JPH07111966A - Dish washer - Google Patents

Abstract

PURPOSE:To achieve higher washing performance by reducing fouling with the operations of agitation and draining depending on the enunciation for the opening of a door during a waiting for reservation and the time and frequency of opening the door in a dish washer in which washing water is jetted to dishes housed in a washing tank to wash the dishes. CONSTITUTION:Washing water in a washing tank 1 is fed into a washing nozzle 3 with a washing pump 4 to jet toward dishes 2 with a washing nozzle 3. Water is supplied into the washing tank 1 with a water supply valve 13, the water level in the washing tank 1 is detected with a water level switch 6 and the washing water in the washing tank 1 is drained with a drain pump 14. A control means 15 to control a series of sequential operations of washing, rinsing and drying processes of the dishes 2 works to operate the washing pump 4, the drain pump 14 or an enunciation means 17 for reporting abnormality according the time of opening a door 10 or the frequency of opening or closing it detected by a door detection means 15 to detect the open or close state of the door 10 during the waiting for reservation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for controlling reserved driving.

[0002]

2. Description of the Related Art In recent years, dishwashers having programs such as washing, rinsing and drying have become mainstream.

Conventionally, this type of dishwasher has been constructed as shown in FIG. The configuration will be described below.

As shown in the figure, a cleaning tank 1 stores dishes 2 inside and stores cleaning water at the bottom. The cleaning nozzle (cleaning means) 3 is rotatably supported in the cleaning tank 1,
Wash water is spouted toward the tableware 2. The cleaning pump 4 (cleaning means) sends cleaning water to the cleaning nozzle 3,
The washing pump 4 is driven by a motor 5. The water level switch (water level detection means) 6 detects the water level in the cleaning tank 1. The heater 7 is arranged at the bottom of the cleaning tank 1 and heats cleaning water.

A thermistor (temperature detecting means) 8 is attached to the bottom of the cleaning tank 1 so as to be in close contact with the bottom of the cleaning tank 1, and detects the temperature of the cleaning water. The blower fan 9 blows out the steam in the cleaning tank 1 and is discharged to the outside of the machine through the exhaust port. In addition, 10 is a door. The tableware basket 11 stores the tableware 2 in the cleaning tank 1. The control means 12 controls a series of sequential operations of washing, rinsing, and drying steps of the tableware 2. A water supply valve (water supply means) 13 supplies tap water into the cleaning tank 1, and a drainage pump (drainage means) 14 discharges the cleaning water to the outside of the cleaning tank 1. The door detection means 15 is the door 10.
The opening / closing of the door is detected by the state of the lever.

The operation will be described with reference to FIG. 4 in the above-mentioned configuration. The user places the tableware 2 in the tableware basket 11 and stores it in the washing tank 1, puts the detergent therein, and then executes step 20.
When the end time is set to be reserved and is started in step 21, if the door 10 is closed in step 21, the drainage pump 14 is driven in step 22 to discharge the residual water out of the cleaning tank 1. Next, in step 23, a predetermined amount of tap water is supplied into the cleaning tank 1 until the water level switch 6 detects a predetermined water level. Then, in step 24, the motor 5 is energized, and the washing water is jetted from the washing nozzle 3 toward the dishes 2 by the washing pump 4. After a lapse of a predetermined time from the start of stirring, in step 25, the control means 12 finishes the stirring process and once drains the wash water.

Next, in steps 26 and 27, the time required to execute the cleaning, rinsing, and drying program sequence selected by the user and the margin time are calculated, and the operation waits. Next, in step 28, water is supplied into the cleaning tank 1 until the water level switch 6 detects the water level. In step 29, the motor 5 and the heater 7 are energized, and the wash water is jetted from the wash nozzle 3 toward the dishes 2 by the wash pump 4 while being heated. At this time, the temperature of the wash water is detected by the thermistor 8, and the control means 12 always grasps the temperature of the wash water. When the temperature of the cleaning water reaches a predetermined temperature and a predetermined time has elapsed from the start of cleaning, the cleaning process is terminated and the cleaning water is once drained.

