JP2005065999A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED To reduce washing unevenness by uniformly sprinkling washing water from a discharge port on clothes even when the water level is set relatively low and the level of washing water discharged from above the circulation channel is low. A washing machine capable of improving the washing performance is realized.
SOLUTION: A pulsator 2 rotatably disposed at the bottom of a washing tub 1, a pump chamber 14 formed on the back side of the pulsator 2, and a circulating water channel for feeding water from the pump chamber 14 toward the upper side of the washing tub 1 side wall. 12 and the circulating water channel 12 is provided with a guide wall portion 11 having a plurality of openings 21 for spraying water into the washing tub 1, and the guide wall portion 11 has a water supply wall 22 provided therein. The water supply wall 22 is composed of an inclined portion 23 that gradually narrows upward in the circulating water channel 12 from the middle of the trunk portion and a straight portion 24 that extends upward in the width of the opening.
[Selection] Figure 1

Description

  The present invention relates to a washing machine that uses a circulating water channel provided in a washing tub to wash while washing water is applied to clothes from the upper part of the washing tub.

  Conventionally, this type of washing machine is configured as shown in FIG. 5 (see, for example, Patent Document 1).

  Hereinafter, the configuration will be described.

  FIG. 5 shows a conventional washing machine described in Patent Document 1. As shown in FIG. As shown in FIG. 5, the washing tub 1 has a pulsator 2 rotatably disposed on the bottom surface, and a mounting flange 3 is mounted on the back surface of the bottom surface. A fluid balancer 4 enclosing a liquid is fixed to the upper part of the washing tub 1. The water tub 5 encloses the washing tub 1, and a substrate 6 is attached to the outer bottom portion, and a motor 8 that drives the pulsator 2 via the drive mechanism portion 7 is disposed on the substrate 6. Further, the water tank 5 is supported by vibration isolation from the upper corners of the outer frame 9 via the suspension 10.

A circulation water channel 12 included in a guide wall portion 11 opened upward is disposed on the inner side surface of the washing tub 1, and the washing water on the back surface of the pulsator 2 is moved by the rotation of the pulsator 2 to the back blade 13 of the pulsator 2. The pump chamber 14 formed on the outer periphery passes through the circulating water channel 12 and discharges into the washing tub 1 from the discharge port 15 provided in the upper part of the circulating water channel 12.
Japanese Patent Laid-Open No. 10-033833

  However, in the conventional configuration, the amount of washing water discharged from the discharge port 15 at the upper part of the circulation channel 12 is the amount of movement of the clothes in the washing tub 1 depending on the type and amount of clothes, the discharge port 15 and the water surface. It is greatly influenced by the positional relationship and the shape of the discharge port 15, and washing water cannot be sprinkled uniformly on the clothes in the washing tub 1 at all times, and washing water, bubbles, etc. containing detergent are scattered outside the washing tub 1. Or had a problem of increasing the unevenness of washing.

  The present invention solves the above-described conventional problems, and even when the water level is set to be relatively low and the level of the wash water discharged from above the circulation channel is low, the wash water from the discharge port is evenly distributed to the clothing. The aim is to improve washing performance by sprinkling and reducing uneven washing.

  In order to solve the above-described conventional problems, the washing machine of the present invention includes a washing tub, a pulsator rotatably disposed at the bottom of the washing tub, a pump chamber formed on the back side of the pulsator, and the pump A guide wall portion configured to form a circulating water channel that feeds water from the chamber toward the upper side of the side wall of the washing tub and sprays water toward the center of the washing tub, and the guide wall portion is configured to supply water. A wall is provided, and the water supply wall includes a first inclined portion that gradually narrows upward in the circulation channel from the middle of the trunk portion, and a straight portion that extends upward with the width of the opening. It is a thing.

  As a result, even when the water level is set to be relatively low and the level of the wash water discharged from above the circulation channel is low, the wash water from the discharge port can be evenly sprinkled on the clothing, thus reducing washing unevenness. Thus, the cleaning performance is improved.

  In the washing machine of the present invention, even when the water level is set to be relatively low and the level of the washing water discharged from above the circulating water channel is low, the washing water from the discharge port is uniformly sprinkled on the clothing, and the washing unevenness The cleaning performance can be improved.

