JP4836519B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine having a clock function.

In recent washing machines, energy saving is achieved (for example, refer to Patent Document 1). According to the configuration disclosed in Patent Document 1, energy saving is achieved by providing a power storage device using an electric double layer capacitor that stores regenerative energy in the process of stopping the motor of the washing rotating body.
Japanese Patent Laid-Open No. 2005-6804

  Incidentally, some washing machines have a clock function. This clock function is a function provided to automatically start washing at a desired time, for example. At this time, even if the power supply of the main microcomputer for controlling the power of the washing machine is turned off, it is necessary to separately secure a power supply for the clock in order to keep the clock function at all times. In order to always keep the clock function, for example, it is common to generate a driving power source from a commercial power source or to secure a power source by a primary battery, for example.

  In order to maintain the clock function, standby power consumption cannot be reduced to zero when a clock driving power source is generated from a commercial power source. For example, when a primary battery is applied, especially in the case of a washing machine, water may enter the electrical system inside the washing machine when the primary battery is replaced. . Even if a large number of primary batteries are provided in parallel, the battery replacement period can be extended, but battery replacement is necessary. At this time, the user who uses the washing machine has to make a service call to the manufacturer, which is troublesome. Even if the configuration of Patent Document 1 described above is applied, energy saving can be achieved, but standby power consumption cannot be reduced to zero.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to make standby power consumption zero in a washing machine having a clock function and to maintain the clock function semi-permanently without battery replacement. To provide a washing machine.

The present invention provides a washing machine having a timepiece function on condition that a power supply circuit, a switching circuit for switching on and off the power supply from the power supply to the power supply circuit, and a power supply that is switched through the power supply circuit by the switching circuit and supplied with power. The main microcomputer (hereinafter referred to as the main microcomputer) configured to be able to control the power of the washing machine main body at a frequency of, a power storage device comprising a storage battery or / and a power storage, and a charging voltage charged in the power storage device And a sub-microcomputer (hereinafter referred to as a sub-microcomputer) that operates at a frequency lower than the frequency of the main microcomputer and maintains a clock function, and in a state where the switching circuit switches the power supply to the power supply circuit side, It is configured to charge power storage devices from the power source through the power circuit, and the switching circuit is the power source. In a state where the power supply circuit side is switched to the power OFF, it is characterized in that the sub-microcomputer is configured to hold the clock function by the supply power from the power storage equipment. According to such a configuration, the sub-microcomputer can maintain the clock function by the power supplied from the power storage device when the power source is not energized from the power source. Therefore, when the power control of the washing machine body is not performed, Power consumption can be reduced to zero (0) and the clock function can be maintained semi-permanently without battery replacement.
The switching circuit is configured so that the power supply from the power supply to the power supply circuit by the sub-microcomputer cannot be switched on and off when the main microcomputer is operating normally, and the power supply from the power supply to the power supply circuit is turned on only when the operation of the main microcomputer is off. Since it can be switched on, safety measures can be taken to eliminate runaway and safety can be improved.

  According to the washing machine of the present invention, in a washing machine having a clock function, when power control of the washing machine body is not performed, standby power consumption can be reduced to 0 and the clock function is maintained semi-permanently without battery replacement. it can.

(First embodiment)
A first embodiment in which the present invention is applied to a drum-type washing machine will be described below with reference to FIGS. FIG. 2 is an external perspective view showing the overall configuration of the washing machine main body.
As shown in FIG. 2, the washing machine body 1 is provided with an outer box 3 on a resin base 2. The outer box 3 includes a side plate 4 formed of an iron plate and constituting a lateral side surface, a top plate 5 formed of a resin and constituting an upper side surface, a front cover 6 formed of a resin and constituting a front surface, and an iron plate. And a reinforcing plate (not shown) that is formed and constitutes the rear surface.

  A door 7 for taking in and out the laundry is provided at the center of the front cover 6 so that it can be opened and closed. An operation panel 8 is provided on the door 7 of the front cover 6. The operation panel 8 is provided with an operation switch 9 and, for example, a display 10 (see also FIG. 1) using a liquid crystal display. The operation switch 9 includes a power-on switch (see reference numeral 33 in FIG. 1), a power-off switch, a course switch for selecting a washing operation course, and a switch for instructing various operations (none of which is shown in FIG. 2). Etc.

