JP4793469B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine that performs washing by spraying washing water that has risen in a circulating water channel formed on an inner wall of a washing tub from the top of the washing tub.

  Conventionally, this type of washing machine has a cover member fixed to the inner wall of the washing tub to form a circulating water channel, and from the pump chamber that houses the lower blades of the pulsator by the rotation of the pulsator disposed on the inner bottom surface of the washing tub. The washing water is configured to rise in the circulation channel and to spray water from the upper part of the washing tub (see, for example, Patent Document 1).

  That is, as shown in FIGS. 8 (a) and 8 (b), the washing and dewatering tub 1 fixes the fluid balancer 3 in which the internal fluid (saline solution) 2 is sealed at the top and the circulation channel cover 4 to the inner wall. Thus, the circulating water channel 5 is formed, and the upper opening 6 is provided in the upper part of the circulating water channel 5.

  The upper opening 6 is formed by the fluid balancer 3 and the circulating water channel cover 4, and is a slit-like opening that is continuous in the horizontal direction. The intermediate opening 7 is provided below the upper opening 6, and the area of the opening of the intermediate opening 7 is smaller than the area of the opening of the upper opening 6.

  The operation in the above configuration will be described. When the pulsator is rotated in the washing process, the washing water rises from the pump chamber that houses the lower blades of the pulsator, and is discharged from the upper part of the washing and dewatering tank 1 through the upper opening 6. At this time, since the upper opening 6 is formed into a slit-like opening that is continuous in the horizontal direction, the washing water is poured into a thin film on the laundry.

  Further, by providing the intermediate opening 7, the head of the pump chamber is not required by the height difference between the upper opening 6 and the intermediate opening 7, and even if the water level surface of the washing and dewatering tub 1 is low, washing is performed from the intermediate opening 7. Sufficient water can be sprayed.

JP-A-6-296794

  However, in such a conventional configuration, the intermediate opening 7 is only opened in the middle of the circulation water channel 5, and the washing water does not spread during washing at a low water level, and only covers a part of the laundry. There was a problem that sufficient cleaning performance could not be obtained.

  Moreover, since the intermediate opening 7 is below the upper opening 6 and is submerged during washing at high and medium water levels, foreign substances such as coins enter the circulating water channel 5 from the intermediate opening 7. There was a problem that the water flowed out from there to a drain port (not shown), clogged with the drain port, and could not be drained. Further, when the dropped coin is caught by the drain valve, the drain valve (not shown) is left open, causing a problem that water leaks from the drain valve and the washing water cannot be stored.

  The present invention solves the above-described conventional problems, arranges the flow of washing water in the circulation channel, allows the washing water to be rectified and discharged from the intermediate opening, and evenly sprays the laundry, washing performance It aims to improve.

In order to achieve the above object, the washing machine has a pump chamber in which a lower blade of a pulsator rotatably disposed on an inner bottom surface of a washing tub is accommodated in a pump chamber, and a cover member is fixed to the inner wall of the washing tub. A circulation channel from the room to the upper part of the washing tub is constructed, and an upper opening is provided at the upper part of the circulation channel so as to discharge the washing water toward the inside of the washing tub. A guide plate that divides and has at least one of the internal water channels provided with an intermediate opening at a position between the upper opening and the pump chamber, and discharges the washing water into the interior of the washing tub at the upper part inside the intermediate opening. The middle opening is provided with both sides extending from the middle opening toward the center of the washing tub in a substantially fan shape, the middle opening is sized so that the smallest coin cannot enter, and the width of the internal water channel is less than the diameter of the smallest coin it is obtained by the.

As a result, the flow of the wash water in the circulation channel can be adjusted, the wash water can be rectified and discharged from the intermediate opening, and can be applied evenly to the laundry, improving the washing performance. In addition, foreign substances such as coins can be prevented from entering the circulating water channel from the intermediate opening, and it is possible to prevent clogging of the drainage port, water leakage from the drainage valve, and the like, thereby improving safety .

