JP7236609B2 - dishwasher - Google Patents

Description

The present invention relates to a dishwasher having an overflow detector.

2. Description of the Related Art Conventionally, when washing water is circulated in a dishwasher, washing water is supplied up to a certain water level in a water supply tank provided at the bottom, for example. At this time, when the water level sensor detects that the cleaning water has been supplied to a certain water level, the supply of cleaning water to the cleaning tank is stopped. However, when supplying cleansing water, the water level sensor may make an erroneous detection due to bubbling caused by an incorrect amount of detergent added. In this case, even if the wash water reaches a certain water level, the water level sensor does not function (detect), so water supply continues. Therefore, the water level of the wash water continues to rise, and the water supply tank provided at the bottom may overflow with the wash water. In this case, normally, a retry operation is performed to once drain the washing water in the washing tank and supply the water again. This resolves the flood condition and restores the dishwasher to normal operation.

Also known is a dishwasher provided with a water pan that receives water leaking due to deterioration of a door seal member and a water detection unit that detects water accumulated in the water pan (see, for example, Patent Document 1).

However, the dishwasher described in Patent Literature 1 cannot distinguish whether the generated overflow is temporary or due to malfunction. Therefore, even in the case of temporary flooding, the user cannot confirm that the flooding is temporary. As a result, there is a possibility that an abnormal state such as flooding due to failure cannot be determined and reset cannot be performed.

Japanese Patent Application Laid-Open No. 2001-204673

The present invention provides a retryable dishwasher in the event of temporary flooding.

A dishwasher according to the present invention includes a washing tank having an opening for storing dishes, and a door arranged to open and close the opening of the washing tank. The door has a sealing portion capable of sealing the peripheral edges of the upper and lower portions and both side portions in a closed state. The seal portion has a seal release portion on at least a part of the side portion or the bottom portion thereof to raise the water level from the bottom surface of the washing tank and allow the overflowing water to escape. In addition, the cleaning tank is provided outside the seal part at the bottom of the door, and is arranged at a position lower than the height of the overflow opening, where the overflow water that has passed through the seal missing part flows, and outside the seal part at the bottom of the door. It is provided with a flood detection unit that detects the flood condition before the flood water flows into the overflow port .

According to the dishwasher of the present invention, the seal portion has a seal release portion through which the overflowing water can escape by raising the water level from the bottom surface of the washing tank. Furthermore, an overflow detection section is provided outside the seal section at a position lower than the height of the overflow port to detect the overflow state. As a result, it is possible to detect the overflowing state before the overflowing water flows into the overflow port, drain the washing water, and retry supplying the washing water after the drainage.

FIG. 1 is a schematic perspective view of the interior of a washing tank viewed obliquely from above the dishwasher according to the embodiment. FIG. 2 is a schematic plan view showing the bottom surface of the washing tub of the same dishwasher and the overflow detector provided at the bottom of the door. FIG. 3 is a schematic cross-sectional view of the same dishwasher viewed from the side along a vertical cross section in the front-rear direction. 4 is a perspective view showing a partial vertical section of the front left side of the dishwasher of FIG. 1; FIG. FIG. 5 is a block diagram showing the configuration of the same dishwasher.

Hereinafter, a dishwasher according to an embodiment will be described with reference to the accompanying drawings. In addition, the same code|symbol is attached|subjected about the substantially same member in drawing.

(Embodiment)
A dishwasher 10 according to the present embodiment will be described below with reference to FIGS. 1 to 4. FIG.

FIG. 1 is a schematic perspective view of the interior of a washing tub 2 viewed obliquely from above a dishwasher 10 according to the present embodiment. FIG. 2 is a schematic plan view showing the bottom surface of the washing tub 2 of the dishwasher 10 and the overflow detector provided at the bottom of the door 6 (see FIG. 3). FIG. 3 is a schematic cross-sectional view of the front-back direction vertical cross-section of the dishwasher 10 viewed from the side. 4 is a perspective view showing a partial vertical section of the front left side of the dishwasher of FIG. 1; FIG. In the drawing, for convenience, the front of the dishwasher 10 is shown as the X direction from left to right, the depth direction as the Y direction, and the vertically upward direction as the Z direction. 1, the front door (the door 6 shown in FIG. 3) is omitted to show the internal structure.

