JP2000300501A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To always carry out rinsing operation at a proper temperature by a method wherein washing operation is extended when the temperature of rinsing water is below a prescribed value during the washing operation and the rinsing operation is performed when it reaches the prescribed temperature. SOLUTION: When dishes are placed into a washing chamber and a start switch 34 of an input/output display device is turned ON, a microcomputer 17 operates a washing water pump 5 with a washing water pump control part 23 to jet washing water for washing. The washing operation time is set to about 80-100 sec. Further, the temperature of rinsing water in a rinsing water tank is detected by a rinsing temperature sensor 20 and when the temperature is below a set rinsing temperature, the washing operation time is extended. When a set washing temperature is reached, a dish washing device is suspended for about 4-5 sec. and then, a rinsing pump 9 is operated through a rinsing water pump control part 25 to jet rinsing water thereby performing a rinsing operation for about 5-15 sec. as preset. By this constitution, concern for misjudging to be a trouble is eliminated and accidental extension of the suspension time is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a commercial or household dishwashing apparatus for cleaning and rinsing tableware.

[0002]

2. Description of the Related Art In a conventional dishwashing apparatus for business use, first, a hot water supply operation for storing, for example, 60 ° C. wash water from a rinse water tank to a wash water tank is performed (step S100). Next, a cleaning standby state is set (step S1).
01) During this time, the user introduces tableware into the washing room.
Thereafter, a washing operation is performed in which washing water in the washing water tank is sprayed from the washing water nozzle into the washing room to wash dishes in the washing room (step S102).

[0003] After the washing operation is completed, the dishwashing apparatus is paused for a predetermined time (step S103), and then a rinsing operation is performed. (Step S104). This rinsing operation
Rinse the rinse water from the rinse water tank through the rinse water nozzle into the wash chamber and rinse the washed dishes. After the end of the rinsing operation, the dishes are dried with the residual heat of the high-temperature (about 80 ° C.) rinsing water, and then an end buzzer is output (step S105), and the washing of the dishes is ended.

[0004]

However, in the conventional dishwashing apparatus, even if the temperature of the rinsing water in the rinsing water tank is low, the rinsing operation is performed as it is. As a result, there was a problem that the tableware after rinsing became unsanitary.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a dishwashing apparatus capable of always performing a rinsing operation with a proper temperature of rinsing water.

[0006]

According to a first aspect of the present invention, there is provided a dishwashing apparatus in which a washing operation for washing dishes and a rinsing operation for washing the dishes are sequentially performed. If the temperature does not reach the specified temperature, extend the washing operation, perform the rinsing operation when the rinsing water temperature reaches the specified temperature, and do not perform the rinsing operation when the rinsing water temperature is low. I have.

According to a second aspect of the present invention, in a dishwashing apparatus in which a washing operation for washing dishes and a rinsing operation for rinsing dishes after washing are sequentially performed, a temperature of a rinsing water is detected before the start of the washing operation. An alarm is output when the detected rinse water temperature is lower than a specified temperature, and the cleaning operation is extended, and when the rinse water temperature reaches a specified temperature, the rinse operation is performed, and the cleaning operation is normally performed. By outputting an alarm even if the cleaning operation lasts longer, it is possible to notify that the temperature of the rinsing water is low, it is possible to notify that the cleaning operation is not a failure that has not stopped, and it is possible to prevent rinsing failure.

According to a third aspect of the present invention, in a dishwashing apparatus in which a washing operation for washing dishes and a rinsing operation for rinsing dishes after washing are sequentially performed, a temperature of a rinse water is detected before the start of the washing operation. When the detected rinse water temperature is lower than the reference temperature, an alarm is output, and the washing operation is not started until the rinse water temperature reaches the specified temperature, and the user is not operated by the washing operation. Anxiety is given by alerting that the temperature of the rinsing water is only low, notifying that the equipment is not out of order, and preventing poor rinsing.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a dishwasher of the present invention, FIG. 2 is a block diagram showing a control device of a dishwasher, FIG. 3 is a flowchart of a washing operation and a rinsing operation of the present invention, and FIG. It is a flowchart figure of an operation and a rinsing operation.