The washing machine of the present invention can regulate the flow of the washing water in the circulation channel, can rectify and discharge the washing water from the intermediate opening, can be applied evenly to the laundry, and has a washing performance. In addition to being able to improve, it is possible to prevent foreign substances such as coins from entering the circulating water channel from the intermediate opening, and it is possible to prevent clogging of the drain port, water leakage from the drain valve, etc., and improve safety Can

1 is a longitudinal sectional view of a washing machine according to a first embodiment of the present invention. The main part enlarged exploded perspective view of the washing machine Main section enlarged view of the washing machine Longitudinal sectional view of the washing machine according to Embodiment 2 of the present invention (A) AA line enlarged sectional view of the washing machine (b) BB line enlarged sectional view of the washing machine Main section enlarged view of the washing machine An enlarged front view of the main part of the washing machine (A) Front view of main part of conventional washing machine (b) Cross-sectional view of main part of conventional washing machine

According to a first aspect of the present invention, there is provided a pulsator rotatably disposed on an inner bottom surface of a washing tub, a pump chamber that houses a lower blade of the pulsator, a cover member fixed to an inner wall of the washing tub, and the pump chamber A circulation water channel extending from the top of the washing tub to the upper part of the washing tub, and an upper opening provided at the upper part of the circulation water channel so as to discharge the washing water toward the inside of the washing tub. The internal water channel is divided, and at least one of the internal water channels is provided with an intermediate opening at a position between the upper opening and the pump chamber, and the interior of the washing tub is formed at an upper portion inside the intermediate opening. A guide plate for discharging washing water is provided, and the intermediate opening is provided with both side surfaces extending from the intermediate opening toward the center of the washing tub in a substantially fan shape, and the intermediate opening has a size that does not allow a minimum coin to enter. And said internal waterway By the lateral width which is less than the minimum coin diameter, you can adjust the flow of the washing water in the water circulation passage, and can be discharged by rectifying the wash water from the intermediate opening and lower low water etc. When washing at the water level, the rectified washing water can be spread in a fan-like shape , evenly applied to the laundry, improving the washing performance, and foreign substances such as coins from the intermediate opening can be circulated in the circulation channel It is possible to prevent intrusion into the interior, prevent clogging of the drain outlet, water leakage from the drain valve, etc., and improve safety .

According to a second invention, in the first invention, the intermediate opening is provided between the middle water level and the low water level, so that the washing water is reliably circulated even in the case of washing with a low water level below the low water level. Cleaning performance can be improved.

  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.

(Embodiment 1)
As shown in FIG. 1, the washing machine outer frame 8 suspends a water receiving tub 10 by means of a hanging rod 9, and a washing / dehydrating tub 11 is rotatably disposed in the water receiving tub 10. A pulsator 12 is rotatably disposed at the inner bottom of the washing and dewatering tank 11, and a fluid balancer 13 for reducing vibration during dehydration is fixed to the upper part. A lower blade 14 is integrally provided on the lower surface of the pulsator 12, and the lower blade 14 is accommodated in a first pump chamber 15 and a second pump chamber (pump chamber) 16.

  A first circulating water channel cover 17 and a second circulating water channel cover (cover member) 18 are fixed to the inner wall of the washing and dewatering tank 11, and the first pump chamber 15 and the second pump chamber 16 are interposed between the washing and dewatering tank 11. The 1st circulation water channel 19 and the 2nd circulation water channel (circulation water channel) 20 which reach the upper part of the washing and dewatering tank 11 are configured. A lint filter 21 is provided at the upper end of the first circulation channel cover 17.

  A motor 22 is attached to the lower surface of the water receiving tub 10, and the washing / dehydrating tub 11 or the pulsator 12 is driven via a V-belt 23 and a speed reduction mechanism 24. An upper frame 25 is attached to the upper part of the washing machine outer frame 8, and a lid 26 is provided on the upper frame 25 so as to be freely opened and closed.

