JP2010094248A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine excellent in the finish of washing even if the quantity of laundry is large. <P>SOLUTION: The washing machine includes: an agitator 4 rotatably mounted on the bottom within a washing/dewatering tub 2; a motor 12 to rotationally drive the washing/dewatering tub 2 and the agitator 4; a water pumping pathway 13 disposed on a sidewall within the washing/dewatering tub 2; a water pumping vane 5 disposed under the agitator 4 and guiding washing liquid in the washing/dewatering tub 2 to guide washing liquidto the water pumping pathway 13; and a speed increasing means 30 for increasing the rotational speed of the water pumping vane 5 in the same direction as the agitator 4. The outer periphery of the water pumping vane 5 is disposed between the outer periphery of the agitator 4 and the washing/dewatering tub 2, and the upper end of the outer periphery of the water pumping vane 5 projects upward from the outer peripheral edge of the agitator 4. With this structure, even if the quantity of the laundry is increased, the decline of the rotational speed of the clothes present in the peripheral edge of the washing/dewatering tub 2 is suppressed relative to the rotational speed of the clothes present at the center within the washing/dewatering tub 2, so that the washing machine can achieve the excellent finish of washing. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rotary blade type washing machine for washing clothes by circulating washing water between a washing / dehydrating tub and a water receiving tub, or a washing / drying machine having a drying function.

  In recent years, global environmental protection has become a very important issue. Conserving resources is one of the important themes of such efforts, and in the field of washing machines, water saving and the amount of detergent used are actively reduced. If the amount of washing water or detergent is reduced, it will be difficult for the washing liquid to penetrate into the laundry, or the detergent performance will be lowered due to the lower detergent concentration. A water channel is formed between the washing tub and the washing liquid existing on the lower side of the washing tub by the pumping action of the blades at the lower part of the rotor blade. The washing liquid can be poured from the discharge port formed in this way, and the washing performance can be improved even when there is little washing liquid or detergent.

  Further, not only the effect of pouring the washing liquid from the upper part of the washing tub toward the laundry, but also the washing liquid and the detergent are mixed well by circulating the washing liquid, so that washing with little washing unevenness can be performed.

Conventionally, as shown in FIG. 7, a rotary blade and a pumping blade having a pumping action are separately provided on the same axis, and have transmission means for delaying the rotation of the pumping blade and transmitting the rotation to the rotation of the rotary blade. There is also shown a technique in which washing liquid can be poured into the laundry without reducing the damage of the water pump and suppressing the rotation of the pumping wing (see, for example, Patent Document 1).
JP 2006-223638 A

  However, in such a conventional washing machine, when the laundry increases and spreads throughout the washing / dehydrating tub, not only the rotating blades disposed on the bottom surface of the washing / dehydrating tub are pressed downward, but also the washing machine The clothes that do not follow the rotation of the rotor blades appear due to the contact resistance of the clothes that are in contact with the wall surface of the dehydration tank, and the difference in the movement speed of the clothes causes tangling, stretching, twisting, etc. within a single clothing or between multiple clothing There was a problem that the phenomenon occurred and the finish of the laundry deteriorated.

  In addition, for the same reason, there is a problem that a large load is applied to the motor for stirring the rotor blades, so that the stirring force itself is insufficient and the cleaning ability is reduced.

  The present invention solves the above-mentioned problem. Even when the amount of laundry is increased, the washing speed of the clothes in the washing tub is prevented from being lowered, the washing performance is maintained, and the washing machine has an excellent finish. With the goal.

