JP5459171B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum-type washing machine that performs washing of clothes in a rotating drum.

  Conventionally, in this type of washing machine, there has been proposed a configuration in which a detergent charging means is provided, and the detergent that has been poured into the water tank flows into the drainage path from the drain outlet at the bottom of the water tank and does not reduce the cleaning effect. (For example, refer to Patent Document 1).

  4 is a longitudinal cross-sectional view of a conventional washing machine described in Patent Document 1, FIG. 5 (a) is a cross-sectional view of a main part during washing of the washing machine, and FIG. 5 (b) is a perspective view of the main part. The figure is shown.

  4, 5 </ b> A, and 5 </ b> B, a concave drainage groove 30 that is long in the direction of the rotary shaft 20 is provided in the inner bottom portion of the water tank 19 that rotatably includes the rotary drum 17. A drainage port 31 is provided at the bottom of the drainage groove 30, one end of the drainage channel 32 is connected to the drainage port 31, the other end of the drainage channel 32 is connected to the drainage valve 33, and the washing in the water tank 19 is performed. The water is drained. The water supply valve 34 supplies tap water into the water tank 19 together with the detergent supplied to the detergent case 35 through the detergent case 35 and a water supply path 35 a provided near the upper rear surface of the water tank 19.

  The drain port 31 is provided in the vicinity of the side wall 30a of the drainage groove 30 on the side of the water supply path 35a and the back surface 45 of the drainage groove 30, and the side wall 30a of the water supply path 35a of the drainage groove 30 extends to the back surface 45 of the drainage groove 30. An extending rib 46 that covers the drain port 31 is provided. The back surface 45 of the drainage groove 30 protrudes forward from the back surface 47 other than the drainage groove 30, and a part of the backside 45 of the drainage groove 30 opposite to the water supply path 35 a side is a surface other than the drainage groove 30. It is the structure made into the substantially identical surface 47a.

  The above configuration is a proposal that the detergent introduced from the water supply path 35a can be prevented from directly entering the drain 31 when the detergent is introduced.

JP 2007-111409 A

  However, in the conventional configuration shown in Patent Document 1, if the detergent put into the detergent case is a powder detergent, it can be prevented from flowing into the drainage path due to the effect of the extending ribs. Before flowing, the fluidity may flow into the water tank from the detergent case, and further through the extending rib that covers the drain outlet at the bottom of the tank, and may flow from the drain outlet into the drain path.

  If the liquid detergent flows into the drainage path, the water flow during washing by the rotating drum does not easily reach the drainage path, so that it remains in the drainage path, resulting in a shortage of detergent that acts on the laundry. There was a problem that the cleaning performance was not exhibited.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a drum-type washing machine capable of exhibiting a predetermined cleaning performance by preventing liquid detergent from flowing into a drainage path. .

  In order to solve the above-mentioned conventional problems, the drum type washing machine of the present invention has a rotating drum formed in a bottomed cylindrical shape, and a rotating shaft direction is horizontal or horizontal from the opening front side toward the back side as the bottom. A water tank containing the rotating drum so as to be inclined downward from the direction, a motor for rotating the rotating drum, a water supply valve for supplying water into the water tank, and a side connected to the water supply valve from the center of the water tank. A water supply path communicating with the water tank at a position close thereto, a concave drainage groove formed in a lower part of the water tank, a drainage port provided at a bottom of the drainage groove and in the vicinity of the lowest point of the water tank, and the drainage A drain valve communicating with the mouth, and a control means for sequentially controlling a series of processes of washing, rinsing, and dewatering by controlling the motor and the like, and the drain outlet is provided on a side wall of the drain groove on the water supply path side. When forming the upper extension rib In addition, a lower extending rib that covers the drain outlet is provided at a position near the water supply path in the drain groove between the drain outlet and the upper extending rib, and the tip of the lower extending rib is the upper extending rib. Since the liquid detergent can be prevented from flowing into the drainage system by being longer than the tip of the liquid, the effect of the detergent can be sufficiently exerted and predetermined cleaning performance can be ensured.

  The drum type washing machine of the present invention has a simple structure, and liquid detergent does not flow into the drainage system, and can ensure a predetermined cleaning performance.

