JPS644797B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a washing machine incorporating a microcomputer, which allows advanced control to be performed easily.

The most common fully automatic washing machines at present are programmed by a group of cam switches and operate according to those programs, making it difficult to reprogram them. It was difficult to do.

The present invention has succeeded in making it possible to arbitrarily set the washing time, spin-drying time, number of rinses, etc. by incorporating a macro computer into the washing machine, and to perform the washing most suitable for the type of laundry.

The present invention will be explained below with reference to the drawings. Reference numeral 1 denotes a door for loading and unloading laundry, and when the door is closed and a handle 2 is locked, a door switch 3 is closed. Reference numeral 4 denotes a control panel, which includes a display device 5 as shown in FIG. 4, a keyboard switch 6 as shown in FIG. 5, and various switches 20 as shown in FIG. When the main switch 8 is turned on, the power transformer 9 is energized, voltage is applied to each part through the power circuit 10, and operation begins. The macro computer 11 starts operating from a specific address in a read-only memory (hereinafter referred to as ROM) 13 by the action of an initial circuit 12 . 14 is a read driver from the ROM 13, and output ports C and D of the macro computer 11 are a fluorescent display tube 15 and a light emitting diode 1.
A segment signal is supplied to 6. The necessary numbers are displayed by combining segment signals. In addition, output ports E and I are connected to driver circuit 1.
Power is supplied to the display tube 15 through the driver circuit 18 to display the time, water temperature, etc. on the display tube in cooperation with the segment signals, and power is supplied to the light emitting diode 16 through the driver circuit 18 to display this information in cooperation with the segment signals. Light-emitting diodes light up to display the washing cycle. Also, this output port E, I
The signals output from the keyboard switch 6, various manual switches 20, and the temperature measuring circuit 21 are scanned. Further, A is an input port for reading a signal from the keyboard switch 6, and B is a temperature measurement circuit 2.
1 and various switches 20, and the signal output from the timer circuit 22 is sent to the gate circuit 2.
This is an input port for reading through 3. H is an output port, and its signal is decoded by the decoding circuit 25 and transmitted to the output circuit 24. F is also an output port, and its signal is directly transmitted to the output circuit 24. 26 is a buzzer circuit that sounds when an abnormality occurs. 27 is another buzzer circuit which sounds when the keyboard switch 6 is operated and when the operation is completed. The shaping circuit 19 receives a commercial frequency time base signal (TB signal) transmitted from the power transformer 9.
The signal is shaped into a waveform and transmitted to the microcomputer 11, and the microcomputer counts the washing time and dehydration time based on this signal.
The LC circuit 28 is used as a clock generating circuit for advancing the program within the microcomputer 11.

30 is a washing motor and an electromagnetic contactor (MS-1)
When the contacts 33, 34, 35 of the electromagnetic contactor (MS-2) 31 close, the motor rotates clockwise, and when the contacts 36, 37, 38 of the electromagnetic contactor (MS-2) 32 close, the motor rotates counterclockwise. That is, by alternately bringing the contacts 33-35 and 36-38 into contact, the washing motor 30 performs a reverse operation. At this time, the washing motor 30 rotates as a four-pole motor. Furthermore, when the electromagnetic contactor (MS-3) 39 is operated, the contacts 40, 41, 42 close and current is supplied from there, and the contacts 46, 47 open and 43, 44, 45 close, so that the washing motor 30
rotates with two poles and is used during the balance stroke.

The dehydration motor 49 has an electromagnetic contactor (MS-4) 5
When the zero contacts 51, 52, and 53 are closed and current is supplied from them, it becomes four poles and is used for medium-speed dewatering. Further, the contacts 51, 52, 53 are opened,
Contacts 54, 55 of electromagnetic contactor (MS-5) 60,
When 56 is closed, current is supplied from there, and when contacts 57, 58, and 59 are closed, it becomes two poles and is used for high-speed dehydration. In addition, in this embodiment, a steam valve 63 for heating washing water, a gluing valve 64 for gluing, a detergent valve 65 for dissolving detergent, a hot water valve 66 for supplying hot water, and a hot water valve 66 for supplying cold water. A cold water valve 67, a drain valve 68, and a torque motor 69 are provided for operating a clutch for transmitting power from the washing motor 30 and dewatering motor 49 to the washing drum.

