JPH03261441A - Tableware washing machine - Google Patents

Abstract

PURPOSE:To wash the tableware, etc., by providing a rotating means for rotating alternately washing nozzle bodies, and a nozzle for injecting washing water and washing the tableware, etc., and opening the nozzle in the oblique upper part. CONSTITUTION:At the time of forward rotation of a pump 12, tableware is washed by ejecting washing water from an arm nozzle 6, the pump 12 is driven and stopped, the opening direction of a driving hole of the arm nozzle 6 is varied, and a rotation of the nozzle 6 is inverted. When washing water is supplied into the arm nozzle 6, it is ejected from nozzles 65-65'', tableware, etc., are washed, and turning force is given counterclockwise. A ball valve 72 is floated by washing water in a stationary part 70F, and a nozzle 67'' is closed. Washing water is ejected from a driving nozzle 67, and apply counterclockwise turning force to the nozzle 6. When the pump 12 stops, the ball valve 72 is set in the stationary part 70R, and when the pump 12 is driven again, the nozzle 67 is closed, the washing water applies clockwise turning force to the arm nozzle 6.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial field of application The present invention is capable of cleaning tableware by spraying cleaning water supplied from a pump onto the tableware from a cleaning nozzle body disposed at the bottom of the cleaning tank. Concerning dishwashers for cleaning.

(b) Prior Art This type of dishwasher has a long cleaning nozzle whose central portion is rotatably fixed, and a propelling nozzle is provided at one end of the nozzle body. When the cleaning water is sent to the nozzle body, the cleaning water moves toward the outer end, is jetted from each nozzle along the way, and is jetted laterally in one direction from the propulsion nozzle.

This unidirectional spray rotates the cleaning nozzle body in the other direction.

In Japanese Patent Publication No. 4, it was proposed that such propulsion nozzles be provided in both directions, a ball valve be rolled during supply of cleaning water to close one nozzle, and the cleaning nozzle body be alternately rotated in both directions.
It is disclosed in Japanese Patent No. 9-44751.

(c) Problems to be Solved by the Invention In the conventional example described above, debris such as food scraps attached to tableware contained in the cleaning water supplied to the cleaning nozzle body accumulates on the cleaning nozzle body, causing the ball valve to close. If the ball valve does not close the propulsion nozzle because it gets caught in it and the ball valve does not close the propulsion nozzle, there is a risk that the cleaning nozzle body will not rotate even if the cleaning water is simply jetted from both propulsion nozzles.

The present invention solves this problem.

(d) Means for Solving the Problems The solution according to the present invention comprises: a cleaning nozzle body rotatably disposed in a long length at the bottom of the cleaning tank; a pump supplying cleaning water to the cleaning nozzle body; rotating means for alternately rotating the cleaning nozzle body clockwise or counterclockwise each time the supply of cleaning water from the pump is stopped; The nozzle is configured to open obliquely upward.

(e) Functional cleaning water is supplied to the cleaning nozzle body, and debris contained in the cleaning water accumulates inside the cleaning nozzle body, stopping the movement of the ball valve, making it impossible to close the propelling nozzle of the cleaning nozzle body. At this time, the cleaning nozzle body begins to rotate due to the horizontal component of the jetting force from the nozzle opened obliquely upward. At this time, the ball valve moves due to its inertial force. When the ball valve moves, a stream of cleaning water sprayed from a nearby propulsion nozzle carries the ball valve to the propulsion nozzle, closing the propulsion nozzle. When this propulsion nozzle is closed, the cleaning nozzle body begins to rotate.

(v) Example Below, to explain based on the example, in Figs. 1 and 2, reference numeral 1 is a table-top dishwasher, a front opening is provided with a door 2, and a washing tank 3 is installed inside. It is set up. A tableware basket 4 is placed in the middle of the washing tank 3 so that it can be put in and taken out from the front opening. 5 is a mounting rail.

An arm nozzle 6 and a sheathed heater 7 are arranged at the bottom of the washing tank 3 to rotate and spray washing water onto the tableware basket 4, and a recess 9 in which a removable filter 8 is provided is provided at the bottom. It is formed. The operation of this arm nozzle 6 will be explained later. Note that a door switch 10 for detecting opening/closing of the door 2 is provided at the front part of the upper surface of the cleaning tank 3, and a thermistor 11 is installed near the water supply port of the cleaning tank 3, although not shown. It is provided at the bottom of the tank near the heater 7.

