JPS6365000B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a washing machine with a water storage tank that is provided with a washing tub and a water storage tank in which liquid in the washing tub is stored for reuse.

(b) Conventional technology In conventional washing machines with a water storage tank, if the water tank got dirty during use, the water tank was washed by introducing water from a water tap separate from the washing machine with a hose. If there is no water faucet nearby, the washing machine's water supply hose must be removed, which is troublesome.

(c) Purpose of the Invention The object of the present invention is to provide a washing machine with a water storage tank that allows the water tank to be easily cleaned when the water tank becomes conspicuously dirty, and also allows for easy cleaning of the interior of the washing tank. shall be.

(d) Structure of the invention The present invention includes a valve device for draining liquid in a water storage tank;
It has a water supply valve and a water supply port to which water from the water supply valve is supplied into the washing tub and to which an external hose can be connected, and a process is provided in which both the valve device and the water supply valve are opened for a predetermined period of time. It is.

With this configuration, even if there is no water faucet other than the water faucet for water supply to the washing machine, by performing the above process with the compartment hose connected to the water inlet, water can be easily guided to the water tank with an external hose. The water tank can be washed, and the washing tank can also be washed with an external hose.

(e) Examples Examples of the present invention will be described below based on the drawings. Fig. 1 shows the main structural parts of a washing machine with a water storage tank according to the present invention, in which 1 is a frame in which an outer tank 2 is suspended in a vibration-proof manner, and the outer tank 2 also serves as a dehydration tank. A washing tub 3 is provided. A peripheral wall of the washing tub 3 has a large number of dehydration holes 4. 5 is a balance ring. A rotary blade 6 is disposed at the center of the bottom of the washing tub 3. On the back surface of the outer tub 2, a rotary blade 6, a drive motor 7 for rotating the washing tub 3, and a bearing case 8 are mounted. A drain port 9 of the washing tub 3 is provided at the bottom of the outer tank, and the drain port 9 is connected to a drain channel 11 via a drain valve 10. 12 is a solenoid for operating a drain valve;
The valve opens by energizing. This solenoid 12 also operates a clutch device and a brake device (not shown) and is energized to engage the clutch device and transmit the rotation of the drive motor 7 to the washing tub 3 as well as the rotary blade 6. Release the brake device. Reference numeral 13 denotes an overflow port, which is communicated with the drainage channel 11 through an overflow hose 14.

A water tank 15 is attached to the side of the frame 1,
The bottom of the water tank 15 and the drain port 9 are connected to a connecting waterway 16.
are connected. The connecting waterway 16 has a connecting valve 17 and a reversible pump 18 for opening and closing the waterway. The reversible pump 18 is driven by a pump motor 19. The pump 18 is connected to the water tank 15
is attached to the bottom of the. The connecting waterway 16 communicates with the drainage channel 11 via the drainage valve 10.

Therefore, when the connecting valve 17 and the drain valve 10 are opened at the same time, the liquid in the water tank 15 is also drained via the connecting channel 16, the drain valve 10, and the drain channel 11. That is, the drain valve 10 and the connecting valve 17 serve as a valve device for draining the liquid in the water tank 15. When the connecting valve 17 is open and the drain valve 10 is closed, the washing tub 3 and the water tank 15 are communicated through the connecting waterway 16, and by rotating the pump 18 in the forward direction, the water in the washing tub 3 is drained into the water tank 15. By moving the washing tank 15 to the washing tub 3 (hereinafter referred to as liquid return) and rotating the pump 18 in the reverse direction, the water in the water tank 15 is moved to the washing tub 3 (hereinafter referred to as liquid return). A float switch 20 detects the presence or absence of water in the water tank 15. When the float switch 20 is closed, there is no water in the water tank 15, and when the float switch 20 is open, there is no water in the water tank 15. There is water.

