JP6130821B2 - Dishwasher - Google Patents

Description

  The present invention relates to a front drawer type dishwasher.

  Conventionally, as a dishwasher installed in a system kitchen or the like, a washing tank in which tableware is stored is slid horizontally through an opening provided on the front side of the washing machine main body (side facing the user). 2. Description of the Related Art A front-drawing type dishwasher that is configured to be inserted and removed is known (for example, see Patent Document 1).

  In the dishwasher described in Patent Document 1, in order to improve the sense of unity with the system kitchen and to prevent erroneous operation of the switch during the dishwashing operation, a switch operated by the user (power switch, setting A switch, a start switch) is provided on the upper surface of the door concealed in a state where the cleaning tank is accommodated. Further, a storage detection unit (position detection unit) for detecting that the cleaning tank is stored is provided.

  And, when the position detection unit is OFF (the cleaning tank is pulled out from the main body), the power switch is operated by the user, the driving course is selected by the setting switch, and the start switch is operated, When the position detection unit is turned on (a state where the washing tank is housed in the main body), the dish washing operation is started.

In addition, when the position detection unit is ON, when the power switch or start switch is operated, it is determined that the position detection unit has been erroneously detected, and an abnormality is notified by the buzzer without accepting these operations. It is configured to do.

JP 2014-124201 A

  The inventors of the present application have found that when the configuration of the dishwasher described in Patent Document 1 is adopted, it may be inconvenient for the user. In other words, if a failure occurs in the position detection unit during the dishwashing operation (a failure in which the position detection unit is maintained in the ON state even when the washing tank is pulled out), the user performs the dishwashing operation. Even if the washing tank is pulled out to be interrupted, the position detection unit is not turned OFF, and thus the dish washing operation is continued with the washing tank pulled out.

  In this case, the cleaning liquid splatters outside the dishwasher, but even if the panic user operates the power switch or start switch, this operation is not accepted because the position detection unit is in the ON failure state. There is an inconvenience that the dishwashing operation cannot be stopped.

  The present invention eliminates such inconveniences, and prevents a dishwashing operation from being disabled when a failure of a position detection unit that detects the position of a washing tank occurs during the execution of a dishwashing operation. The purpose is to provide.

The present invention has been made to achieve the above object, and the dishwasher of the present invention comprises:
A washing tank in which dishes are stored;
A housing having an opening on the front surface, through which the cleaning tank is taken in and out,
A position detector for detecting a cleaning tank set state in which the cleaning tank is housed in a predetermined cleaning position in the housing;
An operation unit disposed at a position to be concealed when the cleaning tank is stored in the cleaning position in the housing;
After the operation unit is operated, on the condition that the washing tank set state is detected by the position detection unit, a dish washing operation for washing the dishes stored in the washing tank is executed, and the tableware In a dishwasher comprising an operation control unit for stopping the dishwashing operation when the position detection unit is not detected by the position detection unit during the washing operation,
The operation control unit stops the dish washing operation when the position detection unit detects the washing tank set state and the operation unit is operated during the dish washing operation. It is characterized by.

  According to the present invention, the operation control unit, on the condition that the cleaning tank set state in which the cleaning tank is stored in the cleaning position in the housing is detected by the position detection unit, Perform dishwashing operation. And since the said operation part is arrange | positioned in the position concealed when the said washing tank is accommodated in the said washing | cleaning position in the said housing | casing, when a user is performing the said dishwashing driving | operation The table washing operation cannot be stopped (interrupted or terminated) by operating the operation unit. Therefore, when the operation control unit is in a state where the user pulls out the cleaning tank from the housing and the position detection unit does not detect the cleaning tank set state during execution of the dishwashing operation. The dishwashing operation is stopped.

  However, an abnormality of the position detection unit occurs, and the position detection unit erroneously detects that it is in the cleaning tank set state (ON failure state) regardless of whether or not the cleaning tank is set. If the user pulls out the washing tank from the housing during the execution of the dishwashing operation, the dishwashing operation does not stop.

  Therefore, the operation control unit, because the washing tank is pulled out from the housing during the execution of the dishwashing operation, because the washing tank set state is erroneously detected due to an abnormality of the position detection unit When the operation unit is operated while the dish washing operation is continued, the dish washing operation is stopped. Accordingly, when the dish washing operation does not stop even if the washing tank is pulled out due to an abnormality of the position detection unit, the user can operate by pulling out the washing tank. The dish washing operation can be stopped by operating the operating section.

  In addition, when the operation detection unit is operated by the position detection unit after the operation unit is operated in a state in which the cleaning tank set state is not detected by the position detection unit, The dish washing operation is started.

