JP4522891B2 - Dishwasher - Google Patents

Description

  The present invention relates to a dishwasher for washing dishes.

  Usually, in a dishwasher provided with a water storage tank inside the dishwasher body, used washing water is drained in the washing step and the rinsing step (see, for example, Patent Document 1). In general, a water storage tank of a dishwasher is provided with a drainage stopper, and the drainage stopper can be opened for maintenance and cleaning.

Japanese Unexamined Patent Publication No. 2001-57956 (page 3, FIG. 1)

  Even after the washing water was stored in the water storage tank, the washing process and the rinsing process had to be completed even when it was desired to drain the washing water. In addition, in order to drain the washing water, the water storage tank had to be removed from the dishwasher body and the drain plug had to be opened. Thus, after storing the wash water in the water storage tank, the wash water could not be drained by a simple operation.

  There has been a request from the user to drain the wash water with a simple operation even after the wash water is stored in the water storage tank. In addition, if the washing process and the rinsing process have to be performed only to drain the washing water, there is a problem that power consumption is wasted more than necessary.

  The present invention has been made to solve the above-described problems, and provides a dishwasher capable of draining wash water in a water storage tank with a simple operation from a user.

A dishwasher according to the present invention includes a washing tank for storing dishes to be washed, a water storage tank for storing washing water, and a water supply pump for supplying the washing water stored in the water storage tank to the washing tank. And a washing pump for washing the tableware, a drainage pump for draining the washing water of the washing tank, and a control means for controlling the water supply pump, the washing pump, and the drainage pump. When the washing water stored in the water storage tank is drained out of the dishwasher, the control means stops the water supply pump and the drainage pump without operating the washing pump. It is characterized in that the operation is alternately performed at predetermined time intervals through the control , and the operation is controlled to be repeated a predetermined number of times .

A dishwasher according to the present invention includes a washing tank for storing dishes to be washed, a water storage tank for storing washing water, and a water supply pump for supplying the washing water stored in the water storage tank to the washing tank. And a washing pump for washing the tableware, a drainage pump for draining the washing water of the washing tank, and a control means for controlling the water supply pump, the washing pump, and the drainage pump. When the washing water stored in the water storage tank is drained out of the dishwasher, the control means stops the water supply pump and the drainage pump without operating the washing pump. Since the operation is alternately performed at predetermined time intervals and the operation is controlled to be repeated a predetermined number of times , the washing water can be drained with a simple operation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an installation state diagram showing an example of an installation state of the dishwasher 50 according to the embodiment of the present invention. The dishwasher 50 temporarily stores water or hot water (hereinafter collectively referred to as “washing water”) for washing, and heats the washing water to a predetermined temperature (for example, 90 ° C.), The dishes are washed with the heated washing water for a predetermined time, and when the washing is completed, the dishes are rinsed and finally the dishes are dried.

  A main body 1 of the dishwasher 50 is installed on a countertop 60 of a kitchen, and a door 3 and an operation unit 2 are provided on the front surface. Further, the main body 1 includes a water supply pipe 4 provided with a water receiving port 5 for receiving water supplied from the faucet 7 and hot water supplied from a water heater (not shown), and a drain hose 6 for draining to the sink 8. Is provided.

  The main body 1 stores a predetermined amount (for example, 6 liters) of washing water, then heats the water to a predetermined temperature (for example, 90 ° C.), and cleans the dishes with the heated washing water for a predetermined time. When the washing is finished, the dishes are rinsed and finally the dishes are dried. The series of steps of heating, washing, rinsing and drying will be referred to as a normal washing step.

FIG. 2 is a schematic cross-sectional view showing the internal configuration of the main body 1 of the dishwasher 50.
The main body 1 includes a water supply pipe 4 that allows the cleaning water 12 to flow into the water storage tank 10 from the faucet 7, a water storage tank 10 that communicates with the water supply pipe 4 and stores a predetermined amount of the cleaning water 12, and the cleaning water 12 is cleaned from the water storage tank 10. A water supply path 18 for supplying to the tank 9, a cleaning tank 9 for storing the dishes to be cleaned, and a drainage path 24 connected to the drainage hose 6 for discharging the cleaning water 12 used in the cleaning tank 9 are provided. . The main body 1 is provided with a control means 27 (not shown) which will be described in detail after controlling the whole.

