JP2002119796A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce irregular rinse in a shower rinsing. SOLUTION: A plurality of shower nozzles are made in a showerhead 31 for performing the shower in a spinning tub 5. Water passage into clothes 102 stacked thick at a corner part is increased to reduce irregular rinsing by increasing the quantity of shower 36a and 36c sprayed toward an outer circumferential part of a bottom wall surface compared with the shower 36b sprayed toward a side wall surface of the spinning tub 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a washing machine.

[0002]

2. Description of the Related Art Rinsing in a washing machine is performed to discharge dirt components removed from clothes by washing from a washing tub so as not to adhere to the clothes again, and to remove and remove detergent adsorbed on the clothes.

There are three types of rinsing methods performed in a washing machine: pool rinsing, water rinsing, and shower rinsing. These rinsing methods are performed selectively or in combination depending on the application.

In the rinsing of the pool, a predetermined amount of water is supplied to a washing tub, and the rotating blades are rotated to stir the laundry to dilute dirt components and detergent contained in the laundry with water in the washing tub. It is a method of draining after having done.

[0005] Water rinsing is almost the same as reservoir rinsing, but is a method in which water is further injected during stirring. Since the water level in the washing tub rises due to the water injection, the rising part is drained by opening the drain valve. As a result, water is poured from the upper part of the laundry (tub), and rinsing water having a high detergent concentration is drained from the lower part of the laundry (tub). Is improved.

[0006] Shower rinsing is a rinsing method proposed as a method of rinsing with a small amount of water supply. The shower rinsing is a method in which water is applied to laundry while rotating a washing tub, and detergent components remaining inside are efficiently removed by rinsing water that penetrates and passes through the laundry. In order to perform the shower rinsing after the laundry is centrifugally dehydrated in advance, the laundry is distributed so as to be in close contact with the outer peripheral portion of the bottom wall from the side wall surface of the laundry tub, and the central portion of the bottom wall surface of the laundry tub. Is in a biased state where no laundry is present. Since the supply of the rinsing water is performed in accordance with the fall of water due to gravity, it is difficult to descend the laundry so as to uniformly penetrate the laundry, and uneven rinsing often occurs. If a large amount of rinsing water is supplied to reduce the uneven rinsing, the rinsing water is wasted.

[0007] Therefore, in order to increase the efficiency of shower rinsing, it is important that the rinsing water descends so as to uniformly penetrate the laundry. The washing machine described in Japanese Patent Application Laid-Open No. 7-241399 discloses a washing tub in which a plurality of water spouts set at a plurality of types of angles are sprayed in a substantially shower-like manner to spray water. By uniformly spraying water toward the corners (the portion where the side wall and the bottom wall are connected), rinsing water is saved and rinsing performance is improved.

[0008]

However, in the method of spraying the shower fountain uniformly on the surface of the laundry with a wide distribution,
As shown in FIG. 13, when the shower fountain 104 is evenly sprayed from the shower head 103 on the surface of the laundry 102 which is biased along the side wall surface in the washing tub 101 by centrifugal dehydration, the surface on the surface side of the laundry 102 is removed. The rinsing water penetrates well into the b section, but the amount of permeation into the inside c section is extremely small. This is because there is a difference in the amount of shower fountain per unit volume of the laundry 102, and the amount of water per unit volume is particularly small because the amount of the laundry increases particularly at the corners of the washing tub 101.

As described above, when a portion where the water does not sufficiently penetrate into the laundry 102 occurs, it is difficult to push out the detergent in the portion, and uneven rinsing occurs. Such a phenomenon is caused by the fact that the larger the amount of the laundry 102 is,
The layer of the laundry 102 leaning to the corners of the area becomes thicker, which is notable.

It is an object of the present invention to provide a washing machine capable of performing shower rinsing with a small amount of rinsing water and less rinsing unevenness.

Another object of the present invention is to provide a washing machine capable of performing shower rinsing with a small amount of rinsing water and little unevenness in rinsing without being affected by the amount of laundry.

It is still another object of the present invention to provide a washing machine capable of reducing a shower fountain from scattering outside a washing tub.

[0013]

SUMMARY OF THE INVENTION The present invention is directed to a shower rinsing in which a shower fountain is sprayed into a rotating washing tub. By increasing the amount of the shower fountain spouting, the flow of water into the laundry stacked thick at the corners is increased, and the uneven rinsing is reduced.

Further, a shower head for spraying rinsing water toward the side wall surface and the bottom wall surface of the washing tub is provided, and the shower head is moved forward and backward by tap water pressure, so that when water is supplied, the shower head moves toward the center of the washing tub. I made it into the shower fountain.

