JP2000185008A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent troubles resulting from a runout in detergent by determining in advance the residual amount of detergent in a detergent feeder. SOLUTION: This dishwasher 1 washes dishes and the like stored in a washing chamber 3, by ejecting wash water thereto, the dishwasher 1 including a detergent feeder for injecting a detergent into the wash water and a control device for controlling washing operations, with the control device causing the detergent feeder to inject a predetermined amount of detergent for each washing operation and integrating the number of times of washing operations for display on a display.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for washing washing water by spraying washing water onto dishes in a washing room.

[0002]

2. Description of the Related Art Conventionally, automatic dishwashers installed in hotels, restaurants, cafeterias, and the like have been used, for example, in Japan.
As shown in JP-A-16658 (A47L15 / 42), a washing nozzle and a rinsing nozzle are arranged above and below a washing chamber, and in a washing process, washing water stored in a washing tank is supplied to the washing nozzle by a washing pump. In addition to washing the tableware stored in the washing room to wash dirt attached to the tableware, in the subsequent rinsing step, rinse water is supplied to the rinse nozzle by a rinse pump from a rinse tank storing the rinse water and sprayed. As a result, a method of rinsing washing water attached to tableware is adopted.

[0003] In this case, the dishwasher is provided with a detergent supply device, and every time a washing process is performed, a predetermined amount of detergent is put into the washing water in the washing tank.

[0004]

There are various types of detergents, such as liquid ones and powdery ones, and in any case, the detergents decrease each time the washing operation is performed. Then, the detergent is used up after a predetermined number of operations. However, conventionally, a method is employed in which the user replenishes the detergent in the detergent supply device when the detergent is found to be empty. After that, incomplete cleaning in a detergent-deficient state is performed until the user notices.

[0005] In addition, even if it is determined that the detergent in the detergent supply device has been emptied, if the detergent to be replenished is not at hand, there is a problem that the cleaning operation cannot be performed until the detergent is delivered by a service person. there were.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problem, and is provided with a dishwasher capable of grasping in advance the remaining amount of a detergent in a detergent supply device and avoiding a disadvantage caused by running out of the detergent. Is provided.

[0007]

According to a first aspect of the present invention, there is provided a dishwasher for spraying washing water onto dishes and the like housed in a washing room, wherein the detergent is poured into the washing water. A supply device and a control device for controlling the cleaning operation are provided. The control device supplies a predetermined amount of detergent by the detergent supply device for each cleaning operation, and accumulates the number of times of the cleaning operation and displays the result on a display. It is characterized by.

According to the first aspect of the present invention, in a dishwasher for washing by spraying washing water onto dishes and the like housed in a washing room, a detergent supply device for charging a detergent into the washing water, and controlling a washing operation. The control device is configured to supply a predetermined amount of detergent by the detergent supply device for each washing operation, and to add up the number of washing operations and display the result on the display. The man can easily estimate the remaining amount of the detergent in the detergent supply device from the displayed number of cleaning operations.

As a result, it is possible to replenish the detergent to the detergent supply device before the detergent is exhausted, so that an incomplete cleaning operation may be performed due to running out of the detergent, or the cleaning operation itself may not be performed. Can be avoided beforehand.

[0010] A dishwasher according to a second aspect of the present invention is a dishwasher in which washing water is sprayed onto dishes and the like housed in a washing room for washing. The control device controls the number of cleaning operations by adding a predetermined amount of detergent by the detergent supply device every time the cleaning operation is performed, and notifies the outside when the predetermined number of cleaning operations is reached. It is characterized by doing.

According to a second aspect of the present invention, in a dishwasher for washing by spraying washing water onto dishes and the like housed in a washing room, a detergent supply device for charging a detergent into the washing water and controlling a washing operation. The control device is configured to supply a predetermined amount of detergent by the detergent supply device for each cleaning operation, accumulate the number of times of the cleaning operation, and notify the outside when the predetermined number of times is reached. Therefore, the user or the service person can know from the notification that the number of times the detergent in the detergent supply device has become empty is reached.

As a result, the detergent can be replenished to the detergent supply device before the detergent is exhausted, and an incomplete cleaning operation may be performed due to running out of the detergent, or the cleaning operation itself may not be performed. Can be avoided beforehand.

