JP5397422B2 - dishwasher - Google Patents

Description

  The present invention relates to a dishwasher.

  In general, a dishwasher is subject to temperature and chemical deterioration due to the effects of heating by a heater, detergent, oil washed away from the object to be washed, etc. due to long-term use. In such cases, it is desirable to perform inspections by repair / inspection workers.

  On the other hand, in an electrical device that requires reliability and safety, the counted operation time is stored in the memory using a memory as a storage means, and automatically when the operation integration time etc. exceeds a predetermined value. There is a technique for informing the user of the inspection time by warning and displaying and urging preventive maintenance (for example, see Patent Document 1).

  According to this, in the dishwasher, it is possible to warn and display the inspection time to the user by detecting a predetermined accumulated operation time or the like. In addition, when the memory is replaced due to a failure or repair within the specified accumulated operating time, a repair / inspection operator reads the accumulated operating time etc. from the memory by an external operation, and stores the information in a new memory. It is of course possible to take over the accumulated operation time before replacement by writing.

Japanese Patent No. 2666363

  However, in such a conventional technique, when a predetermined accumulated operation time is reached, the user is warned and displayed the inspection time, and the repair / inspection operator performs an inspection. By clearing (to 0), the display of inspection will be cancelled, but since the user will continue to use the dishwasher after the inspection is completed, the predetermined accumulated operating time is reached again. Then, the user is warned and displayed for inspection.

  When the inspection indication is made, it is determined that the inspection is possible, but it is difficult to ensure the reliability and safety because the usage period that can ensure the reliability and safety has already been exceeded. This is misleading to the user. The real problem is that even if there is a need for repair, there are no replacement parts. In this way, there is a problem of misleading the user.

  The present invention solves the above-mentioned conventional problems, and when the inspection by long-term use is completed, the inspection display is not performed regardless of the accumulated operation time of the subsequent dishwasher, etc. Depending on the accumulated operating time, the driving performance will be reduced after the inspection, but instead the operating time will be longer than usual so that the user can recognize that the endurance period of the dishwasher is coming. An object of the present invention is to provide a dishwasher that does not give a misunderstanding to the user without re-inspecting the display.

In order to achieve the above object, the present invention is a dishwasher for washing an object to be cleaned, which is based on the operation means for inputting an instruction to the dishwasher and the instruction input by the operation means. Control means for controlling the operation of the dishwasher, display means for displaying the operation status of the dishwasher, storage means for storing information relating to the operation progress state, and capable of reading and writing the information. When the control means determines that the operation time of the dishwasher has exceeded a first predetermined time based on the information related to the operation progress state stored in the storage means, the display means to display inspection indicating that the inspection time of the dishwasher came, when inspection after displaying the inspection, write the information relating to the operation elapsed state stored in said storage means By changing, thereafter, regardless of the operation elapsed state, so as not displayed again inspection, and, after the inspection, the second predetermined operation time of the dishwasher is longer than the first predetermined time When it is determined that more than an hour has passed, by letting the user recognize that the endurance period of the dishwasher is coming, by driving for a longer time than usual in a state where the driving performance is reduced, It does not give a misunderstanding to the user without displaying the inspection again.

  The dishwasher of the present invention does not perform the second and subsequent inspection indications, reduces the performance of the dishwasher, and ensures that the durability of the dishwasher is coming to the user due to the operation that is longer than usual. By recognizing and motivating that it is time to replace it with the user after inspection, it has already exceeded the period of use that can ensure reliability and safety, so ensuring reliability and safety Users can be notified of difficulties.