Specifically, a cylindrical washing tub having a bottom which is rotatably installed in an outer tub, a rotating blade which is rotatably installed at the center of the bottom of the washing tub, the washing tub and the rotating wing A driving device for rotating the washing tub, a water supply means for supplying washing water into the washing tub, and a drain means for draining the washing water in the washing tub, and rotating the washing tub with the drain means in a drained state. In a washing machine in which a rinsing step is performed by spraying rinsing water into the washing tub, the water supply means sprays the outer rim of a bottom wall surface in the washing tub in the rinsing step. The flow rate of the rinsing water is higher than the flow rate of the rinsing water sprayed toward the side wall surface of the washing tub.

The water supply means includes a first fountain port for spraying rinsing water toward an outer peripheral portion of a bottom wall surface in the washing tub, and a second fountain port for spraying rinsing water toward a side wall surface of the washing tub. It is characterized by having two fountains.

A bottomed cylindrical washing tub rotatably installed in the outer tub, a rotating wing rotatably installed at the center of the bottom of the washing tub, and the washing tub and the rotating wing are rotationally driven. A driving device, a water supply means for supplying the washing water into the washing tub, and a drain means for draining the washing water in the washing tub, wherein the drain means is in a drained state while rotating the washing tub. In a washing machine in which a rinsing step is performed by spraying rinsing water into a washing tub, the water supply means includes a first water supply for supplying water in a washing step of storing water in the washing tub and a rinsing step. Means for supplying water in a rinsing step performed while rotating the washing tub.
A first shower fountain for spraying rinsing water toward a side wall surface of the washing tub, and a rinsing water toward an outer peripheral portion of a bottom wall surface of the washing tub. And a second shower fountain for spraying water.

The second water supply means includes a shower head having a plurality of shower fountains opening toward the wall of the washing tub, wherein the shower fountains have different shower fountain angles, and The shower fountain is distributed such that the flow rate of the shower fountain to the outer peripheral portion of the bottom wall surface of the tank is maximized.

Further, the second water supply means is characterized in that a shower fountain is switched according to the amount of laundry.

Also, a cylindrical washing tub having a bottom which is rotatably installed in an outer tub, a rotating blade which is rotatably installed at the center of the bottom of the washing tub, and the washing tub and the rotating wing are rotationally driven. A driving device, a water supply means for supplying the washing water into the washing tub, and a drain means for draining the washing water in the washing tub, wherein the drain means is in a drained state while rotating the washing tub. In a washing machine in which a rinsing step is performed by spraying rinsing water into a washing tub, the water supply means includes a first water supply for supplying water in a washing step of storing water in the washing tub and a rinsing step. Means for supplying water in a rinsing step performed while rotating the washing tub.
The second water supply means includes a shower head that sprays rinsing water toward the side wall surface and the bottom wall surface of the washing tub, and the shower head moves forward and backward by tap water pressure. The washing tub is advanced toward the center.

The shower head has a first shower fountain for spraying rinsing water toward a side wall surface of the washing tub and a second shower fountain for spraying rinsing water toward an outer peripheral portion of a bottom wall surface of the washing tub. It is characterized by having two shower fountains.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external perspective view of a fully automatic washing machine showing an embodiment of the present invention, and FIG.
It is a longitudinal side view which follows the -A line.

In this fully automatic washing machine, an outer tub 4 made of synthetic resin is suspended by a suspension rod 2 and a vibration isolator 3 made of a coil spring or elastic rubber in an outer frame 1 made of steel plate. Outer tub 4
Is supported so as to be hung from four corners of the upper part of the outer frame 1 by four sets of the hanging rods 2 and the vibration isolator 3. In the outer tank 4,
A washing and dewatering tub (hereinafter referred to as a washing tub) 5 on a bottomed cylinder made of stainless steel is rotatably provided. The washing tub 5 has a large number of dehydration holes 5a on a side wall, and a rotatable blade 6 is rotatably provided at the center of the bottom.

The driving device for rotatingly driving the washing tub 5 and the rotary wings 6 includes a motor 7 and a transmission means including a pulley 8 a and a belt 8 b for transmitting the rotation of the motor 7 to the washing tub 5 and the rotary wings 6. And a clutch device 9 for rotating only the rotating blade 6 during the washing and rinsing steps, and integrally rotating the washing tub 5 and the stirring blade 6 during the rinsing and dewatering steps, and a clutch solenoid 9a for switching between them. The driving device includes a support plate 1 made of steel plate on a lower side of a bottom wall of the outer tank 4.
Attach using 0.