Next, in step 30, the above-described water supply, stirring, and drainage rinsing steps are repeated several times, and then step 3
The same operation as the washing step called the heat rinsing step in 1 is performed, and when the temperature reaches a predetermined temperature, the operation is ended and the water is drained in step 32. Finally, in step 33, the blower fan 9 is operated to discharge the steam in the cleaning tank 1 to the outside of the machine, and at the same time, the heater 7 is intermittently energized to heat the tableware 2 and dry the attached water droplets. .

Further, when the door 10 is opened in step 21 when starting after the reservation is set, the door detection means 15 detects it, and in step 34, the control means 12 gives an abnormality notification.

[0010]

In such a conventional dishwasher, when a reservation is started, after the pre-washing step (the step of operating the washing means to reduce the stains on the dishes), the main washing step is waited. If you add tableware in
There is a problem that dirt sticks, and during standby after the pre-washing process, there is no detection of the opening / closing of the door, so even if the door 10 is not closed, it will not be abnormal and it will not operate in the main-washing process. Had a problem.

Further, if dirty cleaning water is stored at the bottom during the standby after the pre-washing process, there is a problem that the odor is muddy and the dirt adheres to the cleaning tank 1 and the like, and re-adhesion occurs.

Further, in winter, the temperature of the washing water is low, which causes a problem that dirt is difficult to remove.

SUMMARY OF THE INVENTION The first object of the present invention is to solve the above problems and to notify an abnormality according to the open / closed state of a door or to operate a cleaning means or a drainage pump to reduce dirt.

A second purpose is to prevent the user from forgetting to close the door by notifying him / her of the abnormality when the door is opened for a predetermined time or longer.

A third object of the present invention is to reduce the stain by adding the tableware to the table when the table is added while the reservation is on standby, and stirring the tableware up to the specified number of times to sprinkle the tableware with water.

Further, when the door is open for a long time, the fourth object is to clear the number of times of opening and closing once and pour water on the tableware to prevent it from drying.

When the door has been closed for a predetermined time, it is determined that the tableware will not be added so much that the odor caused by draining and storing dirty cleaning water at the bottom,
Alternatively, the fifth object is to prevent redeposition of dirt.

When the number of times the door is opened and closed exceeds the predetermined number, the amount of dishes is small, and since the cleaning water is extremely dirty, it is drained and the dirty cleaning water is stored at the bottom. A sixth object is to prevent reattachment of odor or dirt.

A seventh object is to stop the detection of the opening / closing of the door in order to open the door when the door is opened for a short time in order to check the tableware when the door is opened for a short time.

Further, even if the temperature of the washing water is low, such as in the winter, the eighth object is to make it easier to remove dirt by heating the water at the temperature at the start after setting the reservation and then putting it on the dishes. .

[0021]

In order to achieve the first object, the present invention provides a cleaning means for stirring cleaning water in a cleaning tank, a water supply means for supplying water into the cleaning tank, and Water level detection means for detecting the water level in the cleaning tank, drainage means for draining the cleaning water in the cleaning tank, cleaning means for the dishes, rinsing, control means for controlling a series of sequential operations of the drying process,
A door detection unit that detects the open / closed state of the door, and a notification unit that notifies an abnormality, the control unit, according to the door opening time or the number of times of opening and closing of the door detected by the door detection unit during standby for reservation, The first means for solving the problem is to operate either the cleaning means, the drainage means, or the notification means.

Further, in order to achieve the second object, the control means is configured to give an abnormality notification when the door opening time detected by the door detecting means during reservation standby exceeds a preset predetermined time. This is the second means for solving the problem.

In order to achieve the third object, the control means operates the washing means until the number of times of opening and closing the door detected by the door detecting means at the time of reservation waiting is a predetermined number of times to apply water to the dishes. Is the third means for solving the problem.

Further, in order to achieve the fourth object, the control means sets the open / close detection count to 1 when the door opening time detected by the door detection means during the reservation standby exceeds a predetermined time.
The fourth problem solving means is that the cleaning means is operated after being cleared.

