WO2011152031A1 - Dish washing machine - Google Patents

Abstract

A dish washing machine for washing an object to be washed, provided with: an operation unit for inputting an instruction for the dish washing machine; a control unit for controlling the operation of the dish washing machine on the basis of the instruction inputted by the operation unit; a display unit for displaying the state of operation of the dish washing machine; and a memory unit for storing information relating to the process and state of operation and allowing the information to be read therefrom and written therein. When determining, on the basis of the information relating to the process and state of operation which is stored in the memory unit, that an operation time period longer than a first predetermined time period has elapsed, the control unit provides display for inspection on the display unit, the display informing that the time at which the dish washing machine needs to be inspected has come. The information relating to the process and state of operation which is stored in the memory unit is updated at the time of the inspection, and this causes the display for inspection not to be displayed again after that irrespective of the process and state of operation of the dish washing machine.

Description

dishwasher

The present invention relates to a dishwasher for washing an object to be washed such as dishware with washing water.

In general, in a dishwasher, physical or chemical parts deteriorate due to heating by a heater, detergent, or oil washed away from an object to be washed over a long period of use. For this reason, it is desirable to perform an inspection by a repair / inspection operator during a predetermined accumulated operation time.

On the other hand, in an electric device that requires reliability and safety, the counted operation time is stored in the memory using a memory, and a warning or display is automatically performed when the accumulated operation time exceeds a predetermined value. Technology has been proposed. According to this technique, it is possible to notify the user of the inspection time and to promote preventive maintenance (for example, see Patent Document 1).

If such technology is applied to a dishwasher, it is possible to detect a predetermined accumulated operation time and warn or display the inspection time to the user.

In such a technique, when the predetermined accumulated operation time is reached, the inspection time is warned or displayed to the user, and the repair / inspection operator performs the inspection. At this time, by clearing the accumulated operation time (set to “0”), the warning or display of the inspection is canceled, but the user continues to use the dishwasher even after the inspection is completed.

For this reason, when the predetermined operation accumulated time is reached again, the dishwasher will give a warning or display for inspection to the user. When the inspection indication is made, the user may determine that the inspection is possible, but in reality, the product has already exceeded the period of use that can ensure the reliability and safety of the product. It is difficult to guarantee safety. Furthermore, in reality, even if there is a need for repair, there is a possibility that parts to be replaced are not made. Therefore, the display or warning of the inspection again may give the user a misunderstanding that it can be used for a longer period of time as long as the inspection is performed.

Japanese Patent No. 2666363

The present invention provides a dishwasher that eliminates the possibility of misunderstanding the user by displaying a warning or displaying a warning again after the inspection is completed.

A dishwasher according to the present invention is a dishwasher for washing an object to be cleaned, and an operation unit for inputting an instruction to the dishwasher, and operation control of the dishwasher based on the instruction input by the operation unit. The control part to perform, the display part which displays the operation condition of a dishwasher, and the memory | storage part which can read and write information while memorizing the information which concerns on an operation progress state are provided. When the control unit determines that the operation time equal to or longer than the first predetermined time has elapsed based on the information related to the operation progress state stored in the storage unit, the time for checking the dishwasher has come by the display unit. Display the inspection to inform you. In addition, at the time of inspection, the information related to the operation progress state stored in the storage unit is rewritten, and thereafter, the display of the inspection is not performed again regardless of the operation progress state of the dishwasher.

This makes it possible to store the fact that the inspection is completed in the storage unit, and thereafter, since the inspection is not displayed again regardless of the operation progress state, the user is not misunderstood.

In addition, “inspection” used in this specification means a preventive inspection against a failure due to a long-term use, and does not mean an inspection in a failure state.

FIG. 1 is a cross-sectional view of the dishwasher according to the first embodiment of the present invention. FIG. 2 is a functional block diagram showing the configuration of the dishwasher control apparatus according to the first embodiment of the present invention. FIG. 3 is a diagram showing a configuration of an operation unit and a display unit of the dishwasher according to the embodiment of the present invention. FIG. 4 is a flowchart showing an operation during operation of the dishwasher according to the first embodiment of the present invention. FIG. 5 is a flowchart of the demonstration operation of the dishwasher according to the first embodiment of the present invention at the time of repair / inspection. FIG. 6 is a cross-sectional view of the dishwasher according to the second embodiment of the present invention. FIG. 7 is a functional block diagram showing the configuration of the control device for the dishwasher according to the second embodiment of the present invention. FIG. 8 is a flowchart showing an operation during operation of the dishwasher according to the second embodiment of the present invention. FIG. 9 is a flowchart of the demonstration operation of the dishwasher according to the second embodiment of the present invention during repair / inspection. FIG. 10 is a cross-sectional view of a dishwasher according to the third embodiment of the present invention. FIG. 11 is a functional block diagram showing the configuration of the control device for the dishwasher according to the third embodiment of the present invention. FIG. 12 is a flowchart showing an operation during operation of the dishwasher according to the third embodiment of the present invention.

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.

(First embodiment)
First, the structure of the dishwasher 50 in the 1st Embodiment of this invention is demonstrated.

FIG. 1 is a cross-sectional view of a dishwasher 50 according to the first embodiment of the present invention.

As shown in FIG. 1, the dishwasher 50 includes a housing 1 housed in a system kitchen, and a washing tub 4 that has an opening 2 in the upper part and houses and cleans the dishes 3. . The cleaning tank 4 is connected to a water pipe through a water supply unit 5, and water is supplied into the cleaning tank 4 during operation. On the front surface of the housing 1, an operation unit 6 for turning on / off the power, selecting an operation course, and the like, and a display unit 7 for displaying each state are arranged.