A sub-microcomputer (hereinafter referred to as a sub-microcomputer) 11 and a power storage device 12 are provided close to the operation panel 8. The sub-microcomputer 11 is driven by a power source supplied from the power storage device 12, has a built-in counter for holding a clock function, and performs display control for the display 10.
A cylindrical water tank and a rotating tank (both not shown) are disposed inside the door 7.
The main control box 13 is provided in the lower part inside the washing machine body 1 and is equipped with a configuration for electrically controlling the washing machine body 1. The main control box 13 is provided with a main microcomputer (hereinafter referred to as a main microcomputer) 14, a power supply circuit 15, a relay switch 16, and the like. By combining these circuits, a power control circuit (to be described later). ) Is configured. The operation panel 8 and the main control box 13 are spaced apart from each other in the washing machine body 1. The electrical configurations in these operation panel 8 and main control box 13 are connected to each other by a communication cable (not shown).

  The main microcomputer 14 detects an operation state of the operation switch 9 provided on the operation panel 8 in a state where power is supplied to the main microcomputer 14, and based on this detection signal, a water supply valve, a drain valve ( Neither is shown) and the washing machine motor 17 (see FIG. 1) is driven by a drive circuit 18 and an inverter circuit 28 (see FIG. 1) to perform washing, rinsing, dehydrating operation, and the like. .

FIG. 1 schematically shows an example of the electrical configuration of the washing machine body.
As shown in FIG. 1, the washing machine main body 1 is mainly composed of two types of microcomputers: a main microcomputer 14 and a sub-microcomputer 11. The main microcomputer 14 is mainly used for power control, and the sub-microcomputer 11 holds a clock function or is used for display control of the display 10. The main microcomputer 14 operates at a clock frequency of 20 MHz obtained by multiplying the frequency of a 5 MHz ceramic oscillator (not shown) by 4 in the normal mode supplied with power.

  The sub-microcomputer 11 operates at a frequency lower than that of the main microcomputer 14. For example, it operates with a clock using an 8 MHz ceramic oscillator in the normal mode, and operates with a clock using a 32.768 kHz ceramic oscillator in the slow mode. Switching between the normal mode and the slow mode of the sub-microcomputer 11 is changed by a control signal from the main microcomputer 14.

  The reason for using two types of microcomputers is that the main microcomputer 14 consumes relatively high power when driven, and the sub-microcomputer 11 consumes relatively little power in the slow mode. This is because the sub-microcomputer 11 can suppress power consumption by operating the counter in the slow mode to hold the clock function. In this case, in particular, if the relay switch 16 and the power-on switch 33 provided between the commercial power supply 20 and the power supply circuit 15 are in an off state, the power supply circuit 15 and the main microcomputer 14 are not energized. The standby power consumption can be substantially zero (0).

  As shown in FIG. 1, a commercial power source 20 as a power source is an AC power source having an effective value of 100V, for example. A power supply circuit 15 is connected to the output side of the commercial power supply 20 via a switching circuit 21. The switching circuit 21 switches on and off the energization from the commercial power supply 20 to the power supply circuit 15 based on an operation signal from the power-on switch 33 and a control signal from the main microcomputer 14.

The power supply circuit 15 includes a bridge-type full-wave rectifier circuit 23, two smoothing capacitors 24a and 24b connected to the subsequent stage, a DC-DC converter 25 connected to the subsequent stage, and the DC-DC converter 25. Are provided with electrolytic capacitors 26a and 26b for stabilizing the output voltage. The power supply circuit 15 converts a commercial power supply (AC power supply) 20 into a stabilized DC power supply voltage and outputs it.
Full wave rectifier circuit 23 and smoothing capacitors 24a and 24b function as voltage doubler full wave rectifier circuit 27, and output DC voltage of about 280V by rectifying commercial power supply 20 by voltage double wave full wave rectification. And the inverter circuit 28 is supplied.