A dishwasher 10 according to the present embodiment includes at least a main body 1, a washing tank 2 housed in the main body 1, a door 6, and the like, as shown in FIGS. The washing tank 2 has, for example, an opening 2a on the front side, and stores objects to be washed such as tableware. The door 6 is provided so that the opening 2a of the cleaning tank 2 can be opened and closed.

The door 6 has a seal portion 11 that seals the upper, lower, and side edges of the opening 2a in the closed state. The seal portion 11 has a seal missing portion 12 provided on at least a part of the side portion or the bottom portion. At the seal missing portion 12, the water level is raised from the bottom surface of the cleaning tank 2 during water supply such as cleaning, and the overflowing water from the cleaning tank 2 flows to the overflow receiver 13 described later.

The washing tank 2 also has an overflow port 14 protruding from the bottom surface of an overflow receiver 13 arranged outside the seal portion 11 of the lower portion 6 a of the door 6 . The overflow port 14 raises the water level from the bottom surface in the washing tank 2 and overflows, and the overflowing water flowing through the seal missing part 12 flows into it. Further, the washing tank 2 is provided with an overflow detecting portion 16 provided on the bottom surface of the overflow receiver 13 arranged outside the sealing portion 11 at the lower portion 6 a of the door 6 . The overflow detection unit 16 is arranged at a position lower than the height of the protruding overflow port 14, and detects the overflow state.

In other words, the overflow detection section 16 is provided outside (-Y direction) of the seal section 11 of the door 6 . Therefore, since the overflow detecting section 16 is not exposed in the cleaning tank 2 during normal use, it is not exposed to cleaning water. As a result, erroneous operations such as erroneous detection of the overflow detection unit 16 during normal use can be suppressed. Also, the overflow detector 16 is arranged at a position lower than the overflow port 14 . As a result, the overflow state can be detected by the overflow detector 16 before the overflow flows into the overflow port 14. - 特許庁Therefore, even in a pattern in which the water level is slightly higher than that during normal washing, the overflow detection unit 16 can quickly detect the overflow. As a result, it is possible to drain the wash water based on the overflow detection information of the overflow detection unit 16, and then retry supplying the wash water again. That is, before the water overflowing from the cleaning tank 2 flows into the overflow port 14, water supply can be retryed quickly.

Each member constituting the dishwasher 10 will be described below with reference to FIGS. 1 to 4 .

<Body>
The main body 1 constitutes the outer shell of the dishwasher 10 and houses the washing tank 2 inside. Note that the main body 1 may be housed in a built-in type, for example, under a kitchen countertop. Further, the main body 1 may constitute a main body of a dishwasher that is independently placed on a kitchen or the like.

<Washing tank>
The cleaning tank 2 has an opening 2a on the front side (-Y direction) of the main body 1, for example. The washing tank 2 is provided therein with tableware trays 4a and 4b for storing objects to be washed such as tableware. In addition, the washing tank 2 may have a structure in which a tableware tray for storing objects to be washed, such as tableware, is arranged from the upper side so as to have an opening in the upper portion.

The washing tank 2 also includes, for example, a water level detection unit (not shown) mounted at the bottom.

That is, the cleaning tank 2 is supplied with cleaning water from an external faucet (not shown) via a water supply hose (not shown) and a water supply valve 27 (see FIG. 5). The water level detection unit detects the water level of the wash water to be supplied, and when the water level reaches an appropriate level for washing, the water supply valve is closed to stop the supply of water from the external faucet. A water supply pump may be substituted for the water supply valve.

At this time, the water level of the supplied wash water during normal washing is set at least at a position lower than the seal portion 11 of the lower portion 6 a of the door 6 .

The water level detection unit may be configured by a switch for detecting the pressure of supplied wash water, for example. Also, the water level detection unit may be configured with other configurations such as, for example, a float type.

