JP7065750B2 - Dishwasher - Google Patents

Description

The present invention relates to a dishwasher provided with a rinsing unit for charging a rinsing into a washing tank during a washing operation.

In order to prevent the traces of water droplets from remaining on the surface of the object to be washed such as tableware after drying and the occurrence of cloudiness on transparent glass products, etc., and to improve the finish after washing. Dry finishes are effective. Therefore, conventionally, a dishwasher in which a rinse is added as a drying finish during a washing operation is used (see, for example, Patent Document 1).

In Patent Document 1, a predetermined amount of rinse stored in the drug tank is charged into the cleaning tank by the action of a drug supply device consisting of a drug tank built in the door and a drug charging machine connected to the drug tank during the cleaning operation. are doing.

Japanese Unexamined Patent Publication No. 6-327608

When the rinse is put into the washing tank, it dries more easily than when the rinse is not put into the washing tank. Therefore, when the rinse is put into the washing tank, there is room for reducing the running cost by reducing the power consumption by shortening the time of the drying step of the washing operation. However, since the conventional dishwasher performs the same processing in the washing operation regardless of whether or not the rinse is added, there is a problem that the power consumption cannot be suppressed when the rinse is added to the washing tank. there were.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a dishwasher capable of reducing running costs.

The dishwasher according to the present invention has a washing tank for accommodating dishes, a blower fan for supplying air to the washing tank, a drying heater for heating the air supplied to the washing tank, and the washing tank. The rinsing unit is provided with a rinsing unit for charging the rinsing and a control device for sequentially executing a washing step, a rinsing step, a final rinsing step, and a drying step in a washing operation for washing the dishes housed in the washing tank. The unit includes a rinse tank that stores the rinse inside, a rinse pump that conveys the rinse stored in the rinse tank to the washing tank, and a remaining amount detection unit that detects the remaining amount of the rinse stored in the rinse tank. In the final rinsing step, the control device determines whether or not the rinse has been charged into the cleaning tank, and if it is determined that the rinse has not been charged into the cleaning tank, the blower fan and the above. When the drying heater is driven to perform the drying step and it is determined that the rinse has been put into the washing tank, the blowing fan is driven to perform the drying step without driving the drying heater . be.

According to the dishwasher according to the present invention, when the rinse is put into the washing tank, the set water temperature when the washing water is heated by the water heater is lower than when the rinse is not put into the washing tank. .. By doing so, power consumption can be suppressed and running costs can be reduced.

It is sectional drawing seen from the right side which shows the schematic structure of the dishwasher which concerns on Embodiment 1 of this invention. It is a perspective view which shows the rinse unit of the dishwasher which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the rinsing unit of the dishwasher which concerns on Embodiment 1 of this invention. It is a functional block diagram of the dishwasher which concerns on Embodiment 1 of this invention. It is a flowchart which shows the washing operation of the dishwasher which concerns on Embodiment 1 of this invention. It is a flowchart which shows the final rinsing process of the washing operation of the dishwasher which concerns on Embodiment 1 of this invention. It is a flowchart which shows the final rinsing process of the washing operation of the dishwasher which concerns on Embodiment 2 of this invention. It is a flowchart which shows the drying process of the washing operation of the dishwasher which concerns on Embodiment 2 of this invention. It is a flowchart which shows the drying process of the washing operation of the dishwasher which concerns on Embodiment 3 of this invention. It is a flowchart which shows the drying process of the washing operation of the dishwasher which concerns on Embodiment 4 of this invention. It is a flowchart which shows the drying process of the washing operation of the dishwasher which concerns on Embodiment 5 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Further, in the drawings below, the relationship between the sizes of the constituent members may differ from the actual one. Further, in the following description, terms indicating directions (for example, "top", "bottom", "left", "right", "front", "rear", etc.) are appropriately used for ease of understanding. This is for illustration purposes only and these terms are not intended to limit the invention of the present application.

Embodiment 1.
FIG. 1 is a cross-sectional view taken from the right side showing a schematic configuration of the dishwasher 100 according to the first embodiment of the present invention.
As shown in FIG. 1, the dishwasher 100 according to the first embodiment has a front opening having an open front surface, and has a substantially box-shaped washing machine main body 1 which is an outer shell of the dishwasher 100. It is provided. The washing machine main body 1 is provided with a washing tank 2 having a top surface opening and a substantially box-shaped washing tank 2 for accommodating the tableware 3 placed in the tableware basket 4.

An inner lid 12 for opening and closing the upper surface opening of the cleaning tank 2 is provided on the upper surface of the cleaning tank 2. Further, on the front surface of the washing tank 2, a door 13 that opens and closes when the washing tank 2 provided inside the washing machine main body 1 is taken out is provided, and inside the washing machine main body 1, the door 13 is opened and closed. A door open / close detection device 14 for detecting the above is provided. In the washing tank 2, a tableware basket 4 on which the tableware 3 is placed, a water temperature detecting device 15 for detecting the temperature of the water stored in the washing tank 2, and a water heater 18 for heating the washing water are provided. , A cleaning nozzle 9 for ejecting cleaning water is provided.

At the bottom of the cleaning tank 2, a cleaning pump 8 that pumps the cleaning water to the cleaning nozzle 9, a drainage pump 11 that discharges the cleaning water contaminated by cleaning, and a slide device that pushes out or pulls out the cleaning tank 2 from the cleaning machine main body 1. 40 is provided. Here, the water pressurized by the washing pump 8 is sent to the washing nozzle 9, from which water is sprayed toward the tableware 3, and the tableware 3 is washed. Then, after washing the tableware 3, the washing water stored in the washing tank 2 is drained by the drainage pump 11.

The float chamber 19 communicating with the opening formed in the lower side surface of the washing tank 2 is provided with a water level detecting device 16 for detecting the water level of the water stored in the washing tank 2.

Inside the washing machine main body 1, a water supply valve 10 for supplying tap water to the washing tank 2 and a latch device 6 for holding the washing tank 2 housed in the washing machine main body 1 are provided. The latch device 6 is provided with a spring 7 for urging the latch device 6. Further, behind the washing tank 2, a blower fan 17 that supplies air into the washing tank 2 to dry the tableware 3 and a drying heater 20 that heats the air supplied into the washing tank 2 are provided. Has been done.

