JP2016112041A - Tableware washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tableware washing machine in which it is prevented that washing operation cannot be suspended due to a trouble in a position detecting part and that washing operation is restarted under a state where the position detecting part has a trouble.SOLUTION: An operation controlling part 11 interrupts a washing operation when a lock sensor 62 is turned OFF (in a state where a lock mode is not detected) during the washing operation and then restarts the washing operation when a position sensor 45 is switched from OFF (in a state where a wash tank set mode is not detected) to ON (in a state where the wash tank set mode is detected) and the lock sensor 62 is switched to ON (in a state where the lock mode is not detected).SELECTED DRAWING: Figure 3

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 washing tank is pulled out by the user and the position detection unit is turned off during the execution of the dish washing operation, the dish washing operation is temporarily stopped, the washing tank is again accommodated in the washing machine body, and the position detection unit is When turned on, the dishwashing operation is resumed.

  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 dishwasher described in Patent Document 1 is configured to interrupt the dishwashing operation when the washing tank is pulled out during the dishwashing operation and the position detection unit is turned off. When the position detection unit fails during the dishwashing operation and the position detection unit is kept on regardless of the position of the washing tank, the user tries to temporarily stop the dishwashing operation. Even if it is pulled out, there is an inconvenience that the dish washing operation is continued.

  Furthermore, since the operation of the operation unit is not accepted when the position detection unit is kept ON, the user cannot operate the operation unit to stop the dishwashing operation. Moreover, it is not preferable that the dish washing operation is performed in a state where the position detection unit is out of order.

  The present invention has been made in view of such a background, and prevents the dishwashing operation from being stopped due to a failure of the position detection unit, and the dishwashing operation is performed in a state where the position detection unit is out of order. It is an object of the present invention to provide a dishwasher that is prevented.

In order to achieve the above object, the dishwasher of the present invention provides:
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;
When the cleaning tank is housed in the cleaning position in the housing, a locked state in which the position of the cleaning tank is fixed with respect to the housing according to a user operation, and the cleaning tank with respect to the housing A lock mechanism that switches between an unlocked state that can be taken in and out,
A lock state detection unit for detecting the lock state;
After the operation unit is instructed to start the cleaning operation for cleaning the inside of the cleaning tank, the position detection unit detects the cleaning tank set state, and the lock state detection unit locks the lock. The present invention relates to a dishwasher including an operation control unit that starts the washing operation on condition that a state is detected.

  The operation control unit interrupts the cleaning operation when the lock mechanism is operated during the execution of the cleaning operation and the lock state is not detected by the lock state detection unit, and then the cleaning operation is performed. The cleaning tank is housed in the housing after being pulled out of the housing, and the cleaning tank set state is detected by the position detection unit from a state in which the cleaning tank set state is not detected by the position detection unit, and The cleaning operation is restarted on condition that the lock state is switched to the state in which the lock state is detected by the lock state detection unit.

  According to the present invention, if the user operates the lock mechanism to enter the unlocked state while the cleaning operation is being performed, the lock state is not detected by the lock state detecting means. The cleaning operation is interrupted by the operation control unit. Therefore, even if the position detection unit fails and the cleaning tank is pulled out of the housing, or even if the cleaning tank set state is erroneously detected by the position detection unit, the user The washing operation can be interrupted by operating the lock mechanism.

  And when the said operation control part interrupts the said washing | cleaning driving | operation, after that a user pulls out the said washing tank from the said housing | casing, it accommodates in the said housing | casing, and the said washing tank set state is carried out by the said position detection part. The cleaning operation is restarted on the condition that the position detection unit detects the cleaning tank set state and the lock state detection unit switches to the state in which the lock state is detected from the state in which the detection is not detected.

  In this case, if the position detection unit has failed and the cleaning tank is pulled out of the housing, but the position detection unit is erroneously detected that the cleaning tank is set, the user Even if the cleaning tank is stored in the housing, the cleaning operation is not resumed. Therefore, it is possible to prevent the cleaning operation from being restarted in a state where the position detection unit has failed.

  The washing operation includes a dish washing operation for washing the dishes stored in the washing tank and an in-bath washing operation for washing the washing tank itself.

  Further, the position is not detected by the lock state detection unit during execution of the cleaning operation until the predetermined time has elapsed from when the cleaning operation is interrupted by the operation control unit. It is characterized by comprising a notifying unit for notifying when the state where the cleaning tank set state is detected by the detecting unit is maintained.

