JPH0245914B2 - CHOSUISOTSUKI SENTAKUKI - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention provides a water storage system in which soap water and rinsing water can be pooled in a water storage tank and returned from the storage tank to the washing tank in a timely manner to reuse the water. Regarding washing machines with tubs.

(b) Prior Art This type of washing machine is disclosed in, for example, Japanese Utility Model Application No. 169284/1984, and a new washing method using a water tank has been proposed in Japanese Patent Application No. 114717/1982. The latter conventional example introduces a portion of the rinsing water into the water tank at the time of draining to wash the water tank. However, for example, when water remained in the water tank after returning water from the water tank to the washing tank, the treatment of this remaining water was not sufficient. In other words, if there is too much residual water to be detected by the float switch, the liquid will be moved.
Residual water can contaminate new recycled water. Also,
It is not possible to drain the remaining water during operation, and it will not be done in time, so I have to turn off the power switch.
Then, all the driving courses I had set up were also cleared. Furthermore, since a separate selector must be operated in order to discharge the remaining water, if the operator forgets to return the selector, it may interfere with the next operation.

(c) Problems to be Solved by the Invention The present invention aims to automatically and reliably dispose of residual water in a water storage tank.

(d) Means for Solving the Problems In the washing machine with a water tank according to the present invention, the pump rotates for a predetermined period of time in the direction of draining water from the water tank after the water starts draining after the washing process.

(E) Function: Drainage starts from the washing tank, for example, after the liquid level switch is reset (OFF), the pump is rotated for one minute, and the remaining water is sent from the water tank to the washing tank and drained at the same time. Then, the remaining water in the water storage tank is automatically drained at the time of this draining, and at the same time, the water supply pressure is used to discharge dirt and the like in the connecting waterway that connects the tanks. Of course, this residual water treatment operation is not performed in an operation that pools soapy water.

(f) Example To explain based on the drawings, 1 is a frame on which the outer tank 2 is suspended in a vibration-proof manner, 3 is a dewatering/washing tank rotatably arranged inside the outer tank 2, and 4 is a washing tank. Dehydration hole drilled in the peripheral wall of tank 3, 5 is a balance ring, 6
is 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 in the water storage tank 16 is drained when the drain valve 10 and the connecting valve 17 are opened.

With the drain valve 10 closed, when the pump 19 is rotated in the normal direction, the water in the washing tub 3 is transferred to the water tank 16 (hereinafter referred to as liquid transfer), and when the pump 19 is rotated in the reverse direction, the water in the water tank 16 is transferred to the washing tub 3. (hereinafter referred to as liquid return).

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, 25 is a liquid level switch that detects the water level of the washing tub 3 via an air trap, and 26 is a liquid level switch that detects whether there is water in the water tank 16 or not.

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 clockwise rotation of the drive motor 7, 58 is a drive circuit for counterclockwise rotation, 59 is a drive circuit for forward rotation of pump motor 20, 6
0 is a drive circuit for reverse rotation, and 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. 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 (ON) when water is supplied to the set water level. After setting, when the water level drops considerably, it will be reset (turned OFF) at approximately the same water level, although it 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 selectively designated (see FIG. 5). When you specify a course other than the standard course, one of the corresponding LEDs 42, 42, 42 lights up,
For standard course, 3 LEDs 42, 42, 4
2 goes out.

32 is a washing key, and the washing time during the washing process is changed from 12 minutes to 6 minutes to 3 minutes to none each time the key is operated. 33 is the rinse key to drain water (or move liquid)
- Intermediate dehydration - Water supply - Change the number of times of the first rinsing process called rinsing and the second rinsing process of draining - intermediate dehydration - water supply - rinsing from 2 times - 1 time - never. . 34 is a dehydration key, and each time the key is operated, the dehydration time of the dehydration process is changed from 6 minutes to 3 minutes to 1 minute to none. These keys 32,3
The setting time (number of times) according to 3 and 34 is not the maximum,
When a change is made by the user, a manual operation flag is set if the change is made before the start key is operated, and a flag for each of the keys 32, 33, and 34 is set after the start key is operated. LED43 to 45 correspond to the number excluding none,
If there is none, it is displayed as off (see Figures 6 to 8).
The rinsing time during the rinsing process is 2 minutes.

