JP4379265B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum-type washing machine that performs steps such as washing, rinsing, and dewatering in a rotating drum that is rotatably supported in an outer tub.

  A conventional drum type washing machine of this type will be described with reference to FIG.

  In FIG. 8, in the washing machine housing 24 of the drum type washing machine, an inner tub 25 supported by a suspension structure and a large number of through holes 26 are formed on the peripheral surface of the outer tub 25 so as to be rotatable. A rotating drum 27 is provided. The rotary drum 27 is rotationally driven by a drive motor 28. By opening a door body 29 that can be freely opened and closed on the front side of the washing machine casing 24, the laundry is passed through the rotary drum 27 through the front opening 25a of the outer tub 25 and the front opening 27a of the rotary drum 27. It can be taken in and out.

  When the door 29 is opened and the laundry is put into the rotating drum 27, the detergent is put in and the operation is started, water is supplied into the outer tub 25, and the supplied water enters the rotating drum 27 through the through holes 26. Also invade. When the rotary drum 27 is rotationally driven by the drive motor 28 at a predetermined rotational speed, the laundry accommodated in the rotary drum 27 is hooked on the stirring protrusion 30 provided on the inner peripheral surface of the rotary drum 27 and lifted in the rotational direction. Since it falls from an appropriate height, the laundry is subjected to the action of tapping and washing.

  After this washing process, the dirty washing water is drained, and a rinsing process is performed using newly supplied water. When the rinsing process is completed, a dehydration process is performed in which the rotating drum 27 is rotated at a high speed. Each of these processes is automatically executed based on a predetermined control procedure.

The above configuration is a general configuration of a drum-type washing machine, and in addition to the above configuration, in order to improve the cleaning performance, water supplied into the outer tub 2 is pumped up and supplied into the rotating drum 3, and the laundry In some cases, the cleaning power is increased by sufficiently supplying water (for example, see Patent Document 1).
JP 09-215893 (pages 3 to 5, FIG. 1)

  However, in such a conventional drum-type washing machine, since it takes time for the entire laundry to sufficiently contain moisture, it is time to ensure that the washing performance and the rinsing performance are insufficient or that a certain washing performance and rinsing performance are ensured. There was a problem that it took.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a drum-type washing machine that solves the above-described conventional problems and is excellent in cleaning performance and rinsing performance and that can reduce washing time.

In order to solve the above problems, a drum-type washing machine of the present invention includes a rotating drum having a substantially horizontal or inclined rotating shaft, an outer tub in which the rotating drum is rotatably included, and a drive for rotating the rotating drum. a motor, the water supply contact portion comprising a water supply means for supplying water to the rotating the drum from the front opening, before Symbol water discharged from the water supply means has an inclined surface which contacts changing the water supply direction of water in the rotary drum A plurality of locations are provided on the periphery of the opening of the rotating drum, and the inclined surfaces of the water supply contact portions at the plurality of locations have at least two types of inclination angles .

  Since the water discharged from the water supply means hits the inclined surface of the water supply contact portion, the water discharge direction changes, so water can be discharged over a wide range, and water can be quickly and evenly included in the entire laundry, making it fast. Since tapping can be performed in stages, washing performance and rinsing performance are improved, and washing and rinsing time can be shortened.

The drum type washing machine of the present invention can improve the washing performance and the rinsing performance and increase the time by increasing the water penetration speed with respect to the entire laundry.

According to a first aspect of the present invention, there is provided a rotating drum having a substantially horizontal or inclined rotating shaft, an outer tub that rotatably includes the rotating drum, a drive motor that rotates the rotating drum, and a front opening of the rotating drum. comprising a water supply means for supplying water to the rotating the drum, provided before Symbol plurality places the water contact portion to the periphery of the opening of the rotary drum which is water discharged from the water supply means has an inclined surface which contacts changing the water supply direction of the water The inclined surfaces of the plurality of water supply contact portions have at least two types of inclination angles, and the water discharged from the water supply means hits the inclined surface of the water supply contact portion, so that the water discharge direction changes. , Water can be discharged over a wide range, water can be quickly and evenly included in the entire laundry, and washing can be performed at an early stage, improving the washing performance and rinsing performance, washing, Too much time is one that can be shortened.