Reference numeral 12 denotes a washing/draining pump (hereinafter referred to as pump), and when the pump 12 rotates forward, washing water is supplied to the arm nozzle 6, and the washing water is jetted from the arm nozzle 6 to wash the dishes. Rinse and recirculate the wash water.

Also, when rotating in reverse, the cleaning water in the cleaning tank 3 is drained from the drain vibrator 1.
3 to the outside of the machine. By driving and stopping the pump 12, the opening direction of the propulsion hole of the arm nozzle 6 changes 2, and the rotation of the nozzle 6 is reversed. Reference numeral 14 denotes a circulation duct that communicates with the cleaning tank 3 and forms a closed loop with the cleaning tank 3. Reference numeral 15 denotes a circulation duct that partitions the tank air inside the circulation duct 14 and the outside air. The partition plate 16 for dehumidification is provided by cutting out a part of the partition plate 15 so that one side is in contact with the outside air and the other side is in contact with the air inside the tank, and blades are provided on both sides of the partition plate 16. This double-sided fan is rotated by a motor 17 to forcibly circulate the air inside the tank and the outside air in the circulation duct 14. 18 is a water level detection case having a communication hole communicating with the inside of the cleaning tank 3;
The water level and abnormal water level in the cleaning tank 3 are detected by the vertical movement of the float in the detection case 18. Also,
A water supply pipe 20 having a water supply valve 19 is connected to the water level detection case 8, and when water is supplied, the water level detection case]
8, water is supplied to the cleaning tank 3 while cleaning impurities such as scum in the case 18, and the water level is constantly detected in the case 1.
I try to keep the inside clean. A door 2 of the main body 1 is provided with an operating section 21 of the dishwasher, and a control box 22 connected to this operating section 21 is provided at the lower front surface.

As shown in Fig. 3, the operation section 21 displays text for each step of hand washing, washing, rinsing, and drying, as well as each course of prewash only, solid, standard, speedy, and drying only, and drying time. LEDs 23, 24, 25 corresponding to the display, a drying time change key 26, a course change key 27, and a start key 28 which also serves as a -time stop key are provided.

Each of the keys 26, 27, and 28 is used to change the time mode, course mode, or stop/start to sequential mode each time the key is operated.

The control box 22 contains ROM, RAM, CPU,
A control circuit centered on a microcomputer 29 (hereinafter referred to as microcomputer) consisting of Ilo, etc. is incorporated, and the circuit diagram thereof is shown in FIG. That is, the microcomputer 29
Washing water level switch 30, abnormal water level switch 31, thermistor 11, door switch 10, each key 26, 27, 28
A signal is input from the sheath heater 7, water supply valve 19, pump 12, motor 17, and an operation signal is output to the LEDs 23, 24, and 25. Further, the microcomputer 29 can output an output to the AC solenoid 33 and the buzzer 34 to open the power switch 32 which is currently closed. Furthermore, the microcomputer 29 inputs a detection signal from an overcurrent detection means 35, which includes a current transformer or the like, which detects whether the pump 12 is locked.

Next, the control operation by the microcomputer 29 will be explained based on FIGS. 4 and 5. First, in the initial setting after turning on the power switch 32, the RAM 36 is cleared and the ROM is
37 to call up and set the standard course and time. After checking for a disconnection of the thermistor 11, each operation of the course change key 27 and the drying time change key 26, which can be activated in settings other than the hand wash only course, is checked.

The temperature detected by the thermistor 11 is checked regardless of the course change or the operation of the start key 28, and if the abnormal temperature control section 38 detects 80° C. or higher at that time, the power switch 32 is turned off by the AC solenoid 33. This turning off operation is repeated at predetermined time intervals in consideration of the case where the power switch 32 cannot be turned off at once.
The abnormality is notified by blinking and intermittent operation of the buzzer 34.

Note that the abnormality notification in this embodiment is based on the number of blinking LEDs,
The type is changed to correspond to the content of the abnormality, and the user is informed of the content of the abnormality.

When the course and time are set and the start key 28 is operated, first, a start flag is set. This start flag is cleared by the stop operation and the end of operation. The freezing flag and the 7 flag are checked, and if the flag is set, the freezing control unit 40 checks whether the temperature detected by the thermistor is 5° C. or lower. If the temperature is below 5°C, the freezing control unit 40 stops the pump 12.
The 3 second counter 41 is driven to open for 3 seconds. The overcurrent detection means 35 checks whether an overcurrent occurs in the pump driving state during these three seconds. When the detection signal is output, the output of the drive system and heating system is immediately turned off, and an abnormality notification is executed. Such an overcurrent occurs when the pump 12 is locked due to freezing, and when detected, the progression of the course is automatically stopped.

