JPS6080495A - Washer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a washing machine in which a hollow cylindrical body or a chevron-shaped protrusion is provided at the center of rotation on a rotor blade and is driven forward and backward in an extremely short cycle.

[Background of the invention]

In recent years, instead of rotary blades that rotate at high speeds in forward and reverse directions over long periods, rotary blades that rotate at low speeds in forward and reverse directions over short periods of time and have hollow cylinders or chevron-shaped protrusions at the center of rotation have been used in washing machines. is being attempted. However, when the rotor blades are rotated at low speeds in forward and reverse directions in short cycles, the cloth moves more slowly than in a spiral type in which the blades rotate at high speeds in forward and reverse directions over long cycles, giving the impression that it is impossible to wash at first glance. Even if the washing and cleaning ability is sufficient, for those who are used to the powerful movement of the spiral type cloth, the method in which the blades turn several times around, pause, and then rotate several times to the right is difficult to understand during this pause. Because the movement of the fabric stops completely, the fabric often appears to be stagnant, which is often the subject of complaints.

[Purpose of the invention]

An object of the present invention is to provide an impression of strong cloth movement without giving a feeling of stagnation in cloth movement even when rotating a rotary blade provided with a hollow cylindrical body or a chevron-shaped protrusion at a low speed in a short cycle in forward and reverse directions, and to provide a desired washing effect. The purpose is to increase the cleaning rate by increasing the cleaning action time within the time.

[Summary of the invention]

The gist of the present invention is to provide a washing tub, a rotating blade provided at the inner bottom of the washing tub, a hollow cylindrical body or a protrusion provided at the center of rotation on the rotating blade, and a mechanism for integrally fixing the rotating blade in the normal rotation direction. In a system where the reverse cycle is repeated in short periods of 10 seconds or less, the rotation angle of the rotor blade for one start of forward or reverse rotation is 1.5 rotations (540 degrees) to 3.5 rotations (1260 degrees). Adjust the startup time so that the motor stops running for at least 0.2 seconds, which is the time required for the motor to switch from forward rotation to reverse rotation or vice versa due to its inertia.
The purpose is to eliminate the feeling of stagnation in the movement of the cloth in the following short time periods.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail based on the drawings of an embodiment in which the present invention is applied to a two-tank type pouring machine having a rectangular planar shape.
In the figure, the two-tub washing machine includes an outer frame 1 made of a steel plate, a base 2 made of synthetic resin on which the outer frame 1 is placed, and a washing tub 3 made of synthetic resin housed within the outer frame 1. A water receiving tank 4 made of synthetic resin is formed integrally with the washing tub 3 and is housed within the outer frame 1, a dewatering tank 5 is housed within the water receiving tank 4, and a water receiving tank 4 is provided at the center of the bottom of the washing tub 3. A rotary blade 6, a rotation control mechanism 7 that controls the rotation of the rotary blade 6, a washing motor 8 that serves as a drive source for the rotary blade 6, a dehydration motor 9 that serves as a drive source for the dehydration tank 5, and an outer frame. 1. Operation panel box 11 is removably provided above using the upper opening edges of the washing tank 3 and water receiving tank 4.
It is equipped with

The planar shape of the washing tub 3 is approximately square when viewed from above.

The ratio b/a of the horizontal dimension and vertical dimension a of the individual washing tank 3 is 0.9 to
Set to 1.1.

The rotary blade 6 includes a disk-shaped blade main body 12 and a 14 main body 12.
It includes a hollow cylindrical body 13 protruding from the center above the center of rotation and a guide cylinder 14 provided within this hollow cylindrical body 13. The wing body 12, the hollow cylinder 13, and the guide cylinder 14 are
It is made of synthetic resin.

(See FIG. 5) The cross-sectional shape of the hollow cylindrical body 13 is not limited to a circle, and may be a polygon such as a triangle or a square. It has three main wings 12a arranged radially when viewed from each other, and also has a pumping action. The main wing 12a has a width W of 10wn~
within the range of 40, and the height dimension H is 20TrrIn~6
Set to a range of 0. The ridge of the main wing 12a is made into a smooth curved surface, as shown in FIG. The fan-shaped portion 12b of the wing body 12 is an inclined surface that rises toward the hollow cylindrical body 13, as shown in FIG. The inclination angle θl of this inclined surface is 5
Set in the range of °~20 °. The apex angle θ2 formed on the extension of the inclined surface is set in the range of 170° to 140°. The height H of the main wing 12a becomes smaller as it approaches the hollow cylinder 13 because the fan-shaped portion 12b is inclined.

