby improving the lint collection performance.

Further, when the rotating blade disk 4 rotates, if the amount of laundry is large, the laundry collides with the ridge 4d before colliding with the raised portion 4a, generating an upward force component. Due to this force component, the laundry has an upward velocity component, and the bump 4a suppresses the impact when the laundry is flipped up. As a result, there is an effect of reducing the damage to the cloth and the load on the driving section (driving motor 10).

Moreover, the ridge portion 4d has a ridge slant portion 4d1 that gently descends toward the bottommost portion 4b2 of the rotary blade disc 4. As shown in FIG. By providing the ridge sloping portion 4d1, it is possible to increase the effect of imparting an upward component force to the laundry, and at the same time, reduce the impact when colliding with the ridge 4d, thereby reducing damage to the cloth.

In the trough portion 4b, the two ridge portions 4d, which are arranged at circumferentially symmetrical positions with respect to the bottom portion 4b2, extend radially from the outer peripheral end 4d2 of the rotary blade disk 4 toward the inner peripheral end 4d3. Connected at a given height. Further, the ridges 4d arranged to face each other have a shape (V-shaped or V-shaped in plan view) narrowed from the outer peripheral end 4d2 toward the inner peripheral end 4d3. As a result, when air is blown into the washing and dehydrating tub 3 from above the rotor disk 4, an air path can be formed to increase the wind speed from the outer peripheral end 4d2 to the inner peripheral end 4d3. A wind blowing upward is generated at . By forming such a flow of air, the clothes can be dried while being lifted from the bottom to the top, which is effective in suppressing wrinkles during drying.

Moreover, the ridge portion 4d arranged to face each other has a ridge slope portion 4d1 that gently descends toward the bottommost portion 4b2 of the rotor disk 4. As shown in FIG. As a result, the flow path is narrowed from the ridges 4d arranged to face each other toward the bottom portion 4b2, so that the wind speed from the outer peripheral end 4d2 to the inner peripheral end 4d3 can be further increased, and the wind speed from the outer peripheral end 4d2 to the inner peripheral end 4d3 can be further increased. It is possible to further increase the flow of wind that blows up. By forming such a flow of air, the clothes can be dried while being lifted from the bottom to the top, which is effective in further suppressing wrinkles during drying.
That is, when air is blown into the washing tub from above to dry the clothes, the washing machine forms an air path that lifts the clothes instead of holding them down, suppresses uneven drying, and further suppresses wrinkles. can be provided.

As described above, in the washing machine S of the present embodiment, the washing/drying tub 3, the rotary blade disc 4 provided at the bottom of the washing/drying tub 3, and the washing/drying tub 3 are included to supply the washing water. An outer tub 2 for storing, a driving motor 10 for rotationally driving the washing and dewatering tub 3 and the rotary blade disc 4, and a discharge port 23a for discharging dry air from the upper part of the washing and dehydrating tub 3 toward the rotary blade disc 4. , has The rotary blade disc 4 has, on the upper surface of the rotary blade disc 4, a plurality of raised portions 4a, a plurality of valley portions 4b, and an intermediate portion 4c provided between the raised portions 4a and the valley portions 4b. . The valley portion 4b has two ridges 4d radially extending from the outer peripheral end 4d2 toward the inner peripheral end 4d3. The two ridges 4d have a tapered shape that approaches from the outer peripheral end 4d2 toward the inner peripheral end 4d3 (see FIGS. 2 and 3). A bottom portion 4b1 between the two ridge portions 4d has a gently curved surface from an outer peripheral end 4d2 toward an inner peripheral end 4d3 (see FIGS. 2 and 3). According to this, since the dry air discharged from the discharge port 23a provided above the rotary blade disk 4 can be discharged upward from the center side, it is possible to promote the replacement of clothes and suppress uneven drying. Furthermore, dry wrinkles can also be suppressed.