21 is a control box, and its front panel has various operation buttons as shown in FIG. Reference numeral 22 denotes a power switch, and when this is turned on, the microcomputer 23 of the control circuit section starts operating. FIG. 3 shows a control block diagram showing the connection relationship between the microcomputer 23 and each input/output device. 24 is a water level switching knob for setting the water level to switch the water level of the washing tub 3 to high, medium, or low. It is linked with the liquid level switch 25 on the washing tub 3 side, and when the washing tub side has reached the set water level. The liquid level switch 25 is closed. 26 is the rinse selection knob,
When this knob is set to the water injection rinsing side, the rinse changeover switch 27 is closed and water injection rinsing is selectively executed.
28 to 33 are start switches that also serve as course selections, and there is one switch each for fully automatic course, semi-automatic course, wash only course, rinse dehydration course, spin dry only course, and push wash course.
When signals from these switches 28 to 33 are input to the macro computer 23, operation is started.
Here, each course other than the push-washing course is carried out within the range shown in the process chart of FIG. 33 is the start switch for the push washing course, and since the washing method is different from other courses, the other start switches 28 to 32 are
It is placed a little apart from the

34 is a reuse selector switch, and this switch is used to select between reuse of soap water, reuse of rinse water, no reuse, and drainage (water tank).

Here, the reuse of soap water means, as is clear from the process diagram in Figure 4, that after the washing process is completed, the above-mentioned "liquid transfer" is carried out, and the washing liquid is reused in the water storage tank.
What to store and reuse of rinse water
When the rinsing water is stored in the water storage tank 15 by performing the above-mentioned "liquid transfer" after the first rinsing process is completed, "no reuse" means that all the water in the washing tank 3 is drained without being transferred to the water storage tank. Drainage (of the water storage tank) is a course that is a feature of the present invention, and is one in which the drain valve 10 and the connecting valve 17 are opened, and the water supply valve 35 to the washing tank 3 is opened. . In the process diagram of Figure 4, the circle mark indicates the process to be executed, and the mark ◎ indicates the process to be executed only in the case of the careful course.

36 is a water supply port from which water is supplied to the washing tub 3 when the water supply valve 35 is opened, and an external hose is connected to this water supply port 36 when draining (water tank) is selected with the reuse selector switch 34. Wash the water tank 15.

37 is a right rotation drive circuit that rotates the drive motor 7 to the right, and 38 is a left rotation drive circuit that rotates the drive motor 7 to the left. During washing and rinsing, the microcomputer 23 alternately energizes the right rotation drive circuit 37 and the left rotation drive circuit 38. The rotary blade 6 is reversed, and during dewatering, the solenoid 12 and the right rotation drive circuit 37 are energized to perform the dewatering operation. 39 is a drive circuit for rotating the pump 18 in the forward direction, and 40 is a drive circuit for rotating the pump 18 in the reverse direction. Reference numeral 41 denotes a lid switch that opens when the upper lid 42 is opened, and also serves as a vibration detection switch during dehydration, and in this embodiment is also used to cancel drainage abnormalities. 43 is a buzzer.

The operation of this embodiment will be explained according to the flowcharts shown in FIGS. 5 to 14. Figures 5 to 7 are flowcharts showing the general outline of the software of this embodiment. Complicated parts in Figures 5 to 7 are shown in subroutine format in Figures 8 to 14. 8 to 14 will be described first.

FIG. 8 shows a flowchart of the above-mentioned "liquid return", in which the microcomputer 23 first determines whether or not there is water in the washing tub 3 based on the open/closed state of the liquid level switch 25, and then the liquid level switch 25 is activated. 25 is closed and there is water in the washing tub 3, the liquid is not returned and the process proceeds to the next step. If there is no water in the washing tub 3, it is determined based on the memory contents of the microcomputer 23 whether or not an abnormality has occurred in the pump 18, and if it has occurred, the liquid level switch 25 is turned on.
The water supply valve 35 is opened to supply water to the washing tub 3 until it closes.

Here, occurrence of abnormality in the pump 18 means that the pump 18
Specifically, when the pump 18 is not operating normally due to foreign matter being clogged in the pump 18, the pump 18 is rotated forward or backward to move the liquid or return the liquid for a predetermined period of time, 3 minutes in this embodiment. This refers to a case where there is no change in at least one of the liquid level switch 25, which is the water level detection means of the washing tub 3, or the float switch 20, which is the water level detection means of the water storage tank 15, even if the above steps are performed. In this case, the microcomputer 23 determines that there is an abnormality in the pump, stores this fact, and thereafter closes the connecting valve 17 to stop the pump 18.