FIG. 3 shows the components of the microcomputer 11. Input signals from the keyboard switch 6 and the temperature measurement circuit 21, or input signals from various manual switches 20 for water supply, drainage, etc., are stored in a data writing memory (RAM) 70 through an input control section 71. The program counter 72 is a counter for specifying an address where a program is stored and sequentially executing the program. The calculation unit 73 compares data stored in the RAM 70 and performs calculations such as addition and subtraction. The control section 74 controls the operation of each section within the microcomputer. Output control section 75
is a circuit that controls output signals to the display device 5 consisting of the fluorescent display tube 15 and the light emitting diode 16, and the output circuit 24. Note that standard washing courses are stored in the ROM 13 in advance.

FIG. 4 is a detailed view of the display device 5, in which the fluorescent display tube 1
5 is configured so that the upper two digits digitally display the water temperature and the lower two digits digitally display the time. The light emitting diodes 76 to 81 display the process of washing, rinsing, etc.
The remaining light emitting diodes 82, 83 and 84 indicate the special cycle of washing. When the main switch 8 is turned on, the light emitting diodes 76, 77, 78, 79, 81
lights up to display the standard washing cycle. In the standard course, the water temperature is 60℃, the washing time is 20 minutes on high rotation, the rinsing is 3 times on high rotation, and the spin time is 7 minutes on high speed. The water temperature and time can be changed freely by operating the numeric keys, and the fluorescent display tube shows the set water temperature and time each time the key is operated.

FIG. 5 is a switch layout diagram of the keyboard switch 6. There are 4 function keys for setting washing time, spin-drying time, water temperature and number of rinses, a key for selecting special washing such as gluing, medium-speed spin, and gentle rotation, and a key for commanding drum rotation during manual operation. It consists of a key, a key to command spin-driving operation, a correction key to return the washing course to the standard course, a stop key, a start key, and 10 number keys.

FIG. 6 is a matrix diagram of the keyboard switch 6.

FIG. 7 is a layout diagram of various switches 20. The main switch 8 turns on and off the power to the control circuit. The manual/automatic changeover switch 85 is a switch for changing the operation of the washing machine between fully automatic mode and manual operation.When set to the manual mode, press the drum rotation key or dehydration key of the keyboard switch 6. For example, only the washing process or only the dehydration process is performed. The switches 86 to 90 are for manually operating the steam valve 63, water supply valve 67, drain valve 68, detergent injection valve 65, and gluing valve 64, respectively. It's starting to work even when I'm on it.

Next, the operation of this embodiment will be explained. Connect power lines 91, 92, and 93 to a three-phase power source. The surge included in the power supply voltage is removed by the varistors 94, 9.
5 and 96, and when the main switch 8 is turned on, the voltage that does not include the surge voltage is supplied through the power transformer 9, and the power supply circuit 10 receives -5 (V) and 96, respectively.
-8 (V), -10 (V), -30 (V) constant DC voltage, 2.5 (V) AC voltage for fluorescent display tube 15, time base signal for time counting ( T.B.
signal) is generated. Microcomputer 11
Due to the function of the initial circuit 12, ROM1
Operation will start from the specific address 3. The microcomputer 11 first checks the state of the automatic-manual changeover switch 85 among the various keys 20. Suppose you are now on the automatic side. Next, check the 50Hz and 60Hz changeover switch 97. 60 if the switch is open
For Hz, if closed it is for 50Hz. Let's say it's now set to 60Hz. Next, turn the steam-hot water selector switch 9.
Check the status of 8. If it is open, it is for steam;
Steam will be used to heat the wash water. Suppose it is now used for steam. These status signals are sent to the microcomputer 11 through input port B.
and is stored in the corresponding location of the RAM 70 through the input control section 71. Next, the microcomputer 11 transfers the standard washing course previously stored in the ROM 13 to the RAM 70. In this example, the standard course is 20 minutes of washing, 3 rinses,
Dehydrated for 10 minutes, water temperature 60℃.

To set a course other than the standard course, use the keyboard switch 6. For example, if you want to change the washing time to 15 minutes, press the function keys related to the washing time - □1 - □5 - and the numeric keys of the related numbers directly in sequence. By directly operating these keys, "15" is displayed in the last two digits of the fluorescent display tube 15. This time is 0-99
You can freely set it within minutes.

If you want to set the number of rinses to 2 times, for example,
Number of rinses - □2, operate the key directly.
When set to twice, the light emitting diode 79 goes out and only 77 and 78 continue to light up. In addition, in the case of the number of rinses, even if a number key of "4" or higher is pressed, the rinse will only be performed three times.

The same applies to the dehydration time, and by directly operating the dehydration time -□8 key, it is set to 8 minutes, and the ``15'' on the display tube 15 disappears and ``8'' is displayed.