  According to this configuration, when the operation control unit switches from the state in which the cleaning tank set state is not detected by the position detection unit to the state detected, and it can be determined that the position detection unit is operating normally The dish washing operation is started. Therefore, it is possible to prevent the dishwashing operation from being started in a state in which the position detection unit has failed.

Explanatory drawing which showed the structure of the dishwasher of this embodiment by the cross section. Explanatory drawing of the usage condition of the dishwasher shown in FIG. The control block diagram of the tableware washing machine shown in FIG. The block diagram of the operation panel shown in FIG. Flow chart of dish washing operation.

  Embodiment of the dishwasher of this invention is described with reference to FIGS.

  With reference to FIG. 1, the dishwasher 1 of this embodiment is a front drawer type dishwasher provided in the lower part of the top plate (countertop) CT, such as a system kitchen, and the opening M of the housing | casing 40 is shown. The washing tank 20 is slid in and out in the horizontal direction via

  In the housing 40, a water supply pipe 41 for supplying water to the cleaning tank 20, a water supply electromagnetic valve 44 for switching the supply and stop of water to the cleaning tank 20 by opening and closing the water supply pipe 41, A position sensor 45 (corresponding to the position detection unit of the present invention) that detects the state of the cleaning tank set in which the drain pipe 42 for draining water and the cleaning tank 20 are housed in the cleaning position near the innermost part of the housing 40 , And an electrode sensor 46 that detects water leakage from the cleaning tank 20 and the like.

  In the washing tub 20, a table basket 21 containing tableware such as W is set, a washing nozzle 22 that jets water toward the tableware, a heater 23 that heats the water stored in the washing tub 20, A temperature sensor 24 for detecting temperature, a pump 26, and a drying fan 28 are provided.

  The pump 26 circulates the water in the cleaning tank 20 through the cleaning nozzle 22 during the forward rotation operation, and discharges the water in the cleaning tank 20 through the leftover filter 25 and the drain pipe 42 during the reverse rotation operation. The drying fan 28 rotates in a state where the heater 23 is operated, thereby sending warm air into the cleaning tank 20 to dry the dishes. The warm air sent into the cleaning tank 20 by the drying fan 28 is exhausted from the vent e above the front surface of the cleaning tank 20.

  The water level detection tank 30 connected to the water storage section of the cleaning tank 20 through the communication pipe 27 is provided with a float type water level sensor 31 that detects that water of a predetermined water level is stored in the cleaning tank 20.

  An operation unit 50 that is operated by a user is disposed on the upper surface of the front end of the cleaning tank 20. Details of the operation unit 50 will be described later. Furthermore, the washing tub 20 is provided with a controller 10 that controls the overall operation of the dishwasher 1, and a handle portion that is gripped by a user when the washing tub 20 is taken in and out on the front surface of the washing tub 20. 60 is provided.

  Next, as illustrated in FIG. 2A, when the cleaning tank 20 is in the cleaning tank set state in which the cleaning tank 20 is stored in the cleaning position in the housing 40, the position sensor 45 is turned on (detected state). On the other hand, as shown in FIG. 2B, when the cleaning tank 20 is pulled out from the housing 40, the position sensor 45 is turned off (non-detection state).

  Moreover, since the operation part 50 is provided in the top | upper surface of the front part of the washing tank 20, in the state which the washing tank 20 shown to Fig.2 (a) was accommodated in the housing | casing 40, the operation part 50 is a system kitchen. It is concealed by the top plate CT. Therefore, the user cannot operate and visually recognize the operation unit 50.

  Therefore, in the dishwasher 1, in the state where the washing tank 20 shown in FIG. 2B is pulled out from the housing 40, the user operates the operation unit 50 to instruct the start of the dishwashing operation. Later, the table washing operation is started by pushing the washing tank 20 into the housing 40.

  In the present embodiment, an operation for cleaning and drying the tableware stored in the cleaning tank 20 (tableware cleaning operation), and an operation for only drying the tableware stored in the cleaning tank 20 (tableware drying operation) The operation for washing the washing tub 20 and the tableware basket 21 (in-tank washing operation) is collectively referred to as a tableware washing operation.

  Next, referring to FIG. 3, the controller 10 is an electronic circuit unit configured by a CPU, a memory, an interface circuit, etc. (not shown), and the CPU executes a control program for the dishwasher 1 held in the memory. By doing this, it functions as the operation control part 11 which performs a process of a series of tableware washing | cleaning operation | movement, and the temporary stop alerting | reporting part 12 which alert | reports that it is the pause state where the dishwashing driving | operation was interrupted.

  The controller 10 receives detection signals from the temperature sensor 24, the water level sensor 31, the position sensor 45, and the electrode sensor 46. Further, the operations of the heater 23, the pump 26, the water supply electromagnetic valve 44, and the drying fan 28 are controlled by a control signal output from the controller 10 via the drive circuit 70.