Further, the cleaning tank 4 can be pulled out in the front-rear direction along rails 8 that are substantially horizontally installed inside the both side surfaces of the housing 1.

In the washing tank 4, a table basket 9 for storing the tableware 3 is arranged. A cleaning nozzle 10 is rotatably provided below the table basket 9. A heating unit 11 such as a heater for heating the cleaning water is provided inside the cleaning tank 4, and a drain port 12 is provided at the bottom of the cleaning tank 4.

Outside the cleaning tank 4, a cleaning pump 15 including a temperature detection unit 13 configured by a thermistor or the like that detects the temperature in the cleaning tank 4, and a motor 14 that sends cleaning water accumulated in the drain port 12 to the cleaning nozzle 10. And are arranged. Washing water accumulated in the drain 12 is circulated by the washing pump 15 and sprayed from the washing nozzle 10 to wash the dishes 3.

A lid 16 for closing the opening 2 is disposed above the housing 1. The lid body 16 is 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. An elastic sealing member 18 that seals the opening 2 of the cleaning tank 4 is fixed to the lid 16. With this configuration, when the cleaning tank 4 is pulled out, the seal member 18 is configured to escape upward so as not to interfere with the forward and backward movement of the cleaning tank 4.

The cleaning tank 4 includes an exhaust port for discharging the air in the cleaning tank 4 and a blower unit 20 that supplies outside air into the cleaning tank 4. During the drying process, the humid air in the cleaning tank 4 is It is configured to discharge the cleaning tank 4 through the exhaust port. A controller 24 that controls the operation of the dishwasher 50 is disposed on the front surface of the front wall of the washing tub 4.

FIG. 2 is a functional block diagram showing the configuration of the control device 24 of the dishwasher 50 according to the first embodiment of the present invention.

As shown in FIG. 2, the control device 24 includes a load driving unit 22, a storage unit 23, and a control unit 21.

The load driving unit 22 drives the water supply unit 5, the heating unit 11, the cleaning pump 15, and the like. The storage unit 23 stores information related to the driving progress state, and can read, write, and erase information. The control unit 21 exchanges information with the operation unit 6, the display unit 7, the load driving unit 22, and the storage unit 23 and sequentially controls each process of cleaning, rinsing, and drying. As the information related to the operation progress state, any one of the integrated operation time of the dishwasher 50, the number of operations, and the energization time of the control device 24 can be used. In the following description, it is assumed that the operation integration time is set as information related to the operation progress state.

When the user performs a predetermined operation on the operation unit 6, it is possible to display the driving progress state stored in the storage unit 23 on the display unit 7 and to store information related to the new driving progress state. 23 can be written.

FIG. 3 is a diagram illustrating the configuration of the operation unit 6 and the display unit 7 of the dishwasher 50 according to the first embodiment of the present invention. FIG. 4 is a flowchart showing an operation during operation of the dishwasher 50 according to the first embodiment of the present invention. FIG. 5 is a flowchart of the demonstration operation of the dishwasher 50 according to the first embodiment of the present invention during repair / inspection. The operation and action of the control device 24 of the dishwasher 50 will be described with reference to these drawings.

First, the operation and action of the user in the normal use state of the dishwasher 50 will be described with reference to FIGS. 3 and 4.

First, the user presses the “Power OFF / ON” switch on the operation unit 6. Subsequently, the operation is started by pressing a “pause / start” switch (step S10).

The control unit 21 determines whether or not the operation flag n stored in advance in the storage unit 23 and indicating that the operation operation may be started is n = 1 (step S11).

The dishwasher 50 is assumed to have an operation flag n = 1 written in the storage unit 23 if it is normal when it is inspected at the time of shipment from the factory. In step S11, when the operation flag n = 0, the control unit 21 determines whether or not the operation integration time is less than a predetermined time (first predetermined time) (step S12).

If the operation flag n = 0 and the accumulated operation time is less than the predetermined time, the control unit 21 determines that the operation is abnormal, displays the abnormality on the display unit 7 and prevents the operation. (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 “0” which is the initial value. Moreover, since it is immediately after exchanging the control apparatus 24, the operation | movement integration time will be less than predetermined time. When the control device 24 is replaced due to repair or the like, it is necessary to set the operation flag to n = 1 or n = 0 according to the operation integration time by a method described later (see FIG. 5).

As the predetermined time (first predetermined time), the accumulated operation time that requires inspection by the repair / inspection operator due to long-term use is set. For example, as the predetermined time, a time equivalent to 10 years of use (7000 hours) is set.

When the operation flag n = 0 and the accumulated operation time of the dishwasher 50 is equal to or longer than a predetermined time, it is determined that the operation is normal, and the control unit 21 operates each of the washing, rinsing, and drying processes. (Step S14).

After the operation is completed, the control unit 21 adds the current operation time to the accumulated operation time stored in the storage unit 23 and stores it in the storage unit 23 (step S15). Thereafter, the operation is terminated (step S16).

On the other hand, if the operation flag is n = 1 in step S11, the control unit 21 determines whether the operation integration time is less than a predetermined time (first predetermined time) (step S17). If the accumulated operation time is equal to or longer than the predetermined time, the control unit 21 turns on the “check” lamp of the display unit 7 in order to warn and display to the user that inspection by long-term use is necessary (step S21). S18). If the accumulated operation time is less than the predetermined time, the process proceeds to step S19.