As shown in FIGS. 5, 6, 8, and 9, three auxiliary R13a are arranged radially around the outer circumference of the hollow cylindrical body 13. The auxiliary wing g13a overlaps the main wing 12a when viewed from above the rotor blade 6.

The lower end of the aileron 13a has a smooth curved surface to form the main wing 1.
2 It is connected to a. The aileron 13a has a hollow cylindrical body 13
It is continuous from the lower part to the upper part, and the width dimension W and the height dimension become smaller as they go upwards of the hollow cylindrical body. The outer diameter of the hollow cylindrical body 13 itself also decreases as it goes upward.

A mounting boss 13b and a communication hole 13C are formed in the lower part of the hollow cylindrical body 13. A large number of water intake holes 13d are formed on the outer periphery of the hollow cylindrical body 13. The water that entered from the water intake hole 13d is
Due to the pump action on the back side of the blade body 12, the communication hole 13C
Then, it passes through the back surface of the wing body 12 and returns to the washing tub 3.

As shown in FIG. 5, a cap body 14a is integrally formed at the upper end of the guide cylinder 14 to cover the upper end of the hollow cylinder body 13. The cap body 14a has a ring-shaped groove 14b, and the cross-sectional shape of the ring-shaped groove 14b is an inverted U-shape. A plurality of fitting lips 14'C are provided at the lower part of the cap body 14a.
is integrally provided on the outer periphery of the guide cylinder 14. Guide cylinder 14
is held at the center within the hollow cylindrical body 13 by the fitting lip 14c.

A nozzle 14d is formed at the lower end of the guide cylinder 14, as shown in FIG. A net-like water hole may be formed in the center of the guide cylinder 14. A lift filter 15 is installed around the outer periphery of the nozzle 14d. The lift filter 15 includes a ring body 15b that is integrally provided on the outer periphery of the disk mesh portion 15a and that fits into the inner wall of the hollow cylinder 13, and a ring body 15b that is fitted to the inner wall of the hollow cylinder 13. integrated in the center of
and a fitting body 15C that is detachably fitted to the nozzle 14d.

The lint that flows into the intake hole 13d of the hollow cylindrical body 13 and into the gap 13e between the hollow cylindrical body 13 and the guide cylinder 14 is deposited on the lint filter 15.

The outer diameter of the hollow cylindrical body 13 is set to 40W to 70W.The ratio D/a of the diameter of the blade body 12 at Q0 rotation'r146 and the vertical dimension a of the washing tub 3 is 0.6 to 0. The range is 8.

The rotation control mechanism 7 is fixed to the external bottom surface of the washing tub 3 using a mounting plate 16. The rotation control mechanism 7 includes a gear reduction mechanism 17
, the output shaft 18 of this gear reduction mechanism 17, the input shaft 19 of the gear reduction mechanism 170, the driven pulley 20 fixed to this input shaft 19, the drive pulley 21 fixed to the rotating shaft of the washing motor 8, and this Drive pulley 21 and driven pulley 20
The attachment consists of a permanent belt 22. A mounting boss 13b for the rotary blade 6 is attached to the upper end of the output shaft 18.

The rotation of the washing motor 8 is controlled by the rotation control mechanism 7.
The speed is reduced to a range of 12 to 1/20 and transmitted to the rotor blade 6. The rotational speed of the rotary blade 6 is set in a range of 60 rm to 120 rP. The washing motor 8 uses a single-phase induction motor with a four-pole capacitor star run. The washing motor 8 is fixed onto the pace 2 via a vibration isolating rubber 23.

The rotation angle of the rotor blade 6 is 1.5 in both forward and reverse directions.
Set in the range of rotation (540 degrees) to 3.5 rotations (1260 degrees).