  Further, the controller 10 receives operation signals from the switches 51, 53, and 54 of the operation unit 50. Further, the operation of the course LEDs 53a to 53e, the reservation LED 54a, and the buzzer 55 are controlled by a control signal output from the controller 10 to the operation unit 50.

  As shown in FIG. 4, the operation unit 50 includes a start switch 51 (corresponding to the operation switch of the present invention) for instructing the start and stop of the dishwashing operation, and the course of the dishwashing operation (operation process). A course selection unit 52 for selecting the reservation operation, a reservation switch 54 for instructing reservation operation, and a reservation LED 54a for indicating that the reservation operation is set.

  The course selection unit 52 includes a course selection switch 53 for instructing switching of the course of the dish washing operation, and course LEDs 53a to 53e indicating the course being selected. Each time the user operates the course selection switch 53, the selected dishwashing course is “standard course” → “standard + drying 2 hour course” → “standard + soft exhaust course” → “standard + soft exhaust”. + Dry 2 hour course ”→“ Careful course ”→“ Careful + Dry 2 hour course ”→“ Carefully + Soft exhaust course ”→“ Careful + Soft exhaust + Dry 2 hour course ”→“ Dry course ”→“ In-bath cleaning ” “Course” → “Standard Course” →….

  The “in-bath cleaning course” uses a cleaning agent in the tank (for example, a detergent mainly composed of citric acid) different from the detergent for tableware in order to remove the calcareous components adhering to the cleaning tank 20 and the dish basket 21. This is a course for cleaning the inside of the cleaning tank 20. Courses other than the “in-tank cleaning course” are courses for cleaning or drying the tableware stored in the cleaning tank 20.

  Here, the “standard course” is a basic course for executing “washing process” → “water rinsing process” → “heat rinsing process” → “drying process”. The “standard + drying 2 hour course” is a course in which the drying process time is changed to 2 hours in the “standard course”.

  The “standard + soft exhaust course” is a course in which the temperature of the hot air exhausted from the vent e in the drying process is suppressed to 40 ° C. in the “standard course”. “Standard + soft exhaust + drying 2 hour course” is a course that changes the time of the drying process to 2 hours in the “standard course” and suppresses the temperature of the hot air exhausted from the vent e in the drying process to 40 ° C. It is.

  In addition, “Careful Course”, “Carefully + Dry 2 Hours Course”, “Carefully + Soft Exhaust Course”, and “Carefully + Soft Exhaust + Dry 2 Hours Course” are “Standard Course” and “Standard + Dry 2 Hours Course”. ”,“ Standard + soft ventilation course ”, and“ Standard + soft ventilation + dry 2 hour course ”, the heating temperature of the rinse water in the heating rinsing step is set to 80 ° C., respectively. The “drying course” is a course for executing only the drying process.

  The “in-tank cleaning course” is the same as the “standard course” except that the cleaning water is heated to a higher temperature than the “standard course” in the cleaning process.

  The controller 10 switches on / off the course LEDs 53a to 53e (standard LED 53a, careful LED 53b, drying LED 53c, in-bath cleaning 53d, and soft exhaust LED 53e) according to the selected course.

  For example, when “standard course” is selected, the controller 10 turns on only the standard LED 53a and turns off the other LEDs 53b to 53e. When “standard + drying 2 hour course” is selected, the controller 10 turns on the standard LED 53a and the drying LED 53c and turns off the other LEDs 53b, 53d, 53e.

  The controller 10 starts to operate when a power connection (not shown) is connected to a commercial power source when the dishwasher 1 is installed, and a power switch (not shown) is turned on. When the washing tank 20 is pulled out from the housing 40 and the position sensor 45 is turned off (a state where the washing set state is not detected), the controller 10 sets the “standard course” which is an initial selection course for the dish washing operation. Select and light the standard LED 53a.

  The controller 10 turns off all the LEDs 53a to 53e and 54a when the user presses and holds the start switch 51 while the cleaning tank 20 is pulled out and any of the LEDs 53a to 53e and 54a is lit. To do. As described above, when the user operates any of the switches 51, 53, and 54 when all the LEDs 53a to 53e and 54a are turned off, the controller 10 determines which of the LEDs 53a to 53e and 54a according to the operation. Lights up.

  Next, according to the flowchart shown in FIG. 5, a series of processing of the dishwashing operation performed by the operation control unit 11 will be described.

  The operation control unit 11 determines that the start switch 51 is turned on in the subsequent STEP 2 in the state where the position sensor is OFF in STEP 1 (the cleaning tank 20 is pulled out from the housing 40 and the cleaning tank set state is not detected). wait. Then, when the start switch 51 is turned on by the user's operation, the process proceeds to STEP 3 and the position sensor 45 is switched to ON (the state where the cleaning tank 20 is pushed into the housing 40 and the cleaning tank set state is detected). Wait for.