According to a third aspect of the present invention, there is provided a dishwasher for spraying washing water onto dishes and the like housed in a washing room for washing, a detergent supply device for introducing a detergent into the washing water, and a washing operation. And a sensor for detecting the remaining amount of detergent in the detergent supply device. The control device supplies a predetermined amount of detergent by the detergent supply device every washing operation, and based on the output of the sensor, When the remaining amount of the detergent in the supply device is reduced to a predetermined value, the detergent is notified to the outside.

According to a third aspect of the present invention, in a dishwasher for washing by spraying washing water onto dishes and the like housed in a washing room, a detergent supply device for charging a detergent into the washing water and controlling a washing operation. And a sensor for detecting the remaining amount of detergent in the detergent supply device. The control device supplies a predetermined amount of detergent by the detergent supply device every washing operation, and based on the output of the sensor, the detergent supply device. When the remaining amount of the detergent in the inside has decreased to a predetermined value, an alert is sent to the outside, so that the user or service person can quickly and accurately notify that the detergent in the detergent supply device is almost empty by notification. Be able to grasp.

As a result, the detergent can be replenished to the detergent supply device before the detergent is exhausted, so that an incomplete cleaning operation due to running out of the detergent or an inability to execute the cleaning operation itself occurs. Can be avoided beforehand.

A dishwasher according to a fourth aspect of the present invention is the second aspect.
Alternatively, the control device according to the third aspect is characterized in that the control device notifies the outside using a telephone line.

According to the fourth aspect of the present invention, in addition to the second aspect or the third aspect, the control device notifies the outside using a telephone line. The user can be notified of the decrease in the amount and urge replenishment / maintenance, thereby greatly improving the convenience for the user.

[0018]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a dishwasher 1 to which the present invention is applied.
, FIG. 2 is a front view of the dishwasher 1, FIG. 3 is a plan view of the washing room 3 of the dishwasher 1, FIG. 4 is a vertical front view of the washing room 3 of the dishwasher 1, and FIG. FIG. 3 is a wiring diagram of an electric system of the cleaning machine 1.

The dishwasher 1 of the embodiment is a so-called under-counter type automatic dishwasher installed in a kitchen such as a hotel, a restaurant, a cafeteria, and the like. Cleaning chamber 3 having opening 5
, And a machine room 4 is formed below the inner box 2.

A stainless steel top table (work table) 7 is provided above the top plate of the inner box 2 at intervals, and a stainless steel top table (work table) is also provided on the outside of the back plate 2B and the left and right side plates 2C and 2C. The exterior plates 8 are attached at a small interval.

The rear left portion of the inner box 2 facing the bottom plate 2D is continuous with a washing tank 9 opened on the upper surface. That is, the washing tank 9 is opened upward below the washing chamber 3, and the whole is located at the left rear part in the machine room 4.

On the other hand, a washing nozzle 11 and a rinsing nozzle 12 are rotatably mounted above and below the washing chamber 3, respectively. The front opening 5 of the cleaning room 3 is provided with a door 16.
To open and close. A control panel 15 is mounted on the upper side of the door 16 as shown in FIG. 1 (omitted in FIG. 2).

On the other hand, the side plates 2C, 2C located on the left and right sides of the lower edge of the front opening of the cleaning chamber 3
3, 23 are attached. The rack on which the tableware is placed is slidably mounted on the rack rails 23 from the front opening.

An overflow pipe 24 is set up in the washing tank 9 so as to be detachable. The upper end of the overflow pipe 24 is opened in the upper part of the washing tank 9, and the lower end of the overflow pipe 24 is a bottom plate (unit base) of the machine room 4 to be described later. ) Connected to a drain pipe (not shown) outside 4A. A pump filter 27 for preventing foreign matter from flowing into the cleaning pump 26 is attached to the inside of the front surface of the cleaning tank 9 so as to be able to be pulled out upward.

A notch 23A is formed in the rack rail 23 corresponding to the upper part of the pump filter 27, and the pump filter 27 can be pulled out through the notch 23A.

Next, the washing pump 26, the rinsing tank 36, and the rinsing pump 37 are installed in the machine room 4. The suction side of the cleaning pump 26 is fixed to the front surface of the cleaning tank 9 and communicates with the inside thereof. The pump filter 27 is attached to the suction port portion. Further, the cleaning tank 9 is heated by a cleaning heater 9A described later, and stores cleaning water at a predetermined temperature. The upper discharge side of the cleaning pump 26 is connected to the bottom plate 2.
D, which is fixed closely to the lower surface and communicates with the upper and lower cleaning nozzles 11 via a passage (not shown).