The inner lid 12 is attached to the upper part of the inner surface of the washing machine main body 1. One end of a link mechanism (not shown) is attached to the inner lid 12, and the other end of the link mechanism is attached to the upper part of the inner surface of the washing machine main body 1. Then, by this link mechanism, the inner lid 12 is lifted when the washing tank 2 is pulled out from the washing machine main body 1, and the washing tank 2 can be opened. As a result, when the washing tank 2 is pulled out from the washing machine main body 1, the inner lid 12 is not pulled out together with the washing tank 2. On the other hand, when the washing tank 2 is pushed in, the inner lid 12 is lowered by this link mechanism so that the washing tank 2 can be closed.

The washing tank 2 can be moved forward and backward by a fixed rail 5 provided in the washing machine main body 1 and a movable rail (not shown) provided in the washing tank 2. Further, when the washing tank 2 is pushed to a predetermined holding position in the internal direction of the washing machine main body 1, the washing tank 2 is held at a predetermined position by the latch device 6. At this time, in the latch device 6, the cleaning tank 2 is urged by the spring 7 with a force opposite to the pulling direction, and the cleaning tank 2 can be held. Therefore, the washing tank 2 does not move forward except when necessary.

Further, in the space between the back surface of the door 13 and the front surface of the washing tank 2, a control device 50 for controlling the operation of the dishwasher 100 and a rinsing unit 80 for charging the rinse into the washing tank 2 are provided. ing.

FIG. 2 is a perspective view showing a rinse unit 80 of the dishwasher 100 according to the first embodiment of the present invention.
As shown in FIG. 2, the rinse unit 80 includes a rinse tank 81, a rinse pump 82, a first input hose 83, a second input hose 84, a replenishment port 85, a pump holding member 86, and a remaining amount detection. It has a part 87 and. The rinse tank 81 has a rectangular parallelepiped shape and stores the rinse inside. The rinse pump 82 is provided on the upper portion of the rinse tank 81, and conveys the rinse stored in the rinse tank 81 to the cleaning tank 2.

The first charging hose 83 connects the rinse tank 81 and the rinse pump 82, and the rinse sucked from the rinse tank 81 flows. The second input hose 84 has a function as a relay path for connecting the rinse pump 82 and the cleaning tank 2, and the rinse conveyed from the rinse pump 82 to the cleaning tank 2 flows. The replenishment port 85 is provided at the upper part of the rinse tank 81 and is an opening for the user to replenish the rinse. The pump holding member 86 fixes the rinse pump 82 to the upper part of the rinse tank 81.

The rinse is generally used as a drying finish when using the dishwasher 1. Since the amount of rinse used per operation is very small, the rinse tank 81 stores a plurality of rinses.

FIG. 3 is a cross-sectional view showing a rinse unit 80 of the dishwasher 100 according to the first embodiment of the present invention.
As shown in FIG. 3, the remaining amount detecting unit 87 detects the remaining amount of the rinse stored in the rinse tank 81. A plurality of rinses are stored in the rinse tank 81, but the remaining amount decreases as the washing operation is repeated. The remaining amount detecting unit 87 has a float 88 extending in the vertical direction. Since the float 88 floats on the rinse, it moves in the vertical direction according to the remaining amount of the rinse in the rinse tank 81. Then, the remaining amount detecting unit 87 detects the remaining amount of the rinse based on the position of the float 88.

The remaining amount detecting unit 87 detects, for example, the remaining amount of the rinse in the rinse tank 81 in three stages. The first-stage remaining amount threshold Th1 is an index indicating a state in which the rinse tank 81 is fully filled with rinse, and the second-stage remaining amount threshold Th2 is an index indicating a state in which rinse needs to be replenished. The stage remaining amount threshold Th3 is an index indicating a state in which rinse is almost nonexistent. Here, when the float 88 is at the uppermost stage, it is located on the first stage remaining amount threshold Th1. Further, when the float 88 is at the lowest stage, it is located on the third stage remaining amount threshold value Th3. The float 88 is lower than the height between the first-stage remaining amount threshold Th1 and the second-stage remaining amount threshold Th2. Therefore, when the float 88 is not on any of the remaining amount threshold values, the float 88 is located between the first stage remaining amount threshold value Th1 and the second stage remaining amount threshold value Th2.

In addition, the remaining amount detection unit 87 replaces the third stage remaining amount threshold Th3 with the change amount of the current value flowing through the rinse pump 82 or the change amount of the rotation speed of the motor for driving the rinse pump 82. The remaining amount may be detected. The change in the value of the current flowing through the rinse pump 82 and the change in the rotation speed of the motor are caused by the change in the load of the rinse pump 82. The change in load means that the remaining amount of rinse in the rinse tank 81 is extremely low. That is, it is possible to determine whether or not the rinse is charged from the rinse unit 80 into the cleaning tank 2 by the change in the load.

FIG. 4 is a functional block diagram of the dishwasher 100 according to the first embodiment of the present invention.
The control device 50 is composed of, for example, dedicated hardware or a CPU (also referred to as a central processing unit, a central processing unit, a processing unit, an arithmetic unit, a microprocessor, or a processor) that executes a program stored in a storage device 52. ing.

The control device 50 receives an operation instruction from the user to the dishwasher 100 via the operation unit 21 provided on the door 13, and receives various electric signals from a device such as the door open / close detection device 14. Then, the control device 50 controls the operation of the dishwasher 100 in response to an operation instruction from the user or an electric signal from various devices and the like. That is, the control device 50 controls at least one of the electrical components constituting the device. Further, the control device 50 has a function of measuring time. It should be noted that the configuration may be such that a time measuring unit for measuring time is provided outside the control device 50.