The longitudinal cross-sectional view of the drum type washing machine in Embodiment 1 of this invention (A) Main part sectional drawing seen from the front at the time of washing of the drum type washing machine, (b) The principal part perspective view (A) The principal part sectional view seen from the front at the time of washing of the drum type washing machine in Embodiment 2 of the present invention, (b) The principal part perspective view A longitudinal sectional view of a conventional washing machine described in Patent Document 1 (A) Main part sectional drawing at the time of washing of the washing machine, (b) Permanent part perspective view

  According to a first aspect of the present invention, there is provided a rotating drum formed in a bottomed cylindrical shape, and the rotating drum such that the direction of the rotation axis is horizontal or inclined downward from the horizontal direction from the front side to the open side toward the back side. A water tank to enclose, a motor for rotationally driving the rotating drum, a water supply valve for supplying water into the water tank, and a water supply path connected to the water tank and communicating with the water tank at a position closer to the side than the center of the water tank. A concave drainage groove formed in the lower part of the water tank, a drainage port provided in the bottom of the drainage groove and in the vicinity of the lowest point of the water tank, a drainage valve communicating with the drainage port, the motor, etc. And a control means for sequentially controlling a series of steps of washing, rinsing and dewatering, and an upper extending rib covering the drain outlet is formed on a side wall of the drain groove on the water supply path side, and the drain Between the mouth and the upper extension rib The lower extension rib that covers the drain outlet is provided at a position near the water supply path in the drainage groove, and the tip of the lower extension rib is made longer than the tip of the upper extension rib, so that the liquid detergent is drained. Therefore, it is possible to ensure a predetermined cleaning performance.

  In the second invention, in particular, in the first invention, the lower extending rib is inclined upward from the side wall on the water supply path side of the drainage groove toward the opposite side wall, so that it is transmitted from above to the inner peripheral surface of the water tank. The liquid detergent that has flowed in can be reliably stored on the upper portion of the lower extending rib, and can be more reliably prevented from flowing into the drain outlet.

  According to a third invention, in particular, in the first invention, the lower extending rib is substantially V-shaped, the water supply path side of the drainage groove is on the short side, and the side of the drainage groove facing the water supply path side is It is formed on the long side, and by providing a gap between the short side and the side wall on the water supply path side of the drainage groove, the liquid detergent can be reliably stored on the upper part of the lower extending rib, It can prevent more reliably that it flows into the mouth.

  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 drum type washing machine according to Embodiment 1 of the present invention, FIG. 2 (a) is a sectional view of an essential part seen from the front during washing of the drum type washing machine, and FIG. 2 (b). Shows a perspective view of the main part.

  As shown in FIG. 1, a water tank 52 is swingably disposed inside a washing machine main body 51, and a rotary drum 53 is rotatably disposed in the water tank 52. It is rotationally driven by a motor 54 attached to the back side from the outside.

  Further, the drum type washing machine of the present invention automatically controls the motor 54, the water supply system 55, the drainage system 56, the drying system 57, etc. shown in FIG. 1 according to the mode setting and control program, and at least the washing process, the rinsing process, A so-called drum-type washing and drying machine having a function of performing a dehydration process and a drying process is configured. However, the drying system 57 can be omitted.

  The water supply system 55 is opened in the water tank 52 as shown by a solid line arrow a through a water supply path 75 provided on the left side (sideward side) as viewed from the front by opening and closing a water supply valve (not shown). Water can be supplied in a timely manner, and the detergent in the detergent container 58 can be poured into the water tank 52 together with tap water in a timely manner using the water supply.

  The drainage system 56 opens and closes the drainage valve 59 so that the bottom of the water tank 52 (the bottom of the drainage groove 76 and the water After the drainage pipe 60 connected to the drainage port 71 formed in the vicinity of the lowest point) is installed in the filter case 67 and collects lint and passes through the drainage filter 61 removable from the outside, The water can be drained to the outside through the connection hose 72 and the drain valve 59. A concave drainage groove 76 is formed at the inner lower part of the side wall of the water tank 52 so that the water can be easily drained into the drainage port 71.

  The rotary drum 53 is directly connected to a motor 54 fixed to the outer bottom portion of the water tank 52 by a rotary shaft 63 arranged so as to be inclined substantially horizontally or downwardly from the horizontal direction. The clothes thrown into the rotating drum 53 from the section are stirred and washed. The open / close door 64 is sealed and opened through a sealing material 66 attached to the opening edge 65 of the water tank 52.

  The drying system 57 circulates the air in the water tank 52 and the rotating drum 53 by the blower 62 as shown by the broken line arrow c in FIG. In the drying system 57, a filter (not shown) that collects and removes dust from the yarns, a dehumidifying part (not shown) that dehumidifies the introduced air after dust removal, and a high temperature that is exhausted to heat the dehumidified air. It has a heating part (not shown) etc. used as air.

  The mode such as the driving course and various functions are selected by inputting from the operation panel 73 provided at the upper front of the washing machine body 51, and the control means 74 displays the display means on the operation panel 73 based on the input information (FIG. When the operation start is set by an input setting means (not shown) on the operation panel 73, a water level detecting means (not shown) for detecting the water level in the water tank 52 is displayed. ) Etc. are input to control the operation of the motor 54, drain valve 59, water supply valve (not shown), etc., and operations such as washing, rinsing, dehydration, and drying are performed.

