JP2653254B2 - Dishwasher - Google Patents

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 a tableware stored in a tableware rack by spraying a washing liquid on the tableware.

[0002]

2. Description of the Related Art A conventional dishwasher is disclosed, for example, in Japanese Patent Publication No. 1-445365. That is, as shown in FIG. 16, a washing room B having an open front surface is provided at an upper portion of a casing A, and a garbage room C having an open front portion is provided at a lower portion like the washing room B. Further, an upper drawer F that supports a rack E for storing tableware D and that opens and closes a front opening of the washing room B is provided at the upper portion so as to be freely drawn out from the washing room B. The lower part supports a garbage container G for receiving the garbage falling from the rack E, and
The lower drawer H that opens and closes the front opening of the
It is provided so that it can be pulled out. The tableware D is placed on the rack E with both drawers F and H pulled out. At this time, the garbage remaining in the tableware D is dropped from the rack E to the garbage container G. By pushing the lower drawer H into the garbage room C, the garbage is stored in the garbage room C before the tableware D is washed. In this way, the operation of dumping the garbage in a garbage container or the like provided separately can be omitted. The tableware D from which the garbage has been dropped is washed by spraying the cleaning liquid pumped from the cleaning liquid pump K onto the cleaning liquid ejector J.

[0003]

In the conventional dishwasher shown in FIG. 16, for example, after the daily cleaning of the dishes D is completed, the cleaning of the inside of the cleaning chamber B and the cleaning liquid tank L is performed manually. There is a need to do. Therefore, there is a problem that it takes much time and effort. Further, with the upper and lower drawers F and H pulled out from the washing room B and the garbage room C,
In order to perform the operation of dropping the garbage from the rack E to the garbage container G, it is necessary to draw out the upper and lower drawers F and H each time the dish D is washed. For this reason, it takes time and effort to draw it out, and when the tableware D is placed on the rack E, the garbage is always in the field of view of the worker or the like, giving an unpleasant sensation or giving off an unpleasant odor to give an unpleasant odor. There are also problems.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dishwasher which can be easily processed in a washing machine, without giving an unpleasant odor or an unpleasant odor to a worker or the like, and without manual work. It is an object of the present invention to provide a dishwasher capable of performing washing.

[0005]

The present invention comprises a casing 1 having a cleaning chamber 2 and nozzle members 7 and 9 provided above and below the cleaning chamber 2 and having nozzle holes 91 and 92 directed into the cleaning chamber 2. And a cleaning liquid tank 5 arranged below the lower nozzle member 9 for storing the cleaning liquid, and a lower nozzle member 9 below the position where the tableware 3 to be cleaned in the cleaning chamber 2 is disposed. Is also disposed above, is openable and closable, closes between the cleaning chamber 2 and the lower nozzle member 9 in a closed state,
Guidance means 15 for guiding the delicatessen from tableware 3 to one side of the washing liquid tank 5 to communicate between the washing chamber 2 and the lower nozzle member 9 in an open state; A lid 12 provided on one side and opening and closing with respect to the washing chamber 2; and discharging means 6 and 18 provided below the lid 12 for collecting garbage and draining water, The means 15 is closed, the lid 12 is opened, and the cleaning liquid in the cleaning liquid tank 5 is jetted from the upper nozzle member 7 into the cleaning chamber 2 and drained from the discharge means 6 and 18, and a new cleaning liquid is supplied to the cleaning liquid tank 5. Then, the guiding means 15 is opened, the lid 12 is closed, the cleaning liquid in the cleaning liquid tank 5 is jetted from the upper and lower nozzle members 7, 9 and the cleaning liquid is circulated to clean the cleaning chamber 2 itself, and the guiding means 15 is closed. 12, the cleaning liquid in the cleaning liquid tank 5 is injected from the upper nozzle member 7 into the cleaning chamber 2. A dishwasher, characterized in that the drainage from the discharge means 6, 18.