<door>
The door 6 is provided so that the opening 2a of the cleaning tank 2 can be opened and closed. The door 6 is provided on the front side when the opening 2a of the cleaning tank 2 is on the front side, and is provided on the upper side when the opening 2a is on the upper side. In addition, the door 6 may be configured by combining one sheet or two or more sheets.

As for how to open the door, when opening toward the front side (-Y direction), the opening position of the door 6 is located at the front upper part even if the door 6 is opened so that the opening position of the door 6 is located at the lower front side. It may be configured to open the door 6 so as to do. Further, when the door 6 opens to the left (−X direction) or right (X direction), the opening position of the door 6 may be the left or right position. Further, in the case of two or more doors 6, each door 6 may be opened symmetrically, that is, a so-called double door opening, or each door 6 may be opened in the same direction.

<Seal part>
The seal portion 11 is provided on the rear surface side (Y direction) of the door 6 . The seal portion 11 seals the upper, lower, and both side edges of the door 6 when the door 6 is closed.

Further, as shown in FIG. 4, the seal portion 11 has a seal missing portion 12 formed in the seal portion 11 on the side, for example. In Embodiment 1, an example will be described in which, as the seal-loosening portion 12, a first seal-loosening portion 12a and a second seal-loosening portion 12b are formed on the left and right sides of the side seal portion 11. FIG. In addition, when not distinguishing the 1st seal missing part 12a and the 2nd seal missing part 12b, it only describes as the seal missing part 12. As shown in FIG.

The seal-loose part 12 allows the overflowing water from the bottom surface 7 of the cleaning tank 2 to rise above the water level specified during normal cleaning for some reason, and flows it to the outside of the seal part 11.例文帳に追加That is, the overflow water is discharged outside the cleaning tank 2 .

It should be noted that the seal missing portion 12 is not limited to being provided in the side seal portion 11 as shown in FIG. For example, the seal missing portion 12 may be provided in at least a portion of the lower seal portion 11 .

Then, the overflow water 15 indicated by the white arrows in FIG. 4 passes through the first seal missing portion 12a and the second seal missing portion 12b formed on the left and right sides of the seal portion 11, and flows into the overflow receiver shown in FIG. 13 , for example, toward the center of the front side of the cleaning tank 2 . It is desirable that the seal missing portion 12 formed in the seal portion 11 be provided at a position equal to or lower than the lower portion 6a of the door 6 shown in FIG.

Moreover, as shown in FIG. 2 , the overflow water 15 indicated by the white arrows that has passed through the first seal missing portion 12 a and the second seal missing portion 12 b flows between the seal portion 11 and the overflow receiver 13 . At this time, the overflow flows toward the center of the cleaning tank 2, for example, through the overflow receiver 13 which is lower (-Z direction) than the opening positions of the first overflow port 14a and the second overflow port 14b that constitute the overflow port 14. .

Then, the water flowing through the overflow receiver 13 reaches between the pair of electrodes 16 a and 16 b that constitute the overflow detecting section 16 . At this time, as will be described later, the overflow detector 16 is arranged at a position lower than the opening of the overflow port 14 . That is, the opening of the overflow port 14 is provided at a position protruding in the Z direction at a certain height from the lower portion 6a of the door 6. As shown in FIG.

Therefore, when the water level of the overflow water 15 flowing through the overflow receiver 13 is relatively low, the overflow water 15 does not flow into the overflow port 14, but flows between the seal portion 11 and the overflow receiver 13 and further toward the center of the cleaning tank 2, for example. It flows and reaches between the pair of electrodes 16 a and 16 b of the overflow detecting section 16 .

Also, by providing the sealing portion 11 with the seal missing portion 12, it is possible to avoid a state in which the overflowing water 15 fills the inside of the washing tank 2 and overflows from the exhaust port 9 in the upper portion of the main body 1 shown in FIG.

Furthermore, as will be described later, the overflow 15 that escapes from the seal missing portion 12 is detected by the overflow detection unit 16 at a relatively low water level. Therefore, it is possible to retry (repeatedly) at an early stage in order to determine whether the flood is temporary or due to a failure. Here, "retry" refers to a step of supplying water again after draining the washing water and checking whether or not overflow occurs. Note that the number of retries is not limited to one, and may be performed multiple times.