  The water supply pipe 4 allows the cleaning water 12 to flow into the water storage tank 10 from the faucet 7. Further, a water receiving port 5 is provided at the tip of the water supply pipe 4 on the faucet 7 side so that the cleaning water 12 from the water supply source can easily flow into the water supply pipe 4. Here, the case where the water supply source is a tap water faucet (faucet 7) will be described as an example, but the present invention is not limited to this. Alternatively, water or hot water may be supplied to the water storage tank 10 by connecting a water heater.

  The water storage tank 10 includes a heater 16, a water level sensor 13, and a temperature sensor 15. In addition, the water storage tank 10 is desirably formed in a size (for example, about 6 liters) that can store the cleaning water 12 necessary for one normal cleaning process. The heater 16 as a heating means heats the washing water 12 stored in the water storage tank 10. Here, the case where the heater 16 is incorporated in the water storage tank 10 will be described as an example. However, the present invention is not limited to this, and the heater 16 may be provided outside the water storage tank 10. The heater 16 is started / stopped by the control means 27.

  The water level sensor 13 which is a water level detection means detects the water level of the wash water 12 stored in the water storage tank 10. Here, the case where the water level sensor 13 is a float type having a float will be described as an example. However, the present invention is not limited to this, and the water level sensor 13 is a fixed type water level sensor fixed at a plurality of locations as long as the water level can be detected. It may be configured. Moreover, the full water level 14 has shown the quantity of the washing water 12 suitable for one normal washing | cleaning process. The maximum capacity that can be stored in the water storage tank 10 is determined by the position of the overflow port 11 where the wash water overflows (the position is higher than the full water level 14). The detection information of the water level sensor 13 is transmitted to the control means 27.

  The temperature sensor 15 which is a temperature detection means detects the temperature of the washing water 12 stored in the water storage tank 10 and may be configured with a thermistor or the like. The detection information of the temperature sensor 15 is transmitted to the control means 27 and used for controlling the heater 16.

  The cleaning water 12 stored in the water storage tank 10 is supplied to the cleaning tank 9 by a water supply pump 17. That is, when the control unit 27 operates the water supply pump 17, the predetermined amount of the cleaning water 12 stored in the water storage tank 10 is supplied to the cleaning tank 9 through the water supply path 18. The cleaning water 12 flows into the cleaning tank 9 from a water supply port 19 provided in the cleaning tank 9.

  The cleaning tank 9 includes at least a cleaning pump 20, a cleaning nozzle 21, a circulation water channel 22, a blower fan 25, and a drainage pump 23. The washing tub 9 stores the dishes to be washed and is where the dishes are actually washed. That is, the washing process, the rinsing process, and the drying process are actually performed.

  The cleaning pump 20 sucks the cleaning water 12 collected at the bottom of the cleaning tank 9, pressurizes it, and jets it from the cleaning nozzle 21. The cleaning nozzle 21 ejects the cleaning water 12 while rotating. The circulating water channel 22 is a water channel for circulating the cleaning water 12 ejected from the cleaning nozzle 21 to the cleaning pump 20 again. That is, the cleaning water 12 is circulated in the cleaning tank 9 and repeatedly used. The blower fan 25 is provided above the washing tank 9 and is for drying the tableware. The blower fan 25 and the cleaning tank 9 communicate with each other through the blower port 26. Note that the control unit 27 starts / stops the cleaning pump 20 and the blower fan 25.

  The drain pump 23 is provided below the cleaning tank 9 and is for discharging the cleaning water 12. That is, when the control means 27 activates the drain pump 23, the cleaning water 12 is drained from the cleaning tank 9 to the sink 8 through the drain path 24 and the drain hose 6. The drainage channel 24 is branched and communicates with the water storage tank 10 via the overflow port 11.