If there is no problem with the pump, check water tank 1.
5 Check whether there is water in the float switch 20
If there is water in the water storage tank 15 (float switch 20 OFF), the connection valve 17 is opened and output is sent to the drive circuit 40 to pump the pump 1.
8 in the opposite direction to drain the water in the water tank 15 to the washing tank 3.
Move to. When there is no water in the water tank 15 (float switch 20 ON), the water supply valve 35 is opened until the liquid level switch 25 is closed to supply water to the washing tub 3.

When the liquid level switch 25 closes while the pump 18 is rotating in reverse, the connecting valve 17 is immediately closed, the pump 18 is stopped, and the liquid return is completed. Also, while the pump is rotating in reverse, the water in the water tank 15 runs out and the float switch 2
When 0 is closed, reverse rotation continues for 11 seconds from that point to complete the liquid return. This is because even if the float switch 20 is closed, there is still some water left in the water tank 15, and there is also water in the connecting waterway 1 other than the water tank.
Since there is water in the washing tub 6, the purpose is to return all of this water to the washing tub 3 to minimize waste of water. Also, at this point, the liquid level switch 25
If it is not closed, the water supply valve 35 is opened and water is supplied until it is closed.

If the liquid level switch 25 does not close even if the pump 18 continues to rotate in reverse for 3 minutes, or if the float switch 25 does not close, or if the float switch 20
If not closed, it is determined that there is an abnormality in the pump as described above, the connecting valve 17 is closed, and the pump 18 is stopped. The microcomputer 23 then stores the pump abnormality and does not operate the pump 18 in future operations.

FIG. 9 shows a flowchart of the above-mentioned "liquid movement".The microcomputer 23 first determines whether or not the liquid movement occurs after the occurrence of a pump abnormality based on the stored contents. Drain the water and do not move the liquid. If there is no abnormality in the pump, the microcomputer 23 determines whether there is water in the water tank 15 based on the open/closed state of the float switch 20, and
If there is water inside (float switch 20 OFF)
The water in the washing tub 3 is drained without moving the liquid. This is because if there is dirty water in the water tank 15 and the liquid is moved from the washing tank 3, the moved liquid may become dirty and cannot be reused. This is to prevent water from overflowing from the upper end of the water tank 15 if the liquid moves to the upper end of the tank.

If there is no water in the water storage tank 15 (float switch 20 ON), the presence or absence of water in the washing tub 3 is determined, and if there is no water (liquid level switch 25 OFF), the liquid is not moved and the process proceeds to the next process. When there is water (liquid level switch 25 ON), open the connection valve 17 and
After a few seconds, an output is sent to the drive circuit 39 to rotate the pump 18 in the forward direction, and the water in the washing tub 3 is transferred to the water storage tank 15. 10 seconds later means that the connecting waterway 1
This time is provided to expel the air in the pump 6 and the pump 18 by the water transferred from the washing tub 3, to allow the pump 18 to operate normally when it is rotating, and to suppress foaming caused by the air.

If the liquid level switch 25 does not open even after the pump 18 is rotated forward for 3 minutes, it is determined that there is an abnormality in the pump, and the microcomputer 23 stores this. After the pump abnormality occurs, the connecting valve 17 is closed, the pump 18 is stopped, and the water in the washing tub 3 is drained by opening the drain valve 10. Pump 18 does not operate thereafter.

