JPS6345838B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a washing machine equipped with a control circuit that causes a rinsing process involving drainage from a drainage hose to be executed at least twice.

(b) Conventional technology A general fully automatic washing machine, for example,
As shown in Japanese Patent No. 31957, after the washing process, a drainage process consisting of draining water and rinsing is performed multiple times. If you forget to turn down the drain hose in such a washing machine, the drainage will become abnormal and the user will be alerted, but in order to reuse the detergent solution, it may be pumped into a bucket or the like without draining, or the detergent solution may be pumped into a recycling tank. If the water is transferred automatically, you may not realize that you forgot to turn down the drain hose when draining water.

Therefore, when the type of rinsing in the next rinsing step is water pouring rinsing, water sometimes overflows from the washing tub during the first rinsing step.

(C) Problems to be Solved by the Invention The present invention prevents water from overflowing by rinsing during the first rinsing process to prevent water from overflowing even if the water injection rinsing is set, and by reminding users that they have forgotten to turn down the drain hose at the time of subsequent drainage. The aim is to prevent this. Additionally, the water injection rinsing process time is extended to ensure the rinsing effect.

(d) Means for solving the problem The present invention provides at least two rinsing steps that involve drainage.
In a washing machine equipped with a control circuit unit that causes the washing to be performed twice, the control circuit unit includes a setting unit for setting the type of rinsing, and a notification unit for notifying a drainage abnormality.
A washing machine characterized in that, when the setting means sets the water injection rinsing, a control means is provided for causing a preliminary rinse to be performed in the first rinse stroke and a water pouring rinse for a predetermined period of time to be performed in the second rinse stroke. be.

(E) Effect: That is, if the drain hose remains erect when water injection rinsing is set, a drainage abnormality will occur during drainage after rinsing because it is the first time, and the notification means will notify the user of this abnormality. Therefore, at this point, the drain hose is folded down and the second rinsing process is a water pouring rinse. Moreover, since the first rinse is used as a test rinse instead of rinsing with water twice (more than twice) and rinsing carefully, the process time of this second rinse with water is extended for a predetermined period of time to ensure the rinsing effect. do. In short, it determines whether you forgot to turn down the drain hose after one cycle, and if so, it notifies you and forces the hose to fall, preventing water from overflowing and extending the rinsing time to achieve the desired rinsing effect. .

(f) Embodiment An example of a fully automatic washing machine with a water tank that can store detergent liquid or rinse water in a water tank for reuse will be described based on the drawings. 1 is a frame on which the outer tub 2 is suspended in a vibration-proof manner; 3 is a dewatering/washing tub rotatably disposed inside the outer tub 2; 4... is a dewatering hole drilled in the peripheral wall of the washing tub 3; Reference numeral 5 indicates a balance ring, and reference numeral 6 indicates a large-diameter mountain-shaped rotary blade rotatably disposed at the center of the bottom of the washing tub 3. On the outer bottom surface of the outer tub 2, there is a drive motor 7 and a bearing that rotates the rotor blade 6 intermittently at low speed (approximately 180 rpm) and simultaneously rotates the rotor blade 6 and the washing tub 3 in one direction at high speed. Case 8 is provided. Further, a drain port 9 of the washing tub 3 is provided on the bottom surface of the outer tub 2, and the drain port 9 is connected to a bellows-shaped drain hose 12 which can be raised and lowered via a drain valve 10 and a drain channel 11. Reference numeral 13 denotes a solenoid that opens the drain valve 10 when energized, and when energized, operates a clutch device (not shown) to transmit the rotation of the drive motor 7 to the rotary blade 6 and the washing tub 3. 3. Release the brake device (not shown). Reference numeral 14 denotes an overflow port provided in the outer tank 2, which communicates with the drainage channel 11 via an overflow hose 15.

Reference numeral 16 denotes a water tank attached to the side surface of the frame 1, the bottom of which is connected to the drain port 9 via a connecting valve 17 and a connecting waterway 18. 19 is a reversible pump installed at a position upstream of the valve 17 of the connecting waterway 18, that is, at the bottom of the water tank 16;
Driven by 0. Note that the connecting waterway 18 communicates with the drainage channel 11 via the drainage valve 10. Furthermore, when the pump motor 20 is driven, the connecting valve 17 is automatically opened by electromagnetic force in the thrust direction of the motor's rotor. The detergent liquid and water in this water storage tank 16 are drained when the drain valve 10 and the connection valve 17 are opened.

