JP6223274B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine provided with a circulation channel for circulating washing water in a washing and dewatering tub.

  In recent years, resource saving by water-saving and detergent-saving has been strongly demanded as a demand for customers of fully automatic washing machines, and realizing it has become a very important issue. In order to achieve the object, conventionally, a stirring blade provided on the bottom surface of the washing and dewatering tub is rotatably arranged and a plurality of circulation water channels are independently formed up to the top of the washing and dewatering tub. A technique has been proposed in which washing water is raised through this circulating water channel by rotation of a blade provided on the back surface, and poured into a washing and dewatering tub in a shower shape from the upper opening (see, for example, Patent Document 1). ).

JP 2012-157410 A

  However, the washing machine described in Patent Document 1 cannot increase the circulation flow rate of washing water while maintaining water saving, and cannot further improve the cleaning power.

  The subject of this invention is providing the washing machine which can improve a detergency while maintaining water saving.

The present invention includes an outer tub, a washing and dewatering tub rotatably accommodated in the outer tub, an agitating blade rotatably supported on an inner bottom portion of the washing and dewatering tub, and a lower surface of the agitating wing A blade portion provided on the agitator, a driving means for rotationally driving the stirring blade and the washing / dehydrating tub, a water supply means for supplying water into the outer tub, and a rotation of the wing portion to rotate the washing / dehydrating tub. Washing water circulation means that raises the wash water in the inner bottom and flows into the washing and dewatering tub, in the washing machine, the washing water circulation means, a pedestal portion provided so as to surround the outer periphery of the stirring blade, A circulation channel member disposed along the axial direction on the inner wall surface of the washing and dehydrating tub, and the pedestal portion is formed along the circumferential direction of the washing and dehydrating tub, and A guide path for guiding the washing water from the peripheral wall surface toward the circulation channel member , And a bridge portion for passing the guide path sieved the circumferential direction, the circulation flow path member includes a lower support portion is positioned above the guide path being supported on the base portion, from the lower support portion A locking protrusion formed so as to protrude downward, and the guide path intersects a first guide path provided within a width of the lower support part and a lower part of the lower support part from the first guide path. A second guide path extending toward the circumferential wall surface on the outer side in the circumferential direction from the circumferential end portion of the lower support portion of the circulation flow path member, and the lower support portion is the locking The protrusion is locked by being inserted into a locking hole formed through the bridging portion in the vertical direction .

  ADVANTAGE OF THE INVENTION According to this invention, the washing machine which can improve detergency while maintaining water saving can be provided.

It is a figure which shows the internal structure of the washing machine of embodiment of this invention. It is a longitudinal cross-sectional view which shows the internal structure of a washing and dewatering tank. It is a perspective view which shows the front side of a rotary blade. It is a perspective view which shows the back side of a rotary blade. It is a cross-sectional perspective view which shows the inside of a washing and dewatering tank. It is a top view which shows the structure of the back surface of a circulation flow path member. It is a disassembled cross-sectional perspective view which shows the washing and dehydration tank except a stirring blade. It is a cross-sectional perspective view which shows the washing and dehydration tank except a stirring blade. It is a cross-sectional perspective view when the washing and dewatering tub is viewed from another direction. It is a side view which shows a washing and dewatering tank. It is a top view which shows the baseplate of a washing and dewatering tank. It is the II sectional view taken on the line of FIG. It is a figure which shows typically the shower shape from four circulation flow path members. It is sectional drawing which shows the baseplate of the washing machine of other embodiment.

  Hereinafter, modes for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the drawings as appropriate. In the following, a washing machine (so-called fully automatic washing machine) that can perform washing, rinsing, and dehydrating will be described as an example. However, a washing machine that can perform washing, rinsing, dehydrating and drying (so-called washing machine) The present invention can also be applied to a vertical washer / dryer.

FIG. 1 is a diagram illustrating an internal configuration of a washing machine according to an embodiment of the present invention.
As shown in FIG. 1, the washing machine 1 is made of a synthetic resin in which a washing and dewatering tub 3 is rotatably installed by a vibration isolator 4 in an outer frame 5 made of a substantially box-shaped steel plate containing an internal mechanism. The outer tub 6 is suspended. An upper surface cover 9 made of synthetic resin having a control unit 7 as a control means and an electromagnetic water supply valve 16 (water supply means) as a water supply means is provided at the upper part of the outer frame 5. A base member 10 made of synthetic resin is provided.