In addition, the overflow water that escapes from the seal missing portion 12 flows through the overflow receiver 13 as described above. At this time, for example, if the overflow detector 16 fails to detect the overflow, the overflow further accumulates in the overflow receiver 13 and the water level rises. In this case, when the overflow increases beyond the height of the opening of the overflow port 14 , the overflow flows into the overflow port 14 through the opening of the overflow port 14 and is led to the overflow receiving pan 24 via the introduction passage 17 . As a result, the overflow of the water 15 from the exhaust port 9 at the top of the main body 1 can be prevented more reliably.

<Tableware tray>
The tableware tray 4a and the tableware tray 4b accommodate objects 8 to be washed such as tableware, as shown in FIG. The dish trays 4a and 4b are arranged so that they can be taken in and out from the front side of the washing tank 2 along a pair of rails 3a and a pair of rails 3b provided on both sides of the inner surface of the washing tank 2 shown in FIG. be. In the example shown in FIG. 1, a rail 3a is provided on the upper side, a rail 3b is provided on the lower side, and tableware trays 4a and 4b can be arranged in two upper and lower layers.

<Water supply valve (water supply unit)>
A water supply valve constituting a water supply unit supplies washing water for washing objects to be washed such as tableware to the washing tank 2 when opened.

Specifically, washing water is supplied to the washing tank 2 from, for example, an external faucet (not shown) via a water supply hose (not shown) and a water supply valve 27 (see FIG. 5). The supplied washing water is supplied to a water level set at a position lower than the seal portion 11 at the bottom of the door 6 and is stored in the bottom portion of the washing tank 2 . At this time, the water level of the supplied cleaning water is controlled by, for example, a water level detector.

<Washing nozzle (washing part)>
The cleaning nozzle 5, which is a cleaning section, is composed of, for example, three cleaning nozzles 5a, 5b and 5c. Each of the cleaning nozzles 5a, 5b, 5c is arranged at different positions or different heights in the cleaning tank 2, for example. The washing nozzles 5a, 5b, and 5c spray washing water onto the objects 8 to be washed, such as tableware stored in the tableware tray 4a and the tableware tray 4b, to wash the objects 8 to be washed.

The washing nozzles 5a, 5b, and 5c are not limited to the arrangement described above, and may be arranged at appropriate positions within the washing tank 2 according to the structure and shape of the washing tank 2, the shape and arrangement of the tableware tray, and the like. is desirable.

Further, a heater may be provided in the vicinity of the lower part of the cleaning tank 2 to heat the cleaning water to produce hot water, and the hot water may be supplied to the respective cleaning nozzles 5a, 5b, and 5c. This further improves the cleaning efficiency.

<Washing pump (washing part)>
As shown in FIG. 3, the cleaning pump 23, which is a cleaning unit, is arranged on the outer side of the bottom surface 7 of the cleaning tank 2 and sucks the cleaning water accumulated in the cleaning tank 2. As shown in FIG. Then, the sucked washing water is supplied to the washing nozzles 5a, 5b, and 5c, which are the washing nozzles 5, to wash the object to be washed. Further, the washing water that has been washed and dropped onto the bottom surface 7 of the washing tank 2 is sucked again, and the above operation is repeated to circulate the washing water.

<Drainage pump (drainage section)>
A drainage pump 22, which is a drainage unit, discharges the cleaning water accumulated on the bottom surface 7 of the cleaning tank 2 after cleaning the object to be cleaned to the outside of the machine through a drainage port 20 or the like through a drainage hose or the like. At this time, it is desirable to have a configuration in which a residue filter 21 is provided at the drain port 20 . The residue filter 21 collects residue contained in the washing water. As a result, it is possible to prevent problems such as clogging of the circulation path and the drainage path due to debris.

