JPS63296797A - Rinsing control apparatus 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 Field of the Invention The present invention relates to a rinsing control device for a washing machine that controls water supply and drainage to perform a rinsing process.

BACKGROUND OF THE INVENTION Conventionally, fully automatic washing machines of this type have been equipped with a water rinsing function, and the configuration thereof will be explained with reference to FIG. That is, a washing and dewatering tank 2 is provided in a water receiving tank 1, and a drainage pipe A3 communicating with the bottom of the water receiving tank 1 is opened and closed by a gasket 4. 6 is a drain valve that operates the gasket 4, and 6 is a drain valve B connected to the drain pipe A3, which is fixed to the outer box 7 with screws.

8 is a motor, 9 is a belt, 1o is a speed reducer, a drive unit, and is connected to a pulsator 11.

12 is a drain pipe C for flow, whose upper end is connected to the tank 1 and the lower end is connected to the lower part of the drain pipe A4. 13 is a water inlet, and 18 is a water inlet connected to the water inlet 13. 14 is a pressure filter, 15 is a button for setting the water level in conjunction with the pressure switch 14 which detects the water level in the water receiving tank 1 as pressure.18 is the pressure switch 14 and a button for setting the water level. The water receiver is a hose that connects the tank 1.

To explain the operation here, water is supplied from the water inlet 13 into the washing and dehydrating tank 2, the water is collected in the tank 1 and the washing and dehydrating tank 2, compresses the air in the hose 16, and pressurizes the water. Operate switch 14.

At this time, the operating position does not match the set water level, and the water level can be set using the button 16.

When the pressure switch 14 operates, the motor 8 starts rotating, and the belt 9 transmits this rotation to the deceleration drive unit 10.
The pulsator 11 is rotated to perform washing and rinsing.

When performing overflow rinsing, press pressure switch 1.
Even after 4 is activated, the water supply valve 18 remains ON and the water inlet 13 remains ON.
Washing water continues to be supplied into the washing/dehydration tank 2. The highest water level is at the boundary between the drain pipe C12 and the water receiver tank 1, and if water is supplied any further, the water will flow to the drain pipe CI.
2 and flows out into the drainage pipe A3.

Water rinsing is performed by the above operation, and the effect of water rinsing is to dilute the detergent accumulated on the clothes and discharge it to the outside, thereby increasing the rinsing effect.

Problems to be Solved by the Invention However, with the above configuration, if the set water level is low, the water level will not reach the communicating portion of the drain pipe CI2, and therefore preliminary rinsing will be performed. Therefore, for rinsing, the water receiver is tank 1.
Furthermore, there was a problem in that water simply accumulated in the washing and dehydrating tub 2, and there was no apparent overflow rinsing, resulting in a slightly inferior rinsing performance.

The present invention aims to solve these problems and improve rinsing performance.

Means for Solving the Problems In order to solve the above problems, the present invention provides water level setting means in the washing tub, a water supply valve for supplying water to the washing tub, and a drain valve for draining water from the washing tub. and a control means for controlling the water supply valve and the drain valve, a water level detection means for detecting the water level in the washing tub, and a water supply and drainage capacity detection means for detecting the water supply and drainage capacity, and the control unit includes a During the process, the water supply valve is kept turned on, the water level set by the water level setting means is compared with the water level from the water level detection means, and when the water level rises by a predetermined value than the water level setting means, the drain valve is turned on. When the water level is lowered and reaches the set water level, the drain valve is turned OFF, and a predetermined increase in the water level from the set water level is performed according to the water supply and drainage capacity and the water supply and drainage capacity detected by the force detection means. It is configured to be variable.

Operation With this configuration, even when the water level is set to a low level by the water level setting means, when the water level reaches a predetermined level or higher, the washing i'! Jifi
Since the process of draining the water and stopping the drain when the water level reaches a predetermined level is repeated, water injection rinsing can be performed, and the rinsing performance can be further improved compared to the case of pre-rinsing.

Embodiment An embodiment of the present invention will be explained with reference to FIGS. 1 to 4. In FIG. 1, reference numeral 19 denotes water level setting means for setting washing and rinsing water levels.

