JP4133780B2 - Dishwasher - Google Patents

Description

  The present invention relates to a dishwasher, and more particularly to a dishwasher that can automatically be rinsed.

In dishwashers, in addition to detergents for washing dishes, cleaning finishes are used to obtain a good luster for the washed dishes or to improve the drainage and speed up the drying of dishes. It is preferred to use a certain rinse. A dishwasher has been developed that includes an input device for automatically supplying detergent and rinse according to a pre-programmed process.
As for detergents, the dishwasher is started after putting the detergent into the dosing device once. The detergent inlet is opened at the appropriate timing during the washing process, and the detergent is put in once. The configuration to be adopted is adopted. As for rinsing, since the amount of rinsing used per time is very small, a rinsing tank capable of storing a plurality of times of rinsing is used. A configuration is adopted in which the rinse charging valve is actuated at an appropriate timing during the cleaning process to open the rinse charging port, and a single rinse is charged.

  As for the detergent, since it is configured to replenish the detergent for each time, it is rarely forgotten. Rinse, on the other hand, replenishes the rinse tank with multiple rinses at a time, so it tends to run the dishwasher without noticing that the remaining amount of rinse in the rinse tank is low .

The tableware washing machine of Patent Document 1 employs a technique of providing a counter that is incremented by 1 each time the cleaning process is completed, and notifying that it is time to supply rinse when the count value reaches a set value.
JP-A-6-327608

In the tableware washing machine of the above-mentioned patent document 1, it is informed that it is a replenishment time for rinsing when the rinsing remaining amount in the rinsing tank is washed by the number of times of washing that will be reduced to a predetermined amount.
It is preferable that the amount of rinse input per time is kept constant. If ideal, the amount of rinse used and the number of washes are proportional. However, in practice, it is difficult to keep the amount of rinse input per time constant. Originally, it is difficult to accurately control a minute amount of rinse input per one time. As the viscosity of the rinse gradually increases with the passage of time and the fluidity of the rinse changes, it is difficult to keep the amount of rinse input per time constant. Anxiety remains in the technique of estimating the amount of rinse use from the number of times of cleaning and informing the rinse supply timing.

  One object of the present invention is to provide a technique for correctly informing the rinse supply time. Another goal is to save the energy required to indicate when to replenish. Yet another object is to provide a technique that prevents the notification of the replenishment time from being overlooked. Another object of the present invention is to homogenize the amount of rinse input per time with a simple configuration.

The dishwasher of the present invention includes a rinse tank capable of storing a plurality of rinses, a rinse input port for supplying rinse from the rinse tank into the cleaning tank, a rinse input valve for opening and closing the rinse input port, and a rinse input valve a control unit for controlling the opening and closing of the means for detecting the rinse remaining amount of the rinsing tank, rinse remaining amount detected by the remaining amount detecting means comprises a display for displaying that a predetermined amount or less The control unit switches the opening time of the rinsing valve so that the rinsing valve opening time per time becomes longer when the detection means detects that the remaining amount of rinsing is equal to or less than a predetermined amount. It is executed only once after the rinse tank is put into the rinse tank until the remaining amount of rinse in the rinse tank becomes empty, and the display unit is synchronized with the timing when the control unit switches the opening time of the rinse-in valve. Te, rinse remaining amount display that has become less than a predetermined amount.
The dishwasher of the present invention comprises means for detecting the remaining amount of rinse in the rinse tank, and a display for displaying that the remaining amount detected by the remaining amount detecting means is below a predetermined amount. It is possible to directly detect and display that the remaining amount of rinse is low and it is time to replenish rinse. Compared with the technique of indirectly detecting the remaining amount of rinse from the number of times of washing, it is possible to accurately detect and display the time for replenishment.