  The DC-DC converter 25 and the electrolytic capacitors 26a and 26b step down the supplied DC voltage, generate a stabilized power source of voltage V1 (for example, 5V) and voltage V2 (for example, 15V), and supply a stabilized power source of voltage V2. While supplying to the drive circuit 18, the stabilized power supply of the voltage V1 is supplied to the main microcomputer 14. FIG. An electrolytic capacitor 29 is connected between the power supply terminal and the ground terminal of the main microcomputer 14 so that the power supply voltage supplied from the power supply circuit 15 is stabilized.

  The main microcomputer 14 can control power by transmitting a drive signal to the drive circuit 18 when the power supply voltage V1 is supplied. When the main microcomputer 14 drives the washing machine motor 17 through the drive circuit 18 and the inverter circuit 28, the detection circuit 30 detects the drive state of the inverter circuit 28 and feeds it back to the main microcomputer 14. The main microcomputer 14 can drive the washing machine motor 17 through the drive circuit 18 and the inverter circuit 28 based on the signal from the detection circuit 30.

  The switching circuit 21 includes a power-on switch 33, a relay switch 16 connected in parallel to the power-on switch 33, and switches 35 and 36 for switching the relay switch 16 on and off based on a control signal from the main microcomputer 14. And is configured. The power-on switch 33 is constituted by, for example, a push momentary type and normally open type micro switch, and is a switch provided to turn on the main power source of the washing machine body 1 from the outside. Specifically, the power-on switch 33 is connected between the commercial power supply 20 and the power supply circuit 15. The relay switch 16 can be switched on and off from the main microcomputer 14 through the switches 35 and 36 by a control signal from the control terminal 14 a of the main microcomputer 14.

The switch 35 is formed by connecting a switching transistor and a resistor (both without reference numerals) in the illustrated form, and is a switch that performs an on / off switching operation on condition that the voltage V1 is supplied. The switch 36 is formed by connecting a switching transistor and a resistor (both without reference numerals) in the illustrated form. The switch 36 is connected to a coil constituting the relay switch 16 based on a control signal of the main microcomputer 14 obtained through the switch 35. It is a switch that switches energization on and off.
When both the power-on switch 33 and the relay switch 16 are turned off, the commercial power supply 20 and the power supply circuit 15 are disconnected, and the power supply circuit 15, the main microcomputer 14, the drive circuit 18, and the inverter circuit 28 are disconnected. Is not energized.

  As shown in FIG. 2, since the operation panel 8 and the main control box 13 are separated from each other, as shown in FIG. 1, the main microcomputer 14 and the sub microcomputer 11 are connected by a communication cable (not shown in FIG. 2). Electrically connected. The communication cable includes a power line and a ground line for supplying the output voltage of the DC-DC converter 25 to the sub-microcomputer 11, and a communication line for performing communication processing between the main microcomputer 14 and the sub-microcomputer 11. . The communication line includes a control line for issuing a display command from the main microcomputer 14 to the sub-microcomputer 11.

As shown in FIG. 1, the sub-microcomputer 11 is configured to operate based on a supply voltage V <b> 1 supplied from the DC-DC converter 25 through a communication cable. As described above, the power storage device 12 is installed close to the operation panel 8, and the sub-microcomputer 11 is driven by the charging voltage V <b> 3 charged in the power storage device 12.
The power storage device 12 is configured by, for example, connecting single cells 12a and 12b of an electric double layer capacitor in series. When an electric double layer capacitor is applied to the electricity storage device 12, the maximum voltage value between the electrodes per unit cell 12a of the electric double layer capacitor is relatively low, for example, 1.4V to 1.5V. As shown in FIG. 4, it is preferable to use a plurality of single cells 12a of electric double layer capacitors connected in series (for example, two: see single cells 12a and 12b).

  In this case, it is desirable to provide a diode 32 between the power supply circuit 15 and the power storage device 12 in the forward direction from the output side of the power supply circuit 15 to the power storage device 12 side as necessary. The diode 32 has a backflow preventing action so that the voltage once charged in the power storage device 12 does not discharge to the power supply circuit 15 side. For this reason, charging efficiency can be improved. Further, the output voltage V1 of the DC-DC converter 25 is preferably set to 5 V, for example. Then, even if the voltage drops due to the forward voltage of the diode 32, a sufficient charging voltage V3 can be supplied to the storage device 12. By comprising in this way, the charge time of one time can be made into a short time (for example, 5 second), and a charging cycle can be made into a short period (for example, 5-7 days).