  According to this configuration, during the execution of the cleaning operation, when the user erroneously operates the lock mechanism to interrupt the cleaning operation, and the user is not aware of the interruption of the cleaning operation, the predetermined operation is performed. When the time elapses, the notification unit notifies the user. And by this notification, it is possible to prompt the user to restart the cleaning operation and prevent the cleaning operation from being left uninterrupted.

  In addition, even when a user pulls out the cleaning tank from the housing due to a failure of the position detection unit, even when the cleaning tank set state is erroneously detected by the position detection unit, When the predetermined time has elapsed, the notification unit notifies the user. And this notification can make the user recognize that a failure of the position detection unit has occurred, and prompt the user to repair the position detection unit.

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. The flowchart of the interruption and resumption processing of 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.

  The handle portion 60 is engaged with the claw portion 63 of the housing 40 to lock the cleaning tank 20 at the cleaning position of the housing 40, the lock lever 61, and the lock lever 61 are in the locked position (housing). There is provided a lock sensor 62 (corresponding to the lock state detection portion of the present invention) for detecting that the body 40 is at a position engaging with the claw portion 63 of the body 40. The handle portion 60, the lock lever 61, and the claw portion 63 of the housing 40 constitute the lock mechanism of the present invention.

  When the user grasps the handle portion 60, the lock lever 61 rotates upward to disengage from the claw portion, and the cleaning tank 20 can be taken in and out. The lock lever 61 is biased in the locking direction, and when the user releases the handle 60, the lock lever 61 returns to the lock position.

  By being configured in this manner, the user holds the handle 60 (unlocked state), pushes the cleaning tank 20 to the cleaning position in the housing 40, and releases the hand from the handle 60. 20 will be in the state fixed to the washing | cleaning position (washing tank set state, locked state). In this locked state, the cleaning operation is executed.

  Next, as shown in FIG. 2A, when the cleaning tank 20 is stored in the cleaning position in the housing 40 and is in the locked state, the position sensor 45 is turned on (detected state) and locked. The sensor 62 is also turned on. 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), and the lock sensor 62 is set by the user. ON and OFF are switched according to the gripping state of the handle 60.

  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 tableware washing machine 1, after the user operates the operation unit 50 to instruct the start of the washing operation in a state where the washing tank 20 shown in FIG. The cleaning operation is started on the condition that both the position sensor 45 and the lock sensor 62 are turned on by pushing the cleaning 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 cleaning the cleaning tank 20 and the tableware basket 21 (in-tank cleaning operation) is collectively referred to as a cleaning 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 so, it functions as an operation control unit 11 for executing a series of cleaning operation processes and an informing unit 12 for informing the user.

  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 is 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 for instructing start and pause of the cleaning operation, a course selection unit 52 for selecting a course (operation process) of the cleaning operation, and a reserved operation. Is provided with a reservation switch 54 and a reservation LED 54a for indicating that the reservation operation is set.

  The instruction to start the cleaning operation by operating the start switch 51 corresponds to an operation for instructing the start of the cleaning operation of the present invention.

  The course selection unit 52 includes a course selection switch 53 for instructing switching of the course of the cleaning operation, and course LEDs 53a to 53e indicating the course being selected. Each time the user operates the course selection switch 53, the course of the cleaning operation to be selected is “standard course” → “standard + dry 2 hour course” → “standard + soft exhaust course” → “standard + soft exhaust + “Dry 2 hour course” → “Careful course” → “Carefully + Dry 2 hour course” → “Carefully + Soft exhaust course” → “Care + 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-vessel 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 and the amount of water supply is increased.

  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 cleaning tank 20 is pulled out from the housing 40 and the position sensor 45 is turned off (a state in which the cleaning tank set state is not detected), the controller 10 selects a “standard course” that is an initial selection course for the cleaning 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, the process of interrupting and resuming the cleaning operation by the operation control unit 11 and the notification process by the notification unit 12 will be described according to the flowchart shown in FIG.

  When the user grips the handle portion 60 and the lock sensor 62 is turned off during execution of the cleaning operation, the operation control unit 11 proceeds from STEP 1 to STEP 2 and interrupts the cleaning operation. In this case, the lock sensor 62 is normal even if an ON failure of the position sensor 45 (a failure in which the cleaning tank 20 is pulled out of the housing 40 or the position sensor 45 is not turned OFF and remains ON) occurs. If it is operating, the user can interrupt the cleaning operation by grasping the handle portion 60.