When the rinsing remaining amount detecting means detects a rinsing remaining amount equal to or less than a predetermined amount, the control unit of the rinsing closing valve switches the opening time of the rinsing closing valve so that the opening time of the rinsing closing valve per time becomes longer. Is executed only once after the rinse is put into the rinse tank until the remaining amount of rinse in the rinse tank becomes empty. In synchronization with the timing when the control unit switches the opening time of the rinsing valve, the display unit displays that the remaining amount of rinsing has become a predetermined amount or less.
When the remaining amount of rinse in the tank decreases and the liquid level decreases, the amount of rinse that passes through the rinse inlet per unit time decreases. Even when the remaining amount of rinsing in the tank is reduced and the liquid level is lowered, if the opening time of the rinsing input valve per time is made constant, the amount of rinsing input per time decreases. In order to compensate for this so that the amount of rinse input per time does not decrease, it is necessary to lengthen the opening time of the rinse input valve per time.
When the rinse remaining amount detecting means detects a rinse remaining amount less than a predetermined amount, if the rinse injection valve control unit lengthens the opening time of the rinse injection valve per time, the decrease in the rinse input amount per unit time is compensated And the amount of rinse input per time is homogenized.

When the cleaning tank is a drawer type, provide an indicator lamp that lights up inside the cleaning tank, and that the indicator lamp lights up only when the remaining amount of rinse is below a predetermined amount and the cleaning tank is pulled out. Is preferred.
If the washing tank is a drawer type, the drawer is pulled out to accommodate the dishes. If the display lamp is lit at this time, it is immediately recognized that it is necessary to replenish the rinse. If the indicator lamp is provided inside the cleaning tank, it is only necessary to light it when the drawer is pulled out, and the lighting time can be shortened compared to the case where the indicator lamp is provided on the surface of the washing machine. Can be suppressed.

It is preferable to observe from the window provided in the cap that covers the replenishing port for replenishing the rinsing tank that the indicator lamp that informs the lack of the rinsing remaining amount is lit.
In this case, not only the remaining amount of the rinse but also the position where the rinse supply port exists can be displayed. The operator can easily know the position of the supply port and supply the rinse. A person who observes the lighting of the lamp can immediately understand the meaning of the lighting because the position is the rinse supply port.

The main features of the embodiments described below are listed first.
(Embodiment 1) The rinse tank is built in the door of the washing tank which closes the front opening of the dishwasher body, and the rinse supply port and the rinse inlet are formed on the inner surface of the door.
(Mode 2) A float and a float height sensor are disposed in the rinse tank, and the remaining amount of rinse is detected by detecting the liquid level height of the rinse.
(Mode 3) The LED is turned on only when the washing tank is drawn out and the remaining amount of rinse is not more than a predetermined amount.
(Mode 4) The LED is mounted on the outer surface of a transparent or translucent rinse tank. A transparent light guide column is incorporated in the lid of the rinse supply port. When the LED is lit, the operator can visually recognize the lighting of the LED through the wall of the rinse tank and the light guide column.

FIG. 1 shows a schematic cross-sectional view of the dishwasher of this embodiment. In this figure, the parts that the dishwasher normally has are omitted as appropriate.
The dishwasher 2 has an outer frame constituted by the washing machine body 10. A cleaning tank 12 is accommodated in the cleaning machine body 10. A door 34 is attached to the front side (left side in FIG. 1) of the cleaning tank 12. An operation panel 28 is provided on the upper portion of the door 34. The operation panel 28 is provided with various operation switches such as a power switch, a start / pause switch, a course (such as “standard course” and “careful course”) selection switch, and a notification lamp. It is connected to the. The control unit 32 controls the operation of each part of the dishwasher 2.

An opening 12 a in the middle of the back surface of the cleaning tank 12 is connected to one end of the water supply pipe 11. A water supply valve 84 is provided in the middle of the water supply pipe 11, and water is supplied from the other end 11 a of the water supply pipe 11.
An opening 49 is formed at the bottom of the cleaning tank 12. A water reservoir 52 is provided below the opening 49.
One end of a washing water circulation pipe 54 and a drain pipe 56 is connected to the water reservoir 52. The washing water circulation pipe 54 is a pipe through which washing water circulates, and a washing pump 59 is provided in the middle thereof. The other end 54 a of the cleaning water circulation pipe 54 reaches the inside of the cleaning tank 12. The other end 54 a of the cleaning water circulation pipe 54 is connected to the rotating nozzle 58.
A drainage pump 76 is provided in the middle of the drainage pipe 56. The water is drained from the other end 56 a of the drain pipe 56 to the outside of the cleaning machine body 10.
The lower opening 12 b on the back surface of the cleaning tank 12 is connected to one end of the air passage 44. The other end of the air passage 44 communicates with the drying fan 46. When the drying fan 46 rotates, air outside the cleaning tank 12 is introduced into the cleaning tank 12 through the air passage 44. A heater 42 is disposed in the vicinity of the opening 12 b of the cleaning tank 12. The air introduced into the cleaning tank 12 is warmed by the heater 42.

