JP2022010784A - washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine capable of efficiently draining water dehydrated from laundry in a washing tub to the outside of the dehydration tub at the time of dehydration. SOLUTION: A dehydration tank in which a pulsator is arranged at the bottom and a plurality of water passage holes are formed on the inner peripheral surface thereof, and three or more arranged at equal intervals in the circumferential direction with respect to the inner peripheral surface of the dehydration tank. The baffle is equipped with a water injection device capable of injecting adjusted water individually to each baffle, and a water receiving plate protruding radially inward from the outer peripheral side wall of the baffle is formed inside the baffle. It has a water storage space 8Ta that is arranged above the receiving plate and stores the regulated water, and a drainage space 8Tb that is arranged below the water receiving plate and drains the regulated water that has flowed out of the water storage space. The directional length is formed longer than the circumferential length of the drainage space 8Tb, and the inner peripheral surface of the water storage space 8Ta has an inclined surface A arranged radially outward as it goes downward, and the drainage space 8Tb in the dehydration tank. Water passage holes 2t are arranged in both sides of the circumferential direction. [Selection diagram] FIG. 5

Description

The present invention relates to a washing machine capable of eliminating the imbalance of the dehydration tub while continuing the rotation of the dehydration tub and suppressing vibration and noise due to eccentricity of the dehydration tub during dehydration.

A general washing machine installed in a general household or a coin laundry has a dehydration tank in which a large number of water passage holes are formed on the inner peripheral surface. Therefore, the water dehydrated from the laundry in the dehydration tub at the time of dehydration is drained to the outside of the dehydration tub through a large number of water passage holes. Further, if the bias of the laundry is large during dehydration, the eccentricity of the dehydration tub during rotation becomes large, and a large torque is required for rotation, so that the dehydration operation cannot be started.

Therefore, in Patent Document 1, an unbalanced amount and an unbalanced position of clothes in the washing tub are detected at the time of dehydration, and if there is an imbalance, a plurality of baffles evenly provided in the circumferential direction of the dehydration tub are provided. A technique for positively eliminating the unbalanced state of the dehydration tank by injecting water is disclosed.

Japanese Unexamined Patent Publication No. 2017-56025

In the washing machine of Patent Document 1, since a plurality of baffles are provided on the inner peripheral surface of the dehydration tub, there is a problem that the area of the inlet of the dehydration tub and the volume in the dehydration tub become small. As a method of solving the problem while maintaining the amount of water that can be injected into the baffle, it is conceivable to reduce the thickness of the baffle and widen the baffle in the circumferential direction accordingly. However, when the baffle is widened in the circumferential direction, the number of water passage holes formed on the inner peripheral surface of the dehydration tub is reduced, so that the water dehydrated from the laundry in the dehydration tub during dehydration passes through the water passage holes. Therefore, it becomes impossible to efficiently drain water to the outside of the dehydration tank.

Therefore, the present invention can provide a washing machine capable of efficiently draining the water dehydrated from the laundry in the washing tub to the outside of the dehydration tub at the time of dehydration.

In the washing machine according to the present invention, a dehydration tub in which a pulsator is arranged at the bottom and a plurality of water passage holes are formed on the inner peripheral surface thereof, and a dehydration tub are arranged at equal intervals in the circumferential direction with respect to the inner peripheral surface of the dehydration tub. It is provided with three or more baffles to be provided and a water injection device capable of injecting adjusted water individually to each baffle, and a water receiving plate protruding inward in the radial direction from the outer peripheral side wall thereof is formed inside the baffle. The baffle is arranged above the water receiving plate to store the regulated water, and is arranged below the water receiving plate to drain the regulated water flowing out of the water receiving plate. The water storage space is formed so that the circumferential length of the water storage space is longer than the circumferential length of the drainage space, and the inner peripheral surface of the water storage space is arranged radially outward as it goes downward. It is characterized in that it has an inclined surface so as to be inclined, and the water passage holes are arranged in both sides of the drainage space in the circumferential direction in the dehydration tank.

In the washing machine according to the present invention, it is preferable that a diversion portion for diversion of the water flow toward both sides in the circumferential direction of the drainage space is formed in the vicinity of the lower end portion of the inner peripheral surface of the water storage space.

In the washing machine according to the present invention, it is preferable that the opening area of the water passage holes formed in both sides of the drainage space in the dehydration tub in the circumferential direction decreases from the upper side to the lower side.