  STEP 10 and STEP 11 branched from the subsequent STEP 3 and STEP 4 are processes by the notification unit 12. The notification unit 12 starts the timer at STEP3. Note that the set time of the timer corresponds to the predetermined time of the present invention.

  In STEP 4, the operation control unit 11 determines whether or not the position sensor 45 is OFF. When the position sensor 45 is OFF, the operation control unit 11 proceeds to STEP 5. When the position sensor 45 is ON, the operation control unit 11 branches to STEP 10. To do.

  Here, when the position sensor 45 is OFF, it can be determined that the position sensor 45 is operating normally and the user has pulled out the cleaning tank 20 from the housing 40. Therefore, in STEP 5, when both the position sensor 45 and the lock sensor 62 are turned on and it can be determined that the user has pushed the cleaning tank 20 to the cleaning set position of the housing 40, the process proceeds to STEP 6, and the operation control unit 11 Restart the cleaning operation.

On the other hand, when the position sensor 45 is ON in STEP 4, it can be determined that the following situation (1) or (2) is present.
(1) Since the position sensor 45 is operating normally and the user accidentally grips the handle 60 but does not pull out the cleaning tank 20 from the casing 40, the cleaning tank 20 is stored in the casing 40. Was maintained.
(2) A situation in which the position sensor 45 is ON and the user holds the handle 60 and pulls out the cleaning tank 20 from the housing 40, but the state where the position sensor 45 is ON is maintained.

  Accordingly, the notification unit 12 determines whether or not the timer has expired in STEP 10, and proceeds to STEP 11 if the timer has expired (predetermined time has elapsed), and if the timer has not expired. Returns to STEP4.

  In STEP 11, the notification unit 12 sounds the buzzer 55. Note that the buzzer 55 may sound and the LED may blink (for example, the reservation LED 54a blinks). As a result, when the situation (1) is present, the user is made aware that the cleaning operation has been interrupted, and the cleaning operation is restarted (pushing the cleaning tank 20 into the housing 40). Can be urged.

  Further, when the situation (2) is present, the user is urged to repair the position sensor 45 by recognizing that the restart of the cleaning operation is prohibited because the position sensor 45 has failed. be able to.

  In the present embodiment, the user is notified that the situation (1) or (2) is present by the processing by the notification unit 12 in STEPs 3, 4, 10, and 11 of FIG. Even when this process is not performed, the effect of the present invention can be obtained.

  Further, when the timer is started at STEP 3 in FIG. 5 and the position sensor 45 is turned OFF at STEP 4 and before the position sensor 45 and the lock sensor 62 are both turned ON at STEP 5, the buzzer 55 is activated. May be urged to prompt the user to resume the cleaning operation.

  DESCRIPTION OF SYMBOLS 1 ... Tableware washing machine, 10 ... Controller, 11 ... Operation control part, 12 ... Notification part, 20 ... Washing tank, 40 ... Housing | casing, 45 ... Position sensor (position detection part), 50 ... Operation part, 51 ... Start switch , 60 ... handle part (lock mechanism), 61 ... lock lever (lock mechanism), 62 ... lock sensor (lock state detection part), 63 ... claw part (lock mechanism).

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;
When the cleaning tank is housed in the cleaning position in the housing, a locked state in which the position of the cleaning tank is fixed with respect to the housing according to a user operation, and the cleaning tank with respect to the housing A lock mechanism that switches between an unlocked state that can be taken in and out,
A lock state detection unit for detecting the lock state;
After the operation unit is instructed to start the cleaning operation for cleaning the inside of the cleaning tank, the position detection unit detects the cleaning tank set state, and the lock state detection unit locks the lock. A dishwasher comprising an operation control unit that starts the washing operation on condition that a state is detected,
The operation control unit interrupts the cleaning operation when the lock mechanism is operated during the cleaning operation and the lock state is not detected by the lock state detection unit, and then the cleaning tank From the state where the cleaning tank set state is not detected by the position detection unit, and the cleaning tank set state is detected by the position detection unit, and the lock is A dishwasher that restarts the washing operation on condition that the state is switched to a state in which the lock state is detected by a state detection unit. The dishwasher according to claim 1, wherein
The position detection unit until the predetermined time elapses after the lock state is not detected by the lock state detection unit during execution of the cleaning operation and the cleaning operation is interrupted by the operation control unit. A dishwasher comprising a notifying unit for notifying when the state where the washing tank set state is detected is maintained.

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