2o is a water level detection means, which detects the water level in the tank. 21 is a rinse setting means, which includes water injection rinse,
This is for setting other rinsing conditions. 22 is a water supply flow rate detection means, which is attached to the water supply valve 18;
It detects the water supply flow rate (water supply capacity). Reference numeral 23 denotes a drainage flow rate detection means), which is attached to the lower part of the drainage pipe A3 and detects the drainage flow rate (drainage capacity).

Reference numeral 24 denotes a control means, which operates the drain valve 5 when the water level rises above the water level set by the water level setting means 19 when water injection rinsing is selected by the rinsing setting means 21, and controls the setting water level. If you return to , it controls whether to stop the operation of the drain valve 5, and also controls the motor 8, which stops the operation of the pulsator 11 when the drain valve 5 is operating, and operates the pulsator 11 after the drain valve 6 has finished operating. Let's do it. However, the rising water level is determined based on data from the water supply flow rate detection means 22 and the drainage flow rate detection means 23.

The specific configuration of this embodiment will be explained with reference to FIG.

In Figure 2, 15 is a button for setting the water level;
6 is a button for rinsing switching. 26 is operation button 1
This is an input section into which the output signal from 5.25 is input. 27
28 is where the input data and data on the drainage flow rate and water supply flow rate are input into the washing machine 30 and calculated to set the rising water level, and 28 detects the rising water level set by the calculation and the set water level. This is a water level detection section, and a signal is sent by the water level detection means 2°. 29 is an output unit for operating the washing machine 31, which includes a motor 8, a water supply valve 18, and a drain valve 5.
to operate. 31 is a microcomputer.

The control of the microcomputer 31 will be explained with reference to the flowchart shown in FIG.

A signal inputted manually by pressing the operation button is calculated by taking in water supply flow rate and drainage flow rate data in the calculation/rise water level setting section 27, and the water level detection section 28 detects and calculates the rising water level and the set water level. That is, in step 32, when a key is input, the user selects whether or not to perform water rinsing in step 3.
Determine in step 3. If water injection rinsing is not performed in step 33, it is determined in step 34 that a pre-rinsing is being performed. When it is determined in step 33 that water injection rinsing is to be performed, it is determined in steps 35 to 38 what the set water level is. In step 36, check whether the water level is high or not.
In step 37, it is determined whether the water level is medium, in step 37 it is determined whether the water level is low, and in step 38 it is determined whether the water level is a small amount. If the set water level is determined to be a high water level in step 35, then in step 39 the rising water level a is determined based on the relationship between the drainage flow rate and the water supply flow rate.
It is determined that m. In step 40, it is determined whether the water level in the water supply has reached the rising water level am. If the water level is not low, the drain valve is kept OFF in step 41, the pulsator continues to operate, and the process returns to step 4o. Repeat Stella 7" 40 and step 41 until the rising water level reaches arm. If the rising water level reaches amm in step 4°,
Proceed to step 42 and turn the drain valve to 0FFL to drain the rinse liquid. At the same time, the operation of the pulsator is also turned off. In step 43, it is determined whether the water level has fallen to the set water level, and if it has not returned to the set water level, the process returns to step 42.

Steps 42 and 43 are repeated until the set water level is reached. If it is determined in step 43 that the water level has returned to the set level, the process returns to step 39, and again it is determined that the water level has risen 9 times, and the above steps are repeated.

Repeat this action during the rinse time. When the set water level is determined in steps 36, 37, and 38, the same steps as steps 39 to 43 are performed after step 35, steps 44 to 48 are performed in step 36, steps 49 to 53 are determined in step 37, and steps are performed in step 3. Steps 54 to 68 are performed.

Also, to explain the rinsing performance, let L be the amount of water supplied during rinsing. Let W be the amount of detergent.