In the washing machine according to the present invention, a gap is formed between the inner peripheral surface of the dehydration tub and the back surface of the baffle, and the inner peripheral surface of the dehydration tub faces the back surface of the baffle. It is preferable that the water passage hole is arranged.

According to the present invention, even when the baffle is widened in the circumferential direction, it has an inclined surface that is inclined so as to be arranged radially outward as the inner peripheral surface of the water storage space of the baffle advances downward. The water dehydrated from the laundry inside is guided to the lower part of the water storage space. Then, since the water passage hole is arranged below the water storage space, the water dehydrated from the laundry is efficiently drained to the outside of the dehydration tank. Therefore, dehydration can be smoothly performed at the time of dehydration. Furthermore, since the water dehydrated from the laundry is concentrated and drained from the lower part of the dehydration tank, it is difficult for the drained water to collect between the outer tank and the dehydration tank, and the water is smoothly guided to the drain hole of the outer tank. Can be done.

According to the present invention, since the diversion portion for diversion of the water flow toward both sides in the circumferential direction of the drainage space is formed near the lower end portion of the inner peripheral surface of the water storage space, the water dehydrated from the laundry is stored. It can be guided to the water passage hole located below the space, and drainage can be done more smoothly.

According to the present invention, the opening area of the water passage holes formed in both sides of the drainage space in the dehydration tank in the circumferential direction becomes smaller from the upper side to the lower side, so that the water can be drained more smoothly during dehydration.

According to the present invention, the water dehydrated from the laundry in the dehydration tub at the time of dehydration wraps around from the left and right ends of the baffle to the back surface side, and creates a gap between the inner peripheral surface of the dehydration tub and the back surface of the baffle. After passing through, it is efficiently drained from the water passage hole to the outside of the dehydration tank.

It is a perspective view which shows the appearance of the washing machine 1 which concerns on 1st Embodiment of this invention. It is a schematic diagram which shows the structure of the washing machine 1 of FIG. FIG. 3 is a plan view of a part of the washing machine 1 of FIG. 1 as viewed from above. It is sectional drawing of the dehydration tub 2 which the washing machine 1 of FIG. 1 has. FIG. 5A is a view of the baffle 8 formed on the inner peripheral surface 2a1 of the dehydration tank ₂ as viewed from the inner peripheral side, and FIG. 5B is _a view of a1-1 of FIG. 5A. It is a cross-sectional view taken along the line, and FIG. 5 (c) is a cross-sectional view taken along the line _a2 - _a2 of FIG. 5 (a). It is an electric block diagram of the washing machine 1 of FIG. FIG. 7 (a) is a view of the baffle 8 formed on the inner peripheral surface 2a1 of the dehydration tub 2 of the washing machine according to the second embodiment of the present invention as viewed from the inner peripheral side, and FIG. 7 (b) is a view. 7 (a) is a cross-sectional view taken along the line a1 _- a1, FIG. 7 (c) is a cross-sectional view taken along the line _{a2 - a2} of FIG. 7 (a), and FIG. 7 (d) is a cross-sectional view. , FIG. 7 (a) is a cross-sectional view taken along the line a3 _{- a3} . FIG. 8A is a view of the baffle 8 formed on the inner peripheral surface 2a1 of the dehydration tub 2 of the washing machine according to the third embodiment of the present invention as viewed from the inner peripheral side, and FIG. 8B is a view. , Is a schematic diagram of the dehydration tank 2.

Hereinafter, the washing machine 1 according to the embodiment of the present invention will be described in detail with reference to the drawings.

(First Embodiment)
FIG. 1 is a perspective view showing the appearance of a vertical washing machine (hereinafter referred to as “washing machine”) 1 according to the first embodiment of the present invention. FIG. 2 is a schematic view showing the configuration of the washing machine 1 of the present embodiment. FIG. 3 is a plan view of a part of the washing machine 1 of the present embodiment as viewed from above. FIG. 4 is a cross-sectional view of the dehydration tub 2 of the washing machine 1.

The washing machine 1 of the present embodiment includes a washing machine main body 1a, a dehydration tank 2, an outer tank 3, a water receiving ring unit 5, a water injection device 30 (nozzle unit), a drive unit 50, and a control means 60 ( (See FIG. 6).