[0006]

According to the present invention, a cleaning liquid tank 5 for storing a cleaning liquid is disposed below the cleaning chamber 2 of the casing 1. Above and below the position where the dishes 3 to be cleaned in the cleaning chamber 2 are arranged, nozzle holes 9 directed into the cleaning chamber 2 are provided.
Nozzle members 7, 9 having 1, 92 are arranged respectively. It is openable and closable below the tableware 3 and above the lower nozzle member 9, and guides the garbage from the tableware 3 to one side in a closed state, and the cleaning chamber 2 and the lower side in an open state. Guidance means 15 for communicating with the nozzle member 9 is arranged. With the guiding means 15 closed, the cleaning liquid injected into the cleaning chamber 2 from the upper nozzle member 7 removes the residual food attached to the tableware 3 and is guided to one side by the guiding means 15. A lid 12 that opens when the guiding means 15 closes is provided on one side thereof, and discharging means 6 and 18 for collecting residual vegetables and draining water are provided below the lid 12. Guidance means 1
By opening the lid 5 and closing the lid 12, the cleaning liquid in the cleaning liquid tank 5 is sprayed from the upper and lower nozzle members 7, 9 to wash the tableware 3 while circulating and using the cleaning liquid. In this way, after collecting the residual vegetables and the like adhered to the tableware 3, the tableware 3 can be washed.

The cleaning liquid stored in the cleaning liquid tank 5 is ejected from the upper nozzle member 7 into the cleaning chamber 2 with the opening / closing means 15 closed and the lid 12 opened, so that the cleaning liquid is discharged from the discharging means 6 and 18. Can be drained. Thus, the cleaning liquid is supplied to the cleaning liquid tank 5 from which the cleaning liquid has been discharged. By opening the guiding means 15 and closing the lid 12, the supplied cleaning liquid is ejected from the upper and lower nozzle members 7, 9, and the cleaning liquid can be circulated to clean the cleaning chamber itself. In this way, the cleaning liquid that has cleaned the cleaning chamber 2 itself is drained from the discharging means 6 and 18 by closing the guiding means 15, opening the lid 12, and spraying the cleaning liquid from the upper nozzle member 7 into the cleaning chamber 2. be able to.

[0008]

1 and 2 show the structure of a dishwasher according to an embodiment of the present invention. FIG. 1 is a schematic sectional view, and FIG. 2 is a block diagram showing an electrical configuration.

A cleaning chamber 2 is formed in an inner housing 1a constituting an inner wall of the casing 1. Cleaning room 2
Inside, a tableware rack 3a on which the tableware 3 is mounted can be accommodated. A door 4 is provided at the front of the cleaning chamber 2, that is, at the opening on the near side in FIG. The tableware rack 3a is loaded / unloaded with the door 4 opened, and the preshower, which is a process for collecting residual vegetables from the tableware 3, and the tableware 3 is washed with the tableware rack 3a closed.

A cleaning liquid tank 5 is provided below the cleaning chamber 2, and a garbage tank 6 is provided beside the cleaning liquid tank 5. The water level in the cleaning liquid tank 5 is detected by a float switch 5a. In the garbage tank 6, a draining container 6a formed of, for example, a perforated plate such as perforated metal is accommodated in a removable manner. The draining container 6a receives the garbage and allows moisture to pass therethrough. When the garbage collected in this manner is stored, the drainer 6a is taken out of the garbage tank 6 and disposed of in an external trash box.

An overflow pipe 8 is provided in the cleaning liquid tank 5 below the cleaning chamber 2 to limit the water level of the cleaning liquid tank 5.
An upper nozzle member 7 having an upper nozzle hole 91 is provided above the cleaning chamber 2. A lower nozzle member 9 having a lower nozzle hole 92 is provided above the cleaning liquid tank 5 and below the cleaning chamber 2. Above the cleaning chamber 2, an upper rinse water nozzle member 10 is provided adjacent to the upper nozzle member 7. A lower rinse water nozzle member 11 is provided below the cleaning chamber 2 adjacent to the lower nozzle member 9. Upper and lower rinse water nozzle member 1
0 and 11 have nozzle holes 20. These nozzle members 7, 9; 10, 11 rotate by jetting the liquid toward the tableware 3 from the nozzle holes 20, 91, 92, and uniformly spray the liquid to the tableware 3 mounted on the tableware rack 3a. be able to. A lid 12 is provided at the upper opening of the garbage tank 6. When the lid 12 is closed, the upper and lower nozzle members 7,
9; 10 and 11 can be prevented from entering the garbage tank 6.