The longitudinal cross-sectional view of the dishwasher of Embodiment 1 of this invention The block diagram of the control apparatus of the dishwasher of Embodiment 1 of this invention The figure which shows the operation means and display means of the dishwasher of Embodiment 1 of this invention The flowchart which shows the driving | operation operation | movement of the dishwasher of Embodiment 1 of this invention. The flowchart which shows the demonstration driving | operation operation | movement at the time of repair and inspection of the dishwasher of Embodiment 1 of this invention

1st invention is a dishwasher which wash | cleans a to-be-washed object, Comprising: The operation means for inputting the instruction | indication to the said dishwasher, The operation | movement of the said dishwasher based on the said instruction | indication input by the said operation means Control means for performing control, display means for displaying the operation status of the dishwasher, and storage means for storing information related to the operation progress state, and capable of reading and writing the information, the control means, When it is determined that the operation time of the dishwasher has exceeded a first predetermined time based on the information related to the operation progress state stored in the storage means, the inspection time of the dishwasher is determined by the display means. to display inspection indicating that came in during inspection after the display of the inspection, by rewriting the information relating to the operation elapsed state stored in the storage means, its Since regardless of the operation elapsed state, so as not displayed again inspection, and, after the inspection, the operation time of the dishwasher has elapsed the first predetermined time longer than the second predetermined time or more and When it is judged that the durability of the dishwasher is coming to the user without displaying the check again, because it has been operated for a longer time than usual with reduced driving performance. By recognizing and motivating that it is time to replace it with the user after inspection, it has already exceeded the period of use that can ensure reliability and safety, so ensuring reliability and safety It is possible to inform the user of difficulties and avoid misunderstanding the user.

  According to a second invention, in the first invention, when it is determined that a predetermined time or more has passed after exceeding the second predetermined time, the driving performance is further deteriorated so as to drive for a longer time. By doing so, it is possible to make the user recognize more clearly that the endurance period of the dishwasher is coming, and to motivate the user to be in time for replacement after inspection.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a cross-sectional view of a dishwasher according to Embodiment 1 of the present invention. A housing 1 accommodated in a system kitchen has a washing tub 4 that has an opening 2 in the upper portion and accommodates and cleans dishes 3. Provided. The washing tank 4 is connected to a water pipe through a water supply means 5 so that water is supplied into the washing tank 4 during operation. On the front surface of the housing 1, there are disposed an operation means 6 for turning on / off the power, selecting an operation course, and a display means 7 for displaying each state.

  The washing tank 4 can be pulled out in the front-rear direction along rails 8 that are installed substantially horizontally in the inner sides of both sides of the housing 1, and the washing tank 4 and the rails 8 are fixed by means such as screws. The washing tank 4 can be pulled out from the housing 1 by releasing the fixing.

  A table basket 9 that accommodates the tableware 3 is disposed inside the cleaning tank 4, and a cleaning nozzle 10 is rotatably provided below the table basket 9, and a heater for heating the cleaning water inside the cleaning tank 4. A drain port 12 is provided at the bottom of the heating means 11 and the cleaning tank 4. Further, the cleaning tank 4 is provided with a temperature detection means 13 composed of a thermistor or the like for detecting the temperature in the cleaning tank 4 and a motor 14 for sending the cleaning water accumulated in the drain 12 to the cleaning nozzle 10. The pump 15 is disposed, and the washing water accumulated in the drain port 12 is circulated by the washing pump 15 and sprayed from the washing nozzle 10 to wash the dishes 3.

  Further, a lid 16 for closing the opening 2 is disposed above the housing 1 and supported by a pair of left and right parallel link mechanisms 17 including a pair of front and rear links so as to be movable up and down. The elastic sealing member 18 that seals the opening 2 is fixed, and when the cleaning tank 4 is pulled out, the sealing member 18 is configured to escape upward so as not to interfere with the movement of the cleaning tank 4 back and forth.

  Further, an exhaust port (not shown) for discharging the air in the cleaning tank 4 and a blower means 20 for supplying outside air into the cleaning tank 4 are provided, and the humid air in the cleaning tank 4 is exhausted in the drying process. It is set as the structure discharged | emitted out of the washing tank 4 through. A control device 24 for controlling the operation of the dishwasher is disposed on the front surface of the front wall of the washing tub 4.