The washing machine main body 1a shown in FIG. 1 has a substantially rectangular parallelepiped shape. An opening 11 for taking in and out laundry from the dehydration tub 2 is formed on the upper surface of the washing machine main body 1a, and an opening / closing lid 11a capable of opening and closing the opening 11 is attached.

The outer tub 3 is a bottomed cylindrical member arranged inside the washing machine main body 1a, and can store washing water inside. A drainage port 10 is formed on the bottom surface of the outer tank 3, and a drainage pipe 10a is connected to the drainage port 10. As shown in FIG. 2, an acceleration sensor 56 capable of detecting acceleration in two directions, horizontal and vertical, is attached to the outer peripheral surface 3a of the outer tank 3.

The dehydration tank 2 is a bottomed cylindrical member that is arranged coaxially with the outer tank 3 in the outer tank 3 and is rotatably supported. The dehydration tank 2 can accommodate laundry inside, and has a large number of water passage holes 2t (see FIG. 5A) on the wall surface 2a thereof.

A pulsator (stirring blade) 4 is rotatably arranged in the center of the bottom 2c of the dehydration tank 2. As shown in FIG. 2, the pulsator 4 includes a substantially disk-shaped pulsator main body 4a, a plurality of upper blade portions 4b formed on the upper surface of the pulsator main body 4a, and a plurality of lower blades formed on the lower surface of the pulsator main body 4a. It has a part 4c. Such a pulsator 4 agitates the washing water stored in the outer tub 3 to generate a water flow.

As shown in FIG. 4, the inner peripheral surface 2a1 of the dehydration tank 2 is provided with three baffles (water injection pipes) 8 as water pipe portions at equal intervals (equal angles) in the circumferential direction. Each baffle 8 extends in the vertical direction from the bottom portion 2c of the dehydration tank 2 to the upper end portion, and is formed so as to project from the inner peripheral surface 2a1 of the dehydration tank 2 toward the axis S1. Further, each baffle 8 has a hollow shape, and the cross-sectional shape is formed in an arc shape. In this way, the shape of the baffle 8 is such that the protrusion of the dehydration tank 2 to the axis S1 is small and the shape spreads along the circumferential direction of the dehydration tank 2, thereby suppressing the narrowing of the accommodation space of the dehydration tank 2. can.

As shown in FIG. 2, a horizontally long circulation water port 80 is formed at the upper end of such a baffle 8. Further, at the lower end of the baffle 8, an opening 81 that opens in the vicinity of the bottom 2c of the dehydration tank 2, more specifically below the pulsator main body 4a, is formed.

Therefore, in the washing step in which the drain valve 10a ₁ (see FIG. 2) is closed and the washing water is stored in the outer tub 3, as shown by the arrow in FIG. 2, the lower blade portion 4c of the pulsator 4 is used. The agitated washing water infiltrates through the opening 81, rises inside the baffle 8, is discharged from the circulating water port 80, and the clothes are shower-washed. Further, by repeating this operation, the washing water circulates in the dehydration tank 2. That is, the baffle 8 has a function of circulating washing water.

In the vicinity of the upper end of the baffle 8, a partition 8a extending from the circulation water port 80 to a position close to the inner peripheral surface 2a1 of the dehydration tank 2 is provided. The section 8a extends radially outward from the upper edge of the circulation port 80 and then curves downward. A gap 8b (see FIG. 2) is formed between the partition 8a and the inner peripheral surface 2a1 of the dehydration tank 2, and the adjusting water supplied from the water receiving ring unit 5 passes through the gap 8b. It flows downward.

As shown in FIG. 3, the water receiving ring unit 5 is configured by having three layers of annular water gutters 5a, 5b, 5c opened upward in a radial direction toward the axis S1 of the dehydration tank 2. As shown in FIG. 2, it is fixed to the upper end portion of the inner peripheral surface 2a1 of the dehydration tank 2. The number of water guide gutters 5a, 5b, and 5c is the same as that of the baffle 8, and the water guide gutters 5a, 5b, and 5c are formed so that the adjusting water can flow to any of the baffle 8 independently.