FIG. 3 is a plan view illustrating an example of the operation unit 2 of the dishwasher 50.
The operation unit 2 receives an instruction from the user or indicates the state of the dishwasher, and includes a display unit 51 and an operation input unit 52. The operation input unit 52 selects a power switch 30 for turning on / off the power supplied to the dishwasher 50, a start button 31 for accepting the start of execution of the normal washing process, and a course provided with a plurality of types. And a course selection button 32. These operation buttons may be made to function as reception buttons for receiving a drainage instruction.

  The display unit 51 includes a water injection / full water lamp 40 that displays the storage state of the cleaning water 12 in the water storage tank 10, a heating / heat retention state lamp 41 that displays the heating state of the cleaning water 12 in the water storage tank 10, and a normal cleaning process The washing lamp 42 for displaying the washing process in the inside, the rinsing lamp 43 for displaying the rinsing process in the normal washing process, the drying lamp 44 for displaying the drying process in the normal washing process, and the course selection button 32 are selected. A standard course lamp 45 for displaying the standard course and a long-time course lamp 46 for displaying the long-term course selected by the course selection button 32 are provided.

  When the user selects a course with the course selection button 32 and operates the start button 31, a normal cleaning process (heating, washing, rinsing, and drying) corresponding to the course is started. That is, when the user selects the standard course, the normal cleaning process set as the standard course is executed, and when the user selects the long course, the normal cleaning set as the long course is performed. The process is to be executed. Here, the case where there are two types of courses (standard course, long course) is shown as an example, but the present invention is not limited to this, and it is possible to provide more courses. Detailed explanation of the course will be given later.

  Here, various existing operation buttons (the start button 31 and the course selection button 32) provided in the operation input unit 52 may function as a reception button for receiving a drainage instruction. Then, it becomes possible to drain the wash water 12 in the water storage tank 10 with a simple operation from the user. An operation button for receiving a drainage instruction may be provided.

  For example, the drainage instruction may be received by continuously operating the start button 31 and the course selection button 32 for a predetermined time or by simultaneously operating the start button 31 and the course selection button 32. If it does in this way, it will become possible to drain the washing water 12 in the water storage tank 10 by simple operation, without making a user trouble.

  The water injection / full water lamp 40 indicates the level of the washing water 12 in the water storage tank 10. For example, the water injection / full water lamp 40 may be blinked if the cleaning water 12 is below the full water level 14, and the water injection / full water lamp 40 may be turned on if the cleaning water 12 is the full water level 14. Then, the water level state of the cleaning water 12 in the water storage tank 10 can be grasped at a glance. The water injection / full water lamp 40 is not limited to blinking / lighting, and the state display may be used in a plurality of colors.

  The heating / warming lamp 41 indicates a heating state of the cleaning water 12 in the water storage tank 10. For example, when the cleaning water 12 is being heated and has not reached the preset predetermined temperature, the heating / warming lamp 41 is blinked, and when the preset temperature is reached, the heating / warming lamp 41 is flashed. Should be lit. Note that the heating / warming lamp 41 is not limited to blinking / lighting, and the state display may be selectively used in a plurality of colors.

  The washing lamp 42 indicates that the dishwasher 50 is performing a washing process during a normal washing process. For example, during the washing process, the other process lamps (the rinse lamp 43 and the drying lamp 44) may be turned off and only the washing lamp 42 may be turned on. Note that the washing lamp 42 is not limited to being lit, and may be blinked or lit in a different color from other process lamps.

  The rinsing lamp 43 indicates that the dishwasher 50 is executing the rinsing process during the normal washing process. The drying lamp 44 indicates that the dishwasher 50 is performing a drying process during a normal cleaning process. The rinse lamp 43 and the drying lamp 44 may be configured with the same specifications as the washing lamp 42.

  The standard course lamp 45 indicates that the normal cleaning process is executed and is being executed in the standard course. The long-time course lamp 46 indicates that the normal cleaning process is executed and is being executed in the long-time course. In addition, the standard course is to execute the normal cleaning process with the washing time and the rinsing time necessary for the normal tableware washing set in advance.

  In the long-time course, the normal washing process is performed in a longer time than the washing time and the rinsing time required for washing ordinary dishes set in the standard course. Generally, each course is set by changing the operation time of the cleaning pump 20 during the cleaning time and the rinsing time (see FIG. 6). The selectable courses are not limited to these two types. For example, even if there is a meticulous course (the operation time of the cleaning pump 20 only for the washing process is longer than the standard course), a simple course (the operation time of each pump in each process is shorter than the standard course), etc. Good.