<Outlet>
The overflow port 14 is arranged outside the sealing portion 11 of the lower portion 6a of the door 6 (-Y direction). The overflow port 14 is provided so that the supplied washing water raises the water level from the bottom surface 7 in the washing tank 2 and overflows, and the overflow water flowing through the overflow receiver 13 flows from the seal missing portion 12.例文帳に追加The overflow port 14 has an opening at a position higher than the lower end of the seal portion 11 of the lower portion 6a of the door 6 and higher than the bottom surface of the overflow receiver 13 in the Z direction. The overflow port 14 directs the overflow to the overflow pan 24 via the lead-in channel 17 before it overflows the overflow pan 13 .

At this time, the overflow detector 26 may be provided in the overflow pan 24 . The overflow detector 26 detects that there is water in the overflow pan 24 . It should be noted that the overflow detection unit 26 only needs to be able to detect that the water in the overflow pan 24 is at a predetermined water level. Therefore, the overflow detection unit 26 may be configured as a float type, for example. As a result, it is possible to detect the overflow from the overflow port 14, that is, the true overflow. At this time, the user may be notified of the overflow from the overflow port 14 by sound or display.

The above-mentioned true overflow means that, for example, when the bottom of the cleaning tank 2 is damaged, the water leaks from the bottom of the cleaning tank 2 to the overflow pan 24 without reaching the overflow detector 16. This means a state in which the overflow detection unit 26 has no choice but to detect water.

<Flood detection part>
As shown in FIG. 2, the overflow detection unit 16 is composed of, for example, a pair of electrodes 16a and 16b. As shown in FIG. 3, the overflow detection unit 16 is disposed outside the sealing portion 11 of the lower portion 6a of the door 6 (-Y direction) and at a position lower than the height of the opening of the overflow port . The overflow detection unit 16 detects the state of overflowing water flowing through the overflow receiver 13 .

Specifically, the flooding detection unit 16 detects the flooding state based on a change in electrical characteristics, such as a change in electrical resistance, between the pair of electrodes 16a and 16b. Therefore, it is desirable to make the space between the pair of electrodes 16a and 16b water-repellent, for example. As a result, when the water level of the overflow in the overflow receiver 13 is lowered, the water is less likely to remain between the pair of electrodes 16a and 16b and drains more quickly. Therefore, it can be quickly determined whether or not the flooding state has been cancelled.

If a water level sensor for detecting the water level of the overflow is provided inside (in the Y direction) of the seal portion 11, the water level sensor may erroneously detect the water level of the overflow. In other words, during normal use, the washing tank 2 is overflowing with washing water in the form of jet water. Therefore, even during normal use, the water level sensor may erroneously detect the water level of the jet water as the water level of the overflow.

Therefore, in Embodiment 1, the overflow detection section 16 is arranged outside the seal section 11 (in the -Y direction). Therefore, under normal use conditions, the flushing water in the form of jet water does not splash on the overflow detecting section 16 . As a result, erroneous detection by the overflow detection unit 16 during normal use can be more reliably suppressed.

The overflow detection unit 16 is provided at a lower portion 6 a of the door 6 at a position lower than the height of the opening of the overflow port 14 . As a result, the overflow detecting part 16 can detect the overflow before the overflow flowing through the overflow receiver 13 through the seal missing part 12 flows into the overflow port 14.例文帳に追加In this case, overflow water does not flow into the overflow pan 24 . Therefore, final overflow detection by the overflow detector 26 provided in the overflow pan 24 is not performed (or even if it is detected, the overflow state is not detected). That is, when the overflow detector 16 detects the overflow, the water supply is stopped by closing the water supply valve 27, so that no water flows into the overflow pan 24 from the overflow port 14, so the overflow need not be detected.

In other words, for example, the overflow detection unit 16 can detect the overflow in a pattern where the water level is slightly higher than that during normal washing. As a result, the drain pump 22 is driven based on the overflow detection information from the overflow detector 16 to drain the washing water accumulated on the bottom surface of the washing tank 2 . Then, the supply of cleansing water from the cleansing pump 23 can be retried again. In other words, before the water overflowing from the cleaning tank 2 flows into the overflow port 14, it is possible to quickly retry draining water and supplying water.