  The water supply valve 27 supplies tap water or the like into the washing / dehydrating tub 11, and the drain valve 28 drains water in the washing / dehydrating tub 11. The control device 29 controls operations of the motor 22, the water supply valve 27, the drain valve 28, and the like, and sequentially controls a series of steps of washing, rinsing, and dewatering.

An upper opening 30 is provided in the upper part of the second circulation water channel 20 by an upper end portion of the second circulation water channel cover 18 and a concave portion 13 a provided on the bottom surface of the fluid balancer 13. An intermediate opening 31 is provided between the upper opening 30 and the second pump chamber 16 so as to discharge water. Here, the upper opening 30 is constituted by the bottom surface of the fluid balancer 13 and the upper end portion of the second circulating water channel cover 18.

  That is, as shown in FIGS. 2 and 3, the fluid balancer 13 is fitted into the upper opening 11a of the washing and dewatering tub 11 and fixed by screwing (not shown). Convex portions 32 are provided on the outer sides of the second circulating water channel 20 in the circumferential direction on the left and right sides of the upper end of the second circulating water channel cover 18 constituting the second circulating water channel 20. On the other hand, a concave portion 13a is provided on the bottom surface of the fluid balancer 13, a concave portion 33 is provided at a position corresponding to the top surface of the concave portion 13a, and the convex portion 32 is inserted into the concave portion 33 to fix the second circulating water channel cover 18. is doing.

  The convex portion 32 and the concave portion 33 have a shape that is longer in the circumferential direction than the radial direction of the washing and dewatering tub 11. The convex portion 32 is provided with a convex rib 32 a for adjusting fitting with the concave portion 33. Both sides 13b of the concave portion of the concave portion 13a are spread out in a substantially fan shape from the outside of the washing / dehydrating tub 11 toward the center, and the top surface of the concave portion 13a is formed by the horizontal top surface 13c on the outside of the washing / dehydrating tub 11. It is formed by an inclined top surface 13d whose inner side is inclined upward.

  The operation in the above configuration will be described. When the pulsator 12 is rotated during the washing process, the washing water rises from the first pump chamber 15 accommodating the lower blades 14 of the pulsator 12 through the first circulation water channel 19 and passes through the lint filter 21 from the upper part of the washing and dewatering tub 11. Discharged. At this time, lint generated by rotating the pulsator 12 is collected by the lint filter 21.

  On the other hand, the wash water rising through the second circulation water channel 20 is discharged into the washing and dewatering tub 11 from the upper opening 30. At this time, the washing water first collides with the horizontal top surface 13c of the concave portion 13a, and then spreads in a substantially fan shape along the both side surfaces 13b and the inclined top surface 13d of the concave portion, and in the vicinity of the central portion of the washing and dewatering tub 11 Is poured.

  Thus, since wash water is poured evenly into the laundry 34, the washing performance can be improved.

  Moreover, since the convex part 32 and the recessed part 33 are provided in the outer side of the circumferential direction rather than the 2nd circulation water channel 20, since a water channel can be formed, without changing the cross-sectional shape of the 2nd circulation water channel 20, washing water The flow can be rectified without changing the flow.

  Moreover, if the convex part 32 and the recessed part 33 are made longer in the radial direction than the circumferential direction, the concave part side surfaces 13b cannot be made substantially fan-shaped by the amount of the insertion part (the convex part 32 and the concave part 33). The spread of the washing water becomes small, and the washing water is not sufficiently poured into the laundry. However, since the convex portion 32 and the concave portion 33 have a shape that is longer in the circumferential direction than the radial direction of the washing / dehydrating tub 11, they are substantially fan-shaped toward the center from the outside of the washing / dehydrating tub 11 on both side surfaces 13b. Since the shape which spreads can be started from the outer peripheral surface of the 2nd circulation water channel 20, the substantially fan shape of discharged washing water can be maintained.

  Furthermore, since the second circulation channel cover 18 does not cover the inner surface of the fluid balancer 13, the volume of the second circulation channel cover 18 itself can be reduced, the cost can be reduced, and the volume of the fluid balancer 13 can be realized. Therefore, the straightening force of the fluid balancer 13 can be improved.