In the washing step and the rinsing step, the driving device stops the washing tub 5 and repeatedly rotates the rotating blades 6 in a clockwise direction (forward direction) and a counterclockwise direction (reverse direction). Then, in the dehydration step, the washing tub 5 is rotated at a high speed in one direction.

A water level sensor tube 12 for transmitting the water pressure (water level) in the outer tub 4 to a water level sensor 11 is connected to an air trap 4 a provided on a side wall near the bottom of the outer tub 4. A drain hose 14 is connected to a drain hole 4b provided in the bottom wall via a drain device (electromagnetic valve) 13 for controlling drain of washing water. The washing water is collected in the outer tub 4 by closing the drainage device 13, and discharged to the outside of the washing machine through the drainage hose 14 by opening the drainage device 13.

A top cover 15 is provided above the outer frame 1. The top cover 15 includes a clothes input port 15a for inputting laundry and a rear storage box 15b for storing water supply components such as a water tap 17 and a water supply solenoid valve, a detergent input channel box, and a finishing agent input channel box. A front operation box 15c in which electric components such as a control circuit using a microcomputer are housed and an operation button 20 is provided, and a lid 16 made of synthetic resin is opened and closed so as to open and close the clothing inlet 15a. Attach.

An operation panel 18a is mounted on the upper surface of the front operation box 15c, and a control circuit 18b on which a microcomputer or the like is mounted is provided below the operation panel 18a. Operation panel 18a
, A power switch 19, various operation buttons 20, various displays 21 and the like are installed so that a user can operate the washing machine with the operation buttons 20 and check the state on the display 21.

Here, the configuration inside the rear storage box 15b will be specifically described. FIG. 3 is a schematic diagram of a water supply path of the fully automatic washing machine. FIG. 4 is a vertical cross-sectional side view showing the rear storage box 15b cut at the position of the water injection flow path box 30, and FIG. 5 is a cross-sectional plan view along the line BB in FIG.

A water tap 17 for connecting a hose from a water tap or the like, a water supply solenoid valve 22 following the tap 17, and a detergent input toward the clothes input port 15 a so that washing water flows down into the washing tub 5. Water injection channel box 30 having an open water supply space 30a
And a shower head 31 for spraying rinsing water into the washing tub 5
Are stored in the rear storage box 15b.

An inclined channel 32a inclined in a drawer type box
Is formed in the water supply passage box 30.
Is installed in the detergent supply water supply space 30a so as to be able to be inserted and withdrawn, and the detergent 110 is charged (placed) on the inclined flow path 32a in a pulled-out state. The water injection channel box 30 includes a watering chamber 30b so as to be positioned above the inclined channel 32a of the pushed detergent input channel box 32. The sprinkling chamber 30b is provided with a large number of sprinkling holes 30c on the bottom wall of the sprinkling chamber 32 facing the upper side of the inclined flow path 32a of the detergent input flow path box 32.

The water supply electromagnetic valve 22 has a built-in switching valve, and switches water supply to a water supply path 33 leading to the shower head 31 and a water supply path 34 leading to the sprinkling room 30b in accordance with a washing process.

The shower head 31 is installed so as to be positioned at the lower opening edge of the detergent-supplying water supply space 30a so that the shower fountain is opened toward the washing tub 5 and the water supply passage 3 is provided.
3 is housed in the detergent input water supply space 32a. This configuration realizes effective use of the limited space. The shower head 31 is installed so as not to protrude into the clothes inlet 15a so as not to hinder the loading and unloading of laundry.

The soft finishing agent charging box 35 is provided alongside the detergent charging channel box 32, and is installed integrally with the detergent charging channel box 32 so as to be able to be inserted into and removed from the water injection channel box 30. The soft finishing agent box 35 has a configuration in which the soft finishing liquid agent injected therein flows out into the detergent input water supply space 30a of the water injection channel box 30 by a siphon action, and has the same upper portion as the watering room 30b. Finishing agent injection room (not shown)
The siphon mechanism is operated by supplying water from the switching valve of the water supply electromagnetic valve 22 to the soft finish box 35 via the finish water injection chamber at the time of final rinsing water supply, so that the soft finish is supplied to the water supply flow path box 30. It flows out into the detergent supply water space 30a and flows into the washing tub 5 together with the rinsing water.

