JPH0557090A - Washing machine - Google Patents

Abstract

PURPOSE:To enable washing to be always finished at designated finish time by reading conditions of the previous washing from a storage means after the finish time is designated so as to compute the duration of washing, and finding the start time of washing from the designated finish time. CONSTITUTION:When finish time is designated a control portion 19 reads from a storage means 22 values detected during the previous washing by a water sensor 10, a temperature sensor 11, a load sensor 12 and a water level sensor 13 and the duration of washing is found by a wash time computing means 27 and the current time is subtracted from the designated time by a start time computing means 24 and also the duration of washing is compared with the remaining time and when the duration of washing is longer than the remaining time an error sign is displayed in a liquid crystal panel 16 to stop washing operation. When the duration of washing is shorter than the remaining time, the duration of washing is subtracted from the designated time to find the start time of washing and the washing machine is held in the awaiting state until a timer means 25 indicates the start time of washing. At the start time of washing, washing is started under washing conditions decided by a process decision means 21. Therefore, after washing is finished, the washing is not left and so does not wrinkle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine which automatically calculates a washing start time when a washing operation end time is reserved and starts the washing operation.

[0002]

2. Description of the Related Art Conventionally, a washing machine of this type is disclosed in Japanese Patent Laid-Open No. 1-22.
No. 74797. This product makes fuzzy inference based on the information obtained by the sensor that detects the state of laundry and the manual input, determines the washing conditions such as washing time and rinsing time, and based on the conditions, the load of the motor etc. To control the washing process.

[0003]

In the control as in the above-mentioned conventional example, the washing time does not change and is not determined depending on the atmospheric conditions such as the air temperature and the water temperature during operation. Could not be calculated. Then, washing because the time is not determined, while it is conceivable to reserve set the end time with a certain degree prospect, or have continued to be still washing operation is in that time, also was dehydrated too end early If so, the laundry may be wrinkled.

[0006] By the way, when a laundry is scheduled to be washed at a general home, the laundry is not specially washed such as washing with only one sweater. Since the laundry operation is set around this time so that the laundry is set and operated, and when the user wakes up in the morning, the laundry is simply dried, so the amount of laundry is relatively constant. Further, since the air temperature, the water temperature, etc. do not change so much between the day before and the day before, the washing process as obtained by the fuzzy inference of the conventional example executes almost the same operation contents as the previous day.

The present invention solves this problem based on the above.

[0006]

Means for Solving the Problems The means for solving the problems according to the present invention include a time measuring means for measuring time, a laundry amount,
A sensor for detecting a water temperature, a process deciding means for deciding the washing conditions of the process such as washing time and rinsing time based on the output of the sensor, and a control for executing the process for which the washing conditions are decided by the process deciding means Means, storage means for storing the output of the sensor, reservation means for arbitrarily setting the end time of the process executed by the control means, and the washing time by the output of the sensor stored in the storage means. Washing time calculation means for calculating, start time calculation means for calculating the washing start time based on the reservation end time set by the reservation means and the washing time calculated by the washing time calculation means, and the start time calculation means When the time measured by the time measuring means reaches the time calculated in step 1, the washing start means starts execution of the control means.

[0007]

That is, when the user reserves the end time by the reservation means, the washing time calculation means first calculates the previous washing time by the output of the previous sensor read from the storage means. Thereafter, the start time calculation means calculates the laundry start time from the laundry time and the reserved end time, and if it is determined by the laundry start means that the time counted by the time counting means has reached the laundry start time, the control is executed. The washing operation is started by the means. This washing operation starts with the sensor,
The water temperature or the like is detected, the process determining means determines the washing condition of the process based on the detected value, and the controlling device sequentially executes the process of the determined washing condition.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, 1 is a washing / dewatering motor (hereinafter referred to as a motor), 2 is a water supply solenoid for opening and closing a water supply valve, 3 is a drainage solenoid for opening and closing a drainage valve, and 4 and 5 are terminals of the motor 1. 6 connected in series to
Is a triac connected in series with the water supply solenoid 2, 7
Is a triac connected in series to the drain solenoid 3, 8
Is a commercial power source, and 9 is a triac drive circuit for driving the triacs 4, 5, 6, and 7. The motor 1 is
When the triac 4 is turned on, it rotates normally, and when the triac 5 is turned on, it rotates counterclockwise.

Reference numeral 10 is a water temperature sensor comprising a thermistor for detecting the temperature of the washing water in the washing tub, 11 is an air temperature sensor comprising a thermistor for detecting the temperature, and 12 is a weight of the laundry, for example, to measure the amount of the laundry. The load sensor for detecting 13 is a water level sensor for detecting the water level of the washing tub.

Reference numeral 14 denotes a key input circuit operated by the user, 1
5 is an LED group that lights up corresponding to the item selected at the time of setting the manual program, 16 is an indicator consisting of a liquid crystal panel for displaying an error display, the current time, or a reserved time, and 17 is a reserved operation Reserved LED indicating
Is. The key input circuit 14, the LED group 15, the display 16, and the reservation LED 17 are arranged on the operation panel 18 provided in the washing machine as shown in FIG. Further, the key input circuit 14 includes a start key 14a for starting a washing operation, a time setting key 14b which is pressed to set the current time, and a reservation key 14 which is pressed to reserve the end time.
c, a time setting key 14d for setting the time, and a minute setting key 14e for setting the minute.