Next, the control unit 21 operates each of the washing, rinsing, and drying steps (step S19), adds the current operation time to the accumulated operation time, and stores it in the storage unit 23 (step S15). Thereafter, the operation is terminated (step S16).

In this way, when the dishwasher 50 is in the factory-shipped state (the operation flag is n = 1) and the accumulated operation time is equal to or longer than the predetermined time, the “check” lamp is always displayed to warn the user, It will continue to display. As a result, the user notices the inspection indication and requests the repair / inspection operator to perform the inspection. When the inspection is completed, the repair / inspection operator sets the operation flag to n = 0, and subsequent inspection lamps are not displayed.

Next, setting the operation flag n = 1 in the demonstration operation at the time of factory shipment, and setting the operation flag n = 0 in the inspection work performed by the repair / inspection operator when the “inspection” lamp is turned on by long-term use. Will be described with reference to FIGS. 3 and 5. FIG.

The repair / inspection operator performs a predetermined operation by the operation unit 6 and starts a demonstration operation (step S50). For example, while pressing the “Course” switch and “Pause / Start” switch on the operation unit 6 at the same time, press the “Power OFF / ON” switch, and then press the “Course” switch several times, Be started. 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 control unit 21 displays the state of the operation flag using the display lamp of the display unit 7 (step S51). For example, if the operation flag n = 1, the “strong” lamp of the display unit 7 is turned on, and if n = 0, the lamp is turned off. Thereby, the repair / inspection operator can easily confirm the operation flag with the eyes.

Next, the control unit 21 displays the accumulated operation time on the display unit 7 (step S52). As the display method, for example, when the accumulated operation time is 1000 hours or more, the “dry” lamp is turned on. When the accumulated operation time is 2000 hours or more, the “reserved” lamp is turned on. If the lamp is longer than 8000 hours, the "small amount" lamp is turned on. Accordingly, the accumulated operation time can be displayed by the combination of turning on / off the four display lamps. The accumulated operation time when the “small amount” and “dry” lamps are on and the other lamps are off is 9000 hours or more and less than 10000 hours. If the number of display lamps is increased, the accumulated operation time can be displayed more finely.

Next, the control unit 21 determines whether or not the previously displayed operation flag is n = 0 (step S53). If n = 0, the control unit 21 determines whether or not it is in the write mode of the memory serving as the storage unit 23. (Step S54).

This demonstration operation is used when the control device 24 is replaced in a repair at the time of a normal failure, in addition to a process demonstration at the time of factory shipment and an inspection by a repair / inspection operator during normal use. When the control device 24 is replaced due to a failure after using the dishwasher 50 for several years, the accumulated operation time is read from the storage unit 23 (memory) of the old control device 24 in order to perform an inspection display. It is necessary to write to the storage unit 23 (memory) of the device 24 and take over the data.

Therefore, if this demonstration operation is performed, the repair / inspection operator can easily read, display and write the operation integration time in one operation. Therefore, there is no mistake. When not the memory writing mode but only the accumulated operation time display, the demonstration operation ends (step S55).

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 unit 6 to set the storage unit 23 (memory) to the writing mode. For example, it is possible to change to the memory write mode by pressing the “pause / start” switch once during the demonstration operation.

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

Next, the control unit 21 determines whether the written operation accumulated time is less than a predetermined time (step S59). If it is less than the predetermined time, the control unit 21 sets the operation flag n = 1 and writes it 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, and normal operation cannot be performed. When the accumulated operation time is less than the predetermined time, it is necessary to notify the user of the inspection in use after replacement of the control device 24. For this reason, the operation flag n = 1 is set as in the factory shipment. As a result, even if repairs are performed with the operation accumulated time less than the predetermined time, the inspection display by long-term use can be accumulated and the inspection lamp can be turned on in about 10 years.

The operation flag n = 1 at the time of shipment from the factory can be set at any timing by other means, but can also be set as step S60 in the above-described demonstration operation. .

In step S59, if the accumulated operation time written at the time of repair described above (step S56) is equal to or longer than the predetermined time, it means that the inspection / repair has already been completed, so the operation flag n = 0 remains. End the demo operation. This is because once the inspection / repair has been completed, the “inspection” lamp is not displayed again even if the accumulated operation time exceeds a predetermined time.

At the time of inspection, if the inspection operator confirms the operation flag n by demonstration operation, normally, n = 1 in the determination of step S53. In the case of checking by the check notification, since the accumulated operation time is a predetermined time or more, the control unit 21 sets the operation flag n = 0 (step S63) and writes it in the memory (step S64) by the determination in step S62. Then, 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 a predetermined time.

In the conventional dishwasher, the memory of the storage unit 23 was cleared at the time of inspection, and the accumulated operation time was returned to “0”. Then, even if the inspection is completed, the “inspection” lamp is turned on after about 10 years have passed, which causes misunderstanding of 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, it is possible to prevent the “inspection” lamp from turning on again by setting the operation flag to n = 0 in step S63 while leaving the operation integration time as it is. If the accumulated operation time is less than the predetermined time at the time of inspection, it is necessary to notify the inspection after that. After the determination in step S62, the demonstration operation is terminated without changing the operation flag n to n = 1. To do.

In the present embodiment, the operation flag n can assume two values of “0” and “1”. However, two or more states can be separated so that two or more values can be obtained. You may do it. For example, the operation flag n can take three values, so that the three states can be distinguished depending on whether or not the operation integration time exceeds a first predetermined time and further exceeds a second predetermined time. It is also possible to make it. As a result, more detailed inspection and repairs are possible.