  The first invention is a washing tub, a pulsator rotatably disposed at the bottom of the washing tub, a pump chamber formed on the back side of the pulsator, and from the pump chamber toward the upper side of the side wall of the washing tub. A water supply wall is provided, and a water supply wall is provided in the guide wall part, and a water supply wall is provided inside the water supply wall. The water level is set to be relatively low by including a first inclined portion that gradually narrows upward in the circulation channel from the middle of the trunk portion and a straight portion that extends upward with the width of the opening. Even when the level of the wash water discharged from above the circulation channel is low, the wash water from the discharge port can be uniformly sprinkled on the clothing, so that washing unevenness can be reduced and washing performance can be improved. .

  According to a second aspect of the washing machine of the first aspect of the invention, since the straight portion has a notch at both ends of the opening, the washing water can be discharged at a wide angle. Regardless of the size of the movement of clothing, such as when washing a lot, washing water can be sprinkled evenly on clothing in the washing tub over a wide range from the inner peripheral edge of the washing tub every time the pulsator is reversed. Generation | occurrence | production of the part which water splashes on clothing and the part which does not splash can be prevented, and generation | occurrence | production of uneven washing can be prevented.

  According to a third aspect of the present invention, in the washing machine of the first or second aspect, the opening at the upper end of the guide wall is wider than the other openings, and the water supply wall is located above the circulation channel from the middle of the trunk. A first inclined portion that gradually narrows, a straight portion that extends upward with the width of the opening, and a second portion that gradually widens from the upper portion of the straight portion to the vicinity of both ends of the opening at the upper end of the guide wall portion. Since the washing water is discharged from the opening at the upper end in a wide angle, the inner peripheral end of the washing tub can be used regardless of the movement of the clothing, such as when washing a lot of bulky clothing. Since the washing water can be sprinkled evenly over the clothes in the washing basin over a wide range every time the pulsator is reversed, it is possible to prevent the occurrence of the parts where the discharged washing water does not hang on the clothes, Preventing uneven washing Door can be.

  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. The same structure as the conventional one is denoted by the same reference numeral, and the description thereof is omitted.

(Embodiment 1)
1 is a side sectional view of a washing machine according to Embodiment 1 of the present invention, FIG. 2 is an operation time chart of a washing process, FIG. 3 (a) is a partial view of a washing tub, and FIG. 3 (b) is a back surface of a circulation channel. 4 and 4 are cross-sectional views in the vicinity of the opening. In FIG. 1, a drain valve 16 drains washing water in the water tank 5, and a water supply valve 17 supplies water into the washing tank 1. The control device 18 controls the motor 8, the drain valve 16, the water supply valve 17 and the like to sequentially control a series of steps of washing, rinsing, and dehydration.

  A circulation water channel 12 is formed on the side surface of the washing tub 1 from the pump chamber 14 formed on the outer periphery of the back blade 13 of the pulsator 2 to the vicinity of the fluid balancer 4, and the back blade 13 of the pulsator 2 is formed in the circulation water channel 12. A first discharge port 20 (opening portion) that discharges washing water from the upper part of the washing tub 1 by a pump-up action, and a plurality of discharge ports 21 (opening portions) positioned below the first discharge port 20 And are provided.

  The operation in the above configuration will be described. As shown in FIG. 2, the control device 18 operates the water supply valve 17 to the water level about ½a of the predetermined water level a of the laundry put in the washing tub 1 to supply water. When the water level detected by the water level detection means 19 reaches 1 / 2a, the operation of the water supply valve 17 is stopped. The detergent concentration of the washing water at that time is approximately twice the detergent concentration at the predetermined water level. With this washing water having a high detergent concentration, the motor 8 is driven and the laundry is stirred by the pulsator 2 until a predetermined time (t1). Thereafter, the water supply valve 17 is operated again to supply water to a predetermined water level, and then a process of stirring the laundry at a predetermined detergent concentration (standard detergent concentration) is performed.

  At this time, when the water level in the washing and dewatering tub 1 is as low as a half water level (1 / 2a) of the predetermined water level a, the water on the back surface of the pulsator 2 passes through the circulation channel 12 by the rotation of the pulsator 2. Although it rises upward, since the first discharge port 20 is located at a much higher position with respect to the water level surface (1 / 2a), the amount of circulating water discharged from the first discharge port 20 is small and sometimes circulates. Water may not be discharged. However, since the plurality of discharge ports 21 are provided below the first discharge port 20, the circulating water can be discharged from the plurality of discharge ports 21.