Next, the operation of the above configuration will be described.
In the initial state, both the power-on switch 33 and the relay switch 16 are switched off. At this time, no power is supplied to the power supply circuit 15, the main microcomputer 14, the drive circuit 18, and the inverter circuit 28.

Although power is supplied to the sub-microcomputer 11 from the storage device 12, the output voltage of the DC-DC converter 25 is 0V and the voltage V1 is 0 [V]. However, since the diode 32 blocks the current path from the storage device 12 to the power supply circuit 15 side, the discharge path of the storage device 12 is only on the sub-microcomputer 11 side, and power can be efficiently supplied to the sub-microcomputer 11. it can. The sub-microcomputer 11 operates the counter with a ceramic oscillator of 32.768 kHz when a control signal for switching to the slow mode is given from the main microcomputer 14 in advance.
At this time, even if the sub-microcomputer 11 drives the counter for holding the clock function, the power consumption when the sub-microcomputer 11 is driven is very small, so that the standby power consumption is substantially zero (0). can do.

Hereinafter, the operation when starting operation according to an instruction from the outside will be described.
A schematic operation when the washing machine body 1 starts the washing operation from when the standby power consumption is 0 will be described. The user operates the power-on switch 33 to turn on the main power. When both ends of the power-on switch 33 are energized, the voltage of the commercial power supply 20 is supplied to the input side of the power supply circuit 15. The supply voltage of the commercial power supply 20 is double voltage full wave rectified by the voltage double voltage full wave rectifier circuit 27, smoothed by the capacitors 24 a and 24 b, and supplied to the DC-DC converter 25 and the inverter circuit 28.

  When this supply voltage is applied to the DC-DC converter 25, the DC-DC converter 25 generates two types of DC voltages V1 and V2. Of these, the DC voltage V <b> 1 is supplied to the main microcomputer 14. At substantially the same time, the DC voltage V1 is stepped down by the diode 32 via the communication cable and charged in the power storage device 12.

  When the voltage is supplied to the main microcomputer 14, the main microcomputer 14 outputs a “high” signal to the switch 35 and turns on the switch 35. Then, since the voltage V1 is applied to the input of the switch 36, the switch 36 is turned on. When the switch 36 is turned on, the coil constituting the relay switch 16 is energized, and the relay switch 16 is turned on. Then, even if the energization of the power-on switch 33 is self-returned and turned off, the energization between the commercial power supply 20 and the power supply circuit 15 is maintained. At this time, the main microcomputer 14 transmits a clock display command signal to the sub-microcomputer 11.

After that, when the driving course is set, the main microcomputer 14 receives this setting signal from the sub-microcomputer 11, drives and controls the washing machine motor 17 by the drive circuit 18, the inverter circuit 28, and the detection circuit 30. Execute washing operation according to the driving course.
The user operates a power-off switch (not shown) when stopping the operation of the washing machine main body 1. When this operation signal is given to the main microcomputer 14, the main microcomputer 14 turns off the relay switch 16. To control.

The operation when starting operation based on the reservation function will be described below.
The washing machine body 1 has a clock function that counts time using a counter built in the sub-microcomputer 11, and realizes a reservation function using the clock function. Below, an effect | action at the time of starting washing operation by this reservation function is demonstrated. The user can set the reservation time when the main microcomputer is energized. The user sets the reserved time by operating the operation panel 8. The operation content of the operation panel 8 is transmitted to the main microcomputer 14, and the main microcomputer 14 sets a reserved time based on a counter built in the sub-microcomputer 11. When the main microcomputer 14 sets the reservation time, the main microcomputer 14 transmits the reservation time information to the sub-microcomputer 11, and the sub-microcomputer 11 stores the reservation time information.