Below the tableware rack 3a, the nozzle members 9,
Above 11, guide means 15 including a plurality of dampers 14 that can be angularly displaced about rotation axis 13 is provided. The damper 14 can open and close between the tableware rack 3a and the lower nozzle members 9 and 11. The lid 12 of the garbage tank 6 is opened and closed in a reversible manner in conjunction with opening and closing of the damper 14.
When the damper 14 is opened, it is opened when the shutter 4 is closed. When the damper 14 is closed, the tableware 3
The garbage falling upward is guided and guided on the damper 14 and is collected in the draining container 6a in the garbage tank 6. After such a process of collecting residual vegetables, the tableware 3 is washed by the upper and lower nozzle members 7 and 9 with the damper 14 opened and the lid 12 closed.

The processing for collecting residual vegetables is performed by spraying water or a cleaning liquid from a spray nozzle or the like, which is a pre-shower means 16 provided above the washing chamber 2. Although the garbage collection process can be performed by spraying the cleaning liquid from the upper nozzle member 7, by providing the pre-shower means 16, water or the cleaning liquid is supplied to the tableware 3 under conditions particularly suitable for the garbage collection process. Can be sprayed on the surface, and the efficiency of cleaning can be improved.

When washing of the tableware 3 is completed, rinse water is sprayed from the upper and lower rinse water nozzle members 10 and 11. The rinsing water removes the washing liquid attached to the tableware 3 and cleans the tableware 3. Such rinsing water is stored in the cleaning liquid tank 5, and its water level is limited by the overflow pipe 8. The liquid exceeding the water level is drained through an external drain pipe 17 connected to the overflow pipe 8. The drainage pipe 18 from the garbage tank 6 is also connected to the external drainage pipe 17, and the water that has passed through the drainage container 6a is drained. The garbage tank 6 and the drain pipe 18 are included in the discharging means.

The cleaning liquid in the cleaning liquid tank 5 is supplied to the cleaning pump P2.
Upper and lower nozzle members 7, 9 via a circulation line 9a.
And injected from the nozzle holes 91 and 92. A pre-shower liquid tank T1 and a rinsing water tank T2 are provided inside the casing 1 and outside the internal housing 1a.
The pre-shower liquid is stored in the pre-shower liquid tank T1, and is pumped to the pre-shower means 16 by the pre-shower pump P1 via the pre-shower liquid pipe 16a. The pre-shower liquid is replenished through the water supply pipe 21,
The water level in the pre-shower liquid tank T1 is controlled by a float switch T1a. The rinsing water from the rinsing water tank T2 is pumped by the rinsing pump P3 to the upper and lower rinsing water nozzle members 10, 11 via the rinsing water pipe 10a. Rinsing water is supplied to the rinsing water tank T2 via the water supply pipe 22, and its level is controlled by the float switch T2a. The rinse water in the rinse water tank T2 is heated to about 80 ° C. by the heater T2b. Water can be directly supplied into the cleaning chamber 2 via the water supply pipe 23. These water pipes 21, 22, 23
Are provided with solenoid valves SV1, SV2, SV4, respectively.

When the pre-shower pump P1 or the rinsing pump P3 operates, the operating pressure of the cylinder C
Y is activated, and the damper 14 is driven via an interlock mechanism (not shown).
And the rotation shaft 27 of the lid 12 are rotationally driven. That is, the cylinder CY is displaced to one side by the discharge pressure from the pre-shower pump P1, closing the damper 14 and opening the lid 12. The cylinder CY is displaced to the other side by the discharge pressure when the rinsing pump P3 is operated, and the damper 1
4 opens and the lid 12 closes. In this way, the damper 14 closes during the pre-shower, and after the pre-shower,
The damper 14 can be opened when cleaning is started while replenishing the washing liquid tank with rinsing water.

Each operation described above is controlled by the processing means 121 shown in FIG. Processing means 12
Reference numeral 1 includes a microcomputer and operates according to a predetermined program. The processing means 121 includes:
Outputs from the preparation switch SW1, the door switch SW2, and the cleaning switch SW3 are provided. The output from the cleaning operation end switch SW4 is supplied to the cleaning control unit 122. The cleaning control unit 122 controls the above-described cleaning operation of the cleaning chamber 2 itself, and outputs a signal representing the result to the processing unit 12.
Give to 1. The processing means 121 responds to the output given by the pumps P1, P2, P3 and the solenoid valves SV1, S1.
V2, SV4 and the like are controlled to execute the various operations described above.