As shown in FIG. 3, an opening 5A that opens outward in the radial direction is formed at the lower end of the water guide gutter 5a, and the water guide gutter 5a and the inside of the baffle 8 communicate with each other. An opening 5B that opens outward in the radial direction is formed at the lower end of the water guide gutter 5b, and the inside of the water guide gutter 5b and the baffle 8 is formed via a water passage path 5Ba that passes below the water guide gutter 5a. Is in communication. An opening 5C that opens outward in the radial direction is formed at the lower end of the water guide gutter 5c, and the water guide gutter 5c and the baffle are formed via a water passage path 5Ca that passes below the water guide gutter 5a and the water guide gutter 5b. It communicates with the inside of 8.

An annular fluid balancer 12 is attached to the outer peripheral side of the water receiving ring unit 5. The fluid balancer 12 is similar to a known fluid balancer.

The water injection device 30 individually injects adjusted water into such water guides 5a, 5b, 5c. The water injection device 30 includes three water injection nozzles 30a, 30b, 30c arranged above the water guides 5a, 5b, 5c, and water supply valves 31a, 31b, respectively connected to these water injection nozzles 30a, 30b, 30c. It has 31c and. The water injection nozzles 30a, 30b, 30c are provided in the same number as the water guides 5a, 5b, 5c, and are attached to the upper end of the outer tank 3 at positions where water can be injected into the separate water guides 5a, 5b, 5c. In this embodiment, tap water is used as the adjusting water. Further, as the water supply valves 31a, 31b and 31c, it is also possible to adopt a direction switching water supply valve.

The drive unit 50 shown in FIG. 2 is driven by the dehydration tank 2 and the pulsator 4 by rotating the pulley 52 and the belt 53 by the motor 51 and rotating the drive shaft 54 extending toward the bottom 2c of the dehydration tank 2. A force is applied to rotate the dehydration tank 2 and the pulsator 4. In the washing machine 1, only the pulsator 4 is mainly rotated in the washing step, and in the dehydration step, the dehydration tub 2 and the pulsator 4 are integrally rotated at high speed. Further, in the vicinity of one of the pulleys 53, a proximity switch 55 capable of detecting the passage of the mark 52a formed on the pulley 52 is provided.

FIG. 5A is a view of the baffle 8 formed on the inner peripheral surface 2a1 of the dehydration tank ₂ as viewed from the inner peripheral side, and FIG. 5B is _a view of a1-1 of FIG. 5A. It is a cross-sectional view taken along the line, and FIG. 5 (c) is a cross-sectional view taken along the line _a2 - _a2 of FIG. 5 (a).

As shown in FIG. 5B, a projecting wall portion 82 projecting inward in the radial direction is provided in the vicinity of the lower end of the inner peripheral side wall of the baffle 8. That is, a part of the inner peripheral side wall of the baffle 8 projects inward in the radial direction. As shown in FIGS. 5A and 5B, a water receiving plate 85 is formed inside the baffle 8 so as to project radially inward from the outer peripheral side wall thereof.

The water receiving plate 85 is arranged at the same height as the protruding wall portion 82, and the radial inner end portion 85a of the water receiving plate 85 is arranged inside the protruding wall portion 82. A gap is formed between the radial inner end portion 85a of the water receiving plate 85 and the inner peripheral surface of the tip of the protruding wall portion 82, and the adjusting water supplied to the water storage space 8Ta passes through the gap. It flows into the drainage space 8Tb.

The internal space of the baffle 8 has a water storage space 8Ta arranged above the protruding wall portion 82 in which the water receiving plate 85 is arranged, and a drainage space 8Tb arranged below the protruding wall portion 82. The water storage space 8Ta is a space for storing the regulated water from the water guides 5a, 5b, 5c, and the drainage space 8Tb is a space for draining the regulated water flowing out from the water storage space 8Ta.

As shown in FIGS. 5A and 5B, the radial thickness of the water storage space 8Ta and the radial thickness of the drainage space 8Tb are substantially the same, whereas the vertical length of the drainage space 8Tb is It is shorter than the vertical length of the water storage space 8Ta. The circumferential length of the water storage space 8Ta is formed to be longer than the circumferential length of the drainage space 8Tb. Therefore, the volume of the water storage space 8Ta is larger than the volume of the drainage space 8Tb.