When performing liquid transfer after the second rinse step,
In other words, when moving the rinse water to the water storage tank 15, if the rinse switching knob 26 is set to the water pouring rinse side, or if there is a memory that the water pouring rinse was performed during the second rinse, (this is the water pouring rinse). Even if the water injection rinsing is completed, there is a possibility that the rinse switching knob 26 is set to the rinsing side after the water injection rinsing is completed. ) Perform the following actions. After the liquid level switch 25 opens the connection valve 17
When the valve is opened within 55 seconds, the pump 18 rotates in the forward direction until 55 seconds have elapsed, and the connecting valve 17 is kept open. When the liquid level switch 25 opens after 55 seconds, the pump 18 is stopped and the connecting valve 17 is opened.
Close. In either case, the connection valve 1 remains closed until 1 minute and 10 seconds have passed from the time when the liquid level switch 25 was opened.
7 is closed to keep the pump 18 stopped.

For normal liquid movement other than the above, use the liquid level switch 25.
15 seconds after opening, the connecting valve 17 is closed, the pump 18 is stopped, and this state is maintained for 45 seconds, and then the connecting valve 17 is opened for 10 seconds, and the pump 18 is stopped.
Rotate clockwise to drain the water seeping out from the clothes into water tank 1.
Send to 5. In other words, even if there is no liquid in the washing tub 3 (outer tub 2), the clothes still contain the liquid, so the liquid seeps out of the clothes for 45 seconds and is sent to the water tank 15 again. That's what I was trying to use.

In addition, in the case where water injection rinsing is performed in the second rinse, there is a lot of water in the washing tub 3 due to water injection rinsing, and if all of it is transferred to the water storage tank 15, the water storage tank 15 will not overflow. Because it can be considered,
After 55 seconds have elapsed since the connecting valve 17 was opened, the connecting valve 17 is closed and the pump 18 is stopped.

Next, a tank cleaning process for automatically cleaning the inside of the water storage tank 15 will be explained based on the flowchart of FIG. 10. For tank cleaning, the microcomputer 23 first determines based on the stored contents whether or not the pump abnormality has occurred, and if the pump abnormality has occurred, the tank cleaning is not performed and the process proceeds to the next step. If no pump abnormality has occurred, the connection valve 17 is opened after confirming with the float switch 20 and liquid level switch 25 that there is no water in the water tank 15 and that there is water in the washing tub 3. When the connecting valve 17 is opened, water moves from the washing tub 3 to the water storage tank 15 side, and as explained in the above-mentioned liquid movement, first, the air in the connecting waterway 16 and the pump 18 is expelled, and then the connecting valve 1
7, the output is output to the drive circuit 39 to rotate the pump 18 in the forward direction and at the same time open the drain valve 10. The water transferred to the water tank 15 is stirred by the forward rotation of the pump 18 to wash away dirt adhering to the water tank wall. Pump 18 is driven until level switch 25 is opened. Unlike liquid movement, the drain valve 10 is open, so the water in the water tank 15 is drained from the pump 1.
8 is stopped, the water is drained through the connecting waterway 16 and the drain valve 10. This operation automatically cleans the inside of the water tank 15 (particularly the lower part), the connecting waterway 16, and the pump 18.

If the liquid level switch 25 does not open even after the pump 18 continues to rotate in the normal direction for three minutes, the microcomputer 23 determines that something is wrong with the pump and stops the pump 18. During the draining process and dewatering process after tank cleaning, the connecting valve 17 is kept open as described later, so that the water that has dissolved dirt in the water tank 15 is drained into the water tank during draining and dewatering. will not remain.

Next, the drainage process will be explained based on FIG.
In the draining process, if the microcomputer 23 remembers that it is after the tank cleaning process, the connecting valve 17 is opened at the same time as the drain valve 10 is opened, and the water tank 15 is also drained. Drainage is continued until 1 minute and 15 seconds have passed after the liquid level switch 25 opens, but if the liquid level switch 25 does not open even after 2 minutes and 30 seconds of draining, the microcomputer 23 determines that there is a drainage abnormality. , closes the connecting valve 17 and the drain valve 10, and stores this fact. The drainage abnormality is erased from the memory of the microcomputer 23 by opening the upper lid 42 and once opening the lid switch 41, and when the lid switch 41 is further closed, the drainage is restarted again.

