JPH043210B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a dishwasher in which the driving of a washing device is controlled by a control device.

<Prior art> As shown in Figure 4, the dishwashing process of a conventional dishwasher includes pre-washing (4 minutes), main washing (30 minutes), rinsing, boiling water rinsing, drying, and in between each. Consists of drainage.

<Problems to be Solved by the Invention> In the above-mentioned conventional system, even when dishwashing is performed at night when low noise is required, the operating rate of the washing device is 100% during pre-washing, main washing, etc. It will be held in

Therefore, there is a drawback that the user cannot fall asleep while operating the dishwasher.

SUMMARY OF THE INVENTION The present invention aims to solve the above-mentioned problems and provide a dishwasher that can reduce noise and prevent the user from falling asleep.

<Means for solving the problem> As shown in FIGS. 1 and 6, the means for solving the problem according to the present invention includes a cleaning device 3 that delivers the cleaning liquid 1 to the liquid jetting body 2, and when the cleaning device 3 is driven, A dishwasher in which dishes are washed includes a timer operation start switch 12 for performing a dishwashing process in a predetermined time period, a setting device 14 for setting a time to start timer operation in a predetermined time period, and the timer. A control device 4 is provided that controls the driving of the washing device 3 during a predetermined time period based on the output from the operation start switch 12.
or a capacity reducing means 4ab that reduces the amount of jetting of the cleaning liquid 1, and a timer changing means 4b that extends the driving time of the cleaning device 3 beyond the normal cleaning time;
Standby means 4 for waiting to drive the cleaning device 3 until a time within a predetermined time period set by the setting device 14;
c.

<Function> In the problem solving means described above, when the tableware washing process is set during the night time period, the control device 4 outputs an output to the washing device 3 to lower the washing ability and to extend the washing time.

As the cleaning ability decreases, the amount of cleaning liquid 1 jetted from the liquid jetting body 2 decreases, and the jetting force becomes weaker.
Since the cleaning time is extended, the overall cleaning performance in the dishwashing process is better carried out without deterioration.

Since the jetting force of the cleaning liquid 1 from the liquid jetting body 2 is weak, even if the dishwashing process is performed at night, the noise is low and the user's sleep is prevented from being disturbed.

<Example> Hereinafter, an example of the dishwasher of the present invention will be described based on FIGS. 1 to 3 and 5. FIG. 1 is a time chart showing the washing process of a dishwasher according to an embodiment of the present invention, FIG. 2 is a schematic side view of the structure of the washing device, FIG. 3a is a control block diagram thereof, and FIG. FIG. 5 is a longitudinal sectional front view of the dishwasher, and FIG. 6 is a functional block diagram of the control device.

As shown in the figure, the dishwasher is equipped with a washing device 3 that sends the washing liquid 1 to a liquid jetting body 2, and that washes dishes by driving the washing device 3. An operation start switch 12, a setting device 14 for setting the time to start timer operation in the nighttime period, and a control device 4 for controlling the driving of the cleaning device 3 in the nighttime period based on the output from the timer operation start switch 12. is provided, and the control device 4 reduces the operating capacity of the washing device 3 during the dishwashing process, or
or until the time within the nighttime period set by the setting device 14, including the ability reducing means 4a that reduces the amount of jetting of the cleaning liquid 1, the timer changing means 4b that extends the driving time of the cleaning device 3 beyond the normal cleaning time, and Standby means 4c for waiting to drive the cleaning device 3
and a normal operation means 4d for carrying out a normal tableware washing process.

The cleaning device 3 includes a cleaning motor 7 that rotates the impeller 6, a cleaning pump 8 that houses the impeller 6, a liquid feed pipe 9 that connects the cleaning pump 8 and the liquid ejecting body 2, and the cleaning pump. It is composed of a bifurcated inflow pipe 10 connected to the inflow side of the cleaning liquid 1 of No. 8, and a valve 11 disposed in one flow path of the bifurcated inflow pipe 10.

The control device 4 is a general one-chip microcomputer that has a program ROM, data RAM, ALU, etc. inside, and is driven by a reference clock oscillator.

The control device 4 has a timer operation start switch 1 on the input side for carrying out the dishwashing process during nighttime hours.
2, a normal operation start switch 13 that performs the dishwashing process at normal times, and a setting device 14 that sets the time to start the timer operation and sets the night time period.

The control device 4 includes, on the output side, drive circuits for the washing motor 7, the drain motor 15, a heater 16 used during main washing, rinsing with hot water, and drying dishes, and a timer that indicates that the timer is in operation. The display section 17 and the valve 11 are connected.

The control device 4 includes the normal operation start switch 1
3, the washing motor 7, drain motor 15, and heater 16 are controlled, and the valve 11 is opened to perform the normal dishwashing process, and the ON signal from the timer operation start switch 12 controls A function that waits for the start of the dishwashing process until the night time period set by the setting device 14, and a function that activates the washing motor 7 only during the pre-washing and main washing of the dishwashing process in the nighttime time period. Reduce the operating rate or reduce the valve 11
It has the function of closing the door.