As described above, according to the dishwasher 50 of the present embodiment, replacement of the control device 24 at the time of repair due to failure, operation of hiding the check lamp at the time of inspection during long-term use, and further writing of an operation flag All of this can be done with a simple method of demo operation. As a result, the failure / inspection operator can easily perform repairs and inspection work without operating it by mistake or performing a plurality of methods and means.

In addition, once the “inspection” lamp is lit and the repair / inspection operator completes the inspection, the “inspection” lamp can be prevented from being lit again thereafter. Absent. Further, even after the inspection is completed, the data of the accumulated operation time is not reset, so that data can be saved.

In addition, as information related to the driving progress state stored in the storage unit 23, a binary value of “0” or “1” is selectively set according to whether or not the driving time of a predetermined time or more has passed. The enabled operation flag n is used. Thus, the control device 24 can be configured simply and inexpensively and can perform a reliable and stable control operation by determining the operation progress state based on the digital operation flag n together with actual data such as the operation integration time. be able to.

In addition, in the normal operation by the user, when the operation time of a predetermined time or more has elapsed, the display or non-display of the inspection by the display unit 7 is made different depending on the value of the operation flag n. Thereby, even if it continues using the dishwasher 50 after completion | finish of the inspection performed by a repair / inspection operator, it can avoid giving an unnecessary misunderstanding to a user.

Also, at the time of inspection / repair by the repair / inspection operator, it is possible to notify the repair / inspection operator whether or not an operation time of a predetermined time or more has elapsed based on the value of the operation flag n. As a result, operations such as setting of an operation flag accompanying inspection and repair by a repair / inspection operator can be surely performed.

Further, when the storage unit 23 is replaced at the time of inspection / repair (in the present embodiment, it is described that the entire control device 24 equipped with the storage unit 23 is replaced), the storage unit 23 is stored in the storage unit 23 before replacement. The information related to the operation progress state is written in the new storage unit 23 after the replacement and is taken over. Further, by changing the value of the operation flag n according to the information related to the operation progress state, even when the storage unit 23 is replaced in the inspection and repair, an appropriate operation according to the operation progress state until then is performed. Information related to the progress state can be set.

In the present embodiment, the accumulated operation time is stored in the storage unit 23, but the same effect can be obtained even when the number of operations or the energization time to the control device 24 is used as information related to the operation progress state. .

Further, in the present embodiment, an example in which the display unit 7 is configured by a plurality of display lamps has been shown. However, for example, by using a 7-segment numeric display lamp or the like, the operation integrated time can be displayed in more detail. it can.

In the present embodiment, an example in which the demonstration operation is performed by a predetermined operation of the operation unit 6 has been described. However, a dedicated switch for performing the demonstration operation may be provided in the control device 24.

Further, the operation flag rewrite setting, the operation integration time takeover processing, the writing processing, and the like accompanying the replacement of the control device 24 are performed by predetermined operations of the operation unit 6. However, the present invention is not limited to this example, and a dedicated switch may be provided in the control device 24, or the processing described above may be performed from an externally connected device such as a memory writer.

(Second Embodiment)
Next, the dishwasher 51 in the 2nd Embodiment of this invention is demonstrated.

FIG. 6 is a cross-sectional view of the dishwasher 51 in the second embodiment of the present invention. In FIG. 6, the same components as those in the dishwasher 50 described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

The difference between the dishwasher 51 and the dishwasher 50 described in the first embodiment of the present invention is that the control unit 31 of the control device 34 performs control different from the control unit 21 of the dishwasher 50. .

FIG. 7 is a functional block diagram showing the configuration of the control device 34 of the dishwasher 51 according to the second embodiment of the present invention.

As shown in FIG. 7, the control device 34 includes a load driving unit 22, a storage unit 23, and a control unit 31.

The load driving unit 22 drives the water supply unit 5, the heating unit 11, the cleaning pump 15, and the like. The storage unit 23 stores information related to the driving progress state, and can read, write, and erase information. The control unit 31 exchanges information with the operation unit 6, the display unit 7, the load driving unit 22, and the storage unit 23, and sequentially controls each process of cleaning, rinsing, and drying. As the information related to the operation progress state, any one of the integrated operation time of the dishwasher 51, the number of operations, and the energization time of the control device 34 can be used. In the following description, it is assumed that the operation integration time is set as information related to the operation progress state.

When the user performs a predetermined operation on the operation unit 6, it is possible to display the driving progress state stored in the storage unit 23 on the display unit 7 and to store information related to the new driving progress state. 23 can be written.

In addition, it is assumed that the dishwasher 51 of the present embodiment also includes the operation unit 6 and the display unit 7 having the configuration shown in FIG.

FIG. 8 is a flowchart showing an operation during operation of the dishwasher 51 in the second embodiment of the present invention. FIG. 9 is a flowchart of the demonstration operation of the dishwasher 51 according to the second embodiment of the present invention during repair / inspection. The operation and action of the control device 34 of the dishwasher 51 will be described with reference to these drawings.

First, the operation and action of the dishwasher 51 in a normal use state by the user will be described with reference to FIG. 3 and FIG.

First, the user presses the “Power OFF / ON” switch on the operation unit 6. Subsequently, the operation is started by pressing a “pause / start” switch (step S110).

The control unit 31 determines whether or not the operation flag n stored in advance in the storage unit 23 to start the operation is n = 1 (step S111).