If three seconds pass without any overcurrent being detected, the freeze control section 40 stops the pump 12, sets the freeze check flag, and proceeds to the next step.

Thus, if the freeze check flag is set, the process control unit 42 executes each process of prewashing, washing, rinsing, and drying according to the set course and time. In each process, the water supply valve 19 is opened to supply water, and when the wash water level switch 30 is trimmed, a wash water level flag is set. Further, when the door switch 10 detects the closing of the door 2, a door flag is set.

When the set course is completed, the start flag is cleared and the auto power-off subroutine shown in FIG. 7 is executed by the disconnection control section 43. That is, when the start flag is turned off, the 10-minute counter 44 starts counting, and when the count increases, the AC solenoid 33 is activated and the power switch 32 is energized to turn off. This AC solenoid 33 is repeatedly energized and disconnected for 0.5 seconds on and 0.5 seconds off 10 times. and,
Although the 10 minute counter 44 is cleared, the power off operation is continued every 10 minutes until the power switch 32 is turned off by the first actuation of the AC solenoid 33. During this time, even though dehumidification was performed during the drying process, it was not completely dehumidified, so the humidity of the air in the tank was higher than normal. Therefore, if you leave the dishes as they are, there is a risk that the hot dishes will cool down and condensate on the dishes. Therefore, the double-sided fan 16 is rotated intermittently to circulate the air inside the washing tank 3, and when the dishes are taken out, the double-sided fan 16 is rotated intermittently. I try to avoid condensation as much as possible. Also, after the power is turned on, the start key 28 is set to 1.
If no operation is performed after 0 minutes, this auto power off subroutine is executed and automatically operates the AC solenoid 33 to turn off the power switch 32. During this time, the double-sided fan 16 is not rotated.

The abnormal water level flag is set when the abnormal water level switch 31 trips for one second or more, and at that time, the abnormal water level control section 45 performs processing.

The washing process in the designated (selected) course is explained in the flowchart of FIG. Here, first, it is determined whether the content of the process register 46 is 2, that is, whether or not the washing process is in progress, and then a subroutine for checking the washing water level switch 30 shown in FIG. 8 is executed.

The drainage control unit 47 reversely rotates the pump 12 to perform drainage when the wash water level flag is set even though the water supply end flag is not set. In normal usage, there should be no cleaning water, so the cleaning water level flag is not set (the cleaning water level switch 30 has been reset).
However, if you manually add water (hot water), the wash water level flag will go up. When the pump 12 is reversely rotated to drain water, if the wash water level switch 30 is normal, the drain counter 48 is reset and the flag disappears by the time the drain counter 48 counts a predetermined time, and if it is abnormal, the flag remains. If it is normal, the pump 12 is stopped, and if it is abnormal, the system output is stopped and an abnormality is notified.

On the other hand, the water supply subroutine shown in FIG.
9. Here, after checking the water supply end flag and the wash water level flag, the water supply valve 19 is opened and the addition contents of the water supply counter 50 are checked. If there is no manual water supply (hot water), the cleaning water level switch 30 is not actually checked, so it is checked here whether the cleaning water level flag is set (whether the switch 30 trips). When the flag is raised, the water supply control unit 49 supplies water until 2 seconds later, closes the water supply valve 19, and stops the water supply counter 50. In this way, if the flag is raised by the time the water supply counter 50 counts two minutes, the water supply end flag is raised.

However, since manual water supply (hot water) is not performed many times during one operation, the drainage abnormality counter 51 indicates that the content (water supply time) of the water supply counter 50 is within 10 seconds.
If it is counted four times or more, it is determined that the drainage condition is poor, and the water supply control unit 49 issues an abnormality notification as a drainage abnormality and stops the system output. Further, if the water supply counter 50 counts 2 minutes or more and the washing water level flag does not go up, the water supply control unit 49 notifies the washing water level switch 30 or the water supply system of an abnormality, closes the water supply valve 19, and pumps the water. 12 is reversely rotated to drain water and stop output from other systems.

When the cleaning water level switch 30, water supply system, and drainage system are checked in this way, the temperature control section 52 checks the cleaning water temperature and sets a temperature check flag, and if the water temperature is already 60° C. or higher, sets a time reduction flag.