When the reserved time is set, the main microcomputer 14 controls the relay switch 16 to remain on without turning it off even if a power-off switch (not shown) is pressed. The sub-microcomputer 11 measures the time with a built-in counter, and transmits the information to the main microcomputer 14 via a communication cable when the reserved time is reached. Then, the main microcomputer 14 starts a washing operation.
It is possible to reduce standby power consumption by using two types of microcomputers, the main microcomputer 14 and the sub-microcomputer 11, and driving the sub-microcomputer 11 with a primary battery when the main microcomputer 14 is not energized. In this case, however, the battery must be replaced every several years. Therefore, there is a risk of causing trouble for the user.

  According to this embodiment, the power storage device 12 is charged when the main microcomputer 14 is energized through the power supply circuit 15, and the sub-microcomputer 11 is charged when the main microcomputer 14 is not energized through the power supply circuit 15. The sub-microcomputer 11 can hold the clock function because it is driven by the voltage charged in the appliance 12. Therefore, when the power supply circuit 15 and the main microcomputer 14 are not energized, the standby power consumption of the washing machine body 1 can be maintained at zero. In addition, in this case, since the power storage device 12 supplies power to the sub-microcomputer 11, the power can be backed up semi-permanently without battery replacement.

(Second embodiment)
FIG. 3 shows a second embodiment of the present invention. The difference from the above-described embodiment is that a detection circuit for detecting a charging voltage charged in the power storage device is provided. Another difference is that the sub-microcomputer turns off the operation of the main microcomputer when the switching circuit charges the power storage device through the power circuit from the commercial power supply when the power supply is turned off. There is a place to control to hold. The same parts as those in the previous embodiment are denoted by the same reference numerals and the description thereof is omitted, and only different parts will be described below.

As shown in FIG. 3, the power storage device 12 is provided with a voltage detection circuit 40 as detection means. The voltage detection circuit 40 is constituted by a circuit using a comparator, for example, and measures the charging voltage V3 charged in the power storage device 12, and the measurement result is given to the sub-microcomputer 11.
A control line A is connected from the sub-microcomputer 11 to the reset terminal 14 b of the main microcomputer 14. Since the control line A is connected to the reset terminal 14b, the sub-microcomputer 11 can reset the main microcomputer 14 to turn on / off the operation of the main microcomputer 14.

  A switching circuit 41 is provided in parallel with the relay switch 16. The switching circuit 41 includes a normally open relay switch 42, a resistor 43, a normally closed relay switch 44, and switches 45 and 46. Among these, the relay switch 42 is configured by a relay switch that can be driven at a relatively low voltage (for example, about 3 V). This is because the relay switch 42 is configured to be controllable from the sub-microcomputer 11. The switching circuit 50 is composed of switching circuits 21 and 41.

  Since the relay switch 42 is configured to perform drive control only when the operation of the main microcomputer 14 is off, a relay switch that uses a relatively small energization current and can be driven at a low voltage (for example, 3 V to 4 V) is used. And good. In practice, as shown in FIG. 3, the relay switch 42 performs an on / off switching operation when the supply voltage V <b> 3 to the sub-microcomputer 11 is applied to one terminal of the drive control coil constituting the relay switch 42. Do. However, since it is driven at a low voltage, the contact resistance is low and the rated current is often low. In this case, a current limiting resistor 43 may be provided in series with the relay switch 42. Thereby, the inrush current with respect to the electrolytic capacitors 24a and 24b constituting the power supply circuit 15 can be reduced.

  The control terminal 11 a of the sub-microcomputer 11 is connected to the control terminal of the switch 45. The switch 45 is formed by connecting a switching transistor and a resistor (both without reference numerals) in the illustrated form. Based on a control signal from the sub-microcomputer 11, the switch 45 is connected to ground (turned on). Open the output terminal (off: open). The output terminal of the switch 45 is connected to the coil of the relay switch 42 through a switch constituting the relay switch 44.

On the other hand, the control terminal 14 c of the main microcomputer 14 is connected to the control terminal of the switch 46. This switch 46 is formed by connecting a switching transistor and a resistor (both not shown) in the form shown in the figure. Based on a control signal from the main microcomputer 14, a current is passed through a coil constituting the relay switch 44 and relayed. The switch 44 is turned off or the relay switch 44 is turned on by de-energizing the coil.
The main microcomputer 14 outputs a low signal from the control terminal 14c in a reset state (operation off state) in which a reset signal is given from the sub-microcomputer 11 to the reset terminal 14b. Conversely, the main microcomputer 14 outputs a high signal from the control terminal 14c in a normal state where no reset signal is given from the sub-microcomputer 11 to the reset terminal 14b.

