WO2015141209A1 - Washing machine - Google Patents

Washing machine Download PDF

Info

Publication number
WO2015141209A1
WO2015141209A1 PCT/JP2015/001437 JP2015001437W WO2015141209A1 WO 2015141209 A1 WO2015141209 A1 WO 2015141209A1 JP 2015001437 W JP2015001437 W JP 2015001437W WO 2015141209 A1 WO2015141209 A1 WO 2015141209A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
laundry
stirring blade
washing machine
stirring
Prior art date
Application number
PCT/JP2015/001437
Other languages
French (fr)
Japanese (ja)
Inventor
有亮 前田
満成 藤井
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN201580013563.7A priority Critical patent/CN106103827B/en
Priority to JP2016508533A priority patent/JP6298993B2/en
Publication of WO2015141209A1 publication Critical patent/WO2015141209A1/en

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/12—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a vertical axis
    • D06F37/14—Ribs or rubbing means forming part of the receptacle

Definitions

  • the present invention relates to a washing machine in which a washing tub is rotatably arranged in a washing machine, and washing clothes in the washing tub are washed.
  • the washing machine gives a washing effect to the laundry by the following synergistic effect. Specifically, there are an effect of the water flow generated by the rotation operation of the stirring blade and an effect of directly moving the laundry by the raised blades provided on the stirring blade. In other words, the above actions and effects are caused by temporary deformation of the shape of the laundry, friction due to contact between the laundry, friction due to contact between the laundry and the side wall of the inner tub, and separation of dirt from the laundry. It aims to.
  • the laundry is stirred with a smaller turning radius at the center of rotation and with a larger turning radius near the outer periphery of the stirring blade. Therefore, depending on the position of the laundry, the washing effect varies (washing unevenness) even in the laundry in the same washing tub. Therefore, in the conventional washing machine, a complicated water flow is generated by the stirring blade by devising the shape of the base constituting the stirring blade and the shape of the raised blade provided on the base. Thereby, the opportunity for the position of the laundry to move in the washing water to be changed is increased, and the variation in the cleaning performance is reduced.
  • the above washing machine has less washing water at the time of washing with respect to the capacity of the laundry. Therefore, the buoyancy from which the laundry is obtained is reduced in the washing water, and it is easy to sink. At this time, since the sinked laundry is deformed along the uneven shape of the stirring blade to some extent, the weight of the laundry is likely to be applied to the upper surface of the stirring blade. In the case of the above state, the contribution of the effect of being moved by direct contact with the blades of the stirring blades is greater than the effect of the water flow. For this reason, in the configuration of the stirring blade of the conventional washing machine, there is less opportunity for the positions of the laundry items to be switched, particularly when the amount of washing water is small. As a result, there has been a problem that unevenness in washing is likely to occur.
  • the present invention provides a washing machine that is less likely to cause uneven washing even when the amount of washing water used is small relative to the capacity of the laundry.
  • the washing machine of the present invention has an inner tub that opens upward and accommodates laundry and washing water, and an agitating blade that is disposed on the inner bottom of the inner tub and is rotationally driven by the rotation drive unit. Furthermore, the stirring blades are formed so as to protrude upward from the base of the stirring blade toward the outer periphery from the rotation center, and are formed to protrude upward from the base of the stirring blade toward the rotation center from the outer periphery.
  • a peripheral wing is disposed at different positions in the circumferential direction of the stirring blade.
  • FIG. 1 is a plan view showing a configuration of a stirring blade of a washing machine according to an embodiment of the present invention.
  • 2 is a cross-sectional view of the stirring blade of FIG. 1 taken along line 2-2.
  • FIG. 3 is a perspective view of a stirring blade of the washing machine according to the embodiment.
  • FIG. 4 is a diagram for explaining the movement of the laundry by the rotational driving of the stirring blade in the washing step of the washing machine according to the embodiment.
  • FIG. 5 is a diagram for explaining the movement of the laundry by the rotational drive of the stirring blades in the washing step of the washing machine according to the embodiment.
  • FIG. 6 is a diagram for explaining the movement of the laundry by the rotational driving of the stirring blade in the washing step of the washing machine according to the embodiment.
  • FIG. 7 is a cross-sectional view of the washing machine according to the embodiment.
  • washing machine of the present embodiment will be described by taking as an example the configuration of a fully automatic washing machine that performs from washing to dehydration in a fully automatic manner.
  • FIG. 7 is a cross-sectional view of the washing machine according to the embodiment of the present invention.
  • the washing machine of the present embodiment includes at least a housing 1, an outer tub 3 housed in the housing 1, an inner tub 4, a motor 10, a control unit 11, and the like. ing.
  • the outer tub 3 is disposed inside the housing 1 and is elastically supported by the housing 1 by a plurality of suspensions 2. Thereby, the vibration of the outer tub 3 generated during dehydration is absorbed by the suspension 2, and transmission of noise and vibration to the outside is reduced.
  • the inner tank 4 is disposed in the outer tank 3, and a stirring blade 7 is disposed on the inner bottom of the inner tank 4.
  • the motor 10 is attached to the bottom of the outer tub 3 and is connected to the inner tub 4 and the stirring blade 7 via the clutch 23. Then, by switching the rotation of the motor 10 with the clutch 23, the inner tub 4 and the stirring blade 7 are individually driven to rotate. At this time, the output of the motor 10 is transmitted to the drive shaft 8 of the inner tub 4 via the speed reduction mechanism 9 and rotationally drives the inner tub 4.
  • a balancer 6 is disposed on the upper part of the inner tank 4, and the balancer 6 suppresses vibration of the inner tank 4 that occurs when the inner tank 4 is rotated.
  • the washing machine of the present embodiment is configured.
  • the user opens the lid 16 provided on the upper surface of the housing 1, puts the laundry 25 and detergent into the inner tub 4, and starts the operation of the washing machine.
  • the control unit 11 opens the water supply valve 15 to supply water into the inner tank 4 and rotationally drives the stirring blade 7 via the motor 10.
  • the washing step is performed by agitation caused by contact between the water flow caused by the rotation of the agitation blade 7 and the laundry 25.
  • control unit 11 drains dirty and washed water in the inner tub 4 through the drain hose 22. And if drainage is completed, a rinse step will be implemented.
  • the control unit 11 opens the water supply valve 15 and newly supplies water into the inner tank 4. Furthermore, the control unit 11 stirs the supplied water and the laundry 25 with the stirring blade 7 to rinse the laundry 25. And when a rinse step is complete
  • the control unit 11 switches the rotation of the motor 10 to the inner tank 4 by the clutch 23 and transmits the rotation to drive the inner tank 4. And by the rotational drive of the inner tank 4, the washing water contained in the to-be-washed object 25 is dehydrated by centrifugal force, and is discharged in the outer tank 3 from the small hole 5 formed in the peripheral surface of the inner tank 4. Thereby, a series of steps from the washing step to the dehydration step is completed. The series of steps is controlled by the control unit 11 and is executed fully automatically in the case of the fully automatic washing machine of the present embodiment.
  • the water flow by the stirring blade 7 and the stirring of the laundry 25 in the washing step are requirements that affect the washing performance such as washing unevenness.
  • the stirring blade 7 has a laundry near the center of rotation and a laundry near the outer periphery in a state where the amount of washing water is small relative to the volume of the laundry. It is configured to increase the opportunity for replacement with things. As a result, washing unevenness is reduced. Furthermore, since a washing operation can be performed with a small amount of water, effects such as water saving can be improved.
  • the stirring blade 7 of the present embodiment includes at least a base 26, a central blade 27 provided on the base 26, an outer peripheral blade 28, and the like.
  • substrate 26 is comprised by the substantially circular shape (a circle is included), and is formed in the inclined curved surface which inclines upwards toward the horizontal or the outer periphery 7b. Furthermore, a large number of small holes 29 are formed in the base 26. Thereby, the washing water in the inner tub can be efficiently drained through the small holes 29. In addition, washing water can be convected through the small holes 29 during stirring by the base 26. As a result, washing efficiency and the like can be improved.
  • the center wings 27 are provided, for example, radially on the base 26 from the rotation center 7a toward the outer periphery 7b.
  • the outer peripheral blades 28 are provided on the base 26 in, for example, a reverse radial shape from the outer periphery 7b of the stirring blade 7 toward the rotation center 7a.
  • the outer wing 28 is disposed with respect to the central wing 27, or the central wing 27 is disposed with respect to the outer wing 28 at a position displaced by 60 degrees with respect to the rotation center 7 a of the stirring blade 7.
  • the central blade 27 of the stirring blade 7 bulges upward from the base 26 continuously from the rotation center 7a of the stirring blade 7 toward the outer periphery 7b, for example, to a position of about 1/2 of the radius of the stirring blade 7. It is provided in the shape of a feather.
  • the outer peripheral blade 28 has a blade shape that protrudes upward from the base 26 continuously from the outer periphery 7b of the stirring blade 7 toward the rotation center 7a, for example, to the position of about 1/2 of the radius of the stirring blade 7. Is provided.
  • the center blade 27 includes a screw fastening portion 26 a provided at the rotation center 7 a of the stirring blade 7, and radially surrounds the rotation center 7 a of the stirring blade 7. It extends in the 7b direction. Further, the center blade 27 is formed so as to be gently inclined downward toward the base 26 from the rotation center 7a of the stirring blade 7 toward the outer periphery 7b. Further, the central blade 27 is formed in a shape in which the width with respect to the rotation direction (circumferential direction) becomes narrower from the rotation center 7a of the stirring blade 7 toward the outer periphery 7b.
  • the central wing 27 formed as described above has a blade side surface 27a that constitutes one side surface, a blade upper surface 27b that constitutes an upper surface, and a blade side surface 27c that constitutes the other side surface.
  • the blade upper surface 27b of the central wing 27 is a surface on which the laundry is placed. And as above-mentioned, the blade
  • the blade side surface 27a and the blade side surface 27c of the central blade 27 are formed in a shape that rapidly descends and slopes in the circumferential direction of the stirring blade 7 from the outer peripheral end of the blade upper surface 27b.
  • the central blade 27 has a circumferential width W1 of the blade upper surface 27b at the base point on the rotation center 7a side of the stirring blade 7 and is approximately 1/20 of the length of the rotation locus of the tip 27d of the central blade 27. It is set above. Note that the above settings are obtained from various examination results.
  • the outer peripheral blade 28 of the stirring blade 7 is formed to extend from the outer periphery 7b of the stirring blade 7 toward the rotation center 7a. Further, the outer peripheral blade 28 is the highest on the outer periphery 7b side of the stirring blade 7, and is formed so as to be gently inclined downward toward the base 26 from the outer periphery 7b of the stirring blade 7 toward the rotation center 7a. Furthermore, the outer peripheral blade 28 is formed in a shape in which the width with respect to the rotation direction becomes narrower from the outer periphery 7b of the stirring blade 7 toward the rotation center 7a.
  • the outer peripheral blade 28 formed as described above has a blade side surface 28a constituting one side surface, a blade upper surface 28b constituting an upper surface, and a blade side surface 28c constituting the other side surface.
  • the blade upper surface 28b of the outer peripheral wing 28 is a surface on which the laundry is placed. Then, as described above, the blade upper surface 28b is formed to have a shape that gradually falls and becomes narrower as it goes from the outer periphery 7b of the stirring blade 7 toward the rotation center 7a. Further, the blade upper surface 28b is the highest in the central portion 28bb with respect to the circumferential direction of the stirring blade 7, and is gently inclined from the central portion 28bb to both sides in the circumferential direction (blade side surface 28a and blade side surface 28c side). It is formed with.
  • the blade side surface 28a and the blade side surface 28c of the outer peripheral blade 28 are formed in a shape that rapidly descends and slopes in the circumferential direction of the stirring blade 7 from the outer peripheral end of the blade upper surface 28b.
  • the circumferential width W2 of the blade upper surface 28b of the outer periphery 7b of the stirring blade 7 serving as a base point is set to about 1/20 or more of the outer peripheral length of the outer peripheral blade 28. Note that the above settings are obtained from various examination results.
  • the stirring blade 7 is configured in the washing machine of the present embodiment.
  • the to-be-washed laundry 25 has a shape deformed to some extent along the uneven shape of the stirring blade 7 in the vicinity of the stirring blade 7.
  • the laundry 25 is placed on the blade upper surface 27b of the central blade 27 and the blade upper surface 28b of the outer peripheral blade 28 rather than the base 26 of the stirring blade 7.
  • the central blade 27 has a strong force to move the laundry 25 in the order of the blade side surface 27a, the blade upper surface 27b, and the blade side surface 27c. Works. Therefore, the center wing 27 can easily move the laundry 25 in the above order.
  • the laundry near the upper surface 27b of the blade is in direct contact with the upper surface 27b of the blade because the buoyancy obtained from the washing water is small when there is little washing water in the inner tub 4. Therefore, the laundry 25 in the vicinity of the blade upper surface 27 b is given a rotational force by the frictional force with the blade upper surface 27 b by the rotational drive of the stirring blade 7.
  • the blade side surface 27a directly applies a rotational force to the laundry 25 near the rotation direction by the stirring action of the blade side surface 27a by the rotation of the stirring blade 7. Therefore, the stirring action on the laundry 25 is greater on the blade side surface 27a than on the blade upper surface 27b.
  • the laundry in the vicinity of the blade side surface 27c only has an effect of moving when it comes into contact with the laundry moved by the blade upper surface 27b and the blade side surface 27c. Therefore, the stirring action of the blade side surface 27c on the laundry is smaller than that of the blade side surface 27a and the blade upper surface 27b.
  • the outer peripheral blade 28 is a force that moves the laundry 25 in the order of the blade side surface 28a, the blade upper surface 28b, and the blade side surface 28c shown in FIG. works strongly. Therefore, the outer peripheral wing 28 can easily move the laundry 25 in the above order.
  • the laundry near the upper surface 28b of the blade has a small buoyancy obtained from the washing water when the amount of the washing water at the time of washing with respect to the capacity of the laundry 25 is small.
  • the laundry near the blade upper surface 28b is in direct contact with the blade upper surface 28b. Therefore, the laundry 25 in the vicinity of the blade upper surface 28b is given a rotational force by the frictional force with the blade upper surface 28b by the rotational drive of the stirring blade 7.
  • the blade side surface 28a directly applies a rotational force to the laundry 25 near the rotation direction by the stirring action of the blade side surface 28a due to the rotation of the stirring blade 7. Therefore, the stirring action on the laundry is greater on the blade side surface 28a than on the blade upper surface 28b.
  • the laundry to be washed in the vicinity of the blade side surface 28c only has an effect of moving by coming into contact with the laundry to be moved by the blade upper surface 28b and the blade side surface 28a. Therefore, the stirring action of the blade side surface 28c on the laundry is smaller than that of the blade side surface 28a and the blade upper surface 28b.
  • the laundry in the washing water located higher than the vicinity of the bottom surface (stirring blade 7) of the inner tub 4 is intertwined with the laundry near the bottom surface (stirring blade 7) as the inner tub 4 rotates.
  • the laundry is in contact with each other. That is, when the laundry near the stirring blade 7 moves, the laundry at a high position moves following the movement of the laundry near the bottom surface. Thereby, the same movement as the above-described movement of the laundry is generated.
  • the position of the laundry becomes closer to the water surface (the surface of the washing water (atmosphere side)
  • the influence of the movement of the laundry near the bottom surface (stirring blade) becomes smaller, so the movement of the laundry near the water surface Becomes smaller.
  • the stirring action by the central blade 27 and the stirring action by the outer peripheral blade 28 act simultaneously on the laundry to stir the laundry. Thereby, the laundry can be washed effectively.
  • FIG. 4 to FIG. 6 are diagrams for explaining the movement of the laundry by the rotational driving of the stirring blade in the washing step of the washing machine according to the embodiment. 4 to 6 show an example in which the stirring blade 7 rotates in the clockwise direction.
  • FIG. 4 shows the position of the laundry in a state before stirring by the stirring blade 7.
  • FIG. 5 shows the position of the laundry immediately after the start of the clockwise rotation operation.
  • FIG. 6 shows the position of the laundry in the state where the stirring blade 7 is further rotated clockwise from the state of FIG.
  • the laundry 25 b is positioned on the rotational direction side toward which the blade side surface 27 a of the central blade 27 is directed.
  • the laundry items 25e and 25h are located on the rotational direction side toward which the blade side surface 28a of the outer peripheral wing 28 is directed. Therefore, the force in the rotational direction of the stirring blade 7 is most likely to act on the laundry items 25b, 25e, and 25h, and as a result, the amount of movement increases.
  • the stirring blade 7 rotates clockwise, the laundry items 25b, 25e, and 25h move from the state shown in FIG. 4 in the directions indicated by arrows B, E, and H in FIG.
  • the arrow B indicates the amount and direction of movement of the laundry 25b.
  • An arrow E indicates the moving amount and moving direction of the laundry 25e.
  • an arrow H indicates the movement amount and movement direction of the laundry 25h.
  • the laundry 25c shown in FIG. 4 is located near the blade upper surface 27b of the central wing 27, and the laundry 25f is located near the outer blade 28 blade upper surface 28b. Therefore, the laundry items 25c and 25f move due to frictional force caused by the contact between the blade upper surface 27b of the central wing 27 and the blade upper surface 28b of the outer peripheral wing 28. In other words, the laundry items 25c and 25f move from the state shown in FIG. 4 in the directions indicated by arrows C and F in FIG. At this time, the arrow C indicates the movement amount and movement direction of the laundry 25c, and the arrow F indicates the movement amount and movement direction of the laundry 25f.
  • the laundry items 25a, 25d, and 25g shown in FIG. 4 are pushed by the laundry item having a large amount of movement, for example, the laundry item 25b, so that, for example, the arrows A and D in FIG. , Move in the direction indicated by G.
  • the arrow A indicates the moving amount and moving direction of the laundry 25a.
  • An arrow D indicates the moving amount and moving direction of the laundry 25d.
  • an arrow G indicates the movement amount and movement direction of the laundry 25g.
  • the length of the arrow shown in FIG. 5 relatively represents the magnitude of the amount of movement of each laundry item. That is, the magnitude of the amount of movement of the laundry is in the relationship of arrows B, E, H> arrow C, F> arrows A, D, G.
  • the laundry 25b whose movement in the circumferential direction is restricted by the laundry 25a moves in the direction of the empty space as indicated by the arrow I in FIG.
  • the laundry 25b moves from the vicinity of the central wing 27 to the vicinity of the outer wing 28.
  • the opportunity for the positions of the laundry near the outer periphery of the stirring blade 7 and the laundry near the inner periphery to be increased increases. Thereby, washing unevenness of the laundry can be reduced. Furthermore, since water can be washed with less washing water, the water saving effect is also improved.
  • the washing machine of the present embodiment it is difficult for the laundry to obtain buoyancy, particularly in the washing step in which washing is performed by reducing the amount of washing water used relative to the capacity of the laundry.
  • the stirring blade is rotationally driven, the contact area between the central blade and the outer peripheral blade of the stirring blade and the laundry is increased, and a large frictional force acts on the laundry. As a result, the laundry is more easily stirred than the conventional washing machine.
  • the central blade and the outer peripheral blade of the stirring blade are provided at different positions in the circumferential direction with respect to the rotation center. Therefore, the portion (position) that most acts on the laundry is divided by the difference in angle between the central wing and the outer wing.
  • the laundry that has started to move due to direct contact with the central wing moves to the space where there was the laundry that has started to move due to direct contact with the outer peripheral wing.
  • the laundry that has started to move due to direct contact with the outer peripheral wing moves to the space where there was the laundry that has started to move due to direct contact with the central wing.
  • the positions of the laundry near the center of the inner tub and the laundry near the outer periphery can be easily interchanged.
  • the washing step can be executed with less washing water, so that it is possible to simultaneously improve the water-saving effect and reduce washing unevenness.
  • the central blade and the outer peripheral blade of the stirring blade are alternately provided in the rotation direction.
  • produces in the part which acts most with respect to the laundry to be rotationally driven, and the part with a small effect
  • the central blade and the outer peripheral blade of the stirring blade are provided at equal intervals in the rotation direction. As a result, a deviation occurs between the portion that acts most greatly on the laundry to be rotated and the portion that acts less. Therefore, the replacement of the position of the laundry due to the shift occurs more uniformly in the entire stirring blade. As a result, washing unevenness of the laundry can be more effectively suppressed.
  • the radial lengths of the center blade and the outer wing are set so that the rotation locus of the tip of the central wing of the stirring wing is larger in diameter than the rotation locus of the tip of the outer wing. Set. Accordingly, it is possible to eliminate as much as possible the laundry to which the force in the rotational direction of the stirring blade does not act. Therefore, the change of the position of the laundry can be uniformly generated in the entire stirring blade. As a result, washing unevenness of the laundry can be reduced more effectively.
  • the central blade of the stirring blade has the blade upper surface and the blade side surfaces formed on both sides of the blade upper surface, and the width of the blade upper surface on the rotation center side of the center blade is It is set to be set to about 1/20 or more of the length of the rotation locus of the tip of the wing.
  • the outer peripheral blade of the stirring blade has the upper surface of the blade and the blade side surfaces formed on both sides of the upper surface of the blade. It is set to be set to about 1/20 or more of the length of the outer periphery.
  • the radial length of the central blade of the stirring blade is set to about 1 ⁇ 2 of the radius of the stirring blade.
  • the radial length of the outer peripheral blade is set to 1 ⁇ 2 of the radius of the stirring blade.
  • the upper surface of the central blade is provided so as to be inclined downward so as to approach the base of the stirring blade as it goes in the outer circumferential direction of the stirring blade.
  • the upper surface of the blade of the central blade is provided so as to be inclined downward so as to approach the base of the stirring blade toward the blade side surface provided on both sides in the circumferential direction of the stirring blade.
  • the upper surface of the central blade is provided so that the width in the circumferential direction becomes narrower toward the outer peripheral direction of the stirring blade.
  • the upper surface of the outer peripheral blade is provided so as to be inclined downward so as to approach the base of the stirring blade toward the rotation center direction of the stirring blade.
  • the upper surface of the outer peripheral blade is provided so as to be inclined downward so as to approach the base of the stirring blade toward the blade side surfaces provided on both sides in the circumferential direction of the stirring blade.
  • the upper surface of the outer peripheral blade is provided so that the width in the circumferential direction becomes narrower toward the rotation center direction of the stirring blade.
  • the present invention can be widely used in fields such as washing machines such as washing machines that require reduction in washing unevenness even when the amount of water used is small relative to the capacity of the laundry.