With the drain valve 10 closed, when the pump 19 is rotated in the normal direction, the liquid/water in the washing tub 3 is transferred to the water storage tank 16, and when the pump 19 is rotated in the reverse direction, the liquid/water in the water storage tank 16 is transferred to the washing tub 3. .

21 is an upper lid for opening and closing the upper opening of the washing tub 3;
2 is the lid of the water tank 16, 23 is an electromagnetic water supply valve 24
This is a water supply port connected to the water supply channel via. Further, the washing tub 3 is provided with a liquid level switch 25 via an air trap, and the water storage tank 16 is provided with a liquid level switch 26 that detects whether there is liquid/water in the tank.
is provided.

27 is a control box, and a microcomputer (hereinafter referred to as microcomputer) 28 serves as a control means.
It is equipped with a control circuit shown in Figure 2 which connects various output means and various input (setting) means, and the front panel has knobs and keys for operating the input (setting) means as shown in Figure 3. 29 to 41 and light emitting diodes for operation display or status notification (hereinafter referred to as
(referred to as LED) 42 to 54 are provided.

In FIG. 2, the liquid level switches 25, 26
The detection signal of the upper cover 21, the opening/closing signal of the upper cover switch 55 linked to the opening and closing of the upper cover 21, and the reset signal of the reset circuit 56 are inputted to the microcomputer 28. 57 is a drive circuit for rotating the drive motor 7 clockwise, 58 is a drive circuit for rotating the drive motor 7 counterclockwise, 59 is a drive circuit for rotating the pump motor 20 in the normal direction, 60
Similarly, numeral 61 is a drive circuit for reversing the rotation, and numeral 61 is a buzzer as a notification means for notifying the user of various conditions.

Next, various knobs, keys and operations shown in FIG. 3 and processing by the microcomputer 28 will be explained.

29 is the power switch knob, 30 is the washing tub 3
This is a water level switch knob for setting the water level between high, medium, low, and small amounts. The set point of the liquid level switch 25 on the side of the washing tub 3 is adjusted according to the water level setting of the water level switching knob 30, and is set (closed) when water is supplied to the set water level. After setting, when the water level drops considerably, it will be reset (opened) at approximately the same water level, although this is related to the load amount.

31 is a special washing key, speedy course,
A blanket washing course, a sweater washing course, and a standard course are each alternatively designated. If you specify a course other than the standard course, the corresponding LED42,
42, 42 is lit, and in the case of the standard course, the three LEDs 42, 42, 42 are turned off.

32 is a washing key, which changes the washing process time from 12 minutes to 6 minutes to 3 minutes to 0 each time the key is operated. Reference numeral 33 denotes a rinse key, which changes the number of rinse steps consisting of sub-steps of drainage, intermediate dewatering, water supply, and rinsing from 2 times to 1 time to 0 each time the key is operated. 34 is a dehydration key, which changes the time of the final dehydration step from 6 minutes to 3 minutes to 1 minute to 0 each time the key is operated. LED43-45
corresponds to numbers excluding 0, and 0 is displayed as off.
Note that the rinsing time during which the rotary blade 6 is intermittently reversed in the rinsing process is set to 2 minutes.

35 is a water flow key, which changes the reversal cycle of the rotary blade 6 between "strong", "soft" and "standard" each time the key is operated. This reversal cycle starts with a clockwise rotation, changes to a counterclockwise rotation after a pause, and then repeats this cycle.The above three types are determined by changing the length of the rotation time and the pause time. Also, if each inversion cycle is artificially stopped during execution,
When the set time has elapsed, the rotary blade 6 always rotates to the left and stops when it stops, and the next time it is started, it starts rotating to the right. The LEDs 46, 47, and 48 correspond to "strong", "soft", and "standard", and are displayed by lighting.