  Four leg portions 10a are inserted into the four corners of the base member 10, and the four leg portions 10a directly contact the floor surface to support the main body of the washing machine 1 (in FIG. 1, 2). Only the location is shown). In addition, a hose outlet 11 a for pulling out the drainage hose 11 is provided at the rear part of the base member 10.

  A top cover 9 made of a synthetic resin is attached to the upper part of the outer frame 5, and a laundry input port 9 a for taking in and out the laundry 12 is provided at the center of the top cover 9. A lid 9b for opening and closing the insertion port 9a is provided. The electrical components included in the upper surface cover 9 are provided at two locations on the front side and the rear side of the upper surface cover 9, and are protected by a front protective cover 9c on the front rear surface and a rear protective cover 9d on the rear rear surface. . In a space formed by the upper surface cover 9 and the front protective cover 9c, a power switch 13, an input switch unit 14 for operating each process such as washing, a progress display unit 14a for displaying the progress of each process, etc. Is housed.

  In a space formed by the upper surface cover 9 and the rear protective cover 9d, there are a control unit 7 as a control means, a pressure-sensitive water level sensor 15 for detecting the water level, and an electromagnetic water supply valve 16 for supplying washing water to the outer tub 6. Etc. are stored. The control unit 7 may be arranged either in the space constituted by the front protective cover 9c or in the space constituted by the rear protective cover 9d. Further, a water supply hose 17 connected to a water tap is provided outside the rear portion of the top cover 9, and the other end is connected to an electromagnetic water supply valve 16.

  The outer frame 5 has a bottomed substantially cylindrical outer tub 6 for storing washing water, and the outer tub 6 is hung from the upper end of the outer frame 5 and supported by a coil spring or an elastic rubber vibration isolator 4. It is supported by drooping vibration isolation.

  The outer tub 6 is formed of a synthetic resin, and an air trap 6a for detecting the water level is formed on the lower wall surface. The water level of the washing water in the outer tub 6 is detected from the air trap 6a through the air tube 6b by a pressure-sensitive water level sensor 15 which is a water level detecting means. When performing the washing process or the like, the electromagnetic water supply valve 16 is opened by the command of the control unit 7, and the washing water is supplied into the outer tub 6. The water level sensor 15 detects that the water level has reached a predetermined level, and the electromagnetic water supply valve 16 is closed according to a command from the control unit 7 to stop water supply.

  A drainage valve 18 and a drainage hose 11 that are drainage devices are provided outside the bottom of the outer tub 6, and are connected to the drainage hose 11 through the outer tub drainage port 6 c and the drainage valve 18 at the bottom of the outer tub 6. When performing the dehydration process or the like, the drain valve 18 is opened by a command from the control unit 7, and the wash water in the outer tub 6 is drained from the other end of the drain hose 11 to the outside of the washing machine 1.

  In addition, there is a gap between the inner periphery of the outer tub 6 and the outer periphery of the washing / dehydrating tub 3, and in order to prevent the laundry from entering the gap and to maintain the rigidity of the entire outer tub 6, A tank cover 20 is provided on the upper surface so as to cover the upper surface of the fluid balancer 32 provided in the washing and dewatering tank 3.

  Further, a driving motor 22 and a speed reduction mechanism 24 that decelerates the driving motor 22 are attached to the outer side of the bottom of the outer tub 6 via a steel plate mounting base 21. An induction motor or a synchronous motor is used for the drive motor 22. The drive mechanism may drive the stirring blade 2 via the V-belt (not shown) and the speed reduction mechanism 24 by the drive motor 22, and the drive shaft of the drive motor 22 is the same as the speed reduction mechanism 24. It may be configured on an axis.

  The speed reduction mechanism 24 includes an electrically operated clutch mechanism 24a and a planetary gear speed reduction mechanism 24b for switching between a washing operation and a dewatering operation. The electric operation clutch mechanism 24a rotates the stirring blade 2 left and right with the washing / dehydrating tub 3 stationary (stirring mode), or rotates the washing / dehydrating tub 3 and the stirring blade 2 integrally in the same direction. (Dehydration mode) can be selected.