Abstract

This washing machine has an inner tank which opens upward and accommodates wash water and the items to be washed, and an agitator (7) which is arranged at the bottom inside of the inner tank and which is driven to rotate by a rotation driving unit. Further, the agitator (7) is provided with central vanes (27) which rise upwards from the base (26) of the agitator (7) from the rotation center (7a) towards the outer periphery (7b), and peripheral vanes (28) which are formed rising upwards from the base (26) of the agitator (7) from the outer periphery (7b) towards the rotation center (7a). Further, the central vanes (27) and the peripheral vanes (28) are arranged in different positions in the circumferential direction of the agitator (7). Thereby, a washing machine is achieved which, even when using less wash water relative to the volume of items to be washed, is not prone to result in uneven washing.

Description

洗濯機Washing machine
　本発明は、洗濯機に洗濯槽を回転自在に配設し、洗濯槽内の洗濯衣類を洗濯する洗濯機に関する。 The present invention relates to a washing machine in which a washing tub is rotatably arranged in a washing machine, and washing clothes in the washing tub are washed.
　従来、洗濯槽の底部に攪拌翼を回転自在に配設し、攪拌翼が生成する水流により被洗濯物を洗濯する洗濯機が知られている（例えば、特許文献１参照）。 Conventionally, there has been known a washing machine in which a stirring blade is rotatably disposed at the bottom of a washing tub and a laundry is washed by a water flow generated by the stirring blade (see, for example, Patent Document 1).
　上記洗濯機は、以下に示す相乗効果により、被洗濯物に洗浄効果を与えている。具体的には、攪拌翼の回転動作によって生じる水流の効果と、攪拌翼に設けられた隆起状の羽根が被洗濯物を直接動かす効果である。つまり、上記作用・効果は、被洗濯物の形状の一時的な変形と、被洗濯物同士の接触による摩擦、被洗濯物と内槽の側壁との接触による摩擦によって汚れを被洗濯物から引き離すことを狙いとしている。 The washing machine gives a washing effect to the laundry by the following synergistic effect. Specifically, there are an effect of the water flow generated by the rotation operation of the stirring blade and an effect of directly moving the laundry by the raised blades provided on the stirring blade. In other words, the above actions and effects are caused by temporary deformation of the shape of the laundry, friction due to contact between the laundry, friction due to contact between the laundry and the side wall of the inner tub, and separation of dirt from the laundry. It aims to.
　しかし、通常、攪拌翼の回転動作中において、被洗濯物は、回転中心にあるほど小さい回転半径で、攪拌翼の外周付近にあるほど大きい回転半径で攪拌される。そのため、被洗濯物の配置位置により、同じ洗濯槽内の被洗濯物でも洗浄効果にばらつき（洗いムラ）が生じる。そこで、従来の洗濯機は、攪拌翼を構成する基盤や、基盤に設けられる隆起状の羽根の形状を工夫して、攪拌翼で複雑な水流を発生させている。これにより、洗濯水中を移動する被洗濯物の位置が入れ替わる機会を増やし、洗浄性能のばらつきを低減している。 However, normally, during the rotating operation of the stirring blade, the laundry is stirred with a smaller turning radius at the center of rotation and with a larger turning radius near the outer periphery of the stirring blade. Therefore, depending on the position of the laundry, the washing effect varies (washing unevenness) even in the laundry in the same washing tub. Therefore, in the conventional washing machine, a complicated water flow is generated by the stirring blade by devising the shape of the base constituting the stirring blade and the shape of the raised blade provided on the base. Thereby, the opportunity for the position of the laundry to move in the washing water to be changed is increased, and the variation in the cleaning performance is reduced.
　近年、洗濯容量の大容量化が進む一方で、節水意識の高まりにより、洗濯水としての使用水量をできる限り少なく設定した洗濯機が開発されている。 In recent years, while the washing capacity has been increased, a washing machine in which the amount of water used as washing water is set as small as possible has been developed due to an increase in water saving awareness.
　上記の洗濯機は、被洗濯物の容量に対して洗い時の洗濯水の水量が少ない。そのため、洗濯水中において、被洗濯物が得られる浮力が少なくなり、沈み込みやすい。このとき、沈み込んだ被洗濯物は、攪拌翼の凹凸形状にある程度沿って変形するため、攪拌翼の上面に被洗濯物の重量がかかりやすい状態になる。上記の状態の場合、被洗濯物は、水流の効果よりも、攪拌翼の羽根との直接接触による動かされる効果の寄与度が大きくなる。そのため、従来の洗濯機の攪拌翼の構成では、特に洗濯水の水量が少ない場合、被洗濯物同士の位置の入れ替わる機会が少なくなる。その結果、被洗濯物の洗いムラが生じやすいと言う課題があった。 The above washing machine has less washing water at the time of washing with respect to the capacity of the laundry. Therefore, the buoyancy from which the laundry is obtained is reduced in the washing water, and it is easy to sink. At this time, since the sinked laundry is deformed along the uneven shape of the stirring blade to some extent, the weight of the laundry is likely to be applied to the upper surface of the stirring blade. In the case of the above state, the contribution of the effect of being moved by direct contact with the blades of the stirring blades is greater than the effect of the water flow. For this reason, in the configuration of the stirring blade of the conventional washing machine, there is less opportunity for the positions of the laundry items to be switched, particularly when the amount of washing water is small. As a result, there has been a problem that unevenness in washing is likely to occur.
特開２００４－３２１６２９号公報JP 2004-321629 A
　本発明は、被洗濯物の容量に対して、洗濯水の使用水量が少ない場合でも、洗いムラが生じにくい洗濯機を提供する。 The present invention provides a washing machine that is less likely to cause uneven washing even when the amount of washing water used is small relative to the capacity of the laundry.
　つまり、本発明の洗濯機は、上方に開口して被洗濯物および洗濯水を収容する内槽と、内槽の内底部に配設され、回転駆動部によって回転駆動される攪拌翼を有する。さらに、攪拌翼は、回転中心から外周に向かって攪拌翼の基盤から上方に隆起して形成された中心翼と、外周から回転中心に向かって攪拌翼の基盤から上方に隆起して形成された外周翼とを備える。そして、中心翼と外周翼とは、攪拌翼の円周方向の異なる位置に配設される。 That is, the washing machine of the present invention has an inner tub that opens upward and accommodates laundry and washing water, and an agitating blade that is disposed on the inner bottom of the inner tub and is rotationally driven by the rotation drive unit. Furthermore, the stirring blades are formed so as to protrude upward from the base of the stirring blade toward the outer periphery from the rotation center, and are formed to protrude upward from the base of the stirring blade toward the rotation center from the outer periphery. A peripheral wing. The central blade and the outer blade are disposed at different positions in the circumferential direction of the stirring blade.
　これにより、被洗濯物の容量に対して、洗濯水の使用水量が少ない場合でも、攪拌翼の回転動作によって、被洗濯物同士の位置が入れ替わる機会を増加させることができる。その結果、被洗濯物の洗いムラの生じにくい洗濯機を実現できる。 Thus, even when the amount of washing water used is small relative to the capacity of the laundry, it is possible to increase the chance that the positions of the laundry are switched by the rotating operation of the stirring blades. As a result, it is possible to realize a washing machine that is less likely to cause uneven washing of the laundry.
図１は、本発明の実施の形態に係る洗濯機の攪拌翼の構成を示す平面図である。FIG. 1 is a plan view showing a configuration of a stirring blade of a washing machine according to an embodiment of the present invention. 図２は、図１の攪拌翼の２－２線矢視断面図である。2 is a cross-sectional view of the stirring blade of FIG. 1 taken along line 2-2. 図３は、同実施の形態に係る洗濯機の攪拌翼の斜視図である。FIG. 3 is a perspective view of a stirring blade of the washing machine according to the embodiment. 図４は、同実施の形態に係る洗濯機の洗いステップにおける攪拌翼の回転駆動による被洗濯物の動きを説明する図である。FIG. 4 is a diagram for explaining the movement of the laundry by the rotational driving of the stirring blade in the washing step of the washing machine according to the embodiment. 図５は、同実施の形態に係る洗濯機の洗いステップにおける攪拌翼の回転駆動による被洗濯物の動きを説明する図である。FIG. 5 is a diagram for explaining the movement of the laundry by the rotational drive of the stirring blades in the washing step of the washing machine according to the embodiment. 図６は、同実施の形態に係る洗濯機の洗いステップにおける攪拌翼の回転駆動による被洗濯物の動きを説明する図である。FIG. 6 is a diagram for explaining the movement of the laundry by the rotational driving of the stirring blade in the washing step of the washing machine according to the embodiment. 図７は、同実施の形態に係る洗濯機の断面図である。FIG. 7 is a cross-sectional view of the washing machine according to the embodiment.
　以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
　（実施の形態）
　以下に、本発明の実施の形態における洗濯機の概略構造について、図７を用いて説明する。なお、本実施の形態の洗濯機は、洗濯から脱水までを全自動で実施する全自動洗濯機の構成を例に、説明する。 (Embodiment)
Below, the schematic structure of the washing machine in embodiment of this invention is demonstrated using FIG. Note that the washing machine of the present embodiment will be described by taking as an example the configuration of a fully automatic washing machine that performs from washing to dehydration in a fully automatic manner.
　図７は、本発明の実施の形態に係る洗濯機の断面図である。 FIG. 7 is a cross-sectional view of the washing machine according to the embodiment of the present invention.
　図７に示すように、本実施の形態の洗濯機は、少なくとも筐体１と、筐体１内に収容される外槽３と、内槽４と、モータ１０と、制御部１１などを備えている。外槽３は、筐体１の内部に配設され、複数のサスペンション２によって筐体１に弾性支持されている。これにより、脱水時などで発生する外槽３の振動をサスペンション２によって吸収し、外部への騒音や振動の伝達を低減している。内槽４は外槽３内に配設され、内槽４の内底部には攪拌翼７が配設されている。 As shown in FIG. 7, the washing machine of the present embodiment includes at least a housing 1, an outer tub 3 housed in the housing 1, an inner tub 4, a motor 10, a control unit 11, and the like. ing. The outer tub 3 is disposed inside the housing 1 and is elastically supported by the housing 1 by a plurality of suspensions 2. Thereby, the vibration of the outer tub 3 generated during dehydration is absorbed by the suspension 2, and transmission of noise and vibration to the outside is reduced. The inner tank 4 is disposed in the outer tank 3, and a stirring blade 7 is disposed on the inner bottom of the inner tank 4.
　また、モータ１０は、外槽３の底部に取り付けられ、クラッチ２３を介して内槽４と攪拌翼７に連結されている。そして、モータ１０の回転をクラッチ２３で切り替えることにより、内槽４と攪拌翼７とが個別に回転駆動される。このとき、モータ１０の出力は、減速機構９を介して、内槽４の駆動軸８に伝達され、内槽４を回転駆動する。 The motor 10 is attached to the bottom of the outer tub 3 and is connected to the inner tub 4 and the stirring blade 7 via the clutch 23. Then, by switching the rotation of the motor 10 with the clutch 23, the inner tub 4 and the stirring blade 7 are individually driven to rotate. At this time, the output of the motor 10 is transmitted to the drive shaft 8 of the inner tub 4 via the speed reduction mechanism 9 and rotationally drives the inner tub 4.
　また、内槽４の上部にはバランサ６が配設され、バランサ６は内槽４を回転させた際に発生する内槽４の振動を抑制する。 Further, a balancer 6 is disposed on the upper part of the inner tank 4, and the balancer 6 suppresses vibration of the inner tank 4 that occurs when the inner tank 4 is rotated.
　以上のように、本実施の形態の洗濯機が構成されている。 As described above, the washing machine of the present embodiment is configured.
　以下に、本実施の形態の洗濯機の動作について、説明する。 The operation of the washing machine according to the present embodiment will be described below.