35 is a water flow key, which switches the reversal cycle of the rotary blade 6 between "Strong" - "Soft" - "Standard" each time the key is operated, but switching is prohibited if the blanket washing course or sweater washing course is set. (See Figure 9). This reversal cycle is a collection of single periods in which the rotor blade 6 rotates clockwise, rests, rotates counterclockwise, and rests, and the left and right rotation times of each single period gradually become longer on one side and gradually shorter on the other. Subsequently, one becomes gradually shorter and the other becomes gradually longer. The above three types of water flow are distinguished according to the length of rotation time and the length of rest time. The above-mentioned single cycle is not divided by the set time or the operation of the stop key, and always starts with a clockwise rotation and ends with a pause after a counterclockwise rotation. LED46,47,
48 corresponds to the display characters of each water stream and is displayed by lighting up.

Reference numeral 36 is a careful rinsing key, which sets the type of rinsing in the rinsing process from normal rinsing to water pouring rinsing, which increases the rinsing effect, and switches between water pouring and no water pouring each time the key is operated. If rinsing with water is set when rinsing is set twice with the rinse key 33, the first rinse cycle will be a test rinse, the second rinse will be a water rinse, and the duration of the second rinse will be 1 minute. Extend.
The LED 49 lights up when water is being poured, and is off during normal rinsing (see Figure 10).

37 is a start key for storing soapy water for the washing process in the water tank 16 (soap water pool), 38 is a start key for storing rinsing water for the second rinsing process (rinsing water pool), and 39 is a start key for storing water. 40 is a start key for when there is no pool (no pool), and a stop key for temporarily stopping the operation. LED5
0, 51, 52 are each start key 37, 38, 3
It lights up by key operation corresponding to 9.

41 is when washing the washing tub 3 and water tank 16 with cloth water,
This is a cleaning key used to drain the remaining water in the water tank 16. When the liquid level switch 25 on the washing tank 3 side is set (ON) at the first operation, the solenoid 1 is activated.
3 to open the drain valve 10. When the liquid level switch 25 is reset (OFF), the drain valve 10
Rotate the pump 19 in the opposite direction while leaving the water tank 1 open.
Drain from 6 as well. 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, it indicates drainage.
The LED 53 is now lit, and the cleaning key 41 is now operated again. Then, the drain LED 53 is turned off, the water supply LED 54 is turned on, and the water supply LED 54 is turned off.
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. 3 minutes after the first key press,
The drain valve 10 is closed, the pump 19 is stopped, and the buzzer 61 notifies the end of the process. Water supply time mentioned above (2 minutes
If you want to stop the water supply after cleaning is finished during 30 seconds), press stop key 40 or press cleaning key 4.
Operate 1 further. Stop key 40 in this case
This operation is not a temporary stop, but an operation that immediately returns to the initial state in which only the power switch is closed.
If the cleaning key 41 is operated further, the water supply LED
54 is turned off, the drain LED 53 is turned on, and the drain mode continues until 3 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, only LED 47 is lit among other LEDs, and when 3 minutes have passed, water supply and drainage
The LEDs 53 and 54 go out together (see Figure 4).

Next, the driving operation will be explained with reference to FIG. 12. First, when the knob 29 of the power switch is closed, the microcomputer 28 is reset and cleared. Start key 3 before other key operations
7, 38, 39 is operated and the corresponding
When any of LEDs 50, 51, 52 lights up,
Fully automatic operation of the standard course begins. At this time, all the 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.

On the other hand, if the wash key 32, rinse key 33, or dehydration key 34 is operated before the start keys 37, 38, 39, manual operation (preferred operation) according to the user's key settings starts, and the manual operation starts. A flag is set. In this case, the LED corresponding to the shorter (less) time (number of times) than the setting is lit. In addition, if you operate the same start key again after a temporary stop using StopPoo 40 while driving, the operation will continue as it is, but if you operate another start key, the operation will continue according to the other start key and the start will be changed. A flag is set (first
(See Figure 1).