FIG. 2 is a longitudinal sectional view showing the washing machine according to the embodiment of the present invention.
As shown in FIG. 2, the washing and dewatering tub 3 includes a body portion (body plate) 31, a fluid balancer 32, and a bottom plate 33.

  The body portion 31 is formed of a stainless steel plate in a substantially cylindrical shape, and a dewatering hole 31a for separating and discharging the washing water contained in the laundry 12 (see FIG. 1) on the peripheral wall from the laundry 12 by centrifugal force. (See FIG. 1). The dewatering hole 31a is shown only in FIG. 1 and is not shown in other drawings.

  The fluid balancer 32 has a function of suppressing the vibration of the outer tub 6 (see FIG. 1) due to the bias of the laundry 12 by the balance fluid moving in the direction opposite to the bias of the laundry 12. Is provided at the upper edge. In addition, the fluid balancer 32 is disposed such that the inner peripheral surface protrudes radially inward from the peripheral wall of the body portion 31.

  The bottom plate 33 is formed to have an upward curved cross-sectional shape, and includes a disk-shaped bottom portion 33 a and a side portion 33 b that rises upward from the peripheral edge portion of the bottom portion 33 a, and is fixed to the lower end portion of the body portion 31. It is worn. The inner wall portion 33c at the boundary from the bottom portion 33a to the side portion 33b has an R shape (curved shape). In addition, the bottom 33 a is provided with a plurality of water inlets 33 a 1 communicating with the outer tub 6.

  A rotatable stirring blade 2 is provided on the inner peripheral side of the bottom plate 33 at the bottom of the washing and dewatering tub 3. The stirring blade 2 has a large diameter that covers most of the bottom plate 33, is curved upward so that the peripheral edge is pushed up, is formed in a dish shape, and receives the laundry 12 (see FIG. 1). It is configured to rotate in a supported state.

FIG. 3 is a perspective view showing the front side of the rotor blade.
As shown in FIG. 3, the stirring blade 2 has a convex portion 2 a that is raised at a portion of the rotation center O and has a convex shape at a position facing the rotation center O, and a convex portion 2 a and a convex portion 2 a. The concave portions 2b and 2b are formed in a concave shape in the circumferential direction between them, and the concave and convex shapes are repeated in the circumferential direction. Further, the stirring blade 2 is formed with a plurality of holes 2c communicating with the front surface and the back surface.

FIG. 4 is a perspective view showing the back side of the rotor blade.
As shown in FIG. 4, back blades 2 s (blade portions) extending radially from the rotation center O are formed on the back surface (lower surface) of the stirring blade 2. The back blades 2s are arranged at equal angles in the circumferential direction (in this embodiment, every 30 degrees). Further, the back blade 2s at the highest position of the convex portion 2a is formed with the highest vertical height H on the outer peripheral side. Moreover, it forms so that height may become low as it leaves | separates in the circumferential direction from the back blade | wing 2s of the highest position of the convex-shaped part 2a. A plurality of reinforcing plates 2t are concentrically or substantially concentrically provided around the rotation center O on the back surface of the stirring blade 2.

  Further, the rotation of the stirring blade 2 is reduced in the stirring blade 2 by the rotation of the driving motor 22 (see FIG. 1) being decelerated by the planetary gear speed reduction mechanism 24b (see FIG. 1) provided in the speed reduction mechanism 24 (see FIG. 1). The speed is rotated at 90 to 150 revolutions per minute, for example. Further, the stirring blade 2 repeats normal rotation / reverse rotation according to a command from the control unit 7 (see FIG. 1), and the laundry 12 put into the washing and dewatering tub 3 is stirred up and down to perform washing, rinsing, and the like. I do.

  In this way, by making the shape of the surface of the stirring blade 2 symmetric (see FIG. 3), the shape of the back blade 2s of the stirring wing 2 can also be made symmetric, so that the circulation channel described later The amount of water sprayed from the openings 26a, 27a, 28a, 29a of the members 26, 27, 28, 29 can be evenly sprinkled regardless of whether the stirring blade 2 rotates clockwise or counterclockwise.

