JP2016097233A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine which prevents unevenness in washing and which improves washing performance by generating foam by discharge of a washing liquid.SOLUTION: A water passage cover 14 for forming a circulation water passage 10 in a watertight manner is integrally formed in a substantially T shape by a side surface cover part 15 in which an inner wall part of a washing and dewatering tub 7 is a vertically long shape, and an upper cover part 16 in which an upper part is a horizontally long shape. A central discharge port 11 is formed in a central part of the upper cover part 16, a left discharge port 12 is formed on the left side of the central discharge port 11, and a right discharge port 13 is formed on the right side, and a washing liquid is sprayed in the washing and dewatering tub 7 from the central discharge port 11, the left discharge port 12 and the right discharge port 13 via the circulation water passage 10 by the rotation of a pulsator 8. Thereby, in a washing step, laundry in the washing and dewatering tub 7 can be agitated while the washing liquid is sprayed evenly from above. Also, by generating foam and using the foam, while preventing unevenness in washing, washing performance can be improved by the generated foam.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a washing machine that performs washing, rinsing, and dehydration processes.

  Conventionally, in order to improve the washing performance, this type of washing machine circulates the washing liquid using a circulation channel installed in the washing and dehydrating tub, and wash while washing the washing liquid from the upper part of the washing and dehydrating tub. A configuration has been proposed (see, for example, Patent Document 1).

  FIG. 9 is a longitudinal sectional view of a conventional washing machine described in Patent Document 1. In FIG.

  In FIG. 9, the washing and dewatering tub 53 is supported in an anti-vibration manner in a main body 55 by a suspension 54. A plurality of circulation water channel covers 56 are attached to the inner surface of the washing and dewatering tank 53, and a plurality of independent circulation water channels 57 a and 57 b are formed between the washing and dewatering tank 53.

  Further, a blade 58 is integrally provided on the back surface of the pulsator 52, and a pump chamber 59 formed on the outer periphery of the blade 58 is communicated with the circulation water channels 57a and 57b. And the opening part 60 opened toward the inside of the washing and dewatering tank 53 is formed in the upper part of the circulating water channels 57a and 57b, and the water spray nozzle 61 is provided in the opening part 60 in the upper part of the circulating water channel 57b. A waste thread filter 62 is provided in the upper opening 60.

  The motor 63 drives the stirring blade 52 via the V belt 64 and the speed reduction mechanism 65. The water level sensor 66 is connected to the lower part of the water receiving tank 51 to detect the water levels a and b in the washing and dewatering tank 53 and inputs the output to the control device 67.

  With the above configuration, in the washing process, the stirring blade 52 rotates according to the rotation of the motor 63, and the laundry 73 and the washing liquid in the washing and dewatering tub 53 are stirred. On the other hand, the washing liquid between the blades 58 provided on the stirring blade 52 and the water receiving tank 51 is pushed out to the outside of the bottom of the water receiving tank 51 by the centrifugal force by the rotation of the blades 58, and sprinkles through the circulation water channels 57a and 57b. Water is intermittently sprinkled from the nozzle 61 and the waste thread filter 62 into the washing and dewatering tank 53 according to the rotation of the motor 63. As a result, a large amount of washing liquid is sprinkled on the laundry in the washing and dewatering tub 53 from above. 72 is a water supply valve, and 74 is a drain valve.

Japanese Patent Laid-Open No. 7-31785

  However, in the conventional configuration, the washing liquid is sprinkled in the washing and dewatering tub at two opposed openings, and one place is provided with a lint filter, so that substantially one sprinkling is provided. Only from the nozzle. For this reason, there has been a problem that the washing liquid cannot be uniformly sprinkled on the laundry in the washing and dewatering tub, and the washing unevenness is increased.

  The present invention solves the above-described conventional problems, and a plurality of discharge ports are provided in an upper part of a circulation water channel provided in the washing and dewatering tub, and the washing liquid is sprayed over a wide range with respect to the laundry in the washing and dewatering tub. Thus, an object of the present invention is to provide a washing machine that prevents washing unevenness and improves washing performance by improving foaming properties.