Tap water is introduced into the rinsing tank 36 from a pipe (not shown).
Rinsing water (warm water) at a predetermined temperature is stored by 6A, and the suction side of a rinsing pump 37 communicates with the rinsing tank. The discharge side of the rinsing pump 37 is connected to the upper and lower rinsing nozzles 1 via a passage (not shown).
It is connected to 2.

At the four corners of the bottom plate 4A, legs 39.
Is attached. Further, the front opening of the machine room 4 is closed by a machine room panel 38 which can be freely opened and closed. Further, a detergent tank 40 for storing a liquid detergent is provided in the machine room 4, and the detergent tank 40 is connected to a detergent supply pipe 44 via a peristaltic detergent pump 41, for example.

At the tip of the detergent supply pipe 44, a detergent input nozzle 42 is attached. This detergent injection nozzle 4
2 is attached to the bottom plate 2D of the inner box 2 on the left side near the opening 5 of the cleaning chamber 3. The detergent tank 40, the detergent pump 41, the detergent supply pipe 44, and the detergent injection nozzle 42 constitute a detergent supply device. The detergent pump 41 is operated every time the washing process is performed, and sends a predetermined amount of detergent from the detergent tank 40 to the detergent supply pipe 44 and throws the detergent into the washing tank 9 from the detergent injection nozzle 42.

Next, in FIG. 5, reference numeral 122 denotes a signal line for transmitting and receiving data. The control box 15 is connected to the signal line 122. The pumps of the cleaning pump 26, the rinsing pump 37, and the detergent pump 41, and the power supply boards 124 of the cleaning heater 9A and the rinsing heater 36A are connected to an AC power supply line (not shown).

The signal line 122 includes a chip-shaped storage device (memory chip) 125, a chip-shaped washing tank temperature sensor 127 as a sensor for detecting the temperature of the washing water in the washing tank 9, and a rinse tank 36. A chip-shaped rinsing tank temperature sensor 110 as a sensor for detecting the temperature of the rinsing water in the inside, a chip-shaped switching element 128 attached to the power supply board 124, respectively, and a switching element used as a detecting device as described later .. Are connected via connectors.

FIG. 6 shows the structure of the control box 15. The control box 15 is provided with a controller (substrate) 136 constituting a main control unit. The controller 136 includes a CPU (microcomputer) 131, a memory 132 as storage means,
An I / O interface 133 and a bus I / O interface 134 as transmission / reception means are provided. The control box 15 is provided with a display 137 constituted by a liquid crystal display panel, a switch 138 as input means (keyboard, mouse, etc.), a switch 139 as switching means, and the like. 137 and switch 138 are I / O interface 1
33 connected to an operation panel (not shown).

The bus I / O interface 1
Reference numeral 34 is connected to the signal line 122 via the switch 139, and exchanges data with the storage device 125, the temperature sensors 127 and 110, the switching elements 128... Via the signal line 122. The switch 139 is connected to an external laptop PC P (display / display) via a communication line 142.
An external control device including a keyboard and a mouse), a modem M connected to an external telephone line, and the like are connected.

The switch 139 always connects the bus I / O interface 134 to the signal line 122, but switches the bus I / O interface 134 (that is, the control box 15) according to an instruction from the controller 136 or the personal computer P. Disconnect from signal line 122 and
And the modem M, and connect the personal computer P to the signal line 12.
It works to connect to 2.

The controller 136 includes the temperature sensors 127 and 110, the switching elements 128,.
A predetermined communication protocol for performing data communication with the storage device 125 and the personal computer P, and each of the sensors 127 and 11 described later.
0, switching element 128, software for searching and identifying storage device 125, display 137
The display image data to be displayed is set.

Each of the temperature sensors 127,
110, switching element 128, storage device 125
And a predetermined communication protocol for performing data communication with the controller and the controller 136, and software for searching and identifying the sensors 127 and 110, the switching element 128, and the storage device 125 described later. I do.

Next, the washing tank temperature sensor 12
7. The configuration of the rinse tank temperature sensor 110 is shown in FIG. Since the sensors 127 and 110 have the same configuration, the cleaning tank temperature sensor 127 will be described below.
The cleaning tank temperature sensor 127 includes a CPU 143 as a sensor-side control unit and a memory 144 as a storage unit.
And an I / O interface 146 as transmission / reception means
, An A / D converter 147, a sensor unit 148 as a detection element connected to the A / D converter 147, a capacitor 149 as a power storage element, a diode 151 as a rectifying element, and the like. .