Further, in order to achieve the fifth object, the fifth means for solving the problem is that the control means drains the water after a predetermined time elapses after the door is closed during the reservation standby.

Further, in order to achieve the sixth object, the control means drains the water when the number of times of opening and closing the door detected by the door detecting means during the reservation standby exceeds a predetermined number. Is used as a means for solving the problem.

Further, in order to achieve the seventh object, the control means ignores the opening and closing of the door when the door opening time detected by the door detecting means during the reservation standby is within a predetermined time. This is the seventh means for solving the problem.

Further, in order to achieve the eighth object, in addition to the means for solving the first problem, a heater for heating the washing water and a temperature detecting means for detecting the temperature of the washing water are provided,
An eighth problem solving means is that the control means, when the temperature detected by the temperature detection means at the time of water supply at the start of the reservation is equal to or lower than a predetermined temperature, heats the water and then operates the cleaning means. .

[0029]

According to the first means for solving the above problems, the present invention provides:
Abnormality can be notified according to the open / closed state of the door, and the cleaning means and the drainage means can be operated to improve the cleaning performance of tableware.

Further, according to the second means for solving the problem, when the door is opened for a predetermined time or more, it is possible to notify the user of the abnormality and to prevent the user from forgetting to close the door.

Further, by the third means for solving the problem, each time the door is opened, water is applied to the tableware up to a predetermined number of times when the tableware is considered to be added, and the dishes are cleaned to improve the cleaning performance. .

Further, according to the fourth means for solving the problems, when the door is opened for a long time beyond the predetermined time, the dirt attached to the tableware dries and becomes hard to be removed. It is possible to prevent water from drying by sprinkling water on the item and improving the cleaning performance.

Further, according to the fifth means for solving the problems, it is judged that the tableware is not added after a predetermined time has passed since the door was closed, and the water containing the dirt in the washing tank is drained, so that the dirt becomes the tableware. It is possible to prevent reattachment and prevent deterioration of cleaning performance.

Further, according to the sixth means for solving the problems, it is judged that the tableware is not added when the number of times of opening and closing the door exceeds the predetermined number, and in this case, the cleaning water is extremely dirty, so that the inside of the cleaning tank is It is possible to drain water containing dirt, prevent dirt from reattaching to dishes, and prevent deterioration of cleaning performance.

According to the seventh means for solving the problems, when the door opening time is within the predetermined time, it is determined that the tableware is checked or the door is opened by mistake, and the extra operation in this case is removed. You can

Further, according to the eighth means for solving the problems, when the water temperature is low such as in winter, the water is heated to pour hot water onto the tableware, so that the cleaning performance can be improved.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the control means 16 controls a series of sequential operations of washing, rinsing, and drying processes of the dishes 2 and sets and controls reserved operation. A cleaning pump (cleaning means) according to the opening time or the number of times of opening and closing of the door 10 detected by
4, either the drainage pump (drainage means) 14 or the notification means 17 is operated.

The operation of the above structure will be described with reference to FIG. In addition, cleaning, rinsing by the control means 16,
Since a series of sequential operations in the drying process is the same as the conventional example, description thereof will be omitted, and only reservation will be described.

When the reserved time is set and started in step 20, if the door 10 is open in step 21, an abnormality is notified in step 34.

Next, in step 35, the thermistor 8 determines whether the water temperature is 5 ° C. or higher (predetermined temperature), and the drainage pump 14 is operated for the time determined in step 22 to drain the water. After supplying water by operating the water supply valve 13 up to the cleaning water level, in step 36, the water temperature is 5 ° C.
If it is above, proceed directly to step 24, and the water temperature is 5 ° C.
If less, the heater 7 is operated in step 37 to heat the wash water, and then the wash pump 4 is operated in step 24 to stir the wash water to remove dirt even at low water temperature in winter. You can make it easier.

Next, while waiting for the time set by the user in step 38, in step 39 the door 1
The number of opening / closing times of 0, the door opening time, and the door closing time are detected. Explaining this point in detail, if it is detected in step 40 that the door 10 is closed to open, step 41 returns No.
= No + 1, the number of times is counted, the timer is cleared in step 42, and the opening time of the door 10 is measured. Further, if it is detected in step 43 that the door 10 is open or closed, in step 44 the number of times is counted with Nc = Nc + 1, and in step 55.
The timer is cleared with and the time when the door 10 is closed is measured.