A hollow ring-shaped fluid balancer 5a filled with saline is provided at the upper end of the dehydration tank 5. The rotation shaft 5b of the dehydration tank 50 is
The coupling 24 is directly connected to the rotating shaft of the dewatering motor 9. At the bottom of the water receiving tank 4, a bellows 25 is provided which serves both as a vibration-proof bearing for the rotating shaft 5b and as a water seal. Dewatering motor 9
is anti-vibration supported on the spacer 2 by anti-vibration springs 26 and anti-vibration rubber tubes 27. The dehydration tank 5 is made of synthetic resin and has a diameter of 50
i4oorpm at H2,' and 170 at 60H2
Rotate with 0f voice.

A dehydration cover 10 having a dehydration inlet 10a is provided at the upper end opening of the water receiving tank 4. At the top opening of the washing tub 3,
As shown in FIGS. 1 and 2, a transparent laundry inner lid 28 and a laundry lid 29 that covers the laundry inner lid 28 are provided. On the dehydration cover 10, as shown in FIG. Dehydration inner lid 3
0, and a dehydration lid 31 that covers this dehydration inner lid 30 is provided.

Laundry inner lid 28, washing lid 29, dehydration inner lid 3o, and dehydration lid 3
1 are all made of synthetic resin.

The dehydration inner lid 30 is provided with a slit-shaped portion 30a so that the dehydration tank 5 can be seen when the dehydration lid 31 is opened. The washing inner lid 28 is provided with a recess 28a, an injection guide port 28b provided in the center of the recess 28a, and a Java-shaped water sprinkling hole 28C provided in the recess 28a. The injection guide port 28b is located directly above the hollow cylindrical body 13 of the rotor blade 6 when the drainage inner shell 28 is closed. The bottom surface of the recess 28a is gently inclined toward the injection guide port 28b. The washing inner M28 and the dehydrating inner lid 30 can be opened/closed and detached. Laundry lid 2
9 and the dehydration lid 31 are removable.

The operation panel box 11 houses electrical components constituting an electric circuit that controls the washing motor 8 and the like. At the center of the upper surface of the operation panel box 11, there is formed a water supply port 11a to which a water supply hose connected to a water faucet or the like can be attached. A water passage 11C is provided in the operation panel box IJ so that water entering from the water supply port 11a flows out from an outlet 11b provided at the lower front of the operation panel box 11.

The shapes of the outlet 11b and the recess 28a are determined so that the water flowing from the outlet 11b falls onto the recess 28a. The water flowing from the outlet 11b is made to spread over the entire surface of the recess 28a.

The upper surface of the inner washing tub 28 is located below the upper surface of the washing tub 3 so that the water overflowing from the recess 28a does not overflow outside the outer frame 1.

The washing motor 8 is rotated forward and backward in extremely short cycles by the timer 32.

The rotational direction and energization time of the washing motor 8 can be set by the timer 32 as shown in FIG. In other words, when closed, the washing motor 8 is energized for 0.8 to 3.5 seconds in the forward direction, de-energized for 0.2 to 0.5 seconds, and then energized for 0.8 seconds in the reverse direction. Electrify for 3.5 seconds to 3.5 seconds. This energization mode is repeated multiple times until the main switch M is turned off.

Here, the driving time for forward or reverse rotation is the rotation speed per minute, since the rotor must rotate 1.5 rotations (540') to 3.5 rotations (1260 degrees) to obtain the mechanical action necessary for cleaning. (lpm) is selected between 0.8 and 3.5 seconds.

For example, assume that a 4-pole, single-phase induction motor is used as a washing motor and is rotated at 1400 revolutions per minute with a 50H2 power supply.

At this time, the rotor blades are driven with a reduction ratio of 1/16, and the rotation angle at one start-up required for cleaning is set to 2 due to the shape of the rotor blades.
, 5 rotations (900°), the starting time for forward or reverse rotation is 1.7 seconds.

The problem here is the downtime between forward rotation and reverse rotation. Conventionally, the time was generally set at 0.5 to 0.6 seconds. The reason for this is that with conventional machines, the rotation speed of the rotor blades per minute was as high as 15 O11 m or more, which resulted in a large mechanical effect on the fabric and severe wear on the fabric. It was necessary to shorten the total rotation time of the rotor blades.

However, during the rest time of 0.5 to 0.6 seconds, the cloth is at rest, so compared to conventional whirlpool washing machines that rotate the rotary blades continuously, the cloth appears to be resting constantly, and the cloth does not stagnate. This gives the impression that it cannot be washed easily.