　まず、使用者は、筐体１の上面に設けられた蓋１６を開き、内槽４内に被洗濯物２５と洗剤などを投入して、洗濯機の運転を開始する。 First, the user opens the lid 16 provided on the upper surface of the housing 1, puts the laundry 25 and detergent into the inner tub 4, and starts the operation of the washing machine.
　運転を開始すると、制御部１１は、給水弁１５を開放して内槽４内に給水し、モータ１０を介して攪拌翼７を回転駆動する。これにより、攪拌翼７の回転による水流と被洗濯物２５との接触による攪拌により、洗いステップが実施される。 When the operation is started, the control unit 11 opens the water supply valve 15 to supply water into the inner tank 4 and rotationally drives the stirring blade 7 via the motor 10. Thus, the washing step is performed by agitation caused by contact between the water flow caused by the rotation of the agitation blade 7 and the laundry 25.
　つぎに、所定時間の洗いステップが完了すると、制御部１１は、内槽４内の汚れた洗濯後の水を排水ホース２２を介して排水する。そして、排水が完了すると、すすぎステップを実施する。 Next, when the washing step for a predetermined time is completed, the control unit 11 drains dirty and washed water in the inner tub 4 through the drain hose 22. And if drainage is completed, a rinse step will be implemented.
　すすぎステップでは、制御部１１は、給水弁１５を開放し、新たに内槽４内に給水する。さらに、制御部１１は、給水された水と被洗濯物２５とを攪拌翼７によって攪拌し、被洗濯物２５をすすぐ。そして、すすぎステップが終了すると、脱水ステップを実施する。 In the rinsing step, the control unit 11 opens the water supply valve 15 and newly supplies water into the inner tank 4. Furthermore, the control unit 11 stirs the supplied water and the laundry 25 with the stirring blade 7 to rinse the laundry 25. And when a rinse step is complete | finished, a dehydration step is implemented.
　脱水ステップでは、制御部１１は、モータ１０の回転をクラッチ２３により内槽４に切り換えて伝達し、内槽４を回転駆動する。そして、内槽４の回転駆動により、被洗濯物２５に含まれる洗濯水が、遠心力によって脱水され、内槽４の周面に形成された小孔５から外槽３内に排出される。これにより、洗いステップから脱水ステップに至る一連のステップが完了する。なお、上記一連のステップは、制御部１１によって制御され、本実施の形態の全自動洗濯機の場合、全自動で実行される。 In the dehydration step, the control unit 11 switches the rotation of the motor 10 to the inner tank 4 by the clutch 23 and transmits the rotation to drive the inner tank 4. And by the rotational drive of the inner tank 4, the washing water contained in the to-be-washed object 25 is dehydrated by centrifugal force, and is discharged in the outer tank 3 from the small hole 5 formed in the peripheral surface of the inner tank 4. Thereby, a series of steps from the washing step to the dehydration step is completed. The series of steps is controlled by the control unit 11 and is executed fully automatically in the case of the fully automatic washing machine of the present embodiment.
　つまり、本実施の形態では、洗いステップにおける攪拌翼７による水流と被洗濯物２５の攪拌が、洗いムラなどの洗浄性能を左右する要件となる。 That is, in the present embodiment, the water flow by the stirring blade 7 and the stirring of the laundry 25 in the washing step are requirements that affect the washing performance such as washing unevenness.
　そこで、本実施の形態に係る攪拌翼７は、以下に述べるように、被洗濯物の容量に対して、洗濯水の水量が少ない状態において、回転中心付近の被洗濯物と外周付近の被洗濯物との入れ替わる機会を増加させるように構成している。これにより、洗いムラの低減を図っている。さらに、少ない水量で洗濯動作が可能となるため、節水などの効果も向上することができる。 Therefore, as described below, the stirring blade 7 according to the present embodiment has a laundry near the center of rotation and a laundry near the outer periphery in a state where the amount of washing water is small relative to the volume of the laundry. It is configured to increase the opportunity for replacement with things. As a result, washing unevenness is reduced. Furthermore, since a washing operation can be performed with a small amount of water, effects such as water saving can be improved.
　以下に、本実施の形態に係る洗濯機の攪拌翼７の構成について、図１および図２を参照して、説明する。 Hereinafter, the configuration of the stirring blade 7 of the washing machine according to the present embodiment will be described with reference to FIGS. 1 and 2.
　本実施の形態の攪拌翼７は、図１および図２に示すように、少なくとも基盤２６と、基盤２６に設けられた中心翼２７と、外周翼２８などから構成されている。基盤２６は、略円形状（円形を含む）で構成され、水平あるいは外周７ｂに向かうに従って上方に傾斜する傾斜曲面で形成されている。さらに、基盤２６には、多数の小孔２９が形成されている。これにより、内槽内の洗濯水を小孔２９を通して効率よく排水できる。また、基盤２６による攪拌時に、洗濯水を小孔２９を通して対流させることができる。その結果、洗濯効率などを向上することができる。中心翼２７は、基盤２６上に回転中心７ａから外周７ｂに向かって、例えば放射状に設けられている。外周翼２８は、基盤２６上に攪拌翼７の外周７ｂから回転中心７ａに向かって、例えば逆放射状に設けられている。 As shown in FIGS. 1 and 2, the stirring blade 7 of the present embodiment includes at least a base 26, a central blade 27 provided on the base 26, an outer peripheral blade 28, and the like. The board | substrate 26 is comprised by the substantially circular shape (a circle is included), and is formed in the inclined curved surface which inclines upwards toward the horizontal or the outer periphery 7b. Furthermore, a large number of small holes 29 are formed in the base 26. Thereby, the washing water in the inner tub can be efficiently drained through the small holes 29. In addition, washing water can be convected through the small holes 29 during stirring by the base 26. As a result, washing efficiency and the like can be improved. The center wings 27 are provided, for example, radially on the base 26 from the rotation center 7a toward the outer periphery 7b. The outer peripheral blades 28 are provided on the base 26 in, for example, a reverse radial shape from the outer periphery 7b of the stirring blade 7 toward the rotation center 7a.
　なお、本実施の形態では、一例として、中心翼２７と外周翼２８をそれぞれ３箇所ずつ等間隔に形成した構成で示している。具体的には、中心翼２７に対して外周翼２８、あるいは外周翼２８に対して中心翼２７を互いに、攪拌翼７の回転中心７ａに対して、６０度変位させた位置に設けている。 In the present embodiment, as an example, a configuration in which the central blade 27 and the outer peripheral blade 28 are formed at three equal intervals, respectively, is shown. Specifically, the outer wing 28 is disposed with respect to the central wing 27, or the central wing 27 is disposed with respect to the outer wing 28 at a position displaced by 60 degrees with respect to the rotation center 7 a of the stirring blade 7.
　そして、攪拌翼７の中心翼２７は、攪拌翼７の回転中心７ａから外周７ｂに向かって、攪拌翼７の半径の、例えば約１／２の位置まで連続して、基盤２６から上方に隆起した羽根形状で設けられている。一方、外周翼２８は、攪拌翼７の外周７ｂから回転中心７ａに向かって、攪拌翼７の半径の、例えば約１／２の位置まで連続して、基盤２６から上方に隆起した羽根形状で設けられている。 The central blade 27 of the stirring blade 7 bulges upward from the base 26 continuously from the rotation center 7a of the stirring blade 7 toward the outer periphery 7b, for example, to a position of about 1/2 of the radius of the stirring blade 7. It is provided in the shape of a feather. On the other hand, the outer peripheral blade 28 has a blade shape that protrudes upward from the base 26 continuously from the outer periphery 7b of the stirring blade 7 toward the rotation center 7a, for example, to the position of about 1/2 of the radius of the stirring blade 7. Is provided.
　具体的には、中心翼２７は、図１から図３に示すように、攪拌翼７の回転中心７ａに設けられたねじ締結部２６ａを内包し、攪拌翼７の回転中心７ａから放射状に外周７ｂ方向に延設して形成されている。また、中心翼２７は、攪拌翼７の回転中心７ａから外周７ｂに向かうに従って、基盤２６に向かって緩やかに下降傾斜して形成されている。さらに、中心翼２７は、攪拌翼７の回転中心７ａから外周７ｂに向かって、回転方向（円周方向）に対する幅が幅狭になる形状で形成されている。 Specifically, as shown in FIGS. 1 to 3, the center blade 27 includes a screw fastening portion 26 a provided at the rotation center 7 a of the stirring blade 7, and radially surrounds the rotation center 7 a of the stirring blade 7. It extends in the 7b direction. Further, the center blade 27 is formed so as to be gently inclined downward toward the base 26 from the rotation center 7a of the stirring blade 7 toward the outer periphery 7b. Further, the central blade 27 is formed in a shape in which the width with respect to the rotation direction (circumferential direction) becomes narrower from the rotation center 7a of the stirring blade 7 toward the outer periphery 7b.
　上記のように形成された中心翼２７は、一方の側面を構成する羽根側面２７ａと、上面を構成する羽根上面２７ｂと、他方の側面を構成する羽根側面２７ｃとを有している。 The central wing 27 formed as described above has a blade side surface 27a that constitutes one side surface, a blade upper surface 27b that constitutes an upper surface, and a blade side surface 27c that constitutes the other side surface.
　中心翼２７の羽根上面２７ｂは、被洗濯物が載る面となる。そして、羽根上面２７ｂは、上述したように、攪拌翼７の回転中心７ａから外周７ｂに向かうに従って緩やかに下降傾斜するとともに、幅狭になる形状で形成されている。さらに、羽根上面２７ｂは、攪拌翼７の円周方向に対して中央部分２７ｂｂが最も高く、中央部分２７ｂｂから円周方向の両側（羽根側面２７ａおよび羽根側面２７ｃ側）に緩やかに傾斜する形状で形成されている。 The blade upper surface 27b of the central wing 27 is a surface on which the laundry is placed. And as above-mentioned, the blade | wing upper surface 27b is formed in the shape which becomes a width | variety narrowing while it descends | falls gently as it goes to the outer periphery 7b from the rotation center 7a of the stirring blade 7. As shown in FIG. Further, the blade upper surface 27b has a shape in which the central portion 27bb is the highest with respect to the circumferential direction of the stirring blade 7, and is gently inclined from the central portion 27bb to both sides (blade side surface 27a and blade side surface 27c side) in the circumferential direction. Is formed.
　また、中心翼２７の羽根側面２７ａおよび羽根側面２７ｃは、羽根上面２７ｂの外周端から攪拌翼７の円周方向に急激に下降傾斜する形状で形成されている。 Also, the blade side surface 27a and the blade side surface 27c of the central blade 27 are formed in a shape that rapidly descends and slopes in the circumferential direction of the stirring blade 7 from the outer peripheral end of the blade upper surface 27b.
　このとき、中心翼２７は、攪拌翼７の回転中心７ａ側の基点部における羽根上面２７ｂの円周方向の幅Ｗ１を、中心翼２７の先端部２７ｄの回転軌跡の長さの約１／２０以上に設定している。なお、上記設定は、種々の検討結果から得られたものである。 At this time, the central blade 27 has a circumferential width W1 of the blade upper surface 27b at the base point on the rotation center 7a side of the stirring blade 7 and is approximately 1/20 of the length of the rotation locus of the tip 27d of the central blade 27. It is set above. Note that the above settings are obtained from various examination results.
　この構成により、被洗濯物の容量に対して少ない水量で洗いステップを行う場合、被洗濯物の回転駆動によって摩擦力を受ける面積が大きくなる。これにより、被洗濯物を動かしやすくなるため、被洗濯物の位置が入れ替わりやすくなる。その結果、洗いムラを低減することができる。 With this configuration, when the washing step is performed with a small amount of water with respect to the volume of the laundry, the area receiving the frictional force by the rotational driving of the laundry is increased. Thereby, since it becomes easy to move the laundry, the position of the laundry is easily changed. As a result, washing unevenness can be reduced.
　さらに、攪拌翼７の外周翼２８は、図１から図３に示すように、攪拌翼７の外周７ｂから回転中心７ａに向かって延設して形成されている。また、外周翼２８は、攪拌翼７の外周７ｂ側が最も高く、攪拌翼７の外周７ｂから回転中心７ａに向かうに従って、基盤２６に向かって緩やかに下降傾斜して形成されている。さらに、外周翼２８は、攪拌翼７の外周７ｂから回転中心７ａに向かって、回転方向に対する幅が幅狭になる形状で形成されている。 Further, as shown in FIGS. 1 to 3, the outer peripheral blade 28 of the stirring blade 7 is formed to extend from the outer periphery 7b of the stirring blade 7 toward the rotation center 7a. Further, the outer peripheral blade 28 is the highest on the outer periphery 7b side of the stirring blade 7, and is formed so as to be gently inclined downward toward the base 26 from the outer periphery 7b of the stirring blade 7 toward the rotation center 7a. Furthermore, the outer peripheral blade 28 is formed in a shape in which the width with respect to the rotation direction becomes narrower from the outer periphery 7b of the stirring blade 7 toward the rotation center 7a.