Further, the dishwasher 100 according to the first embodiment includes various drive circuits. The water heater drive circuit 57 controls the temperature of the water heater 18 in response to a control command from the control device 50. The water supply valve drive circuit 53 controls operations such as opening and closing of the water supply valve 10 in response to a control command from the control device 50. The cleaning pump drive circuit 54 controls the operation of the cleaning pump 8 in response to a control command from the control device 50. The drainage pump drive circuit 55 controls the operation of the drainage pump 11 in response to a control command from the control device 50. The blower fan drive circuit 56 controls the rotation speed of the blower fan 17 in response to a control command from the control device 50. The drying heater drive circuit 61 controls the temperature of the drying heater 20 in response to a control command from the control device 50. The display unit drive circuit 58 controls the display image displayed on the display unit 63 provided on the door 13 in response to a control command from the control device 50. The slide device drive circuit 59 controls the operation of the motor of the slide device 40 in response to a control command from the control device 50. The rinsing unit drive circuit 51 controls the operation of the rinsing pump 82 of the rinsing unit 80 in response to a control command from the control device 50. The current detection circuit 60 detects the current flowing through the rinse pump 82.

Further, the dishwasher 100 according to the first embodiment is provided with a storage device 52 for storing various information, and the storage device 52 is connected to the control device 50 by electrical wiring, printed wiring, or the like. ..

Next, the control of the rinse unit 80 by the control device 50 will be described.
For example, the control device 50 fixes the operating time of the rinse pump 82 in order to fix the input amount of one rinse. The operating time of the rinse pump 82 per operation is, for example, 2 seconds. Further, the control device 50 operates the rinse pump 82 based on the remaining amount of the rinse detected by the remaining amount detecting unit 87. The control device 50 stops the rinse pump 82 when the remaining amount of the rinse detected by the remaining amount detecting unit 87 becomes equal to or less than the remaining amount threshold value. Specifically, when the remaining amount of the rinse detected by the remaining amount detecting unit 87 is equal to or less than the third stage remaining amount threshold Th3, the control device 50 has almost no rinse and is charged into the washing tank 2. Judging that it is difficult, the rinse pump 82 is stopped.

Further, when the remaining amount of the rinse detected by the remaining amount detecting unit 87 becomes equal to or less than the second stage remaining amount threshold value Th2, the control device 50 informs the display unit 63 to replenish the rinse. Display. As a result, the user refills the rinse tank 81 with the rinse. Even if the remaining amount of the rinse becomes equal to or less than the second stage remaining amount threshold Th2, the rinse is not stopped immediately. This is because even if the remaining amount of the rinse becomes the second stage remaining amount threshold Th2 or less, the user does not always notice it immediately, and the washing operation may continue. Therefore, the difference between the second-stage remaining amount threshold Th2 and the third-stage remaining amount threshold Th3 may be a remaining amount that allows the user to start replenishing the rinse, and when converted into the number of operations, for example, 4 It is preferable that the number of times is a plurality of times such as 5 times. When the remaining amount of rinse detected by the remaining amount detecting unit 87 exceeds the first-stage remaining amount threshold value Th1, the control device 50 displays that the display unit 63 is fully filled with the rinse tank 81, and the user. Is urged to stop replenishing the rinse.

The control device 50 rinses when the remaining amount of rinse detected by the remaining amount detection unit 87 exceeds the remaining amount threshold value after the remaining amount of rinse detected by the remaining amount detecting unit 87 becomes equal to or less than the remaining amount threshold value. Operate the pump 82. Since the control device 50 bleeds air from the first charging hose 83, which is a rinsing transport path, the rinsing pump 82 conveys the amount of rinsing to the cleaning tank 2 when the first charging hose 83 is fully filled. To operate. After the remaining amount of rinse becomes equal to or less than the remaining amount threshold value, the remaining amount of rinse exceeds the remaining amount threshold value by replenishing the rinse by the user. The remaining amount threshold value at this time is, for example, the third stage remaining amount threshold value Th3. When the remaining amount of the rinse reaches the third stage remaining amount threshold Th3, the amount of the rinse that can be sucked when the rinse pump 82 operates is insufficient, and air is mixed in the first charging hose 83.

As described above, the control device 50 fixes the operating time of the rinse pump 82 in order to fix the input amount of one rinse. Therefore, when air is mixed in the first charging hose 83, the amount of rinsing that does not contain air in the normal state and the amount of rinsing that contains air are different from each other. Even if the operating time of the rinsing pump 82 is changed when air is contained, the amount of air mixed in is unknown and the amount of rinsing is very small, so the rinsing amount is the same as in the normal case. That is difficult. Therefore, in the first embodiment, when air is mixed, the air in the first input hose 83, which is the transport path of the rinse, is bleeded, so that the amount of rinse when the first input hose 83 is fully filled. The air bleeding process for operating the rinse pump 82 is performed so as to convey the hose to the cleaning tank 2.

FIG. 5 is a flowchart showing a washing operation of the dishwasher 100 according to the first embodiment of the present invention.
Next, the washing operation of the dishwasher 100 according to the first embodiment will be described with reference to FIG. As shown in FIG. 5, in the washing operation, the preparation step, the washing step, the rinsing step, the final rinsing step, and the drying step are sequentially executed.

(Step S100)
First of all, the control device 50 performs a preparatory step. In the preparatory step, for example, before the start of cleaning, the water level detection device 16 is used to check the inside of the cleaning tank 2 to see if water has accumulated in the cleaning tank 2, and there is no water leakage from the water supply valve 10. Confirmation is done.

(Step S200)
Next, the control device 50 performs a cleaning step. In the cleaning step, the water supply valve 10 is opened and the cleaning water is supplied into the cleaning tank 2. Then, when the water level detecting device 16 detects the supply of a predetermined amount of washing water, the water supply valve 10 is closed. Next, the water heater 18 is energized and the washing water is heated to a desired temperature. Then, the washing pump 8 is energized, the warmed washing water is pressure-fed to the washing nozzle 9, the washing water is ejected from the washing nozzle 9, and the tableware 3 is washed. At this time, the cleaning nozzle 9 is rotated by the reaction force generated by the injection of the cleaning water. As a result, the washing water is evenly sprayed onto the tableware 3 arranged in the washing tank 2. The washing water sprayed into the washing tank 2 falls, collects in the lower part of the washing tank 2, and is sprayed again from the washing nozzle 9. And this cycle is repeated. In the washing operation, since the washing tank 2 is housed in the washing machine main body 1, the washing water does not scatter outside the washing tank 2. After that, when the predetermined time elapses and the washing water reaches a desired temperature, the energization of the water heater 18 and the washing pump 8 is stopped. Further, the drainage pump 11 is energized, and the sewage in the washing tank 2 is discharged to the outside.