In this case, the capacitor 149 is connected to the output side of the diode 151, and each element is connected to a connection point between the diode 151 and the capacitor 149.
A potential (high potential) of, for example, +5 V is applied to the signal line 122, and data is composed of pulses that fall from this high potential to a low potential of 0 V, for example.

When the cleaning tank temperature sensor 127 is connected to the signal line 122, power is supplied to each element as long as the high-potential and low-potential pulse signals constituting data are at the high potential. The capacitor 149 is also charged. While the potential is low, the capacitor 149
, And the power of each element is covered.

The cleaning tank temperature sensor 127 has Vc
A c (DC + 5V) power supply terminal 145 is also provided, which is connected to a connection point between the diode 151 and the capacitor 149. The cleaning tank temperature sensor 127 connects the Vcc power supply terminal 145 to a power supply line, so that each element operates as a power supply. It is configured to be able to operate by power supply from a line. That is, in this case, each element operates without filling the capacitor 149, so that the convenience is improved when it is desired to quickly operate the cleaning tank temperature sensor 127 at the time of inspection or the like.

Further, the CPU 143 takes in the temperature data detected by the sensor section 148 via the A / D converter 147 and writes it into the memory 144 once. Then, when polling from the controller 136 via the signal line 122 by the I / O interface 146, the memory 144
Temperature data written to the I / O interface 1
46 to the controller 136 via the signal line 122.

Here, the memory 144 is used to carry out ID communication of the cleaning tank temperature sensor 127 itself, identification data indicating that the sensor is a sensor, set value data such as low / high temperature alarm temperatures, and data communication with the controller 136. And the like are stored. If a failure has occurred in the cleaning tank temperature sensor 127, the failure data is also written to the memory 144, and the controller 13
6 is sent.

On the other hand, FIG. 8 shows the structure of the switching element 128 provided on the power supply board 124 for controlling the cleaning pump 26, the rinsing pump 37, the detergent pump 41, the cleaning heater 9A and the rinsing heater 36A, respectively. . The switching element 128 includes a CPU 158 as terminal-side control means and a memory 159 as storage means.
And an I / O interface 161 as transmission / reception means
And an I / O interface 162 as a driver
And a transistor 163 as switching means connected to the I / O interface 162, a capacitor 164 as a power storage element, and diodes 166 and 167 as rectifying elements.

In this case, the capacitor 164 is connected to the output side of the diode 166, and each element is connected to a connection point between the diode 166 and the capacitor 164.
When the switching element 128 is connected to the signal line 122, power is supplied to each element as long as the high-potential and low-potential pulse signals constituting data are at high potential as described above, and the capacitor 164 is also supplied. Charged. And
While the potential is low, the capacitor 164 is discharged to supply power to each element.

The switching element 128 also has a Vcc (DC + 5V) power supply terminal 1 connected to the connection point between the diode 166 and the capacitor 164, as shown by the broken line in FIG.
If the Vcc power supply terminal 55 is provided and this Vcc power supply terminal 155 is connected to a power supply line, each element of the switching element 128 can operate even when power is supplied from the power supply line. That is, in this case, each element operates without filling the capacitor 164, so that the convenience is improved when the switching element 128 is to be quickly operated at the time of inspection or the like.

The CPU 158 is switchable between an output mode and an input mode and can be set.
The switching element 128 provided above is in the output mode. In this output mode, when ON / OFF data is transmitted from the controller 136 via the signal line 122 by the I / O interface 161, the transistor 163 is turned ON / OFF by the I / O interface 162 based on the ON / OFF data. Turn off. The collector terminal of the transistor 163 (indicated by S2 in FIG. 8) and the I / O interface 162 are connected via a diode 167.

Here, the memory 159 stores an ID code of the switching element 128 itself, identification data indicating that the element is a switching element, a protocol for performing data communication with the controller 36, and the like. Also,
When a failure occurs in the switching element 128, the data is also written to the memory 159 and transmitted to the controller 136.

The switching element 128 is connected to the power supply board 1
The switching unit 168 is wired on the reference numeral 24 as shown in FIG. That is, 169 is a photocoupler composed of a photodiode 169A and a phototriac 169B, 171 is a resistor, 172 is a diode as a rectifying element, and 173 is a capacitor 174 as a power storage element.

