JPS62397A - Dehydration operational system of washing machine - 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] [Fields of use of Matoujo] The present invention relates to a dehydrating operation method for a groom washing machine.

[Conventional technology]

Dewatering of the rock is carried out by rotating the dehydration tank in a circle of nine circles, but if the washing material in the circular part becomes uneven, the rotation becomes eccentric and irregular, which causes a lot of vibration and noise. . Sometimes, a fully automatic type is used; compared to a two-tank type, the dewatering #i is larger, so this vibration and vibration are large. The tank is made to rotate horizontally.

[The problem that the invention attempts to solve]

As mentioned above, conventional washing machines are equipped with a balancer to perform horizontal rotation, but even this is insufficient, and there has been a strong desire to reduce vibration and noise.

An object of the present invention is to eliminate the disadvantages of the conventional example.

To provide a dehydrating operation method for a washing machine capable of lowering movement and noise.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention is provided with means for detecting the rotation speed, and the output from this detection means temporarily activates the drive motor when the dehydration tank reaches a certain low rotation speed in the initial stage of the dewatering process. The gist of this is to repeat the operation of stopping the mantissa number of times.

[Effect]

According to the present invention, in the initial stage of the dehydration process, the dehydration tank is intermittently driven to rotate at a low speed with the rotation speed being lower than the maximum rotational speed of the common excavation.As a result, the dehydration tank rotates. does not exceed the resonance point and does not cause large vibration rL.

Also, during this time, remove as much water as you can from the laundry in the tub.
9. Since the weight is lighter, even if the process progresses and full-scale dehydration is performed using vortex speed rotation, eccentric load is less likely to be applied and vibration is less likely to occur.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to one drawing.

FIG. 1 is an explanatory diagram showing the operation method of the present invention.

Figure 2 shows a longitudinal side view of the washing machine.

An example of a washing machine is a fully automatic agitation type washing machine. (1) in Figure 1 shows a vertical agitation machine Jt (31 radially) centered around a hollow cylindrical body with a large number of through holes (2). The agitator (4) is the agitator (11) placed in the middle IL?, the next dehydration tank has a through hole (5) in the side wall, and the opening at its upper end is a balancer using a hollow transporter. Length - (6
) is formed. (71k) A water receiving tank provided outside the dewatering tank (4).Although not shown, this tank is provided with a drain port to which a drain pipe is connected.

In the figure, (8: is the motor, this is the pulley (9),
'V-belt α0. and is connected to the rotation transmission section υ via a deceleration transmission mechanism of the pulley αD. It has a double drive shaft (12a1 (12b)) which is switched by this rotation difference part hhs spring clutch mechanism set 3, and an outer drive shaft (12b).
2a) is the inner drive shaft (12b) t'' in the dehydration tank (4).
! A rotation speed detection means I for detecting the rotation speed of the motor (81) connected to each of the agitators (1) is attached to the motor (81). However, as an alternative, a rotary plate with a detection hole may be attached to the shaft of the motor (8), and a U-shaped angle detector having two light emitting sections may be attached to this. Conceivable.

9 Although illustrations are omitted, all of these mechanisms are housed inside the exterior through vibration isolating means, and the upper part of this exterior is provided with a control device using a microcomputer and an operation section containing operation switches. .

And this system +! 1ljj & grudge $ha as shown in Figure 3.

Central processing unit (OPU) (15a), ROM
(15b).

RAM (15C), input/output control circuit (15(L)
It is equipped with an output from the rotation speed detection means (speed generator) α fathom as well as water level detection and other ground detectors (not shown).
8) is introduced into the drive circuit αe, valve control circuits such as water supply valves and drain valves, and other parts (not shown).

Next, the operation of the washing machine configured as described above will be explained.

FIG. 4 is a diagram showing a standard washing process of such a washing machine, and the process progresses sequentially from the left side to the right side of FIG. 1. first,
In the washing process, the laundry is stored in the dehydration tank (4), water and detergent are added, and the power switch is turned on.
1 alternately rotates in forward and reverse directions, and the agitator (11) also oscillates accordingly. When an operation that takes a certain period of time is performed by the action of a timer within the control device aS, water is drained and the washing process is completed.

Next, the rinsing process begins, and water injection and dehydration and normal rinsing are alternately repeated several times. (The figure shows two repetitions.) Of these, water pouring and dehydration involves discharging detergent-containing water from the laundry while sprinkling fresh water from above.