In Fig. 5, 18 is the main body of the dishwasher, 19 is a washing tank containing a washing basket 20, 21 is a drain pipe, and 2
2 represents a filter, and W in FIG. 1 represents a water supply.

In the above configuration, the normal operation start switch 13
When turned on, the control device 4 performs pre-washing (4 minutes), main washing (30 minutes), rinsing, boiling water rinsing, drying, and in between each, as shown in Fig. 4 and Fig. 3b. Control the drainage. At this time, the control device 4 controls the cleaning motor 7 of the cleaning device 3.
It outputs an output to operate at 100% of its operating capacity, and also outputs an open signal to the valve 11.

In addition, when operating at night, the setting device 14 first sets the start time ( For example, after setting the timer operation start switch 1 to 11:00 p.m.
2 turns on. Then, if the current time is 9:00 p.m., the control device 4 outputs an output that the cleaning device 3 should stand by for two hours until 11:00 p.m. Then, at eleven o'clock in the afternoon, the control device 4
outputs to the washing device 3 to start the tableware washing process.

When the dishwashing process starts, pre-washing is first performed. The control device 4 outputs an output to perform this pre-washing for, for example, eight minutes (twice the time of a normal dishwashing process). After the water is drained, the main washing is started, and the control device 4 outputs an output so that the main washing is to be carried out for, for example, 60 minutes (twice the time of a normal dishwashing process).
However, during pre-washing and main washing,
The control device 4 outputs an output to reduce the rotation speed by phase control or the like to reduce the operating capacity of the cleaning motor 7 to, for example, 70%, or to close the valve 11.
The cleaning ability of the cleaning device 3 is reduced by reducing the amount of cleaning liquid 1 sent to the liquid jetting body 2.

After the main washing is completed, the controller 4 controls to turn on the heater 16 after draining, rinsing, etc., and ends the dishwashing process by drying.

Therefore, even when washing dishes at night while the user is sleeping, the noise associated with washing (particularly the sound of the washing liquid 1 from the liquid jetting body 2 hitting the washing tank 19) can be reduced.

It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

For example, in the tableware washing process during the night time period, the washing times for pre-washing and main washing are not limited to the above embodiments.

<Effects of the Invention> As is clear from the above explanation, according to the present invention, when a dishwashing process is set at a predetermined time, the washing device waits for operation until the set time, and then the washing device is given the washing capacity. Since the dishes are washed by outputting a signal to extend the washing time at the same time as the reduction in washing time, the reduction in washing performance can be compensated for by extending the washing time, and the overall washing performance in the dishwashing process is equal to that of a normal washing process. Compared to this, there is no deterioration and the cleaning condition is good.

In addition, the jetting force of the cleaning liquid from the liquid jetting body becomes weaker, and the noise hitting the washing tank, etc. becomes smaller, or the noise emitted from the washing equipment becomes lower, so even if the dishwashing process is carried out at night, the noise is low. This prevents the user from interfering with his or her sleep.

[Brief explanation of drawings]

Fig. 1 is a washing process diagram of a dishwasher showing an embodiment of the present invention, Fig. 2 is a schematic configuration diagram of the washing device, Fig. 3a is a control block diagram thereof, and Fig. 3b is its flow. FIG. 4 is a time chart showing the dishwashing process during normal operation of the conventional dishwasher and the present invention, FIG. 5 is a vertical side view of the same dishwasher, and FIG. 6 is a functional block diagram of the control device. 1: cleaning liquid, 2: liquid jetting body, 3: cleaning device,
4: Control device, 6: Impeller, 7: Cleaning motor,
8: Cleaning pump, 9: Liquid feed pipe, 10: Bifurcated inflow pipe, 11: Valve, 12: Timer operation start switch, 13: Normal operation start switch, 14: Setting device, 15: Drainage motor.

Claims (1)

[Claims] 1. In a dishwasher that is equipped with a cleaning device that delivers cleaning liquid to a liquid ejector and that washes dishes by driving the cleaning device, a timer operation start switch and a timer operation start switch for performing the dishwashing process at a predetermined time period are provided. A setting device for setting the time to start the washing machine in a predetermined time period, and a control device for controlling the drive of the washing device in a predetermined time period based on the output from the timer operation start switch, the control device A capacity reducing means for reducing the operating capacity of the cleaning device or reducing the amount of cleaning liquid ejected during the cleaning process, a timer changing means for extending the driving time of the cleaning device beyond the normal cleaning time, and a timer changing means for extending the driving time of the cleaning device beyond the normal cleaning time. 1. A dishwasher comprising: a standby means for waiting to drive the washing device until a time within a predetermined time period.