The adjusted water injected into the water storage space 8Ta of the baffle 8 is held by the water receiving plate 85 arranged in the protruding wall portion 82 so as not to flow downward, and the protruding wall portion 82 is held along the upper surface of the water receiving plate 85. It flows inward in the radial direction. When the adjusting water is injected into the water storage space 8Ta of the baffle 8 while the dehydration tank 2 is rotated, the adjusting water sticks to the outer peripheral walls of the water guides 5a, 5b, 5c due to centrifugal force, so that the adjusting water is stored in the water storage space 8Ta. It is kept inside.

In FIGS. 5 (b) and 5 (c), the dotted line extending in the vertical direction indicates a straight line passing through the lower end of the water storage space 8Ta and parallel to the vertical direction. As shown in FIGS. 5 (b) and 5 (c), the inner peripheral surface of the water storage space 8Ta is inclined so as to be arranged radially inward from the lower end to the upper end. That is, the inner peripheral surface of the water storage space 8Ta is formed on an inclined surface A that is inclined so as to be arranged radially outward from the upper end to the lower end. In the present embodiment, the entire area of the inner peripheral surface of the water storage space 8Ta is the inclined surface A.

As shown in FIG. 5A, a plurality of water passage holes 2t are formed in the circumferential direction side regions of the drainage space 8Tb in the dehydration tank 2, as in the region where the baffle 8 is not formed on the inner peripheral surface 2a1 of the dehydration tank 2. Is placed.

The diameter of the water passage hole 2t arranged in the region close to the lower end of the water storage space 8Ta is large, and the diameter of the water passage hole 2t formed in the region close to the bottom 2c of the dehydration tank 2 is small. That is, the diameters of the water passage holes 2t arranged in the circumferential direction side regions of the drainage space 8Tb become smaller from the upper side to the lower side.

Further, the diameter of the water passage hole 2t formed in the region where the baffle 8 is not formed on the inner peripheral surface 2a1 of the dehydration tank 2 is the diameter of the water passage hole 2t formed in the region close to the bottom 2c of the dehydration tank 2. It is almost the same.

Therefore, assuming that the opening ratio of the water passage hole 2t is the ratio of the opening of the water passage hole 2t in a predetermined area, the opening ratio of the water passage hole 2t in both sides of the drainage space 8Tb in the circumferential direction is the inner peripheral surface of the dehydration tank 2. It is larger than the opening area of the water passage hole 2t in the region where the baffle 8 is not formed in 2a1. The opening ratio of the water passage hole 2t in both sides of the drainage space 8Tb in the circumferential direction decreases from the upper side to the lower side.

In the washing machine 1 of the present embodiment, as shown in FIGS. 5 (a) and 5 (b), the water dehydrated during dehydration inside the dehydration tank 2 is placed on the inner peripheral surface of the water storage space 8Ta by centrifugal force. When pressed, it becomes easier to flow toward the lower end of the water storage space 8Ta arranged radially outside from the upper end of the water storage space 8Ta. After that, the water dehydrated at the time of dehydration is drained to the outside of the dehydration tank 2 from the water passage holes 2t formed in both sides of the drainage space 8Tb in the circumferential direction, and is guided to the drain holes of the outer tank 3.

FIG. 6 is a block diagram showing an electrical configuration of the washing machine 1 of the present embodiment. The operation of the washing machine 1 is controlled by a control means 60 including a microcomputer. The control means 60 includes a central control unit (CPU) 61 that controls the entire system, and connects the control means 60 with a memory 62 that stores various set values and the like. Further, the control means 60 causes the microcomputer to execute the program stored in the memory 62 to perform a predetermined operation operation, and the memory 62 contains data and the like used when executing the program. Is temporarily memorized.

The central control unit 61 outputs a control signal to the rotation speed control unit 63, and further outputs the control signal to the motor control unit (motor control circuit) 64 to control the rotation of the motor 51. The rotation speed control unit 63 inputs a signal indicating the rotation speed of the motor 51 from the motor control unit 64 in real time to serve as a control element. An acceleration sensor 56 is connected to the unbalanced amount detection unit 65, and an acceleration sensor 56 and a proximity switch 55 are connected to the unbalanced position detection unit 66.

As a result, when the proximity switch 55 detects the marker 52a (see FIG. 2), the unbalanced amount (M) is calculated by the unbalanced amount detecting unit 65 from the magnitudes of the horizontal and vertical accelerations from the acceleration sensor 56. Then, this unbalanced amount is output to the unbalanced amount determination unit 67. The unbalanced position detection unit 66 calculates the angle in the unbalanced direction from the signal indicating the position of the marker 52a input from the proximity switch 55, and outputs the unbalanced position signal to the water injection control unit 68.