FIG. 4 is a block diagram showing an electrical configuration of the dishwasher 50.
Based on the detection information transmitted from the water level sensor 13 and the temperature sensor 15, the control means 27 that controls the entire dishwasher 50 controls the heater 16, the water supply pump 17, the cleaning pump 20, the drainage pump 23, the blower fan 25, and the like. It comes to control. For example, the control means 27 starts the heater 16 when the water level sensor 13 detects full water, or stops the heater 16 and starts the water supply pump 17 when the temperature sensor 15 detects a predetermined temperature. . The control means 27 may be constituted by a microcomputer or the like.

  In addition, when the start button 31 and the course selection button 32 are operated, the control means 27 executes a normal cleaning process based on the instructions or drains the cleaning water 12 from the water storage tank 10. . Furthermore, the control means 27 controls the buzzer 28 which transmits a warning to a user, and controls lighting / extinguishing of various lamps provided in the display unit 51. It should be noted that the alarm that is sent to the user is not limited to the buzzer 28. For example, the alarm may be displayed on the display unit 51 or may be alarmed by voice or music.

Next, the operation of the dishwasher 50 will be described.
FIG. 5 is a timing chart showing the operation timing of each means of the dishwasher 50. The normal operation of the dishwasher 50 will be described with reference to FIG.

  When the user turns on the power switch 30, the control means 27 blinks the water injection / full water lamp 40 until the washing water 12 in the water storage tank 10 reaches the full water level 14. Thereafter, when the washing water 12 reaches the full water level 14, the control means 27 switches the water injection / full water lamp 40 from blinking to lighting. At this time, the control means 27 may send a buzzer 28 or a voice to prompt the user to start water injection. The power switch 30 is not turned off until the normal cleaning process is completed unless forcedly turned off by the user.

  When water injection is started by the user (A), the temperature sensor 15 detects the temperature of the cleaning water 12 in the water storage tank 10, and the detection information is sent to the control means 27. When the water level sensor 13 indicates that the level of the wash water 12 stored in the water storage tank 10 has reached a predetermined amount (B), the control means 27 sounds a buzzer 28 and the wash water 12 reaches the full water level 14. The user is notified of this. That is, the control means 27 notifies the user of the completion of water storage by the buzzer 28 and the water injection / full water lamp 40.

  When the start button 31 is operated by a user who has recognized the completion of water storage (C), the control means 27 activates the heater 16. And the control means 27 starts the heater 16 until it reaches the predetermined temperature (for example, 90 degreeC) in which the washing water 12 is set. The control means 27 controls the heater 16 based on the temperature information of the cleaning water 12 transmitted from the temperature sensor 15. Further, the control means 27 keeps the water injection / full water lamp 40 lit because the washing water 12 is not used.

  When it is detected that the temperature sensor 15 has reached the set temperature (T1) (D) (D), the control means 27 stops the heater 16 and turns off the water injection / full water lamp 40. And the control means 27 operates the water supply pump 17, and performs a washing process. The control means 27 turns on the washing lamp 42 until the washing process is completed.

  The control means 27 first operates the water supply pump 17 for a predetermined time (t1 time) to supply a predetermined amount of the cleaning water 12 from the water storage tank 10 to the cleaning tank 9. After operating the water supply pump 17 for the time t1, the control means 27 stops the water supply pump 17 and operates the cleaning pump 20 for a predetermined time (t2 hours). After operating the cleaning pump 20 for t2 hours, the control means 27 stops the cleaning pump 20 and operates the drain pump 23 for a predetermined time (t3 hours).

  The time t1, time t2, and time t3 are set according to the course selected by the user (see FIG. 6). In addition, here, a case where the number of washing steps is only one is shown as an example, but the present invention is not limited to this, and the washing step may be executed a plurality of times. Furthermore, the number of washing steps may be set according to the selected course, or the user may arbitrarily determine the number of washing steps.