In order to solve the above-described conventional problems, the washing machine of the present invention includes a rotary blade rotatably provided at the bottom of the washing and dewatering tub, a motor that rotationally drives the washing and dewatering tub and the rotary wing, A pumping path provided on a side wall in the washing / dehydrating tank, and a pumping blade provided below the rotary blade to guide the washing liquid in the washing / dehydrating tank from the bottom of the washing / dehydrating tank to the pumping path. And a speed increasing means for accelerating the rotational speed of the pumping blade in the same direction as the rotary blade, and disposing the outer peripheral portion of the pumping blade between the outer peripheral portion of the rotary blade and the washing and dewatering tub, Even if the laundry is increased by causing the upper end of the outer peripheral portion of the pumping wing to protrude upward from the outer peripheral edge of the rotary wing, washing is performed with respect to the rotation speed of the clothes present in the center of the washing and dewatering tub. Suppresses the decrease in the rotation speed of clothes on the periphery of the dehydration tank It is possible to Ri of excellent washing machine.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the washing machine excellent in the finish with few entanglement, elongation, and twist of clothing.

  According to a first aspect of the present invention, there is provided a water receiving tub, a washing and dewatering tub that is rotatably provided in the water receiving tub, a rotating blade that is rotatably provided at the bottom of the washing and dewatering tub, and the washing and dewatering tub. A motor for rotationally driving the dewatering tub and the rotary blade, a pumping path provided on a side wall in the washing and dewatering tub, and a washing liquid provided in the laundry and dewatering tub provided below the rotary wing in the washing and dewatering A pumping blade for guiding the pumping blade from the bottom of the tank to the pumping passage, and a speed increasing means for accelerating the rotating speed of the pumping blade from the rotating speed of the rotating blade, and the outer peripheral part of the pumping blade is the outer peripheral part of the rotating blade. And the upper end of the outer peripheral portion of the pumping blade protrudes upward from the outer peripheral edge of the rotary blade, thereby increasing the amount of laundry and Even if there is clothing in close contact with the wall of the dehydration tub, Washing machine with excellent finish with less tangling, stretching, and twisting of laundry by improving the rotation delay of clothes by being moved from the wall by the projecting outer periphery of the pumping blade rotating at a higher speed than the rotating blade Can be provided.

  According to a second aspect of the present invention, a pumping blade having an outer peripheral portion protruding between a rotary blade and a washing and dewatering tub is provided with a plurality of protrusions on the outer peripheral portion. The probability of slipping with the weight of the knives is reduced, and the clothing can be easily rotated with the rotation of the pumping wing.

  According to a third aspect of the present invention, the pumping wing is configured such that the outer peripheral portion constitutes a part of the wall surface of the washing and dewatering tub. The rotation delay of the clothes is improved by being moved from the wall surface by the outer peripheral part of the pumping blade rotating at a higher speed than the rotation of the rotating blade arranged on the bottom surface of the water tank, and there is less tangling, stretching and twisting of the laundry. A washing machine with an excellent finish can be obtained.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic longitudinal sectional view of the washing machine according to the first embodiment.

  In the figure, 1 is a water receiving tank, 2 is a washing and dewatering tank, 3 is a rotating balancer, 4 is a rotating blade, 5 is a pumping blade, 6 is a sun gear, 7 is a planetary gear, 8 is an outer ring gear, and 9 is a drive shaft. Reference numeral 10 denotes a speed reduction means, 11 denotes a motor drive shaft, 12 denotes a drive motor, 13 denotes a pumping path, 14 denotes a water inlet, 15 denotes a discharge port, 16 denotes a water inlet, and 17 denotes laundry. The operation in this embodiment will be described below.

  As shown in FIG. 1, a vertical washing machine includes a washing / dehydrating tub 2 rotatably contained in a water receiving tub 1, and a laundry 17 is put into the inside of the washing / dehydrating tub 2 from the top during washing. A rotating blade 4 is rotatably disposed on the bottom surface of the washing and dewatering tub 2 and is deposited on the upper surface of the rotating blade 4 when the laundry is introduced. At the start of washing, the rotor blades 4 are rotated several times, the amount of clothes put in is detected, and appropriate water is injected in several stages.