When the water injection and dehydration process begins, the spring clutch mechanism αj switches, the shaft (12a) begins to rotate together with the shaft (12b), and the motor (81) continuously rotates in only one direction.The motor (8) is energized. The dehydration tank (41) and the agitator (1) rotate, but at the initial stage of this water injection and dehydration process, TIΣ water injection is not yet performed. The output from the motor (8) is introduced into the control device a$, where the rotation speed of the motor (8) is increased so that the dehydration tank (4) reaches 300 rotations, which is 1/3 of the normal high rotation speed of SOO rotation/minute. When the.

The motor (8) is stopped for a short time by the output from the control device 111 [t15.

Furthermore, the motor (81) is started again, and the dehydration tank (4
) rotation is set to 300 rotations rotation button upper limit.

Turn the motor (8) on and off about 5 times.

This aoo [g1 rotation/min is the upper limit value set because it is below the syncral point at which the dehydration tank (4) swings the most,
This intermittent operation of the dehydration tank by low-speed rotation is called balance rotation.

During balanced rotation, since it is below the resonance point, the laundry to be washed tends to shift to one side, and even if it does occur, it has the effect of correcting this, making it difficult to cause eccentric rotation that can cause loud noises and vibrations. . Approximately 30 inches of water contained in the laundry is removed during this balance rotation, reducing the load.

Next, high-speed rotation starts, water injection starts again, the motor (8) is operated continuously, and the rotation speed of the dehydration tank (4) reaches 900.
Rise until the rotation button is reached. Even during such high-speed rotation, noise and vibration due to eccentricity are unlikely to occur because the water content of the laundry item is reduced during the balance rotation.

This balance rotation is similarly carried out at the initial stage when the rinsing process is completed and the last process is (1) dehydration process.

This balance U-rolling operation will be explained in more detail based on the flowchart of FIG.

As shown in FIG. 5, when the motor (81) starts to be energized, the CPU (15a) inputs the signal from the speed generator I via the input/output control circuit (15d), and changes the rotation speed of the hydrophilic phase. It is determined whether or not the signal has become a signal indicating that the rotation has increased by 300 rotations (step S11).While the signal is small after increasing by 300 rotations, the judgment is repeated, and when the rotation has increased by 300 rotations, the next step (812) is performed. )
to move to.

The step (812) stops the power supply to the motor (81) for a predetermined short time.
The rotation of the motor (8) temporarily decreases to 5 as shown in Figure 1.

In the next step (B13), it is determined whether the time to cut off the motor (81) has reached a predetermined time.

When the predetermined fc waiting time has elapsed, the process moves to the next step (814 months).

In step (S14), it is confirmed how many times the energization to the motor (81 can be cut off), and the energization to the motor (8) and the M. Repeat @. Then, predetermined fc1
gl number After returning that action, move on to the next O step (815).

In step (815), the motor +81 is rotated at high speed to rotate the dehydration tank for 7 SOO rotations as shown in FIG.

In step (816), the time period during which the high-speed rotation is being performed is checked, and when the predetermined time period is reached, the high-speed operation is ended, the dehydration process is completed, and the next process is started. .

Dehydration operation including balance rotation is executed by the above-described procedure.

Although the above embodiments have been described based on a fully automatic stirring type, the inventive method can be applied to all types of washing machines having a dehydrating tank, such as a two-tub type or a pulsator type.

〔Effect of the invention〕

As mentioned above, the dehydration operation method of the washing machine of the present invention &;
Without adding any special equipment or parts for this purpose, it is possible to ensure round vibration and discharge noise during dehydration with simple means, and also prevent the inconvenience of the dehydration tank stopping midway.

[Brief explanation of drawings]

The first reason is an operation explanatory diagram showing the dehydration operation method of the washing machine of the present invention, and Fig. 2 is a vertical sectional side view of the main part of a fully automatic stirring type washing machine that performs the method of the present invention! 3 is a diagram showing an outline of the control device, FIG. 4 is an explanatory diagram showing a normal washing process, and FIG. 5 is a flowchart showing the control operation of the present invention. (11... Agitator, (21... Through hole, (31 Stirring blade) (41... Dehydration tank, (51... Through hole, (6)... Balancer, (7)... Water receiving tank, ( 81...Motor,
(91, (lil...Pulley, (lα...V belt, α3...Rotation transfer section, (12a bar 12b)
...Drive shaft. αJ...Spring clutch mechanism, (I4...Rotation detection means, 4...Control device, C1υ...Motor drive circuit agent Patent attorney Masuo Oiwa Figure 1, Figure 3, Figure 1, Ri Figure 4 5wi

Claims (1)

[Claims] A means for detecting the rotational speed is provided, and the output from this detection means is used to repeatedly stop the drive motor temporarily when the dehydration tank reaches a certain low rotational speed in the initial stage of the dehydration process. A washing machine dehydration operation method featuring