　上記のように形成された外周翼２８は、一方の側面を構成する羽根側面２８ａと、上面を構成する羽根上面２８ｂと、他方の側面を構成する羽根側面２８ｃとを有している。 The outer peripheral blade 28 formed as described above has a blade side surface 28a constituting one side surface, a blade upper surface 28b constituting an upper surface, and a blade side surface 28c constituting the other side surface.
　外周翼２８の羽根上面２８ｂは、被洗濯物が載る面となる。そして、羽根上面２８ｂは、上述したように、攪拌翼７の外周７ｂから回転中心７ａ側に向かうに従って緩やかに下降傾斜するとともに、幅狭になる形状で形成されている。さらに、羽根上面２８ｂは、攪拌翼７の円周方向に対して、中央部分２８ｂｂが最も高く、中央部分２８ｂｂから円周方向の両側（羽根側面２８ａおよび羽根側面２８ｃ側）に緩やかに傾斜する形状で形成されている。 The blade upper surface 28b of the outer peripheral wing 28 is a surface on which the laundry is placed. Then, as described above, the blade upper surface 28b is formed to have a shape that gradually falls and becomes narrower as it goes from the outer periphery 7b of the stirring blade 7 toward the rotation center 7a. Further, the blade upper surface 28b is the highest in the central portion 28bb with respect to the circumferential direction of the stirring blade 7, and is gently inclined from the central portion 28bb to both sides in the circumferential direction (blade side surface 28a and blade side surface 28c side). It is formed with.
　また、外周翼２８の羽根側面２８ａおよび羽根側面２８ｃは、羽根上面２８ｂの外周端から攪拌翼７の円周方向に急激に下降傾斜する形状で形成されている。 In addition, the blade side surface 28a and the blade side surface 28c of the outer peripheral blade 28 are formed in a shape that rapidly descends and slopes in the circumferential direction of the stirring blade 7 from the outer peripheral end of the blade upper surface 28b.
　このとき、外周翼２８は、基点となる攪拌翼７の外周７ｂにおける羽根上面２８ｂの円周方向の幅Ｗ２を、外周翼２８の外周長さの約１／２０以上に設定している。なお、上記設定は、種々の検討結果から得られたものである。 At this time, in the outer peripheral blade 28, the circumferential width W2 of the blade upper surface 28b of the outer periphery 7b of the stirring blade 7 serving as a base point is set to about 1/20 or more of the outer peripheral length of the outer peripheral blade 28. Note that the above settings are obtained from various examination results.
　この構成により、被洗濯物の容量に対して少ない水量で洗いステップを行う場合、被洗濯物の得られる浮力が少なく、羽根上面上に直接接触する状態となる。そのため、攪拌翼の回転駆動によって摩擦力を受ける面積が大きくなる。これにより、被洗濯物を動かしやすくなるため、被洗濯物の位置が入れ替わりやすくなる。その結果、洗いムラを低減できる。 With this configuration, when the washing step is performed with a small amount of water with respect to the volume of the laundry, the laundry has a low buoyancy and is in direct contact with the upper surface of the blade. Therefore, the area which receives a frictional force by the rotational drive of a stirring blade becomes large. Thereby, since it becomes easy to move the laundry, the position of the laundry is easily changed. As a result, washing unevenness can be reduced.
　以上のように、本実施の形態の洗濯機に攪拌翼７が構成されている。 As described above, the stirring blade 7 is configured in the washing machine of the present embodiment.
　以下、上記構成の攪拌翼７の動作および作用について、洗いステップを例に、具体的に説明する。 Hereinafter, the operation and action of the stirring blade 7 configured as described above will be described in detail by taking a washing step as an example.
　通常、洗いステップにおいて、被洗濯物２５の容量に対して、少ない洗濯水の水量で洗濯する場合、内槽４内の洗濯水によって被洗濯物２５の得られる浮力が小さい。そのため、被洗濯物２５は洗濯水中を漂わず、沈み込みやすい。沈み込んだ被洗濯物２５は、攪拌翼７付近に、攪拌翼７の凹凸形状にある程度沿って変形した形状となる。これにより、被洗濯物２５が、攪拌翼７の基盤２６よりも、中心翼２７の羽根上面２７ｂおよび外周翼２８の羽根上面２８ｂ上に載ったような状態になる。 Usually, in the washing step, when washing is performed with a small amount of washing water with respect to the capacity of the laundry 25, the buoyancy obtained by the laundry 25 in the inner tub 4 is small. Therefore, the laundry 25 does not drift in the washing water and is easy to sink. The to-be-washed laundry 25 has a shape deformed to some extent along the uneven shape of the stirring blade 7 in the vicinity of the stirring blade 7. Thus, the laundry 25 is placed on the blade upper surface 27b of the central blade 27 and the blade upper surface 28b of the outer peripheral blade 28 rather than the base 26 of the stirring blade 7.
　上記の状態で、例えば図１に示す攪拌翼７を時計回りに回転駆動すると、中心翼２７は、羽根側面２７ａ、羽根上面２７ｂ、羽根側面２７ｃの順番で、被洗濯物２５を動かす力が強く作用する。そのため、中心翼２７は、上記順番で、被洗濯物２５を動かしやすくなる。 In the above state, for example, when the stirring blade 7 shown in FIG. 1 is rotationally driven clockwise, the central blade 27 has a strong force to move the laundry 25 in the order of the blade side surface 27a, the blade upper surface 27b, and the blade side surface 27c. Works. Therefore, the center wing 27 can easily move the laundry 25 in the above order.
　この理由は、羽根側面２７ａ付近の被洗濯物は、攪拌翼７の回転に伴って、羽根側面２７ａと直接接触して回転する。そのため、被洗濯物に、攪拌翼７の回転方向の力が加わりやすい。 This is because the laundry in the vicinity of the blade side surface 27a rotates in direct contact with the blade side surface 27a as the stirring blade 7 rotates. Therefore, a force in the rotation direction of the stirring blade 7 is easily applied to the laundry.
　また、羽根上面２７ｂ付近の被洗濯物は、内槽４内の洗濯水が少ない場合、洗濯水から得られる浮力が小さいため、羽根上面２７ｂと直接接触する。そのため、羽根上面２７ｂ付近の被洗濯物２５は、攪拌翼７の回転駆動によって、羽根上面２７ｂとの摩擦力により、回転力が付与される。 Also, the laundry near the upper surface 27b of the blade is in direct contact with the upper surface 27b of the blade because the buoyancy obtained from the washing water is small when there is little washing water in the inner tub 4. Therefore, the laundry 25 in the vicinity of the blade upper surface 27 b is given a rotational force by the frictional force with the blade upper surface 27 b by the rotational drive of the stirring blade 7.
　なお、羽根側面２７ａは、攪拌翼７の回転による羽根側面２７ａの攪拌作用により、回転方向側付近の被洗濯物２５に対して直接的に回転力を付与する。そのため、被洗濯物２５に対する攪拌作用は、羽根側面２７ａの方が、羽根上面２７ｂより大きい。 The blade side surface 27a directly applies a rotational force to the laundry 25 near the rotation direction by the stirring action of the blade side surface 27a by the rotation of the stirring blade 7. Therefore, the stirring action on the laundry 25 is greater on the blade side surface 27a than on the blade upper surface 27b.
　つまり、羽根側面２７ｃ付近の被洗濯物は、羽根上面２７ｂおよび羽根側面２７ｃによって動かされた被洗濯物と接触することにより動く程度の作用が働くだけである。そのため、羽根側面２７ｃの被洗濯物に対する攪拌作用は、羽根側面２７ａおよび羽根上面２７ｂよりも小さくなる。 That is to say, the laundry in the vicinity of the blade side surface 27c only has an effect of moving when it comes into contact with the laundry moved by the blade upper surface 27b and the blade side surface 27c. Therefore, the stirring action of the blade side surface 27c on the laundry is smaller than that of the blade side surface 27a and the blade upper surface 27b.
　また、中心翼２７と同様に、攪拌翼７を時計回りに回転駆動すると、外周翼２８は、図１に示す羽根側面２８ａ、羽根上面２８ｂ、羽根側面２８ｃの順番で被洗濯物２５を動かす力が強く作用する。そのため、外周翼２８は、上記順番で、被洗濯物２５を動かしやすくなる。 Similarly to the central blade 27, when the stirring blade 7 is rotationally driven clockwise, the outer peripheral blade 28 is a force that moves the laundry 25 in the order of the blade side surface 28a, the blade upper surface 28b, and the blade side surface 28c shown in FIG. Works strongly. Therefore, the outer peripheral wing 28 can easily move the laundry 25 in the above order.
　この理由は、羽根側面２８ａ付近の被洗濯物は、攪拌翼７の回転に伴って、羽根側面２８ａと直接接触して回転する。そのため、被洗濯物に、攪拌翼７の回転方向の力が加わりやすい。 This is because the laundry in the vicinity of the blade side surface 28a rotates in direct contact with the blade side surface 28a as the stirring blade 7 rotates. Therefore, a force in the rotation direction of the stirring blade 7 is easily applied to the laundry.
　また、羽根上面２８ｂ付近の被洗濯物は、被洗濯物２５の容量に対する洗い時の洗濯水の水量が少ない場合、洗濯水から得られる浮力が小さい。これにより、羽根上面２８ｂ付近の被洗濯物は、羽根上面２８ｂと直接接触する。そのため、羽根上面２８ｂ付近の被洗濯物２５は、攪拌翼７の回転駆動によって、羽根上面２８ｂとの摩擦力により、回転力が付与される。 Also, the laundry near the upper surface 28b of the blade has a small buoyancy obtained from the washing water when the amount of the washing water at the time of washing with respect to the capacity of the laundry 25 is small. Thereby, the laundry near the blade upper surface 28b is in direct contact with the blade upper surface 28b. Therefore, the laundry 25 in the vicinity of the blade upper surface 28b is given a rotational force by the frictional force with the blade upper surface 28b by the rotational drive of the stirring blade 7.
　なお、羽根側面２８ａは、攪拌翼７の回転による羽根側面２８ａの攪拌作用により、回転方向側付近の被洗濯物２５に対して直接的に回転力を付与する。そのため、被洗濯物に対する攪拌作用は、羽根側面２８ａの方が、羽根上面２８ｂより大きい。 The blade side surface 28a directly applies a rotational force to the laundry 25 near the rotation direction by the stirring action of the blade side surface 28a due to the rotation of the stirring blade 7. Therefore, the stirring action on the laundry is greater on the blade side surface 28a than on the blade upper surface 28b.
　つまり、羽根側面２８ｃ付近の被洗濯物は、羽根上面２８ｂおよび羽根側面２８ａによって動かされた被洗濯物と接触することにより動く程度の作用が働くだけである。そのため、羽根側面２８ｃの被洗濯物に対する攪拌作用は、羽根側面２８ａおよび羽根上面２８ｂよりも小さくなる。 That is, the laundry to be washed in the vicinity of the blade side surface 28c only has an effect of moving by coming into contact with the laundry to be moved by the blade upper surface 28b and the blade side surface 28a. Therefore, the stirring action of the blade side surface 28c on the laundry is smaller than that of the blade side surface 28a and the blade upper surface 28b.
　一方、内槽４の底面（攪拌翼７）付近よりも高い位置にある洗濯水内の被洗濯物は、内槽４の回転とともに、底面（攪拌翼７）付近の被洗濯物と絡み合う、あるいは被洗濯物同士が接触する。つまり、攪拌翼７付近の被洗濯物が動くと、高い位置にある被洗濯物は、底面付近の被洗濯物の動きに追従して動く。これにより、上述した被洗濯物の動きと同様の動きが生じる。ただし、被洗濯物の位置が水面（洗濯水の表面（大気側））に近づくにつれて、底面（攪拌翼）付近の被洗濯物の動きによる影響が小さくなるため、水面近傍の被洗濯物の動きは小さくなる。 On the other hand, the laundry in the washing water located higher than the vicinity of the bottom surface (stirring blade 7) of the inner tub 4 is intertwined with the laundry near the bottom surface (stirring blade 7) as the inner tub 4 rotates. The laundry is in contact with each other. That is, when the laundry near the stirring blade 7 moves, the laundry at a high position moves following the movement of the laundry near the bottom surface. Thereby, the same movement as the above-described movement of the laundry is generated. However, as the position of the laundry becomes closer to the water surface (the surface of the washing water (atmosphere side)), the influence of the movement of the laundry near the bottom surface (stirring blade) becomes smaller, so the movement of the laundry near the water surface Becomes smaller.
　上述したように、上記構成の攪拌翼７は、中心翼２７による攪拌作用と、外周翼２８による攪拌作用が、被洗濯物に対して同時に作用し、被洗濯物を攪拌する。これにより、効果的に被洗濯物を洗浄することができる。 As described above, in the stirring blade 7 configured as described above, the stirring action by the central blade 27 and the stirring action by the outer peripheral blade 28 act simultaneously on the laundry to stir the laundry. Thereby, the laundry can be washed effectively.