Reference numeral 1 denotes a dishwashing apparatus, which is provided with a washing room 2 for washing dishes, and a washing room 2 provided below the washing room.
A washing water tank 3 for storing washing water and a rinsing water tank 4 for storing rinsing water are arranged. A washing water tank heater to be described later is installed in the washing water tank 3, and the washing water is heated to about 60 ° C. and maintained. Further, a rinsing water tank heater described below is installed in the rinsing water tank 4, and the rinsing water is heated to about 80 ° C. and maintained.

A washing water pump 5 is provided near the washing water tank 3.
Is arranged. By the operation of the washing water pump, the washing water in the washing water tank 3 passes through the washing water conduit 6, and then into the washing room 2
The washing water is guided to washing water nozzles 7 and 8 arranged in a vertical direction in the inside, and is jetted from the washing water nozzle into the washing chamber 2.

A rinsing water pump 9 is arranged near the rinsing water tank 4. By the operation of the rinsing water pump, the rinsing water in the rinsing water tank 4 is jetted from the rinsing water nozzles 11 and 12 disposed above and below the washing chamber 2 through the rinsing water conduit 10.

Wash water nozzles 7, 8 and rinse water nozzle 1
1 and 12 are provided to be rotatable in the horizontal direction. When the washing water is sprayed from the washing water nozzles 7 and 8 and the rinse water nozzle 1
At the time of rinsing the rinsing water from 1 and 12, the washing water nozzle and the rinsing water nozzle rotate, whereby the dishes placed on the shelf (not shown) in the washing chamber 2 are washed well. Soot

A collecting pan 13 is provided below the washing room 2. The water collecting pan includes washing water jetted from washing water nozzles 7 and 8 to wash dishes, and a rinsing water nozzle 1.
The rinsing water which is sprayed from 1 and 12 to rinse the dishes is collected and introduced into the washing water tank 3. Further, the dishwashing apparatus 1 is provided with a loading / unloading port for tableware that opens the washing chamber 2 to the outside, and the loading / unloading port is opened and closed by a door 14. Reference numeral 15 denotes an overflow pipe.

The dishwashing apparatus 1 is provided with a control device 16 for controlling a washing operation, a rinsing operation and the like. The control device includes a microcomputer 17, an input / output display 18, a washing water temperature sensor 19, and a rinsing water temperature sensor 2.
0, a door switch 21, a float switch 22, a flush water pump control unit 23, a flush water tank heater control unit 24, a rinse water pump control unit 25, a rinse water tank heater control unit 26, and a hot water supply valve control unit 27. Have been.

The input / output display 18 has a start switch, a setting switch for setting the time of the washing operation or the rinsing operation, and setting the temperature of the washing water or the rinsing water.
A display for displaying setting data. The washing water temperature sensor 19 is provided in the washing water tank 3 and detects the temperature of the washing water. Also, the rinsing water temperature sensor 20
Is provided in the rinse water tank 4 and detects the temperature of the rinse water. The door switch 21 is turned on when the door 14 is closed, and the float switch 22 is provided in the rinsing water tank 4 and is turned on when the water level is higher than a certain level.

The microcomputer 17 instructs the cleaning pump control unit 23 at the start of the cleaning operation, and sets the cleaning water pump 5 for the cleaning operation set time set on the input / output display 18.
Is operated to perform the cleaning operation. The microcomputer 17 controls the rinsing water pump controller 25 at the start of the rinsing operation.
To operate the rinsing water pump 9 for the rinsing operation set time set on the input / output display 18 to perform the rinsing operation.

