JP2009078025A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detection means of a washing machine which carries current constantly not so that the operation is automatically resumed halfway in the process after power is recovered when power failure occurs during washing operation. <P>SOLUTION: The washing machine has a nonvolatile storage means for storing operation states, circuitry having a means for controlling turning on/off of the power so as not to conduct a microcomputer during operation standby, a lid attached to a feeding port of laundry and a lid lock for locking the lid so as not to be opened during operation. A contact with a latch interlocked with the lid lock is serially connected to a power relay. Thereby, the power failure occurs during the operation is detected and the operation is automatically resumed halfway in the process after the power recovery. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a washing machine.

  The conventional always-on washing machine shown in FIG. 2 is capable of returning to operation because the microcomputer is automatically energized when a power failure occurs and the power is turned on again during the operation of the washing machine. Operation can be resumed from the stored process. In addition, in a washing machine equipped with a battery, by operating the clock function during a power outage during operation, the power outage time is counted, and if the power outage is less than a certain time, the operation is resumed. When it happens, you can avoid resuming driving.

  The conventional washing machine that is not always energized as shown in FIG. 3 can be restarted from the middle of the process stored at the momentary power failure by the user pressing the power-on switch when a power failure occurs during the washing operation.

Japanese Patent Laid-Open No. 4-224795 Japanese Patent Laid-Open No. 7-275561

  The always energized washing machine shown in FIG. 2 can automatically return to operation, but there is a problem that it consumes power during operation standby. Also, if you want to count the time during a power outage and resume operation if there is a power outage for less than a certain time, and if you do not resume operation when there is a power outage over a certain time, you must have a clock function, It must be backed up with a battery to store the information.

  The washing machine that is not energized at all times shown in FIG. 3 does not consume power during operation standby, but cannot be restarted unless the user operates the power switch. For this reason, if this operation is forgotten, the washing process ends in the middle of the operation, which makes the user feel uncomfortable.

  In the present invention, in order to solve the above-mentioned problem, in a washing machine having a circuit configuration that does not consume power during operation standby, it is automatically resumed from the middle of operation without a user operating the power switch after a power failure recovery. The purpose is to provide a washing machine.

  In a washing machine having a circuit configuration having means for controlling turning on and off of the power so that the microcomputer is not energized during standby, a lid installed at the laundry inlet and a lid during operation When the lid is locked by connecting a lid lock that locks it so that it cannot be opened and a latched contact linked to the lid lock in parallel with the power relay, without operating the power `` ON '' switch, The above problem is solved by turning on the power.

  As described above, according to the present invention, it is possible to automatically return after a power failure in a washing machine that is not always energized.

  Comparing the conventional always-on washing machine shown in FIG. 2 with the present invention, there is an advantage that power consumption is not required during operation standby. In addition, when comparing the prior art in the conventional washing machine that is not always energized as shown in FIG. 3 and the present invention, when a power failure occurs during operation, the user does not press the power “on” switch automatically when returning. The microcomputer can be energized and resumed from the middle of operation.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram of a conventional continuous energization, FIG. 3 is a block diagram of a conventional non-continuous energization, and FIG. 4 is an embodiment of the present invention. FIG. 5 is a flowchart showing the contents of control in one embodiment of the present invention, FIG. 6 is an operation panel diagram showing an embodiment of the present invention, and FIG. 7 is one embodiment of the present invention. FIG. 8 is a flowchart showing an embodiment of the present invention.

  The washing machine of this embodiment shown in FIGS. 1 and 4 includes a microcomputer 13 having a nonvolatile storage means 14, a drive circuit 20, output devices 6-12, input devices 15-19, a power source 4, a power relay 2, and a load. When the relay 5, the lid lock 11, and the lid lock 11 are engaged, the contact is held in a closed state, and when the lid lock is released, the contact is held open. When the power “ON” switch 1 of the operation panel 19 is pressed, the power supplied from the outlet is transformed and rectified by the rectifier circuit, the microcomputer 13 is energized and the power relay 2 is turned on. The microcomputer is supplied with input signals from the lid lock detection 15, the water level sensor 16, the vibration sensor 17, the rotation sensor 18, the operation switch 19, and the like, and according to a predetermined program, the main water supply valve 6 and the auxiliary water supply valve 7 are provided. , Controls the drain valve 8, bath water pump 9, circulation pump 10, lid lock 11, motor 12 and the like. The drive circuit 20 controls the conduction state in accordance with an instruction from the microcomputer 13 to perform power supply control to the subordinate load, and executes washing, rinsing, and dehydration processes. When washing is completed, the power relay 2 is turned off by a signal from the microcomputer 13 to cut off the supply of power. When the lid is locked, the microcomputer 13 is energized by the latched contact 3 interlocked with the lid lock even when the power relay 2 is turned off.

  A series of operations of the embodiment is shown in the flowchart of FIG.