  In order to solve the above-described conventional problems, a washing machine of the present invention includes a main body, a water tank that is supported in an anti-vibration manner in the main body, a washing and dehydrating tank that is rotatably included in the water tank, and the washing machine. A pulsator rotatably disposed at the center inner bottom of the cum dewatering tank, a motor for rotating the pulsator and the washing / dehydrating tank, a water supply valve for supplying water to the water tank, and an inner wall of the washing / dehydrating tank Oppositely provided water channel cover that forms a circulating water channel, formed on the upper part of the water channel cover, discharge port for supplying washing liquid into the washing and dewatering tub, operation of the motor, water supply valve, etc. And a control means for controlling each process of washing, rinsing, and dewatering. The water channel cover is formed by a side cover and a horizontally long upper cover that is connected to the upper part of the side cover, and the discharge The outlet is It is obtained by a configuration in which a plurality formed in substantially the same height in the circumferential direction of the washing and dewatering tank over.

  As a result, in the washing process, the laundry in the washing and dewatering tub can be stirred while sprinkling the washing liquid evenly from above, so that washing unevenness can be prevented and the washing performance can be improved.

  The washing machine of the present invention can stir while washing the washing liquid uniformly from above on the laundry in the washing and dewatering tub, thus preventing washing unevenness and improving the lathering property. The performance can be improved.

1 is a longitudinal sectional view of a washing machine according to Embodiment 1 of the present invention. Cross section of the washing and dewatering tank of the washing machine Sectional view of the washing and dewatering tank of the washing machine as seen from the other direction Sectional view of the upper channel of the circulation channel of the washing machine An enlarged cross-sectional view of the main part of the upper waterway part of the circulation waterway of the washing machine The principal part expanded sectional view which looked at the upper channel part of the circulation channel of the washing machine from the upper part Sectional view of the upper cover of the circulation channel of the washing machine as seen from above The figure which shows the relationship between the discharge range from the circulation channel of the washing machine, and the laundry Vertical section of a conventional washing machine

  The first invention includes a main body, a water tub supported in an anti-vibration manner inside the main body, a washing and dewatering tub rotatably contained in the water tub, and a central inner bottom portion of the washing and dewatering tub. A disposed pulsator, a pump chamber formed at a position below the pulsator in the water tank, a blade integrally formed with the pulsator, and disposed in the pump chamber, the pulsator and the washing and washing unit A motor that rotationally drives the dewatering tub, a water supply valve that supplies water to the water tub, and a water channel that is provided on the inner wall of the washing and dehydrating tub and forms a circulation channel for circulating the washing liquid in the pump chamber to the washing and dewatering tub A cover, formed on the upper part of the water channel cover, controls the operation of the discharge port for supplying the washing liquid into the washing and dewatering tub, the motor, the water supply valve, etc., and controls each process of washing, rinsing and dewatering Control means The water channel cover is formed by a side cover part and a horizontally long upper cover part continuously provided on the upper part of the side cover part, and the discharge port is formed in a circle of the washing and dewatering tub in the upper cover part. By having a configuration in which a plurality are formed at substantially the same height in the circumferential direction, in the washing process, it is possible to agitate while washing the washing liquid uniformly from above with respect to the laundry in the washing and dehydrating tub. Washing unevenness can be prevented and washing performance can be improved.

According to a second aspect of the present invention, in the first aspect, the upper cover portion is formed with discharge ports at both ends in the circumferential direction of the washing and dewatering tub, and the discharge port is formed at the center of the upper cover portion. By forming the opening narrower as the distance from the side increases, the washing liquid can be sprayed over a wide range.

  According to a third invention, in the first or second invention, the upper cover portion is formed with a central discharge port at the center, a left discharge port on the left side of the central discharge port, and a right discharge port on the right side. Accordingly, the washing liquid can be sprayed over a wide range, and the washing liquid can be permeated into the laundry, thereby preventing washing unevenness and improving the washing performance.