　以下に、上記攪拌翼７の作用により、被洗濯物の位置が入れ替わる状態について、図４から図６を参照して、具体的に説明する。 Hereinafter, the state in which the position of the laundry is switched by the action of the stirring blade 7 will be specifically described with reference to FIGS. 4 to 6.
　図４から図６は、同実施の形態に係る洗濯機の洗いステップにおける攪拌翼の回転駆動による被洗濯物の動きを説明する図である。なお、図４から図６は、攪拌翼７が時計回りの方向に回転する場合を例に示している。 FIG. 4 to FIG. 6 are diagrams for explaining the movement of the laundry by the rotational driving of the stirring blade in the washing step of the washing machine according to the embodiment. 4 to 6 show an example in which the stirring blade 7 rotates in the clockwise direction.
　具体的には、図４は、攪拌翼７による攪拌前の状態における被洗濯物の位置を示している。図５は、時計回りの回転動作開始直後における被洗濯物の位置を示している。図６は、図５の状態から、さらに攪拌翼７が時計回りに回転した状態における被洗濯物の位置を示している。 Specifically, FIG. 4 shows the position of the laundry in a state before stirring by the stirring blade 7. FIG. 5 shows the position of the laundry immediately after the start of the clockwise rotation operation. FIG. 6 shows the position of the laundry in the state where the stirring blade 7 is further rotated clockwise from the state of FIG.
　まず、図４に示すように、攪拌翼７による攪拌前の状態においては、例えば被洗濯物２５ｂは、中心翼２７の羽根側面２７ａが向かう回転方向側に位置している。同様に、被洗濯物２５ｅ、２５ｈは、外周翼２８の羽根側面２８ａが向かう回転方向側に位置している。そのため、被洗濯物２５ｂ、２５ｅ、２５ｈには、攪拌翼７の回転方向の力が最も働きやすく、その結果、移動量が大きくなる。 First, as shown in FIG. 4, in a state before stirring by the stirring blade 7, for example, the laundry 25 b is positioned on the rotational direction side toward which the blade side surface 27 a of the central blade 27 is directed. Similarly, the laundry items 25e and 25h are located on the rotational direction side toward which the blade side surface 28a of the outer peripheral wing 28 is directed. Therefore, the force in the rotational direction of the stirring blade 7 is most likely to act on the laundry items 25b, 25e, and 25h, and as a result, the amount of movement increases.
　具体的には、攪拌翼７が時計回りに回転すると、被洗濯物２５ｂ、２５ｅ、２５ｈは、図４に示す状態から、例えば図５の矢印Ｂ、Ｅ、Ｈで示す方向に移動する。このとき、矢印Ｂは、被洗濯物２５ｂの移動量と移動方向を示している。矢印Ｅは、被洗濯物２５ｅの移動量と移動方向を示している。同様に、矢印Ｈは、被洗濯物２５ｈの移動量と移動方向を示している。 Specifically, when the stirring blade 7 rotates clockwise, the laundry items 25b, 25e, and 25h move from the state shown in FIG. 4 in the directions indicated by arrows B, E, and H in FIG. At this time, the arrow B indicates the amount and direction of movement of the laundry 25b. An arrow E indicates the moving amount and moving direction of the laundry 25e. Similarly, an arrow H indicates the movement amount and movement direction of the laundry 25h.
　また、図４に示す被洗濯物２５ｃは中心翼２７の羽根上面２７ｂ付近に位置し、被洗濯物２５ｆは外周翼２８羽根上面２８ｂ付近に位置している。そのため、被洗濯物２５ｃ、２５ｆは、中心翼２７の羽根上面２７ｂおよび外周翼２８の羽根上面２８ｂとの接触による摩擦力により移動する。つまり、被洗濯物２５ｃ、２５ｆは、攪拌翼７の回転により、図４に示す状態から、例えば図５の矢印Ｃ、Ｆで示す方向に移動する。このとき、矢印Ｃは被洗濯物２５ｃの移動量と移動方向を示し、矢印Ｆは被洗濯物２５ｆの移動量と移動方向を示している。 Further, the laundry 25c shown in FIG. 4 is located near the blade upper surface 27b of the central wing 27, and the laundry 25f is located near the outer blade 28 blade upper surface 28b. Therefore, the laundry items 25c and 25f move due to frictional force caused by the contact between the blade upper surface 27b of the central wing 27 and the blade upper surface 28b of the outer peripheral wing 28. In other words, the laundry items 25c and 25f move from the state shown in FIG. 4 in the directions indicated by arrows C and F in FIG. At this time, the arrow C indicates the movement amount and movement direction of the laundry 25c, and the arrow F indicates the movement amount and movement direction of the laundry 25f.
　また、図４に示す被洗濯物２５ａ、２５ｄ、２５ｇは、移動量の大きい被洗濯物、例えば被洗濯物２５ｂに押されるようにして、図４の状態から、例えば図５の矢印Ａ、Ｄ、Ｇで示す方向に移動する。このとき、矢印Ａは、被洗濯物２５ａの移動量と移動方向を示している。矢印Ｄは、被洗濯物２５ｄの移動量と移動方向を示している。同様に、矢印Ｇは、被洗濯物２５ｇの移動量と移動方向を示している。 Further, the laundry items 25a, 25d, and 25g shown in FIG. 4 are pushed by the laundry item having a large amount of movement, for example, the laundry item 25b, so that, for example, the arrows A and D in FIG. , Move in the direction indicated by G. At this time, the arrow A indicates the moving amount and moving direction of the laundry 25a. An arrow D indicates the moving amount and moving direction of the laundry 25d. Similarly, an arrow G indicates the movement amount and movement direction of the laundry 25g.
　なお、図５中に示す矢印の長さは、各被洗濯物の移動量の大きさを、相対的に表している。つまり、被洗濯物の移動量の大きさは、矢印Ｂ、Ｅ、Ｈ＞矢印Ｃ，Ｆ＞矢印Ａ、Ｄ、Ｇの関係になっている。 In addition, the length of the arrow shown in FIG. 5 relatively represents the magnitude of the amount of movement of each laundry item. That is, the magnitude of the amount of movement of the laundry is in the relationship of arrows B, E, H> arrow C, F> arrows A, D, G.
　つぎに、図５の状態から、さらに攪拌翼７を時計回りに回転駆動した状態の被洗濯物の位置について、図５を参照しながら、図６を用いて説明する。 Next, the position of the laundry in a state where the stirring blade 7 is further rotated clockwise from the state of FIG. 5 will be described with reference to FIG.
　まず、図５示す、例えば中心翼２７の羽根側面２７ａ付近にある移動量の多い被洗濯物２５ｂの回転方向の円周上の移動先には、攪拌力が付与されず、移動量の少ない被洗濯物２５ａがある。そのため、被洗濯物２５ｂは、円周方向への移動が制限される。一方、被洗濯物２５ｂの攪拌翼７の外周７ｂ側では、移動量の多い被洗濯物２５ｅ、２５ｆが回転方向に動くことにより、スペースが形成される。 First, for example, in the vicinity of the blade side surface 27a of the central wing 27 shown in FIG. There is a laundry 25a. Therefore, the laundry 25b is restricted from moving in the circumferential direction. On the other hand, on the outer periphery 7b side of the agitating blade 7 of the laundry 25b, a space is formed by the laundry 25e and 25f having a large amount of movement in the rotational direction.
　これにより、被洗濯物２５ａで円周方向の移動が制限された被洗濯物２５ｂは、中心翼２７の攪拌作用により、図６の矢印Ｉで示すように、空いたスペース方向に移動する。その結果、被洗濯物２５ｂは、中心翼２７付近から外周翼２８付近に移動する。 Thus, the laundry 25b whose movement in the circumferential direction is restricted by the laundry 25a moves in the direction of the empty space as indicated by the arrow I in FIG. As a result, the laundry 25b moves from the vicinity of the central wing 27 to the vicinity of the outer wing 28.
　また、図５に示す、外周翼２８付近にある移動量の多い被洗濯物２５ｈの回転方向の円周上の移動先には、攪拌力が付与されず、移動量の少ない被洗濯物２５ｇがある。そのため、被洗濯物２５ｇは、外周翼２８上の円周方向への移動が制限される。一方、被洗濯物２５ｇの攪拌翼７の回転中心７ａ側では、移動量の多い被洗濯物２５ｂ、２５ｃが回転方向に動くことにより、スペースが形成される。 In addition, a stirring force is not applied to the movement destination on the circumference in the rotation direction of the laundry 25h with a large amount of movement near the outer peripheral wing 28 shown in FIG. is there. Therefore, the movement of the laundry 25g in the circumferential direction on the outer peripheral wing 28 is restricted. On the other hand, on the side of the rotation center 7a of the stirring blade 7 of the laundry 25g, the laundry 25b, 25c having a large amount of movement moves in the rotational direction, thereby forming a space.
　これにより、被洗濯物２５ｇで円周方向の移動が制限された被洗濯物２５ｈは、外周翼２８の攪拌作用により、図６の矢印Ｊで示すように、空いたスペース方向に移動する。その結果、被洗濯物２５ｈは、外周翼２８付近から中心翼２７付近に移動する。 Thus, the laundry 25h whose movement in the circumferential direction is restricted by the laundry 25g is moved in the direction of the empty space as indicated by the arrow J in FIG. As a result, the laundry 25h moves from the vicinity of the outer peripheral wing 28 to the vicinity of the central wing 27.
　つまり、図４から図６に示す被洗濯物の動作によって、内槽４の内周側に位置する被洗濯物と外周側に位置する被洗濯物との位置が入れ替わる機会が増加する。 That is, by the operation of the laundry shown in FIG. 4 to FIG. 6, the opportunity to change the position of the laundry located on the inner peripheral side of the inner tub 4 and the laundry located on the outer peripheral side increases.
　一方、従来の洗濯機の攪拌翼の構成では、入れ替わる機会が少ないため、内槽４の内周側の被洗濯物は、外周側の被洗濯物より洗浄効果が小さくなりやすかった。 On the other hand, in the configuration of the stirring blades of the conventional washing machine, there are few opportunities to be replaced, so that the laundry on the inner peripheral side of the inner tub 4 was likely to have a smaller cleaning effect than the outer peripheral side.
　しかし、本実施の形態の洗濯機によれば、上記で説明したように、攪拌翼７の外周付近の被洗濯物と内周付近の被洗濯物との位置が入れ替わる機会が増加する。これにより、被洗濯物の洗いムラを低減することができる。さらに、少ない洗濯水で洗濯が可能となるため、節水効果も向上する。 However, according to the washing machine of the present embodiment, as described above, the opportunity for the positions of the laundry near the outer periphery of the stirring blade 7 and the laundry near the inner periphery to be increased increases. Thereby, washing unevenness of the laundry can be reduced. Furthermore, since water can be washed with less washing water, the water saving effect is also improved.
　また、本実施の形態の洗濯機によれば、特に、被洗濯物の容量に対して洗濯水の使用水量を少なくして洗濯を行う洗いステップにおいて、被洗濯物が浮力を得にくい。この場合、攪拌翼を回転駆動すると、攪拌翼の中心翼および外周翼と、被洗濯物との接触面積が多くなり、被洗濯物に対して大きな摩擦力が働く。これにより、従来の洗濯機よりも、被洗濯物が攪拌されやすくなる。 In addition, according to the washing machine of the present embodiment, it is difficult for the laundry to obtain buoyancy, particularly in the washing step in which washing is performed by reducing the amount of washing water used relative to the capacity of the laundry. In this case, when the stirring blade is rotationally driven, the contact area between the central blade and the outer peripheral blade of the stirring blade and the laundry is increased, and a large frictional force acts on the laundry. As a result, the laundry is more easily stirred than the conventional washing machine.
　また、本実施の形態によれば、攪拌翼の中心翼と外周翼は、回転中心に対して円周方向の異なる位置に設ける。そのため、被洗濯物に対して最も作用する部分（位置）が、配設された中心翼と外周翼との角度差の分ずれる。これにより、中心翼との直接的な接触により動き始めた被洗濯物は、外周翼との直接的な接触により動き始めた被洗濯物があったスペースへ移動する。逆に、外周翼との直接的な接触により動き始めた被洗濯物は、中心翼との直接的な接触により動き始めた被洗濯物があったスペースへ移動する。その結果、内槽の中心付近の被洗濯物と外周付近の被洗濯物の互い位置を、容易に入れ替えることができる。さらに、上記構成により、より少ない洗濯水で洗いステップを実行できるので、節水効果の向上と洗いムラの低減を同時に実現できる。 Further, according to the present embodiment, the central blade and the outer peripheral blade of the stirring blade are provided at different positions in the circumferential direction with respect to the rotation center. Therefore, the portion (position) that most acts on the laundry is divided by the difference in angle between the central wing and the outer wing. As a result, the laundry that has started to move due to direct contact with the central wing moves to the space where there was the laundry that has started to move due to direct contact with the outer peripheral wing. Conversely, the laundry that has started to move due to direct contact with the outer peripheral wing moves to the space where there was the laundry that has started to move due to direct contact with the central wing. As a result, the positions of the laundry near the center of the inner tub and the laundry near the outer periphery can be easily interchanged. Furthermore, with the above-described configuration, the washing step can be executed with less washing water, so that it is possible to simultaneously improve the water-saving effect and reduce washing unevenness.