A rinsing device 60 is built in the door 34. FIG. 2 is a view of the rinsing device 60 incorporated in the door 34 as seen from the inside of the door 34. About the member arrange | positioned inside the door 34, it has shown typically with the broken line. Hereinafter, the inside of the door 34 is defined as the front side of the rinse charging device 60, and the outside of the door 34 is defined as the rear side of the rinse charging device 60. The substrate 62 on the front surface of the rinse-in device 60 has a substantially rectangular shape, and is fitted into the opening 34a on the inner surface of the door 34 from behind via a packing (not shown) and screwed from the front. A protrusion 62 a that protrudes forward toward the upper part is formed on the upper right side of the substrate 62. A rinse supply port 64 is formed on the upper surface of the protrusion 62a. The rinse supply lid 65 is detachable from the rinse supply port 64 and is fixed by twisting and loosened by twisting in the opposite direction. The rinse replenishing port lid 65 has a substantially disk shape, and a transparent light guide column body 66 made of a resin is incorporated in the shaft portion.
A rinse inlet 67 is provided at the bottom of the substrate 62. The rinse inlet 67 has a horizontally long rectangular shape.

A rinse tank main body 68, a link member 70, and a drive member 72 are disposed on the rear side of the substrate 62. The rinse tank main body 68 is made of a transparent or translucent resin, and the side fixed to the back surface of the substrate 62 is open. By fixing the rinse tank body 68 to the back surface of the substrate 62, a sealed space is formed together with the substrate 62. The rinse tank main body 68 has an inverted L shape extending from the right side to the left side in FIG.
3 is a longitudinal sectional view taken along line III-III in FIG. As shown in FIG. 3, an LED seat 68a protrudes rearward from the upper rear surface of the rinse tank main body 68. As shown in FIG. The LED 74 is mounted on the LED seat 68a. A bottom boss 68b projects downward from the bottom of the rinse tank body 68, and a hole 68c is formed inside the bottom boss 68b.
A cylindrical sensor holder 75 is inserted inside the bottom boss 68 b, and a non-contact sensor (proximity switch) 71 is inserted inside the sensor holder 75. A rod 75 b for guiding the vertical movement of the float 77 is fixed to the upper surface of the cylindrical sensor holder 75. A ring-shaped float 77 is provided around the guide rod 75b. A magnet 77 a is fixed to the inner surface of the float 77. The magnet 77a floats and sinks according to the level of the rinse liquid surface. In the vicinity of the upper end of the guide rod 75b, a stopper 75c that prohibits the float 77 from being raised further and coming out of the guide rod 75b is fixed. The bottom boss 68b and the sensor holder 75 are welded to ensure liquid tightness.
The capacity of the rinse tank main body 68 of this embodiment is 90 g. When the rinsing remaining amount is 30 g or more, the float 77 is raised, the distance from the non-contact sensor (proximity switch) 71 to the magnet 77a is far, and the non-contact sensor 71 is turned off. When the remaining amount of rinsing decreases to 30 g or less, the float 77 descends, the distance from the non-contact sensor 71 to the magnet 77a is close, and the non-contact sensor 71 is turned on.
When the rinse liquid level falls below a predetermined level, the non-contact sensor 71 is turned on. The signal is sent to the control unit 32, and the control unit 32 turns on the LED 74 when the washing tank 12 is pulled out from the washing machine body 10 and the non-contact sensor 71 is on.
As described above, the rinse tank main body 68 is transparent or translucent, and the transparent light guide column 66 is incorporated in the rinse supply port lid 65. For this reason, the lighting of the LED 74 is visually recognized by the operator through the wall of the rinse tank main body 68 and the light guide column body 66. When the door 34 is tightened, the LED 74 is turned off.