(Step S300)
Next, the control device 50 performs a rinsing step. In the rinsing step, after the drainage is completed, the energization of the drainage pump 11 is stopped, the water supply valve 10 is opened, and new washing water is supplied into the washing tank 2. After that, the tableware 3 is rinsed by the same operation as the above-mentioned washing operation, and when the rinsing for a predetermined time is completed, the washing water used for the rinsing is drained. Such rinsing and drainage are repeated several times. This repetition is a rinsing process.

(Step S400)
Next, the control device 50 performs the final rinsing step. In the final rinsing step, after the drainage before the final rinsing is completed, the energization of the drainage pump 11 is stopped, the water supply valve 10 is opened, and new washing water is supplied into the washing tank 2. At this time, the rinse is poured from the rinse tank 81 and added to the washing water for rinsing, and the tableware 3 is in a state suitable for a dry finish. After that, the tableware 3 is rinsed by the same operation as the above-mentioned rinsing step, and when the rinsing for a predetermined time is completed, the washing water used for the rinsing is drained.

Here, in the final rinsing step, the control device 50 operates the rinsing pump 82 so as to transfer the amount of rinsing to be fully filled in the rinsing tank 81 to the washing tank 2 before the wastewater treatment before the final rinsing. .. The air bleeding process is completed by removing the air in the first charging hose 83 and the rinsing pump 82 and filling the rinsing. When air is contained, the amount of air mixed in is unknown, so it is difficult to know the operating time required to completely remove the air. Therefore, the operating time is preferably longer than the time required for the rinse pump 82 and the first charging hose 83 to be completely filled from the empty state.

In the first embodiment, the air bleeding treatment is performed before the wastewater treatment before the final rinsing. This air bleeding process may be performed during the cleaning step. If the air bleeding process is performed at the time of charging the normal rinsing, the smaller the amount of air contained in the first charging hose 83, the larger the amount of rinsing will be charged compared to the normal charging amount. As a result, the rinse may remain in the tableware 3 and the washing tank 2 after the drying step. Therefore, in the first embodiment, the air bleeding treatment is performed immediately before the wastewater treatment. As a result, even if the rinse is excessively put into the washing tank 2, it is immediately discharged together with the washing water, so that it is possible to prevent the rinse from remaining in the tableware 3 and the washing tank 2. The air bleeding process is performed as a process different from the normal rinsing injection process only at the first operation after the remaining amount of the rinse reaches the third stage remaining amount threshold value Th3.

(Step S500)
Finally, the control device 50 performs a drying step. In the drying step, the blower fan 17 and the drying heater 20 are energized, and outside air is introduced into the washing tank 2. The outside air is heated by the drying heater 20 to become warm air, which is sent into the washing tank 2 to dry the entire inside of the tableware 3 and the washing tank 2. The warm air used for drying is discharged to the outside through an exhaust port (not shown) provided on the door 13.

FIG. 6 is a flowchart showing a final rinsing step of the washing operation of the dishwasher 100 according to the first embodiment of the present invention.
Next, the details of the final rinsing step of the washing operation of the dishwasher 100 according to the first embodiment will be described with reference to FIG.

(Step S401)
The control device 50 performs water supply processing. When the water supply process is started, the control device 50 opens the water supply valve 10 and starts supplying water to the washing tank 2. Then, when the control device 50 detects that the inside of the washing tank 2 has reached the specified water level by the water level detecting device 16, the water supply valve 10 is closed, the water supply to the washing tank 2 is stopped, and the water supply process is completed. .. Here, the specified water level is the water level when the amount of water that can be washed in the tableware 3 placed in the tableware basket 4 is stored in the washing tank 2.

(Step S402)
The control device 50 determines whether or not the remaining amount of the rinse detected by the remaining amount detecting unit 87 exceeds the remaining amount threshold value. When the control device 50 determines that the remaining amount of the rinse exceeds the remaining amount threshold value (YES), the process proceeds to the process of step S403. On the other hand, when the control device 50 determines that the remaining amount of the rinse is equal to or less than the remaining amount threshold value (NO), the process proceeds to the process of step S404.

(Step S403)
The control device 50 energizes the rinse unit 80 to operate the rinse pump 82 for a predetermined time (for example, 2 seconds), and charges the rinse stored in the rinse tank 81 into the cleaning tank 2.

(Step S404)
The control device 50 energizes the cleaning pump 8 and injects cleaning water from the cleaning nozzle 9 into the cleaning tank 2.

(Step S405)
The control device 50 energizes the water heater 18 to heat the washing water in the washing tank 2.

(Step S406)
The control device 50 determines whether or not the rinse has been charged into the washing tank 2. When the control device 50 determines that the rinse has been charged into the washing tank 2 (YES), the process proceeds to step S407. On the other hand, when the control device 50 determines that the rinse has not been put into the washing tank 2 (NO), the process proceeds to step S408. It should be noted that, for example, the control device 50 stores information on whether or not the rinse pump 82 is operated in the final rinsing step in the storage device 52, and determines whether or not the rinse has been charged into the washing tank 2. ..

(Step S407)
The control device 50 determines whether or not the temperature of the washing water stored in the washing tank 2 detected by the water temperature detecting device 15 is equal to or higher than the preset water temperature T1a (<T1b). When the control device 50 determines that the temperature of the washing water stored in the washing tank 2 is equal to or higher than the set water temperature T1a (YES), the process proceeds to step S409. On the other hand, when the control device 50 determines that the temperature of the washing water stored in the washing tank 2 is lower than the set water temperature T1a (NO), the process of step S407 is performed again.

(Step S408)
The control device 50 determines whether or not the temperature of the washing water stored in the washing tank 2 detected by the water temperature detecting device 15 is equal to or higher than the preset water temperature T1b (> T1). When the control device 50 determines that the temperature of the washing water stored in the washing tank 2 is equal to or higher than the set water temperature T1b (YES), the process proceeds to step S409. On the other hand, when the control device 50 determines that the temperature of the washing water stored in the washing tank 2 is lower than the set water temperature T1b (NO), the process of step S408 is performed again.

(Step S409)
The control device 50 stops the energization of the water heater 18 and stops the heating of the washing water in the washing tank 2.