Next, the controller 30 of the dishwasher 10 will be explained using FIG.

FIG. 5 is a block diagram showing the configuration of the dishwasher 10. As shown in FIG.

As shown in FIG. 5, the control unit 30 of the dishwasher 10 further has a flooding state confirmation instructing unit 35a.

First, when the overflow detection unit 16 detects the overflow state, the overflow state confirmation instructing unit 35a drives the drain pump 22, which is a drain unit, to drain the washing water accumulated on the bottom surface of the washing tank 2 to the outside. .

Next, when the flood detection unit 16 confirms that the flood state has been resolved, the flood state confirmation instructing unit 35a supplies washing water from the water supply valve 27, which is the water supply unit, again. Thereby, the flood state confirmation instructing section 35a confirms whether or not the flood state is detected by the flood detection section 16. FIG.

In other words, the flood state confirmation instructing unit 35a can confirm whether the flood state detected by the flood detection unit 16 is a temporary flood that can be resolved by retrying, or the flooding caused by some failure that cannot be resolved by retrying.

Hereinafter, the outline of the control unit 30 of the dishwasher 10 and the elements constituting the control unit 30 will be described with reference to FIG.

<Control unit (computer device)>
The control unit 30 is configured by, for example, a computer device. A general-purpose computer device, for example, can be used as the computer device.

That is, the computer device includes, for example, a processing unit 31, a storage unit 32, a display unit 33, etc., as shown in FIG. Note that the computer device may further include an input device, a storage device, an interface, etc., which are not shown.

The control unit 30 controls, for example, the overflow detecting unit 16, the drain pump 22 as the drain unit, the water supply valve 27 as the water supply unit, etc. of the dishwasher 10. FIG.

<Processing part>
The processing unit 31 is configured by, for example, a central processing unit (CPU; Central Processing Unit), a microcomputer, or a processing device capable of executing computer-executable instructions.

<Memory part>
The storage unit 32 includes, for example, a ROM (Read Only Memory), an EEPROM (Electrically Erasable and Programmable Read-Only Memory), a RAM (Random Access Memory), a flash SSD (Solid State Device), a hard disk, and a USB (Universal USB) memory. , a magnetic disk, an optical disk, a magneto-optical disk, or the like.

The storage unit 32 includes a program 35 and the like. If the control unit 30 is connected to a network, the program 35 may be downloaded from the network as necessary.

<Program>
The program 35 included in the storage unit 32 may include a program that implements the function of the flood state confirmation instructing unit 35a. A program that implements the function of the flood state confirmation instructing section 35a is read from the storage section 32 and executed by the processing section 31 at the time of execution.

Specifically, first, when the overflow detection unit 16 detects the overflow state, the overflow state confirmation instructing unit 35a drives the drain pump 22, which is a drain unit, to remove the washing water accumulated on the bottom surface of the washing tank 2. , drain to the outside.

Next, the flood state confirmation instructing section 35a confirms whether or not the flood state has been resolved by the flood detection section 16. FIG.

After confirming that the flooding state has been resolved, the flooding state confirmation instructing section 35 a again drives the water supply valve 27 as the water supply section to supply washing water into the washing tank 2 . That is, the flood state confirmation instructing unit 35a confirms whether the flood state is detected by the flood detection unit 16 or not.

It should be noted that the series of confirmations of the flooding state by the flooding state confirmation instructing section 35a can be retried (repeatedly). Therefore, the number of retries is not limited to one, and may be multiple times.

Moreover, the program 35 included in the storage unit 32 may include a program that realizes the function of the notification instructing unit 35b, if necessary.

In other words, when the flood detection unit 16 detects the flood state again during confirmation of the flood state, the flood state confirmation instructing unit 35a stops supplying the wash water from the water supply valve 27 .

Next, the notification instructing unit 35b notifies the user of the flooding state by means of sound or display on the display unit 33. FIG. A program that realizes the function of the notification instructing section 35b is also read from the storage section 32 and executed by the processing section 31 at the time of execution.