The amount of water up to the set water level is P, and the amount of water up to the rising water level is Q.
shall be. Then, the detergent concentration is W/L x 100 (chi) when water is poured and rinsed but not drained, and W/P-4-Q x 100 (sub) l -I when water is drained once.
X). Since Q amount of water is drained from this, the amount of detergent remaining in this amount is WXP/P+Q, so if the remaining water supply amount L-P-Q is added to this, the detergent concentration is WXP/P+Q/P+ (L -P-Q)Xl 0
0tI6) becomes W/(P0Q)XP/P+(L-P-Q)X100%)
-1YI, and when comparing the above equation (3) and the above equation (7), P/P+ (L - P - Q ) < 1, and the above equation (g) has a higher concentration than the above equation (3). As the water becomes thinner, the rinsing performance improves, and the more times the water is drained, the better the rinsing performance becomes.

In the above embodiment, the water supply flow rate and the drainage flow rate are detected by the pulsator 1 when the rinsing time is N minutes.
This is to connect to the next draining process at the end of N minutes during the process of activating 1 and draining the rinse water as well.If you connect to the draining process in the middle of draining, the water level will rise from the rising water level during the rinsing process to the set water level. The time it takes for water to decrease is wasted,
Furthermore, if the rising water level is set high when the water pressure is low, rinsing will be the same as in the past, and the water will not be replaced, resulting in a decrease in rinsing performance. Therefore, it is possible to make the rising water level variable according to the amount of water supplied so that the stirring and draining operations of the pulsator are repeated. Also, if the drainage flow rate is low or the rising water level is set high,
Even if you set it to a low setting, the time the pulsator 11 is stopped is the same, but if you set it to a low setting and perform stirring and draining many times, you can better remove the detergent released during stirring. Can be done.

For these reasons, it is necessary to detect the drainage flow rate and the water supply flow rate to perform rinsing efficiently.

In the above embodiment, the drain valve 5 and the deceleration drive unit 10 operate in conjunction with each other, so when the pulsator 11 rotates clockwise, the pulsator 11 does not rotate, but the washing/dehydration tank 2 rotates, causing a large load on the motor 8. Therefore, when the rising water level is reached, the pulsator 11 is turned off and only the drain valve is operated. However, in other embodiments, the drain valve is only activated when the pulsator 11 rotates clockwise. It is also possible to return the rising water level to the set water level by repeating the operation of turning on the drain valve 5 at 0FFL and other counterclockwise rotations and at rest. In addition, although the set water level was set to four levels in this example,
It is also possible to have multiple stages. In addition, in this example,
The rising water level is detected and controlled by water level detection, but since the water supply flow rate is also detected, it is also possible to control based on the time it takes to reach the rising water level.

Effects of the Invention As is clear from the above embodiments, according to the present invention, even at low water levels other than the highest water level, water can be rinsed by the operation of the drain valve, which is both visually and practically effective. Also, the rinsing performance can be improved and the amount of detergent accumulated on the clothes can be further reduced, thereby improving the rinsing performance.

In addition, since water injection rinsing is performed by the operation of the drain valve,
There is no need for a drain pipe for overflow, and assembly man-hours and costs can be reduced.

[Brief explanation of drawings]

FIG. 1 is a block diagram of main parts of a washing machine rinsing control device according to an embodiment of the present invention, FIG. 2 is a detailed block diagram of the same,
FIG. 3 is a flowchart of the main parts, and FIG. 4 is a longitudinal sectional view of a conventional washing machine. 2...Washing tub, 6...Drain valve, 18.
... Water supply valve, 19 ... Water level setting means, 2
0... Water level detection means, 24... Control means. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 4

Claims (1)

[Claims] A water level setting means in the washing tub, a water supply valve for supplying water into the washing tub, a drain valve for draining water in the washing tub, a control means for controlling the water supply valve and the drain valve, and a water level in the washing tub. and water supply and drainage capacity detection means for detecting water supply and drainage capacity, and the control unit keeps the water supply valve ON during the rinsing process to maintain the water level set by the water level setting unit. The water level from the water level detecting means is compared, and when the water level rises by a predetermined level from the water level setting means, the drain valve is turned on to drain the water, and when the water level decreases to the set water level, the drain valve is turned off. A rinsing control device for a washing machine that changes a predetermined rise in water level from a set water level according to water supply and drainage capacity detected by a water supply and drainage capacity detection means.