FIG. 3 is a time chart for explaining the operation in the embodiment shown in FIG. Preparation switch S
By turning on W1, initial water supply is performed.
The door switch SW2 is provided to confirm that the door 4 has closed the cleaning chamber 2. When the door 4 is opened, the injection of the cleaning liquid or the like from the nozzle is stopped.

After the initial water supply is completed, the tableware 3 is stored in the washing room 2 and the washing switch SW3 is pressed. Thereby, washing of the tableware 3 in each of the pre-shower, washing, and rinsing steps is performed continuously.

For example, when the cleaning of the tableware 3 for one day is completed, when the cleaning operation end switch SW4 is pressed, the cleaning in the cleaning chamber 2 and the drainage of the cleaning liquid in the cleaning liquid tank 5 are performed.

FIGS. 4 and 5 show the structure of a dishwasher according to another embodiment of the present invention. FIG. 4 is a schematic sectional view, and FIG. 5 is a schematic block diagram. 1 and 2 are designated by the same reference numerals. It should be noted that the pre-shower is performed by the upper nozzle member 7 and the cleaning pump MP1.

A motor MD capable of normal and reverse rotation is provided below the washing chamber 2. A pulley 24 is fixed to a shaft of the motor MD, and a belt 25 is wound around the pulley 24. The belt 25 is wound around a pulley 26 fixed to one of the rotation shafts 13 of the damper 14 and a pulley 28 fixed to a rotation shaft 27 of the lid 12. In this way, the damper 14 and the lid 12 open and close in a reversible manner in accordance with the rotational drive of the motor MD.

When the front opening of the cleaning chamber 2 is closed by the door 4, it is detected by a door switch 29 such as a micro switch. A cleaning liquid tank 5 and a rinsing water tank 30 are provided below the cleaning chamber 2. The water level in these tanks
The cleaning liquid tank water level detecting means 31 and the rinsing water tank water level detecting means 32, which detect the water surface position based on the change in electric resistance, are respectively detected. These water level detecting means 31,
Of course, 32 may be a float switch or the like. The cleaning liquid in the cleaning liquid tank 5 is supplied to the cleaning liquid tank temperature detecting means 3.
The temperature is detected by 3 and heated by the cleaning liquid heater 34 to adjust the temperature to about 60 ° C. The temperature of the rinsing water in the rinsing water tank 30 is detected by the rinsing water tank temperature detecting means 35, heated by the rinsing water heater 36, and maintained at about 80 ° C. Rinsing water is supplied to the rinsing water tank 30 via a water supply pipe 38 provided with an electromagnetic valve 37.

The control of each section described above is performed by a control circuit 39. The control circuit 39 includes a microcomputer, a memory, and the like, and controls each unit according to a preset program. A timer 40 is provided for temporal control.

When performing the rinsing, in order to prevent the concentration of the detergent contained in the cleaning liquid in the cleaning liquid tank 5 from being diluted by the rinsing water, the detergent is supplied outside the cleaning liquid tank 5 in accordance with the rinsing water. Diaphragm pump 1 for performing
01 is provided. The diaphragm pump 101 is
It has a diaphragm 102 that divides the internal space into two, and one of the two halves is connected to the discharge side of the rinsing pump MP2 via a pressure tube 103. Diaphragm pump 1
Detergent is supplied from the detergent tank 105 to the other of the space in 01 through the check valve 104. Rinse pump MP2
When the diaphragm 102 is displaced to the right in FIG. 1 by the discharge pressure thereof, the detergent is supplied to the cleaning liquid tank 5 via the check valve 106 and the supply pipe 107. When the operation of the rinsing pump MP2 is stopped, the diaphragm 102
Of the detergent tank 1 returns to the original state via the check valve 104.
The detergent in 05 is injected. In this way, the detergent is supplied in accordance with the amount of the rinsing water supplied to the cleaning liquid tank 5.