  In a fourth aspect based on the third aspect, the left discharge port and the right discharge port are formed in a range of 35 ° to 45 ° to the left and right with respect to the central discharge port. The liquid can be sprinkled.

  According to a fifth invention, in any one of the first to fourth inventions, the two water channel covers are provided at opposite positions of the washing and dewatering tub so that the washing liquid can be sprayed over a wide range. .

  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)
FIG. 1 is a longitudinal sectional view of a washing machine according to Embodiment 1 of the present invention, FIG. 2 is a sectional view of a washing / dehydrating tub of the washing machine, and FIG. 4 is a cross-sectional view of the upper water channel portion of the circulation water channel of the washing machine, FIG. 5 is an enlarged cross-sectional view of the main part of the upper water channel portion of the circulation water channel of the washing machine, and FIG. It is the principal part expanded sectional view which looked at the upper channel part of the circulation channel of the washing machine from the upper part.

  In FIG. 1, a main body 1 is provided with a water tank 3 that is anti-vibrated and supported by a plurality of suspensions 2 inside, and the suspension 2 absorbs vibration generated in the water tank 3 during dehydration. A drain port 25 and a drain valve 26 are provided at the bottom of the water tank 3.

  A washing / dehydrating tub 7 for storing laundry is rotatably disposed inside the water tub 3. The washing and dewatering tub 7 is provided with a large number of dewatering holes 5 on the side wall, and an annular fluid balancer 6 for reducing dehydration vibration is attached to the upper part.

  The washing / dehydrating tub 7 is rotatably disposed around a washing / dehydrating shaft 4 having a hollow and double structure, and a pulsator 8 for stirring clothes (laundry) at the inner bottom of the washing / dehydrating tub 7. Are rotatably arranged.

  A motor 9 is attached to the bottom of the water tank 3. The motor 9 includes a clutch mechanism and a brake mechanism. During washing, the motor 9 brakes the dehydrating shaft of the washing / dehydrating shaft 4 and drives the washing shaft of the washing / dehydrating shaft 4 to rotate the pulsator 8. Further, the motor 9 releases the braking of the dewatering shaft of the washing / dehydrating shaft 4 at the time of dehydration, and drives the washing / dehydrating shaft 4 to rotate the washing and dewatering tub 7. At the time of dehydration, the drain valve 26 is opened, and the washing liquid or the rinsing liquid in the water tub 3 is drained out of the machine from the drain port 25 through the drain valve 26.

  The upper frame 21 covers the upper part of the main body 1, and has an openable / closable lid 28 that covers a laundry input port 27 formed in a substantially central part, and an operation display unit 23 provided on the front surface part. A control device 24 is provided on the inner side, and a water supply valve 22 for supplying water into the washing and dewatering tub 7 is provided on the inner side of the rear part.

  The control device 24 includes a control means (not shown) composed of a microcomputer, and controls the motor 9, the water supply valve 22, the drain valve 26 and the like, and sequentially controls a series of steps of washing, rinsing and dehydration. It is configured.

  A bottom member 31 made of synthetic resin that constitutes the bottom surface of the washing and dewatering tub 7 is attached to the lower part of the washing and dewatering tub 7. The bottom surface member 31 is formed with a step portion (not shown) facing the pulsator 8 close to the side surface, and a space for accommodating the pulsator 8 between the step portion and the inner bottom surface of the bottom surface member 31 is formed. Forming. In this space, the pump chamber 19 is formed between the back surface of the pulsator 8 and the bottom surface of the bottom member 31, and the blades 18 formed in the pulsator 8 are disposed in the pump chamber 19. The outer peripheral end 8a of the pulsator 8 is located above the stepped portion.

  As shown in FIGS. 2 to 6, a pair of water channel covers 14 are provided opposite to the inner wall of the washing and dewatering tub 7. A lint filter 32 is disposed at one position rotated 90 ° from the water channel cover 14. Further, a cover 33 is provided at a position opposite to the lint filter 32 which is the other position rotated by 90 ° from the water channel cover 14. A low water level discharge port 34 is formed in the cover 33 at a position approximately in the middle of the height of the washing and dewatering tub 7.