The operation of the above configuration will be described.
The switching circuit 21 switches off the energization from the commercial power supply 20 to the power supply circuit 15 (the main microcomputer 14 is turned off, and the sub-microcomputer 11 is operated with the charging voltage charged in the storage device 12 in the slow mode. A case where the counter for operation is operated will be described.

  The sub-microcomputer 11 consumes power by operating a clock counter, and the voltage charged in the power storage device 12 decreases. When the voltage detection circuit 40 detects that the charging voltage charged in the power storage device 12 has decreased from a predetermined voltage, the sub-microcomputer 11 controls the relay switch 42 to be turned on through the switch 45 and the relay switch 44. Then, the commercial power supply 20 is energized to the power supply circuit 15, and the power supply circuit 15 generates DC power supply voltages V 1 and V 2, and the DC power supply voltages V 1 and V 2 are supplied to the power storage device 12. Thereby, the storage device 12 can be charged.

  At this time, since the power supply voltage V1 is also applied to the main microcomputer 14, the main microcomputer 14 can be activated. Prior to or after this, the sub-microcomputer 11 sends a reset signal to the reset terminal 14b of the main microcomputer 14. It is desirable to keep the operation of the main microcomputer 14 off (reset state). Even if the power supply voltage V1 is applied to the main microcomputer 14 and the main microcomputer 14 is activated, the charging time is short (for example, 5 seconds), so the main microcomputer 14 has only time for initialization (initialization) and consumes power. However, since the main microcomputer 14 is not activated by supplying a reset signal to the main microcomputer 14, power consumption can be further suppressed.

  Since the main microcomputer 14 gives a low signal to the control terminal of the switch 46 when the power is not supplied or the operation is held off (reset state), the switch 46 is turned off and the coil of the relay switch 44 is turned off. Is not energized, and the relay switch 44 remains on. In this case, the sub-microcomputer 11 can appropriately perform on / off switching control of the relay switch 42 via the switch 45.

  On the other hand, when the main microcomputer 14 is operating normally, a high signal is given to the control terminal of the switch 46, so that the coil of the relay switch 44 is energized and the relay switch 44 is held off. Then, the sub-microcomputer 11 cannot perform the on / off switching control of the relay switch 42 through the switch 45. That is, the relay switch 42 can be switched on from the sub-microcomputer 11 only when the operation of the main microcomputer 14 is off (power is not supplied or reset). This is a function provided as a safety measure to eliminate runaway. Thereby, safety can be improved.

According to the present embodiment, the voltage detection circuit 40 for detecting the charging voltage charged in the power storage device 12 is provided, and the commercial power supply 20 to the power supply circuit 15 are provided on the condition that the detection voltage is lower than a predetermined voltage. Since the power storage device 12 is charged through the voltage drop, it is possible to reliably charge by detecting a voltage drop.
In addition, when the switching circuit 21 is turned off to the power supply circuit 15 side and the power is supplied from the commercial power supply 20 to the power storage device 12 for charging, the sub-microcomputer 11 keeps the operation of the main microcomputer 14 off. Therefore, even if the main microcomputer 14 is energized, power consumption of the main microcomputer 14 can be suppressed.
In addition, since the switching circuit 41 is configured to be able to switch on energization from the commercial power supply 20 to the power supply circuit 15 only when the operation of the main microcomputer 14 is off, safety can be improved.

(Third embodiment)
FIG. 4 shows a third embodiment of the present invention. The difference from the second embodiment is that a power supply circuit 51 for charging the power storage device 12 is separately provided and the power supply circuit 51 of the commercial power supply 20 is provided. Is provided in place of the switching circuit 41 in the above-described embodiment. The same parts as those in the previous embodiment are denoted by the same reference numerals and the description thereof is omitted, and only different parts will be described below.
As shown in FIG. 4, the power supply circuit 51 is provided separately from the power supply circuit 15, and is configured to rectify, smooth, and step down the commercial power supply 20 and charge the power storage device 12. The power supply circuit 51 includes the voltage doubler rectifier circuit 27, the DC-DC converter 25, and the electrolytic capacitor 31 that stabilizes the DC output voltage.