The water supply in the washing step and the pool rinsing step is called normal water supply, and is indicated by broken arrows. For normal water supply, the switching valve of the water supply electromagnetic valve 22 is connected to the watering room 30b of the water injection flow path box 30.
This is performed by switching to the water supply path 34 that leads to

At the start of washing, the detergent input channel box 32 and the soft finishing agent input box 35 are pulled out, the powder detergent 110 is injected into the inclined channel 32a, and the soft finishing liquid agent is injected into the soft finishing agent input box 35.

The washing water that has flowed into the watering chamber 30b of the water injection channel box 30 by starting the normal water supply is supplied to the watering hole 30.
c, flows down into the inclined flow path 32a of the detergent input flow path box 32 in a shower shape, and falls on the powder detergent 110, and the powder detergent 1
Dissolve 10 and pour out. By allowing the washing water to flow down into the inclined flow path 32a in a shower shape, the powder detergent 110 is prevented from remaining undissolved. Sufficient dissolution of the powder detergent 110 leads to improvement in detergency and rinsing performance.

The washing water in which the detergent is dissolved is supplied to the inclined flow path 32
a, and flows into the washing tub 5 through the detergent input water supply space 30a. It is preferable that the bottom surface of the water injection channel box 30 is inclined so that water or detergent does not remain in the detergent input water supply space 30a. In addition, if there are irregularities on the bottom surface of the water injection flow channel box 30, water and detergent easily remain in the detergent supply water supply space 30a along the irregularities, so that the shower head 31 and the water supply passage 3
It is preferable to provide a cover or the like on 3 to reduce unevenness. If there is enough space, the shower water supply channel 33 can be
By disposing it outside the bottom of the zero, it is possible to eliminate unevenness on the bottom and suppress the washing water from remaining.

On the other hand, the shower water in the shower rinsing step flows as indicated by the solid arrow. The switching valve of the water supply electromagnetic valve 22 is switched to the water supply path 33 leading to the shower head 31. When shower water supply is started, the water supply is
The shower fountain 36 that flows through the shower head 31 through the shower fountain and spouts into the washing tub 5 is formed.

FIG. 6 is a perspective view showing the shape of one shower fountain of the shower head 31 with a part thereof cut away. The shower head 31 has a shower fountain 4 in a V-shaped cut groove 41 formed by cutting out an end face 40.
By opening 2, the shower fountain blows out in a fan shape. The ejection angle, flow rate, and fountain particle size can be set by the depth D of the cut groove 41, the opening angle α, and the value of the diameter of the shower fountain port 42. For example, as the opening angle α of the cut groove 41 is larger, the shower fountain form has a smaller fan-shaped ejection angle.

Other shapes of the shower fountain 42 include:
A configuration in which a large number of small holes are provided, a configuration in which water is emitted radially (conically) by a swirling flow, and the like are considered. In addition, shower fountain 36
It is better for the particle size to be as small as fog. By reducing the particle size, the splash of water to the outside of the washing tub 5 can be reduced.

In this embodiment, the shower water is supplied by jetting a plurality of fan-shaped shower fountains 36a to 36c from the shower head 31, as shown in FIG.
As shown in FIG. 8, the three shower heads 31a
To 31c are combined side by side radially. Here, FIG. 7 is a side view showing a form of a shower fountain in shower rinsing, and FIG. 8 is a perspective view of the shower head.

Each of the shower heads 31a to 31c has
Each of the shower fountains 42a to 42 has substantially the same flow rate.
c is provided. The shower head portion 31b is configured to jet the shower fountain 36b substantially uniformly at a wide jet angle toward substantially the entire area in the height direction of the outer peripheral edge of the bottom wall surface of the washing tub 5 and the side wall surface. The shower fountains 36a and 36c are configured to jet the shower fountains 36a and 36c substantially uniformly at a narrow jet angle toward the outer peripheral edge of the bottom wall surface of the washing tub 5. As a result, the shower fountain amount of the rinsing water is reduced by the washing tub 5.
The outer peripheral edge of the bottom wall surface is increased with respect to the side wall surface. The number of shower heads is not limited to three, and may be arranged side by side in a straight line.

The spray area of the rinsing water by the shower fountain can be narrowed in the same manner as the jetting angle is narrowed by inclining the direction in which the cut groove 41 extends in the rotation direction. In the above-described embodiment, the kerf 41
Is formed so as to extend in the vertical direction with respect to the rotation direction, so that a fan-shaped shower fountain that spreads in the vertical direction is jetted out. The spread direction of the shower fountain becomes narrower when viewed in the vertical axis direction, and the shower fountain squirts so as to fall intensively on the outer peripheral edge of the bottom portion of the washing tub 5.
This method is effective in all the embodiments.