  As shown in FIG. 2, a rinse injection valve 69 is disposed at the L-shaped end of the lower left portion of the rinse tank main body 68. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 shows a state in which the rinse charging valve 69 is opened. As shown in FIGS. 4 and 5, the rinse-in valve 69 includes a valve seat 69a, a valve body 69b, a valve body biasing spring 69c, and a pressing member 69d. The valve seat 69 a is fixed to the rinse tank main body 68. The valve body 69b includes a seal portion 69e and a shaft portion 69f. The seal portion 69e is made of rubber and has a diaphragm-like substantially disk shape. The shaft portion 69f is made of resin and has a rectangular plate shape that is long in the left-right direction in the drawing. The seal portion 69e is fixed to the right end portion of the shaft portion 69f. A notched hook 69g is formed on the left end of the shaft portion 69f. The valve body biasing spring 69c is mounted on the shaft portion 69f. The holding member 69d is made of resin and has a bottomed cylindrical shape that opens to the right. The holding member 69d is fixed to the valve seat 69a. In a space defined by the pressing member 69d and the valve seat 69a, a valve body 69b around which a valve body biasing spring 69c is mounted is accommodated. A shaft through hole 69h is formed in the left bottom wall of the pressing member 69d. The hook 69g of the shaft portion 69f protrudes to the outside (left side in the figure) from the shaft through hole 69h. The valve body urging spring 69c is compressed between the seal portion 69e and the pressing member 69d. In other words, the valve body urging spring 69c urges the seal portion 69e in the direction of the valve seat 69a.

As shown in FIG. 2, the drive member 72 includes a protrusion 72a and a nail 72b. The protrusion 72a is pulled rightward in the figure by the electromagnetic force of the solenoid. The protrusion 72a is provided with a spring (not shown) and is biased leftward in the drawing by the spring.
The link member 70 is made of resin and is a plate member that is long in the vertical direction. The link member 70 includes a first arm part 70a and a second arm part 70b. The first arm portion 70a and the second arm portion 70b swing around an axis 70c that extends horizontally in the front-rear direction. A rib 70a1 extending forward is formed at the lower portion of the first arm portion 70a. An engaging portion 70b1 is formed on the upper rear side of the second arm portion 70b. The nail part 72 b of the driving member 72 is engaged with the engaging part 70 b 1 of the second arm part 70 b of the link member 70. On the other hand, the rib 70 a 1 of the first arm portion 70 a of the link member 70 is engaged with the hook 69 g of the rinse charging valve 69.

The opening / closing operation of the rinse charging valve 69 will be described with reference to FIGS. 2, 4, and 5. When the drive member 72 shown in FIG. 2 is energized, the protrusion 72a and the nail 72b are pulled in the right direction in the figure. The nail portion 72b is engaged with the engaging portion 70b1 of the second arm portion 70b of the link member 70. As the nail portion 72b moves rightward in FIG. It swings clockwise around 70c. When the second arm portion 70b swings, the first arm portion 70a also swings integrally, so that the first arm portion 70a also swings clockwise about the shaft portion 70c. The rib 70a1 of the first arm portion 70a is engaged with the hook 69g of the rinse-in valve 69 shown in FIG. 4, and as the first arm portion 70a swings clockwise, the hook 69g, that is, the valve body 69b. Is pulled to the left in the figure. For this reason, as shown in FIG. 5, the seal portion 69e is separated from the valve seat 69a against the urging force of the valve body urging spring 69c. The rinse stored in the rinse tank main body 68 is thrown into the cleaning tank 12 through the rinse inlet 67 as shown by an arrow in the figure through a gap between the seal portion 69e and the valve seat 69a that can be formed at this time. The
When the energization to the driving member 72 is interrupted, the projecting portion 72a and the nail portion 72b are restored in the left direction in the figure by the urging force of the spring mounted on the projecting portion 72a. Accordingly, the second arm 70b and the first arm 70a return to their original positions (positions shown in FIG. 2). Then, the valve body 69b moves to the right in the figure by the biasing force of the valve body biasing spring 69c, and the seal portion 69e is seated on the valve seat 69a as shown in FIG. This completes the rinsing process.