  The position where the water channel cover 14 of the bottom member 31 is mounted is formed in an arc shape having substantially the same diameter as the washing and dewatering tub 7, a space communicating from the pump chamber 19 is formed, and formed by mounting the water channel cover 14. The circulating water channel 10 and the pump chamber 19 are configured to communicate with each other, and the surface of the bottom surface member 31 and the surface of the water channel cover 14 are configured to have substantially no step. A step portion 37 is formed at the lower end portion of the water channel cover 14, and is configured to be continuous with the step portion of the bottom surface member 31.

  The water channel cover 14 is formed in a substantially T-shape, and a side cover portion 15 extending in the rotation axis (vertical) direction of the washing / dehydrating tub 7 on the inner wall side surface of the washing / dehydrating tub 7 and an upper portion of the washing / dehydrating tub 7. The upper cover 16 extends in the circumferential direction of the washing and dewatering tub 7 at a position below the fluid balancer 6. The water channel cover 14 is watertightly attached to the side surface of the washing and dewatering tub 7 via a packing member or the like, and the rear cover portion is attached to the upper cover portion 16 from the side surface side of the washing and dewatering tub 7. By installing 38, the circulating water channel 10 is formed. The circulating water channel 10 includes a side water channel 17 formed in the side cover portion 15 and an upper water channel 20 formed in the upper cover portion 16. The upper water channel 20 includes a left upper water channel 41 and a right upper water channel 42.

  When the pulsator 8 is rotated, the washing liquid in the pump chamber 19 is sent toward the circulation channel 10 of the channel cover 14 by the rotation of the blade 18. The washing liquid is also sent into the lint filter 32 and the cover 33.

  A central discharge port 11 is formed at a central portion of the upper cover portion 16 and above the side cover portion 15, and a left end portion of the upper cover portion 16 (as viewed from the rotation center of the washing and dewatering tub 7) A left discharge port 12 is formed at the right end of the upper cover portion 16 (as viewed from the center of rotation of the washing and dewatering tub 7). The central discharge port 11, the left discharge port 12, and the right discharge port 13 are formed at substantially the same height in the circumferential direction of the washing and dewatering tub 7 at a position below the fluid balancer 6.

  As shown in FIG. 4, a left guide wall 35 and a right guide wall 36 are formed on the circulation channel 10 side of the channel cover 14 from the upper part of the side cover part 15 to the upper end part side of the upper cover part 16. Yes.

The left guide wall 35 is formed with a space between the left inner surface of the water channel cover 14 and guides the washing liquid rising in the side water channel 17 toward the upper water channel 20 toward the left upper water channel 41. It curves toward the upper left water channel 41 as it goes upward. The upper end portion of the left guide wall 35 constitutes the left edge portion of the central discharge port 11. A left restricting wall 44 is formed at the left end of the left upper water channel 41 and along the left end of the left outlet 12 so as to be substantially parallel to the left inner surface of the water channel cover 14. The washing liquid in the upper water channel 41 flows toward the left discharge port 12.

  The right guide wall 36 is formed so as to be spaced from the right inner surface of the water channel cover 14 so as to guide the washing liquid rising in the side water channel 17 toward the upper water channel 20 toward the right upper water channel 42. It curves toward the upper right water channel 42 as it goes upward. The upper end portion of the right guide wall 36 constitutes the right edge portion of the central discharge port 11. A right restriction wall 45 is formed at the right end of the right upper water channel 42 and along the right end of the right outlet 13 so as to be substantially parallel to the right inner surface of the water channel cover 14. The washing liquid in the upper water channel 42 is made to flow toward the right discharge port 13.

  A space is formed between the left guide wall 35 and the right guide wall 36 so as to guide the washing liquid rising through the side water channel 17 toward the upper water channel 20 toward the central discharge port 11, thereby forming a central water channel 43. doing. A central water channel inlet 43a that is an inlet to the central water channel 43 is formed narrower than a left upper water channel inlet 41a that is an inlet to the left upper water channel 41 and a right upper water channel inlet 42a that is an inlet to the right upper water channel 42, The flow rate of the washing liquid flowing toward the discharge port 11, the left discharge port 12, and the right discharge port 13 is configured to be substantially the same.