(Step S410)
The control device 50 determines whether or not a preset set time t1 or more has elapsed after the temperature of the washing water stored in the washing tank 2 reaches the set water temperature T1 or higher. When the control device 50 determines that the set time t1 or more has elapsed after the temperature of the washing water stored in the washing tank 2 becomes the set water temperature T1 or more (YES), the process proceeds to step S411. On the other hand, when the control device 50 determines that the set time t1 or more has not elapsed since the temperature of the washing water stored in the washing tank 2 becomes the set water temperature T1 or more (NO), the process of step S410 is performed again. I do.

(Step S411)
The control device 50 stops energizing the cleaning pump 8 and stops spraying cleaning water from the cleaning nozzle 9 into the cleaning tank 2.

(Step S412)
The control device 50 performs wastewater treatment. When the wastewater treatment is started, the control device 50 operates the drainage pump 11 to start drainage from the washing tank 2. Then, when the control device 50 detects that the water is not stored in the washing tank 2 by the water level detecting device 16, the operation of the drainage pump 11 is stopped to end the wastewater treatment.

As described above, in the dishwasher 100 according to the first embodiment, the set water temperature of the washing water is changed depending on whether or not the rinse is put into the washing tank 2 in the final rinsing step. That is, the set water temperature of the washing water when the rinse is put into the washing tank 2 is set lower than the set water temperature of the washing water when the rinse is not put into the washing tank 2. Here, when the entire inside of the tableware 3 and the washing tank 2 is dried in the drying step, the residual heat generated when the washing water in the washing tank 2 is heated by energizing the water heater 18 in the final rinsing step is used. There is. When the rinse is put into the washing tank 2, it dries more easily than when the rinse is not put into the washing tank 2. Therefore, even if the set water temperature of the washing water when the rinse is put into the washing tank 2 is set lower than the set water temperature of the washing water when the rinse is not put into the washing tank 2, the tableware is set in the drying process. 3 and the entire inside of the washing tank 2 can be dried. Therefore, in this way, the set water temperature of the washing water when the rinse is put into the washing tank 2 in the final rinsing step is set low. By doing so, power consumption can be suppressed and running costs can be reduced.

As described above, the dishwasher 100 according to the first embodiment includes a washing tank 2 for accommodating the tableware 3 and a water heater 18 for heating the washing water stored in the washing tank 2. Further, in the washing operation for washing the rinsing unit 80 for charging the rinsing into the washing tub 2 and the tableware 3 housed in the washing tub 2, the control for sequentially executing the washing step, the rinsing step, the final rinsing step, and the drying step. The device 50 and the like are provided. Further, the rinse unit 80 uses a rinse tank 81 for storing the rinse inside, a rinse pump 82 for transporting the rinse stored in the rinse tank 81 to the washing tank 2, and the remaining amount of the rinse stored in the rinse tank 81. The remaining amount detecting unit 87 for detecting is provided. Further, the control device 50 determines whether or not the rinse has been charged into the washing tank 2 in the final rinsing step. When it is determined that the rinse has been charged into the cleaning tank 2, the set water temperature at the time of heating the cleaning water with the water heater 18 is lower than that when it is determined that the rinse has not been charged into the cleaning tank 2. be.

According to the dishwasher 100 according to the first embodiment, when the rinse is put into the washing tank 2, the washing water is heated by the water heater 18 as compared with the case where the rinse is not put into the washing tank 2. Set the water temperature at the time to lower. By doing so, power consumption can be suppressed and running costs can be reduced.

Embodiment 2.
Hereinafter, the second embodiment of the present invention will be described, but the description thereof will be omitted for those overlapping with the first embodiment, and the same parts as those in the first embodiment or the corresponding parts will be designated by the same reference numerals.

FIG. 7 is a flowchart showing a final rinsing step of the washing operation of the dishwasher 100 according to the second embodiment of the present invention. FIG. 8 is a flowchart showing a drying step of the washing operation of the dishwasher 100 according to the second embodiment of the present invention.

Hereinafter, the details of the final rinsing step of the washing operation of the dishwasher 100 according to the second embodiment will be described with reference to FIG. 7. Since the preparation step, the cleaning step, and the rinsing step are the same as those in the first embodiment, the description thereof will be omitted. Further, since the processes of steps S401 to S405 and S409 to S412 in the final rinsing step are the same as those in the first embodiment, the description thereof will be omitted.

(Step S421)
The control device 50 determines whether or not the temperature of the washing water stored in the washing tank 2 detected by the water temperature detecting device 15 is equal to or higher than the set water temperature T1. When the control device 50 determines that the temperature of the washing water stored in the washing tank 2 is equal to or higher than the set water temperature T1 (YES), the process proceeds to step S409. On the other hand, when the control device 50 determines that the temperature of the washing water stored in the washing tank 2 is lower than the set water temperature T1 (NO), the process of step S421 is performed again.

Next, the details of the drying step of the washing operation of the dishwasher 100 according to the second embodiment will be described with reference to FIG.

(Step S501)
The control device 50 energizes the blower fan 17 to supply air to the cleaning tank 2.

(Step S502)
The control device 50 determines whether or not the rinse has been charged into the washing tank 2. When the control device 50 determines that the rinse has been charged into the washing tank 2 (YES), the process proceeds to step S504. On the other hand, when the control device 50 determines that the rinse has not been put into the washing tank 2 (NO), the process proceeds to step S503. It should be noted that, for example, the control device 50 stores information on whether or not the rinse pump 82 is operated in the final rinsing step in the storage device 52, and determines whether or not the rinse has been charged into the washing tank 2. ..

(Step S503)
The control device 50 energizes the drying heater 20 to heat the air supplied to the washing tank 2.

(Step S504)
The control device 50 determines whether or not a preset set time t2 or more has elapsed since the energization of the blower fan 17 was started. If it is determined that the set time t2 or more has elapsed since the control device 50 started energizing the blower fan 17 (YES), the process proceeds to step S505. On the other hand, when it is determined that the set time t2 or more has not elapsed since the control device 50 started energizing the blower fan 17 (NO), the process of step S504 is performed again.

(Step S505)
The control device 50 determines whether or not the drying heater 20 is energized. If it is determined that the control device 50 is energized to the drying heater 20 (YES), the process proceeds to step S506. On the other hand, when the control device 50 determines that the drying heater 20 is not energized (NO), the process proceeds to step S507.