  2A is a cross-sectional view of the main part of the drum-type washing machine as viewed from the front during washing, and in FIG. 2B a perspective view of the main part, the drain port 71 is located on the water supply path 75 side of the concave drain groove 76. Provided in the vicinity of the side wall 77 and the back surface 78 of the drainage groove 76, the side wall 77 on the water supply path 75 side of the drainage groove 76 extends to the back surface 78 of the drainage groove 76 and covers the drainage port 71. The rib 79 is formed so as to extend in a direction opposite to the dewatering rotation direction of the rotary drum 53. Further, the side wall 77 of the drainage groove 76 extends to the back surface 78 of the drainage groove 76, at a substantially intermediate position between the upper extension rib 79 and the drainage port 71, and at a position near the water supply path 75 in the drainage groove 76. Similarly to the direction of the upper extending rib 79, the lower extending rib 80 is formed in the direction opposite to the dewatering rotation direction of the rotary drum 53. The lower extending rib 80 is formed so that the length from the side wall 77 is approximately twice that of the upper extending rib 79, and the angle formed with the side wall 77 is an acute angle. That is, the liquid detergent is formed so as to be inclined upward on the opposite side of the side wall 77 (from the side wall 77 on the water supply path 75 side of the drainage groove 76 toward the opposite side wall), and receives the liquid detergent dripped from the upper surface end of the upper extension rib 79. It is configured.

  In the above configuration, the basic operation of the washing process will be described.

  As described above, the detergent thrown into the detergent container 58 by the user is put into the water tank 52 as shown by the solid arrow a by the supplied tap water. The introduced detergent is dissolved by the rotating operation of the rotating drum 53 in the detergent dissolving process of the washing process, and performs the soil removing action of the laundry in the rotating drum 53.

  However, in the case of a liquid detergent, due to its fluidity, it may flow into the water tank 52 from the detergent container 58 via the water supply path 75 by its own weight before water supply. The liquid detergent that has flowed into the water tank 52 is provided on the left side from the center of the water supply path 75 when viewed from the front, and therefore travels along the left inner peripheral surface of the water tank 52 and on the upper extending rib 79 as indicated by the arrow A. It flows. Then, it falls from the tip of the upper extension rib 79 onto the lower extension rib 80 and temporarily accumulates in a pocket portion 81 formed by the lower extension rib 80 and the side wall 77 of the drainage groove 76 on the water supply path 75 side. There is no flow into the drain 71.

  The liquid detergent temporarily accumulated in the pocket portion 81 is diffused and dissolved in the water tank 52 by the water flow generated by the rotating operation of the rotating drum 53 started after the water supply.

  When the washing process is completed and drained, the washing water passes through the drainage filter 61 in the filter case 67 via the drainage pipe 60 connected to the drainage port 71, and then passes through the connection hose 72 and the drainage valve 59. However, a small amount of washing water may remain in the pocket portion 81. However, in the subsequent dehydration process, the rotary drum 53 is rotated in the clockwise direction of the arrow B, so that the pocket portion 81 composed of the upper and lower upper extending ribs 79 and the lower extending ribs 80 Strong dewatered air is generated, and the washing water remaining in the pocket portion 81 is blown to the front side of the lower extending rib 80, falls down, flows to the drain port 71, and is drained outside the apparatus. In addition, since the lower extending rib 80 is formed on the outer peripheral side with respect to the inner peripheral diameter (two-dot chain line d) of the water tank 52, the dehydrated air is easily blown into the pocket portion 81.

  As described above, in the first embodiment, on the side wall of the drainage groove on the water supply path side, the upper extension rib extending to the back surface and covering the drainage outlet is formed, and the drainage opening and the upper extension rib are abbreviated. At the intermediate position, on the side wall of the drainage channel on the water supply path side, a lower extending rib that extends to the back surface and covers the drain outlet is formed to extend so that the tip is longer than the upper extending rib. Since it can be prevented from flowing into the drainage system, the effect of the detergent can be sufficiently exerted to ensure a predetermined cleaning performance.

  In addition, by forming the lower extension rib so as to incline upward toward the side opposite to the side wall on the water supply path side, the liquid detergent can be reliably accumulated on the upper part of the lower extension rib and flows into the drain outlet. Can be prevented more reliably.

(Embodiment 2)
FIG. 3A is a cross-sectional view of a main part viewed from the front during washing of the drum type washing machine according to Embodiment 2 of the present invention, and FIG. 3B is a perspective view of the main part.

  3 (a) and 3 (b), the drain port 71 is provided in the vicinity of the side wall 77 of the concave drain groove 76 on the water supply path 75 side and the back surface 78 of the drain groove 76. A substantially horizontal upper extending rib 79 is formed so as to extend on the rear surface 78 of 76 and cover the drain port 71. Further, a lower extension rib 82 is formed at a substantially intermediate position between the upper extension rib 79 and the drain outlet 71 so as to extend to the back surface 78 of the drainage groove 76. The lower extending rib 82 has a substantially V-shaped side surface, a short side 83 on the side wall 77 side, and a long side 84 on the opposite side (the side facing the water supply channel 75 side of the drain groove 76). A gap 85 is provided between the short side 83 and the side wall 77.