The microcomputer 17 compares the output of the washing water temperature sensor 19 with the washing water set temperature previously set and stored on the input / output display 18 and sends the washing water tank heater control section 24 the washing water. ON of the tank heater 28,
Command OFF to control the temperature of washing water. The microcomputer 17 compares the output of the rinsing water temperature sensor 20 with the rinsing water set temperature previously set and stored on the input / output display 18 and sends the rinsing water tank heater control unit 25 with the rinsing water tank. Command the ON / OFF of the heater 29 to control the temperature of the rinse water. Further, when the water level in the rinsing water tank 4 is lowered by the float switch 22, the microcomputer 17 instructs the hot water supply valve control unit 27 to open the hot water supply valve 30 to supply hot water into the rinsing water tank 4.

Further, the input / output display 18 has an end buzzer 3
1 is installed, a warning buzzer 32 and a warning light 33
Is installed. After a predetermined time has elapsed after the completion of the cleaning operation and the rinsing operation, the microcomputer 17
The end buzzer 31 sounds to notify the end of the washing of the tableware.

The microcomputer 17 is provided with an input / output indicator 18 in a washing standby state described later before the start of the washing operation.
When the start switch 34 is turned on, the rinsing water temperature in the rinsing water tank 4 detected by the rinsing water temperature sensor 20 is fetched, and the detected rinsing water temperature is set as the specified rinsing water temperature (about 80 ° C.). ), The warning buzzer 32 sounds and the warning light 33 is turned on.
By increasing the temperature of the rinsing water, the washing operation and the rinsing operation are sequentially performed thereafter.

Next, main washing and rinsing operations of the dishwashing apparatus 1 by the microcomputer 17 will be described.

When the power is turned on as shown in FIG. 3, the microcomputer 17 performs a hot water supply operation (step S1). In this hot water supply operation, the microcomputer 1
Reference numeral 7 denotes a rinsing water pump control unit 25 for operating the rinsing water pump 9 to spray the rinsing water in the rinsing water tank 4 from the rinsing water nozzles 11 and 12 and store the rinsing water in the washing water tank 3 via the water collecting pan 13. I do.

After the hot water supply operation is completed, the microcomputer 17 puts the dishwashing apparatus 1 in a washing standby state (step S2). During this time, the door 14 is opened by the user of the dishwashing apparatus 1, the tableware is carried into the shelf in the washing room 2, the door 14 is closed, and the start switch 34 of the input / output display 18 is turned ON by the user. (Step S3), the microcomputer 17 operates the cleaning water pump 5 by the cleaning water pump control unit 23, and cleans the cleaning water in the cleaning water tank 3 while rotating the cleaning water nozzles 7, 8 in the horizontal direction. Water is sprayed from the water nozzles 7 and 8 into the washing chamber 2 to wash dishes in the washing chamber (step S).
4). The microcomputer 17 performs this cleaning operation,
A preset cleaning operation time of 80 to 100 seconds is performed.

After the cleaning operation is started, the temperature of the rinsing water in the rinsing water tank 4 is detected by the rinsing water temperature sensor 20, and the detected rinsing water temperature is compared with the set rinsing water temperature (step). S5).

In step S5, if the rinse water detection temperature is lower than the rinse water set temperature, the microcomputer 17 extends the cleaning operation time after the elapse of the cleaning time (step S6). When the rinsing water detection temperature has reached the set temperature, the dishwasher 1 is paused for 4 to 5 seconds (step S7).

After this pause, the microcomputer 17
Operates the rinsing water pump 9 via the rinsing water pump control unit 25 and cleans the rinsing water in the rinsing water tank 4 from the rinsing water nozzles 11 and 12 while rotating the rinsing water nozzles 11 and 12 in the horizontal direction. By spraying into the chamber 2, the dishes to which the cleaning water adheres are rinsed in the cleaning chamber (step S8). The microcomputer 17 performs the rinsing operation for a preset rinsing operation setting time of 5 to 15 seconds.

The microcomputer 17 sounds the end buzzer 31 for 5 seconds after the end of the rinsing operation to inform the user that washing and rinsing of the dishes have been completed (step S9). During this time, the tableware after the rinsing is dried by the high-temperature residual heat of the rinsing water, and then is carried out of the washing room 2 by the user. After the end of step S9, the microcomputer 17 puts the dishwashing apparatus 1 in a washing standby state of step S2.