  Here, the water pressure is reduced due to the presence of the plurality of discharge ports 21 and it becomes difficult to discharge the washing water. However, as shown in FIG. The first inclined portion 23 that gradually narrows upward and the straight portion 24 that extends upward in the width of the opening are used. Thereby, the pressure of the rise of the water in the circulation water channel 12 can be raised, and the discharge pressure from the several discharge port 21 provided below can be raised. Therefore, even when the water level is set low and the water level of the wash water discharged from above the circulation water channel 12 is low, the discharge pressure of the wash water discharged from the plurality of discharge ports 21 provided below can be secured. The washing water can be uniformly sprinkled on the clothes, and the washing performance can be improved by reducing uneven washing.

  In addition, at both ends of the discharge port 21, the straight portion 24 is provided with a cutout portion 25 corresponding to the width in the height direction of the discharge port 21.

  As a result, the washing water discharged from the discharge port 21 is discharged to a wide angle through the notch 25. Therefore, regardless of the movement of the clothing such as when washing a lot of bulky clothing, the washing water from the inner peripheral end of the washing tub. Since the washing water can be sprinkled evenly over the clothes in the washing tub over a wide range every time the pulsator 2 is reversed, it is possible to prevent the discharged washing water from hanging on the clothes and the parts not hanging on the clothes, Furthermore, it is possible to improve the cleaning performance by reducing the occurrence of uneven washing.

  Further, the discharge port 20 at the upper end of the guide wall portion 11 is wider than the other plurality of discharge ports 21, and the water supply wall 22 is a first slope gradually narrowing upward in the circulating water channel 12 from the middle of the trunk portion. A portion 23, a straight portion 24 extending upward with the width of the plurality of discharge ports 21, and a second inclined portion 26 gradually widening from the upper portion of the straight portion 24 to the vicinity of both ends of the discharge port 20 at the upper end of the guide wall portion Is provided.

  Thereby, when the water level is high, the discharge range of the wash water from the discharge port 20 can be expanded in the lateral direction, so that the wash water can be applied evenly and evenly to clothes floating on the water surface. Cleaning unevenness and cleaning performance can be improved.

  As described above, the washing machine according to the present invention uniformly sprinkles the washing water from the discharge port on the clothing even when the water level is set relatively low and the level of the washing water discharged from above the circulation channel is low. Since the washing performance can be improved by reducing the unevenness of washing, the washing machine uses the circulating water channel provided in the washing tub to wash the washing water while hanging it over the clothes. Useful as such.

Side sectional view of the washing machine according to Embodiment 1 of the present invention. Operation time chart of washing process of the washing machine (A) Partial view of the washing tub of the washing machine (b) Back view of the circulation channel of the washing machine Cross section near the opening Side sectional view of a conventional washing machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Washing tank 2 Pulsator 11 Guide wall part 12 Circulating water channel 14 Pump chamber 21 Discharge port (opening part)
22 Water supply wall 23 1st inclined part 24 Straight part

Claims (3)

A washing tub, a pulsator disposed rotatably at the bottom of the washing tub, a pump chamber formed on the back side of the pulsator, and a circulation channel for supplying water from the pump chamber toward the upper side wall of the washing tub And a guide wall portion having at least a plurality of openings formed to spray water toward the center of the washing tub, the guide wall portion having a water supply wall, and the water supply wall is circulated from the middle of the trunk portion. A washing machine comprising a first inclined portion that gradually narrows upward in the water channel and a straight portion that extends upward with the width of the opening. The washing machine according to claim 1, wherein the straight portion has a notch at both ends of the opening. The opening at the upper end of the guide wall is wider than the other openings, and the water supply wall has a first inclined part that gradually narrows upward in the circulation channel from the middle of the trunk part, and the width of the opening. The laundry according to claim 1 or 2, comprising a straight part extending upward and a second inclined part gradually widening from the upper part of the straight part to the vicinity of both ends of the opening at the upper end of the guide wall part. Machine.

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