2 shows an enlarged longitudinal sectional view and a top view showing the rotary blade portion in the first embodiment of the present invention. In the figure, 18 is a protrusion formed at the outer edge portion of the pumping wing, and 19 is a lower blade provided on the lower surface of the pumping wing 5 for sending out circulating water. As shown in the top view of the lower rotating blade portion in FIG. 2, when viewed from above, the rotating blade 4 is incorporated into the protruding portion of the outer edge portion of the pumping blade 5.

  FIG. 3 shows a structure of the speed increasing means 30 shown in FIG. In the figure, 6 is a sun gear fitted and fixed via a drive shaft 9 and a bearing portion 20 for driving the rotor blades, 7 is a planetary gear that rotates around the sun gear 6, and 8 is a rotation of the planetary gear 7. It is an outer ring gear formed on the upper surface of the pumping wing 5 to which the movement is transmitted. The speed increasing ratio of the rotational speed of the pumping blade 5 to the rotating blade 4 can be adjusted by the ratio of the number of teeth of the sun gear 6 and the outer ring gear 8. Here, the number of planetary gears 7 is not particularly limited.

  Since the pumping blade 5 has a higher rotational speed than the rotary blade 4 by the speed increasing means 30, the amount of circulating water due to the rotation of the lower blade 19 can be increased even when the rotational speed of the rotary blade 4 is low. The washing liquid can be quickly and uniformly discharged onto the laundry without damaging it, and a washing machine with excellent washing performance can be obtained.

  As a driving force transmission route, the power of the drive motor 12 fixed to the bottom surface of the water receiving tub 1 is divided into two coaxial axes via the speed reduction means 10 and is driven by a motor that rotates the outer washing and dewatering tub 2. It is transmitted to the shaft 11 and a drive shaft 9 for projecting into the inner washing and dewatering tub 2 and rotating the rotary blade 4. A plurality of planetary gears 7 meshing with an outer ring gear 8 formed on the upper surface of the pumping blade 5 are provided on the lower surface of the rotary blade 4 so as to be rotatable, and the planetary gear 7 is further connected to the sun gear 6 fixed to the bearing portion 20. It is configured to rotate while meshing with the surroundings.

  FIG. 4 shows a partial vertical cross-sectional view and a top view showing an example of another configuration proposal of the rotor blade portion according to the first embodiment of the present invention. In the figure, 21 is a convex structure that is alternately arranged at a predetermined distance on the protrusions 18 provided on the outer edge of the upper surface of the pumping blade 5. The shape is not limited, and the number is not limited. Further, there is no problem even if the convex structure 21 itself is movable, such as rotating, even if it is fixed to the pumping wing 5.

  Further, FIG. 5 shows a partial cross-sectional view and a top view showing an example of another configuration proposal of the rotor blade portion according to the first embodiment of the present invention. In the figure, 22 are spherical protrusions alternately arranged at a predetermined distance on the protrusions 18 provided on the outer edge of the upper surface of the pumping blade 5. 4 and 5, the height of the projecting portion of the pumping blade 5 may be higher than the height of the edge surface of the rotating blade 4 or the height of the projecting portion 18 may be higher than the height of the projecting portion 18. There is no problem even if the upper part of the convex structure 21 or the spherical protrusion 22 provided in the upper part is higher than the edge of the rotor blade 4.

  The convex structure 21 and the spherical protrusion 22 formed on the protrusion 18 provided on the outer edge of the upper surface of the pumping blade 5 make it easier to capture clothing, and the rotation of the pumping blade 5 causes the washing / dehydrating tub 2 to It is possible to actively move clothes near the inner surface, and even when there is a lot of laundry, it is possible to reduce the partial rotation delay when clothes are mixed and the difference in movement between clothes. Phenomena such as twisting can be reduced, and a washing machine excellent in washing finish can be obtained.