  FIG. 2 shows a block diagram of the control device for the dishwasher according to the first embodiment of the present invention. The control device 24 includes a load driving means 22 for driving the water supply means 5, the heating means 11, the washing pump 15 and the like, and an operation process. A storage means 23 capable of storing information related to the state and reading, writing, and erasing the information; and a control means 21 for sequentially controlling each process of washing, rinsing, and drying by exchanging information with the information; As the information for evaluating the operation progress state, any one of the operation integration time, the number of operations, or the energization time of the control device 24 is set. In the following description, it is assumed that the operation integration time is set.

  Regarding the control of the storage means 23, it is possible to display the driving progress state on the display means 7 by applying a predetermined operation to the operating means 6, and writing a new driving progress state in the storage means 23. It is possible.

  FIG. 3 is a diagram showing operation means and display means of the dishwasher according to the first embodiment of the present invention, FIG. 4 is a flowchart for the operation of the dishwasher, and FIG. 5 is a flowchart for the demonstration operation at the time of repair / inspection. The configuration, operation, and action of the control means 21 will be described. The “inspection” used in this specification means a preventive inspection against a failure due to long-term use, and does not mean an inspection in a failure state.

  First, operations and effects in a normal use state by a user will be described with reference to FIGS. 3 and 4.

  The user presses the power off / on switch of the operation means 6. Subsequently, the operation is started by pressing the temporary stop / start switch (step S10). The control means 21 determines whether or not the operation flag n for starting the operation stored in the storage means 23 in advance is n = 1 (step S11). An inspection for shipping is performed at the time of factory shipment, and if normal, the operation flag n = 1 is written in the storage means 23. If the operation flag n = 0, it is determined whether or not the operation integration time is less than the first predetermined time (step S12).

  When the operation flag n = 0 and the operation integration time is less than the first predetermined time, the control unit 41 determines that the operation is abnormal, and displays the abnormality by the display unit 7. The operation is disabled (step S13). For example, when the control device 24 is replaced due to repair, since the inspection at the time of shipment from the factory is not performed, the operation flag n remains at the initial value 0. Moreover, since it is immediately after replacement | exchange, the driving | running integration time is less than 1st predetermined time. The predetermined value of the first predetermined time is set to an accumulated operation time that requires inspection by a repair / inspection operator due to long-term use. For example, a time corresponding to use for about 10 years (7000 hours) is set. When the control device 24 is replaced by repair or the like, it is necessary to set the operation flag to n = 1 or n = 0 by the method shown in the flowchart of the demonstration operation at the time of repair or inspection in FIG.

  If it is determined in step S12 that the accumulated operation time is equal to or longer than the first predetermined time, it is determined to be normal, and if it is determined to be less than the second predetermined time (step S14), the steps of washing, rinsing, and drying are performed. Normal operation is performed (step S16). After the operation of each step is completed, the current operation time is added to the operation integration time and stored in the storage means 23 (step S17). Thereafter, the operation is terminated (step S18). Here, the first predetermined time is set to 7000 hours equivalent to about 10 years, but the second predetermined time is set to 9000 hours equivalent to about 12 years, and the third predetermined time is set to 11000 hours equivalent to about 15 years. To do.

  Next, when the operation flag is n = 1 in step S11, it is determined whether the operation integration time is less than the first predetermined time (step S19). If it is longer than the first predetermined time, the inspection lamp of the display means 7 is turned on in order to inform the user that the inspection time for long-term use has come and to warn and display that the inspection is necessary (step) S20). Next, if it is determined that the time is less than the second predetermined time (step S14), the cleaning, rinsing and drying steps are normally operated (step S16). After the operation of each step is completed, the current operation time is added to the operation integration time and stored in the storage means 23 (step S17). Thereafter, the operation is terminated (step S18).