When the dishwasher 51 is inspected at the time of shipment from the factory, it is assumed that the operation flag n = 1 is written in the storage unit 23 if it is normal.

If the operation flag n = 0, the control unit 31 determines that the operation is abnormal, displays the abnormality on the display unit 7 and disables the operation (step S112).

For example, when the control device 34 is replaced by repair, since the inspection at the time of shipment from the factory is not performed, the operation flag n remains the initial value “0”. Therefore, when the control device 34 is replaced by repair or the like, it is necessary to set the operation flag to n = 1 by a method described later (see FIG. 9).

Next, the control unit 31 determines whether the accumulated operation time of the dishwasher 51 is less than the first predetermined time (step S113). As the first predetermined time, an accumulated operation time that requires inspection by a repair / inspection operator due to long-term use is set. For example, as the predetermined time, a time equivalent to 10 years of use (7000 hours) is set.

In step S113, when the operation integration time is equal to or longer than the first predetermined time, the control unit 31 determines whether the operation integration time is less than the second predetermined time (step S114).

As the second predetermined time, the maximum value of the accumulated operation time that can be stored in the storage unit 23 is set. For example, 15000 hours or the like is set as the second predetermined time. The memory that is the storage unit 23 becomes more expensive as the capacity that can be stored increases. Therefore, the maximum value of the accumulated operation time is also limited by the capacity of the memory that is used.

When the accumulated operation time is equal to or longer than the second predetermined time in step S114, the control unit 31 operates the washing, rinsing, and drying steps without displaying an inspection display because the storage unit 23 is full. After (step S115), the operation is terminated (step S116).

In step S114, when the accumulated operation time is less than the second predetermined time, in order to warn and display to the user that inspection by long-term use is necessary, the control unit 31 displays “inspection” on the display unit 7. The "lamp is turned on (step S117).

Thereafter, the controller 31 operates each of the washing, rinsing, and drying steps (step S118), adds the current operation time to the operation integration time (step S119), and ends the operation (step S116).

As described above, in the dishwasher 51 according to the present embodiment, when the accumulated operation time is not less than the first predetermined time and less than the second predetermined time, the “inspection” lamp is always displayed, and the user is informed. Continue warning and display. As a result, the user can notice the inspection indication and request the repair / inspection operator to inspect. When the inspection is completed, the inspection lamp is not displayed by the method described later (see FIG. 9).

Next, the operation of the dishwasher 51 when the “inspection” lamp is turned on by long-term use and the repair / inspection operator performs the inspection work will be described with reference to FIGS. 3 and 9.

The repair / inspection operator performs a predetermined operation with the operation unit 6 and starts a demonstration operation of the dishwasher 51 (step S150). For example, while pressing the “Course” switch and “Pause / Start” switch on the operation unit 6 at the same time, press the “Power OFF / ON” switch, and then press the “Course” switch several times, Be started. 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 control unit 31 displays the state of the operation flag using the display lamp of the display unit 7 (step S151). For example, if the operation flag n = 1, the “strong” lamp of the display unit 7 is turned on, and if n = 0, the lamp is turned off. Thereby, the repair / inspection operator can easily confirm the operation flag with the eyes.

Next, the control unit 31 displays the accumulated operation time on the display unit 7 (step S152). As the display method, for example, when the accumulated operation time is 1000 hours or more, the “dry” lamp is turned on. When the accumulated operation time is 2000 hours or more, the “reserved” lamp is turned on. The lamp is turned on, and if it is 8000 hours or longer, the “small amount” lamp is turned on. Accordingly, the accumulated operation time can be displayed by the combination of turning on / off the four display lamps. The accumulated operation time when the “small amount” and “dry” lamps are on and the other lamps are off is 9000 hours or more and less than 10000 hours. If the number of display lamps is increased, the accumulated operation time can be displayed more finely. Thereby, the repair / inspection operator can confirm and grasp the accumulated operation time up to that time.

Next, the control unit 31 determines whether or not it is in the write mode of the memory that is the storage unit 23 (step S153).

This demonstration operation is also used when the control device 34 is replaced during normal repair. When the control device 34 is replaced due to a failure after using the dishwasher 51 for several years, the accumulated operation time is read from the storage unit 23 (memory) of the old control device 34 in order to display an inspection, and a new control is performed. It is necessary to write to the storage unit 23 (memory) of the device 34.

Therefore, by performing this demonstration operation, the repair / inspection operator can easily read and display the accumulated operation time in one operation, grasp it, and write a new value in the storage unit 23. . Therefore, there is no mistake. When not the memory write mode but only the operation integration time display, the demonstration operation ends (step S154).

When performing inspection work during long-term use, or when replacing the control device 34 for repair and writing the accumulated operation time, a predetermined operation is performed by the operation unit 6 in step S153, and the storage unit 23 ( Memory) in write mode. For example, during the demonstration operation, the memory can be changed to the memory write mode by pressing the “pause / start” switch once.

Next, the operation flag n = 1 is set in the storage unit 23 (step S155). This is because when the new control device 34 is used for repair, the operation flag n is “0” as it is, and normal operation cannot be performed. In the flow of FIG. 9, if the operation accumulated time is not written, the operation flag n = 1 cannot be set (writing to the memory is not completed), so that the normal dishwasher 51 cannot be operated. Thereby, the repair / inspection operator can prevent forgetting to write the accumulated operation time when the control device 34 is replaced at the time of repair. Even if repairs are made, the inspection lamp can be lit in about 10 years with a long-term inspection indication.