FIG. 5 is a cross-sectional perspective view showing the inside of the washing and dewatering tub, and FIG. 6 is a plan view showing the structure of the back surface of the circulation channel member.
As shown in FIG. 5, circulation flow path members 26, 27, 28, and 29 are provided at four locations in the circumferential direction on the inner peripheral surface of the washing and dewatering tub 3. 9). The circulation flow path members 26, 27, 28 and 29 are arranged on the inner wall surface of the washing / dehydrating tub 3 along the axial direction of the washing / dehydrating tub 3.

  The circulation channel member 26 and the circulation channel member 27 are provided at positions facing each other around the rotation axis G of the washing and dewatering tub 3 (see FIG. 9). The circulation channel member 28 and the circulation channel member 29 are provided at positions facing each other around the rotation axis G of the washing and dewatering tub 3. That is, the four circulation flow path members 26, 27, 28, and 29 are provided at different positions in the circumferential direction by 90 ° about the rotation axis.

  The circulation flow path members 26, 27, 28, and 29 are configured by a substantially plate-like member extending in the vertical direction with a predetermined width, and from the vicinity of the upper part of the stirring blade 2 disposed in the bottom plate 33, the lower end of the fluid balancer 32 It extends to. Further, the circulation flow path member 26 and the circulation flow path member 27 are provided with an opening 26a and an opening 27a (see FIG. 9) at substantially the same height at the top thereof, respectively, so that washing water (washing liquid) can be supplied. It spreads on the upper part of the laundry 12 (refer FIG. 1). The circulation channel member 28 and the circulation channel member 29 are respectively provided with an opening 28a and an opening 29a at substantially the same height at the upper portion thereof. It is lower than the height of the portion 27a. By providing the openings 26a and 27a and the openings 28a and 29a having different heights as described above, even when the laundry 12 is small and the water level is low, the circulation channel member 28 and the circulation channel member 29 are interposed. You can circulate the washing water and spray it as a shower. On the contrary, even when there are many clothes and the water level is immersed in water beyond the opening 28a of the circulation channel member 28 and the opening 29a of the circulation channel member 29, the opening 26a of the circulation channel member 26 and the circulation channel Water can be sprayed from the opening 27a of the member 27 as a shower.

  The circulation flow path members 28 and 29 are provided with filter members 28b and 29b for collecting lint and the like. The filter members 28b and 29b are configured to be detachable from the circulation flow path members 28 and 29. In FIG. 5, illustration of the lint filter attached to the filter members 28b and 29b is omitted.

  In addition, one circulation flow path member 29 is provided with an input port 29c for supplying detergent together with the filter member 29b. By introducing the detergent from the insertion port 29 c, the detergent can be introduced to the bottom of the outer tub 6 without contacting the laundry 12.

  As shown in FIG. 6, the circulation flow path member 26 is formed of synthetic resin and has a water conduit 26 c formed integrally with the resin on the back surface thereof, and is independent between the washing and dewatering tub 3. A circulating water channel 26d is formed. The circulating water channel 26d is configured by arranging a pair of ribs 26c1 and 26c1 on both the left and right sides. The rib 26c1 has an inclined rib 26c2 that linearly extends upward from the lower part to the upper part, and that is inclined outward with respect to the vertical direction so that the flow path width gradually increases at the upper end part. .

  Further, an inflow port 26e for allowing the washing water to flow into the circulation water channel 26d is provided at the lower portion of the circulation channel member 26. In addition, an opening 26a for sprinkling a shower as an outlet of the circulation water channel 26d is provided at the upper part of the circulation channel member 26.

  Further, fixing portions 26f, 26g, and 26g for fixing the circulation flow path member 26 to the body portion 31 are provided on the back surface of the circulation flow path member 26 at the center portion in the width direction of the water conduit 26c. In addition, on the back surface of the circulation channel member 26, a plurality of latching claws 26h for latching the circulation channel member 26 to the body portion 31 are formed outside the rib 26c1 in the width direction.

  By attaching packing to the aforementioned ribs 26c1 and 26c1 (including the inclined ribs 26c2) and fixing the circulation flow path member 26 to the washing and dewatering tub 3 via the fixing portions 26f, 26g, and 26g, the inlet 26e The washing water that has flowed in is configured to flow out from the opening 26a without leaking in the middle.