If the door 10 is opened in step 39,
If the number of times the door 10 is closed in step 46 exceeds four times (predetermined number), it is assumed that the tableware 2 is rarely added, and draining is performed in step 25, and an odor is generated due to residual water during standby for reservation. It is possible to prevent the deterioration of the cleaning performance due to redeposition of stains on the tableware 2.

Next, if the door opening time is less than 10 seconds in steps 47 and 48, the door 10 may be opened by mistake or the tableware 2 may be checked, and the dirty tableware 2 is added. If it is determined that the door 10 is not open, the opening / closing of the door 10 is ignored, and if it is 10 seconds or more and less than 10 minutes, step 3
It is possible to count the number of times the door 10 is opened and closed at 9, check the water level at step 49, add if the water level is low, stir the wash water at step 50, and water the dishes 2 to reduce dirt. .

Next, in step 48, if the opening time of the door 10 is 10 minutes (predetermined time) or more, either the lever of the door 10 is forgotten to be tightened or the door 10 is opened. In this case, the step At 51, a door open abnormality can be notified by a display and a buzzer to notify the user.

Next, if the door 10 remains open in step 52, the abnormality notification is continued. If the door 10 is closed, the abnormality is released in step 53, and the door 10 is operated for a long time in step 54. , Since it is open, the dirt on the tableware 2 dries and it becomes difficult to remove it. Therefore, the number of times of opening and closing the door can be cleared once, and water can be applied to the tableware 2 in step 50 to prevent it from drying.

Next, 10 minutes after the door 10 is closed in step 55, it is judged that the tableware 2 is not added at that time, and the washing water is drained in step 25,
It is possible to prevent generation of odor due to residual water during standby for reservation, and to prevent deterioration of cleaning performance due to redeposition of stains on the tableware 2.

Next, at step 27, after the waiting time is over, the process goes to the next step at step 56 to wash, rinse,
Drying is performed and a series of courses is completed.

Although the time and the number of times are concretely shown in the above embodiment, the numerical values are not limited.

[0050]

As is apparent from the above embodiments, according to the present invention, cleaning means for stirring the cleaning water in the cleaning tank, water supply means for supplying water into the cleaning tank, and the cleaning tank Water level detection means for detecting the water level of, the drainage means for draining the cleaning water in the cleaning tank, the control means for controlling a series of sequential operations of cleaning, rinsing and drying dishes, and the state of opening and closing the door A door detection unit for detecting the abnormality, and an informing unit for informing an abnormality, and the control unit determines the cleaning unit or the drainage unit according to the opening time or the number of times of opening / closing of the door detected by the door detection unit during standby for reservation. Alternatively, one of the notification means is operated, so that the door is opened according to the state of the door to prevent forgetting to close the door, and the cleaning means and drain pump are operated to wait for the reservation. Of tableware in time Les reduced, it is possible to improve the cleaning performance.

Further, the control means notifies the abnormality when the door opening time exceeds the preset predetermined time during the reservation standby. Therefore, when the door is opened for the predetermined time or longer, the abnormality notification is issued. The user can be informed that the door is open, and it is possible to prevent forgetting to close the door.

Further, the control means operates the washing means until the number of times of opening and closing of the door detected by the door detecting means during the reservation waiting time is a predetermined number of times so as to pour water on the dishes, so that the dishes are added during the reservation waiting. At this time, the cleaning performance can be improved by stirring the tableware up to the specified number of times and sprinkling water on the dishes to remove dirt.

When the door opening time detected by the door detecting means during the reservation standby exceeds the predetermined time, the control means clears the open / closed detection count once to operate the cleaning means. If it is opened for more than the predetermined time, the dirt will dry faster. Therefore, you can clear the number of times the door has been opened and closed, operate the cleaning means, and wash the dishes with water to prevent the dirt from drying out. it can.