Also, if you directly operate the water temperature -□4-□0, the water temperature during washing and the first rinse will be set to 40°C, and "40" will be displayed in the first two digits of the fluorescent display tube 15. Ru. This temperature can be freely set within the range of 0 to 99°C.

In this way, by directly operating the function keys and numeric keys, or by operating the special washing keys, the RAM70
You can change the contents of the standard washing course, but if you directly operate the start key without operating these keys, the washing machine will run according to the standard washing course. The standard washing course will be explained below. When the start key is operated, the detergent valve 65 is opened to introduce detergent and water into the washing drum. At the same time, the torque motor 69 rotates and the clutch operates to transmit the rotational force of the washing motor 30 to the drum, causing the drum to operate in reverse. When the low water level switch 99 is activated, the detergent valve 65 is closed. The water level is low. At the same time, the fluorescent display tube 15 displays the washing time "20" and the water temperature.
The water temperature is determined by a thermistor 100 installed in the washing drum.
The temperature measuring circuit 21 converts the resistance change into a digital quantity, sends it to the microcomputer 11 from the input port B, stores it in the RAM 70, compares it with a set temperature, and displays it on the fluorescent display tube 15.

When the water supply is completed, the steam valve 63 is opened and heating begins. When the water temperature becomes higher than the set temperature, the steam valve 63 is closed and the washing time starts counting. That is, the microcomputer 11 counts the power frequency of 50 Hz or 60 Hz from the shaping circuit 19 and performs a clock operation. The washing time is sequentially subtracted from the set time every minute, and the remaining time is displayed on the fluorescent tube 15. During this time, the washing motor 30 rotates clockwise 12
Repeat the strong reversal of seconds - pause 2 seconds - counterclockwise rotation 12 seconds. Also, the water temperature Ta is measured every second and compared with the set temperature Ts, and if it becomes 4°C lower than the set temperature Ts, steam is mixed in again to heat it, and if it becomes higher than the set temperature Ts, heating is stopped. As a safety operation, if the water temperature Ta continues to be 10°C or more higher than the set temperature Ts for 5 seconds, the buzzer circuit 19 issues an alarm and the operation is stopped at the same time. When the washing time reaches the operating time Qo, the process moves to the draining process, and the drain valve 68
is activated. When the drain time Q1 has elapsed, the washing motor 30 is switched to two poles by the electromagnetic contactor MS-337. Enter the balance process. The balance time Q2 can be freely set using the volume 101 of the timer circuit 22. The timer circuit 22 starts clock operation after the transistor 102 is turned off by the output from the output port H of the microcomputer 11, and the capacitor 10
The charge stored in the capacitor 4 is discharged from the resistor 103, and the capacitor voltage is compared with the voltage of the volume 101 by the comparator 105. When the voltage of the volume becomes higher, the output T3 changes from low to high. It is measured by entering the microcomputer 11 from the input port B through the gate 106.

After the balance time Q2 has passed, medium-speed dehydration begins. For medium-speed dewatering, the torque motor 69 is off and the electromagnetic contactor
By operating the MS-450, the dewatering motor 49 is operated with four poles. At this time, vibration switch 1
Check 07, and if it is working, the vibration is large, so try again from balance operation. When medium speed time Q3, for example 2 minutes, has elapsed, check to see if there is rinse 1, and if not, jump to and proceed to final dehydration. In the case of the standard course, there is a rinse 1, so the cold water valve 67 opens and water supply starts. At the same time, the torque motor 69 and the washing motor 30
works. Then, when the water level switch 99 is activated, the cold water valve 67 is closed, the steam valve 63 is opened and heating is started, and when the water temperature Ta reaches the set value Ts, clock operation is started. At this time, as well as when washing, the water temperature
When Ta becomes 4°C lower than the set temperature Ts, heating starts again. Also, for a certain period of time (5 seconds) than the set temperature.
The same goes for stopping operation and issuing a warning if the temperature rises by 10 degrees Celsius or more.

When the rinsing time Q3, for example 3 minutes, has elapsed, the process moves from balance to medium-speed dehydration to rinsing 2.
Check the operation of the high water level switch 108 during the rinse 2 process. As a result, the water level is supplied to a higher water level than during washing and rinsing 1. Rinse 2 has no heating operation. Go through the same process as Rinse 2 → Drain → Balance → Medium Speed Dehydration and move on to Rinse 3. Rinse 3
Then, the water level will still be supplied to the high water level. Similarly, rinse 3 is also not heated. When rinsing 3 is completed, if the gluing key of the special washing key has been pressed, the process moves to the gluing step.