The washing process control unit 40 first rotates the pump 12 in the forward direction to start washing. Incidentally, the pump 12 is driven intermittently in the forward rotation direction until this washing process is completed, and the arm nozzle 6 is reversed each time to wash the dishes. In addition, the one-minute counter 52 is operated from the beginning of the washing process, and the counter value of the ON counter 58 that counts the driving time T of the pump 12 is set to a small value (for example, 8.5 seconds) until the second counter 52 counts up. ), quickly pour washing water on the dishes,
Make it familiar. When the counter 52 counts up, a 1 minute elapsed flag is set, and the drive time T2 of the pump 12 is set to a time longer than the drive time T1 (for example, 28 degrees 5 seconds) until the cleaning is completed. It automatically changes the contents and continues cleaning. Note that the content T3 of the OFF counter 59, which counts the time during which the pump 12 is stopped in order to reverse the arm nozzle 6, is a constant value (for example, 1.5 seconds). Note that the structure for inverting the arm nozzle 6 will be explained later.

In parallel with the above operation, the cleaning water temperature is checked using the thermistor 11, and if it is below 60°C, the heater 7 is energized, and if it is above 60°C, the heater 7 is turned off. However, the -degree water temperature is 60 degrees.
When the temperature reaches ℃ or higher, a temperature reaching flag is set. In this way, 1
When the 2-minute counter 60 counts up, a 12-minute elapsed flag is set, and then the time reduction flag is checked. If the time reduction flag is set (when the initial water temperature is 60° C. or higher), the pump 12 and heater 7 are stopped, and a drainage subroutine is executed. This drain subroutine is illustrated in FIG. First, the pump 12 is reversely rotated to start discharging the cleaning water from the cleaning tank 3 via the drainage vibrator 13. At the same time, the counting operation of the drain counter 48 is also started. This count value is set to the time at which half of the wash water in the wash l'13 is drained. This completes the drainage operation in the washing process. This is because the temperature of the city water that will be supplied next and the temperature of the tableware is high, so there is a risk that glass cups etc. will break due to heat shock.
Mix the city water and the washing water used in the washing process, and once the water temperature is
The water temperature is set to an intermediate temperature between the city water temperature and the washing water temperature (60"C), and the next rinsing process is performed using that washing water to lower the temperature of dishes, etc. Also, the drainage operation in the rinsing process is as follows: 1
1ilil! To drain the water after rinsing the eyes, the pump 12 is driven and the water supply valve 19 is opened to drain the water while cleaning the inside of the cleaning tank 3. 2. Drainage after completion of rinsing of the elutriator is carried out with the water supply valve 19 closed. In this rinsing step, the draining operation is performed while the draining counter 48 is operated twice.

Thereafter, the contents of the process register 46 are changed to the number 3 indicating the end.

On the other hand, if the initial water temperature is 60"C or lower, once the water temperature reaches 60"C and the reaching flag is set, the pump 12 and heater 7 will stop after 12 minutes have passed.Furthermore,
If you have been using city water as is from the beginning, the arrival flag will not be raised even after 12 minutes (i.e. below 60℃),
The washing process continues until the water temperature reaches 60℃ or higher, and then
After reaching 60''C or higher, the pump 12 and heater 7 stop.

When the 5-minute counter 61 is counted down and counted up at the same time as the washing process starts, the stop time T3 of the pump 12 that is intermittently driven is made one time longer than usual (for example, 3 seconds), and during that time the washing water level is If the switch 30 is detected and trips, the washing process continues, and if it does not trip, water is supplied.

If the cleaning water level switch 30 does not trip within 10 seconds with this water supply, it is assumed that a water leak has occurred, and the cleaning process is stopped and an abnormality notification is performed.

The next rinsing step is illustrated in FIG.

This step is performed four times. First, the steps from the first to the third time will be explained below. After water is supplied, the heater 7 is energized, and the pump 12 is driven intermittently for the period counted by the ON counter 58 and OFF counter 59 in the same manner as in the washing process described above until the 1 minute counter 52 counts up, and the arm nozzle 6 is reversed. , rinse dishes. After that, heater 7
Pump 12 while turning off and resetting all flags.
Rotate in the opposite direction to drain water. Repeat this operation three times. Next, for the fourth time, after water is supplied to the cleaning tank 3, the heater 7 is turned on and the pump 12 is driven in the same manner as above.