Here, the meaning of clearing the memory of drainage abnormality by opening the upper lid 42 is as follows. The first action that the user usually takes is to open the top cover 42 to take out the laundry assuming that the washing is complete, but at this time the operation is interrupted due to water in the washing tub 3. If you notice that there is something wrong with the drainage, and the cause is, for example, that you forgot to turn down the drain hose, you can immediately restart operation by turning down the drain hose and closing the top cover 42. In the dewatering process shown in FIG. 12, if the microcomputer 23 remembers that the tank cleaning process has been performed, the connecting valve 17 is opened during the dewatering operation to drain the remaining water in the water tank 15. do. In the dewatering operation, first, it is determined whether the upper lid 42 is closed or not by checking the open/closed state of the lid switch 41. Only when the lid is closed (lid switch 41 ON), the drain valve operating solenoid 12 is operated to close the drain valve 10. is opened, the brake is released, and the clutch is switched to dewatering mode, and the clockwise rotation drive circuit 37 is energized to start the motor 7.
to rotate the washing tub 3. Motor 7 will stop rotating when the remaining operating time for dewatering reaches 30 seconds.
The noise generated when the solenoid 12 is cut off and the brake is applied is suppressed. The reset dewatering process shown in FIG. 13 is a combination of the above-mentioned draining process and dehydrating process, and the dewatering operation starts when the liquid level switch 25 is opened (reset).

The reversal in FIG. 14 is that in the push washing course selected by the course selection/start switch 33, the drive circuit 37 is first energized for 1.2 seconds to rotate the motor 7, that is, the rotary blade 6 clockwise, and after stopping for 0.7 seconds, the drive circuit 3
After energizing motor 8 for 1.2 seconds and rotating motor 7 to the left, 6.9
Basically, the cycle of stopping for seconds is repeated six times. For other courses selected with course selection/start switches 28 to 32, 0.7
The drive circuits 37 and 38 are energized for 1.2 seconds each with a pause of 2 seconds in between, and the motor 7 is reversed. Although not shown in the flowchart, if the rinse switching knob 26 is set to the water injection rinsing side during the rinsing process, the water supply valve 35 is opened simultaneously with the reversal to perform water injection rinsing.

Next, according to the flowcharts in Figures 5 to 7,
The overall operation of the washing machine with water tank of this embodiment will be explained. When the power switch 22 is turned on, the microcomputer 23 starts operating, resets the output terminal of the microcomputer, and then clears the internal data write memory (RAM) to an initial state. Course selection and start switch 28-3
When any one of 3 is input, a course corresponding to this input is set. If no new input is made to the course selection/start switches 28 to 33 within 3 seconds after that, driving will start on the set course, and no inputs to the start switches 28 to 33 will be accepted after that, and the course will not be changed. Not allowed.
If another start switch 28-33 is input within 3 seconds, a course based on this new start switch is set. If the same start switch 28 to 33 is pressed twice within 3 seconds, a careful course is selected, and the washing process time, rinsing process time, and spin-drying process time are set longer. In addition, the reuse selector switch 3
4 to the (water tank) drain position and press any of the start switches 28 to 33, the (water tank) drain course is set.

First, the (water tank) drainage course, which is a feature of the present invention, will be explained. This drainage course opens the connecting valve 17 and the drain valve 10, and when the upper lid 42 is open, the lid switch 41 is open, and the liquid level switch 25 is open (there is no water in the washing tub 3), the operation is started. After the start, the water supply valve 35 is opened for one minute, and water is supplied from the water supply port 36. If an external hose is connected to the water supply port 36 here, water can be guided to the water tank 15 side by this hose, and dirt in the water tank 15 that was not removed in the tank cleaning process described above can be easily cleaned. Since the connection valve 17 and the drain valve 10 are open, the water introduced into the water storage tank 15 is immediately discharged. Of course, the interior of the washing tub 3 can also be easily cleaned using this hose.

The reason why the water supply valve 35 is opened only when the liquid level switch 25 is open is because there is liquid in the washing tub 3, and if you forget to turn down the drain hose and water is supplied from the water supply port 36, the water will be drained. This is a safety measure as there may be overflowing.