Next, the repair / inspection operator determines whether or not the accumulated operation time input to the memory is less than the first predetermined time (7000 hours) (step S156), and is less than the first predetermined time. The operation integration time is input by a predetermined operation of the operation unit 6, and the operation integration time up to that time is taken over (step S157). For example, every time the “course” switch is pressed, the operation integration time is changed from 1000 → 2000 → 3000 →... → 8000 (hours). The input operation integration time is displayed on the display unit 7 in the same manner as the above-described operation integration time display method. Thereby, the repair / inspection operator can check the written accumulated operation time and determine whether it is correct (step S158). If the written operation accumulated time is correct, the memory writing is completed by pressing a predetermined operation of the operation unit 6, for example, a “pause / start” switch once (step S159). Thereafter, the demonstration operation is terminated (step S154).

In step S156, when the accumulated operation time input to the memory is equal to or longer than the first predetermined time, the repair / inspection operator sets a value equal to or greater than the second predetermined time (15000 hours) as the accumulated operation time, for example, 16000. The time is input (step S160), the control unit 31 displays the input operation accumulated time, and the repair / inspection operator confirms the display content (step S158).

And the control part 31 completes the writing to a memory (step S159), and complete | finishes demonstration operation (step S154).

When repairing due to a failure, the accumulated operation time is usually less than the first predetermined time, so the demonstration operation ends. However, in the case of the inspection after the inspection display, in step S160, by setting the accumulated operation time to a value equal to or greater than the maximum value of 15000 hours in the memory of the storage unit 23, in the normal operation after the inspection is completed, The "" lamp will no longer light up.

In the present embodiment, the example of simplifying the configuration of the control unit 31 that controls the flow of the demonstration operation described above by performing the determination in step S156 by the repair / inspection operator is shown, but step S156 is also shown. Including all the steps can be automatically performed by the control unit 31.

In the conventional dishwasher, the memory of the storage unit 23 was cleared at the time of inspection, and the accumulated operation time was returned to “0”. Then, even if the inspection is completed, the “inspection” lamp is turned on after about 10 years have passed, which causes misunderstanding of the user. Normally, after 20 years, there is a high possibility that the repair / replacement parts will be lost. Therefore, there is a possibility that an error message is sent to the user that the repair or inspection can be performed.

According to the dishwasher 51 of the present embodiment, when the accumulated operation time is not less than the first predetermined time at the time of inspection, in step S160, by intentionally writing a value not less than the second predetermined time as the accumulated operation time, It is possible to prevent the “check” lamp from turning on again.

Also, the replacement of the control device 34 at the time of repair due to a failure, the operation of hiding the inspection lamp at the time of long-term use, and the writing of the operation flag can all be performed by a simple method of demo operation. As a result, the failure / inspection operator can easily perform repairs and inspection work without operating it by mistake or performing a plurality of methods and means.

In addition, once the “inspection” lamp is lit and the repair / inspection operator completes the inspection, the “inspection” lamp can be prevented from being lit again thereafter. Absent.

In the present embodiment, the accumulated operation time is stored in the storage unit 23, but the same effect can be obtained even when the number of operations or the energization time to the control device 34 is used as information related to the operation progress state. .

Further, in the present embodiment, an example in which the display unit 7 is configured by a plurality of display lamps has been shown. However, for example, by using a 7-segment numeric display lamp or the like, the operation integrated time can be displayed in more detail. it can.

In the present embodiment, an example in which the demonstration operation is performed by a predetermined operation of the operation unit 6 has been described. However, a dedicated switch for performing the demonstration operation may be provided in the control device 34.

Further, the operation flag rewrite setting, the operation integration time takeover processing, the writing processing, and the like accompanying the replacement of the control device 34 are performed by predetermined operations of the operation unit 6. However, the present invention is not limited to this example, and a dedicated switch may be provided in the control device 34, or the processing described above may be performed from an externally connected device such as a memory writer.

(Third embodiment)
Next, the dishwasher 52 in the 3rd Embodiment of this invention is demonstrated.

FIG. 10 is a cross-sectional view of the dishwasher 52 in the third embodiment of the present invention. In FIG. 10, the same components as those in the dishwasher 50 described in the first embodiment or the dishwasher 51 described in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

The dishwasher 52 is different from the dishwasher 50 described in the first embodiment of the present invention and the dishwasher 51 described in the second embodiment. The control part 21 and the control part 31 of the dishwasher 51 are different control points.

FIG. 11 is a functional block diagram showing the configuration of the control device 44 of the dishwasher 52 in the third embodiment of the present invention.

As shown in FIG. 11, the control device 44 includes a load driving unit 22, a storage unit 23, and a control unit 41.

The load driving unit 22 drives the water supply unit 5, the heating unit 11, the cleaning pump 15, and the like. The storage unit 23 stores information related to the driving progress state, and can read, write, and erase information. The control unit 41 exchanges information with the operation unit 6, the display unit 7, the load driving unit 22, and the storage unit 23, and sequentially controls each process of cleaning, rinsing, and drying. As the information related to the operation progress state, any one of the integrated operation time of the dishwasher 52, the number of operations, and the energization time of the control device 44 can be used. In the following description, it is assumed that the operation integration time is set as information related to the operation progress state.

When the user performs a predetermined operation on the operation unit 6, it is possible to display the driving progress state stored in the storage unit 23 on the display unit 7 and to store information related to the new driving progress state. 23 can be written.

In addition, it is assumed that the dishwasher 52 of the present embodiment also includes the operation unit 6 and the display unit 7 shown in FIG.