When a signal indicating an unbalanced amount and an unbalanced position is input from the unbalanced amount determination unit 67 and the unbalanced position detection unit 66, the water injection control unit 68 supplies water to any baffle 8 in the dehydration tank 2. And its water supply amount is determined based on the pre-stored control program. Then, the selected water supply valves 31a, 31b, 31c are opened, and the injection of the adjusting water is started. When an imbalance occurs in the dehydration tank 2, water is injected from the water injection nozzles 30a, 30b, 30c selected based on the calculation of the unbalance amount to the water guides 5a, 5b, 5c of the water receiving ring unit 5. When the imbalance is resolved by the baffle 8, the injection of the adjusting water is stopped.

In the water injection control unit 68, for example, as shown in FIG. 4, the laundry mass D (X), which is a factor of imbalance, is between the baffle 8 (A) and the baffle 8 (C) of the dehydration tank 2. If it is, the baffle 8 (B) is controlled to supply the adjusting water. Further, when the lump D (Y) of the laundry is in the vicinity of the baffle 8 (B), control is performed so that the adjusting water is supplied to both the baffle 8 (A) and the baffle 8 (C).

As described above, in the washing machine 1 of the present embodiment, the pulsator 4 is arranged on the bottom portion 2c, and the dehydration tank 2 in which a plurality of water passage holes 2t are formed on the inner peripheral surface 2a1 thereof, and the inner peripheral surface 2a1 of the dehydration tank 2. It is provided with three or more baffles 8 arranged at equal intervals in the circumferential direction and a water injection device 30 capable of individually injecting adjusted water into each baffle 8, and the inside of the baffle 8 is provided from the outer peripheral side wall thereof. A water receiving plate 85 projecting inward in the radial direction is formed, and the baffle 8 is arranged above the water receiving plate 85, and is arranged below the water receiving plate 85 and the water storage space 8Ta for storing the adjusted water. It has a drainage space 8Tb for draining the regulated water flowing out from the water storage space 8Ta, and the circumferential length of the water storage space 8Ta is formed to be longer than the circumferential length of the drainage space 8Tb. The inner peripheral surface has an inclined surface A that is inclined so as to be arranged radially outward as it goes downward, and water passage holes 2t are arranged in both sides of the drainage space 8Tb in the dehydration tank 2 in the circumferential direction.

With such a configuration, even when the baffle 8 is widened in the circumferential direction, it has an inclined surface A that is inclined so as to be arranged radially outward as the inner peripheral surface of the water storage space 8Ta advances downward, so that it is dehydrated. Sometimes the water dehydrated from the laundry in the dehydration tub 2 is guided to the lower part of the dehydration tub 2. Then, since the water passage hole 2t is arranged below the water storage space 8Ta, the water dehydrated from the laundry is efficiently drained to the outside of the dehydration tank 2. Thereby, dehydration can be smoothly performed at the time of dehydration. Further, since the water dehydrated from the laundry is concentrated and drained from the lower part of the dehydration tank 2, the drained water is less likely to collect between the outer tank 3 and the dehydration tank 2, and the drainage of the outer tank 3 is smoothly performed. Can lead to a hole.

As described above, in the washing machine 1 of the present embodiment, the opening area of the water passage holes 2t formed in both sides of the drainage space 8Tb in the dehydration tub 2 gradually decreases from the upper side to the lower side.

With such a configuration, the opening area of the water passage holes 2t formed in both sides of the drainage space 8Tb in the dehydration tank 2 in the circumferential direction becomes smaller from the upper side to the lower side, so that the water can be drained more smoothly during dehydration. be able to.

(Second Embodiment)
The difference between the vertical washing machine according to the present embodiment and the vertical washing machine according to the first embodiment is the shape of the inner peripheral surface of the baffle 8. In the configuration of the vertical washing machine according to the present embodiment, the details of the parts similar to those of the vertical washing machine according to the first embodiment will be omitted.