The switching circuit 52 includes a relay switch 42, a resistor 43, and a switch 45. The relay switch 42 of this switching circuit 52 switches energization from the commercial power supply 20 to the power supply circuit 50 on and off. This relay switch 42 can be switched on and off from the sub-microcomputer 11 through a switch 45.
That is, the sub-microcomputer 11 can charge the storage device 12 through the power supply circuit 51 by turning on the relay switch 42 when the detection voltage of the voltage detection circuit 40 drops below a predetermined voltage. Also in the present embodiment, substantially the same function and effect as in the previous embodiment can be obtained.

(Other examples)
The present invention is not limited to the above-described embodiments. For example, the following modifications or expansions are possible.
Although the example which applied the single cell 12a, 12b of the electric double layer capacitor as the electrical storage apparatus 12 was shown, it replaces with this and a secondary battery (storage battery) may be applied and these may be combined.

  Although the sub-microcomputer 11 has transmitted the reset signal to the reset terminal 14b of the main microcomputer 14 to save the power of the main microcomputer 14, the present invention is not limited to this. For example, the power supply circuit 15 to the main microcomputer 14 A switch (not shown) may be provided in a power supply line for energizing the main microcomputer 14 so that the sub-microcomputer 11 performs on / off control of power supply to the main microcomputer 14 by the switch. Alternatively, the main microcomputer 14 may be provided with a low power consumption mode, and the main microcomputer 14 may be controlled to the low power consumption mode by controlling the main microcomputer 14 from the sub microcomputer 11. Thereby, power consumption can be suppressed.

1 is a schematic electrical configuration diagram showing a first embodiment of the present invention. External view of washing machine FIG. 1 equivalent view showing a second embodiment of the present invention. FIG. 1 equivalent view showing a third embodiment of the present invention.

Explanation of symbols

  In the drawings, 1 is a washing machine body (washing machine), 11 is a sub-microcomputer, 12 is a power storage device, 14 is a main microcomputer, 15 and 51 are power supply circuits, 21, 41 and 50 are switching circuits, and 40 is a voltage. A detection circuit (detection means) is shown.

Claims (4)

In a washing machine with a clock function,
A power circuit;
A switching circuit for switching on and off energization from the power source to the power circuit;
A main microcomputer configured to be able to control the power of the washing machine body at a predetermined frequency on the condition that power is switched by the switching circuit and power is supplied through the power circuit;
A storage device comprising a storage battery or / and a storage device; and
A sub-microcomputer (hereinafter referred to as a sub-microcomputer) that operates by a charging voltage charged in the power storage device and that operates at a frequency lower than the frequency of the main microcomputer and retains the timepiece function.
In the state in which the switching circuit is energized and switched to the power supply circuit side, the power storage device is configured to be charged from the power supply through the power supply circuit,
In the state in which the switching circuit switches the power supply to the power supply circuit side to be turned off, the sub-microcomputer is configured to hold the timepiece function by a power supply from the power storage device ,
The switching circuit is configured so that energization from the power source by the sub-microcomputer to the power circuit cannot be switched on and off when the main microcomputer is normally operating, and from the power source only when the operation of the main microcomputer is off A washing machine characterized in that energization to a power circuit can be switched on .   The washing machine according to claim 1, wherein the power storage device includes an electric double layer capacitor. A detecting means for detecting a charging voltage charged in the power storage device;
The washing machine according to claim 1 or 2, wherein the washing device is configured to supply and charge the power source to the power storage device on condition that a detection voltage of the detection unit is lower than a predetermined voltage.   The sub-microcomputer turns off the operation of the main microcomputer when the storage circuit charges the power storage device through the power circuit when the power source is switched off to the power circuit side. 4. The washing machine according to claim 3, wherein the washing machine is controlled so as to be held in the machine.

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