Further, if the upper lid 42 is closed and the lid switch 41 is closed, the water supply valve 35 will not open, so that only the water tank 15 and the washing tub 3 can be drained.

The connecting valve 17 and the drain valve 10 are closed after 3 minutes, and the buzzer 43 (water tank) is sounded to notify the end of the drain course.

Next, since the push washing course is special, we will explain other normal washing courses (fully automatic course, semi-automatic course, wash only course, rinse dehydration course, dehydration only course).

First, it is determined whether the set course is a rinse dehydration course or a dehydration only course, and if it is a dehydration only course, the process proceeds to the final dehydration shown in FIG. If neither course is selected, the liquid return process shown in FIG. 8 is performed, and if there is water in the water tank 15, it is transferred to the washing tank 3. When the liquid level switch 25 closes, it is determined whether it is a careful course or a standard course.
Perform the washing process by inverting as shown in Figure 14 for 10 minutes. That is, the rotary blade 6 is rotated left and right for 1.2 seconds each with a 0.7 second stop.

When the reuse switch 34 is set to the soap water reuse position after the washing process ends or at the start of the rinse dehydration course, the liquid movement shown in FIG. 9 is carried out to move the water to the water storage tank 15 side. In the case of a simple washing course, after the washing process is executed, the buzzer 43 sounds to notify the end of the washing process.

If the reuse switch 34 is in the soap water reuse position at the end of the wash only course, after the liquid is transferred, the process proceeds to the dewatering process shown in Figure 12 for 1 minute and 30 seconds, and then the operation ends. This allows the laundry to be taken out in a dehydrated state,
I never get my hands wet. Then, another laundry item is put into the washing tub and the soapy water transferred to the water storage tank 15 is returned to the liquid state so that it can be reused and washed.
If you are using only the wash cycle, the operation will be stopped with the liquid remaining in the washing tub as described above.
Although your hands will get wet when you take out the laundry inside, there is no liquid movement or liquid return, so the time can be shortened accordingly.

In cases other than the above, after washing is completed, drain water as shown in Figure 11 and dehydrate as shown in Figure 12 for 1 minute and 30 seconds, then proceed to the first rinsing step. Here, when you start draining water tank 1
If there is water in 5 (float switch 20 OFF)
During the draining and dewatering, the connecting valve 17 is also opened to drain the water in the water tank 15.

The first rinse is performed by performing the reversal shown in FIG. 14 for 2 minutes after water is supplied, and after the completion of the first rinse, when the reuse selector switch 34 is in the rinse water reuse position in a mode other than the rinse dehydration course. The tank cleaning described in FIG. 10 is carried out to clean the water storage tank 15.

What this means is that when rinsing water is reused, the water in the washing tub at the end of the second rinsing process is transferred and stored in the water tank, but at the end of the first rinsing process The water in the washing tank is not simply drained, but is used for washing the tank to clean the water tank as much as possible so that the water from the second rinse cycle that should be stored does not get dirty in the tank. It is.

The reason why tank cleaning is not performed in the rinse-dewatering course is that drainage abnormalities, such as the drain hose not being turned down, may not be discovered if tank cleaning is performed.

In other words, the rinsing and dewatering course is to execute the range shown in the process diagram in Figure 4, but if there is already no liquid in the washing tub 3 at the start of execution, the process will be executed during the draining and spin-drying during the first rinsing process. No abnormality in drainage could be found, and furthermore, even if the tank was cleaned after the first rinse, no abnormality in drainage could be found. (When cleaning the tank, the pump 18 forcibly transfers the liquid from the washing tank to the water tank, so the liquid level switch 25
At that point, proceed to reset dehydration. In other words, the washing tub simply rotates with water separated into the washing tub and water tank. ) If the second rinse is performed by pouring water in this state, water may overflow from the washing tub 3. Therefore, in the case of the rinsing dehydration course, the tank is not cleaned and the process proceeds to the reset dehydration for 2 minutes shown in FIG. 13, so that any abnormalities in the drainage can be detected. This two minutes is the time after the liquid level switch 25 is opened (reset).