36 is a careful rinsing key which sets the type of rinsing in the rinsing process from normal rinsing to water injection rinsing which increases the rinsing effect, and is switched between water injection and no water injection each time the key is operated. If water rinsing is set when rinsing is set twice using the rinse key 33, the first rinsing process is a test rinse, the second rinsing process is a water rinsing, and then the rinsing sub-stroke process time during the second rinsing process is changed to water rinsing. Extend for 1 minute. The LED 49 lights up when water is being poured, and is off during normal rinsing.

37 is the start key for storing the detergent liquid for the washing process in the water storage tank 16 (detergent liquid pool), 38 is the start key for storing the rinse water for the second rinsing process (rinsing water pool), 39 is the liquid/water The start key 40 is a stop key for keeping only the power switch closed in the control circuit. The LEDs 50, 51, 52 are turned on by key operations corresponding to the respective start keys 37, 38, 39.

Reference numeral 41 is a cleaning key for washing the washing tub 3 and the water storage tank 16 with city water.If the liquid level switch 25 on the washing tub 3 side is set (closed) at the first operation, the solenoid 13 is energized to drain water. Open valve 10. When the liquid level switch 25 is reset (opened), the pump 19 is reversed while the drain valve 10 remains open, and water is also drained from the water tank 16. It is determined whether the LED 54 indicating water supply is lit, and if it is lit, the water supply valve 24 is opened for 2 minutes and 30 seconds. If the light is off, the LED 53 indicating drainage is lit instead, and the cleaning key 41 is operated again. Then, the drainage LED53
Turn off the water supply LED54 and turn on the water supply LED54.
4 is turned on, and the water supply valve 24 is opened as described above. Thus, by connecting a hose to the water supply port 23, both tanks 3 and 16 can be cleaned with city water. Three minutes after the first key operation, the drain valve 10 is closed and the pump 19 is stopped.
A buzzer 61 notifies the end. If cleaning is completed during the above-mentioned water supply time (2 minutes and 30 seconds) and you wish to stop the water supply, operate the stop key 40 or operate the cleaning key 41 further. When the stop key 40 is operated, the system immediately returns to the initial state in which only the power switch is closed. When the cleaning key 41 is further operated, the water supply LED 54 is turned off and the drain LED 53 is turned on, and the drain mode continues until three minutes have elapsed. In this way, each time the cleaning key 41 is operated, the water supply and drainage mode in which the water supply LED 54 is lit and the drainage mode in which the drainage LED 53 is lit are alternately repeated. During this cleaning operation, among other LEDs, the LED
Only LED 47 is lit, and this also goes out together with the water supply and drainage LEDs 53 and 54 when 3 minutes have elapsed. This cleaning operation and the turning on and off of each LED are shown in the flowchart of FIG.

Next, the operation of the washing machine will be explained. First, when the knob 29 of the power switch is closed, the microcomputer 28 is reset, and any of the start keys 37, 38, and 39 is operated to select the corresponding one.
When any of the LEDs 50, 51, and 52 lights up, the standard washing course starts running. At this time,
All LEDs 43 to 45 corresponding to the washing, rinsing, and dehydrating keys 32, 33, and 34 are lit. Three LEDs 42, 42, corresponding to the special washing key 31,
42, if no key is operated, the light goes out to indicate the standard course.

In this way, if there is liquid/water in the water tank 16 (detected by the liquid level switch 26), it is transferred to the washing tank 3 by reversing the pump 19, or the water supply valve 24 is further opened to replenish the water, or the water is supplied to the washing tank 3. If there is no liquid or water in the tank 16, the water supply valve 24 is opened from the beginning to supply water. The liquid level switch 25 on the side of the washing tub 3 is set (closed) to reach the set water level, the water supply valve 24 is closed, and the drive motor 7 is rotated clockwise in accordance with the reverse water flow specified by the water flow key 35. Drive in the direction. The rotary blade 6 is reversed from right to rest to left, with a maximum of 12
After a minute has elapsed, it will always rotate to the left and then stop. As a result, it sometimes takes a little longer than 12 minutes. Furthermore, when the operation is interrupted by operating the stop key 40 midway, the operation is also interrupted by the pause after the counterclockwise rotation. Therefore, mechanically, the clutch spring is loosened and the shafts of the rotary blade 6 and the washing tub 3 are not mechanically coupled to each other. This reversal operation is shown in the flowchart of FIG.