However, the one minute counter 52 is not driven. Instead, temperature detection is performed, and if 65°C is detected, the operation unit 2
The display sections 56 and 57 of No. 1 are turned on and off alternately. This display is a sign that the sterilization process has begun. Further, when the cleaning water is heated and reaches 71° C., the heater 7 is cut off and the two-minute counter 53 starts counting down.

When this countdown ends, the pump 12 is stopped, the display section 56 of the operation section 21 is turned off, and the display section 57 is turned on. Then, all flags are set and the process register 46 is set.
Change the contents to 4, which indicates the drying process, and drain the water.

Finally, the drying process is illustrated in FIG.

In this process, the drying process control section 42 drives the motor 17 to rotate the double-sided fan 16. Further, while the drying process counter 54 counts the set time, the temperature inside the cleaning tank 3 is detected by the thermistor 11 by the heating control unit 55, and the heater 7 is controlled on/off so as to be maintained at 65°C. In other words, as the process time progresses, the heating control unit 55 outputs an output equivalent to 220 W when the process time is set to 20 minutes (heater 7 is turned on for 10 seconds and off for 40 seconds), and when the process time is set to 60 minutes, the output for the first 20 minutes is the same as that for the 20 minutes. Same as , the next 20 minutes is equivalent to 183W (10 seconds on, 50 seconds off), and the last 20 minutes is 157W.
Heater 7 so that it is equivalent (10 seconds on, 60 seconds off)
control. Further, when the course is selected from stubborn, standard, and speedy using the course change key 24 before washing, the motor 17 is driven intermittently for 5 minutes after the drying process is started to rotate the double-sided fan 16. If residual heat drying is set, the drying process is omitted and the course being executed is ended.

When the designated course ends, the buzzer 34 notifies the user of the end.

13, FIG. 14, FIG. 15, FIG. 16, and FIG. 17 show the reversing mechanism of the arm nozzle 6. The arm nozzle 6 is a long one in which an upper member 6' made of synthetic resin and a lower member 6'' in the form of a flat plate made of metal are joined together with an interval forming a flow path 64.

The upper member 6' has upward nozzles 6 extending from the center to both outer ends.
A plurality of bosses 66 are formed at various locations,
By screwing the lower member 6' to the boss 66, the lower members 6', 6' are fixed. On both sides of the nozzle 65' at the outer end of the nozzle 65,
A small diameter propulsion nozzle 67' is formed obliquely. Bosses 66', 66' for screwing the lower member 6' are vertically provided near the outer end of the nozzle 67', and further,
Ribs 68' and 68'' are vertically provided on both sides from the center of one boss 66' and near the outer end of the other boss 66'.

In this way, both bosses 66', 66'' and both lips 68'
A propulsion nozzle 67' is located in the area surrounded by 68'.
67' are provided diagonally in opposite directions. and,
On the lower member 6″ of the flow path 64 in this area, there is a slope member 69.
are disposed and fixed in alignment with the lower member 6'' by both bosses 66'66'' and screws. This inclined member 69 is
A slope 69F descending from directly below one propulsion nozzle 67' toward the other propulsion nozzle 67' and a slope 69R opposite to this slope 69F are formed adjacent to each other. Therefore, the lowest position of one inclined surface 69F (hereinafter referred to as a fixed position 70F) and the highest position of the other inclined surface 69R (position directly below the nozzle 67') are adjacent to each other, and there is a step 71F. is formed. Similarly, the same relationship occurs between the highest position of one inclined surface 69F (the position directly below the nozzle 67°) and the lowest position of the other inclined surface 69R (hereinafter referred to as the normal position 7°R). , step 71
R is formed.

A ball valve 72 as a transfer valve, which is provided in the flow path 64 so as to be transferable, is placed in one of the fixed portions 70F, 7 when being cleaned.
0R, and movement in the upstream and downstream directions within the flow path 64 is prevented by the steps 71F and 71R and the rib 68.

Further, the nozzle 65' in the nozzle 65 is deflected in the same direction (diagonally upward) as the propulsion nozzle 67'. In addition,
All the nozzles 65 may be deflected so that the arm nozzle 6 rotates.

Next, to explain the operation during cleaning, the pump 12 is driven to pump up the cleaning water in the cleaning tank 3, and the arm nozzle 6
When supplied inside, the washing water runs along the flow path 64 toward the outer end, during which time it is sprayed from the nozzle 65. Empower.