(Step S506)
The control device 50 stops energizing the drying heater 20 and stops heating the air supplied to the washing tank 2.

(Step S507)
The control device 50 stops energizing the blower fan 17 and stops supplying air to the cleaning tank 2.

As described above, in the dishwasher 100 according to the second embodiment, whether or not the drying heater 20 is energized is changed during the drying step depending on whether or not the rinse is put into the washing tank 2 in the final rinsing step. That is, when the rinse is not charged into the washing tank 2 in the final rinsing step, the drying heater 20 is energized during the drying step, but when the rinse is charged into the washing tank 2 in the final rinsing step, the drying is performed. Do not energize the drying heater 20 during the process. Here, when the rinse is put into the washing tank 2, it dries more easily than when the rinse is not put into the washing tank 2. Therefore, when the rinse is put into the washing tank 2 in the final rinsing step, the entire inside of the tableware 3 and the washing tank 2 can be operated only by operating the blower fan 17 without energizing the drying heater 20 during the drying step. Can be dried. Therefore, when the rinse is put into the washing tank 2 in the final rinsing step as described above, the drying heater 20 is not energized during the drying step. By doing so, power consumption can be suppressed and running costs can be reduced.

As described above, the dishwasher 100 according to the second embodiment heats the washing tank 2 for accommodating the tableware 3, the blower fan 17 for supplying air to the washing tank 2, and the air supplied to the washing tank 2. It is provided with a drying heater 20. Further, in the washing operation for washing the rinsing unit 80 for charging the rinsing into the washing tub 2 and the tableware 3 housed in the washing tub 2, the control for sequentially executing the washing step, the rinsing step, the final rinsing step, and the drying step. The device 50 and the like are provided. Further, the rinse unit 80 uses the rinse tank 81 for storing the rinse inside, the rinse pump 82 for transporting the rinse stored in the rinse tank 81 to the washing tank 2, and the remaining amount of the rinse stored in the rinse tank 81. The remaining amount detecting unit 87 for detecting is provided. Further, the control device 50 determines whether or not the rinse has been charged into the washing tank 2 in the final rinsing step. Then, when it is determined that the rinse has not been put into the washing tank 2, the blower fan 17 and the drying heater 20 are driven to perform the drying step. On the other hand, when it is determined that the rinse has been put into the washing tank 2, the drying step is performed without driving the blower fan 17 and the drying heater 20.

According to the dishwasher 100 according to the second embodiment, when the rinse is put into the washing tank 2 in the final rinsing step, the drying heater 20 is not energized during the drying step. By doing so, power consumption can be suppressed and running costs can be reduced.

Embodiment 3.
Hereinafter, the third embodiment of the present invention will be described, but the description of the parts overlapping with the first and second embodiments will be omitted, and the same parts or the corresponding parts as those of the first and second embodiments will be designated by the same reference numerals. ..

FIG. 9 is a flowchart showing a drying step of the washing operation of the dishwasher 100 according to the third embodiment of the present invention.
Hereinafter, the details of the drying step of the washing operation of the dishwasher 100 according to the third embodiment will be described with reference to FIG. Since the preparation step, the cleaning step, and the rinsing step are the same as those in the first embodiment, and the final rinsing step is the same as the second embodiment, the description thereof will be omitted.

(Step S511)
The control device 50 determines whether or not the rinse has been charged into the washing tank 2. When the control device 50 determines that the rinse has been charged into the washing tank 2 (YES), the process proceeds to step S513. On the other hand, when the control device 50 determines that the rinse has not been put into the washing tank 2 (NO), the process proceeds to step S512. It should be noted that, for example, the control device 50 stores information on whether or not the rinse pump 82 is operated in the final rinsing step in the storage device 52, and determines whether or not the rinse has been charged into the washing tank 2. ..

(Step S512)
The control device 50 energizes the blower fan 17 to supply air to the cleaning tank 2. At this time, the control device 50 controls the rotation speed of the blower fan 17 so that the air volume FR1 (> FR2) supplied to the cleaning tank 2 becomes large.

(Step S513)
The control device 50 energizes the blower fan 17 to supply air to the cleaning tank 2. At this time, the control device 50 controls the rotation speed of the blower fan 17 so that the air volume FR2 (<FR1) supplied to the cleaning tank 2 becomes small.

(Step S514)
The control device 50 energizes the drying heater 20 to heat the air supplied to the washing tank 2.

(Step S515)
The control device 50 determines whether or not the set time t2 or more has elapsed since the energization of the blower fan 17 was started. If it is determined that the set time t2 or more has elapsed since the control device 50 started energizing the blower fan 17 (YES), the process proceeds to step S516. On the other hand, when it is determined that the set time t2 or more has not elapsed since the control device 50 started energizing the blower fan 17 (NO), the process of step S515 is performed again.

(Step S516)
The control device 50 stops energizing the drying heater 20 and stops heating the air supplied to the washing tank 2.

(Step S517)
The control device 50 stops energizing the blower fan 17 and stops supplying air to the cleaning tank 2.

As described above, in the dishwasher 100 according to the third embodiment, the rotation speed of the blower fan 17 is changed during the drying step depending on whether or not the rinse is put into the washing tank 2 in the final rinsing step. That is, when the rinse is charged into the cleaning tank 2 in the final rinsing step, the rotation speed of the blower fan 17 is lower than that when the rinse is not charged into the cleaning tank 2. Here, when the rinse is put into the washing tank 2, it dries more easily than when the rinse is not put into the washing tank 2. Therefore, when the rinse is put into the washing tank 2 in the final rinsing step, the entire inside of the tableware 3 and the washing tank 2 is dried even if the air volume FR2 supplied to the washing tank 2 during the drying step is small. Can be done. Therefore, when the rinse is charged into the cleaning tank 2 in the final rinsing step as described above, the rotation speed of the blower fan 17 is lowered as compared with the case where the rinse is not charged into the cleaning tank 2. By doing so, power consumption can be suppressed and running costs can be reduced.