　また、本実施の形態によれば、攪拌翼の中心翼と外周翼とを、回転方向に対して交互に設ける。これにより、回転駆動される被洗濯物に対して最も大きく作用する部分と、作用が小さい部分とにずれが発生する。そのため、ずれによる被洗濯物の位置の入れ替わりが、攪拌翼全体で均一的に発生する。その結果、被洗濯物の洗いムラを、より効果的に抑制できる。 Further, according to the present embodiment, the central blade and the outer peripheral blade of the stirring blade are alternately provided in the rotation direction. Thereby, a shift | offset | difference generate | occur | produces in the part which acts most with respect to the laundry to be rotationally driven, and the part with a small effect | action. Therefore, the replacement of the position of the laundry due to the deviation occurs uniformly in the entire stirring blade. As a result, the washing unevenness of the laundry can be more effectively suppressed.
　また、本実施の形態によれば、攪拌翼の中心翼と外周翼とを、回転方向に等間隔に設ける。これにより、回転駆動される被洗濯物に対して最も大きく作用する部分と、作用が小さい分とにずれが発生する。そのため、ずれによる被洗濯物の位置の入れ替わりが、攪拌翼全体で、より均一的に発生する。その結果、被洗濯物の洗いムラを、さらに効果的に抑制できる。 Further, according to the present embodiment, the central blade and the outer peripheral blade of the stirring blade are provided at equal intervals in the rotation direction. As a result, a deviation occurs between the portion that acts most greatly on the laundry to be rotated and the portion that acts less. Therefore, the replacement of the position of the laundry due to the shift occurs more uniformly in the entire stirring blade. As a result, washing unevenness of the laundry can be more effectively suppressed.
　また、本実施の形態によれば、攪拌翼の中心翼の先端部の回転軌跡が、外周翼の先端部の回転軌跡より径大になるように中心翼と外周翼の半径方向の長さを設定する。これにより、攪拌翼の回転方向の力が作用しない被洗濯物を極力なくすことができる。そのため、被洗濯物の位置の入れ替わりを攪拌翼全体で均一的に発生させることができる。その結果、被洗濯物の洗いムラを、より効果的に低減できる。 In addition, according to the present embodiment, the radial lengths of the center blade and the outer wing are set so that the rotation locus of the tip of the central wing of the stirring wing is larger in diameter than the rotation locus of the tip of the outer wing. Set. Accordingly, it is possible to eliminate as much as possible the laundry to which the force in the rotational direction of the stirring blade does not act. Therefore, the change of the position of the laundry can be uniformly generated in the entire stirring blade. As a result, washing unevenness of the laundry can be reduced more effectively.
　また、本実施の形態によれば、攪拌翼の中心翼は、羽根上面と、羽根上面の両側に形成される羽根側面とを有し、中心翼の回転中心側の羽根上面の幅を、中心翼の先端部の回転軌跡の長さの約１／２０以上に設定して設ける。これにより、少ない洗濯水で洗いステップを行う場合、被洗濯物が羽根上面と直接接触する状態となる。そのため、攪拌翼の回転駆動によって摩擦力を受ける面積が多くなり、被洗濯物を動かしやすくなる。その結果、被洗濯物の位置が入れ替わりやすくなるため、被洗濯物の洗いムラの発生をより低減できる。 Further, according to the present embodiment, the central blade of the stirring blade has the blade upper surface and the blade side surfaces formed on both sides of the blade upper surface, and the width of the blade upper surface on the rotation center side of the center blade is It is set to be set to about 1/20 or more of the length of the rotation locus of the tip of the wing. Thereby, when performing a washing step with little washing water, it will be in the state where a to-be-washed object contacts a blade upper surface directly. For this reason, the area receiving the frictional force is increased by the rotational drive of the stirring blade, and the laundry is easily moved. As a result, since the position of the laundry is easily changed, the occurrence of uneven washing of the laundry can be further reduced.
　また、本実施の形態によれば、攪拌翼の外周翼は、羽根上面と、羽根上面の両側に形成される羽根側面とを有し、外周翼の外周側の羽根上面の幅を、攪拌翼の外周の長さの約１／２０以上に設定して設ける。これにより、少ない洗濯水で洗いステップを行う場合、被洗濯物が羽根上面と直接接触する状態となる。そのため、攪拌翼の回転駆動によって摩擦力を受ける面積が多くなり、被洗濯物を動かしやすくなる。その結果、被洗濯物の位置が入れ替わりやすくなるため、被洗濯物の洗いムラ発生をより低減できる。 Further, according to the present embodiment, the outer peripheral blade of the stirring blade has the upper surface of the blade and the blade side surfaces formed on both sides of the upper surface of the blade. It is set to be set to about 1/20 or more of the length of the outer periphery. Thereby, when performing a washing step with little washing water, it will be in the state where a to-be-washed object contacts a blade upper surface directly. For this reason, the area receiving the frictional force is increased by the rotational drive of the stirring blade, and the laundry is easily moved. As a result, since the position of the laundry is easily changed, the occurrence of uneven washing of the laundry can be further reduced.
　また、本実施の形態によれば、攪拌翼の中心翼の半径方向の長さを、攪拌翼の半径の約１／２に設定して設ける。これにより、被洗濯物の位置の入れ替わりを、内槽の中心付近と外周付近で均一的に発生させることができる。その結果、被洗濯物の洗いムラをより低減できる。 Further, according to the present embodiment, the radial length of the central blade of the stirring blade is set to about ½ of the radius of the stirring blade. Thereby, the replacement of the position of the laundry can be uniformly generated near the center and the outer periphery of the inner tub. As a result, washing unevenness of the laundry can be further reduced.
　また、本実施の形態によれば、外周翼の半径方向の長さを、攪拌翼の半径の１／２に設定して設ける。これにより、被洗濯物の位置の入れ替わりを、内槽の中心付近と外周付近で均一的に発生させることができる。その結果、被洗濯物の洗いムラをより低減できる。 Also, according to the present embodiment, the radial length of the outer peripheral blade is set to ½ of the radius of the stirring blade. Thereby, the replacement of the position of the laundry can be uniformly generated near the center and the outer periphery of the inner tub. As a result, washing unevenness of the laundry can be further reduced.
　また、本実施の形態によれば、中心翼の羽根上面を、攪拌翼の外周方向に向かうにつれて、攪拌翼の基盤に近づくように下降傾斜して設ける。これにより、外周側に位置する洗濯物を外周翼によって移動させることができる。その結果、被洗濯物の位置が入れ替わりやすくなるため、洗いムラを低減できる。 Also, according to the present embodiment, the upper surface of the central blade is provided so as to be inclined downward so as to approach the base of the stirring blade as it goes in the outer circumferential direction of the stirring blade. Thereby, the laundry located in the outer peripheral side can be moved by the outer peripheral wing. As a result, since the position of the laundry is easily changed, washing unevenness can be reduced.
　また、本実施の形態によれば、中心翼の羽根上面を、攪拌翼の円周方向の両側に設けられた羽根側面に向かうにつれて、攪拌翼の基盤に近づくように下降傾斜して設ける。これにより、攪拌翼の中心側に位置する被洗濯物を中心翼の羽根上面側に移動させることができる。その結果、被洗濯物の位置が入れ替わりやすくなるため、洗いムラを低減できる。 Further, according to the present embodiment, the upper surface of the blade of the central blade is provided so as to be inclined downward so as to approach the base of the stirring blade toward the blade side surface provided on both sides in the circumferential direction of the stirring blade. Thereby, the to-be-washed material located in the center side of a stirring blade can be moved to the blade | wing upper surface side of a center blade. As a result, since the position of the laundry is easily changed, washing unevenness can be reduced.
　また、本実施の形態によれば、中心翼の羽根上面を、攪拌翼の外周方向に向かうにつれて、円周方向の幅が狭くなるように設ける。これにより、攪拌翼の中心側に位置する被洗濯物を外周側に向かって移動させることができる。その結果、被洗濯物の位置が入れ替わりやすくなるため、洗いムラを低減できる。 Further, according to the present embodiment, the upper surface of the central blade is provided so that the width in the circumferential direction becomes narrower toward the outer peripheral direction of the stirring blade. Thereby, the to-be-washed article located in the center side of a stirring blade can be moved toward an outer peripheral side. As a result, since the position of the laundry is easily changed, washing unevenness can be reduced.
　また、本実施の形態によれば、外周翼の羽根上面を、攪拌翼の回転中心方向に向かうにつれて、攪拌翼の基盤に近づくように下降傾斜して設ける。これにより、内周側に位置する洗濯物を中心翼によって移動させることができる。その結果、被洗濯物の位置が入れ替わりやすくなるため、洗いムラを低減できる。 Further, according to the present embodiment, the upper surface of the outer peripheral blade is provided so as to be inclined downward so as to approach the base of the stirring blade toward the rotation center direction of the stirring blade. Thereby, the laundry located in the inner peripheral side can be moved by the central wing. As a result, since the position of the laundry is easily changed, washing unevenness can be reduced.
　また、本実施の形態によれば、外周翼の羽根上面を、攪拌翼の円周方向の両側に設けられた羽根側面に向かうにつれて、攪拌翼の基盤に近づくように下降傾斜して設ける。これにより、攪拌翼の外周側に位置する洗濯物を外周翼の羽根上面側に移動させることができる。その結果、被洗濯物の位置が入れ替わりやすくなるため、洗いムラを低減できる。 In addition, according to the present embodiment, the upper surface of the outer peripheral blade is provided so as to be inclined downward so as to approach the base of the stirring blade toward the blade side surfaces provided on both sides in the circumferential direction of the stirring blade. Thereby, the laundry located in the outer peripheral side of a stirring blade can be moved to the blade | wing upper surface side of an outer peripheral blade. As a result, since the position of the laundry is easily changed, washing unevenness can be reduced.
　また、本実施の形態によれば、外周翼の羽根上面を、攪拌翼の回転中心方向に向かうにつれて、円周方向の幅が狭くなるように設ける。これにより、攪拌翼の外周側に位置する被洗濯物を内周側に向かって移動させることができる。その結果、被洗濯物の位置が入れ替わりやすくなるため、洗いムラを低減できる。 Further, according to the present embodiment, the upper surface of the outer peripheral blade is provided so that the width in the circumferential direction becomes narrower toward the rotation center direction of the stirring blade. Thereby, the to-be-washed material located in the outer peripheral side of a stirring blade can be moved toward the inner peripheral side. As a result, since the position of the laundry is easily changed, washing unevenness can be reduced.
　本発明は、被洗濯物の容量に対して使用水量が少ない場合でも、洗いムラの低減が要望される洗濯機などの洗浄機器などの分野に広く利用することができる。 The present invention can be widely used in fields such as washing machines such as washing machines that require reduction in washing unevenness even when the amount of water used is small relative to the capacity of the laundry.
　１　　筐体
　２　　サスペンション
　３　　外槽
　４　　内槽
　５，２９　　小孔
　６　　バランサ
　７　　攪拌翼
　７ａ　　回転中心
　７ｂ　　外周
　８　　駆動軸
　９　　減速機構
　１０　　モータ
　１１　　制御部
　１５　　給水弁
　１６　　蓋
　２２　　排水ホース
　２３　　クラッチ
　２５，２５ａ，２５ｂ，２５ｃ，２５ｄ，２５ｅ，２５ｆ，２５ｇ，２５ｈ　　被洗濯物
　２６　　基盤
　２６ａ　　ねじ締結部
　２７　　中心翼
　２７ａ，２７ｃ，２８ａ，２８ｃ　　羽根側面
　２７ｂ，２８ｂ　　羽根上面
　２７ｂｂ，２８ｂｂ　　中央部分
　２７ｄ　　先端部
　２８　　外周翼 DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Suspension 3 Outer tank 4 Inner tank 5,29 Small hole 6 Balancer 7 Stirring blade 7a Rotation center 7b Outer periphery 8 Drive shaft 9 Deceleration mechanism 10 Motor 11 Control part 15 Water supply valve 16 Cover 22 Drain hose 23 Clutch 25, 25a 25b, 25c, 25d, 25e, 25f, 25g, 25h Laundry 26 Base 26a Screw fastening portion 27 Central wing 27a, 27c, 28a, 28c Blade side surface 27b, 28b Blade upper surface 27bb, 28bb Central portion 27d Tip portion 28 Outer circumference Wings