In the gluing process, water is first supplied to a low water level by the cold water valve 67. Here, the buzzer 27 sounds for a predetermined time. The buzzer time is, for example, 10 seconds. Thereafter, the gluing valve 64 is opened and the glue enters the washing drum and gluing is performed. The gluing time Q5 is, for example, 5 minutes. After gluing, proceed to drain → balance → medium-speed dewatering, and then move on to the final high-speed dewatering.

In high-speed dehydration, the dehydration motor 49 operates in two poles during the set time Q6. This is a magnetic contactor
This is done by operating MS-554. After the high-speed dehydration ends, the buzzer 27 sounds to notify the end. After finishing, press the start key again to restart the operation under the same conditions as previously set. In other words, the memory in the RAM 70 is not erased. Also, if you press the weak inversion key among the special washing keys during setting, the light emitting diode 83 will light up, and the inversion time of the washing motor 30 during the washing, rinsing 1, 2, 3 and gluing processes will change from clockwise rotation for 3 seconds to pause. Repeat for 7 seconds → counterclockwise rotation for 3 seconds. If the medium-speed dehydration key is pressed, the light emitting diode 84 lights up, and the final high-speed dehydration becomes medium-speed dehydration and is operated for the set time. Although not shown, if the temperature inside the washing drum exceeds 100° C. during operation, a warning is issued with the buzzer 26 and the operation is stopped. Also, while heating, a warning is issued when the set temperature +10℃,
For example, if the set temperature is 40℃ or less,
Even if the temperature rises by 10℃ or more, there is no particular danger, so it is possible to not issue a warning.

Furthermore, when the steam/hot water selector switch 98 is set to the hot water side, the hot water valve 66 and the cold water valve 67 are activated during water supply, as shown in FIG. 9, instead of heating the water after supplying it as in the case of steam. be controlled. For example, the hot water valve 66 is kept open, and when the water temperature is higher than a set value, the cold water valve 67 is opened to reach the set temperature. Rinsing is similarly controlled.

Next, the operation when the automatic-manual changeover switch 85 is set to manual will be explained. In the case of manual mode, among the keyboard switches 6, press the drum key,
Only the dehydration key and number keys can be operated. For example, if you operate the drum kini, then operate the number keys, and then operate the start key, the laundry will only be washed for the time set by the number keys. Also, if you operate the dehydration key, then operate the numeric keys and then operate the start key, dehydration will only be performed for the time set by the numeric keys. In this case, switching to higher speeds in the order of balance → medium-speed dehydration → high-speed dehydration is the same as in automatic operation.

As described above, the present invention is equipped with a keyboard switch including a function key for specifying a change, 10 numeric keys, and a start key, and by operating the start key without making a change operation, the most frequently used standard washing cycle can be selected. The washing machine can be operated according to the instructions on the machine, and various types of washing can be performed according to the type of laundry by changing operations using the number keys, etc. Furthermore, these operating operations can be performed centrally using a keyboard switch. . Furthermore, when changing the number of times of rinsing, even if a numerical operation is performed more than a predetermined number of times, the limit can be automatically set to a predetermined number of times. Therefore, it is possible to provide a fully automatic washing machine that is extremely easy to use and eliminates waste of time and water usage by performing a unified operation without erroneously setting the number of rinses.

[Brief explanation of drawings]

Fig. 1 is a front view of the fully automatic washing machine of the present invention, Fig. 2 is a circuit diagram showing the connection relationship between the microcomputer, operation keys, motor, etc., and Fig. 3 is a block diagram showing the information transmission relationship within the microcomputer. figure,
Figure 4 is a front view of the display device, Figure 5 is a front view of the keyboard switch, Figure 6 is a matrix of operation keys, Figure 7 is a front view of the manual switch, Figure 8a
-h is a flowchart for automatic operation, and Figure 9 is a flowchart for manual operation. 6...Keyboard switch, B...Function key, A...Numeric key, 13...Read-only memory,
70...Data write memory.

Claims (1)

[Claims] 1. A read-only memory that stores in advance a standard washing cycle having a predetermined number of rinsing cycles, and for arbitrarily changing the respective times of the washing cycle and dehydration cycle and the number of rinsing cycles in the standard washing cycle. a keyboard switch including 10 numeric keys, a function key for specifying changes, and a start key; and a keyboard switch for storing memory contents transferred from the read-only memory, the operation of the function keys and numeric keys When changing the number of rinses, the number of times of rinsing is stored by operating the number keys within the predetermined number of times, and the number of times of rinsing is stored by operating the number keys of the number of times greater than the predetermined number of times. A fully automatic washing machine comprising a data writing memory that stores a predetermined number of times when operated, and a control section that starts operation according to the data stored in the data writing memory by operating the start key.