  In the washing machine 1 provided with such a circulation flow path member 26, a pump chamber formed by the inner peripheral side (inner bottom part) of the bottom plate 33 and the outer peripheral side of the back blade 2 s provided on the back surface of the stirring blade 2. A circulation water channel 26d is provided in communication with R (see FIG. 1). Then, the washing water is pushed out by the centrifugal force generated by the rotation of the back blade 2s provided on the back side of the stirring blade 2, so that the washing water rises through the circulation water channel 26d, and the circulation flow channel member 26 Washing water is poured intermittently from the opening 26a provided in the upper part.

FIG. 7 is an exploded cross-sectional perspective view showing the washing and dewatering tank without the stirring blades, and FIG. 8 is a cross-sectional perspective view showing the washing and dewatering tank without the stirring blades. In the following description, the circulation channel member 26 side will be described as an example. However, since the circulation channel member 27 side has the same configuration as that of the circulation channel member 26 side, redundant description will be omitted.
As shown in FIG. 7, the base plate 33 is provided with a pedestal portion 34 on which the lower portion of the circulation channel member 26 is supported. The pedestal 34 supports the lower support 26 i of the circulation flow path members 26, 27, 28, and 29 and has a shape protruding radially inward (on the stirring blade 2 side). The pedestal portion 34 includes an upper step portion 34 a located above the stirring blade 2 and a lower step portion 34 b corresponding to the height of the stirring blade 2, and is configured in a step shape. A circumferential wall surface 34c extending in the circumferential direction so as to surround the outer periphery of the stirring blade 2 is formed in the lower step portion 34b. The stirring blade 2 is prevented from contacting the peripheral wall surface 34c.

  In addition, the pedestal portion 34 is provided with a guide path 34d extending from the peripheral wall surface 34c toward the radially outer side at a position corresponding to the circulation flow path member 28 in the circumferential direction. The guide path 34d is formed narrower than the circulation flow path member 28. The guide path 34d includes a first guide path 34d1 extending in the radial direction, and a second guide path 34d2 (flow path expanding portion) extending from the first guide path 34d1 toward the peripheral wall surface 34c. . Further, the circumferential end 34 d 3 of the second guide path 34 d 2 on the circumferential wall surface 34 c side is located on the outer side in the circumferential direction with respect to the circumferential end 26 s of the circulation flow path member 26.

  Further, on the pedestal portion 34, support portions 34e that support both ends of the lower support portion 26i (lower support portion) of the circulation channel member 26 are formed on both sides in the width direction of the guide path 34d. The support part 34e has a concave shape corresponding to the plate thickness of the lower support part 26i of the circulation flow path member 26, and the lower support part 26i of the circulation flow path member 26 is fitted to the support part 34e, thereby supporting the lower support. The surface of the part 26i and the surface of the pedestal part 34 are configured to be flush with each other.

  The pedestal portion 34 is formed with a bridging portion 34f so as to extend from one support portion 34e on both sides of the guide path 34d to the other support portion 34e. The bridging portion 34f is formed in an L shape in a longitudinal sectional view, and includes a vertical plate 34f1 extending in the vertical direction and a horizontal plate 34f2 extending radially inward from the lower end of the vertical plate 34f1. The tip 34f3 of the horizontal plate 34f2 is curved and formed to have the same curvature as the peripheral wall surface 34c, and is disposed at a position corresponding to the peripheral wall surface 34c. Further, the horizontal plate 34f2 is formed with locking holes 34f4 penetrating in the vertical direction at intervals in the circumferential direction.

  The lower support portion 26i of the circulation flow path member 26 is formed with a plurality of locking projections 26j protruding downward at intervals in the circumferential direction at a position corresponding to the bridging portion 34f. The opening 26a formed at the upper end of the circulation channel member 26 has an upper overhang 26a1 protruding inward of the washing and dewatering tub 3 along the upper edge of the opening 26a, and an opening 26a. A lower projecting portion 26a2 projecting inward of the washing and dewatering tub 3 along the lower edge. Moreover, the both ends of the width direction of the opening part 26a are comprised so that it may become wide. Thereby, the watering range of the washing water sprayed from the opening part 26a can be expanded.

  As shown in FIG. 8, the lower support portion 26 i of the circulation flow path member 26 is locked to the bridging portion 34 f of the pedestal portion 34 by inserting the locking protrusion 26 j into the locking hole 34 f 4. With such a configuration, when the washing water circulates, it is possible to prevent problems such as the circulation flow path member 26 being lifted from the support portion 34e (see FIG. 7) of the pedestal portion 34. Moreover, by setting it as such a structure, the boundary of the 1st guide path 34d1 and the 2nd guide path 34d2 can be located in the back | inner side (radial direction outer side).