FIG. 6 is a flowchart for explaining the operation of the control circuit 39 in the embodiment shown in FIGS. When the tableware 3 is mounted on the tableware rack 3a, housed in the washing room 2, and the door 4 is closed, the door switch 29 is operated. Thus, the operation from step s1 is started. At this time, it is assumed that the motor MD is driven, the damper 14 is closed, and the lid 12 is open.

Next, in step s2, the cleaning pump MP1
The cleaning liquid is jetted from the upper and lower nozzle members 7 and 9. Since the damper 14 is closed, only the cleaning liquid from the upper nozzle member 7 is sprayed on the tableware 3. The cleaning liquid from the lower nozzle member 9 returns to the cleaning liquid tank 5. The garbage adhered to the tableware 3 is washed away by the washing liquid, guided and guided on the damper 14, and collected in the draining vessel 6a in the garbage tank 6. Such a process for collecting residual vegetables is continued for t1 seconds in step s3. The pre-shower time t1 is, for example, 3 to 4 seconds. After the elapse of the time t1, the cleaning pump MP1 is turned off in step s4.
FF is performed. In this way, the pre-shower ends. The cleaning liquid that has washed the garbage passes through the draining container 6a and is discharged to the external drain pipe 17 via the drain pipe 18.

Next, in step s5, the motor MD is reversed, the damper 14 is opened, and the lid 12 is closed. Next, in step s6, the cleaning pump MP1 is turned on, and the tableware 3 is cleaned by spraying the cleaning liquid from the upper and lower nozzle members 7, 9. This cleaning liquid is stored in the cleaning liquid tank 5 and used by circulating. In step s7, t
It is determined whether the cleaning time of 2 seconds has elapsed. The cleaning time t2 is, for example, 90 seconds. This cleaning time t
After 2 elapses, in step s8, the cleaning pump MP
1 is turned off. Next, in step s9, the process waits for t3 seconds. The time t3 is, for example, 3 seconds, and is provided for sufficiently dropping the cleaning liquid from the tableware 3.
In this way, the tableware 3 is washed.

Next, in step s10, the rinsing pump MP2 is turned on, and the upper and lower rinsing water nozzle members 10,
From 11 rinsing water is sprayed on the tableware 3. This rinsing is performed for t4 seconds in step s11. This time t4 is, for example, 17 seconds. Next, step s1
At 2, the rinse pump MP2 is turned off. When the rinsing is completed, in step s13, the motor MD
Is driven, the damper 14 closes and the lid 12 opens. The rinsing is performed in this manner, and the clean tableware 3 can be taken out by opening the door 4. Further, the tableware 3 to be washed next is prepared, and the operations from step s2 on are continuously performed.

FIG. 7 is a sectional view showing a structure relating to the damper 14 and the lid 12 in the embodiment shown in FIGS. Rotating shaft 13 of four dampers 14 in a closed state
Are frames 41 and 42 provided above cleaning solution tank 5.
Rotatably mounted on the The frames 41 and 42 are a fixed frame 41 on the right side of FIG.
Is divided into two. Two dampers 14 are attached to the fixed frame 41 and the open / close frame 42, respectively. The movable pieces 43 to 48 are fixed to each damper 14. The movable pieces 43 to 48 are connected to each other by connecting pieces 49 to 51.
Linked by Movable pieces 43-48 and connecting pieces 49-
The connection point 51 is freely angularly displaceable. The movable pieces 43 to 48 and the connection pieces 49 to 51 constitute a link 52. The opening / closing frame 42 can be opened upward in FIG. 7 around the hinge 53 by removing the connecting piece 50. A belt 25 is provided between the pulleys 26 and 28.
There is provided an idler 54 for applying tension to the shaft.

FIG. 8 shows a configuration for detecting the open / closed state of the damper 14. A detection piece 55 is attached to the rotating shaft 13 to which the pulley 26 is fixed. The detection piece 55 is
When the rotation shaft 13 is angularly displaced and the damper 14 is closed as shown in FIG. 8A, the micro switch 56 is operated. When the rotation shaft 13 is angularly displaced and the damper 14 is opened as shown in FIG. 8B, the detection piece 55 activates the micro switch 57. Such a microswitch 5
6, 57, the open / closed state of the damper 14 is detected. The rotation shaft 27 is rotationally driven by the belt 25 and the pulley 28, and the lid 12 closes when the damper 14 opens, and opens when the damper 14 closes. The micro switches 56 and 57 are mounted on the upper portion of the cleaning liquid tank 5 via the mounting member 93.