According to the present invention, when the rinsing water temperature detected by the rinsing water temperature sensor 20 during the rinsing operation is lower than the rinsing water set temperature, the rinsing operation is extended to reduce the downtime between the rinsing operation and the rinsing operation. The length is not lengthened so that the user does not have the illusion of a malfunction, and the downtime after the cleaning operation is lengthened to prevent the detergent from drying out and becoming difficult to drop.

FIG. 4 is a flowchart showing the washing / rinsing operation performed by the control measures in the dishwashing apparatus according to the second embodiment of the present invention.

When the power is turned on as shown in FIG. 4, the microcomputer 17 performs a hot water supply operation (step S20). In this hot water supply operation, the microcomputer 17 operates the rinsing water pump 9 via the rinsing water pump control unit 25, injects the rinsing water in the rinsing water tank 4 from the rinsing water nozzles 11 and 12, and collects the water in the collecting pan 13 And stored in the washing water tank 3.

After finishing the hot water supply operation, the microcomputer 17 puts the dishwashing apparatus 1 in a washing standby state (step S21). During this time, the door 14 is opened by the user of the dishwashing apparatus 1, the tableware is carried into the shelf in the washing room 2, the door 14 is closed, and the start switch 34 of the input / output display 18 is turned ON by the user. (Step S22), the microcomputer 17 detects the temperature of the rinse water in the rinse water tank 4 with the rinse water temperature sensor 20, and compares the detected rinse water temperature with the first rinse water set temperature. (Step S23).

In this step S23, when the rinse water detection temperature is lower than the first rinse water set temperature, the warning buzzer 32 of the input / output display 18 sounds and the warning light 33
Is turned on to warn the user that the rinse water temperature is lower than the first rinse water set temperature, and the rinse water tank heater 29 is turned on by the rinse water tank heater control unit 26.
N, and the rinse water is heated (step S24). Then, the temperature of the rinse water is detected until the temperature of the rinse water reaches the first set temperature of the rinse water (step S25). When the rinse water temperature reaches the first rinse water set temperature, step S
Returning to the operation of step 22, the start switch 34 is turned on by the user, and in step S23, the rinse water temperature is detected again and the washing operation is performed.

The microcomputer 17 operates the washing water pump 5 via the washing water pump control unit 23, and rotates the washing water nozzles 7 and 8 in the horizontal direction, while washing the washing water in the washing water tank 3 with the washing water nozzle. The dishes are sprayed into the washing chamber 2 from 7 and 8 to wash the dishes in the washing chamber (step S26). The microcomputer 17 performs this cleaning operation for a preset cleaning operation setting time of 80 to 100 seconds.

After the washing operation is started, the temperature of the rinsing water in the rinsing water tank 4 is detected by the rinsing water temperature sensor 20, and the detected rinsing water temperature is compared with the second set rinsing water temperature. (Step S27).

In step S27, when the rinse water detection temperature is lower than the second rinse water set temperature, the microcomputer 17 extends the cleaning operation time (step S28). In the meantime, the rinsing water tank heater 29 is turned on by the rinsing water tank heater control unit 26, and while the rinsing water is being heated, the rinsing water temperature is detected until the rinsing water temperature reaches the second rinsing water set temperature (step S27). Then, when the rinse water detection temperature has reached the second rinse water set temperature, the dishwasher 1 is paused for 4 to 5 seconds (step S29).

After this pause, the microcomputer 17
Operates the rinsing water pump 9 via the rinsing water pump control unit 25 and cleans the rinsing water in the rinsing water tank 4 from the rinsing water nozzles 11 and 12 while rotating the rinsing water nozzles 11 and 12 in the horizontal direction. By spraying into the chamber 2, the dishes to which the cleaning water adheres are rinsed in the cleaning chamber (step S30). The microcomputer 17 performs the rinsing operation for a preset rinsing operation setting time of 5 to 15 seconds.