FIG. 9 is a cross-sectional perspective view of the washing and dewatering tub when viewed from another direction. The circulation channel member 28 shown in FIG. 9 includes a filter member 28b, and the difference from the circulation passage member 29 is only the presence / absence of an input port 29c (see FIG. 7) for introducing the detergent. Therefore, in the following description, the circulation channel member 28 is described as an example, and description of the circulation channel member 29 is omitted.
As shown in FIG. 9, the pedestal portion 34 is provided with a guide path 34 g that guides the wash water pushed outward by the stirring blade 2 to the circulation flow path member 28. Further, as described above, the opening 28 a of the circulation flow path member 28 is formed at a position lower than the opening 26 a of the circulation flow path member 26. The guide path 34g of the circulation channel member 28 of the present embodiment does not include a channel expansion portion corresponding to the second guide path 34d2, unlike the guide path 34d of the circulation channel member 26. Similarly, the circulation flow path member 29 is not provided with a flow path enlarged portion.

10 is a side view showing the washing / dehydrating tub, FIG. 11 is a plan view showing the bottom plate of the washing / dehydrating tub, and FIG. 12 is a cross-sectional view taken along the line II in FIG. In FIG. 10, the fluid balancer 32 is not shown.
As shown in FIG. 10, the body portion 31 is formed with a latching hole 31 b into which the latching claw 26 h of the circulation channel member 26 is inserted and latched. Moreover, the trunk | drum 31 and the baseplate 33 are fixed by the predetermined method at intervals in the circumferential direction. Although not shown, the body portion 31 and the fluid balancer 32 are also fixed by the same method.

  As shown in FIG. 11, a part of the pedestal 34 so that the flow path side surface of the second guide path 34 d 2 intersects the lower side of the lower support part 26 i (see FIG. 8) of the circulation flow path member 26. Is cut out, and the entrance (inlet) of the guide path 34d is formed wider than in the prior art.

  As shown in FIG. 12, the length in the depth direction parallel to the flow path side surface of the first guide path 34d1 of the guide path 34d is L1, and the circumferential length of the flow path side surface of the second guide path 34d2 is L2. The length L2 is longer than the length L1.

  In addition, the angle θ of the side surface of the second guide path 34d2 with respect to the straight line in the depth direction of the guide path 34d is preferably set to 20 degrees or more. If the angle θ is less than 20 degrees, the washing water is not sufficiently taken into the guide path 34d, and the circulation flow rate of the washing water cannot be increased to the extent that the washing power is improved.

  Thereby, when the stirring blade 2 (see FIG. 5) rotates and the washing water is pushed outward by the rotation of the back blade 2s, the pushed washing water can be easily taken into the guide path 34d, and the circulation channel member The amount of washing water circulating through 26 can be increased.

  Next, the operation when the washing water flows from the four circulation flow path members 26, 27, 28, 29 described above into the washing and dewatering tub 3 will be described with reference to FIG. FIG. 13 is a diagram schematically showing shower shapes from four circulation flow path members.

  First, the laundry 12 is put into the washing / dehydrating tub 3, the power switch 13 is turned on, and a start switch (not shown) provided in the input switch unit 14 is turned on. The water supply valve 16 is controlled to supply water to a predetermined water level, and the washing process is started. When entering the washing process, the driving motor 22 is rotated by being controlled by the control unit 7 in the right rotation / pause / left rotation / pause according to the washing water flow. The controlled rotation of the drive motor 22 is transmitted to the stirring blade 2 via the speed reduction mechanism 24. Accordingly, the stirring blade 2 and the back blade 2s of the stirring blade 2 rotate according to the rotation of the driving motor 22, the laundry 12 and the washing water in the washing and dewatering tub 3 are stirred, and the laundry 12 is washed. The