Moreover, since the water discharge direction changes in multiple stages, water can be discharged in a wider range, and water can be quickly and uniformly contained in the entire laundry.

According to a second aspect of the present invention, there is provided a rotating drum having a substantially horizontal or inclined rotating shaft, an outer tub that rotatably includes the rotating drum, a drive motor that rotates the rotating drum, and a front opening of the rotating drum. Provided with water supply means for supplying water into the rotating drum, and provided with at least one water supply contact portion having an inclined surface that changes the water supply direction when the water discharged from the water supply means comes into contact with the periphery of the opening of the rotating drum The inclined surface of the water supply contact portion is a continuous surface with a gradually changing inclination angle, and since the water discharge direction changes continuously, water can be discharged over a wide range, and water can be discharged quickly. It can be included in the entire laundry without unevenness.

In the third aspect of the invention, in particular, a substantially ring-shaped balancer is provided on the front surface of the rotary drum of the first or second aspect of the invention, and the water supply contact portion is integrally or integrally provided on the inner side surface of the balancer. The shape of the water supply contact portion is stabilized, and as a result, the direction of discharged water is stabilized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
1 is a cross-sectional view of a drum type washing machine according to a first embodiment of the present invention, FIG. 2 is a plan view of a balancer of the drum type washing machine, and FIG. 3 is a water supply contact portion of the drum type washing machine. FIG.

  In the drawing, an outer tub 2 is supported in an inclined state by a suspension structure in a washing machine casing 1 of a drum type washing machine, and a bottomed cylindrical rotary drum 3 is provided in the outer tub 2. The rotary shaft is supported so as to be rotatable in a state where the rotary shaft is inclined. Agitating protrusions 4 are provided at a plurality of positions on the inner peripheral surface of the rotating drum 3, and the rotating drum 3 is driven to rotate by a drive motor 5 attached to the back surface of the outer tub 2, and its rotation speed and rotation The direction can be changed. On the front side of the washing machine casing 1, a door body 6 that can be opened and closed is provided.

  One end of the first water supply hose 8 is connected to the first water supply valve 7, the other end of the first water supply hose 8 is connected to the detergent case 9 that houses the detergent 9 a, and the second water supply hose 8 is connected to the lower part of the detergent case 9. One end of the water supply hose 10 is connected, and the other end of the second water supply hose 10 is connected to the outer tub 2 so that water can be supplied into the outer tub 2.

The upper surface of the detergent case 9 is provided with a plurality of water injection holes 11 that communicate with the first water supply hose 8 and draw water in a shower shape. The shower-like water that comes out of the water injection hole 11 is the detergent 9 a on the detergent charging box 12. And flows down into the outer tub 2 together with the detergent 9a. One end of a third water supply hose 14 is connected to the second water supply valve 13, and the other end of the third water supply hose 14 is connected to a water injection cap 15 serving as water supply means. The water injection cap 15 opens toward the front opening 16 of the rotary drum 3.

  A fluid type balancer 17 is provided at the periphery of the opening of the rotating drum 3, and a plurality of water supply contact portions 18 are integrated with the inner surface of the balancer 17 and at a position where the water discharged from the water injection cap 15 contacts. The water supply contact portion 18 is provided with an inclined surface 19. As shown in FIG. 3, the inclined surfaces x, y, and z of the inclined surfaces of the water supply contact portions 18 a, 18 b, and 18 c, the inclined surfaces 19 a, the inclined surfaces 19 b, and the inclined surfaces 19 c are directed toward the center of the rotary drum 3. Thus, x = 30 °, y = 45 °, and z = 60 °, which are different in inclination angle.