In this case, the capacitor 174 is connected to the output side of the diode 172, and the resistor 171 and the photo-detector are connected between the connection point between the diode 172 and the capacitor 174 and the collector terminal (S2 in FIG. 8) of the transistor 163 of the switching element 128. Diode 169A is connected in series. The terminal S1 (FIG. 8) of the switching element 128 is connected before the diode 172. And
Phototriac 169B has AC power line and cleaning pump 2
6. Rinse pump 37, detergent pump 41, cleaning heater 9
A, between the rinse heater 36A.

When the diode 172 is connected to the signal line 122, power is supplied to the photodiode 169A via the resistor 171 as long as the high-potential and low-potential pulse signals constituting data are at the high potential. , The capacitor 174 is also charged. While the potential is low, it is discharged from the capacitor 174 to supply power to the photodiode 169A.

Similarly, if the Vcc power supply terminal 160 is connected to the connection point between the diode 172 and the capacitor 174, and this Vcc power supply terminal 160 is connected to the power supply line, the photodiode 169A operates even when power is supplied from the power supply line. Will be able to do it. That is, in this case, each element operates without filling the capacitor 174, so that the convenience is improved when it is desired to quickly operate at the time of inspection or the like.

Next, FIG. 10 shows the configuration of the switching element 128 used as a detecting device as described above. still,
The configuration of the switching element 128 itself is the same as that of FIG. In this case, the switching 128
Of the transistor 163 (terminal S in FIG. 10)
2) That is, the input side of the diode 167 is connected to the resistor 176 and the pressure sensor 17 connected in series between the Vcc power supply and the ground.
7 (or 178 or 179).

The pressure sensor 177 is connected to the detergent tank 4.
The amount of detergent within 0 is detected, and the contact is turned on (closed) when the amount of detergent is reduced to a predetermined amount, and is turned off (opened) when the amount of detergent is more than that. A pressure sensor 178 detects the amount of rinsing water in the rinsing tank 36 and similarly turns the contacts ON and OFF. A pressure sensor 179 detects the amount of rinsing water in the washing tank 9 and similarly turns ON and OFF the contacts. It is a sensor.

The switching element 128 is connected to each pressure sensor 1
77, 178, 179, together with the pressure sensor 177, constitute a detergent remaining amount sensor, together with the pressure sensor 178, constitute a rinse tank water level sensor, and together with the pressure sensor 179, constitute a washing tank water level sensor.

In this case, the CPU 158 is set to the input mode. In this input mode, the CPU 158 turns off the transistor 163 to invalidate its operation, and takes in the potential of the terminal S2 via the diode 167. Then, the memory 159 writes whether the potential of the terminal S2 is the high potential “H” or the low potential “L”.

Then, when polling from the controller 136 via the signal line 122 by the I / O interface 161, “H” written in the memory 159 is obtained.
The “L” data (data relating to the state of the pressure switch) is transmitted to the signal line 12 by the I / O interface 161.
2 to the controller 136.

The operation of the above configuration will be described. First, it is assumed that the personal computer P is not connected to the switch 139 at first. Each sensor 127, 110 and switching element 1
28 .. are connected to the signal line 122, the controller 136 (the CPU 131 of)
2 is searched for the connection status of each element (sensors 127 and 110, switching element 128,..., Storage device 125).

In this case, the controller 136 makes an ID request to all the sensors 127, 110, the switching elements 128,..., And the storage device 125, and responds to the request for all the sensors 127, 110, the switching elements 128,. Reference numeral 125 denotes the controller 1
Reply to 36. Controller 136 returns the returned ID
The storage device 125 is connected to the signal line 122 based on a code or the like.
The cleaning tank temperature sensor 127 and the rinsing tank temperature sensor 110 are connected, and the switching element 128 for the cleaning pump 26, the switching element 128 for the rinsing pump 37, the switching element 128 for the detergent pump 41, and the cleaning heater 9A are connected. Switching element 12 for
8, switching element 128 for rinsing heater 36A,
It is recognized that the switching elements of the switching elements 128 for the pressure sensors 177, 178, 179 are connected.

The controller 136 holds the connection status of the recognized temperature sensors 127 and 110, the switching elements 128,... And the storage device 125 in the memory 132, and thereafter uses this ID code to transfer data to each element. Will be sent.