  On the other hand, the washing water between the back blade 2s of the stirring blade 2 and the circulation flow path member 26 (27, 28, 29) is pushed outward by centrifugal force by the rotation of the back blade 2s according to the rotation of the stirring blade 2. Then, the water is poured intermittently into the washing and dewatering tub 3 from the opening 26a (27a, 28a, 29a) or the lint filter (not shown) provided in the circulating water channel 26d through the circulating water channel 26d. When the washing water is pushed out to the circulation channel 26d by the back blade 2s of the stirring blade 2, a new washing is then performed from the water inlet 33a1 leading to the outer tub 6 provided in the bottom plate 33 below the back blade 2s of the stirring blade 2. Water is supplied. That is, the washing water between the outer tub 6 and the washing / dehydrating tub 3 is supplied, and the washing water is circulated on the liquid surface between the outer tub 6 and the washing / dehydrating tub 3. At the moment of being discharged from (27, 28, 29), the water level of the washing water in the washing and dewatering tub 3 is temporarily lowered. However, since the washing water flows into the outer tub 6 from the dewatering hole 31a of the washing and dewatering tub 3 and the gap between the washing and dewatering tub 3 and the stirring blade 2, the difference in liquid level is balanced at a certain value and constant. It becomes.

  As described above, the washing water is discharged from the washing and dewatering tub 3 through the back blade 2 s of the stirring blade 2 and the circulating water channel 26 d through the opening 26 a provided in the circulating water channel 26 d and the like. Since the detergent solution can be sufficiently permeated into the laundry 12, the washing effect can be greatly enhanced.

  In the present embodiment, the opening 28 a of the circulation channel member 28 and the opening 29 a of the circulation channel member 29 are connected to the opening 26 a of the circulation channel member 26 and the opening 27 a of the circulation channel member 27. On the other hand, it is provided at a position 70 mm lower. For this reason, as shown in FIG. 13, the shower liquid S3 discharged from the opening 28a and the shower liquid S4 discharged from the opening 29a are the shower liquid S1 discharged from the opening 26a and the shower liquid S2 discharged from the opening 27a. It is exhaled to sink under. For this reason, even if the momentum of the shower sprayed from the openings 26a, 27a, 28a, 29a of the circulation flow path members 26, 27, 28, 29 is strong, the washing water is prevented from colliding and jumping up. it can. And since each shower liquid S1, S2, S3, S4 discharges toward the downward direction of the watering locus | trajectory of any other shower liquid S1 (S2, S3, S4), even if it increases a watering point, it is washing water Can be prevented from colliding and jumping. Therefore, it is possible to increase the water circulation point by increasing the circulation path, and to apply a strong water flow to many laundry items 12, thereby improving the cleaning power and the washing unevenness.

  As described above, in the washing machine 1 of the present embodiment, the guide path 34d formed in the pedestal portion 34 includes the first guide path 34d1 positioned within the width of the lower support portion 26i and the first guide path 34d1. A second guide path 34d2 extending outward from the end 26s of the circulation flow path member 26 in the circumferential direction. According to this, since the opening (inlet) of the guide path 34d formed in the peripheral wall surface 34c can be secured wider than the width of the circulation flow path member 26, it is pushed outward by the back blade 2s of the stirring blade 2. It becomes easy to take in the washing water into the guide path 34d, and the circulation amount of the washing water discharged from the opening 26a of the circulation flow path member 26 can be increased. By increasing the circulation amount of the wash water, the spray amount of the wash water sprayed on the laundry 12 increases, so that it is possible to improve the cleaning power while maintaining water saving.

  In the present embodiment, the length L2 of the second guide path 34d2 (the length from the boundary between the first guide path 34d1 and the second guide path 34d2 to the end 34d3 of the peripheral wall surface 34c) is the depth of the guide path 34d. It is formed longer than the length L1 in the direction (radial direction) (see FIG. 12). By setting in this way, the frontage of the guide path 34d can be widened, and the circulation flow rate of the washing water can be easily increased.

  In the present embodiment, the pedestal portion 34 is provided with a bridging portion 34f that spans the guide path 34d in the circumferential direction, and the lower support portion 26i of the circulation flow path member 26 is locked to the bridging portion 34f. As a result, even if the pedestal portion 34 located in the lower support portion 26i of the circulation flow path member 26 is cut out and the area for supporting the lower support portion 26i is reduced, the lower support portion 26i of the circulation flow path member 26 becomes the pedestal. It is possible to prevent floating from the portion 34. Moreover, since the bridging portion 34f is positioned at the upper portion of the guide path 34d and does not hinder the length of the wash water, the intake of the wash water into the guide path 34d is not impaired.