FIG. 12 is a flowchart showing an operation at the time of operation of the dishwasher 52 in the third embodiment of the present invention. The operation and action of the control device 44 of the dishwasher 52 will be described with reference to the drawings.

First, the operation and action of the dishwasher 52 in a normal use state by the user will be described with reference to FIG. 3 and FIG.

First, the user presses the “Power OFF / ON” switch on the operation unit 6. Subsequently, the operation is started by pressing a “pause / start” switch (step S210).

The control unit 41 determines whether or not the operation flag n stored in advance in the storage unit 23 to start the operation is n = 1 (step S211).

When the dishwasher 52 performs inspection at the time of factory shipment, it is assumed that the operation flag n = 1 is written in the storage unit 23 if it is normal.

When the operation flag n = 0, the control unit 41 determines whether the accumulated operation time stored in the storage unit 23 is less than the first predetermined time (step S212).

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 on the display unit 7. The operation is disabled (step S213).

For example, when the control device 44 is replaced by repair, the factory flag is not inspected, so the operation flag n remains at the initial value “0”. Further, since the control device 44 is immediately after replacement, the accumulated operation time is less than the first predetermined time.

As the first predetermined time, an accumulated operation time that requires inspection by a repair / inspection operator due to long-term use is set. For example, a time corresponding to use for about 10 years (7000 hours) is set. When the control device 24 is replaced due to repair or the like, it is necessary to set the operation flag to n = 1 or n = 0 by a method described later (see FIG. 5).

In step S212, when the accumulated operation time is equal to or longer than the first predetermined time, the control unit 41 determines that the operation is normal. If it is further determined that the accumulated operation time is less than the second predetermined time (step S214), the cleaning, rinsing, and drying processes are normally operated (step S216).

The control part 41 adds this driving | running time to driving | running | working integration time after completion | finish of driving | operation of each process, and memorize | stores it in the memory | storage part 23 (step S217). Thereafter, the operation is terminated (step S218).

Here, 7000 hours corresponding to about 10 years is set as the first predetermined time, but 9000 hours corresponding to about 12 years is set as the second predetermined time, and about 15 years is set as the third predetermined time. A considerable 11000 hours are set for each.

In step S211, when the operation flag is n = 1, the control unit 41 determines whether or not the operation integration time is less than the first predetermined time (step S219). When the accumulated operation time is equal to or longer than the first predetermined time, the inspection lamp of the display unit 7 is turned on in order to warn and display to the user that inspection by long-term use is necessary (step S220).

Subsequently, when the control unit 41 determines that the accumulated operation time is less than the second predetermined time (step S214), the control unit 41 normally operates the cleaning, rinsing, and drying processes (step S216).

After the operation of each process is finished, the control unit 41 adds the current operation time to the operation integration time and stores it in the storage unit 23 (step S217). Thereafter, the operation is terminated (step S218).

As described above, in the dishwasher 52 according to the present embodiment, the check lamp is always provided when the factory integrated state (operation flag is n = 1) and the operation integration time is equal to or longer than the first predetermined time. Will be displayed and will continue to warn and display to the user. As a result, the user can notice the inspection display, and can request the repair / inspection operator to perform the inspection. When the inspection is completed, the repair / inspection operator sets the operation flag to n = 0, so that the subsequent inspection lamps are not displayed.

Next, the operation after the accumulated operation time becomes the second predetermined time or more will be described. If the control unit 41 determines that the accumulated operation time is equal to or longer than the second predetermined time and less than the third predetermined time (steps S214 and S215), the cleaning and rinsing process is normally operated, but the heater is used during drying. The drying process is operated by lowering the temperature by 20% and extending the operation time by 20% instead (step S221). After the operation is completed, the control unit 41 adds the current operation time to the accumulated operation time and stores it in the storage unit 23 (step S217). Thereafter, the operation is terminated (step S218).

Furthermore, if the control unit 41 determines that the accumulated operation time has reached or exceeded the third predetermined time (step S215), the cleaning and rinsing process is normally operated, but the heater temperature during drying is reduced by 50%, instead. The drying process is operated by extending the operation time by 50% (step S222). After the operation is completed, the control unit 41 adds the current operation time to the operation integration time and stores it in the storage unit 23 (step S217). Thereafter, the operation is terminated (step S218).

When the operation flag n = 1 in the demonstration operation at the time of factory shipment in the dishwasher 52 and the long-term use, the “inspection” lamp is turned on, and the operation flag n = 0 in the inspection work performed by the repair / inspection operator is set. The setting will be described. In this case, the dishwasher 52 performs each step of FIG. 5 similarly to the dishwasher 50 demonstrated in 1st Embodiment. In the dishwasher 52, the control unit 41 performs the operation of the control unit 21 in FIG. In step S59 and step S62, it is determined whether or not the operation integration time is less than the first predetermined time.

Thereby, also in the dishwasher 52 of this Embodiment, replacement | exchange of the control apparatus 44 at the time of repair by failure, operation of the inspection lamp non-display at the time of long-term inspection, and also the dishwasher 52 at the time of factory shipment All of the operation flag writing can be performed by a simple method called demo operation. As a result, the failure / inspection operator can easily perform repairs and inspection work without operating mistakes or using a plurality of methods and means.

In addition, once the “inspection” lamp is lit and the repair / inspection operator completes the inspection, the “inspection” lamp can be prevented from being lit again thereafter. Absent. Further, even after the inspection is completed, the data of the accumulated operation time is not reset, so that data can be saved.