  Therefore, when the factory shipment state (operation flag is n = 1) and the accumulated operation time is equal to or longer than the first predetermined time, the inspection lamp is always displayed, and the warning and display are continuously displayed to the user. As a result, the user can notice the inspection indication, ask the repair / inspection operator to perform the inspection, and when the inspection is completed, the repair / inspection operator sets the operation flag to n = 0 so that the subsequent inspection can be performed. The lamp disappears.

  Next, the operation after the accumulated operation time becomes equal to or longer than the second predetermined time will be described. If it is determined that the accumulated operation time is equal to or longer than the second predetermined time and less than the third predetermined time (steps S14 and S15), the cleaning and rinsing processes are normally operated, but the heater temperature during drying is 20%. Instead, the operation time is extended by 20% and the drying process is operated (step S21). After the operation is completed, the current operation time is added to the operation integration time and stored in the storage means 23 (step S17). Thereafter, the operation is terminated (step S18).

  Further, if it is determined that the accumulated operation time has reached the third predetermined time or more (step S15), the cleaning and rinsing steps are normally performed, but the heater temperature during drying is reduced by 50%, and the operation time is reduced to 50% instead. % To extend the drying process (step S22). After the operation is completed, the current operation time is added to the operation integration time and stored in the storage means 23 (step S17). Thereafter, the operation is terminated (step S18).

  Next, regarding the setting of the operation flag n = 1 by the process demonstration at the time of factory shipment, and the setting of the operation flag n = 0 by the work in which the inspection lamp is turned on and the repair / inspection worker performs the inspection work by long-term use The contents will be described with reference to FIGS.

  The repair / inspection operator performs a predetermined operation by the operation means 6 and starts a demonstration operation (step S50). For example, the demonstration operation is started by pressing the power off / on switch while simultaneously pressing the course switch and the pause / start switch of the operating means 6 and then pressing the course switch several times. A dedicated switch may be provided, but this leads to an increase in cost. Therefore, a method that cannot be easily operated by the user using a switch used in normal operation is selected. The state of the operation flag is displayed using the display lamp of the display means 7 (step S51). For example, if the operation flag n = 1, the powerful lamp of the display means 7 is turned on, and if n = 0, the light is turned off. Thereby, the repair / inspection operator can easily confirm the operation flag visually.

  Next, the operation integration time is displayed by the display means 7 (step S52). For example, if the accumulated operation time is 1000 hours or more as a display method, the drying lamp is turned on, if 2000 hours or more, the reserved lamp is turned on, and if it is 4000 hours or more, the standard lamp is turned on and 8000 hours. In the above case, if a small amount of lamps are lit, the accumulated operation time can be displayed by a combination of lighting and extinguishing of the four display lamps. (The accumulated operation time when the small and dry lamps are on and the other lamps are off is 9000 hours or more and less than 10,000 hours.) If the number of display lamps is increased, the accumulated operation time can be displayed in detail. is there.

  Next, the operation flag displayed earlier is determined (step S53). If n = 0, it is determined whether or not it is in the write mode of the memory serving as the storage means 23 (step S54). This demonstration operation is used not only for the process demonstration at the time of factory shipment and the inspection by the repair / inspection operator in normal use, but also when the control device 24 is replaced in the repair at the time of normal failure. When the control device 24 is replaced due to a failure after using the dishwasher for several years, the accumulated operation time is read from the storage means 23 (memory) of the old control device 24 in order to perform an inspection display. It is necessary to write the data into the storage means 23 (memory) and take over data. Therefore, if this demonstration operation is performed, the repair / inspection operator can easily read and display the operation integration time and write a new value in one operation. Therefore, there is no mistake. When not only the memory writing mode but only the operation accumulated time display, the demonstration operation is terminated as described above (step S55).

  Next, when the control device 24 is replaced for repair and the accumulated operation time is written, in step S54, a predetermined operation is performed by the operation means 6 to set the writing mode of the storage means 23 (memory). For example, the memory write mode can be changed by pressing the pause / start switch once during the demonstration operation.