  After operating the drain pump 23 for t3 time (that is, after the end of the washing process), the control means 27 causes the rinsing process to be executed (E). At this time, the control means 27 turns off the washing lamp 42 and turns on the rinsing lamp 43 until the rinsing process is completed.

  The control means 27 first operates the water supply pump 17 for t1 time to supply a predetermined amount of the cleaning water 12 from the water storage tank 10 to the cleaning tank 9. After operating the feed water pump 17 for t1 time, the control means 27 stops the feed water pump 17 and operates the washing pump 20 for t2 time. After operating the cleaning pump 20 for t2 hours, the control means 27 stops the cleaning pump 20 and operates the drain pump 23 for t3 hours. Thus, the rinsing process is performed in the same manner as the washing process.

  In addition, t1 time, t2 time, and t3 time are set according to the course selected by the user similarly to the washing | cleaning process (refer FIG. 6). Although the case where the number of times of the rinsing process is only one is shown here as an example, the present invention is not limited to this, and the rinsing process may be executed a plurality of times. Further, the number of rinsing steps may be set according to the selected course, or the user may arbitrarily determine the number of rinsing steps.

  After operating the drainage pump 23 for t3 time (that is, after the rinsing process is completed), the control means 27 causes the drying process to be executed (F). At this time, the control means 27 turns off the rinsing lamp 43 and turns on the drying lamp 44 until the drying process is completed. Usually, the washing water 12 stored in the water storage tank 10 in the rinsing process is used up. That is, the washing water 12 stored in the water storage tank 10 is stored in an amount necessary for the washing process and the rinsing process in the normal washing process.

  The control means 27 operates the blower fan 25 for a predetermined time (t4 hours) to execute the drying process. At this time, the control means 27 turns off the rinsing lamp 43 and turns on the drying lamp 44 until the drying process is completed. Furthermore, after operating the blower fan 25 for t4 hours, the control means 27 automatically turns off the power switch 30 on the assumption that all steps have been completed (G). Before the power switch 30 is automatically turned off, the user may be informed that the normal cleaning process has been completed with the buzzer 28 or voice.

  As described above, the normal cleaning process is performed. Here, the course selection from the user is not described, but if the course selection button 32 is operated before the start button 31 is operated, the normal cleaning process corresponding to the selected course is executed. It is like that.

FIG. 6 is an explanatory diagram showing the display and set time of each course.
Here, setting values of two types of courses, that is, a standard course and a long-time course will be described. When the course selection button 32 is operated, either the standard course lamp 45 or the long-time course lamp 46 is lit. By repeating the operation of the course selection button 32, the lighting of the standard course lamp 45 and the long-time course lamp 46 is switched.

  If the user operates the start button 31 after confirming the lit lamp, the normal cleaning process is executed in the lit course. When the power switch 30 is turned on, either the standard course lamp 45 or the long-time course lamp 46 is turned on. Here, two types of courses will be described as an example, but the present invention is not limited to this, and there may be a plurality of types of courses.

  When the standard course is selected, the standard course lamp 45 is turned on and the long course lamp 46 is turned off. The t1 time is 20 seconds, the t2 time is 5 minutes, the t3 time is 30 seconds, t4 time is set to 20 minutes. When the long course is selected, the standard course lamp 45 is turned off and the long course lamp 46 is turned on. The t1 time is 20 seconds, the t2 time is 10 minutes, and the t3 time is 30 seconds. , T4 time is set to 20 minutes. Thus, only the t2 time is different.

  Here, a case where the standard course lamp 45 and the long-time course lamp 46 are turned on / off is shown as an example, but the present invention is not limited to this, and the colors may be used properly. Further, each setting time may be arbitrarily set by the user (favorite setting). In addition, it does not limit to the set time illustrated here, You may make it all differ in each set time. The set time may be stored in a non-volatile memory or the like that is a storage unit (not shown).

FIG. 7 is a flowchart showing a process flow for draining the wash water 12 stored in the water storage tank 10.
Here, a case where a drainage instruction is received by continuing to operate the course selection button 32 for a predetermined time will be described as an example.