As described above, the dishwasher 100 according to the third embodiment includes a washing tank 2 for accommodating the tableware 3 and a blower fan 17 for supplying air to the washing tank 2. Further, in the washing operation for washing the rinsing unit 80 for charging the rinsing into the washing tub 2 and the tableware 3 housed in the washing tub 2, the control for sequentially executing the washing step, the rinsing step, the final rinsing step, and the drying step. The device 50 and the like are provided. Further, the rinse unit 80 uses the rinse tank 81 for storing the rinse inside, the rinse pump 82 for transporting the rinse stored in the rinse tank 81 to the washing tank 2, and the remaining amount of the rinse stored in the rinse tank 81. The remaining amount detecting unit 87 for detecting is provided. Further, the control device 50 determines whether or not the rinse has been charged into the washing tank 2 in the final rinsing step. When it is determined that the rinse has been charged into the cleaning tank 2, the rotation speed of the blower fan 17 in the drying step is lower than when it is determined that the rinse has not been charged into the cleaning tank 2.

According to the dishwasher 100 according to the third embodiment, when it is determined that the rinse has been charged into the washing tank 2 in the final rinsing step, it is more dry than when it is determined that the rinse has not been charged into the washing tank 2. The rotation speed of the blower fan 17 in the process is lowered. By doing so, power consumption can be suppressed and running costs can be reduced.

Embodiment 4.
Hereinafter, the fourth embodiment of the present invention will be described, but the description of the parts overlapping with the first to third embodiments will be omitted, and the same parts or the corresponding parts as those of the first to third embodiments will be designated by the same reference numerals. ..

FIG. 10 is a flowchart showing a drying step of the washing operation of the dishwasher 100 according to the fourth embodiment of the present invention.
Hereinafter, the details of the drying step of the washing operation of the dishwasher 100 according to the fourth embodiment will be described with reference to FIG. Since the preparation step, the cleaning step, and the rinsing step are the same as those in the first embodiment, and the final rinsing step is the same as the second embodiment, the description thereof will be omitted.

(Step S521)
The control device 50 energizes the blower fan 17 to supply air to the cleaning tank 2.

(Step S522)
The control device 50 energizes the drying heater 20 to heat the air supplied to the washing tank 2.

(Step S523)
The control device 50 determines whether or not the rinse has been charged into the washing tank 2. When the control device 50 determines that the rinse has been charged into the washing tank 2 (YES), the process proceeds to step S525. On the other hand, when the control device 50 determines that the rinse has not been put into the washing tank 2 (NO), the process proceeds to step S524. It should be noted that, for example, the control device 50 stores information on whether or not the rinse pump 82 is operated in the final rinsing step in the storage device 52, and determines whether or not the rinse has been charged into the washing tank 2. ..

(Step S524)
The control device 50 determines whether or not a preset time t2a (> t2b) or more has elapsed since the energization of the blower fan 17 was started. If it is determined that the set time t2a or more has elapsed since the control device 50 started energizing the blower fan 17 (YES), the process proceeds to step S526. On the other hand, when it is determined that the set time t2a or more has not elapsed since the control device 50 started energizing the blower fan 17 (NO), the process of step S524 is performed again.

(Step S525)
The control device 50 determines whether or not a preset time t2b (<t2a) or more has elapsed since the energization of the blower fan 17 was started. If it is determined that the set time t2b or more has elapsed since the control device 50 started energizing the blower fan 17 (YES), the process proceeds to step S526. On the other hand, when it is determined that the set time t2b or more has not elapsed since the control device 50 started energizing the blower fan 17 (NO), the process of step S525 is performed again.

(Step S526)
The control device 50 stops energizing the drying heater 20 and stops heating the air supplied to the washing tank 2.

(Step S527)
The control device 50 stops energizing the blower fan 17 and stops supplying air to the cleaning tank 2.

As described above, in the dishwasher 100 according to the fourth embodiment, the energization time of the blower fan 17 and the drying heater 20 is changed during the drying step depending on whether or not the rinse is put into the washing tank 2 in the final rinsing step. The drying time is changed. That is, when the rinse is put into the washing tank 2 in the final rinsing step, the drying time is shorter than when the rinse is not put into the washing tank 2. Here, when the rinse is put into the washing tank 2, it dries more easily than when the rinse is not put into the washing tank 2. Therefore, when the rinse is put into the washing tank 2 in the final rinsing step, the entire inside of the tableware 3 and the washing tank 2 can be dried even if the drying time is shortened. Therefore, when the rinse is put into the washing tank 2 in the final rinsing step in this way, the energization time to the blower fan 17 and the drying heater 20 is shorter than when the rinse is not put into the washing tank 2. To shorten the drying time. By doing so, power consumption can be suppressed and running costs can be reduced.

As described above, in the dishwasher 100 according to the fourth embodiment, the control device 50 determines whether or not the rinse has been put into the washing tank 2 in the final rinsing step. Then, when it is determined that the rinse has been charged into the cleaning tank 2, the time of the drying step is shortened as compared with the case where it is determined that the rinse has not been charged into the cleaning tank 2.

According to the dishwasher 100 according to the fourth embodiment, when it is determined that the rinse has been charged into the washing tank 2 in the final rinsing step, it is more dry than when it is determined that the rinse has not been charged into the washing tank 2. It shortens the process time. By doing so, power consumption can be suppressed and running costs can be reduced.

Embodiment 5.
Hereinafter, the fifth embodiment of the present invention will be described, but the description of the parts overlapping with the first to fourth embodiments will be omitted, and the same parts or the corresponding parts as those of the first to fourth embodiments will be designated by the same reference numerals. ..

FIG. 11 is a flowchart showing a drying step of the washing operation of the dishwasher 100 according to the fifth embodiment of the present invention.
Hereinafter, the details of the drying step of the washing operation of the dishwasher 100 according to the fifth embodiment will be described with reference to FIG. Since the preparation step, the cleaning step, and the rinsing step are the same as those in the first embodiment, and the final rinsing step is the same as the second embodiment, the description thereof will be omitted. Further, since the treatments of steps S521 to S522 and S524 to S527 in the drying step are the same as those in the fourth embodiment, the description thereof will be omitted.