  Moreover, since the pumping blade 5 has a higher rotational speed than the rotary blade 4 by the speed increasing means 30, the amount of circulating water due to the rotation of the lower blade 19 can be increased even when the rotational speed of the rotary blade 4 is low. The washing liquid can be quickly and uniformly discharged onto the laundry without damaging the article, and the washing machine can be made excellent in washing performance.

The mechanical energy of the rotor blades driven by the drive motor adopting a configuration in which the pump blades are provided separately below the rotor blades, and the upper end of the outer periphery of the pump blade protrudes between the rotor blade outer periphery and the washing and dewatering tub. By increasing the rotational speed of the pumping blade in the same direction as the rotor blade through the speed increasing means, the amount of washing increases, and the laundry that directly contacts the wall surface of the washing and dewatering tank and cannot follow the movement of the rotor blade also protrudes. Thus, it is possible to provide a washing machine that is agitated with the rotation of the outer peripheral portion of the pumped wing and has excellent finish with less tangling, stretching, and twisting of clothing.

  In addition, since the pumping speed of the pumping blade is increased faster than the rotating speed of the rotor blade, the amount of circulating water increases due to the rotation of the pumping blade even if the rotating speed of the rotor blade is slow. A washing machine that does not damage clothes can be provided.

  Furthermore, since the outer periphery of the pumping blade protrudes between the outer periphery of the rotor blade and the washing and dewatering tank, the rotation status of the rotor blade and the pumping blade can be grasped at the same time, and the maintenance check that makes it easy to check the operation of the equipment. It is possible to provide a washing machine that is easy to peel.

  The washing machine of the present invention is a washing machine in which a pumping blade having an outer peripheral portion protruding between a rotary blade and a washing / dehydrating tub is provided with a plurality of protrusions on the outer peripheral portion. As a result, it is possible to reliably carry out the capture of the washing clothes present at the outer edge of the washing / dehydrating tank without slipping, and the rotation speed of the clothes existing in the center of the washing / dehydrating tank even when the number of washing clothes increases Accordingly, it is possible to suppress a decrease in the rotation speed of the clothes existing at the peripheral edge with respect to the washing machine with excellent finish.

  The washing machine of the present invention is a washing machine in which the pumping blades constitute a part of the wall surface of the washing and dewatering tub at the outer peripheral portion. As a result, even if the amount of laundry increases, the clothes that are in direct contact with the washing and dewatering tub can be actively moved in the same direction as the movement of the rotary blades, and are present in the center of the washing and dewatering tub. It is possible to suppress a decrease in the rotation speed of the clothes existing at the peripheral edge with respect to the rotation speed of the clothes, and to obtain a washing machine having an excellent finish.

  In the washing machine of the present invention, the rotor blade is directly coupled to the drive shaft of the motor, and the rotation of the motor drive shaft is transmitted to the pumping blade through the speed increasing means. Even when a load is applied to the rotor blades, the rotor blades can be stably rotated without being rattled or tilted by being directly connected to the drive shaft and being fixed.

(Embodiment 2)
FIG. 6 shows a partial longitudinal sectional view showing the rotor blade part in the second embodiment. In the figure, reference numeral 23 denotes a baffle disposed on the rotary blade 4, and reference numeral 24 denotes a pumping path cover disposed on the inner surface of the washing and dewatering tub to form a circulating water path. Other numbers represent the same contents as those already illustrated. The operation in this embodiment will be described below.

  When the clothes to be washed increase, the clothes come into contact with the washing / dehydrating tub 2 and the pumping path cover 24 while being pressed. Rotation of the rotating blade 4 formed as a part of the inner wall of the washing / dehydrating tub 2 by the contact or the clothing near the inner wall of the washing / dehydrating tub 2 that has become difficult to move by moving away from the center of the rotating blade 4 It is provided on the outer edge of the pumping wing 8 that rotates faster than the speed, and the convex structure 21 is disposed on the side of the rotating blade 4 of the projecting portion 18, so that partial rotation delay during clothing agitation and clothing The difference in movement can be reduced, and phenomena such as entanglement, stretching and twisting between clothes can be reduced, and a washing machine excellent in washing finish can be obtained. Moreover, since the pumping blade 5 has a higher rotational speed than the rotary blade 4 by the speed increasing means 30, the amount of circulating water due to the rotation of the lower blade 19 can be increased even when the rotational speed of the rotary blade 4 is low. The washing liquid can be quickly and uniformly discharged onto the laundry without damaging the article, and the washing machine can be made excellent in washing performance.