Further, since the control means drains the water after the predetermined time has elapsed after the door is closed during the reservation standby, when the time when the door is closed exceeds the predetermined time,
It is possible to prevent the odor or reattachment of stains due to the fact that it is judged that the amount of tableware to be added is small and drained, and dirty cleaning water is stored at the bottom.

Further, the control means drains the water when the number of times of opening and closing the door detected by the door detecting means during the reservation standby exceeds the predetermined number of times. Therefore, when the number of times of opening and closing the door exceeds the predetermined number of times, the tableware It is judged that no additional substances have been added, and in this case, the cleaning water is extremely dirty, so it is possible to prevent odor or reattachment of dirt by draining and collecting dirty cleaning water at the bottom. .

Further, the control means ignores the opening and closing of the door when the opening time of the door is within the predetermined time at the time of waiting for reservation. Therefore, when the opening time of the door is within the predetermined time, the door is erroneously opened. In some cases, such as when opening or checking the dishes, it is possible to ignore the opening and closing of the door and prevent extra movement.

Further, a heater for heating the washing water and a temperature detecting means for detecting the temperature of the washing water are provided, and the control means, when the temperature detected by the temperature detecting means at the time of water supply at the start of reservation is equal to or lower than a predetermined temperature. Since the cleaning means is activated after heating the water in the room, even if the temperature of the cleaning water is low, such as during winter, the water should be heated to the temperature at the start after the reservation setting and then hung on the dishes to be cleaned. Can be easily dropped.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a dishwasher according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a process of making a reservation for the dishwasher.

[Fig. 3] System configuration diagram of a conventional dishwasher

FIG. 4 is a flow chart showing the progress of the program sequence of the dishwasher.

[Explanation of symbols]

 1 Cleaning Tank 2 Tableware 3 Cleaning Nozzle (Cleaning Means) 4 Cleaning Pump (Cleaning Means) 6 Water Level Switch (Water Level Detection Means) 10 Door 13 Water Supply Valve (Water Supply Means) 14 Drainage Pump (Drainage Means) 15 Door Detection Means 16 Control Means 17 Notification means

 ─────────────────────────────────────────────────── (72) Inventor Wataru Hamaguchi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Takashi Komatsu 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (8)

[Claims] 1. A cleaning means for stirring the cleaning water in the cleaning tank, a water supply means for supplying water into the cleaning tank, a water level detecting means for detecting the water level in the cleaning tank, and Drainage means for draining wash water, washing and rinsing dishes,
A control means for controlling a series of sequential operations in the drying process, a door detection means for detecting the open / closed state of the door, and a notification means for notifying an abnormality are provided, and the control means is provided by the door detection means during standby for reservation. A dishwasher in which any one of the cleaning unit, the drainage unit, and the notification unit is operated according to the detected opening time of the door or the number of times of opening and closing. 2. The dishwasher according to claim 1, wherein the control means issues an abnormality notification when the door opening time detected by the door detection means during a reservation standby exceeds a preset predetermined time. 3. The dishwasher according to claim 1, wherein the control means operates the washing means until the number of times of opening / closing of the door detected by the door detecting means during the reservation standby time is a predetermined number of times to pour water on the dishes. 4. The control means, when the door opening time detected by the door detection means during a reservation standby exceeds a predetermined time, clears the number of open / closed detections once and operates the cleaning means. The listed dishwasher. 5. The control means drains the water after a predetermined time has passed since the door was closed during reservation reservation.
The listed dishwasher. 6. The dishwasher according to claim 1, wherein the control means drains the water when the number of times of opening and closing the door detected by the door detecting means during a standby for a reservation exceeds a predetermined number. 7. The dishwasher according to claim 1, wherein the control means ignores the opening and closing of the door when the opening time of the door detected by the door detection means during the reservation standby is within a predetermined time. 8. A heater for heating the washing water and a temperature detecting means for detecting the temperature of the washing water are provided, and the control means has a temperature detected by the temperature detecting means at the time of water supply at the time of reservation start being equal to or lower than a predetermined temperature. In this case, the dishwasher according to claim 1, wherein the washing means is operated after heating the water.