FIG. 9 is an exploded perspective view showing a structure related to the damper 14. As shown in FIG. The damper 14 is formed by a rectangular metal plate, and is fixed to the rotating shaft 13. The edge of the metal plate parallel to the rotation axis 13 is bent to increase rigidity. In addition, since the periphery is rounded by being bent in this manner, it is difficult for remaining vegetables and the like to be caught. Movable piece 4
The pins 3 to 48 and the connecting pieces 49 to 51 are rotatably connected to each other by the pin members 58 being fixed by the fixing nuts 60 via the washers 59. The rotating shaft 13 is attached to the holder 6
1 and fixed to the frames 41 and 42 and the rotating shaft 13
Are fixed to the damper 14 by bolts 62.

FIG. 10 is an exploded perspective view showing a structure for mounting the frames 41 and 42 to which the damper 14 is mounted on the upper portion of the cleaning liquid tank 5. The fixed frame 41 is fixed to a frame receiver 63 above the cleaning liquid tank 5 by bolts 64. The opening / closing frame 42 is held by a support member 65. A guide hole 66 is provided in the opening / closing frame 42, and a bolt 67 projecting from the support member 65 is attached to the guide hole 6.
Positioning is performed by fitting to 6.

The lid 12 is attached to the side of the opening / closing frame 42. The rotating shaft 27 of the lid 12 is fixed above the garbage tub 6 by a mounting member 68. The mounting member 68 is fixed to the holding member 7 by bolts 70 together with the cover member 69.
Fixed to 1.

FIG. 11 is a perspective view showing the structure of a hinge 53 for connecting the fixed frame 41 and the opening / closing frame 42. The hinge 53 includes a fixed arm 72 fixed to the fixed frame 41, an opening / closing arm 73 fixed to the opening / closing frame 42, a pin member 74 connecting between these arms 72, 73, and a stopper for the pin member 74. And an E-ring 75 for Open / close frame 42
Can be opened by angular displacement about the connection point between the fixed arm 72 and the opening / closing arm 73.

The operation of the guiding means 15 will be described with reference to FIGS.
3 will be described. FIG. 12 shows a state where the damper 14 is opened and the lid 12 is closed. Each damper 14 becomes substantially vertical, and the cleaning liquid sprayed from the lower nozzle member 9 can reach the tableware 3 mounted on the tableware rack 3a. The cleaning liquid drops between dampers 14 together with the cleaning liquid jetted from the upper nozzle member 7 and is stored in the cleaning liquid tank 5. The pump MP1 sends the cleaning liquid in the cleaning liquid tank 5 to the upper and lower nozzle members 7 and 9 under pressure, and ejects the cleaning liquid again. That is,
With the damper 14 opened, the tableware 3 is cleaned by circulating the cleaning liquid. FIG. 13 shows a state in which the opening / closing frame 42 to which the damper 14 is attached is opened upward. At this time, the connection point between the center connecting piece 50 and the connecting piece 46 on the opening / closing frame 42 side is disconnected. By removing one portion of the link 52 in this manner, the opening / closing frame 42
Can be opened by angular displacement about the hinge 53. As shown in FIG. 14, a strainer pan 7 formed of a perforated plate for repairing dust such as garbage mixed in the cleaning liquid is provided in the cleaning liquid tank 5 below the opening / closing frame 42.
6 and a pump inlet filter 77 are provided. By opening the opening / closing frame 42, the strainer pan 76 is opened.
And maintenance work such as cleaning of the pump suction port filter 77. Further, it is also possible to drain the cleaning liquid in the cleaning liquid tank 5 by removing the drain plug 8a at the lower part of the overflow pipe 8.