Therefore, in our company, when the position of the motor 8 drive capacitor is changed by a switch, it does not stop due to the inertia of the rotor, and the rotation direction does not change, and it continues to rotate in the conventional direction, which is the limit of 0.2 seconds. It's shortened to a certain point.

I found that when I made it this short, the pause time seemed to end instantly, so there was almost no sense of stagnation in the cloth movement.

On the other hand, by making the pause time t0,1 extremely short, about 0.2 seconds, the feeling of stopping the cloth movement is eliminated, so the rotational speed of the rotor per minute during forward or reverse rotation can be reduced from the conventional 150 to 60. It was clever to be able to widen it to 120ra.

Therefore, as a result, the size of the cloth portion 4 is reduced by a large amount of lK111, and the reduction in the cleaning effect on the cloth due to the low-speed rotation of the rotor blade can be suppressed by lengthening the actual driving time due to the shortening of the downtime.

On the other hand, a timer has an error whether its driving source is a small timer motor or a spring, so taking this error into consideration, the pause time is set to 0.2 to 0.5 seconds, that is, 0.35±0.
It is set to 15 seconds.

Furthermore, in another embodiment of the present invention, as shown by the dotted line in FIG. 10, when the reversing switch of the timer is in the rest state, half-wave rectified direct current is applied to the rotor by applying a sudden brake to the rotor. This prevents malfunctions due to rotational switching of the fully distributed rotors. In this way, even if the pause time jof4 is set to 0.2 seconds, the operation can be made more reliable.

The washing inner lid 28 has a rotating shaft 28d integrally formed at both ends of the washing inner lid 28, which is connected to the upper end flange 3 of the washing tank 3.
A or U-shaped notch port 3 provided in the dewatering cover 10
4 and 34a, it is attached to the upper end opening of the washing tub 3 in a detachable and openable/closable manner.

In the above configuration, in order to carry out a washing operation, the washing N lid 29 is removed, the washing inner lid 28 is opened, the laundry is put into the washing tub 3, and the detergent is poured into the hollow cylinder 13. Insert.

Next, after closing the laundry inner lid 28, the water supplied to the water supply port 11a is caused to flow out from the outlet 11b onto the recess 28a of the laundry inner lid 28, and into the hollow cylindrical body 13 through the injection guide port 28b. inject.

The water injected into the hollow cylindrical body 13 passes through the communication hole 13C together with the detergent introduced into the hollow cylindrical body 13, and flows from the back surface of the blade body 12 of the rotor blade 6 to the inner bottom of the cleaning tank 3. leaks to.

Once the water has accumulated in washing tub 3 to the specified water level, timer 3
The washing operation is performed by rotating the rotary blade 6 in forward and reverse directions for a period of time determined by 2.

When the time set by the timer 32 has elapsed, the forward and reverse rotation of the rotary blade 6 is stopped, and the water in the washing tub 3 is drained. After draining the water in the washing tub 3, water is again collected from the water supply port 11a in the washing tub 3 through the hollow cylindrical body 13 to the specified water level, and the rotating tool 6 is rotated forward and reverse to perform the rinsing operation. will be held. The rinsing work time is set by a timer 32.

After the rinsing work is completed, the laundry inner lid 28 is opened and the laundry taken out from the washing tub 3 is put into the dehydration tub 5. after that,
Dehydration work is performed by rotating the dehydration tank 5 in one direction at high speed. The dehydration work time is set by the dehydration timer.

During the rinsing operation, if water is supplied to the water supply port 11a, the water falls into the washing tub 3 through the water sprinkling hole 28C of the inner lid 28 of the washing tub 3, and efficiently removes the bubbles floating on the water surface of the washing tub 3. Can be erased. When water is supplied to the water supply port 11a when the inside of the washing tub 3 is emptied, the inner surface of the washing tub 3 can be efficiently washed by the water falling in a shrinking manner from the water sprinkling hole 28C.

If you want to add detergent during the washing process, put the detergent into the hollow cylinder 13 from the injection guide port 28b of the inner washing lid 28 and supply water to the water supply port 11a. The detergent can then flow into the inner bottom surface of the washing tub 3 through the hollow cylindrical body 13. Therefore, even if detergent is added during the washing process, the detergent can be dissolved in water very smoothly without adhering to the top surface of the laundry.