  The central discharge port 11 is formed by raising the lower edge of the opening of the central portion upward, thereby narrowing the opening of the central portion and raising the lower edge of the opening of both end portions upward toward both ends. The opening is configured to become narrower toward both ends, and is configured to spray water almost uniformly from the central discharge port 11 over a wide range.

  The left discharge port 12 is configured such that the lower edge of the opening is raised upward toward the left end portion, and the opening is narrowed toward the left end portion, and is configured to spray water from the left discharge port 12 over a wide range. doing.

  The right discharge port 13 is configured such that the lower edge of the opening is raised upward toward the right end portion, and the opening is narrowed toward the right end portion, and is configured to spray water over a wide range from the right discharge port 13. doing.

  The operation and action of the washing machine configured as described above will be described below.

  In the washing process, when the laundry is put into the washing and dewatering tub 7 and started by pressing the start button (not shown) of the operation display section 23, the cloth amount is detected by the cloth amount detecting means (not shown). The amount of detergent corresponding to the amount of cloth is displayed on the operation display unit 23. When the displayed amount of detergent is input, the water supply valve 22 operates to supply water up to the water level corresponding to the amount of cloth, and the pulsator 8 rotates to start the washing process.

  When the washing process is started, the detergent is efficiently dissolved in the supplied water by the rotation of the pulsator 8. The washing liquid in which the detergent is dissolved rises from the pump chamber 19 to the upper water channel 20 from the side water channel 17 of the circulating water channel 10 by the centrifugal force generated by the rotation of the blades 18. The washing liquid is diverted to the central water channel 43, the left upper water channel 41, and the right upper water channel by the left guide wall 35 and the right guide wall 36, and the washing and dewatering tub is discharged from the central discharge port 11, the left discharge port 12, and the right discharge port 13. Water is sprayed toward the laundry in 7 to allow the washing liquid to penetrate into the laundry.

  On the circulating water channel 10 side of the water channel cover 14, the left guide wall 35 that guides the washing liquid to the left upper water channel 41 and the right upper water channel 42 from the upper part of the side cover part 15 to the upper end part side of the upper cover part 16. Since the right guide wall 36 to be guided is formed and the central water channel 43 is formed between the left guide wall 35 and the right guide wall 36, the wash water flowing through the circulation water channel 10 is efficiently discharged to the central discharge port 11 and the left discharge wall. The outlet 12 and the right outlet 13 can be branched.

  By adjusting the shapes of the left guide wall 35 and the right guide wall 36, the cross-sectional areas of the left upper water channel 41, the right upper water channel 42, and the central water channel 43, the center discharge port 11, the left discharge port 12, and the right discharge port 13 are obtained. The flow rate of the flowing wash water can be made substantially uniform.

  As shown in FIG. 4, the central outlet 11 narrows the opening of the central portion by raising the opening lower edge of the central portion upward. If the opening width of the central portion is not narrowed, the washing liquid flows most easily from the central portion, so that the amount of the washing liquid from the central portion increases and the washing liquid cannot be sprayed over a wide range. In the present embodiment, since the opening of the central portion of the central discharge port 11 is narrowed, the washing liquid can be prevented from concentrating on the central portion, and the washing liquid can be sprayed over a wide range from the entire central discharge port 11. .

  Further, the central discharge port 11 is configured such that the lower edge of the opening at both ends is raised upward toward the both ends, and the opening at both ends is narrowed toward both ends. When the openings at both end portions are not narrowed, the washing liquid is guided by the left guide wall 35 and the right guide wall 36 and spreads throughout the central discharge port 11, and the left guide wall 35 and the right guide wall 36 at both end portions. Therefore, the flow rate of the washing liquid from both ends of the central discharge port 11 is increased.