FIG. 15 is a flow chart for explaining the operation for cleaning the cleaning chamber 2 and draining the cleaning liquid in the cleaning liquid tank 5 in the embodiment shown in FIG. In step a1, when it is instructed to perform cleaning in the cleaning chamber 2,
In step a2, the opening / closing means 15 is closed, and the lid 12 is opened. Next, in step a3, the parameter m is initialized to 3. Next, in step a4, the cleaning pump MP1 is turned on. Next, in step a5, the value of the parameter m is reduced by 1 and the value of the parameter n is initialized to 2. Next, in step a6, the process waits until t5 seconds have elapsed. This time t5 is, for example, 20 seconds,
During this time, the cleaning liquid in the cleaning liquid tank 5 is jetted from the upper nozzle member 7 and drained to the external drain pipe 17 via the garbage tank 6. After elapse of t5 seconds, the cleaning pump MP1 is turned off in step a7, and the first drainage process ends.

In the next step a8, the opening / closing means 1
5 is changed from the closed state to the open state, and the lid 12 is changed from the open state to the closed state.

In the next step a9, the water level in the rinsing water tank 30 is detected by the rinsing water tank water level detecting means 32. When the water level is insufficient, step a
The operation proceeds to 10, where the solenoid valve 37 is opened, and the rinsing water is supplied into the rinsing water tank 30 via the water supply pipe 38. In this way, the rinsing water in the rinsing water tank 30 is supplied.

Next, at step a11, the solenoid valve 37
Is closed, and the rinse pump MP2 is turned on. As a result, the rinsing water is sprayed from the upper and lower rinsing water nozzle members 10 and 11 into the cleaning chamber 2 and stored in the cleaning liquid tank 5. At this time, the detergent corresponding to the rinse water is also supplied into the cleaning liquid tank 5 through the diaphragm pump 101. Next, in step a12, the parameter n is decreased by one. Next, in step a13, the supply of rinsing water is continued until t6 seconds have elapsed. This time t6 is, for example, 17 seconds. Next, in step a14, the rinse pump MP2 is turned off, and the supply of the rinse water is stopped. Next, in step a15, it is determined whether or not the parameter n has become 0. If the parameter n has not become 0, the process returns to step a9. That is,
The operations from step a9 to step a14 are performed twice.

Next, in step a16, the cleaning pump M
P1 is turned on. In the next step a17, the parameter m is decreased by one. In the next step a18, t
Wait for 7 seconds to elapse. This time t7 is, for example, 30
Seconds. That is, the cleaning of the cleaning chamber 2 itself is performed for t7 seconds. Next, in step a19, the opening / closing means 15 is changed from the open state to the closed state, and the lid 12 is changed from the closed state to the open state. Next, step a20
Waits for the time t8 to elapse. This time t8 is, for example, 20 seconds. Next, in step a21, the cleaning pump MP1 is turned off. That is, step a1
In steps 9 to a21, the cleaning liquid in the cleaning liquid tank 5 is drained from the discharging means 6, 18.

Next, at step a22, it is determined whether or not the parameter m is 0. Parameter m
If is not 0, the parameter n is re-initialized to 2 in step a23, and the process returns to step a7. Thus, in step a24, the cleaning of the cleaning chamber 2 itself corresponding to the initial setting value 3 of the parameter m is performed three times. The value of the parameter m may be determined according to the number of times of cleaning the cleaning chamber 2 itself. The value of the parameter n is determined by the volume ratio between the cleaning liquid tank 5 and the rinsing water tank 30.
In this embodiment, the initial value of the parameter n is set to 2 since the necessary cleaning liquid is stored by replenishing the rinsing water from the rinsing water tank 30 twice to the cleaning liquid tank 5.

[0043]

As described above, according to the present invention, it is possible to easily carry out a process of collecting residual vegetables adhering to tableware in a washing machine, without giving an uncomfortable feeling or an unpleasant odor to workers or the like. Further, the cleaning of the cleaning chamber itself can be performed without manual operation, and the workability is improved.

The washing of the washing chamber itself can be carried out by draining the washing liquid stored in the washing liquid tank and then using the newly supplied washing liquid. Therefore, the washing with the clean washing liquid which is not used for washing tableware. can do.
Further, since the cleaning liquid is drained from the discharge means by closing the guide means and opening the lid, it is possible to prevent the cleaning liquid from being stored in the cleaning liquid tank. Therefore, cleaning and repair of the cleaning liquid tank can be easily performed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a schematic configuration of a dishwasher according to one embodiment of the present invention.