The microcomputer 17 sounds the end buzzer 31 for 5 seconds after the end of the rinsing operation to inform the user that washing and rinsing of the dishes have been completed (step S31). During this time, the tableware after the rinsing is dried by the high-temperature residual heat of the rinsing water, and then is carried out of the washing room 2 by the user. After step S32, the microcomputer 17 sets the dishwashing apparatus 1 in a washing standby state in step S21.

According to the present invention, when the rinse water temperature detected by the rinse water temperature sensor 20 in the washing standby state is lower than the set rinse water temperature, an alarm is issued to suspend the washing operation and the temperature of the rinse water is reduced. The washing operation is started when the rinsing water temperature reaches the first rinsing water set temperature after waiting for the temperature to rise, and the user is notified that the washing operation is waiting, and the extended time of the washing operation is extremely long. I try not to be long.

[0039]

According to the first aspect of the present invention, in a dishwashing apparatus in which a washing operation for washing dishes and a rinsing operation for washing the dishes are sequentially performed, the rinsing water temperature during the washing operation is reduced. When the temperature does not reach the specified temperature, the washing operation is extended, and when the temperature of the rinsing water reaches the specified temperature, the rinsing operation is performed. Therefore, the rinsing operation can be prevented from being performed when the temperature of the rinsing water is low.

According to the second aspect of the present invention, in the dishwashing apparatus in which the washing operation for washing the dishes and the rinsing operation for the washed dishes are sequentially performed, the temperature of the rinsing water is adjusted before the start of the washing operation. Detecting and outputting an alarm when the detected rinsing water temperature is lower than a specified temperature, and extending the washing operation, and performing the rinsing operation when the rinsing water temperature reaches a specified temperature. An alarm is output even if the operation lasts longer than normal, so that the user can be notified that the rinsing water temperature is low, and that the user can be notified that the cleaning operation is not stopped and has not stopped. , Can prevent poor rinsing.

According to a third aspect of the present invention, in the dishwashing apparatus in which the washing operation for washing the dishes and the rinsing operation for the washed dishes are sequentially performed, the rinsing water temperature is reduced before the washing operation is started. When the detected rinsing water temperature is lower than the reference temperature, an alarm is output, and the cleaning operation is not started until the rinsing water temperature reaches the specified temperature. The user can be notified of the fact that the temperature of the rinsing water is low only by notifying the user that the temperature of the rinsing water is low, notifying the user that the device is not at fault, and also preventing poor rinsing.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a dishwasher according to the present invention.

FIG. 2 is a block diagram showing a control device of the dishwashing apparatus of the present invention.

FIG. 3 is a flowchart of a cleaning operation and a rinsing operation of the present invention.

FIG. 4 is a flowchart of a cleaning operation and a rinsing operation of the present invention.

FIG. 5 is a flowchart of a conventional cleaning operation and a rinsing operation.

[Explanation of symbols]

 1 dishwashing device 16 control device 32 warning buzzer 33 warning light

Claims (3)

[Claims] 1. A dishwashing apparatus in which a washing operation for washing dishes and a rinsing operation for rinsing dishes after washing are sequentially performed, wherein when the rinsing water temperature does not reach a specified temperature during the washing operation, the washing is performed. A dishwasher, wherein the operation is extended and the rinsing operation is performed when the rinsing water temperature reaches a specified temperature. 2. A dishwashing apparatus in which a washing operation for washing dishes and a rinsing operation for rinsing dishes after washing are sequentially performed, a rinsing water temperature is detected before starting the washing operation, and the detected rinsing water temperature is detected. Is lower than a specified temperature, an alarm is output, and the washing operation is extended, and when the rinse water temperature reaches a specified temperature, the rinsing operation is performed. Dishwashing equipment. 3. A dishwashing apparatus in which a washing operation for washing dishes and a rinsing operation for rinsing dishes after washing are sequentially performed, a rinsing water temperature is detected before the washing operation is started, and the detected rinsing water temperature is detected. An alarm is output when the temperature is lower than a reference temperature, and the washing operation is not started until the rinse water temperature reaches a specified temperature.