  When the position sensor 45 is turned on in STEP3, the process proceeds to STEP4 and the operation control unit 11 starts the dish washing operation. Thus, when it can be confirmed from STEP 1 and STEP 3 that the position sensor 45 has been switched from OFF to ON, it can be determined that the position sensor 45 is operating normally. Therefore, it is possible to prevent the dishwashing operation from being started in a state where the position sensor 45 has failed.

  In subsequent STEP 5, the operation control unit 11 determines whether or not the operation end condition for the dishwashing operation (that all the processes of the selected course are completed) is satisfied. When the operation end condition is satisfied, the process proceeds to STEP 6 and the operation control unit 11 ends the dish washing operation.

  On the other hand, when the operation end condition is not satisfied in STEP 5, the operation branches to STEP 10, and the operation control unit 11 determines whether or not the position sensor 45 is OFF. Then, when the position sensor 45 is OFF, that is, when the user pulls out the washing tank 20 from the housing 40, the process proceeds to STEP 21, and the operation control unit 11 interrupts the dish washing operation and pauses. State.

  When the position sensor 45 is ON in STEP 10, the process branches to STEP 20, and the operation control unit 11 determines whether the start switch 51 is ON. Here, if the position sensor 45 is operating normally, when the position sensor 45 is in the ON state, since the cleaning tank 20 is stored in the housing 40, the user can start the start switch 51 of the operation unit 50. Can not be operated.

  Therefore, when the position sensor 45 is ON in STEP 10 and the start switch 51 is operated in STEP 20, the user tried to interrupt the dish washing operation by pulling out the washing tank 20 from the housing 40. It can be determined that the user has operated the start switch 51 in a situation where the sensor 45 is broken and the ON state is maintained.

  In this case, the dish washing operation is continued in a state where the washing tank 20 is pulled out from the housing 40, and the washing water may be scattered from the washing tank 20. Then, it progresses to STEP21 from STEP20, and the operation control part 11 interrupts dishwashing operation, and makes it a temporary stop state. Thereby, it can prevent that it becomes impossible to stop a dishwashing driving | operation by failure of the position sensor 45. FIG.

On the other hand, when the start switch 51 is not operated in STEP 20, the process returns to STEP 5 and the dish washing operation is continued.

  The temporary stop notification unit 12 sounds the buzzer 55 to notify when the dish washing operation is interrupted in STEP 21. If the dish washing operation is interrupted in STEP 21 because the position sensor 45 is turned off in STEP 10 (the position sensor 45 is operating normally), the start switch 51 is turned on in STEP 20 and the dish washing operation is performed in STEP 21. When the operation is interrupted (the position sensor 45 is in an ON failure), the notification content by the temporary stop notification unit 12 is changed so that the user can recognize that the position sensor 45 has failed. May be.

  In this embodiment, when the start switch 51 is operated during the dishwashing operation in STEP20 of FIG. 5, the process proceeds to STEP21 to interrupt the dishwashing operation. However, the present invention is limited to the start switch 51. Instead, the dishwashing operation may be interrupted when any of a plurality of switches (start switch 51, course selection switch 53, and reservation switch 54) provided in the operation unit 50 is operated. In this case, the switch provided in the operation unit 50 corresponds to the operation switch of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Tableware washing machine, 10 ... Controller, 11 ... Operation control part, 12 ... Pause notification part, 20 ... Washing tank, 40 ... Housing | casing, 45 ... Position sensor (position detection part), 50 ... Operation part, 51 ... Start switch.

Claims (2)

A washing tank in which dishes are stored;
A housing having an opening on the front surface, through which the cleaning tank is taken in and out,
A position detector for detecting a cleaning tank set state in which the cleaning tank is housed in a predetermined cleaning position in the housing;
An operation unit disposed at a position to be concealed when the cleaning tank is stored in the cleaning position in the housing;
After the operation unit is operated, on the condition that the washing tank set state is detected by the position detection unit, a dish washing operation for washing the dishes stored in the washing tank is executed, and the tableware In a dishwasher comprising an operation control unit for stopping the dishwashing operation when the position detection unit is not detected by the position detection unit during the washing operation,
The operation control unit stops the dish washing operation when the position detection unit detects the washing tank set state and the operation unit is operated during the dish washing operation. A dishwasher featuring. The dishwasher according to claim 1, wherein
The operation control unit is configured to wash the dishes when the position detection unit detects the cleaning tank set state after the operation unit is operated in a state where the cleaning tank set state is not detected by the position detection unit. A dishwasher characterized by starting operation.

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