JP3538898B2 - Fully automatic washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic washing machine capable of sequentially controlling a series of steps of washing, rinsing, and dewatering, performing intermediate dewatering in the rinsing step, and setting a water-injection rinse.

[0002]

Conventionally, this type of washing machine, the water flow at the time of water injection rinse is repeated right, right, left, left, right, the reversal time period to one cycle of the rotation of the left, water injection rinsed with rinsing operation
Intermediate dehydration performed prior to this has changed the time only by the amount of cloth. For example, in the case of a fully-automatic washing machine having a capacity of 6 kg, the time of the intermediate dehydration is set to be the longest in the case of 6 kg, and the time of the intermediate dehydration is shortened as the capacity decreases.

[0003]

In such a conventional fully automatic washing machine, the reversal time during water rinsing is a time period suitable only for a certain amount of clothes (cloth amount) or quality of clothes. In addition, the time of the intermediate dehydration is changed only according to the amount of the cloth, and the time of the intermediate dehydration is set to be shorter as the capacity becomes smaller. When the flow rate is low and the water temperature is low, there is a problem that the rinsing performance is not good.

On the other hand, when the water pressure of tap water is high and the flow rate is high, or when the water temperature is high, there is a problem that it takes more time than necessary.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is a first object of the present invention to obtain a predetermined rinsing performance even when the flow rate of domestic tap water is small when water rinsing is set .
The purpose is.

Moreover, water injection rinsed set at less flow of household tap water, even if more water temperature is low, and a second object thereof is to a predetermined rinsing performance.

A third object of the present invention is to shorten the overall stroke time while obtaining a predetermined rinsing performance when the flow rate of domestic tap water is large at the time of setting the water injection rinsing.

Further, when the flow rate of domestic tap water is high and the water temperature is high at the time of setting the injection rinsing, it is necessary to shorten the entire stroke while obtaining a predetermined rinsing performance.
The purpose is.

[0009]

In order to achieve the first object, the present invention provides a pulsator rotatably disposed in a washing and dewatering tub, a motor for inverting the pulsator and generating a water flow, Rotation angle detection means for detecting the rotation angle of the motor; cloth amount determination means for determining the amount of cloth in the washing and dewatering tub based on the output of the rotation angle detection means; washing, rinsing, and dehydration by driving the motor Control of a series of steps
In addition, make sure that the intermediate dehydration is performed during the rinsing process.
Control means for setting a water rinse, and a flow rate detecting means for detecting a flow rate of water supplied to the washing and dewatering tub ,
Before SL control means it is determined by the distribution amount determining means
The water supply water level is determined based on the cloth amount, and when the water rinsing is set in the rinsing stroke, if the flow rate detected by the flow rate detecting means is small , prior to the water rinsing,
The first problem-solving means is to extend the time of the intermediate dehydration performed in the first half.

In order to achieve the second object, in addition to the first means for solving the above-mentioned problems, there is provided a water temperature detecting means for detecting a temperature of water supplied to the washing and dewatering tub, and the control means comprises: A second problem solving means is to extend the time of the intermediate dehydration when the water temperature is low and the water temperature is low.

In order to achieve a third object, a pulsator rotatably disposed in a washing and dewatering tub, a motor for inverting the pulsator to generate a water flow, and detecting a rotation angle of the motor. Rotation angle detection means, a cloth amount determination means for determining the cloth amount in the washing and dewatering tub based on the output of the rotation angle detection means, and washing and rinsing by driving the motor;
A series of dehydration processes are controlled sequentially , and intermediate dehydration is performed during the rinsing process.
And a control means for enabling setting the rinsing water injection, and flow rate detecting means for detecting the flow rate of feed water to the washing and dewatering in the water tank while to perform, before Symbol control means, determined by the distribution amount determining means Determine the water supply water level based on the amount of cloth that has been set, when setting the water injection rinse in the rinsing process ,
If the flow rate detected by the flow rate detection means is large,
A third problem-solving means is to shorten the time of the intermediate dehydration performed in advance of the water injection rinsing .

Further, in order to achieve the fourth object, in addition to the above-mentioned third means for solving the above-mentioned problems, there is provided a water temperature detecting means for detecting a temperature of water supplied to the washing and dewatering tub, and the control means comprises: A fourth problem-solving means is to reduce the time for intermediate dehydration when the water temperature is high in many cases.