  When there is a drainage instruction from the user, the control means 27 blinks the washing lamp 42 and the rinse lamp 43 (step S101) to notify the user that the drainage instruction has been accepted. Here, a case where the washing lamp 42 and the rinsing lamp 43 are blinked will be described as an example. However, the present invention is not limited to this, and it is sufficient that the user can confirm that the drainage instruction has been accepted. For example, you may alert | report with the buzzer 28 or an audio | voice.

  The control means 27 operates the drain pump 23 for a predetermined time (t5 hours) (step S102). Thus, the control means 27 first drains the cleaning water 12 in the cleaning tank 9. This is for avoiding the overflow of the cleaning water 12 from the cleaning tank 9 when the cleaning water 12 is newly supplied from the water storage tank 10 when the cleaning water 12 exists in the cleaning tank 9.

  After operating the drain pump 23 for t5 hours, the control means 27 stops the drain pump 23 so that nothing is operated for a predetermined time (t6 hours) (step S103). While each pump (drainage pump 23, water supply pump 17) is operating, the surface of the wash water 12 is shaking. If each pump is operated in this state, a situation in which air enters the pump together with the cleaning water 12 (air clogging) easily occurs. If air enters the pump, a problem that the pump does not operate normally occurs. Therefore, the control means 27 does not operate for t6 time and waits for the shaking of the washing water 12 to stabilize.

  After the elapse of t6 time, the control means 27 operates the water supply pump 17 for a predetermined time (t7 time) (step S104). The control means 27 operates the water supply pump 17 to supply a predetermined amount of the cleaning water 12 stored in the water storage tank 10 to the cleaning tank 9. Here, the reason why the entire amount in the water storage tank 10 is not supplied to the cleaning tank 9 at a time is to prevent the cleaning water 12 from overflowing from the cleaning tank 9. Note that the predetermined amount of the cleaning water 12 supplied to the cleaning tank 9 may be determined by the capacity of the cleaning tank 9 and the capacity of the water supply pump 17.

  When a predetermined amount of cleaning water 12 in the cleaning tank 9 is supplied, the control means 27 stops the water supply pump 17 and does not operate anything for t6 (step S105). After the elapse of time t6, the control means 27 operates the drain pump 23 for a time t5 to discharge the cleaning water 12 from the cleaning tank 9 (step S106). The control means 27 stops the drainage pump 23 and does not operate anything for t6 hours (step S107). Thereafter, the control means 27 operates the water supply pump 17 for t7 hours so as to supply a predetermined amount of cleaning water 12 from the water storage tank 10 to the cleaning tank 9 (step S108).

  After the elapse of t7 time, the control means 27 stops the water supply pump 17 and does not operate anything for t6 time (step S109). After the elapse of time t6, the control means 27 operates the drain pump 23 for a time t5 to discharge the cleaning water 12 from the cleaning tank 9 (step S110). When it is determined that the drainage is completed, the control unit 27 stops the drainage pump 23, turns off the washing lamp 42 and the rinse lamp 43, and notifies the user that the drainage is completed (step S111). Then, the control means 27 automatically turns off the power switch 30.

  As described above, the washing water 12 in the water storage tank 10 is drained. That is, the washing water 12 remaining in the water storage tank 10 is drained by alternately operating / stopping the drain pump 23 and the water supply pump 17 alternately. Here, although the case where it repeated twice was shown as an example, it is not limited to this, It is good to determine the frequency | count of repetition according to the quantity of the wash water 12 in the water storage tank 10. FIG.

  As described above, since the washing water 12 in the water storage tank 10 is drained, the washing water 12 in the water storage tank 10 can be drained by a simple operation from the user. Here, the case where the drainage instruction is received by continuing to operate for a predetermined time is shown as an example, but the present invention is not limited to this, and the drainage instruction is received by continuing to operate the start button 31 for a predetermined time. Alternatively, a drainage instruction may be received by operating the start button 31 and the course selection button 32 at the same time.

  Further, the control means 27 can execute the drainage process only by not operating the cleaning pump 20 from the control process in the washing process and the rinsing process in the normal cleaning process. That is, it is not necessary to provide the control means 27 with a complicated circuit configuration different from the normal cleaning process.