In addition, in this embodiment, the two ridges 4d have ridges 4d1 that descend toward the bottom 4b1 on the sides facing each other (see FIG. 2). According to this, it is possible to apply an upward force to the clothes, and to facilitate changing of the clothes.

Further, in this embodiment, the height of the inner peripheral end 4d3 of the ridge portion 4d is higher than the lowest point 4d4 of the ridge portion 4d connecting the outer peripheral end 4d2 and the inner peripheral end 4d3 (FIG. 7). reference).

Further, in this embodiment, the raised portion 4a is formed at a position higher than the highest position of the intermediate portion 4c, and the valley portion 4b is formed at a position lower than the lowest position of the intermediate portion 4c. The raised portion 4a has a convex inclined surface 4a2, and the valley portion 4b has a bottom portion 4b1 (concave inclined surface). The intermediate portion 4c has an inclined surface 4c1 and is continuously connected to the valley portion 4b and the raised portion 4a. The inclination angle θ2 of the inclined surface 4c1 of the intermediate portion 4c on the raised portion 4a side is larger than the inclination angle θ1 on the valley portion 4b side (see FIG. 4). According to this, during the drying process, the clothes on the lower side are flipped up by the rotation of the rotary vane disk 4, and the upper and lower clothes are promoted to be replaced, so that the drying unevenness of the clothes is reduced. Also, during the washing process, the laundry is pushed up by the inclination of the intermediate portion 4c, so that the washing effect when the pushed-up laundry falls down and the frictional force between the rotary vane disc 4 and the laundry. The cleaning power is improved by the scrubbing effect. In addition, the rotation of the rotary blade disk 4 flips up the clothes on the lower side and promotes the change of the upper and lower clothes, so that the change of the clothes reduces uneven washing of the clothes.

In this embodiment, the inclination angle θ1 of the intermediate portion 4c on the side of the valley portion 4b is 30°≦θ1<40°, and the inclination angle θ2 of the intermediate portion 4c on the side of the raised portion 4a is 40°<θ2≦ 60° (see FIG. 4). According to this, the replacement of the upper and lower clothes is promoted, and the drying unevenness of the clothes is reduced.

Further, the rotary blade disc 4 of the present embodiment is a rotary blade disc for the washing machine S in which dry air is discharged from the upper part of the washing and dewatering tub 3, and has a plurality of raised portions 4a and a plurality of It has a valley portion 4b and an intermediate portion 4c provided between the raised portion 4a and the valley portion 4b. The valley portion 4b has two ridges 4d radially extending from the outer peripheral end 4d2 toward the inner peripheral end 4d3. The two ridges 4d have a tapered shape that approaches from the outer peripheral end 4d2 toward the inner peripheral end 4d3 (see FIGS. 2 and 3). A bottom portion 4b1 between the two ridge portions 4d has a gently curved surface from an outer peripheral end 4d2 toward an inner peripheral end 4d3 (see FIGS. 2 and 3). According to this, since the dry air discharged from the discharge port 23a provided above the rotary blade disk 4 can be discharged upward from the center side, it is possible to promote the replacement of clothes and suppress uneven drying. Furthermore, dry wrinkles can also be suppressed.

Further, in this embodiment, the upper portion of the convex inclined surface 4a2 gradually rises from the rotation center P of the rotary blade disk 4 toward the outer diameter side (see FIG. 5). According to this, when the clothes are agitated during the washing operation, the clothes move outward due to the centrifugal force, but the larger the height difference between the protuberances 4a and the valleys 4b, the more the clothes move up and down, thereby improving the washing power. do. In addition, even during the drying operation, it is possible to suppress uneven drying by facilitating the replacement of the top and bottom of the clothes.

Further, in the present embodiment, a plurality of through-holes are provided in the valley portion 4b and the intermediate portion 4c, and no through-holes are provided in the raised portion 4a (see FIGS. 2 and 3). According to this, resistance is provided by forming a through hole in the raised portion 4a. As a result, it is possible to suppress catching with the laundry, and reduce the damage to the laundry.