Furthermore, course change operations using the special wash key 31 and cleaning operations using the cleaning key 41 are not accepted once the start keys 37, 38, and 39 are operated to start the operation. Changing operations using the water flow key 35 and the careful rinse key 36 can be accepted without operating the stop key 40. Changing operations using the wash key 32, rinse key 33, and dehydration key 34 are accepted while being temporarily stopped using the stop key 40.

Thus, when the standard course fully automatic operation starts, if there is water in the water tank 16 (the liquid level switch 2
6 is ON), the liquid returns, or the water supply valve 24 is further opened to replenish water, or if there is no water in the water tank 16, the water supply valve 24 is opened from the beginning and water is supplied. When the set water level is reached, the liquid level switch 25 on the washing tub 3 side is set (ON), the water supply valve 24 is closed, and the rotary blade 6 is rotated clockwise by the drive motor 7 in accordance with the water flow specified with the water flow key 35. Start from.

During the rinsing process, the rotary blade 6 is used for rinsing as well as washing.
is intermittently reversed from clockwise rotation, but the left and right rotation times are the same, and the pause time is constant. The water flow of “Strong” and “Standard” is the same.
A "soft" water stream has a short rotation time and a long rest time. If the thorough rinse key 36 is operated, a preliminary rinse is executed in the first rinse process. Then, the second rinsing process is the draining process.
Intermediate dewatering, water supply, and then rinsing are executed in this order, and this rinsing is water injection rinsing with the water supply valve 24 open. The drain hose 12 must be turned down before washing begins, but if it is not turned down, the liquid level switch 25 on the washing tub 3 side will not be reset (OFF) during the second rinsing process, and the water level switch 25 will not reset (OFF). In response, the buzzer 61 intermittently sounds and alerts, and the lit LED group flashes to alert.
The rinsing time of the second rinsing step is extended from 2 minutes to 3 minutes by adding 1 minute to achieve the same rinsing effect as when performing water pouring rinsing from the first time.

Washing and rinsing in the washing and rinsing steps are explained in the "Washing" subroutine shown in FIG. Note that the opening and closing operations of the water supply valve 24 are added in the figure for convenience.

During the dehydration process, drain the water and turn the liquid level switch 2.
It is executed when 5 is reset (OFF). At this time, the solenoid 13 is energized to open the drain valve 10, the clutch device is operated, the brake device is released, and the drive motor 7 is driven clockwise. Clothes in the washing tub 3 are dehydrated by centrifugal force. After the time has ended, the drain valve 10 is closed. In addition, when abnormal vibration due to unbalanced load occurs and is detected, the solenoid 13 is de-energized and the drive motor 7 is
and close the drain valve 10, supply water to perform rinsing for 1 minute, and restart dewatering. If abnormal vibration is detected even after repeating this up to three times, the buzzer 61 and the
A flashing LED will notify you (see Figure 14). Further, if the abnormality notification is canceled by the stop key 40 and the start key is operated, dehydration is started, but at this time, the counter of the vibration detection section is cleared.

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 all are turned off at the end of the course.

When starting, if the start key 37, which stores soapy water in the water tank 16, is operated, the water is drained after the washing process (first rinsing process), and if the start key 38, which stores rinsing water, is operated, it is the second rinsing process. At the time of draining after the process (dewatering process), the pump motor 20 and the pump 19 rotate forward, respectively, to move the liquid. In this case, the condition is that the liquid level switch 26 on the water tank 16 side is closed and there is no water in the water tank 16. The pump motor 20 and the pump 19 are turned off 27 seconds after the liquid level switch 25 on the washing tub 3 side is reset (OFF), or the pump motor 2
It will stop after 84 seconds after 0 starts rotating forward. Then, one second later, the solenoid 13 is energized to open the drain valve 10, and 15 seconds later, the liquid movement ends. If the liquid level switch 25 is not reset (OFF) even after a maximum of 2 minutes and 30 seconds have elapsed since the pump motor 20 started rotating normally, the pump abnormality is set and liquid movement is terminated (see FIG. 15). The above 84 seconds is the time required for the pump 19 to fill the water tank 16 without overflowing. Also, from reset
27 seconds is enough time for the pump 19 to pump out the remaining water in the washing tub 3.