  In the present embodiment, the central discharge port 11 is configured so that the opening lower edge of both end portions is raised upward as it becomes both ends, and the opening of both end portions is narrowed as it becomes both ends side. The flow rate of the washing liquid from both ends of the central discharge port 11 can be suppressed, and the washing liquid can be sprayed from the entire central discharge port 11 over a wide area substantially uniformly.

  The left discharge port 12 is configured such that the lower edge of the opening is raised upward toward the left end portion on the left regulating wall 44 side, and the opening is narrowed toward the left end portion. The lower edge of the opening is raised upward toward the right end on the right regulating wall 45 side, and the opening is narrowed toward the right end.

  The washing water flowing into the left upper water channel 41 is restricted in flow by the left restriction wall 44 and flows toward the left outlet 12. At this time, when the opening width of the left outlet 12 is the same, the flow rate of the washing water on the left regulating wall 44 (left end) side of the left outlet 12 increases, and the extension direction of the left upper water channel 41 This results in uneven washing water discharge. On the other hand, in the present embodiment, since the opening is narrowed by raising the lower edge of the opening upward toward the left end, the amount of washing water discharged from the left end is reduced. Therefore, the wash water discharged from the left discharge port 12 can be sprayed evenly over a wide area.

  Further, the washing water flowing into the right upper water channel 42 is restricted in flow by the right restriction wall 45 and flows toward the right outlet 13. At this time, when the opening width of the right outlet 13 is the same, the flow rate of the washing water on the right regulating wall 45 (right end) side of the right outlet 13 increases, and the extending direction of the right upper water channel 42 extends. This results in uneven washing water discharge. On the other hand, in the present embodiment, the lower edge of the opening is raised upward toward the right end, and the opening is narrowed, so the amount of washing water discharged from the right end is Therefore, the wash water discharged from the right discharge port 13 can be sprayed evenly over a wide area.

  FIG. 8 is a diagram showing the relationship between the discharge range from the circulation channel of the washing machine and the laundry in the embodiment of the present invention.

  As shown in FIG. 8, the water spray from the central discharge port 11, the left discharge port 12, and the right discharge port 13 of one circulation channel 10 occupies about half the area in the washing and dewatering tub 7, By sprinkling water from the circulation channel 10, the washing liquid can be sprinkled from above to almost the entire laundry 30 in the washing and dewatering tub 7 to allow the washing liquid to penetrate into the laundry. Thereby, washing performance can be prevented and washing performance can be improved.

  As a result of the experiment, the angle between the central position of the central discharge port 11 and the central position of the left discharge port 12 and the angle between the central position of the central discharge port 11 and the central position of the right discharge port 13 are in the range of 35 ° to 45 °. It is preferable to set to. With this configuration, water can be uniformly distributed throughout the washing and dewatering tub 7. Although depending on the flow rate of the washing liquid in the circulation channel, the shape of the discharge port, and the like, water can be sprayed throughout the washing and dewatering tub 7 by setting the angle within the above range.

  In the rinsing process, the rinsing water is sprayed widely from above the laundry as in the case of washing, so that rinsing can be promoted and the rinsing performance can be improved.

  FIG. 7 is a cross-sectional view of the upper water channel 20 of the circulation water channel 10 in the embodiment of the present invention.

  As shown in FIG. 7, inclined surfaces 39 are formed at both end portions on the front surface side of the upper cover portion 16. Due to the inclined surfaces 39 formed at both end portions of the upper cover portion 16, both end portions of the upper cover portion 16 are continuous with the inner peripheral surface of the washing and dewatering tub 7 with a smooth inclination. Therefore, in the washing process and the rinsing process, the laundry is less likely to be caught at both ends of the upper cover portion 16, and the washing unevenness due to the laundry being caught and difficult to rotate can be suppressed.

  In addition, raised portions 40 are formed on the inner peripheral side of the washing and dewatering tub 7 at the peripheral edges of the central discharge port 11, the left discharge port 12, and the right discharge port 13. By forming the raised portion 40, the laundry does not easily enter or get caught in the central discharge port 11, the left discharge port 12, and the right discharge port 13, and washing unevenness and rinse unevenness due to the laundry being caught are suppressed. can do.