Next, the operation integration time is input by a predetermined operation of the operation means 6 (step S56). For example, every time the course switch is pressed, the accumulated operation time is changed from 1000 → 2000 → 3000 →... → 8000 (hours). The input operation accumulated time is displayed on the display means 7 in the same manner as the above-mentioned operation accumulated time display method (step S57). If the written operation accumulated time is correct, the memory writing is completed by pressing a predetermined operation of the operation means 6, for example, a temporary stop / start switch once (step S58).

  Next, it is determined whether the written operation accumulated time is less than the first predetermined time (step S59). If it is less than the first predetermined time, the operation flag n = 1 is set and written in the memory (steps S60 and S61). This is because when the new control device 24 is used for repair, the operation flag n is 0 as it is. If the accumulated operation time is less than the first predetermined time, it is the same condition as the accumulated operation time at the time of shipment from the factory is almost zero, and it is necessary to notify the user about the use of the control device 24 after replacement. Therefore, the operation flag n = 1 is set as in the factory shipment. As a result, even if the repair is performed with the operation accumulated time less than the first predetermined time, the inspection lamp can be turned on in about 10 years with the inspection display by long-term use.

  Note that the setting of the operation flag n = 1 at the time of factory shipment can be set at any timing by other means, but can also be performed as step S60 in the demonstration operation.

  In step S59, if the accumulated operation time written at the time of repair is equal to or longer than the first predetermined time, it means that the repair has already been completed. Therefore, the demonstration operation is performed with the operation flag n = 0. Exit. This is because once the inspection / repair is completed, the inspection lamp is not displayed again even if the accumulated operation time is equal to or longer than the first predetermined time.

  Next, the inspection will be described. When the repair / inspection operator confirms the operation flag n by the demonstration operation, it is usually the case where n = 1 in the determination of step S53. When checking by check notification, since the accumulated operation time is equal to or longer than the first predetermined time, the operation flag n is set to 0 (step S63) and written to the memory (step S64) according to the determination in step S62. The demonstration operation is terminated (step S55). This is because once the inspection / repair has been completed, the inspection lamp is not displayed again even if the accumulated operation time exceeds the first predetermined value.

  In the conventional dishwasher, the memory of the storage means 23 is cleared at the time of inspection and the accumulated operation time is returned to 0. In this case, the inspection lamp is turned on after about 10 years have passed even after the inspection is completed. This is misleading to the user. Normally, after 20 years, there is a high possibility that the replacement parts will be lost, so there is a possibility that an error message is sent to the user that the repair or inspection can be performed.

  In the present invention, the operation integrated time is left as it is, and the check lamp can be prevented from being turned on again by setting the operation flag to n = 0 in step S63. If the accumulated operation time is less than the first predetermined time at the time of inspection, it is necessary to notify the inspection after that, so that the operation flag n remains n = 1 and the demonstration operation is not changed as determined in step S62. Exit.

  As described above, the replacement of the control device 24 at the time of repair due to failure, the operation of hiding the check lamp at the time of long-term use, and the writing of the operation flag at the time of shipment of the dishwasher at the factory are all referred to as demo operation. The repair / inspection operator can easily perform the repair / inspection operation without performing a wrong operation or performing a plurality of methods and means.

Further, once the inspection lamp is turned on and the repair / inspection worker completes the inspection, the inspection lamp can be prevented from being turned on again, so that the user is not misunderstood. Moreover, even if the inspection is completed, the data can be saved without resetting the data of the accumulated operation time.

  In addition, after the inspection is completed, when the user continues to use the system as it is, after that, when the second predetermined time and the third predetermined time have passed, the driving performance is deteriorated in two stages (for example, when drying) However, by increasing the operating time instead, the user can recognize that the endurance period of the dishwasher is coming. The motivation for the time for replacement to the user has already exceeded the period of use that can ensure reliability and safety, so it is difficult for the user to guarantee reliability and safety. Informs users and avoids misunderstandings.