(Step S531)
The control device 50 determines whether or not the rinse has been charged into the washing tank 2. When the control device 50 determines that the rinse has been charged into the washing tank 2 (YES), the process proceeds to step S532. On the other hand, when the control device 50 determines that the rinse has not been put into the washing tank 2 (NO), the process proceeds to step S524. It should be noted that, for example, the control device 50 stores information on whether or not the rinse pump 82 is operated in the final rinsing step in the storage device 52, and determines whether or not the rinse has been charged into the washing tank 2. ..

(Step S532)
The control device 50 determines whether or not the user has received an instruction input with a time reduction in the drying process via the operation unit 21. Here, the user can input an instruction regarding whether or not to shorten the time of the drying process from the operation unit 21 after the power of the dishwasher 100 is turned on and before the washing operation is executed. When it is determined that the control device 50 has received the instruction input with the time reduction in the drying step (YES), the process proceeds to step S525. On the other hand, when it is determined that the control device 50 has not received the instruction input with the time reduction in the drying step (NO), the process proceeds to step S524.

As described above, in the dishwasher 100 according to the fifth embodiment, it is instructed whether or not the rinse is put into the washing tank 2 in the final rinsing step and whether the drying step is shortened before the washing step is executed. The drying time is changed depending on whether or not the input is accepted. That is, when the rinse is put into the washing tank 2 in the final rinsing step, and when the instruction input for shortening the time of the drying step is received before the washing step is executed, the rinse is put into the washing tank 2. The drying time is shorter than if it was not done. Here, when the rinse is put into the washing tank 2, it dries more easily than when the rinse is not put into the washing tank 2. Therefore, basically, when the rinse is put into the washing tank 2 in the final rinsing step, the entire inside of the tableware 3 and the washing tank 2 can be dried even if the drying time is shortened. However, there are some dishes that are difficult to dry depending on the type of tableware. Therefore, even when the rinse is put into the washing tank 2 in the final rinsing step, the user can dry the tableware 3 firmly without shortening the time of the drying step through the operation unit 21. It is possible to select whether or not to shorten the time of the drying process. By doing so, the tableware 3 can be dried firmly regardless of the type of tableware and the like.

The dishwasher 100 according to the fifth embodiment includes an operation unit 21 that receives an instruction input regarding whether or not the drying process time is shortened. Further, the control device 50 determines whether or not the rinse has been charged into the washing tank 2 in the final rinsing step. Then, when it is determined that the rinse has been charged into the cleaning tank 2, and when it is determined that the operation unit 21 has accepted the instruction input with the shortening of the drying process time, it is determined that the rinse has not been charged into the cleaning tank 2. The drying process time is shorter than when it is determined that the rinse has been put into the cleaning tank 2 and the instruction input for shortening the drying process time has not been received from the operation unit 21. It is something to do.

According to the dishwasher 100 according to the fifth embodiment, even when the rinse is put into the washing tank 2 in the final rinsing step, the operation unit 21 accepts an instruction input for shortening the drying step time. If not, the time of the drying process is not shortened. By doing so, the tableware 3 can be dried firmly regardless of the type of tableware and the like.

1 Washer body, 2 Wash tank, 3 Tableware, 4 Tableware basket, 5 Fixed rail, 6 Latch device, 7 Spring, 8 Wash pump, 9 Wash nozzle, 10 Water supply valve, 11 Drainage pump, 12 Inner lid, 13 doors , 14 Door open / close detection device, 15 Water temperature detection device, 16 Water level detection device, 17 Blower fan, 18 Water heater, 19 Float chamber, 20 Drying heater, 21 Operation unit, 40 Slide device, 50 Control device, 51 Rinse unit drive Circuit, 52 Storage device, 53 Water supply valve drive circuit, 54 Cleaning pump drive circuit, 55 Drainage pump drive circuit, 56 Blower fan drive circuit, 57 Water heater drive circuit, 58 Display drive circuit, 59 Slide device drive circuit, 60 Current Detection circuit, 61 Drying heater drive circuit, 63 Display, 80 Rinse unit, 81 Rinse tank, 82 Rinse pump, 83 1st input hose, 84 2nd input hose, 85 Replenishment port, 86 Pump holding member, 87 Remaining amount Detector, 88 floats, 100 dishwashers.

Claims (5)

A washing tank for storing tableware and
A blower fan that supplies air to the washing tank,
A drying heater that heats the air supplied to the washing tank, and
A rinse unit that puts a rinse into the washing tank and
In the washing operation for washing the tableware contained in the washing tank, a control device for sequentially executing the washing step, the rinsing step, the final rinsing step, and the drying step is provided.
The rinse unit is
A rinse tank that stores the rinse inside, and
A rinse pump that conveys the rinse stored in the rinse tank to the washing tank, and
A remaining amount detecting unit for detecting the remaining amount of the rinse stored in the rinse tank is provided.
The control device is
In the final rinsing step,
It is determined whether or not the rinse has been put into the washing tank, and it is determined.
When it is determined that the rinse has not been charged into the washing tank, the blower fan and the drying heater are driven to perform the drying step, and when it is determined that the rinse has been charged into the washing tank, the blower fan is used. A dishwasher that performs the drying process without driving the drying heater. The control device is
In the final rinsing step,
It is determined whether or not the rinse has been put into the washing tank, and it is determined.
The dishwasher according to claim 1 , wherein when it is determined that the rinse has been put into the washing tank, the time of the drying step is shortened as compared with the case where it is determined that the rinse has not been put into the washing tank. It is equipped with an operation unit that accepts instructions regarding whether or not the drying process is shortened.
The control device is
In the final rinsing step,
It is determined whether or not the rinse has been put into the washing tank, and it is determined.
When it is determined that the rinse has been put into the washing tank, and when it is determined that the rinse has not been put into the washing tank when the instruction input for shortening the time of the drying step has been received from the operation unit. Alternatively, the claim is to shorten the time of the drying step as compared with the case where it is determined that the rinse has been put into the washing tank and the instruction input for shortening the time of the drying step has not been received from the operation unit. The dishwasher according to 2 . The dishwasher according to any one of claims 1 to 3 , wherein the remaining amount detecting unit includes a float that moves in the vertical direction, and detects the remaining amount of the rinse based on the position of the float. The remaining amount detection unit includes a current detection circuit that detects the current flowing through the rinse pump.
The dishwasher according to any one of claims 1 to 3 , which detects the remaining amount of rinse based on the amount of change in the current value flowing through the rinse pump.

Images