[0013]

According to the first aspect of the present invention, there is provided:
At the time of water injection rinse set, in order to be bad rinse rate when the flow rate of tap water is small, to this well, water injection
By extending the time of the intermediate dehydration performed prior to the rinsing, a predetermined rinsing performance can be obtained.

Further, the second means for solving problems, during water injection rinse setting, less the flow rate of tap water, rinsing ratio becomes worse if the water temperature is low, in order to improve this, prior to water injection rinsing By extending the time of the intermediate dehydration performed , a predetermined rinsing performance can be obtained.

Further, the third problem solving means, at the time of injection rinsing set, rinsing ratio becomes better when the flow rate of tap water is high, in order to eliminate waste while ensuring a predetermined rinsing performance, water injection By reducing the time of the intermediate dewatering performed prior to the rinsing, the entire stroke time can be reduced.

Furthermore, the fourth problem solving means, at the set time of injection rinsing, the flow rate of tap water is large and rinsing rate when the water temperature is high better, eliminate waste while ensuring a predetermined rinsing performance Prior to rinsing with water
By reducing the time of the intermediate dehydration performed by the above, the entire process time can be reduced.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

As shown in the figure, the washing and dewatering tub 1 has a pulsator 2 rotatably disposed at the center bottom. The water tub 3 contains the washing and dewatering tub 1 and a substrate 4 is fixed to the outer bottom, and a motor 5, a drain valve 6, a washing and dewatering switching mechanism 7, and the like are provided. The outer edge of the substrate 4 is suspended from the upper corner of the outer frame 10 via a vibration isolator 8 and a suspension rod 9. Outer frame 1
An upper cover 11 is provided at the upper part of 0, and a water supply valve 12, a power switch 13, a control device 14, and the like are provided. The encoder (rotation angle detection means) 15 detects the rotation angle of the motor 5, outputs six pulses for each rotation of the motor 5, and inputs the output to the control device 14.

The control unit 14 includes a pulse counter 16 for counting the number of output pulses of the encoder 15, a cloth amount determining means 17 for determining the cloth amount based on the output of the pulse counter 16, and a control means 18 comprising a microcomputer.
A power switching means 19 for controlling the motor 5, the drain valve 6, the water supply valve 12 and the like in accordance with a signal from the control means 18, and an operation display means 20 including a key switch and a display device disposed in an operation panel 20. And a storage means 21 for storing data necessary for controlling a series of steps of washing, rinsing and dehydration by the control means 18.

The water level detecting means 22 is for detecting the water level in the washing and dewatering tub 1, and the flow rate detecting means 23 is arranged at the entrance side of the water supply valve 12 for detecting the amount of supplied water. The output is input to the control means 18. The dirt detecting means 24 detects dirt on clothes by dirt of washing water in the washing and dewatering tub 1. In addition, 25 is an AC power supply, 26 is a phase advance capacitor of the motor 5, and 27 is a V belt.

The cloth amount determining means 17 performs a plurality of operations of stopping the motor 5 for a predetermined time T2 after driving the motor 5 for a predetermined time T1 before supplying water to the washing and dewatering tub 1 by the control means 18 for a predetermined time T.
The cloth amount is determined based on the output of the encoder 15 based on the sum of the two.

The control means 18 sequentially controls a series of steps of washing, rinsing, and dehydration so as to perform intermediate dehydration in the rinsing step and to set a water injection rinse. Based on the determination result, as shown in (Table 1), the water supply level to the washing and dewatering tub 1 and the water flow in the washing and rinsing steps are determined.

[0023]

[Table 1]

When the water injection rinse is set and the flow rate detected by the flow rate detecting means 23 is small,
As shown in (Table 2), the time for the intermediate dehydration (usually 2 minutes) is extended, and when the detected flow rate is large, the time for the intermediate dehydration is shortened.

[0025]

[Table 2]

That is, in Table 2, when the feed water flow rate is 15 liters / minute or less, 15 to 25 liters / minute
Minutes, the intermediate dewatering time is extended for 15 seconds, and when the water supply flow rate is 25 liters / minute or more, the intermediate dehydration time is shortened for 15 seconds compared to the case of 15 to 25 liters / minute.