  In the above configuration, the liquid detergent that has flowed into the water tank 52 is provided on the left side from the center of the water supply path 75 when viewed from the front. It flows over 79. Then, it falls from the tip of the upper extending rib 79 onto the lower extending rib 82, temporarily accumulates in the V-shaped pocket portion 86 formed by the short side 83 and the long side 84, and does not flow into the drain port 71.

  The liquid detergent temporarily accumulated in the V-shaped pocket 86 is diffused and dissolved in the water tank 52 by the water flow generated by the rotating operation of the rotating drum 53 started after the water supply.

  When the washing process is completed and drained, the washing water passes through the drainage filter 61 in the filter case 67 via the drainage pipe 60 connected to the drainage port 71, and then passes through the connection hose 72 and the drainage valve 59. However, a small amount of washing water may remain in the V-shaped pocket portion 86. However, in the subsequent dewatering process, the rotating drum 53 rotates in the clockwise direction of arrow B, so that the washing water remaining in the V-shaped pocket portion 86 is caused by the generated dewatered air in the lower extending rib 82. It is blown to the gap 85 provided between the short side 83 and the side wall 77, or is blown to the front side of the lower extension rib 82, falls down, flows to the drain port 71, and is drained outside the machine. . In addition, since the lower extending rib 82 is formed on the outer peripheral side with respect to the inner peripheral diameter (two-dot chain line d) of the water tank 52, the dehydrated air is easily blown into the V-shaped pocket portion 86.

  As described above, in the second embodiment, by forming the lower extending rib in a V shape, the liquid detergent can be reliably stored on the upper portion of the lower extending rib and flows into the drain outlet. Can be more reliably prevented.

  As described above, the drum type washing machine according to the present invention can prevent liquid detergent from flowing into the drainage port with a simple configuration and ensure a predetermined cleaning performance. It can also be applied to applications.

52 Water tank 53 Rotating drum 54 Motor 59 Drain valve 60 Drain pipe 71 Drain port 74 Control means 75 Water supply path 76 Drain groove 77 Side wall 78 Back surface 79 Upper extending rib 80, 82 Lower extending rib

Claims (2)

A rotating drum formed into a bottomed cylindrical shape, a water tank containing the rotating drum so that the rotation axis direction is inclined downward from the horizontal or horizontal direction from the opening front side toward the back side as the bottom, and A motor for rotating the rotating drum, a water supply valve for supplying water into the water tank, a water supply path connected to the water valve and communicating with the water tank at a position closer to the side than the center of the water tank, and a lower part of the water tank Washing and rinsing by controlling the motor and the like, a concave drainage groove formed, a drainage port provided near the bottom of the drainage channel and near the lowest point of the water tank, a drainage valve communicating with the drainage port, And a control means for sequentially controlling a series of steps of dehydration, and an upper extension rib that covers the drain outlet is formed on a side wall of the drain groove on the water supply path side, and the drain outlet and the upper extension are provided. In the drainage groove between the ribs That the lower extended rib covering the drain outlet to a position of the water supply channel closer is provided a the lower extending rib tip the upper extending ribs to be longer than the tip Drum type washing machine, the lower extended rib Is a drum-type washing machine inclined upward from the side wall of the drainage channel on the water supply path side to the opposite side wall. A rotating drum formed into a bottomed cylindrical shape, a water tank containing the rotating drum so that the rotation axis direction is inclined downward from the horizontal or horizontal direction from the opening front side toward the back side as the bottom, and A motor for rotating the rotating drum, a water supply valve for supplying water into the water tank, a water supply path connected to the water valve and communicating with the water tank at a position closer to the side than the center of the water tank, and a lower part of the water tank Washing and rinsing by controlling the motor and the like, a concave drainage groove formed, a drainage port provided near the bottom of the drainage channel and near the lowest point of the water tank, a drainage valve communicating with the drainage port, And a control means for sequentially controlling a series of steps of dehydration, and an upper extension rib that covers the drain outlet is formed on a side wall of the drain groove on the water supply path side, and the drain outlet and the upper extension are provided. In the drainage groove between the ribs The drum-type washing machine is provided with a lower extending rib that covers the drain outlet at a position near the water supply path, and the tip of the lower extending rib is longer than the tip of the upper extending rib. Is substantially V-shaped, the water supply path side of the drainage groove is formed on the short side, and the side facing the water supply path side of the drainage groove is formed on the long side, and the water supply path of the short side and the drainage groove is formed Drum-type washing machine with a gap between the side wall.

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