Next, in the inspection at the time of shipment, the personal computer P is connected to the switch 139. At this time, the controller 136 is disconnected from the signal line 122 as described above. In this state, the personal computer P transmits parameters (data) such as the type, the control method, and the function (each temperature) of the dishwasher 1 to the storage device 125 via the signal line 122. The storage device 125 holds the parameter data transmitted from the personal computer P.

Thereafter, the personal computer P is disconnected from the switch 139, and the controller 136 is connected to the signal line 122 again. When the controller 136 is connected to the signal line 122, the controller 136 accesses the storage device 125 and reads out the parameters written as described above from the storage device 125,
It is stored in its own memory 132. Thus, the setting of the parameters from the personal computer P to the controller 136 is completed.

Next, the controller 136 turns ON / OF.
F data is supplied to the switching element 128 of the power supply board 124.
And the ID code are transmitted to the signal line 122 to control the pumps and heaters, and the temperature sensors 127 and 11
Data is received from the switching elements 128 of the pressure switches 177, 178, and 179, and the following operation is performed.

That is, the CPU 131 of the controller 136
Polls the sensors 127 and 110 and the switching elements 128... At a predetermined cycle as described above. This polling is performed based on the above-mentioned ID code. The CPU 143 of the sensors 127 and 110 transmits the temperature data to the controller 136 in response to the polling as described above. The CPU 131 of the controller 136 once writes the received temperature data into the memory 132, compares the temperature data from the washing tank temperature sensor 127 with the set temperature in the parameters set as described above, and converts the ON / OFF data. The signal is transmitted to the signal line 122 together with the ID code of the switching element 128 of the cleaning heater 9A.

Switching element 128 of cleaning heater 9A
When the CPU 158 receives ON / OFF data of its own ID code, it turns ON / OFF the transistor 163 based on the received data. This transistor 163
Is turned ON / OFF, the photodiode 169A becomes O
N (emission) / OFF (extinguish), whereby the phototriac 169B is turned ON / OFF, and thereby the cleaning heater 9A is energized / deenergized.

The CPU 131 of the controller 136
Transmits ON / OFF data to the signal line 122 together with the ID code of the switching element 128 of the rinsing heater 36A, and controls energization / non-energization of the rinsing heater 36A.
Thus, the cleaning water and the rinsing water in the cleaning tank 9 and the rinsing tank 36 are maintained at a predetermined temperature (warm water).

Further, the cleaning pump 26 and the rinsing pump 3
7. ON / OFF data together with their ID codes are sent to the switching element 128 of the detergent pump 41 on the signal line 12.
2 and is controlled as described below.

That is, first, the rinsing pump 37 is operated.
Rinsing water (warm water) stored in the rinsing tank 36 is jetted from the vertical rinsing nozzle 12. The injected rinse water drops on the bottom plate 2D, flows into the cleaning tank 9 soon, and is stored as the cleaning water.

The hot water supply operation is completed, and the operation enters a standby state.
Next, a rack on which tableware as an object to be washed is placed is inserted along the rack rails 23 and housed in the washing room 3. Then, the switch 13 of the control box 15
When the predetermined start switch 8 is operated, the washing process is started. In this cleaning step, the controller 136 operates the cleaning pump 26 to inject the cleaning water stored in the cleaning tank 9 from the upper and lower cleaning nozzles 11 toward the dishes. As a result, the dishes are cleaned. The jetted washing water is dropped on the bottom plate 2D and collected in the washing tank 9.
Reused. Further, every time the cleaning process is executed, the controller 136 operates the detergent pump 41 to supply a predetermined amount of the detergent into the cleaning tank 9 as described above.

This cleaning step is performed for a predetermined period, and then the procedure shifts to the rinsing step. In this rinsing stroke, the controller 136 operates the rinsing pump 37 in the same manner as described above, and injects the rinsing water in the rinsing tank 36 from the upper and lower rinsing nozzles 12 toward the dishes. As a result, the washing water attached to the tableware is rinsed, and the rinsing water is likewise washed in the washing tank 9.
Flows into.

The water level in the washing tank 9 rises due to the inflow of the rinsing water. However, when the water level is higher than the overflow pipe 24, the water flows out therefrom, so that the water level is restricted to the upper end of the overflow pipe 24.