In the rinsing process, which includes draining water, intermediate dewatering, water supply, and rinsing, the rotary blade 6 is intermittently reversed in the same way as in the washing process. If the thorough rinse key 36 is operated, a preliminary rinse is executed in the first rinse process. Then, the second rinsing process is executed in the order of drainage, intermediate dewatering, water supply sub-processes, and rinsing sub-process, but this rinsing sub-process consists of water injection rinsing with the water supply valve 24 open. Drain hose 1
2 must be knocked down before starting washing, but if it is not, the liquid level switch 25 on the washing tub 3 side will be turned on during the drain sub-step of the second rinse step.
does not reset (open), and in response to this, buzzer 6
1 gives a notification and the LED group that is lit flashes to give a notification. The time of the rinsing sub-step of the second rinsing step is extended from 2 minutes to 3 minutes by adding 1 minute to obtain the same rinsing effect as when performing the water pouring rinse from the first time. This operation is shown in the flowchart of FIG.

The final dewatering step, centrifugal dewatering, is carried out when the water is drained and the liquid level switch 25 is reset. At this time, the solenoid 13 is energized, the clutch device is operated, the brake device is released, and the drive motor 7 is
Drive by clockwise rotation. Clothes in the washing tub 3 are dehydrated by centrifugal force.

Wash key 32, rinse key 33 and dehydration key 3
The LEDs 43 to 45 corresponding to No. 4 are turned off one by one as each stroke progresses and the corresponding time and number of times have elapsed, and are all turned off at the end of the course.

When starting, if the start key 37 that stores the detergent solution in the water storage tank 16 is operated, the water is drained after the washing process (first rinsing process), and if the start key 38 that stores the rinse water is operated, it is the second rinsing process. At the time of drainage after the stroke (final dewatering stroke), the pump motor 20 and the pump 19 rotate normally. In this case, the condition is that the liquid level switch 26 on the side of the water storage tank 16 is closed and that there is no liquid or water in the water storage tank 16. Pump motor 20 and pump 1
9 is stopped 27 seconds after the liquid level switch 25 on the washing tub 3 side is reset (opened) or 84 seconds after the pump motor 20 starts rotating normally. After one second, the solenoid 13 is energized and the drain valve 1 is
0 is released, and the liquid/water transfer process ends 15 seconds later. If the liquid level switch 25 is not reset even after a maximum of 2 minutes and 30 seconds have elapsed since the pump motor 20 started rotating normally, the transfer process is stopped as a pump abnormality.
The operation of this transfer process is shown in the flowchart of FIG. The above 84 seconds is the water tank 1 by the pump 19.
This is the amount of time it takes to fill 6 without overflowing. Further, 27 seconds from the reset is a time long enough for the pump 19 to pump out the remaining water in the washing tub 3.

(G) Effects of the Invention According to the present invention, when water injection rinsing is set when performing multiple rinsing processes, the first rinsing process is used as a trial rinse to check the drainage condition, so it is possible to avoid problems caused by forgetting to turn down the drain hose. Water does not overflow during rinsing. In addition, since the water injection rinsing time in the subsequent rinsing step is extended, the rinsing effect originally obtained by performing water injection rinsing from the beginning can be maintained even though preliminary rinsing is performed. Therefore, the present invention can provide a safe and practical washing machine.

[Brief explanation of drawings]

FIG. 1 is a front longitudinal sectional view of a washing machine according to the present invention;
FIG. 2 is a block diagram showing the control circuit section, FIG. 3 is a front view of the control box, and FIGS. 4 to 7 are flowcharts for explaining the operation. 3...Washing tub, 28...Microcomputer (control means), 29-41...Knob, key (setting means), 42-54...Light emitting diode (notification means), 61...Buzzer (notification means).

Claims (1)

[Claims] 1. In a washing machine equipped with a control circuit unit that sequentially moves the process to washing, draining, first rinsing, draining and second rinsing, the control circuit unit includes a setting means for setting the type of rinse; A notification means for notifying a drainage abnormality, and a control means for causing a preliminary rinse to be performed in the first rinsing process and a water rinsing extended for a predetermined time to be performed in the second rinsing process when the setting means sets water rinsing. A washing machine characterized by: