JPH02185222A - Dish washer - Google Patents

Abstract

PURPOSE:To successively execute washing and rinsing with an automatic control, to prevent the pollution of rinsing water and to facilitate the simplification of a handling in being very sanitary, a manufacture cost reduction, etc., with a simple constitution by retreating a dust case from a washing room before a rinsing action is completed after a washing action. CONSTITUTION:To a reservoir 14 of a wash tank 1 bottom part, a drawing base 19 to be retreated with a spring 18 is attached, an attachable/removable dust case 20 is placed, and the subject washer is equipped with a locking arm 43 to be engaged in a notch 42 of the dust case 20 and to support the dust case 20 at an attaching position against the spring 18 and a dust removing mechanism 45 having a dust removing solenoid 44 to escape the lock arm 43 from the notch 42. The solenoid 44 is controlled in relation with a feeding pump 25, the dust case 20 is provided so as to freely taken in/out to a washing room 6, and the dust case 20 is automatically moved to the outside of the washing room 6 before the rinsing action is completed after the washing action. Thus, the washing and rinsing can be successively executed with the automatic control, simultaneously, the rinsing water can be prevented from being made dirty because it flows into the dust case 20, the switch of the circulation system route of the water is made unnecessary, and the constitution can be made simple.

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a dishwasher that sprays warm water mixed with detergent onto dishes to wash them to remove stains, and also dries them with warm air after rinsing.

``Conventional technology'' Conventionally, there was a technology in which a fountain blade was rotatably installed at the bottom of the washing chamber where dishes were placed, a water storage tank was formed at the bottom of the washing chamber, and the water in the tank was blown up from the fountain blade to wash the dishes. .

[Problem to be solved by the invention J] In the prior art described above, a dust case is installed inside the washing chamber in which the fountain blades are arranged, and the dust adhering to the dishes is collected into the case by washing with water. If water flows into the dust case during subsequent rinsing, the rinsing water will easily get dirty, so it is necessary to remove the dust from the washing chamber before rinsing, or a structure is required to prevent the rinsing water from flowing into the dust case. There were problems in handling and structure.

``Means for Solving the Problems'' However, the present invention provides a dishwasher in which a fountain blade is installed inside a washing chamber in which dishes are placed, in which a dust case for receiving washed-off dust can be moved in and out of the washing chamber. The present invention is characterized in that the dust case is automatically moved to the outside of the cleaning chamber after the cleaning operation and before the rinsing operation ends.

``Function'' Therefore, by leaving the dust case from the washing chamber after the washing operation and before the rinsing operation ends, washing and rinsing can be performed continuously under automatic control, and the rinsing water can flow into the dust case. It is possible to prevent contamination, to have a simple structure without the need for switching the water circulation system, to be extremely hygienic, to simplify handling operations and to reduce manufacturing costs.

"Example" Hereinafter, an example of the present invention will be described in detail based on the drawings. 1st
The figure is a cross-sectional side view, showing a main body case (2) made of synthetic resin that forms the cleaning tank (1), and side covers (3) that are connected and fixed to the rear side and both left and right sides of the main case (2). , a lid cover (5) which is an upper lid forming a door with a single plate-shaped body having lattice-shaped protrusions (4) on the inner surface of the upper surface side, and a lid cover (5) on the upper surface and front surface. Extend the cleaning tank +
11 and each cover +31 +5) form a square box-shaped cleaning chamber (6), and a support shaft (7) on the rear edge of the upper surface.
The lid cover (5) can be opened and closed centering on the washing tank (1).
A shelf-like body (9) for storing tableware is installed so as to be freely accessible via guide rails (8) on both sides.

In addition, a water supply port (10) is opened at the bottom of the cleaning tank (11),
A water supply valve (12) having a water supply solenoid (11) is provided at the water supply port (10), and the water supply port (10) is connected via the valve (12) to a water supply hose (13) communicating with the water supply. The valve (12) is opened and closed to supply an appropriate amount of water into the cleaning tank (11).

In addition, a water storage tank (14) is formed at the bottom of the cleaning tank (1), a water intake case (15) is fixedly installed at the bottom of the tank (14), and the tank (14) and water intake case (15) are connected to each other to prevent swirling. The tank (16) communicates with the tank (
14) is equipped with a heater (17), and a spring (1
Attach the drawer stand (19) to be removed by step 8), place the removable dust case (20) on the drawer stand (19), and attach the dust case (20) to the upper surface of the tank (14) so that it can be taken out and put in freely. It is configured to collect dust by

In addition, a hollow water guide shaft (21) is installed approximately at the bottom of the cleaning tank (1).
), a fountain blade (23) having a plurality of injection nozzles (22)... is rotatably attached to the upper end of the water guiding shaft (21), and a water pump (25) has a built-in water blade (24). is installed on the lower surface side of the bottom of the cleaning tank (1), the forward rotation discharge port (26) of the pump (25) is connected in communication with the lower end of the water guide shaft (21), and the reverse rotation discharge port (27) of the pump (25) is connected in communication with the lower end of the water guiding shaft (21). ) and a check valve body (30) to the drain hose (29) connected to the sewer.
and one in which the drainage vibe (28) is connected via a secondary side drainage vibe (31), and a water suction vibe (32) communicated with the water intake case (15) is connected to the water suction side of the water pump (25). By rotating the water pump (25) in the normal direction, the water in the tank (14) is sent into the cleaning chamber (6) through the normal rotation discharge port (26), while by rotating the water pump (25) in the reverse direction, the water in the tank (14) is sent out into the cleaning chamber (6) through the normal rotation discharge port (26). Water reversing outlet (27)
It is configured so that it is discharged from the water to the sewer.

In addition, a control box (
33), and a start switch (34), stop switch (35), door open switch (36), etc. are installed.

Furthermore, as is clear from Figure 2, a drainage pipe (28
) is provided on the check valve body (30) with a check valve (38) that closes the outlet side of the water supply blade (
A drain valve (39) is provided at the reverse discharge outlet (27), which is closed by normal rotation of the pipe (24) and opened by reverse rotation, and the drain pipe (28) intermediate and the water absorption vibrator (32) intermediate are connected to each other. (It is connected by a return flow vibrator (40) with a smaller diameter than 321, and the forward rotation discharge port (26) of the water pump (25), which can be reversed forward and backward, is connected to the fountain blade (23).
A drain pipe (28) is connected to the reverse discharge port (27) of the water pump (25) via a drain valve (39).
A check valve body (30) is provided in the drain pipe (28), and the drain pipe (28) between the drain valve (39) and the check valve body (30) is connected to the water supply pump (2).
5) is connected to the water absorption side.

Furthermore, as is clear from FIG. 3, the dust case (2
A plurality of water leak holes (41)... are opened in the dust amount part of 0), and the dust case (20) is inserted into the notch (42) of the dust case (20) against the spring (18). a lock arm (43) that supports the device in the mounting position; and the notch (42).
A dust removal ratio mechanism (45) having a dust removal ratio solenoid (44) for escaping the lock arm (43) from the water pump (25) is provided.
), a dust case (20) for receiving washed-off dust is installed in and out of the washing chamber (6), and the dust case (20) is cleaned after the washing operation and before the rinsing operation is finished. The chamber (6) is configured to be automatically moved outward.

Further, a magnet (46) is embedded and fixed in the dust case (20), and the lock arm (43) is attached to the notch (4).
A dust amount sensor (47) such as a reed switch operated by a magnet (46) is fixedly supported on the main body case (2) at the mounting position where the sensor (47) is inserted into the dust case (20). When the attachment is detected, the water supply valve (12) and water pump (25) are operated based on the detection result of this sensor (47), and a dust case ( 20) is installed, and the sensor (47) is installed on the main body case (2) side away from the cleaning tank (1).

The part (49) is rotatably fitted and supported on the inner end surface of the boss part (49) of the fountain blade (23) to be fitted, and a thin ring (49) is provided on the upper surface side of the fountain blade (23) facing the boss part (49). A removable spray nozzle (2) is located approximately at the center of the fountain blade (23) facing the boss (49).
2), and when removing the fountain blade (23), the ring groove (5
0) to form an opening, or the central nozzle (
22) to form an opening, insert a jig through the opening, and remove the hook (48).
A fountain blade (23) communicating with the discharge port (26) of 5) is rotatably attached by a hook (48) serving as an engaging means.

Furthermore, as is clear from FIGS. 4 and 5, a cleaning motor (51) rotates the water pump (25) in forward and reverse directions.
and a wing portion (24a) which is integrally adhesively fixed.
) and a disk portion (24b), a shaft hole (53) is formed in the shaft portion (52) of the water supply blade (24), and a protrusion ring (54) for preventing removal and a key (55) are inserted into the shaft hole. (53) Provided inside.

Further, the motor (51) is provided with a rotary shaft (56) that is inserted into the shaft hole (53), and the key (55) is engaged with the wheel ring (57) into which the protruding ring (54) is engaged. Keyway (
58) is formed on the rotating shaft (56), and the shaft portion (
52) A spring (59) is elastically wound around the outer periphery, and the shaft part (
52) Wrap a spring (59) around the outer periphery, fix the shaft part (52) of the water supply blade (24) elastically to the rotation shaft (56) to be inserted, and attach the water supply blade (24) to the rotation shaft (56). Provide fixed support.

Furthermore, as is clear from Fig. 4, the dry solenoid (
The intake pipe (62) is connected to the water intake pipe (32) through the intake valve (61) having Pipe (62) and water absorption pipe (32)
Air is sucked into the water pump (25) through the water pump (25), and air is sent into the cleaning chamber (6) with high pressure air from the water pump (25) through the normal rotation discharge port (26) and the fountain blade (23). When the water pump (25) is idle, the air is drawn out from the fountain blade (23) into the washing chamber (6) to dry the dishes.

Further, a ventilation fan (63) is provided on the other end side of the rotating shaft (56) of the motor (51), and the fan (63) sends outside air into the intake pipe (62).
) is configured to assist the ventilation action.

Furthermore, as is clear from FIG. 6, there is also a lock body (67) that slides in and out of the notch (66) of the lid cover (5) through the bottle (64) and the elongated hole (65), and the output gear. (Auto lock motor (68) that reciprocates the lock body (67) via 68al and rack gear (68b)
and an interlock mechanism (71) equipped with an advance/retract switch (691f701) that controls the forward and reverse rotation of the motor (68), and the lock body (67) is engaged with the notch (66) to close the lid cover ( The lock body (67) is a locking means for regulating the opening operation of the lid cover (5), which is a door for taking in and out tableware.
), and the lock body (67) is configured to be released by operating the door open switch (36) or turning off the power.

Furthermore, as is clear from FIG. 7, a cleaning circuit (72) configured with a microcomputer is provided, and each of the switches (34) to [361 (691 (701) and the holder sensor (47) are connected to the circuit (72). At the same time, each solenoid fill (44) f601 is output connected to the circuit (72).
), and the heater (17) is output connected to the circuit (72), and the heater (17) is installed in the cleaning chamber (6).
It is configured to selectively use AC output and half-wave rectified output as a power source, and also has a forward rotation and reverse rotation circuit (75).
(The washing motor (51) is output-connected to the circuit (72) through the forward rotation and reverse rotation circuits (77) and (78), and the auto-lock motor (68) is output connected to the circuit (72) through the forward rotation and reverse rotation circuits (77) and (78). and drying are performed continuously and automatically.

The present embodiment is constructed as described above, and the lid cover (5) is opened and closed to move the shelf-like 'ffi 14] on which tableware is arranged into the washing room (
6), and also put the dust case (17) into the main body case (
2) and by operating the start switch (34), the water supply cleaning operation is started as shown in the flowchart of Fig. 8.
The water in the tank (14) is heated by a heater (17) which is continuously operated via the heater (17).

Then, by forward rotation of the water pump (25), the tank (
14) is sent to the fountain blade (23), and the water from the injection nozzle (
Water is jetted upwards from the washing chamber (6) from the washing chamber (6), and the jetting force of the water rotates the blades (23), and the jetted water hits the dishes and washes away the dirt.
The water that has splashed up to the ceiling in step 6) falls almost directly below from the surface of the protrusion (4), washing away the dirt on the tableware from the top side as well.

In addition, the sewage that has fallen to the cleaning tank + 1 + bottom is removed from the dust case (2
0) and returns to the tank (14), where the dust is collected and only water is circulated, washing the dishes for a certain period of time.

Furthermore, when the cleaning time has elapsed, the water pump (25)
is rotated in the reverse direction to discharge the dirty water from the tank (14), the water supply valve (12) is opened to supply new water, and the water supply pump (25) is rotated in the forward direction to perform the first rinsing. When the first rinsing operation is completed after a certain period of time, the dust removal solenoid (44) is activated and the dust case (20) is moved to the outside of the washing water circulation path by the spring (18) as shown in Fig. 3. At the same time, as in the 171st rinsing operation, the water in the tank (14) is replaced to perform the second rinsing operation and the third rinsing operation.

When the rinsing operation is completed, all the water in the tank (14) is drained, the heater (17) is intermittently operated via the half-wave rectifier circuit (74), and the drying solenoid (
60) opens the intake valve (61), runs the water pump (25) idly, and sends pressurized air into the cleaning chamber (6) through the normal rotation discharge port (26) and the fountain blade (23). , the dishes are dried by air heated by a heater (17).

Furthermore, as shown in the flowchart of FIG. 9, when the stop switch (35) is operated or the power is turned off,
Similar to operating the door open switch (36), the exit switch (
Auto lock motor (68) so that 70) is turned on
The lock body (67) is released from the notch (66) of the lid cover (5), and the start switch (
34) When the above cleaning operation is performed by operation, the auto-lock motor (68) is operated so that the advance switch (69) is turned on, and the notch (66) of the lid cover (5) is turned on.
) to fix and support the lid cover (5) in the closed position, thereby preventing the lid cover (5) from opening during cleaning.

"Effects of the Invention" As is clear from the above embodiments, the present invention provides a dishwasher in which a fountain blade (23) is installed inside the washing chamber (6) in which dishes are placed. The case (20) is provided so as to be freely accessible in and out of the cleaning chamber (6), and the dust case (20) is inserted into the cleaning chamber (6) after the cleaning operation and before the rinsing operation is finished.
) The dust case (20) is configured to move outward automatically after the cleaning operation and before the rinsing operation is completed, so that the cleaning and rinsing can be automatically controlled. Not only can the rinsing process be performed continuously, it can also prevent the rinsing water from flowing into the dust case (20) and contaminating it, and it can be configured simply and without the need to change the water circulation system, making it extremely hygienic. This provides practical effects such as simplifying handling operations and reducing manufacturing costs.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional side view showing a fifth embodiment of the present invention, Fig. 2 is an explanatory diagram of a water pump, Fig. 3 is an explanatory diagram of a dust case, Fig. 4 is an explanatory diagram of a fountain blade and a water pump, Figure 5 is an exploded view of the water supply blade, Figure 6 is an explanatory diagram of the interlock mechanism,
FIG. 7 is a control circuit diagram, and FIGS. 8 and 9 are flowcharts. (6)... Washing room (20
)... Dust case (23)... Fountain blade

Claims (1)

[Claims] In dishwashers that have fountain blades installed inside the washing chamber where dishes are placed, a dust case is installed that can be moved in and out of the washing chamber to receive the washed-off dust, and the dust case is removed after the washing operation and before the rinsing operation is finished. A dishwasher characterized in that the dishwasher is configured to automatically move outside the washing chamber.