Next, the operation of the fully automatic washing machine will be described.

Regarding the washing process, no matter what washing course is selected, water is supplied through the same water supply path. In the rinsing step, the water supply path is changed by selecting a rinsing course.
Here, the operation of the washing course set by the selection button 20 so as to perform shower rinsing and finally to perform dehydration after performing pool rinsing once will be described.

The user puts the laundry 102 into the washing tub 5, presses the power switch 19, sets a washing course (sets washing, rinsing, and dehydration conditions), and operates a start button to automatically wash the laundry. To start.

First, the microcomputer of the control circuit 18b drives the electric motor 7 to rotate the rotor 6 in the forward direction and stops the rotation. The microcomputer 102 controls the laundry 102 in the washing tub 5 based on the damping characteristic of the inertial rotation at that time. The amount of washing is detected to determine the amount of washing water suitable for the laundry 102, and the amount of detergent corresponding to the amount of washing water is determined and displayed on the display 21.

Then, when the user puts the indicated amount of the powdered detergent 110 into the inclined flow path 32a of the detergent input flow path box 32 and operates the start button again, the microcomputer operates the switching valve of the water supply electromagnetic valve 22. To the normal water supply side to open the waterway. As a result, tap water is supplied to tap 1
7 through the water supply solenoid valve 22 and the water supply path 34 to the watering room 30b of the water injection channel box 30, and through a number of water holes 30c provided in the bottom wall of the watering room 30b, the detergent input channel box 32
Of the powder detergent 11 flowing down into the inclined flow path 32a in a shower shape.
0, and the detergent supply water supply space 30 of the water supply passage box 30 is discharged.
a and flows into the washing tub 5 and accumulates in the washing tub 5 (outer tub 4).

The microcomputer has a water level sensor 11
When it is detected that a specified amount of water has been supplied to the washing tub 5 based on the detection signal from the controller 5, the water supply electromagnetic valve 22 is closed to stop water supply. Then, the washing process control for stirring the laundry 102 by driving the electric motor 7 to rotate the rotating blades 6 in the forward and reverse directions is executed.

When the microcomputer finishes the washing process, the microcomputer opens the drainage device 13 and drains the washing water in the washing tub 5 from the drainage port 4b through the drainage hose 14. When the drainage is completed, intermediate dehydration in which the washing tub 5 is rotated at a high speed is performed, and the process proceeds to the rinsing process control.

The rinsing step is a shower rinsing method. First, the washing tub 5 is rotated. At this time, the rotation speed of the washing tub 5 may be any rotation speed at which the rinsing water sprayed by the shower fountains 36 a to 36 c can obtain the centrifugal force required to pass through the laundry 102. Of course, the rotation of the intermediate dehydration in the previous step may be maintained without stopping.
Then, the switching valve of the water supply electromagnetic valve 22 is set to the shower head 31.
The water channel is opened by switching to the water supply channel 33 leading to the drainage channel. At this time, the drainage device 13 is kept open.

Thus, water is supplied from the shower head 31.
Are sprayed into the washing tub 5 so as to form shower fountains 36a to 36c. After spraying a predetermined amount of rinsing water, the water supply electromagnetic valve 22 is closed, and the above-described intermediate dehydration is performed. The shower rinsing may be performed by changing the amount of shower water or the number of times of shower rinsing according to the amount of the laundry 102.

Here, the form of the shower fountains 36a to 36c will be described. As described above, in the present embodiment, the two shower fountains 42a and 42c of the shower head 31 jet the shower fountains 36a and 36c having a narrow jet angle toward the outer peripheral edge of the bottom wall surface of the washing tub 5. The shower fountain 42b is a shower fountain 3 having a wide jetting angle.
6b is sprayed toward the outer peripheral edge of the bottom wall surface of the washing tub 5 and substantially the entire area in the height direction of the side wall surface. Therefore, the shower fountain 36
The amount of rinsing water sprayed on the laundry 102 by a to 36c sufficiently penetrates into the inside of the laundry 102 which is biased so as to be thickly stacked on the corner of the washing tub 5 by the intermediate dehydration and passes through the laundry 102. The outer peripheral edge of the bottom wall of the washing tub 5 is increased like water, and the detergent contained in the laundry 102 located at the corner of the bottom wall of the washing tub 5 as well as the side wall of the washing tub 5 can be pushed out. Yes, rinsing performance is improved.