Further, when returning the liquid, the pump 19 is rotated in the reverse direction on the condition that there is water in the water tank 16 and there is no water in the washing tub 3. When the water in the water tank 16 falls below a predetermined level, the pump 19 will stop after 13 seconds, and if the water level in the water tank 16 does not drop even after 2 minutes and 30 seconds have passed since the reverse rotation, the pump abnormality will be set and the liquid will be restored. ends (see Figure 16).

Among the courses set by the special washing key 31, the speedy course shortens the washing time, rinsing time, and dehydration time, but the blanket washing course and sweater washing course use the water tank 16 in the washing process. (See Figure 17)
Execute. The water flow at this time is a soft water flow regardless of the operation of the water flow key 35.

The driving operation shown in FIG. 12 will be explained in more detail. In the next rinsing process after the washing process, if the start key 38 for the rinse water pool or the start key 39 for no pool is used to start, drainage will be set for 1 minute on condition that the liquid level switch 25 is set (ON), and the water will be drained. is executed. At this time, as shown in Fig. 18, the drain valve 10 opens and natural drainage begins, and when the liquid level switch 25 is reset (OFF), the pump 19 is rotated in reverse for one minute.
The drain valve 10 is closed and the pump 19 is stopped. That is, at this time, the water that remained in the water tank 16 without being returned to liquid, and the small amount of water that remained after returning to liquid, were drained.
At the same time, dirt and the like that tend to accumulate in the connecting waterway 18 are also discharged together by the water supply pressure of the pump.
In addition, when draining the water in the water tank 16 prior to washing, the cleaning key 41 is used.

Further, in normal draining operation, if the liquid level switch 25 is not reset (OFF) even after 2 minutes and 30 seconds have passed after the drain valve is opened, the drain valve 10 is closed and an abnormality is notified by a buzzer and blinking LED. This notification can be stopped by operating the stop key 40, and the drainage operation can be restarted by operating the start key.

In operation centered on Figure 12, liquid movement,
If a pump abnormality is set during the liquid return operation, the pump abnormality will be indicated by an intermittent sound from the buzzer 61, for example, at the end of the operation when the dewatering process is completed.
Alert by blinking LED. Unlike the continuous sound of the buzzer 61 for a certain period of time when there is no abnormality, this last abnormality notification continues and does not stop even when the stop key 40 is pressed and the power switch 29 is turned off.
Stops only when turned OFF. That is, if the pump is abnormal, it can be distinguished from other abnormalities.

The features of this embodiment will be explained in comparison with the conventional example.

(A) When soap water is not pooled, the drain is set for 1 minute before draining during the washing process, and the remaining water in the water tank 16 is drained during the draining operation, and at the same time, the water is connected to the connecting channel by the pump water pressure. The garbage etc. in 18 will be discharged. For example, when the liquid is restored,
If the set water level is low, water remains in the water tank 16, and conventionally, this remaining water was discharged by a separate operation at the end of the operation. Also, if there is residual water,
The liquid could not be moved, causing problems with the water storage function and deliquid cleaning. However, in this embodiment, the remaining water can be automatically discharged to maintain the water storage function, and other operating operations can be performed reliably.

(B) Start keys 37, 38, and 39 are provided separately for soap water pool, rinse water pool, and no pool, and are also used for pool-related operations. In contrast, in the past, operations related to the pool were performed using a separate selector, and if you forget this, you may not be able to pool even though you want to pool, or you may be able to pool even dirty soapy water after washing twice that you do not want to pool. It was hot. In addition, the operation of the selector and start operation was problematic in terms of operability. In this embodiment, there is no need to operate the selector, which improves operability and prevents the user from driving the vehicle involuntarily.