As described above, according to the present embodiment, by simplifying the configuration of the second circulation channel cover 18, the cost of the second circulation channel cover 18 can be reduced and the assembly can be easily performed. It is possible to improve the straightening force and reduce vibration during dehydration.

  Further, the second circulation channel cover 18 can be fixed to the fluid balancer 13 without reducing the cross-sectional area inside the second circulation channel 20, and the shape of the washing water discharged from the upper opening 30 is substantially fan-shaped. Since the washing water spreads in a substantially fan shape and is poured uniformly onto the laundry, the washing performance can be improved.

  In the present embodiment, each of the first circulation channel 19 and the second circulation channel 20 is provided in the washing and dewatering tub 11, but a plurality of first circulation channels 19 or a plurality of second circulation channels 20. The same effect can be obtained.

(Embodiment 2)
As shown in FIG. 4, the washing and dewatering tub (washing tub) 11 is rotatably disposed in the water receiving tub 10, and the first circulation channel cover 17 and the second circulation channel cover (cover member) 35 are provided on the inner wall. The first circulating water channel 19 and the second circulating water channel (circulating water channel) 36 extending from the first pump chamber 15 and the second pump chamber 16 to the upper portion of the washing and dewatering tank 11 are fixed between the washing and dewatering tank 11. Is configured. A lint filter 21 is provided at the upper end of the first circulation channel cover 17.

  An upper opening 37 is provided at the upper part of the second circulating water channel 36 by an upper end portion of the second circulating water channel cover 35 and a concave portion 13 a provided on the bottom surface of the fluid balancer 13, and washing is performed toward the inside of the washing / dehydrating tub 11. An intermediate opening 38 is provided between the upper opening 37 and the second pump chamber 16 so as to discharge water.

  As shown in FIG. 5, the second circulating water channel cover 35 is provided with two vertical ribs 39 toward the inner wall of the washing and dewatering tub 11 inside the second circulating water channel 36. As shown in FIG. 4, the second pump chamber 16 is continuously provided from the vicinity of the second pump chamber 16 to the intermediate opening 38. By the vertical rib 39, the inside of the second circulation water channel 36 is divided into three, that is, a first internal water channel 40a, a second internal water channel 40b, and a third internal water channel 40c. Of these three internal water channels, the central second internal water channel 40 communicates with the intermediate opening 38.

  In addition, a substantially J-shaped guide plate 41 that discharges the washing water into the washing / dehydrating tub 11 is provided in the upper part inside the intermediate opening 38. Further, as shown in FIG. 7, the both side surfaces 38 a of the intermediate opening 38 spread from the outside of the washing / dehydrating tub 11 toward the center in a substantially fan shape.

  Further, the interval between the two vertical ribs 39 (the horizontal width of the second internal water channel 40b) is less than the diameter of the smallest coin (in Japan, 1 mm coin is 20 mm). Further, in FIG. 6, a is an extremely low water level, b is a low water level, c is a medium water level (high water level is not shown), and the intermediate opening 38 is provided between the medium water level c and the low water level b. . Other configurations are the same as those of the first embodiment, and the same reference numerals are given and description thereof is omitted.

  The operation in the above configuration will be described. When the pulsator 12 is rotated during the washing process, the washing water rises from the first pump chamber 15 accommodating the lower blades 14 of the pulsator 12 through the first circulation water channel 19 and passes through the lint filter 21 from the upper part of the washing and dewatering tub 11. Discharged. At this time, lint generated by rotating the pulsator 12 is collected by the lint filter 21.

On the other hand, the wash water sent from the second pump chamber 16 into the second circulation water channel 36 is divided into three, a first internal water channel 40a, a second internal water channel 40b, and a third internal water channel 40c. Among them, the washing water that has risen through the second internal water channel 40b collides with the substantially J-shaped guide plate 41, spreads in a substantially fan shape along both side surfaces 38a that spread in a substantially fan shape, and the washing and dewatering tub 11 It is poured to the vicinity of the center of.