The operation when water rinsing is set in the rinsing process in the above configuration will be described with reference to FIG. 3. First, in step 31 of FIG. Then, when the power switch 13 is pressed and the start switch (not shown) is pressed in step 32, the process proceeds to step 33, in which the motor 5 is driven, for example, rightward for 0.15 seconds (predetermined time T1).
After a pause of 5 seconds (predetermined time T2), driving is performed leftward for 0.15 seconds (predetermined time T1), and then a pause of 0.5 seconds (predetermined time T2). Repeat this operation several times. here,
When the predetermined time T1 is driven, for example, for 0.3 second (the predetermined time T1), the rotation speed of the motor 5 increases. At this time, the rise of the rotation speed of the motor 5 differs depending on the power supply voltage, the amount of laundry, and the like.

Next, the routine proceeds to step 34, in which the power supply to the motor 5 is stopped, for example, 0.5 seconds (predetermined time T2).
The pulse counter 16 counts the number of output pulses of the encoder 15 up to this point, and at step 35, the cloth amount determination unit 17 determines the cloth amount (the amount of laundry). That is, the cloth amount can be determined based on the number of pulses detected by the pulse counter 16.
Proceeding to step 36, the water supply level and the water flow are determined based on the result of the determination by the cloth amount determination means 17, and further, the detergent amount according to the water supply water level is determined, and the detergent amount corresponding to the cloth amount is displayed on the operation display means 20. Display the water level and inform the user.

Next, in step 37, water is supplied to a predetermined water level corresponding to the cloth amount, and in step 38, the flow rate at that time is measured by the flow rate detecting means 23. And step 39
In the washing starts, performs a drainage at step 40 after washing completion, further performs the intermediate dehydration by determining the intermediate dehydrating time with a flow rate at step 41, performs a water injection rinse at step 42.

As shown in FIG. 4, the rinsing rate improves as the intermediate dewatering time increases, and as shown in FIG. 5, the rinsing rate increases as the flow rate increases. If the detected flow rate is small, it is possible to obtain a predetermined rinsing performance by extending the time of intermediate dehydration, and if the detected flow rate is large, reduce the time of intermediate dehydration. Thereby, the entire stroke time can be shortened while securing a predetermined rinsing performance.

Next, a second embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in the figure, the water temperature detecting means 27 detects the temperature of the water supplied to the washing and dewatering tub 1 and inputs its output to the control means 28. The control means 28
As shown in (Table 2), when the flow rate is small and the water temperature is low, the time for the intermediate dehydration is extended, and when the flow rate is large and the water temperature is high, the time for the intermediate dehydration is shortened.

With reference to FIG. 7, the operation of the above configuration when water rinsing is set in the rinsing process will be described.
Steps 31 to 38 are the same as the operations of the first embodiment, and thus the description is omitted.

At step 38, the flow rate is measured by the flow rate detecting means 23, and at step 43, the water temperature is measured by the water temperature detecting means 27. Then, in step 39, washing is started,
After the washing is completed, drainage is performed in step 40, and further, in step 44, intermediate dehydration time is determined based on the flow rate and the water temperature, and intermediate dehydration is performed.

As shown in FIG. 4, the rinsing rate was improved as the intermediate dewatering time was longer, and as shown in FIG. 5, the higher the flow rate and the higher the water temperature, the better. When the flow rate is low and the water temperature is low, a predetermined rinsing performance can be obtained by extending the time of the intermediate dehydration, and when the detected flow rate is large and the water temperature is high, the By shortening the time of dehydration, it is possible to shorten the entire stroke time while securing a predetermined rinsing performance.

[0036]

As described above, the present invention provides a pulsator rotatably disposed in a washing and dewatering tub, a motor for inverting the pulsator to generate a water flow, and a rotation angle for detecting a rotation angle of the motor. Detecting means, cloth amount determining means for determining the amount of cloth in the washing and dewatering tub based on the output of the rotation angle detecting means, and driving the motor to sequentially control a series of steps of washing, rinsing, and dehydrating ; Intermediate dehydration during the process
And control means for enabling setting the rinsing water injection while the, and a flow rate detecting means for detecting the flow rate of feed water to the washing and dewatering in the water tank, before Symbol control means, the laundry amount determining means
Determine the water supply level based on the laundry amount determined by the,
When setting the injection rinsed with the rinsing operation, when the flow rate detected by said flow rate detection means is low, the note
Since the period of the intermediate dehydration performed prior to the water rinsing is extended, the predetermined rinsing performance can be obtained even when the flow rate of domestic tap water is small at the time of the water rinsing setting .