On the other hand, the ball valve 72 is pushed toward the step 71F by the cleaning water at the stationary portion where it was originally located, for example, 70F. At this time, the cleaning water is once deflected downward by the rib 68# and then heads toward the nozzle 67', so it heads from the lower part of the ball valve 72 toward the step 71F, exerting a force that pushes up the ball valve 72. Therefore, the ball valve 72
It floats to the extent that it exceeds F and closes the nozzle 67'.

As a result, the cleaning water is injected from the propulsion nozzle 67'' and applies a counterclockwise rotational force to the nozzle 6.The rotational force in this direction is strong because of the rotational force from the nozzle 65'.
The rotational force is large. When the pump 12 is stopped, the ball valve 72 falls from the highest part of the other inclined surface 69R, moves down, and is fixed in the other fixed part 70R.

When the pump 12 is driven again, the cleaning water runs through the flow path 64,
The ball valve 72 is deflected by hitting the boss 66', hitting the rib 68'' and turning downward.Then, when heading toward the propulsion nozzle 67', the ball valve 72 is deflected from the bottom toward the step 71R. The valve 72 is scooped up and raised, and the nozzle 67'' is closed.

As a result, the cleaning water is injected from the propulsion nozzle 67' and applies a clockwise rotational force to the arm nozzle 6. This rotational force is reduced by the counterclockwise rotational force of the nozzle 67', reducing the number of rotations in this direction.

When the pump 12 is shut down again, the ball valve 72 is in the downward slope 6.
It falls to the highest part of 9F, rolls, and returns to the original stationary part 70F of one slope 69F.

Hereinafter, the above operation is repeated every time the drive of pump 2 is stopped.

(G) Effects of the Invention According to the present invention, it is possible to provide a highly reliable dishwasher in which the washing nozzle body does not spray washing water while the washing nozzle body is stopped, and dishes can always be washed.

[Brief explanation of drawings]

All figures are of the present invention; Figure 1 is a sectional view of the dishwasher, Figure 2 is a rear view with the rear panel removed, Figure 3 is a front view, and Figure 4 is a control block. Figure 5 is a flowchart for explaining the main operations of the entire process, Figure 6 is a flowchart for explaining the operation of the washing process, and Figure 7 is a flowchart for explaining the main operations of the washing process.
The figure is a flowchart to explain the operation of auto power off, Figure 8 is a flowchart to explain the operation of washing water level detection, Figure 9 is a flowchart to explain the operation of water supply, and Figure 10 is a flowchart to explain the operation of water supply. 11 is a flowchart for explaining the operation of the rinsing step, FIG. 12 is a flowchart for explaining the operation of the drying step, FIG. 13 is a plan view of the arm nozzle, and FIG. 14 is a flowchart for explaining the operation of the drying step. The figure is a side sectional view of the arm nozzle, Figure 15 is a sectional view taken along line A-A in Figure 13, and Figure 16 is a sectional view of the
17 is a cross-sectional view taken along line C-C' in FIG. 13. 3...Cleaning tank, 6...Arm nozzle, 12...Cleaning/drainage pump, 14...Circulation duct, 16...Double-sided fan, 18...Water level detection case, 19...Water supply valve , 21... Operation unit, 23.24.25... LED,
26...Drying time change key, 27...Course change key 28...Start key 29...Microcomputer, 30...Washing water level switch, 31...Abnormal water level switch, 32...Power supply Switch, 33...
AC solenoid 46...Process register, 53...2 minute counter, 54...Drying process counter, 56.57.
...Display section, 61...5 minute counter, 66...Boss, 67'67" propulsion nozzle, 68', 68"
... Rib, 69... Inclined member, 69R169F ...
Descending slope, 70R170F... fixed part, 72...
Ball valve (Fig. 2, Fig. 4, Fig. 7, Fig. 8, Japanese Fig. 9, Fig. 12)

Claims (1)

[Claims] (1) A cleaning nozzle body which is long and rotatably disposed at the bottom of the cleaning tank, a pump that supplies cleaning water to the cleaning nozzle body, and a pump that supplies cleaning water to the cleaning nozzle body; The washing nozzle body is provided with a rotating means for rotating the washing nozzle body alternately clockwise or counterclockwise, and a nozzle for spraying the washing water supplied to the washing nozzle body to wash the tableware, A dishwasher characterized by a nozzle that opens diagonally upward.