  The drum type washing machine of the present embodiment further includes a water level detecting means 20 for detecting the level of the washing water in the outer tub 2, a drain valve 21 for draining the water in the outer tub 2 to the outside, and a washing process. A control device 22 for controlling the operation until the rinsing process and the dehydrating process is arranged, the door body 6 is opened, the laundry is put into the rotating drum 3, and a predetermined amount of detergent is put into the washing start operation. By performing the above, the control device 22 controls a series of strokes.

  About the drum type washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  4 shows a water discharge state when the water supply hits the water supply contact portion 18a, FIG. 5 shows a water discharge state when the water supply hits the water supply contact portion 18b, and FIG. 6 shows a water supply contact portion 18c. The discharge state of water when it hits is shown respectively.

  After opening the door body 6 and putting laundry into the rotating drum 3, putting a predetermined amount of detergent into the detergent charging box 12 in the detergent case 9 and turning on the power switch (not shown), the control device When a start switch (not shown) provided at 22 is operated to start operation, the first water supply valve 7 operates to start water supply.

  The water passes through the first water supply hose 8 connected to the first water supply valve 7, flows into the detergent case 9, passes through the plurality of water injection holes 11 provided on the upper surface of the detergent case 9, and becomes detergent-like. The detergent 9 a poured onto the box 12 flows down with the shower-like water, passes through the second water supply hose 10 connected to the lower part of the detergent case 9, and flows out into the outer tub 2. When the water level detection means 20 detects that water has been supplied to such a level that the lowermost part of the rotary drum 3 is submerged, the operation of the first water supply valve 7 is stopped and the water supply is stopped.

  Next, the drive motor 5 is operated to rotate the rotating drum 3 at a rotation speed at which the laundry sticks to the inner peripheral surface of the rotating drum 3, thereby supplying water supplied into the outer tub 2. The detergent produces a fast water stream that dissolves efficiently and quickly.

  Thereafter, the second water supply valve 13 operates to supply water. Water passes through the third water supply hose 14 connected to the second water supply valve 13 and is discharged from the water injection cap 15 toward the front opening 16 of the rotary drum 3. Along with this water supply, the drive motor 5 operates and the rotary drum 3 is driven to rotate. Due to the rotation of the rotating drum 3, the water supply contact portion 18 is intermittently positioned in front of the water injection base portion 15, and water discharged from the water injection base portion 15 toward the inside of the rotary drum 3 is supplied to the water supply contact portion 18. By contacting the inclined surface 19, the water flows along the inclined surface 19, thereby changing the discharge direction.

When the water supply contact portion 18 is present in front of the water injection cap portion 15, as shown in FIGS. 4 to 6, the water flows along the inclined surface 19, thereby changing the discharge direction to the center direction of the rotary drum 3. The greater the inclination angle of the inclined surface 19, the more water is discharged toward the center of the rotating drum 3. Thus, since the water discharge direction changes in multiple stages, water can be contained in the entire laundry in the rotating drum 3. Further, by the rotation of the rotating drum 3, the stirring protrusion 4 provided on the inner peripheral surface of the rotating drum 3 hooks the laundry in contact with the inner peripheral surface of the rotating drum 3 and lifts it in the rotating direction. Since the laundry falls when its own weight is lifted up to a height that surpasses the inertia and centrifugal force associated with the rotation, the laundry accumulated in the rotating drum 3 is also lifted and moved one after another, dropped from above, Since the position of the laundry is changed, water can be supplied to the entire laundry quickly and evenly in a shorter time.

  Since the entire laundry contains water, the washing can be performed at an early stage, so that the washing performance can be improved.

  Thereafter, a rinsing process is performed. The drain valve 21 is operated, the detergent liquid in the outer tub 2 is drained, the drive motor 5 is operated, the rotary drum 3 is rotationally driven at high speed, intermediate dehydration is performed, and the detergent liquid is removed from the laundry. Next, the second water supply valve 13 operates to supply water. Water is discharged from the water injection cap 15 toward the inside of the rotary drum 3, and the drive motor 5 is operated in parallel with the water supply, so that the rotary drum 3 is rotationally driven. As in the washing process, water is discharged while changing the discharge direction by contacting the inclined surface 19 of the water supply contact portion 18 from the water injection cap portion 15 and the position of the laundry is also changed. Water can be supplied quickly and evenly, and the detergent component and water remaining in the laundry are exchanged, so that the rinsing performance can be improved. Then, a dehydration process is performed and washing is completed.