FIG. 6 is a graph showing the relationship between the total amount of rinse outflow and the time required to feed a fixed amount (0.5 g) of rinse. As shown in FIG. 6, the time required to supply a certain amount of rinse as the remaining amount gradually decreases from when a large amount of rinse is stored in the rinse tank main body 68. Becomes longer. This is due to a change in water pressure in the rinse tank body 68. When the remaining amount of rinse in the rinse tank main body 68 decreases and the liquid level decreases, the amount of rinse that passes through the rinse inlet 67 per unit time decreases. Even if the remaining amount of rinse in the rinse tank main body 68 is reduced and the liquid level is lowered, if the opening time of the rinse injection valve per time is made constant, the amount of rinse input per time will decrease. .
In the dishwasher 2 of the present embodiment, the float 77 detects when the remaining amount of rinse reaches 30 g. When it is detected that the rinse is 30 g or less, the float switch is turned on in the control unit 32. When the float switch is turned on, the LED 74 is lit as described above. In addition to this, the energization time to the drive member 72 is doubled. That is, while the float switch is off, the energization time to the drive member 72 is 0.2 seconds, whereas when the float switch is on, the energization time to the drive member 72 is 0.4 seconds. By controlling the energization time to the drive member 72 in this way, the time during which the seal portion 69e is separated from the valve seat 69a is controlled, that is, the opening time of the rinse injection valve 69 is controlled. Become. As a result, even when the remaining amount of rinse is reduced and the liquid level is lowered, a decrease in the amount of rinse input per unit time is compensated, and the amount of rinse input per time is homogenized.

FIG. 7 is a flowchart showing the operation of the dishwasher 2 of this embodiment.
First, before operating the operation panel 28 of FIG. 1, the operator pulls the cleaning tank 12 together with the door 34 and arranges the dishes 16 in the tableware basket 14. Next, an appropriate amount of detergent for the dishwasher is added. At this time, if the light guide column body 66 incorporated in the above-described rinse supply opening lid 65 is turned on, the operator opens the rinse supply opening lid 65 and replenishes the rinse. The washing tank 12 is pushed back into the washing machine main body 10 together with the door 34, and the operation panel 28 is operated to start operation.
At the start of operation, the water is drained in step S10. Proceeding to step S12, water is supplied and pre-washing is performed. After a predetermined time has elapsed, the water is drained and pre-washing is finished.
Proceeding to step S14, water cleaning is performed and heat cleaning (main cleaning) is performed. After a predetermined time has elapsed, the water is drained and the heat cleaning is completed.
Proceeding to step S16, water is supplied and non-heated rinsing is performed, and the water is drained after a predetermined time. After this is repeated three times, it is drained and the non-heated rinse is completed.

Proceeding to step S18, water is supplied and rinsing is performed. When the temperature rises to a predetermined temperature (YES in step S20), the process proceeds to step S22 and the drainage pump 76 is temporarily stopped prior to the rinsing. This is because if the rinse charging valve 69 is opened without stopping the drain pump 76, the cleaning water in the cleaning tank 12 flows back into the rinse tank main body 68 from the rinse charging port 67. In step S24, it is determined whether or not the above-described float switch is OFF. When the float switch is off (YES in step S24), it is considered that the remaining amount of rinsing is 30 g or more, the process proceeds to step S26, and the drive member 72 is energized for 0.2 seconds. On the other hand, when the float switch is on (NO in step S24), it is considered that the remaining amount of rinse is less than 30 g, the process proceeds to step S28, and the drive member 72 is energized for 0.4 seconds. At the same time, the LED 74 is turned on. When the drive member 72 is energized, the rinse charging valve 69 is opened, and the rinse flows from the rinse charging port 67 (step S30). After a predetermined time (0.2 seconds or 0.4 seconds) has elapsed, the rinsing valve 69 is closed by the urging force of the valve body urging spring 69c, and the rinsing operation is completed. When the process proceeds to step S32 and the cleaning pump 59 is driven again, the heating rinse is resumed by the hot water mixed with the rinse. After a predetermined time has elapsed, the water is drained and the heating rinse is completed.
In step S 34, the drying fan 46 is driven and air is taken into the cleaning tank 12. This air is heated by the heater 42 to be heated and blown to the tableware 16 in the cleaning tank 12. After a predetermined time has elapsed, the drying fan 46 is stopped and the drying operation ends. Proceeding to step S36, the buzzer notifies that all the driving operations have been completed, and the dishwasher 2 of this embodiment automatically stops.