  In the present embodiment, when the second predetermined time has elapsed, when the third predetermined time has elapsed, and in a state where the driving performance is deteriorated in two stages, it is operated over a longer time than usual, Although it is easy for the user to notice the excess of the usage time, even if it is performed in one stage, the same effect can be obtained. On the contrary, it is also possible to provide a judgment at the time when a predetermined time such as the fourth or fifth time elapses and to change the driving performance and the driving time in more stages.

  Further, in the present embodiment, the operating performance to be reduced is a decrease in the heater temperature at the time of drying, but the operation is prolonged even when the rotation speed of the drying fan is decreased and the temperature of the heating rinse is decreased. The same effect can be obtained if time is increased.

  In the present embodiment, the accumulated operation time is stored in the storage unit 23, but the same effect can be obtained by the number of operations or the energization time to the control device 24.

  Moreover, although the display means 7 was comprised with the some display lamp, if it is a 7 segment number display lamp, the driving | operation integrated time can be displayed in detail.

  Further, although the demonstration operation is performed by a predetermined operation by the operation means 6, a dedicated switch for performing the demonstration operation may be provided in the control device 24.

  In addition, the rewriting setting of the operation flag accompanying the replacement of the control device 24 and the takeover writing of the operation integration time are performed by a predetermined operation of the operation means 6, but a dedicated switch may be provided in the control device 24 or externally. You may carry out from connected apparatuses, such as a memory writer.

  As described above, the dishwasher according to the present invention includes an operation unit for inputting an instruction to the dishwasher, a control unit that performs operation control of the dishwasher based on control information input by the operation unit, A display means for displaying the operation status of the dishwasher, and a storage means for storing information related to the progress of the operation and capable of reading and writing the information, and the control means is configured to store the information on the operation stored in the storage means. When it is determined from the information relating to the elapsed state that the operation of the first predetermined value or more has elapsed, the operation stored in the storage means at the time of inspection in the dishwasher that informs the inspection of the dishwasher by the display means By rewriting the information related to the progress status of the inspection, the inspection is not displayed again after that, and the inspection is not performed again. When it is determined that the driving of the second predetermined value or more has passed, the driving performance is deteriorated and the user takes a longer time than usual so that the endurance period of the dishwasher is coming to the user. It is possible to recognize that there is a period of use that can already ensure reliability and safety by motivating that it is time to replace the user after inspection without displaying the inspection again. Because it can exceed that, it is difficult to guarantee the reliability and safety to the user, and it is possible to eliminate misunderstandings to the user. It is useful as a dishwasher for washing with water.

6 Operating means 7 Display means 21 Control means 22 Load driving means 23 Storage means (memory)
24 Control device

Claims (2)

A dishwasher for washing an object to be cleaned, operation means for inputting an instruction to the dishwasher, and control means for controlling the operation of the dishwasher based on the instruction input by the operation means , Comprising a display means for displaying the operation status of the dishwasher and a storage means for storing information relating to the operation progress state and capable of reading and writing the information, and the control means is stored in the storage means. When it is determined that the operation time of the dishwasher has exceeded the first predetermined time based on the information related to the operation progress state, the display means informs that the inspection time of the dishwasher has come. to display inspection, upon inspection after displaying the inspection, by rewriting the information relating to the operation elapsed state stored in the storage means, the driver via thereafter Regardless of the state, so as not displayed again inspection, and, after the inspection, when the operation time of the dishwasher is judged to have passed the first longer than the predetermined time a second predetermined time or more, A dishwasher that operates over a longer period of time with reduced driving performance. 2. The dishwasher according to claim 1, wherein when it is determined that a predetermined time or more has passed beyond the second predetermined time, the driving performance is further lowered and the operation is continued for a longer time.