  First, the operation during a power failure will be described. When a power failure occurs during operation (S8) (S13 “Yes”), the process, course, elapsed time, and the like that are currently operating are instantaneously stored in the nonvolatile storage means (S15). Since power is not supplied to the microcomputer after the power failure, the operation stops halfway and the clothes in the washing machine remain in the state at the time of the power failure.

  When a power failure does not occur and the operation is normally completed (S9 “Yes”), the lid lock is released so that the user can take out the clothes. Therefore, the latched contact linked to the lid lock is opened. As a result, if the lid lock is not released, that is, if the contact with the latch linked to the lid lock is kept closed, it is understood that a power failure occurred during the operation.

  When the operation ends normally, the power is shut off so that the microcomputer is not energized.

  The operation when the power is turned on after the power failure is restored or when the operation is completed normally will be described. When the power supply is restored from the power failure, the latched contact linked to the lid lock is in the closed state (S1 “Yes”), so that the power is supplied to the microcomputer even when the power relay is off.

  When the power is turned on after the operation is normally completed, the contact with the latch linked to the lid lock is in the open state (S1 “No”), and therefore the power is turned on by pressing the power “on” switch (S2 “ Yes "). At this time, since there is no operation information stored in the nonvolatile storage means (S4 “No”), the display panel is initially displayed. Then, the user sets the buttons for the course, the washing time, the number of times of rinsing, the dehydration time, the amount of water, etc. (S11), and presses the “start” switch (S12 “Yes”).

  When recovering from a power failure, since there is operation information stored at the time of the power failure, the operation information is read (S3), the operation information is restored, and the processes and courses performed at the time of the power failure are resumed after a certain period of time (S5). .

  After the restart process or when the “Start” switch is pressed, the lid is locked so that the lid does not easily open during operation. As a result, the contact with latch linked to the lid lock is also closed (S6). Thereafter, the driving operation is started (S7).

  In order to be able to set the power failure detection function according to the user's preference, a specific switch operation can be set so that the operation is not resumed even if the lid is locked when the power failure is restored.

  As shown in FIG. 7, during operation setting (S11), by operating the power failure recovery mode changeover switch on the operation panel 19, the presence or absence of power failure recovery is set, and the setting is stored in the nonvolatile storage means.

  When the mode is set to execute the power failure recovery when the power is recovered from the power failure (S15 “Yes”), the power failure recovery is performed. Further, when the mode is set so as not to perform the power failure recovery (S15 “No”), the power failure recovery is not performed, the lid lock is released (S10), and the process ends.

  When the user depresses “OFF” of the operation switch and intentionally stops the operation, release the lid lock, open the latched contact linked to the lid lock, and then turn off the relay to operate Can be prevented from automatically restarting.

  However, when the lid cannot be released, there is a problem that the operability is deteriorated because the movement starts again even when the power is turned off. As shown in FIG. 8, the problem is that when the power is restored from the power failure (S1 “YES”), a restart display is performed for a certain period of time (S16). By operating the power failure recovery release switch 22 on the panel 19, the restart cancellation setting (S17) can be performed and solved. If the restart is canceled (S16 “YES”), the lid lock is released (S10) and the process is terminated.

The block diagram of this invention. Block diagram of continuous energization (conventional). Block diagram that does not energize all the time (conventional). The schematic diagram of the washing machine which shows the form of one Example of this invention. The flowchart which shows the control content in one Example of this invention. The operation panel figure which shows the form of one Example of this invention. The flowchart which shows one Example of this invention. The flowchart which shows one Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power supply "ON" switch 2 Power supply relay 3 Contact with latch linked to lid lock 4 Power supply 5 Load relay 6 Main water supply valve 7 Auxiliary water supply valve 8 Drain valve 9 Bath water pump 10 Circulation pump 11 Cover lock 12 Motor 13 Microcomputer 14 Nonvolatile storage means 15 Lid lock detection 16 Water level sensor 17 Vibration sensor 18 Rotation sensor 19 Operation switch 20 Drive circuit 21 Power failure recovery switch 22 Power failure recovery release switch

Claims (4)

  In a washing machine equipped with a circuit configuration that has means for controlling the turning on and off of the power so that the microcomputer is in a dormant state during operation standby, the lid installed at the laundry inlet and the lid locked during operation The washing machine is characterized in that a lid lock to be connected and a contact with a latch linked to the lid lock are connected in parallel with the power relay. In claim 1,
A washing machine comprising storage means for storing each step of washing, rinsing and dehydration and the current operation state, and means for returning to the operation state before the power failure. In claim 2,
A washing machine characterized in that a power failure detection setting is switched by pressing a switch. In claim 3,
4. The washing machine according to claim 3, wherein when the power is restored from the power failure, the restart display is performed for a predetermined time, and the restart is displayed without waiting for the operation to be restarted.

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