In the dishwasher 2 of the present embodiment, a float 77 is disposed in the rinse tank main body 68, and the water level of the rinse liquid level is monitored. Then, when the remaining rinse amount is equal to or less than the predetermined amount (30 g), the LED 74 is turned on. The LED 74 functions as an empty lamp, and the operator can visually recognize the lighting of the LED 74 through the light guide column body 66 incorporated in the rinse supply port lid 65 and immediately recognize that it is necessary to replenish the rinse. Since the LED 74 and the light guide column 66 are provided inside the washing tub 12, they need only be turned on when the drawer is pulled out, and the lighting time is shortened compared with the case where a display lamp is provided on the surface of the dishwasher. Power consumption can be suppressed.
In addition, since the lighting of the LED 74 can be observed through the light guide column body 66 incorporated in the rinse replenishment lid 65 of the rinse tank main body 68, not only the remaining amount of the rinse but also the position where the rinse replenishment lid 65 is present is also incidentally observed. Can be displayed. The operator can easily know the position of the rinse supply palate 65 and supply the rinse. Moreover, since the person who observed lighting of a lamp | ramp is the rinse supply mouth cover 65, it can understand the meaning of lighting immediately.
Further, when the remaining amount of rinse in the rinse tank body 68 decreases and the liquid level decreases, the amount of rinse that passes through the rinse inlet 67 per unit time decreases. Even when the remaining amount of rinse in the rinse tank main body 68 is reduced and the liquid level is lowered, if the opening time of the rinse injection valve 69 per time is made constant, the amount of rinse input per time decreases. End up. However, in this embodiment, when the remaining amount of rinse in the rinse tank main body 68 becomes a predetermined amount (30 g) or less, the opening time of the rinse charging valve 69 is lengthened (doubled). As a result, even when the remaining amount of rinse is reduced and the liquid level is lowered, a decrease in the amount of rinse input per unit time is compensated, and the amount of rinse input per time is homogenized.

Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.
In addition, the technical elements described in the present specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

The schematic sectional drawing of the dishwasher of a present Example. The figure which looked at the rinse injection device from the inside of the door. FIG. 3 is a longitudinal sectional view taken along line III-III in FIG. 2. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2 (rinse charging valve closed). FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 2 (rinse injection valve opened). The graph which shows the relationship between the accumulation outflow amount of rinse, and the time required to throw in a fixed amount of rinse. The flowchart which shows operation | movement of the dishwasher of a present Example.

Explanation of symbols

2: Dishwasher 10: Washing machine body 12: Washing tank 34: Door 60: Rinse feeding device 62: Substrate 64: Rinse feeding port 65: Rinse feeding port lid 66: Light guide column 67: Rinse feeding port 68: Rinse tank body 69: Rinse injection valve, 69a: Valve seat, 69b: Valve body, 69c: Valve body biasing spring, 69d: Presser member, 69e: Seal portion, 69f: Shaft portion, 69g: Hook, 69h: Shaft through hole 70: Link member, 70a: first arm portion, 70a1: rib, 70b: second arm portion, 70b1: engagement portion, 70c: shaft 71: non-contact type sensor 72: drive member, projection portion 72a, nail portion 72b
74: LED
75: Sensor holder, 75a :, 75b: Rod, 75c: Stopper 77: Float

Claims (3)

A rinse tank capable of storing multiple rinses;
A rinse inlet for feeding rinse from the rinse tank into the washing tank;
A rinse valve that opens and closes the rinse inlet;
A control unit for controlling the opening and closing of the rinse charging valve;
Means for detecting the remaining amount of rinse in the rinse tank;
A display for indicating that the remaining amount of rinse detected by the detection means has become a predetermined amount or less ,
The control unit performs control to switch the opening time of the rinse-in valve so that the opening time of the rinse-in valve per time becomes longer when the detection unit detects that the remaining amount of rinse is equal to or less than a predetermined amount. , It is executed only once after the rinse is put in the rinse tank until the remaining amount of rinse in the rinse tank becomes empty,
The display device displays that the remaining amount of rinsing has become a predetermined amount or less in synchronization with the timing when the control unit switches the opening time of the rinsing input valve.   The washing tank is a drawer type, and the indicator is provided with an indicator lamp that is lit inside the washing tank, and the indicator lamp is lit only when the remaining amount of rinse is less than a predetermined amount and the washing tank is drawn out. The dishwasher according to claim 1.   3. The dishwasher according to claim 2, wherein the lighting of the indicator lamp is observed from a window provided in a cap that covers a replenishing port for replenishing the rinse tank.

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