Moreover, in this embodiment, the valley portion 4b has a plurality of ridge portions 4d. According to this, when the rotary blade disc 4 rotates, the garment can be lifted up in advance by the protruding portion 4d before the garment is lifted up by the intermediate portion 4c. As a result, fabric damage and motor load can be reduced.

Moreover, the present invention is not limited to the above-described embodiments, and includes various modifications. For example, in the present embodiment, the raised boundary portion 4g, the valley boundary portion 4h, and the ridge portion 4d are formed in a linear shape when viewed from above, but they may be curved in a bow shape.

1 Outer Frame 2 Outer Tub 3 Washing and Dehydrating Tub (Washing Tub)
4 rotor disk 4a raised portion 4a1 ridge line 4a2 convex inclined surface 4b valley portion 4b1 bottom (concave inclined surface)
4b2 lowest part 4c intermediate part 4c1 inclined surface 4d ridge part 4d1 ridged inclined part (inclined part)
4d2 outer peripheral end 4d3 inner peripheral end 4d4 lowest point 4e curved convex portion 4f through hole 4g raised boundary portion 4h valley boundary portion 10 drive motor (driving portion)
23a Outlet 71 Back blade S Washing machine θ1 Inclination angle on valley side θ2 Inclination angle on raised portion side

Claims (5)

a washing tub;
a rotor disc provided at the bottom of the washing tub;
an outer tub containing the washing tub and storing washing water;
a driving unit that rotationally drives the washing tub and the rotary blade disc;
and a discharge port for discharging dry air from the upper part of the washing tub toward the rotary blade disc,
The rotary blade disc has a plurality of raised portions, a plurality of valley portions, and an intermediate portion provided between the raised portions and the valley portions on the upper surface of the rotary blade disc,
The trough has at least two ridges extending radially from the outer peripheral end to the inner peripheral end,
The two ridges have a drawing shape that approaches from the outer peripheral end toward the inner peripheral end,
a bottom portion between the two ridges has a gently curved surface from the outer peripheral end toward the inner peripheral end;
The two ridges have slanted portions that descend toward the bottom on sides facing each other, and the slanted portion of one ridge and the slanted portion of the other ridge at the inner peripheral end. A washing machine characterized in that the washing machine is configured to be in contact with and to be integrated . The washing machine according to claim 1 ,
A washing machine, wherein the height of the inner peripheral end of the ridge portion is higher than the lowest point of the ridge portion that connects the outer peripheral end and the inner peripheral end. The washing machine according to claim 1 or claim 2 ,
The raised portion is formed at a position higher than the highest position of the intermediate portion,
The valley portion is formed at a position lower than the lowest position of the intermediate portion,
the raised portion has a convex inclined surface;
the valley has a concave inclined surface,
the intermediate portion has an inclined surface and is continuously connected to the valley and the ridge;
A washing machine, wherein an inclination angle of the inclined surface of the intermediate part on the side of the raised part is larger than an angle of inclination on the side of the valley part. The washing machine according to any one of claims 1 to 3 ,
The inclination angle θ1 of the valley portion side of the intermediate portion is 30°≦θ1<40°,
The washing machine, wherein an inclination angle θ2 of the intermediate portion on the side of the raised portion satisfies 40°<θ2≦60°. A rotary vane disk for a washing machine that discharges dry air from the upper part of a washing tub,
The upper surface has a plurality of raised portions, a plurality of valleys, and an intermediate portion provided between the raised portions and the valleys, wherein the valleys extend from the outer peripheral end to the inner peripheral end. , having at least two radially extending ridges;
The two ridges have a drawing shape that approaches from the outer peripheral end toward the inner peripheral end,
a bottom portion between the two ridges has a gently curved surface from the outer peripheral end toward the inner peripheral end;
The two ridges have slanted portions that descend toward the bottom on sides facing each other, and the slanted portion of one ridge and the slanted portion of the other ridge at the inner peripheral end. A rotary blade disc characterized in that it is configured so that it contacts and is integrated .

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