Next, water is supplied and the process proceeds to the second rinse. For this rinsing, the above-mentioned inversion is performed for 3 minutes in the careful course and 2 minutes in the standard course.

When the second rinsing process is completed, as shown in the flowchart of Fig. 7, in the case of the semi-automatic course, water is stored in the washing tub 3 and the operation is terminated, and the microcomputer 23 if it remembers that there is something wrong with the pump. This will be notified, and if there is no such notification, the buzzer 43 will sound to notify the end and then return to the initial state. The buzzer in the event of a pump abnormality sounds intermittently for 10 seconds at a shorter frequency than the buzzer in the event of a course completion, and after 10 seconds, an indicator lamp (not shown) continues to flash.

If it is not a semi-automatic course but a fully automatic course or a dehydration only course, proceed to the final dehydration process. This dehydration is reset dehydration, but before performing this reset dehydration, if the reuse selector switch 34 is set to the rinse water reuse position, the liquid is transferred and the rinse water in the washing tub 3 is is transferred to water tank 15.

On the other hand, when the reuse selector switch 34 is in the no-reuse position (the flowchart indicates that neither rinse water nor soap water is reused), tank cleaning is performed. When the above-mentioned reuse switch 34 is in the rinse water reuse position, the liquid in the washing tank is not simply drained, as in the tank cleaning performed after the first rinse cycle. , water storage tank 15 can be used for tank cleaning
This is done to remove dirt from the pipes and the connecting waterway 16. The water after the final rinsing process is used here because this is the cleanest water.

The final reset dehydration time is 5 minutes 30 seconds for the careful course and 3 minutes 30 seconds for the standard course. When the operation is finished, the microcomputer 23 notifies the pump if there is any abnormality in the memory of the pump, and if not, sounds the buzzer 43 to notify the end and then returns to the initial state. The above is the case of a normal washing cycle.

The special wash cycle, the push wash cycle, is used to wash delicate fabrics such as sweaters and blankets.

(F) Effects of the Invention According to the washing machine with a water storage tank of the present invention, there is provided a valve device for draining the liquid in the water storage tank, a water supply valve, and an external hose that supplies water from the water supply valve into the washing tank. Since the valve device and the water supply valve are both open for a predetermined period of time, that is, the (water tank) drainage course is provided, the above process can be performed with the external hose connected to the water supply port. By doing this, you can use an external hose to lead water to the water tank to clean the water tank, or you can clean the washing tank by disconnecting the water supply hose from the washing machine or by connecting it to another water faucet far away. It can be easily cleaned at any time without introducing water.

In the above process, the water supply valve opens only when the top cover is opened, so if the top cover is closed and the above process is executed, only the water tank can be drained, and a separate process for draining only is provided. Never.

[Brief explanation of drawings]

The drawings show a washing machine with a water storage tank according to the present invention, in which Fig. 1 is a front longitudinal sectional view of the whole, Fig. 2 is a front view of the front panel of the control box, Fig. 3 is a block diagram of the control circuit, and Fig. 4 is a front longitudinal sectional view of the washing machine. The process diagrams, Figures 5 to 14 are flowcharts showing the flow of operations, and Figures 5 to 7 are flowcharts showing the flow of operations.
The figure shows the general flow, and FIGS. 8 to 14 show the detailed flow. 3...Washing tank, 15...Water tank, 10...Drain valve, 1
7... Connection valve (10, 17... constitutes a valve device),
35... Water supply valve, 36... Water supply port.

Claims (1)

[Claims] 1. A washing tank, a water storage tank for storing liquid in the tank for reuse, a valve device for draining the liquid in the water tank, a water supply valve, and a water supply valve that drains water from the water supply valve into the washing tank. The microcomputer is equipped with a water supply port to which an external hose can be connected as well as a water supply port to which an external hose can be connected, a group of input switches for inputting various washing operation states, and a microcomputer that controls the operation of loads such as the valve device and water supply valve. A washing machine with a water storage tank, characterized in that a computer instructs both the valve device and the water supply valve to be opened for a predetermined time in response to a predetermined switch input of the input switch group.