Reference numeral 19 is a control section for controlling the washing operation of the washing machine, and 20 is a power supply circuit for stepping down the commercial power supply 8 to supply DC power to the control section. The control unit 19 performs a fuzzy inference based on the detection values of the water, air temperature sensors 10, 11, the load sensor 12, or the water level sensor 13 to determine the washing process conditions such as washing time and rinsing time. 21, the sensors 10, 11, 12, 13
Storage means 22 for storing the detected value of or the end time reserved by the operation of the reservation key 14c, the process determining means 21
The control means 23 for sequentially executing the process determined in 1., the start time calculation means 24 for calculating the washing start time based on the reserved end time and the washing time T1, the time counting means 25 for counting the current time, the start time When it is judged that the time of the time counting means 25 has reached the washing start time calculated by the calculation means 24, the washing start means 2 for starting the execution of the control means 23
6. Washing time calculation means 2 for calculating the washing time based on the detection values of the sensors 10, 11, 12, 13 stored in the storage means 22 when the start key 14a is operated
It is composed of 7.

In such a washing machine, when the start key 14a is normally pressed without operating any key of the operation panel 18, the amount of laundry, the temperature, Detects the temperature of washing water,
Based on this detected value, the process determining means 21 of the control unit 19 performs fuzzy inference to determine the operating conditions of washing, rinsing, and dehydration. Then, the control means 23 sequentially operates the motor 1, the water supply solenoid 2, and the drainage solenoid 3 via the triac drive circuit 9 based on the determined operation condition to execute washing. After that, when the dehydration operation ends, the washing operation automatically ends, and the process waits until the next instruction is given.

In the method of reserving the laundry end time, first, the time setting key 14b is pressed to adjust the current time. After that, the current time is set by the time setting key 14d and the minute setting key 14e, and the time setting key 14b is pressed again to start the operation of the time measuring means 25. Next, after pressing the reservation key 14c to reserve the end time, the end time is input by the time setting key 14d and the minute setting key 14e, and the end time is set by pressing the reservation key 14c again. At this time, the reservation LED 17 is turned on to display that the reservation operation at the end time is in progress. This completes the reservation operation for the end time.

Next, the operation of the reserved driving will be described with reference to FIG. After the end time reservation operation, the user presses the start key 14a (S-1) to start the reservation operation. At this time, the control unit 19 reads the detection value of each sensor 10, 11, 12, 13 from the storage unit 22 at the time of the previous washing, and the washing time calculation unit 27 calculates the washing time T1 based on the detection value (S). -2). Furthermore, the control unit 1
9, the start time calculating means 24 subtracts the present time from the reserved time to obtain the remaining time T2 (S-3), and compares the washing time T1 and the remaining time T2 (S-
4) If the washing time T1 is large, the remaining time T2 from the present time to the reservation end time is shorter than the washing time T1, so it is determined that the washing operation cannot be ended at the reservation end time,
An error message is displayed on the liquid crystal panel 16 (S-5), and the washing operation is stopped. If the washing time T1 is shorter than the remaining time T2, the washing time T1 is subtracted from the reserved time to obtain the washing start time T3 (S-6). After that, the timing means 2
It becomes a standby state until 5 measures the washing start time T3 (S-7).

When the time counting means 25 counts the washing start time T3, the washing starting means 26 starts the operation of the control means 23, and the motor 1, the water supply solenoid 2, based on the washing condition determined by the process determining means 21. The drainage solenoid 3 is sequentially operated to execute washing (S-8). At this time, the detection values of the water, air temperature sensors 10, 11, the load sensor 12, and the water level sensor 13 are stored in the storage means 22 (S-
9).

When the process determined by the process determining means 21 is completed, the washing operation of the washing machine is completed (S-10).

From the above, the laundry start time is calculated based on the previous laundry conditions that do not change much in the laundry content, so the laundry is not finished even at the reserved end time,
Or it will not end too soon before the reservation end time.

[0018]

According to the present invention, since the washing operation does not end too early, the laundry is not left unattended, the laundry does not wrinkle, and the washing operation does not end even at the reservation end time. Since the situation does not occur, the time waiting in front of the washing machine until the user is finished can be eliminated.

[Brief description of drawings]

FIG. 1 is a control block diagram of a washing machine of the present invention.

FIG. 2 is an operation panel diagram of the washing machine of the present invention.

FIG. 3 is an operation flowchart of the washing machine of the present invention.

[Explanation of symbols]

 10 Water Temperature Sensor 11 Air Temperature Sensor 12 Load Sensor 19 Control Unit 21 Process Determining Means 22 Storage Means 23 Control Means 24 Start Time Calculating Means 25 Clocking Means 26 Laundry Starting Means 27 Washing Time Calculating Means

Claims (1)

[Claims] 1. A time measuring means for measuring time, a laundry amount,
Based on the sensor that detects the water temperature and the output of the sensor
Wash conditions such as washing time and rinsing time
And the washing conditions are determined by the process determining means.
Output of the sensor and the control means for executing the
Storage means for storing and the step executed by the control means
Reservation means that can arbitrarily set the end time of the
Washing time according to the output of the sensor stored in the column
The washing time calculation means for calculating
By the determined reservation end time and the washing time calculation means
Calculate the washing start time based on the calculated washing time
Start time calculating means and the start time calculating means
When the time measured by the time measuring means reaches the time
The washing start means for starting the execution of the control means.
Characteristic washing machine.