  Also, the washing water passing through the first internal water channel 40a and the third internal water channel 40c merges after passing through the substantially J-shaped guide plate 41 of the second internal water channel 40b, rises to the upper opening 30, and is It is poured into the dehydration tank 11.

  Thus, according to the present embodiment, since the second internal water passage 40b in the second circulation water passage 36 is provided from the vicinity of the second pump chamber 16, the wash water rising in the second internal water passage 40b is rectified. Thus, the turbulent flow of the washing water in the vicinity of the intermediate opening 38 can be prevented, and the discharge of the washing water from the intermediate opening 38 can be rectified.

  In addition, the substantially J-shaped guide plate 41 and the side surfaces 38a that spread in a substantially fan shape allow the rectified washing water to spread in a substantially fan shape and be applied to the laundry evenly when washing at a low water level such as a low water level. Therefore, the cleaning performance can be improved.

  In addition, since the interval between the two vertical ribs 39 is less than the diameter of the minimum coin, foreign matter such as coins can be prevented from entering the second circulation water channel 36 from the intermediate opening 38, so that the drainage port is clogged. Can be prevented and safety can be improved.

  Further, in the conventional washing at a low water level or lower, there is a problem that the washing water cannot be poured from the upper opening 30. In this embodiment, the intermediate opening 38 is provided between the middle water level c and the low water level b. Therefore, the washing water is poured into the laundry with the sprinkling of the washing water from the upper opening 30 in the washing at the high water level and the middle water level, and the washing water from the middle opening 38 at the low water level and the extremely low water level. Therefore, it is possible to reliably circulate the wash water and improve the cleaning performance.

  In the present embodiment, one each of the first circulation water channel 19 and the second circulation water channel 36 is provided in the washing and dewatering tub 11, but the plurality of first circulation water channels 19 or the plurality of second circulation water channels 36 are provided. The same effect can be obtained.

  In the present embodiment, the inside of the second circulating water channel 36 is divided into three parts, a first internal water channel 40a, a second internal water channel 40b, and a third internal water channel 40c, and one intermediate opening 38 is provided. The number of internal water channels may be two or four or more, and the number of intermediate openings may be two or more in accordance with the number of internal water channels, and the same effect can be obtained.

  Further, in this embodiment, the first circulation channel cover 17 and the second circulation channel cover 35 are fixed to the inner wall of the washing / dehydrating tub 11 rotatably disposed in the water receiving tub 10, Although the 1st circulation water channel 19 and the 2nd circulation water channel 36 are constituted in between, even if it is a washing tub of a 2 tank type washing machine, it cannot be overemphasized that the same operation effect as the above-mentioned example is obtained. Nor.

DESCRIPTION OF SYMBOLS 11 Washing and dewatering tank 12 Pulsator 13 Fluid balancer 13a Concave part 13b Concave part both sides 14 Lower blade 16 Second pump chamber (pump chamber)
18 Second circulation channel cover (cover member)
20 Second circulation channel (circulation channel)
30 Upper opening

Claims (2)

A pulsator that is rotatably arranged on the inner bottom surface of the washing tub, a pump chamber that houses the lower blades of the pulsator, and a cover member fixed to the inner wall of the washing tub. And an upper opening provided to discharge washing water toward the inside of the washing tub at the top of the circulation water channel, and divide the inside of the circulation water channel into a plurality of internal water channels, At least one of the internal water channels is provided with an intermediate opening at a position between the upper opening and the pump chamber, and the washing water is discharged into the washing tub at an upper part inside the intermediate opening. In addition to providing a guide plate, the intermediate opening is provided with both side surfaces extending in a substantially fan shape from the intermediate opening toward the center of the washing tub, and the intermediate opening is sized such that a minimum coin cannot enter, Width is minimum hardness Less than the diameter and the washing machine. Intermediate opening washing machine according to claim 1, wherein provided between the middle level and low level.

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