  In the present embodiment described above, the three discharge ports of the central discharge port 11, the left discharge port 12, and the right discharge port 13 are formed in the water channel cover 14. Only the discharge port 12 and the right discharge port 13 may be provided. Further, either the left discharge port 12 or the right discharge port 13 may be omitted. Alternatively, a total of four discharge ports may be formed in the upper cover portion 16, two on the left and right sides with respect to the side cover portion 15.

  In the present invention, a plurality of discharge ports are formed in the circumferential direction of the washing and dewatering tub 7 in the upper part of the water channel cover 14, and the shape and number of the discharge ports are not limited to those in the embodiment.

As described above, in the present embodiment, the water channel cover 14 that forms the water circulation channel 10 in a watertight manner has the side cover portion 15 in which the inner wall portion of the washing and dewatering tub 7 has a vertically long shape, and the top portion has a horizontally long shape. The upper cover part 16 is integrally formed in a substantially T-shape. The central discharge port 11 is formed at the center of the upper cover part 16, the left discharge port 12 is provided on the left side of the central discharge port 11, and the right discharge port 13 is provided on the right side. By forming and spraying the washing liquid from the central discharge port 11, the left discharge port 12, and the right discharge port 13 into the washing and dewatering tank 7 through the circulation water channel 10 by the rotation of the pulsator 8, In the washing process and the rinsing process, the washing liquid in the washing and dewatering tub 7 can be stirred evenly while sprinkling the washing liquid from above, so that washing and rinsing irregularities are prevented to prevent washing and rinsing performance. Improve Rukoto can.

  As described above, the washing machine according to the present invention improves washing performance by preventing washing unevenness by stirring the washing liquid evenly over the laundry in the washing and dewatering tank while sprinkling the washing liquid uniformly from above. Can be applied to drum-type and other washing machine applications.

7 Washing / Dehydrating Tank 8 Pulsator 10 Circulating Water Channel 11 Central Discharge Port 12 Left Discharge Port 13 Right Discharge Port 14 Water Channel Cover 15 Side Cover Portion 16 Upper Cover Portion 17 Side Water Channel 18 Blade 19 Pump Room 20 Upper Water Channel 31 Bottom Member 35 Left Guide Wall 36 Right guide wall

Claims (5)

A main body, a water tub supported in an anti-vibration manner inside the main body, a washing and dewatering tub rotatably contained in the water tub, and a pulsator rotatably disposed at the center inner bottom of the washing and dewatering tub A pump chamber formed at a position below the pulsator in the water tank, a blade formed integrally with the pulsator and disposed in the pump chamber, and the pulsator and the washing and dewatering tank are driven to rotate. A motor, a water supply valve for supplying water to the water tub, a water channel cover provided on an inner wall of the washing and dewatering tub, and forming a circulation water channel for circulating the washing liquid in the pump chamber to the washing and dewatering tub, and the water channel cover A discharge port for supplying the washing liquid into the washing and dewatering tub, and a control means for controlling the operation of the motor, water supply valve, etc., and controlling the steps of washing, rinsing and dewatering. The waterway -Is formed by a side cover part and a horizontally long upper cover part connected to the upper part of the side cover part, and the discharge port is formed in the circumferential direction of the washing and dewatering tub in the upper cover part. A washing machine comprising a plurality of substantially the same height. The upper cover part is formed with discharge ports at both ends in the circumferential direction of the washing and dewatering tub, and the discharge port is formed with a narrower opening as it is separated from the center side of the upper cover part. The washing machine according to claim 1, wherein The washing machine according to claim 1 or 2, wherein the upper cover portion is formed with a central discharge port at the center, a left discharge port on the left side of the central discharge port, and a right discharge port on the right side. . The washing machine according to claim 3, wherein the left discharge port and the right discharge port are formed in a range of 35 ° to 45 ° to the left and right with respect to the central discharge port. The washing machine according to any one of claims 1 to 4, wherein two of the water channel covers are provided at opposite positions of the washing and dewatering tub.

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