FIG. 14 is a cross-sectional view showing a bottom plate of a washing machine according to another embodiment. In the embodiment shown in FIG. 14, the second guide path 34g2 corresponding to the second guide path 34d2 is also provided for the circulation flow path members 28 and 29 including the filter members 28b and 29b.
As shown in FIG. 14, the guide path 34g has the same shape as the guide path 34d, and the length L2 of the second guide path 34g2 is longer than the length L1 in the depth direction. Further, the angle θ of the second guide path 34d2 with respect to the radial direction is preferably set to 20 degrees or more.

  Thus, by providing the guide passage 34g provided with the second guide passage 34g2 in the circulation passage members 28 and 29, the amount of washing water introduced into the circulation passage members 28 and 29 is increased, and the cleaning power is improved. As well as the ability to collect lint.

  In addition, this invention is not limited to above-described embodiment, In the range which does not deviate from the meaning of this invention, it can change variously. In the above-described embodiment, the configuration in which the four circulation flow path members 26, 27, 28, and 29 are provided to spray water from the corresponding four openings 26a, 27a, 28a, and 29a has been described. A configuration in which one circulation channel member is provided and water is sprayed from the corresponding three openings, or a configuration in which five or more circulation path members are provided and water is sprayed from the corresponding five or more openings may be used.

  In the present embodiment, the case where the second guide path 34d2 is formed in a linear shape (planar shape) has been described as an example. However, even if the second guide path 34d2 is formed in a curved shape (for example, a concave shape). Good.

1 Washing machine 2 Stirring blade 2s Back blade (blade part)
3 Washing and dewatering tank 6 Outer tank 16 Electromagnetic water supply valve (water supply means)
22 Driving motor (driving means)
26, 27, 28, 29 Circulating flow path member 26a, 27a, 28a, 29a Opening part 28b, 29b Filter member 26i Lower support part 26s End part 34 Base part 34c Peripheral wall surface 34d Guide path 34d1 First guide path 34d2 Second guide Road 34d3 End 34f Bridge part L1 Length in the depth direction L2 Length of the second guide path

Claims (4)

An outer tank,
A washing and dewatering tub rotatably accommodated in the outer tub;
A stirring blade rotatably supported on the inner bottom of the washing and dewatering tank;
A blade portion provided on the lower surface of the stirring blade;
Drive means for rotationally driving the stirring blade and the washing and dewatering tank;
Water supply means for supplying water into the outer tub;
Washing water circulation means for raising the washing water at the inner bottom of the washing and dehydrating tub by allowing the blades to rotate and flowing into the washing and dehydrating tub,
In a washing machine equipped with
The washing water circulation means includes a pedestal portion provided so as to surround the outer periphery of the stirring blade, and a circulation flow path member disposed along the axial direction on the inner wall surface of the washing and dewatering tank,
The pedestal portion includes a circumferential wall surface formed along a circumferential direction of the washing and dewatering tub, a guide path for guiding the washing water from the circumferential wall surface toward the circulation channel member, and the guide path with the guide path. And a bridging portion that runs around in the circumferential direction ,
The circulation flow path member includes a lower support part that is positioned above the guide path and supported by the pedestal part, and a locking protrusion that protrudes downward from the lower support part ,
The guide path includes a first guide path provided within a width of the lower support part, and a periphery of the lower support part of the circulation flow path member so as to intersect the lower part of the lower support part from the first guide path. A second guide path extending toward the peripheral wall surface on the outer side in the circumferential direction than the direction end ,
The washing machine , wherein the lower support portion is locked by inserting the locking protrusion into a locking hole formed through the bridging portion in the vertical direction .   The washing machine according to claim 1, wherein a length of the second guide path is longer than a length of the guide path in a radial direction. The washing machine according to claim 1 or 2 , wherein the circulation channel member includes a filter member.   The circulation channel member is provided at different positions in the circumferential direction by 90 ° around the rotation axis of the washing and dewatering tub, and a first opening for sprinkling water on the upper part of the one opposing circulation channel member A second opening formed lower than the first opening is formed at substantially the same height above the other opposing circulation flow path member, The washing machine according to any one of claims 1 to 3, wherein the guide path is formed in a circulation channel member facing each other.

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