After the intermediate dehydration in the shower rinsing is completed, the microcomputer closes the drainage device 13 to perform pool rinsing, switches the switching valve to the normal water supply side, opens the water supply electromagnetic valve 22, and starts water supply. Since the reservoir rinsing at this time is the final rinsing, the switching valve of the water supply solenoid valve 32 switches to a water supply path that also supplies water to the soft finishing agent charging section 35. After the end of the pool rinsing, final dehydration is performed to complete the washing.

Next, another embodiment of the shower head (shower water supply) will be described. FIG. 9 is a side view showing a form of a shower fountain in this embodiment, and FIG.
FIG. 3 is a perspective view of a shower head.

The shower fountain in this embodiment is:
As shown in FIG. 9, a shower fountain 37a spouts toward the outer peripheral edge of the bottom of the washing tub 5, and a shower fountain 37b spouts toward the region from the center to the corner of the side wall of the washing tub 5. And three fountains of a shower fountain 37c which squirts upward from the center of the side wall surface of the washing tub 5. The fountain flow rate is the largest in the shower fountain 37a, the middle in the shower fountain 37b,
7c is minimized. By distributing the fountain flow rate in this manner, the rinsing water can sufficiently permeate not only the upper region of the side wall surface of the washing tub 5 but also a large amount of the laundry 102 located at the corner of the bottom surface of the washing tub 5. As a result, the detergent contained in the laundry 102 located at the corner can be pushed out to improve the rinsing performance.

The shower fountains 37a to 37c as in this embodiment can be formed by a shower head 71 having three shower fountain ports 71a, 71b, 71c as shown in FIG. Each of the shower fountains 71a to 71c is formed so that the spread angle of each of the shower fountains 37a to 37c is narrow, and is installed in a different direction.

In the shower head 71, as shown in FIG. 10, the shower fountains 71a to 71c may be arranged in a horizontal line, or the shower fountains 71a to 71c may be directed in different directions. The shower fountain is 5
The number of shower fountains for performing shower fountains toward the outer peripheral edge of the bottom of the washing tub 5 may be increased.

It is preferable to control the shower fountains 71a to 71c to be used in accordance with the amount of the laundry 102. For example, when the amount of the laundry 102 is small, the laundry 102 is not distributed to the upper region of the washing tub 5. Therefore, by controlling to stop the shower fountain 37 c directed to the upper region of the side wall of the washing tub 5, Waste water can be reduced. Such shower fountain control is realized by a configuration in which a switching valve that switches a water supply path to the shower fountain 71c is provided in the water supply electromagnetic valve 22 that controls water supply to the shower head 71 or a configuration in which the direction of the shower head is mechanically changed. can do. The detection of the amount of the laundry 102 can be realized by using a detection result performed to determine the amount of washing water and the amount of detergent at the start of washing.

Another embodiment of the shower head (shower water supply) will be described. FIG. 11 is a side view showing a form of a shower fountain according to this embodiment.
FIG. 3A is a longitudinal side view (a) showing the water injection channel box cut at the position of the shower head, and a perspective view (b) showing the shower head with a part cut away.

In shower rinsing, it is desirable that particles of the shower fountain sprayed on the laundry are as small as possible. However, since the shower rinsing is performed while rotating the washing tub, a swirling flow (wind) of air is generated in the washing tub, and therefore, the shower rinsing is performed from the shower head located higher than the upper end of the washing tub. It is difficult to properly spray a small shower fountain on the laundry at the bottom of the tub. In addition, since the momentum of the shower fountain changes due to a change in tap water pressure, it is more difficult to accurately spray water. Furthermore, fine particles of the shower fountain may be blown up and scattered out of the tub by the upward air current generated along the side wall of the washing tub. This still another embodiment is an embodiment capable of solving such a problem.

In this embodiment, the shower head 81 is provided at the tip of the telescopic water supply channel 50,
At the time of shower water supply, as shown in FIG. 11, the expandable telescopic water supply channel portion 50 is extended so that the shower head 81 enters the washing tub 5 so that the shower head 81 is placed on the laundry 1.
02 and the shower fountain 38 is generated to make the laundry 1
02 is easily sprayed on a desired area, and even when the tap water pressure is low, the shower fountain 38 can be surely dropped onto the laundry 102. Further, the phenomenon that fine particles of the shower fountain 38 are soared by the wind and scattered outside the tank can be suppressed. When the laundry 102 is taken in and out, the telescopic water supply path 50 is contracted to move the shower head 81 backward so that the laundry 102 is not obstructed.

As shown in FIG. 12, a telescopic water channel 50 for realizing such a shower fountain includes a cylindrical water channel 51 and a piston water channel slidably inserted into the cylinder water channel 51. 52, and a coil spring 53 for retracting the piston-type water passage 52 so as to be accommodated in the cylinder-type water passage 51.