Further, the cleaning water or the rinsing tank 36 in the cleaning tank 9 is executed by executing the cleaning step and the rinsing step.
When the rinsing water in the inside falls to a predetermined water level, the pressure sensor 179 or 178 detects this and turns on the contact. Accordingly, the potential of the terminal S2 in FIG. 10 becomes “L”, and the data held by the switching element 128 becomes “L”.
Becomes

This data is taken into the controller 136 at the next polling as described above,
Thus, the rinsing water 36 is introduced into the rinsing tank 9 in the same manner as described above, or an operation of opening the valve (not shown) into the rinsing tank 36 is performed. Further, the controller 136 counts the number of times of the cleaning operation as one cleaning operation with the cleaning process and the rinsing process as one cleaning operation, and also stores data relating to the number of times of the cleaning operation in the storage device 125.

Next, when the amount of the detergent in the detergent tank 40 drops to a predetermined amount, the contact of the pressure sensor 177 turns ON, and the potential of the terminal S2 in FIG. 10 becomes "L". As a result, the data held by the switching element 128 becomes “L”.
Becomes This data is taken into the controller 136 at the next polling as described above.

The controller 136 detects a decrease in the amount of the detergent in the detergent tank 41 by exchanging data with the switching element 128 of the pressure sensor 177, or executes a predetermined number of times of the washing operation (the amount of the detergent in the detergent tank 40). When the number of times has approached the sky), these data are stored in the storage device 125 and an alarm display indicating that (such as the number of executions of the cleaning operation) is displayed on the display 137. Then, the modem M is used to notify the affiliated detergent manufacturer or maintenance company.

As a result, the user or service person can quickly and accurately grasp that the detergent tank 41 is empty in a short time, and replenishment is performed to prevent the occurrence of cleaning failure due to running out of detergent. become able to.

When the controller 136 detects that the contacts are ON (data is "L") based on the data from the switching elements 128 of the pressure sensors 177, 178 and 179, the display 137 displays the data as shown in FIG. A window is opened to indicate that the contact has been turned on and the amount of water or detergent has decreased. Accordingly, the user and the maintenance worker can accurately recognize the state of each of the pressure switches 177, 178, and 179.

The contact is turned off by supplying water or replenishing detergent.
(Data is “H”), the controller 136
Closes the window of the display 137.

Further, the controller 136 controls each sensor 12
If the temperature data from 7,110 cannot be taken,
It is determined that the line to the sensor has been disconnected. Further, when data from the switching elements 128... Cannot be taken, it is determined that the switching element 128 has failed or is disconnected. CPU 131 of controller 136
When such a failure occurs, the display 137 indicates that the sensor 127, 110 or the switching element 128 has failed. Then, such data is also stored in the storage device 125.

The personal computer P is connected to the switch 139 based on such a failure / alarm display or when performing maintenance / inspection (maintenance) of the dishwasher 1 periodically. As a result, the controller 136 is disconnected from the signal line 122 as described above, and the personal computer P
Are connected to the signal line 122. When a predetermined key operation is performed on the personal computer P, the personal computer P is stored in the storage device 12.
5 to access the failure / alarm data and the data on the number of times the cleaning process is performed.

The maintenance worker (serviceman) can accurately grasp the failure status from the data. Whether or not the detergent tank 40 should be replenished with the detergent can also be determined based on data on the remaining amount of the detergent and data on the number of times the cleaning process is performed (the number of times of operation).

In the embodiment, the pressure sensors 177, 17
Although the remaining amount of each tank is detected at 8, 179, a capacitance sensor or the like may be adopted.

[0082]

As described above in detail, according to the first aspect of the present invention, in a dishwasher for washing by spraying washing water onto dishes and the like housed in a washing room, a detergent supply for introducing a detergent into washing water. A device and a control device for controlling the cleaning operation are provided,
In this control device, a predetermined amount of detergent is supplied by the detergent supply device at each cleaning operation, and the number of times of the cleaning operation is integrated and displayed on the display. The remaining amount of the detergent in the detergent supply device can be easily estimated from the number of operations.

As a result, the detergent can be replenished to the detergent supply device before the detergent becomes empty, and a situation in which an incomplete cleaning operation is performed due to running out of the detergent, or the cleaning operation itself cannot be performed. Can be avoided beforehand.

According to the second aspect of the present invention, in a dishwasher for washing by spraying washing water onto dishes and the like housed in a washing room, a detergent supply device for introducing a detergent into the washing water and controlling a washing operation. The control device is configured to supply a predetermined amount of detergent by the detergent supply device for each cleaning operation, accumulate the number of times of the cleaning operation, and notify the outside when the predetermined number of times is reached. Therefore, the user or the service person can know from the notification that the number of times the detergent in the detergent supply device has become empty is reached.