7 (a) is a view of the baffle 8 formed on the inner peripheral surface 2a1 of the dehydration tub 2 of the washing machine according to the second embodiment, and FIG. 7 (b) is a view of FIG. 7 (b). (A) is _a cross-sectional view taken along the line a1 _- a1, FIG. 7 (c) is a cross-sectional view taken along the line _a2 - _a2 of FIG. 7 (a), and FIG. 7 (d) is a cross-sectional view taken along the line a1-2. It is sectional drawing in the a3 _{- a3} line of (a).

As shown in FIGS. 7 (b) and 7 (c), the inner peripheral surface of the water storage space 8Ta is formed on an inclined surface A that is inclined so as to be arranged radially outward from the upper end to the lower end. Further, as shown in FIGS. 7A and 7D, a diversion portion 8Tc protruding inward of the dehydration tank 2 is formed in the vicinity of the lower end portion of the inner peripheral surface of the water storage space 8Ta. The width of the diversion portion 8Tc along the horizontal direction becomes wider from the upper side to the lower side. Therefore, the water flowing from the upper side to the lower side along the inner peripheral surface of the water storage space 8Ta is divided left and right at the upper end of the diversion portion 8Tc and flows toward both sides in the circumferential direction of the drainage space 8Tb.

As described above, in the washing machine of the present embodiment, a diversion portion 8Tc that divides the water flow toward both sides in the circumferential direction of the drainage space 8Tb is formed in the vicinity of the lower end portion of the inner peripheral surface of the water storage space 8Ta.

With such a configuration, since the diversion portion 8Tc that diverts the water flow toward both sides in the circumferential direction of the drainage space 8Tb is formed near the lower end portion of the inner peripheral surface of the water storage space 8Ta, the water is dehydrated from the laundry. The water can be guided to the water passage hole 2t arranged below the water storage space 8Ta, and can be drained more smoothly.

(Third Embodiment)
The vertical washing machine according to the present embodiment is different from the vertical washing machine according to the first embodiment in that a gap is formed between the inner peripheral surface 2a1 of the dehydration tub 2 and the baffle 8. be. In the configuration of the vertical washing machine according to the present embodiment, the details of the parts similar to those of the vertical washing machine according to the first embodiment will be omitted.

FIG. 8A is a view of the baffle 8 formed on the inner peripheral surface 2a1 of the dehydration tub 2 of the washing machine according to the third embodiment as viewed from the inner peripheral side, and FIG. 8B is a dehydration tub. 2 is a schematic diagram.

The inner peripheral surface of the water storage space 8Ta is formed on an inclined surface A that is inclined so as to be arranged radially outward from the upper end to the lower end. As shown in FIG. 8B, a gap is formed between the inner peripheral surface 2a1 of the dehydration tank 2 and the back surface of the baffle 8 (the radial outer surface of the baffle 8). Therefore, the water dehydrated from the laundry in the dehydration tub 2 at the time of dehydration can pass through the gap between the inner peripheral surface 2a1 of the dehydration tub 2 and the back surface of the baffle 8.

As shown in FIGS. 8A and 8B, a plurality of water passage holes 2t are arranged on the inner peripheral surface 2a1 of the dehydration tank 2 at a portion facing the back surface of the baffle 8. As described above, in the present embodiment, on the inner peripheral surface 2a1 of the dehydration tank 2, a plurality of water passage holes 2t are arranged in a portion hidden by the water storage space 8Ta of the baffle 8. Therefore, the water dehydrated from the laundry in the dehydration tub 2 at the time of dehydration wraps around from the left and right ends of the water storage space 8Ta of the baffle 8 to the back surface side, and reaches the inner peripheral surface 2a1 of the dehydration tub 2 and the back surface of the baffle 8. After passing through the gap between the two, the water is drained from the water passage hole 2t to the outside of the dehydration tank 2.

As described above, in the washing machine of the present embodiment, a gap is formed between the inner peripheral surface 2a1 of the dehydration tub 2 and the back surface of the baffle 8, and the inner peripheral surface 2a1 of the dehydration tub 2 is formed with the back surface of the baffle 8. A water passage hole 2t is arranged in the facing portion.

With such a configuration, the water dehydrated from the laundry in the dehydration tub 2 during dehydration wraps around from the left and right ends of the baffle 8 to the back surface side, and the inner peripheral surfaces 2a1 and the baffle 8 of the dehydration tub 2 It passes through the gap between the back surface and is efficiently drained from the water passage hole 2t to the outside of the dehydration tank 2.

Although the embodiment of the present invention has been described above, the configuration of the present embodiment is not limited to the above-mentioned one, and various modifications are possible.