(C) Select drainage mode and water supply/drainage mode using the cleaning key 41 and turn off the power switch 29.
Even if you do not, clean both tanks 3 and 16 independently with city water. On the other hand, in the past, a separate selector was used to drain water according to the water discharge, and a separate start key was used to supply water.If you wanted to interrupt operation midway and clean the tank, you had to turn off the power switch and clear all water. It had to be in a state of
In addition, it was necessary to turn off the power switch when starting operation after cleaning the tank early. However, in this embodiment, draining the tank or supplying city water in the drained state can be selected by simply operating the cleaning key 41, and if the cleaning is completed quickly and the stop key 40 is operated, only in this case it will not be temporarily stopped. It can be returned to its initial state, and operational performance can be significantly improved. In addition, in the case of the conventional example, if the selector is forgotten to be returned to its original position after draining water, the next operation is impossible, but in the present embodiment, forgetting to operate is less likely.

(D) The blanket washing course or sweater washing course performs dehydration washing for items such as blankets and sweaters that are easily damaged by lint when washed vigorously. The water flow in the washing process is automatically set to a soft water flow, and no change operation using the water flow key 35 is accepted. In addition, the spin-drying time is set short to prevent wrinkles and improve the final finish. On the other hand, conventionally, when cleaning blankets and the like to remove liquid, it was not possible to set the water flow, and the only option was to use the same water flow as for normal laundry. Therefore, in this embodiment, blankets, sweaters, etc. can be effectively washed by deliquid washing, and can be washed without damaging the texture. Furthermore, once the course is selected, there will be no accident of over-washing due to incorrect operation.

(E) Various start keys 37, 38, 39 and a stop key 40 are provided, and the stop key 40 can be used to temporarily stop the operation. When any start key is operated after stopping, the operation is compared with the operation of the first start key, and if the operation is the same, the remaining operation is continued, and if they are different, the remaining operation is performed in accordance with a different start key. For example, if the user notices that the water is dirty while moving the liquid, the user may interrupt the transfer, change to the start key 39 that does not move the liquid (no pool), and stop moving the liquid. Alternatively, the start key 39, which does not pool, may be used to temporarily stop the operation and change to the start key 37 or 38, which moves the liquid, to store water that can be reused. However, in the latter case, the condition is that the liquid level switch 25 is not reset (turned off). On the other hand, in the past, there was no function to temporarily stop the vehicle during driving, and even if the selector was operated to select whether to pool or not pool during driving, it was not accepted. Also, when I turned off the power switch, all was cleared and the previous operation ended. Therefore, this embodiment can significantly improve operational performance and usability.

(F) Abnormality notification is an intermittent sound of the buzzer 61, LED 42
This is executed by blinking 54, but it can be stopped by operating the stop key 40, except in the case of pump abnormality. However, the reporting of pump abnormality continues unless the power switch 29 is turned off at the end of the operation. In contrast, conventionally, any kind of abnormality was detected by turning off the power switch.
If I didn't, it wouldn't have stopped. Therefore, in this embodiment, an abnormality in the pump, which is the basic structure of a washing machine with a water storage tank, can be distinguished from other abnormalities, and can be recognized as a serious abnormality. Also,
This can be compared to a continuous sound to notify the end of operation, and the abnormality notification function has been improved.

(g) Effects of the Invention According to the present invention, the remaining water in the water tank can be automatically and reliably drained during operation, and the water tank becomes less dirty, which prevents new pool water from becoming dirty with old remaining water. No problem. Therefore, it is possible to provide a washing machine with a water storage tank that is clean and easy to use.

[Brief explanation of the drawing]

FIG. 1 is a front longitudinal sectional view of a washing machine with a water storage tank according to the present invention, and FIG. 2 is a block diagram showing a control circuit section.
Figure 3 is a front view of the control box, Figures 4 to 1
FIG. 8 is a flowchart for explaining the operation. 3...Washing tub, 9...Drain port, 10...Drain valve, 16
...Water tank, 18...Connection waterway, 19...Pump, 28
...Microcomputer (control means), 25...Liquid level switch.

Claims (1)

[Claims] 1. In a washing machine with a water tank, which is equipped with a washing tank and a water storage tank, the two tanks are connected by a connecting waterway, and water is reciprocated between the two tanks by a reversible pump, the washing process in the washing tank is as follows: A washing machine with a water storage tank characterized in that the pump is rotated for a predetermined period of time in a direction to discharge water from the water tank after the subsequent drainage starts.