  In the above embodiment, the water supply contact portion 18 is provided on the balancer 17, but it may be provided directly on the periphery of the opening of the rotating drum.

  In the above embodiment, the example in which the rotation axis of the rotary drum 3 is inclined is shown. However, the same effect can be obtained when the rotation axis of the rotary drum 3 is arranged in the horizontal direction.

(Embodiment 2)
FIG. 7 is a plan view of the balancer of the drum type washing machine in the second embodiment of the present invention.

  In the present embodiment, as shown in FIG. 7, an inclined surface 23 continuously provided so as to gradually change the inclination angle at a position where water discharged from the water injection cap 15 on the inner surface of the balancer 17 comes into contact. The water supply contact part 18 which has is provided.

  With the above configuration, water discharged from the water injection cap 15 toward the inside of the rotary drum 3 comes into contact with the inclined surface 23 of the water supply contact portion 18, and the water flows along the inclined surface 23, thereby discharging the water. The direction changes. Since the inclined surface 23 is continuously provided so as to gradually change the inclination angle, the water discharge direction also changes continuously, water can be discharged over a wide area, and water can be discharged quickly and uniformly. The cleaning performance and the rinsing performance can be improved.

  As described above, the drum type washing machine according to the present invention changes the water discharge direction when the water discharged from the water supply means hits the water supply contact portion. In addition, it can be included in the entire laundry without any unevenness and can be washed at an early stage, so that the washing performance and rinsing performance can be improved, and the time can be shortened. The present invention can be widely applied to various devices and apparatuses that perform cleaning and processing by dissolving an agent in a liquid.

Sectional drawing of the drum type washing machine in Embodiment 1 of this invention Top view of the balancer of the drum type washing machine (A) AA sectional view of FIG. 2 (b) BB sectional view of FIG. 2 (c) CC sectional view of FIG. Sectional drawing of the drum type washing machine (water supply state when water hits the water supply discharge part 18a) Sectional drawing of the drum type washing machine (water supply state when water hits the water supply discharge part 18b) Sectional drawing of the drum type washing machine (water supply state when water hits the water supply discharge part 18c) The top view of the balancer of the drum type washing machine in Embodiment 2 of this invention Sectional view of a conventional drum-type washing machine

DESCRIPTION OF SYMBOLS 1 Washing machine housing | casing 2 Outer tub 3 Rotating drum 5 Drive motor 13 2nd water supply valve 15 Water injection cap part (water supply means)
16 Front opening 17 Balancer 18 Water supply contact 19 Inclined surface

Claims (3)

A rotating drum having a rotating shaft that is substantially horizontal or inclined, an outer tub that rotatably includes the rotating drum, a drive motor that rotates the rotating drum, and water supply from the front opening of the rotating drum into the rotating drum to a damping means, before Symbol a plurality points at the water contacting portion to the opening peripheral edge of the rotary drum which is water discharged from the water supply means has an inclined surface which contacts changing the water supply direction of the water, the water supply of the plurality locations The drum-type washing machine in which the inclined surface of the contact portion has at least two types of inclination angles . A rotating drum having a rotating shaft that is substantially horizontal or inclined, an outer tub that rotatably includes the rotating drum, a drive motor that rotates the rotating drum, and water supply from the front opening of the rotating drum into the rotating drum At least one water supply contact portion having an inclined surface that changes the water supply direction when the water discharged from the water supply device comes into contact with the water supply means. A drum-type washing machine that uses an inclined surface as a continuous surface with a gradually changing inclination angle . The drum type washing machine according to claim 1 or 2, wherein a substantially ring-shaped balancer is provided on a front surface of the rotating drum, and a water supply contact portion is integrally or integrally provided on an inner surface of the balancer .

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