During washing and rinsing operations, the washing inner lid 28 is closed, so even if the water in the washing m3 is scattered due to the forward and reverse rotation of the rotation R6, the water will not flow out of the washing tub 3. The water and detergent supplied into the hollow cylindrical body 13 are forcibly sprayed onto the inner bottom of the washing tub 3 by the pumping operation of the rotary blade 6, so that the detergent dissolves into the water in the washing tub 3 very smoothly. .

Furthermore, when washing and rinsing, wash 71, Q
3 flows into the lint filter 15 provided in the hollow cylinder 13 from the water intake hole 13d of the hollow cylinder 13, the lint is removed by the lint filter 15, and only water flows between the communication hole 13C and the blade body. 12 and returns to the inside of the washing tub 3.

In this embodiment, a two-layer washing machine is used, but the present invention is not limited to this, and can also be applied to a special layer machine or a fully automatic washing machine that does not have a dehydrating function.

As described above, the present invention has the feature of providing a washing machine in which cloth moves smoothly and does not feel stagnant.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional view;
FIG. 2 is a partially cutaway perspective view, FIG. 3 is an explanatory diagram of the shape of the washing tub, FIG. 5 is an enlarged sectional view of the rotor, and FIG. 6 is a sectional view taken along line I-1 in FIG. 5. Figure 7 is a sectional view taken along ■-■ of Figure 6.
Figure 8 is a cross-sectional view of l] and [-m in Figure 5, Figure 9 is a cross-sectional view of It is a relationship diagram of switches. 3... Washing tub, 6... Rotating blade, 13... Hollow cylinder, 13C... Communication hole, 13d... Water intake hole, 28...
・Laundry inside bet, 28b...Injection guide port. 1st Entrance 11 7th Puncture 30 5th Entrance tq-b ”“ 4C ■ ■ /q 13已13ku 13ku V V Half Mu n 'Graduation 70 3I121] Dormitory 90 10th 110 Director General of the Japan Patent Office Wakasugi Display of Oro-dono's case 1989 Patent No. 189271 Name of the invention Person who amends the washing machine Relationship with f+ Patent applicant's name Name f51tll 4th ceremony (" Manufactured by Hitachi, Inc., Publisher: L Residence N1r (〒100) Marunouchi-5, Chiyoda-ku, Tokyo
Number 2: Details of the drawing amendment attached to the attached sheet. 1. Amend the brief description of the drawings column as follows. "Brief Description of the Drawings The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view;
Figure 2 is a partially cut away perspective view, Figure 3 is an explanatory diagram of the shape of the washing tub, Figure 4 is an enlarged sectional view of the rotor, and Figure 5 is the
1-1 sectional view in the figure, FIG. 6 is a sectional view taken along ■-■ in FIG. 5, FIG. 7 is a sectional view taken along ■-■ in FIG.
I have attached a sectional view of the TV, Figure 9 is the electric circuit diagram, and Figure 10 is the energizing time of the laundry motor and suit #=convexity=±. (1) Changed Figure 5 to Figure 4. (2) Changed Figure 6 to Figure 5. (3) Changed Figure 7 to Figure 6. (4) Changed Figure 8 to Figure 7. (5) Changed Figure 9 to Figure 8. (6) Changed Figure 10 to Figure 9. (7) Changed Figure 11 to Figure 10. North Dormitory J + Exit Fu No. Yuguchi No.

Claims (1)

[Claims] 1. A washing tub with a circular or rectangular planar shape, and an inner diameter of 60 to 8 on the -side of the washing tub provided at the center of the inner bottom of the washing tub.
The rotating blade has a large outer diameter of 0, and has a hollow cylindrical or chevron-shaped protrusion, and the forward and reverse rotation of the washing motor is transmitted to this rotary blade through a reduction mechanism. In a washing machine that is driven by repeating one cycle of forward rotation and reverse rotation in a short cycle of 10 seconds or less, the rest time of the rotor blade when starting one forward rotation or reverse rotation causes a feeling of stagnation in cloth movement. A washing machine characterized by having a washing time of 0.2 to 0.5 seconds without any lag. 2. In the above, the rotor is abruptly stopped by applying a half-reduction rectified DC brake using a diode to the motor at the same time that the timer operation is stopped.