For example, in the first to third embodiments, the entire inner peripheral surface of the water storage space 8Ta is an inclined surface A that is inclined so as to be arranged radially outward as it goes downward, but inside the water storage space 8Ta. The inclined surface A may be inclined so that only a part of the peripheral surface is arranged radially outward as it goes downward.

In the first to third embodiments, the opening ratio of the water passage holes 2t formed in both sides of the drainage space 8Tb in the dehydration tank 2 decreases from the upper side to the lower side, but is not limited thereto. For example, the opening ratio of the water passage holes 2t formed in both sides of the drainage space 8Tb in the dehydration tank 2 may be constant over the entire area. In the first to third embodiments, the opening area, number, and arrangement of the water passage holes 2t formed on the inner peripheral surface of the dehydration tank 2 are arbitrary.

In the first to third embodiments, three baffles 8 are provided, and a water receiving ring unit 5 having three water gutters 5a, 5b, 5c for injecting water into the three baffles 8 is provided. However, the configuration may be such that three or more baffles 8 are provided, and each baffle 8 is provided with a water injection device capable of individually injecting adjusted water.

In the third embodiment, the description of the support structure of the baffle 8 with respect to the inner peripheral surface 2a1 of the dehydration tank 2 is omitted, but the structure is such that a gap is formed between the inner peripheral surface 2a1 of the dehydration tank 2 and the baffle 8. If so, the support structure described above is optional.

In the first to third embodiments, the inner peripheral side wall of the baffle 8 has a protruding wall portion 82 protruding inward in the radial direction, and the radial inner end portion of the water receiving plate 85 is inside the protruding wall portion 82. Placed in, but not limited to. For example, the inner peripheral side wall of the baffle 8 does not have to have a protruding wall portion 82 protruding inward in the radial direction.

In the above 1st to 3rd embodiments, an example of the shape of the baffle 8 is shown, but the present invention is not limited thereto. The shape of the baffle 8, the shape of the water storage space 8Ta and the shape of the drainage space 8Tb are arbitrary, and may be, for example, an upward spreading shape or a downward spreading shape.

In the above 1st to 3rd embodiments, an example of the shape of the water receiving plate 85 is shown, but the present invention is not limited thereto. The position (vertical height) and radial length of the water receiving plate 85 are arbitrary.

Other configurations can be variously modified without departing from the spirit of the present invention.

1 Washing machine 2 Dewatering tank 2c Bottom of dewatering tank 2t Water flow hole 4 Pulsator 8 Baffle 8Ta Water storage space 8Tb Drainage space 8Tc Divided part 30 Water injection device 85 Water receiving plate A Inclined surface

Claims (4)

A dehydration tank in which a pulsator is placed at the bottom and multiple water passage holes are formed on the inner peripheral surface of the pulsator.
Three or more baffles arranged at equal intervals in the circumferential direction with respect to the inner peripheral surface of the dehydration tank, and
Each baffle is equipped with a water injection device that can inject adjusted water individually.
Inside the baffle, a water receiving plate is formed so as to project radially inward from the outer peripheral side wall thereof.
The baffle is
A water storage space that is located above the water receiving plate and stores regulated water,
It is arranged below the water receiving plate and has a drainage space for draining the regulated water flowing out of the water storage space.
The circumferential length of the water storage space is formed to be longer than the circumferential length of the drainage space.
The inner peripheral surface of the water storage space has an inclined surface that is inclined so as to be arranged radially outward as it goes downward, and also has an inclined surface.
A washing machine characterized in that the water passage holes are arranged in both sides of the drainage space in the circumferential direction in the dehydration tub. The washing machine according to claim 1, wherein a diversion portion for diversion of the water flow is formed in the vicinity of the lower end portion of the inner peripheral surface of the water storage space toward both sides in the circumferential direction of the drainage space. The washing machine according to claim 1 or 2, wherein the opening area of the water passage holes formed in both sides of the drainage space in the dehydration tub decreases from the upper side to the lower side. A gap is formed between the inner peripheral surface of the dehydration tank and the back surface of the baffle, and at the same time, a gap is formed.
The washing machine according to any one of claims 1 to 3, wherein the water passage hole is arranged in a portion of the inner peripheral surface of the dehydration tub facing the back surface of the baffle.

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