Claims (14)

  1. 少なくとも上方に開口して被洗濯物および洗濯水を収容する内槽と、
    前記内槽の内底部に配設され、回転駆動部によって回転駆動される攪拌翼を有し、
    前記攪拌翼は、回転中心から外周に向かって前記攪拌翼の基盤から上方に隆起して設けられた中心翼と、
    前記外周から前記回転中心に向かって前記攪拌翼の基盤から上方に隆起して設けられた外周翼とを備え、
    前記中心翼と前記外周翼とは、前記攪拌翼の円周方向の異なる位置に配設される洗濯機。     An inner tub that opens at least upward and accommodates laundry and washing water;
    It is disposed on the inner bottom portion of the inner tank, and has a stirring blade that is driven to rotate by a rotation driving unit,
    The stirring blade is a central blade provided so as to protrude upward from the base of the stirring blade toward the outer periphery from the rotation center;
    An outer peripheral blade provided upwardly projecting from the base of the stirring blade toward the rotation center from the outer periphery,
    The central wing and the outer peripheral wing are washing machines disposed at different positions in the circumferential direction of the stirring wing.
  2. 前記中心翼と前記外周翼とは、前記攪拌翼の回転方向に対して交互に配置される請求項１に記載の洗濯機。 The washing machine according to claim 1, wherein the central blade and the outer peripheral blade are alternately arranged with respect to a rotation direction of the stirring blade.
  3. 前記中心翼と前記外周翼とは、前記攪拌翼の回転中心に対して等間隔に配置される請求項１に記載の洗濯機。 The washing machine according to claim 1, wherein the central blade and the outer peripheral blade are arranged at equal intervals with respect to a rotation center of the stirring blade.
  4. 前記攪拌翼の前記外周側の前記中心翼の先端部の回転軌跡が、前記攪拌翼の前記回転中心側の前記外周翼の先端部の回転軌跡より径大になるように、前記中心翼と前記外周翼の半径方向の長さを設定する請求項１に記載の洗濯機。 The central blade and the central wing are arranged so that the rotation locus of the tip portion of the central blade on the outer peripheral side of the stirring blade is larger in diameter than the rotation locus of the tip portion of the outer peripheral blade on the rotation center side of the stirring blade. The washing machine according to claim 1, wherein the radial length of the outer peripheral wing is set.
  5. 前記中心翼は、羽根上面と、前記羽根上面の両側に形成される羽根側面とを有し、前記中心翼の前記回転中心側における前記羽根上面の幅を、前記中心翼の先端部の回転軌跡の長さの１／２０以上に設定する請求項１に記載の洗濯機。 The central wing has an upper surface of the blade and blade side surfaces formed on both sides of the upper surface of the blade, and the width of the upper surface of the blade on the rotation center side of the central wing is defined as the rotation locus of the tip of the central wing. The washing machine according to claim 1, wherein the washing machine is set to 1/20 or more of the length.
  6. 前記外周翼は、羽根上面と、前記羽根上面の両側に形成される羽根側面とを有し、前記外周翼の外周側の羽根上面の幅を、前記攪拌翼の外周の長さの１／２０以上に設定する請求項１に記載の洗濯機。 The outer peripheral blade has a blade upper surface and blade side surfaces formed on both sides of the blade upper surface, and the width of the blade upper surface on the outer peripheral side of the outer blade is set to 1/20 of the outer peripheral length of the stirring blade. The washing machine according to claim 1, which is set as described above.
  7. 前記中心翼の半径方向の長さを、前記攪拌翼の半径の１／２に設定する請求項１に記載の洗濯機。 The washing machine according to claim 1, wherein a length of the central blade in the radial direction is set to ½ of a radius of the stirring blade.
  8. 前記外周翼の半径方向の長さを、前記攪拌翼の半径の１／２に設定する請求項１に記載の洗濯機。 The washing machine according to claim 1, wherein a length in a radial direction of the outer peripheral blade is set to ½ of a radius of the stirring blade.
  9. 前記中心翼の前記羽根上面は、前記攪拌翼の外周方向に向かうにつれて、前記攪拌翼の基盤に近づくように下降傾斜して設けられている請求項５に記載の洗濯機。 The washing machine according to claim 5, wherein the blade upper surface of the central blade is provided so as to be inclined downward so as to approach the base of the stirring blade toward the outer circumferential direction of the stirring blade.
  10. 前記中心翼の前記羽根上面は、前記攪拌翼の円周方向の両側に設けられた前記羽根側面に向かうにつれて、前記攪拌翼の基盤に近づくように下降傾斜して設けられている請求項５に記載の洗濯機。 The upper surface of the blade of the central blade is provided so as to be inclined downward toward the base of the stirring blade toward the blade side surface provided on both sides in the circumferential direction of the stirring blade. The washing machine described.
  11. 前記中心翼の前記羽根上面は、前記攪拌翼の外周方向に向かうにつれて、円周方向の幅が狭くなるように設けられている請求項５に記載の洗濯機。 The washing machine according to claim 5, wherein the blade upper surface of the central blade is provided such that a width in a circumferential direction becomes narrower toward an outer circumferential direction of the stirring blade.
  12. 前記外周翼の前記羽根上面は、前記攪拌翼の回転中心方向に向かうにつれて、前記攪拌翼の基盤に近づくように下降傾斜して設けられている請求項６に記載の洗濯機。 The washing machine according to claim 6, wherein the blade upper surface of the outer peripheral blade is provided so as to be inclined downward so as to approach the base of the stirring blade toward the rotation center direction of the stirring blade.
  13. 前記外周翼の前記羽根上面は、前記攪拌翼の円周方向の両側に設けられた前記羽根側面に向かうにつれて、前記攪拌翼の基盤に近づくように下降傾斜して設けられている請求項６に記載の洗濯機。 The blade upper surface of the outer peripheral blade is provided to be inclined downward so as to approach the base of the stirring blade toward the blade side surface provided on both sides in the circumferential direction of the stirring blade. The washing machine described.
  14. 前記外周翼の前記羽根上面は、前記攪拌翼の回転中心方向に向かうにつれて、円周方向の幅が狭くなるように設けられている請求項６に記載の洗濯機。 The washing machine according to claim 6, wherein the blade upper surface of the outer blade is provided such that a width in a circumferential direction becomes narrower toward a rotation center direction of the stirring blade.
PCT/JP2015/001437 2014-03-20 2015-03-16 Washing machine WO2015141209A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201580013563.7A CN106103827B (en) 2014-03-20 2015-03-16 Washing machine
JP2016508533A JP6298993B2 (en) 2014-03-20 2015-03-16 Washing machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-057469 2014-03-20
JP2014057469 2014-03-20