  The operation time of the drainage pump 23 is t5 hours, the standby time is t6 hours, and the operation time of the water supply pump 17 is t7 time, depending on the capacity of the drainage pump 23 and the water supply pump 17 and the amount of the washing water 12. It is good to set. For example, the first t5 time, t6 time, and t7 time can be set longer than each subsequent time.

  FIG. 8 is a timing chart showing the timing of the process of draining the cleaning water 12 stored in the water storage tank 10. The drainage operation of the dishwasher 50 will be described with reference to FIG.

  When the user turns on the power switch 30, the control means 27 blinks the water injection / full water lamp 40. At this time, the control means 27 is waiting for the course selection button 32 and the start button 31 to be operated. Then, if the course selection button 32 continues to be operated for a predetermined time from the user, the control means 27 determines that there has been a drainage instruction, and the user has accepted that the drainage instruction has been accepted by blinking the washing lamp 42 and the rinse lamp 43. To inform.

  The control means 27 operates the drainage pump 23 for t5 hours, and stops the drainage pump 23 after elapse of t5 hours. After waiting for t6 hours and the shaking of the cleaning water 12 is stabilized, the water supply pump 17 is operated for t7 hours to supply the cleaning water 12 in the water storage tank 10 to the cleaning tank 9. After the elapse of time t7, the control means 27 stops the water supply pump 17 and waits for time t6 again. The above operation is repeated.

  The control means 27 blinks the washing lamp 42 and the rinsing lamp 43 while draining. When the draining is completed, the washing lamp 42 and the rinsing lamp 43 are turned off and the power switch 30 is automatically turned off.

  As described above, since other means are not operated while the wastewater treatment is being performed, it is possible to reduce power consumption. In addition, drainage can be instructed with a simple operation without requiring a special operation from the user.

It is an installation state figure which shows an example of the installation state of the dishwasher main body which concerns on embodiment of this invention. It is a schematic sectional drawing which shows the internal structure of a dishwasher main body. It is a top view which shows an example of an operation part. It is a block diagram which shows the electrical structure of the dishwasher main body. It is a timing chart which shows the operation timing of each means of a dishwasher main body. It is explanatory drawing which shows the display and setting time of each course. It is a flowchart which shows the flow of the process which drains the wash water stored in the water storage tank. It is a timing chart which shows the timing of the process which drains the washing water stored in the water storage tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body, 2 Operation part, 3 Door, 4 Water supply pipe, 5 Water receiving port, 6 Drainage hose, 7 Faucet, 8 Sink, 9 Washing tank, 10 Water storage tank, 11 Overflow port, 12 Washing water, 13 Water level sensor, 14 Full water 15 Temperature sensor, 16 Heater, 17 Water supply pump, 18 Water supply channel, 19 Water supply port, 20 Washing pump, 21 Washing nozzle, 22 Circulating water channel, 23 Drainage pump, 24 Drainage channel, 25 Blower fan, 26 Blower port, 27 Control means, 28 Buzzer, 29 Lamp display, 30 Power switch, 31 Start button, 32 Course selection button, 40 Water filling / full water lamp, 41 Heating / warming lamp, 42 Washing lamp, 43 Rinsing lamp, 44 Drying lamp, 45 Standard course Lamp, 46 Long course lamp, 50 Dishwasher, 51 Display unit, 52 Operation input unit, 60 counter Top.

Claims (3)

A washing tank for storing dishes to be washed;
A water storage tank for storing wash water;
A water supply pump for supplying cleaning water stored in the water storage tank to the cleaning tank;
A washing pump for washing the tableware;
A drainage pump for draining the washing water of the washing tank;
A dishwasher having control means for controlling the water supply pump, the washing pump and the drainage pump,
The control means includes
When draining the wash water stored in the water storage tank outside the dishwasher,
The tableware is characterized in that, without operating the washing pump, the water supply pump and the drainage pump are operated alternately at a predetermined time interval through a stop time, and the operation is controlled to be repeated a predetermined number of times. washing machine. It has a reception button for receiving drainage instructions,
The control means includes
The dishwasher according to claim 1, wherein when a drainage instruction signal is input from the reception button, the washing water stored in the water storage tank is drained. The dishwasher according to claim 1 or 2, wherein the drainage instruction signal is transmitted when the reception button is operated for a predetermined time.

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