  As described above, in the washing machine of the present invention, even when the amount of laundry increases and the laundry fills the entire washing / dehydrating tub, the outer edge clothing in contact with the washing / dehydrating tub is accelerated by the speed increasing means. It is actively moved by a part of the pumping wing whose rotational speed is higher than that of the rotary wing, thereby reducing the difference in the rotational speed of the laundry present at the center and outer edge of the washing and dewatering tub. Since it is possible to wash with excellent finish with little twist, it can be applied to a wide range of uses such as a washing machine for business use as well as a washing machine for home use.

1 is a schematic longitudinal sectional view of a washing machine according to Embodiment 1 of the present invention. (A) Enlarged longitudinal sectional view showing the rotor blade part in Embodiment 1 of the present invention (b) Top view showing the rotor blade part in Embodiment 1 of the present invention AA sectional view of speed increasing means 30 in Embodiment 1 of the present invention. (A) Partial longitudinal cross-sectional view showing another configuration proposal of the rotor blade portion in Embodiment 1 of the present invention (b) Partial longitudinal cross-sectional view showing another configuration plan of the rotor blade portion in Embodiment 1 of the present invention (A) Partial longitudinal cross-sectional view showing another configuration proposal of the rotor blade portion in Embodiment 1 of the present invention (b) Partial longitudinal cross-sectional view showing another configuration plan of the rotor blade portion in Embodiment 1 of the present invention Partial longitudinal cross-sectional view which shows the rotary blade part in Embodiment 2 of this invention Schematic longitudinal sectional view of the side of a conventional washing machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water receiving tank 2 Washing / dehydration tank 3 Rotating balancer 4 Rotating blade 5 Pumping blade 6 Sun gear 7 Planetary gear 8 Outer ring gear 9 Drive shaft 10 Deceleration means 11 Motor drive shaft 12 Drive motor 13 Pumping passage 14 Water inlet 15 Discharge port 16 Water inlet 17 Laundry 18 Protruding part 19 Lower blade 20 Bearing part 21 Convex structure 22 Spherical protrusion 23 Baffle 24 Pumpway cover

Claims (3)

A water receiving tub, a washing and dewatering tub rotatably provided in the water receiving tub, a rotary blade rotatably provided at the bottom of the washing and dehydrating tub, the washing and dehydrating tub, and the rotary wing A rotary drive motor, a pumping path provided on a side wall in the washing / dehydrating tub, and a washing liquid in the washing / dehydrating tub provided below the rotary blade from the bottom in the washing / dehydrating tub. A pumping blade for leading to the pumping path, and a speed increasing means for making the rotational speed of the pumping blade faster than the rotational speed of the rotating blade, and the speed increasing means is coupled to the drive shaft of the motor. The rotation of the drive shaft of the motor is transmitted to the pumping blade, and the outer peripheral portion of the pumping blade is disposed between the outer peripheral portion of the rotary blade and the washing / dehydrating tub, and the outer periphery of the pumping blade A washing machine having an upper end protruding upward from the outer peripheral edge of the rotor blade. The washing machine according to claim 1, wherein the pumping blade having an outer peripheral portion protruding between the rotary blade and the washing / dehydrating tub has a plurality of protrusions on the outer peripheral portion. The washing machine according to claim 1 or 2, wherein the pumping blade constitutes a part of a wall surface of the washing and dewatering tub at an outer peripheral portion.