Publications (1)

Publication Number Publication Date
WO2015141209A1 true WO2015141209A1 (en) 2015-09-24

Family

ID=54144192

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/001437 WO2015141209A1 (en) 2014-03-20 2015-03-16 Washing machine

Country Status (4)

Country Link
JP (1) JP6298993B2 (en)
CN (1) CN106103827B (en)
MY (1) MY177991A (en)
WO (1) WO2015141209A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1075451A (en) * 1953-03-03 1954-10-18 Advanced washing machine
JPS6282998A (en) * 1985-10-07 1987-04-16 株式会社東芝 Washing machine
JPS6365895A (en) * 1986-09-05 1988-03-24 株式会社東芝 Washing machine
US20130199248A1 (en) * 2010-06-04 2013-08-08 Electrolux Do Brasil S.A. Agitator provided with floating element with blades applied to washing machines

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6080495A (en) * 1983-10-12 1985-05-08 株式会社日立製作所 Washer
CN201128820Y (en) * 2007-11-27 2008-10-08 松下电化住宅设备机器(杭州)有限公司 Rotary impeller for washing machine
CN201634891U (en) * 2010-02-05 2010-11-17 苏州三星电子有限公司 Impeller of washing machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1075451A (en) * 1953-03-03 1954-10-18 Advanced washing machine
JPS6282998A (en) * 1985-10-07 1987-04-16 株式会社東芝 Washing machine
JPS6365895A (en) * 1986-09-05 1988-03-24 株式会社東芝 Washing machine
US20130199248A1 (en) * 2010-06-04 2013-08-08 Electrolux Do Brasil S.A. Agitator provided with floating element with blades applied to washing machines

Also Published As

Publication number Publication date
CN106103827A (en) 2016-11-09
MY177991A (en) 2020-09-28
JPWO2015141209A1 (en) 2017-04-06
JP6298993B2 (en) 2018-03-28
CN106103827B (en) 2018-05-04

Similar Documents

Publication Publication Date Title
KR20110063061A (en) Laundry treatment apparatus
KR101934655B1 (en) Drum washing machine
MXPA06009878A (en) Automatic washing machine and toroidal and inverse toroidal washing motion.
WO2013005517A1 (en) Stirring blade, and stirring device and washing machine using same
US20120144877A1 (en) Agitator assembly for clothes washing machine
JP5767282B2 (en) Washing machine
JP2015223318A (en) Washing machine
JP6298993B2 (en) Washing machine
WO2012114741A1 (en) Drum-type washing machine
JP2016106942A (en) Washing machine
KR101959872B1 (en) Drum washing machine
JP5250323B2 (en) Rotating body for washing machine or washing dryer
JP5184678B2 (en) Stirring blade, stirrer using the same, and washing machine
KR0122243Y1 (en) Pulsator for a washing machine
JP2010187722A (en) Washing machine
JP2010000135A (en) Washing/drying machine
WO2016158164A1 (en) Agitating blade and agitator and washing machine using same
JP5406888B2 (en) Stirring device and washing machine using the same
JP2006068409A (en) Drum type washing machine
JP2009247720A (en) Drum-type washing machine
JP4012114B2 (en) Washing machine stirring blades
JP5898598B2 (en) Washing machine
WO2017005308A1 (en) Top loading type laundry washing machine
JP2011024847A (en) Washing machine
US20120124755A1 (en) Basket wash

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15765114

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2016508533

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15765114

Country of ref document: EP

Kind code of ref document: A1