FIG. 2 is a block diagram illustrating an electrical configuration of the dishwasher illustrated in FIG. 1;

FIG. 3 is a time chart for explaining the operation of the embodiment shown in FIG. 1;

FIG. 4 is a cross-sectional view illustrating a schematic configuration of a dishwasher according to another embodiment of the present invention.

FIG. 5 is a block diagram showing a schematic electrical configuration of the embodiment shown in FIG. 4;

FIG. 6 is a flowchart for explaining the operation of the dishwasher of the embodiment shown in FIG. 4;

FIG. 7 is a cross-sectional view showing a configuration related to the guiding means 15 in the embodiment shown in FIG.

FIG. 8 is a cross-sectional view for explaining the operation of the damper 14 and the frames 41 and 42.

FIG. 9 is an exploded perspective view showing a state where the damper 14 is attached to the fixed frame 41 and the opening / closing frame 42. FIG.
0 is an exploded perspective view for explaining a state in which the fixed frame 41 and the opening / closing frame 42 are attached to the casing 1.

FIG. 11 is an exploded perspective view for explaining a configuration related to a hinge 53.

FIG. 12 is a cross-sectional view for explaining a state when the damper 14 is open.

FIG. 13 is a sectional view for explaining a state in which the opening / closing frame 42 is opened.

FIG. 14 is a cross-sectional view showing a configuration inside a cleaning liquid tank 5.

FIG. 15 is a flowchart for explaining a cleaning operation in the cleaning chamber 2 in the embodiment shown in FIG.

FIG. 16 is a cross-sectional view illustrating a conventional dishwasher.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 2 Cleaning room 3 Tableware 4 Door 5 Cleaning liquid tank 6 Garbage tank 7 Upper nozzle member 8 Overflow pipe 10 Lower nozzle member 10 Upper rinsing water nozzle member 11 Lower rinsing water nozzle member 12 Lid 14 Damper 15 Guidance means 16 Preshower means 18 Drain pipe 20, 91, 92 Nozzle hole 30 Rinsing water tank 31 Cleaning liquid tank water level detecting means 32 Rinsing water tank water level detecting means 33 Cleaning liquid tank temperature detecting means 34 Cleaning liquid heater 35 Rinsing water tank temperature detecting means 36 Rinsing water heater 37 Solenoid valve 38 Water supply pipe Reference Signs List 39 Control circuit 40 Timer 101 Diaphragm pump 105 Detergent tank 107 Supply pipe 121 Processing means 122 Cleaning control means MP1, P2 Cleaning pump MP2, P3 Rinse pump

Claims (1)

(57) [Claims] 1. A casing 1 having a cleaning chamber 2, nozzle members 7 and 9 provided above and below the cleaning chamber 2 and having nozzle holes 91 and 92 directed into the cleaning chamber 2, and a lower nozzle member 9 And a cleaning liquid tank 5 for storing the cleaning liquid, and a cleaning liquid tank 5 in the cleaning chamber 2, which is disposed above the lower nozzle member 9 below the position where the tableware 3 to be cleaned is disposed and can be opened and closed. In the closed state, the space between the cleaning chamber 2 and the lower nozzle member 9 is closed, and the garbage from the tableware 3 is guided and guided to one side of the cleaning liquid tank 5. Guiding means 15 for communicating between the second nozzle member 9 and the lower nozzle member 9
A lid 12 provided on the one side of the cleaning liquid tank 5 and opening and closing with respect to the cleaning chamber 2; and a lid 12 provided below the lid 12;
Discharging means 6 and 18 for collecting residual vegetables and draining water; closing the guiding means 15 and opening the lid 12 to transfer the cleaning liquid in the cleaning liquid tank 5 from the upper nozzle member 7 into the cleaning chamber 2. The cleaning liquid is supplied from the discharging means 6 and 18, and a new cleaning liquid is supplied to the cleaning liquid tank 5, the guiding means 15 is opened, the lid 12 is closed, and the cleaning liquid in the cleaning liquid tank 5 is injected from the upper and lower nozzle members 7 and 9. Then, the cleaning liquid is circulated to clean the cleaning chamber 2 itself, the guiding means 15 is closed, the lid 12 is opened, and the cleaning liquid in the cleaning liquid tank 5 is jetted from the upper nozzle member 7 into the cleaning chamber 2 and discharged. Dishwasher characterized by draining water from, 18.