As a result, it is possible to replenish the detergent to the detergent supply device before the detergent is exhausted, which may cause an incomplete cleaning operation due to running out of the detergent or a situation in which the cleaning operation itself cannot be performed. Can be avoided beforehand.

According to the third aspect of the present invention, in a dishwasher for washing by spraying washing water onto dishes and the like housed in a washing room, a detergent supply device for charging a detergent into the washing water and controlling a washing operation. And a sensor for detecting the remaining amount of detergent in the detergent supply device. The control device supplies a predetermined amount of detergent by the detergent supply device every washing operation, and based on the output of the sensor, the detergent supply device. When the remaining amount of the detergent in the inside has decreased to a predetermined value, an alert is sent to the outside, so that the user or service person can quickly and accurately notify that the detergent in the detergent supply device is almost empty by notification. Be able to grasp.

As a result, it is possible to replenish the detergent to the detergent supply device before the detergent is exhausted, which may cause an incomplete cleaning operation due to running out of the detergent or a situation in which the cleaning operation itself cannot be performed. Can be avoided beforehand.

According to the fourth aspect of the present invention, in addition to the second or third aspect, the control device notifies the outside by using a telephone line. The user can be notified of the decrease in the amount and urge replenishment / maintenance, thereby greatly improving the convenience for the user.

[Brief description of the drawings]

FIG. 1 is a perspective view of a dishwasher as an embodiment to which the present invention is applied.

FIG. 2 is a front view of the dishwasher.

FIG. 3 is a plan view of a washing room of the dishwasher.

FIG. 4 is a vertical sectional front view of a washing room of the dishwasher.

FIG. 5 is a wiring diagram of an electric system of the dishwasher.

FIG. 6 is a block diagram of an electric circuit of the control box.

FIG. 7 is a block diagram of an electric circuit of the temperature sensor.

FIG. 8 is a block diagram of an electric circuit of a switching element in an output mode.

FIG. 9 is an electric circuit diagram of a switching unit using a switching element.

FIG. 10 is a block diagram of an electric circuit of a switching element in an input mode.

FIG. 11 is a view showing a window for a pressure switch displayed on a display of the controller.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dishwasher 2 Inner box 3 Washing room 4 Machine room 9 Washing tank 11 Washing nozzle 12 Rinse nozzle 15 Control box 26 Washing pump 36 Rinse tank 37 Rinse pump 40 Detergent tank 41 Detergent pump 42 Detergent injection nozzle 44 Detergent supply pipe 110 , 127 Temperature sensor 122 Signal line 128 Switching element 131, 143, 158 CPU 132, 144, 159 Memory 137 Display 139 Switcher 142 Communication line 146, 161 I / O interface 148 Sensor unit 149, 164 Capacitor 151, 166, 167 Diode 163 Transistor 169 Photocoupler 169A Photodiode 169B Phototriac 177, 178, 179 Pressure sensor M Modem P Personal computer

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsumi Maekawa 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Kazuya Imamura 2--5 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Tsutomu Ishikura 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. 3B082 CC02 DB01 DC01

Claims (4)

[Claims] 1. A dishwasher for washing by spraying washing water onto dishes stored in a washing room, comprising: a detergent supply device for charging a detergent into washing water; and a control device for controlling a washing operation. A dishwasher, wherein the controller supplies a predetermined amount of detergent by the detergent supply device every time the washing operation is performed, and accumulates the number of times of the washing operation and displays the accumulated number on the display. 2. A dishwasher for washing by spraying washing water onto dishes and the like housed in a washing room, comprising: a detergent supply device for introducing a detergent into washing water; and a control device for controlling a washing operation. The controller is characterized in that a predetermined amount of detergent is supplied by the detergent supply device for each cleaning operation, the number of times of the cleaning operation is integrated, and when the number of times reaches the predetermined number, a notification is made to the outside. Machine. 3. A dishwasher for washing by injecting washing water into dishes stored in a washing room, a detergent supply device for charging a detergent into washing water, a control device for controlling a washing operation, and the detergent A sensor for detecting the remaining amount of detergent in the supply device, the control device supplies a predetermined amount of detergent by the detergent supply device for each cleaning operation, and based on the output of the sensor, A dishwasher characterized in that when the remaining amount of detergent drops to a predetermined value, it is notified to the outside. 4. The dishwasher according to claim 2, wherein the control device notifies the outside using a telephone line.