Normally (when water is not supplied), the telescopic water supply channel 50 is in a contracted state in which the piston type water channel 52 is drawn into the cylinder type water channel 51 by the extension force of the coil spring 53, and the shower head 81 is retracted. ing. Then, when a water supply state is reached during shower rinsing, water is supplied from the water supply passage 33 into the cylinder-type water passage 51, and the piston-type water passage 52 is extruded so as to compress the coil spring 53 by tap water pressure, and expands. 8
1 is advanced into the washing tub 5 to generate the shower fountain 38.

When the shower rinsing is completed and the water supply is stopped, the water pressure in the cylinder-type water passage 51 decreases, and the piston-type water passage 52 is drawn into the cylinder-type water passage 51 by the extension force of the coil spring 53. Shrink,
The shower fountain is stopped with the shower head 81 retracted.

The coil spring 51 contracts even when the tap water pressure at the time of water supply is low, and advances the piston type water passage 52, and when the water supply is stopped, the piston type water passage 52 is connected to the cylinder type water passage 5
One having a spring constant that can be drawn into 1 is used. The shower head 81 is installed so as not to protrude into the clothes inlet 15a in the retracted state. Further, as described above, the shower head 81 may be configured to generate a plurality of shower fountains or may be configured to generate one shower fountain.

The water injection channel box 30, detergent input channel box 32, and soft finishing agent input box (not shown) are configured in the same manner as in the above-described embodiment.

The shower water supply described above may be performed together with the normal water supply in the water supply in the washing step and the pool rinsing. At this time, it is better to supply water while rotating the washing tub 5 at a low speed. Thereby, the penetration of the washing water into the laundry 102 is increased, and the rinsing performance is improved.

Further, in the shower head described above, since the flow rate and the jet angle change due to the change of the tap water pressure, the use of a nozzle capable of shower fountain accurately even at a low water pressure or the spraying at a low water pressure can be performed accurately. It is better to make improvements such as setting the installation angle. It is also conceivable to provide a shower head with a constant water pressure by providing a pressurizing pump.

According to each of the embodiments described above, a large amount of shower fountain is sprayed on the outer peripheral edge of the bottom of the washing tub 5, so that the washing tub 5 having a large thickness can be stacked on the corner of the washing tub 5. The rinsing water can be sufficiently and permeated into the object 102 without waste, and high efficiency of shower rinsing and water saving can be realized.

[0073]

According to the present invention, in the shower rinsing, a large amount of rinsing water is sprayed toward the outer peripheral edge of the bottom portion of the washing tub. It can be carried out.

Also, by controlling the shower fountain flow rate according to the amount of laundry, it is possible to perform shower rinsing with a small amount of rinsing water and little rinsing irrespective of the amount of laundry.

Further, at the time of shower rinsing, the shower fountain can be reduced by scattering the shower fountain outside the washing tub by moving the shower head into the washing tub and performing shower fountain.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a fully automatic washing machine showing an embodiment of the present invention.

FIG. 2 is a side view of the fully automatic washing machine shown in FIG.

FIG. 3 is a schematic diagram of a water supply path in the fully automatic washing machine shown in FIG.

FIG. 4 is a vertical sectional side view of a rear storage box in the fully automatic washing machine shown in FIG. 1;

5 is a cross-sectional plan view of the rear storage box shown in FIG. 4 taken along line BB.

FIG. 6 is a perspective view showing a shape of one shower fountain of a shower head in the fully automatic washing machine shown in FIG.

FIG. 7 is a side view showing a form of a shower fountain in shower rinsing in the fully automatic washing machine shown in FIG.

FIG. 8 is a perspective view of a shower head in the fully automatic washing machine shown in FIG.

FIG. 9 is a side view showing a form of a shower fountain according to another embodiment of the present invention.

FIG. 10 is a perspective view of a shower head for realizing a shower fountain in the embodiment shown in FIG.

FIG. 11 is a side view showing a form of a shower fountain in still another embodiment of the present invention.

FIG. 12 is a vertical side view (a) showing the water injection channel box in the embodiment shown in FIG. 11 cut at the position of the shower head, and a perspective view (b) of the shower head shown with a part cut away. is there.

FIG. 13 is a side view showing a conventional shower rinsing mode.