Further, the apparatus is provided with water temperature detecting means for detecting the temperature of water supplied to the washing / dewatering tub, and the control means extends the time of the intermediate dehydration when the flow rate is small and the water temperature is low. At the time of setting , the predetermined rinsing performance can be obtained even when the flow rate of domestic tap water is low and the water temperature is low.

Further, the control means determines the water supply level based on the laundry amount, which is <br/> determined by the cloth amount determining means, rinsing line
When setting rinsed water injection in degree, when the flow rate has been detected by the flow rate detection means is large, it performed prior to water injection rinsing
Since the time for intermediate dehydration is shortened, when the flow rate of domestic tap water is large at the time of water injection setting , the entire stroke time can be reduced while obtaining a predetermined rinsing performance.

Further, there is provided a water temperature detecting means for detecting the temperature of water supplied to the washing and dewatering tub, and the control means shortens the time of the intermediate dewatering when the flow rate is high and the water temperature is high. At the time of setting, when the flow rate of tap water at home is high and the water temperature is high, the entire travel time can be reduced while obtaining a predetermined rinsing performance.

[Brief description of the drawings]

FIG. 1 is a block circuit diagram of a fully automatic washing machine according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of the fully automatic washing machine.

FIG. 3 is an operation flowchart of a main part of the fully automatic washing machine.

FIG. 4 is a characteristic diagram showing a relationship between an intermediate dewatering time and a rinsing rate of the fully automatic washing machine.

FIG. 5 is a characteristic diagram showing a relationship between a flow rate and a water temperature of tap water and a rinsing rate of the fully automatic washing machine.

FIG. 6 is a block circuit diagram of a fully automatic washing machine according to a second embodiment of the present invention.

FIG. 7 is an operation flowchart of a main part of the fully automatic washing machine.

[Explanation of symbols]

1 washing and dewatering tub 2 pulsator 5 Motor 15 Encoder (rotation angle detection means) 17 Cloth weight determination means 18 Control means 23 Flow rate detection means

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D06F 33/02

Claims (4)

(57) [Claims] 1. A pulsator rotatably arranged in a washing and dewatering tub, a motor for inverting the pulsator to generate a water flow, a rotation angle detecting means for detecting a rotation angle of the motor, and the rotation angle detection. Means for determining the amount of cloth in the washing and dewatering tub based on the output of the means; and driving the motor to sequentially control a series of steps of washing, rinsing, and dewatering .
Perform intermediate dehydration during the rinsing process and pour water.
And control means for enabling setting the technique, and a flow rate detecting means for detecting the flow rate of feed water to the washing and dewatering in the water tank, before Symbol control means, based on the laundry amount, which is determined by the distribution amount determining means When the water supply water level is determined and the water injection rinse is set in the rinsing stroke, if the flow rate detected by the flow rate detection means is small, the water supply is performed prior to the water injection rinse.
A fully automatic washing machine that extends the period of intermediate dehydration in the first half of the year. 2. The apparatus according to claim 1, further comprising a water temperature detecting means for detecting a temperature of water supplied to the washing and dewatering tub, wherein the control means extends the time of the intermediate dewatering when the flow rate is small and the water temperature is low. Fully automatic washing machine. 3. A pulsator rotatably disposed in a washing and dewatering tub, a motor for inverting and driving the pulsator to generate a water flow, rotation angle detecting means for detecting a rotation angle of the motor, and the rotation angle detection. Means for determining the amount of cloth in the washing and dewatering tub based on the output of the means; and driving the motor to sequentially control a series of steps of washing, rinsing, and dewatering .
Perform intermediate dehydration during the rinsing process and pour water.
And control means for enabling setting the technique, and a flow rate detecting means for detecting the flow rate of feed water to the washing and dewatering in the water tank, before Symbol control means, based on the laundry amount, which is determined by the distribution amount determining means When the water supply level is determined and the water injection rinse is set in the rinsing process, if the flow rate detected by the flow rate detection means is large, the water supply is performed prior to the water injection rinse.
Fully automatic washing machine so as to shorten the time of the previous fiscal year intermediate dehydration. 4. The apparatus according to claim 3, further comprising a water temperature detecting means for detecting a temperature of water supplied to the washing and dewatering tub, wherein the control means shortens the time of the intermediate dewatering when the flow rate is high and the water temperature is high. Fully automatic washing machine.