Further, in the dishwasher 52 of the present embodiment, after the inspection is completed, when the user continues to use the dishwasher 52 as it is, the second predetermined time and the third predetermined time are thereafter passed in two stages. To lower the operating performance (for example, lower the heater temperature during drying). In this case, it is possible to make the user recognize that the endurance period of the dishwasher is coming by increasing the operation time instead. Thereby, it is possible to motivate the user that the dishwasher 52 is in the replacement period without displaying the check again. In addition, since the dishwasher 52 has already exceeded the period of use in which reliability and safety can be ensured, the user is informed that it is difficult to ensure reliability and safety, and the user is misunderstood. Can be eliminated.

In the present embodiment, when the second predetermined time has elapsed, when the third predetermined time has elapsed, the driving performance is lowered in two stages, and driving is performed for a longer time than usual. It is easy to notice overuse time sensuously. However, the present invention is not limited to this example, and the same effect can be obtained even if it is performed in one stage. Conversely, it is also possible to provide a determination time for further elapse of a predetermined time such as a fourth predetermined time, a fifth predetermined time, etc., 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 during drying, but in addition, 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 by extending the driving time.

In the present embodiment, the accumulated operation time is stored in the storage unit 23, but the same effect can be obtained even when the number of operations or the energization time to the control device 44 is used as information related to the operation progress state. .

Further, in the present embodiment, an example in which the display unit 7 is configured by a plurality of display lamps has been shown. However, for example, by using a 7-segment numeric display lamp or the like, the operation integrated time can be displayed in more detail. it can.

In the present embodiment, an example in which the demonstration operation is performed by a predetermined operation of the operation unit 6 has been described. However, a dedicated switch for performing the demonstration operation may be provided in the control device 44.

Further, the operation flag rewrite setting, the operation integration time takeover processing, the writing processing, and the like accompanying the replacement of the control device 44 are performed by predetermined operations of the operation unit 6. However, the present invention is not limited to this example, and a dedicated switch may be provided in the control device 44, or the processing described above may be performed from an externally connected device such as a memory writer.

As described above, according to the dishwasher of the present invention, at the time of inspection performed by a repair / inspection operator, it is possible not to perform the inspection display regardless of the operation time and the number of operations of the subsequent dishwasher, It is possible to prevent misunderstandings for the user and dissatisfaction due to the absence of replacement parts.

As described above, according to the dishwasher of the present invention, the fact that the inspection has been completed is stored in the storage unit, and thereafter the information relating to the operation progress state continues, regardless of the operation progress state, again, Since the inspection display is not performed, it is possible to achieve a special effect that the user is not misunderstood. Therefore, it is useful as a dishwasher etc. which wash | cleans to-be-washed objects, such as tableware, with a wash water.

DESCRIPTION OF SYMBOLS 1 Case 2 Opening part 3 Tableware 4 Washing tank 5 Water supply part 6 Operation part 7 Display part 8 Rail 9 Tableware basket 10 Washing nozzle 11 Heating part 12 Drain outlet 13 Temperature detection part 14 Motor 15 Washing pump 16 Cover body 17 Parallel link Mechanism 18 Seal member 20 Blower
21, 31, 41 Control unit 22 Load drive unit 23 Storage unit (memory)
24, 34, 44 Control device 50, 51, 52 Dishwasher

Claims (7)

A dishwasher for washing objects,
An operation unit for inputting instructions to the dishwasher;
Based on the instruction input by the operation unit, a control unit that performs operation control of the dishwasher,
A display unit for displaying the operation status of the dishwasher;
Storing information related to the driving progress state, and comprising a storage unit capable of reading and writing the information,
When the control unit determines that the operation time equal to or longer than the first predetermined time has elapsed based on the information related to the operation progress state stored in the storage unit, the display unit displays the dishwasher. We display inspection to inform that inspection time has come,
During the inspection, the information related to the operation progress state stored in the storage unit is rewritten, and thereafter, the dishwasher is configured not to display the inspection again regardless of the operation progress state of the dishwasher. . The information related to the operation progress state stored in the storage unit can be selectively set from at least two values according to whether or not the operation time of the dishwasher has exceeded the first predetermined time. Having a driving flag which is
The dishwasher according to claim 1. The control unit displays and hides the inspection by the display unit according to the value of the operation flag when the operation time of the dishwasher has exceeded the first predetermined time during normal operation. Make it different,
The dishwasher according to claim 2. The control unit displays on the display unit whether or not the operation time of the dishwasher has passed the first predetermined time or more based on the value of the operation flag at the time of inspection and repair.
The dishwasher according to claim 2. When the storage unit is replaced, the control unit takes over the information related to the operation progress state stored in the storage unit before replacement to the storage unit after replacement,
The dishwasher according to any one of claims 2 to 4, wherein the value of the operation flag can be changed in accordance with information related to the operation progress state. The control unit, when the operation time of the dishwasher is more than the first predetermined time and less than the second predetermined time, based on the information related to the operation progress state stored in the storage unit When it is determined, the display unit informs that the dishwasher inspection time has come,
At the time of inspection, the information related to the operation progress state stored in the storage unit is rewritten to a value equal to or longer than the second predetermined time, and thereafter, regardless of the operation progress state of the dishwasher, again The dishwasher according to claim 1, wherein the inspection is not displayed. The controller is
7. The operation according to claim 1, wherein after the inspection, when it is determined that the operation time of the dishwasher has exceeded a second predetermined time, the operation is performed in a state in which the operation performance is deteriorated for a longer time than usual. dishwasher.

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