[Explanation of symbols]

4 ... Outer tank, 4a ... Air trap, 4b ... Drain hole, 5 ...
Washing and dewatering tub (washing tub), 5a: dehydration hole, 6: rotary wing,
13 drainage device, 14 drainage hose, 15 top cover, 15a clothing inlet, 15b rear storage box, 17
Water tap, 22: solenoid valve for water supply, 30: water supply channel box, 30
a: detergent supply water supply space, 30b: watering room, 31: shower head, 31a to 31c: shower head part, 32
... detergent supply channel box, 32a ... inclined channel, 33, 34 ... water supply channel, 36, 36a-36c ... shower fountain, 42 ... shower fountain.

Continued on the front page (72) Inventor Yoshinote Ota 502 Kandachi-cho, Tsuchiura-shi, Ibaraki Pref. Machinery Research Laboratories, Hitachi, Ltd. (72) Inventor Toshiyasu Kanano 1-1-1, Higashitaga-cho, Hitachi-shi, Ibaraki Hitachi Taga Electronics, Inc. (72) Inventor Takami Koyama 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Pref. Hitachi Tag Electronics Co., Ltd. (72) Isao Hiyama 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture No. F-term in Hitachi Taga Electronics Co., Ltd. (Reference) 3B155 AA03 AA17 AA18 BA26 BB09 CA06 CB06 FA15 FA22 KA20 LB29 MA01 MA02

Claims (7)

[Claims] 1. A cylindrical washing tub having a bottom which is rotatably installed in an outer tub, a rotating blade which is rotatably installed at the center of the bottom of the washing tub, and the washing tub and the rotating wing are rotationally driven. A driving device, a water supply means for supplying washing water to the washing tub, and a drain means for draining the washing water in the washing tub,
A washing machine in which the rinsing step is performed by spraying rinsing water into the washing tub while rotating the washing tub with the draining means in a draining state; A washing machine characterized in that a flow rate of rinsing water sprayed toward an outer peripheral portion of a bottom wall surface in the tub is larger than a flow rate of rinsing water sprayed toward a side wall surface portion of the washing tub. 2. A washing machine according to claim 1, wherein said water supply means includes a first fountain port for spraying rinsing water toward an outer peripheral portion of a bottom wall surface in said washing tub, and a rinsing water toward a side wall surface of said washing tub. A washing machine comprising a second fountain port for spraying water. 3. A washing tub having a bottom and a cylindrical shape rotatably installed in an outer tub, a rotating blade installed rotatably at the center of the bottom of the washing tub, and rotating the washing tub and the rotating blade. A driving device, a water supply means for supplying washing water to the washing tub, and a drain means for draining the washing water in the washing tub,
In a washing machine in which the rinsing step is performed by spraying rinsing water into the washing tub while rotating the washing tub with the draining means in a draining state, the water supply means supplies water into the washing tub. A first water supply unit for supplying water in a washing step and a rinsing step performed by storing, and a second water supply unit for supplying water in a rinsing step performed while rotating the washing tub, wherein the second water supply unit includes: A first shower fountain for spraying rinsing water toward a side wall of the washing tub; and a second shower fountain for spraying rinsing water toward an outer peripheral portion of a bottom wall surface of the washing tub. Washing machine. 4. The washing machine according to claim 3, wherein the second water supply means includes a shower head having a plurality of shower fountains that open toward the wall surface of the washing tub, and each of the shower fountains has a shower fountain angle. A washing machine characterized in that the shower fountain flow rate to the outer peripheral portion of the bottom wall surface of the washing tub is distributed so as to be maximum. 5. The washing machine according to claim 4, wherein said second water supply means switches a shower fountain according to an amount of laundry. 6. A washing machine having a bottomed cylindrical washing tub installed rotatably in an outer tub, a rotating wing installed rotatably at the center of the bottom of the washing tub, and rotating the washing tub and the rotating wing. A driving device, a water supply means for supplying washing water to the washing tub, and a drain means for draining the washing water in the washing tub,
In a washing machine in which the rinsing step is performed by spraying rinsing water into the washing tub while rotating the washing tub with the draining means in a draining state, the water supply means supplies water into the washing tub. A first water supply means for supplying water in a washing step and a rinsing step to be carried out, and a second water supply means for supplying water in a rinsing step performed while rotating the washing tub, wherein the second water supply means comprises: A shower head that sprays rinsing water toward the side wall surface and the bottom wall surface of the washing tub, the shower head moves back and forth by tap water pressure, and when water is supplied, the shower head advances toward the center of the washing tub. A washing machine characterized by the following. 7. A washing machine according to claim 6, wherein said shower head sprays rinsing water toward a side wall surface of said washing tub.
And a second shower fountain for spraying rinsing water toward an outer peripheral portion of a bottom wall surface of the washing tub.