<Display part>
The display unit 33 may have a configuration capable of displaying detection of the flood state again from the notification instruction unit 35b, for example. Specifically, the display unit 33 may be configured to have a speaker or the like capable of giving notification by sound, for example. Also, instead of the display unit 33, a configuration may be adopted in which only the notification is made by sound using a speaker or the like.

The controller 30 is configured and operates as described above.

Note that the present disclosure also includes appropriately combining any of the various embodiments described above. By these, the effect which each embodiment has can be show|played similarly.

As described above, the dishwasher of the present invention includes a washing tank having an opening for storing dishes, and a door arranged to open and close the opening of the washing tank. The door has a sealing portion capable of sealing the peripheral edges of the upper and lower portions and both side portions in the closed state. The seal portion has a seal release portion on at least a part of the side portion or the bottom portion thereof, through which the water level is raised from the bottom surface of the washing tank and the overflowing water is released. In addition, the cleaning tank is provided outside the seal part at the bottom of the door, and is arranged at a position lower than the height of the overflow opening, where the overflow water that has passed through the seal missing part flows, and outside the seal part at the bottom of the door. provided with a flood detection unit for detecting a flood condition.

Also, the overflow detection unit may be composed of a pair of electrodes, and detect the state of overflow from the cleaning tank based on the change in electrical characteristics between the pair of electrodes.

Further, the dishwasher of the present invention comprises a water supply unit for supplying wash water for washing dishes to the washing tank, a drain unit for draining wash water accumulated on the bottom surface of the wash tank, an overflow detection unit, a drain unit, A control unit for controlling the water supply unit is further provided. When the overflow detection unit detects that water is overflowing from the washing tank, the control unit drains the washing water accumulated on the bottom surface of the washing tank by the drainage unit. It has an overflow condition confirmation instructing unit that supplies wash water from the water supply unit and confirms whether or not the overflow condition is detected by the overflow detection unit.

In addition, when the overflow detection unit detects the overflow state again in confirmation of the flood state by the overflow state confirmation instruction unit, the control unit stops the supply of washing water from the water supply unit and confirms that the overflow state exists. may further include a notification instructing unit that notifies at least either by sound or display.

The present invention is useful for dishwashers where proper draining and refilling retries are desired in the event of temporary flooding.

REFERENCE SIGNS LIST 1 main body 2 washing tank 2a opening 3a, 3b rails 4a, 4b tableware tray 5, 5a, 5b, 5c washing nozzle 6 door 6a lower portion 7 bottom 8 object to be washed 9 exhaust port 10 dishwasher 11 seal portion 12 seal missing portion 12a 1st seal missing part 12b 2nd seal missing part 13 Overflow receiver 14 Overflow port 14a First overflow port 14b Second overflow port 15 Overflow 16, 16a, 16b Electrode (Flooding detector)
17 introduction path 20 drainage port 21 residue filter 22 drainage pump (drainage section)
23 cleaning pump (cleaning part)
24 Overflow receiving pan 26 Overflow detector 27 Water supply valve (water supply unit)
30 control unit (computer device)
31 processing unit 32 storage unit 33 display unit 35 program 35a flood state confirmation instruction unit 35b notification instruction unit

Claims (4)

a washing tank having an opening for storing tableware;
a door disposed so as to be able to open and close the opening of the cleaning tank,
The door is
In the closed state, it has a sealing part capable of sealing the upper and lower parts and the peripheral edges of both sides,
The seal portion is
At least a part of the side part or the lower part has a seal release part where the water level is raised from the bottom surface of the washing tank and the overflowing water can escape,
A flood port provided outside the seal portion at the bottom of the door into which the overflow water flows through the seal missing portion, and a position lower than the height of the flood port outside the seal portion at the bottom of the door. an overflow detection unit disposed to detect a flood state before the overflow flows into the overflow port ;
dishwasher. The overflow detection unit is composed of a pair of electrodes, and detects a state of overflow from the cleaning tank based on a change in electrical characteristics between the pair of electrodes.
A dishwasher according to claim 1. a water supply unit for supplying washing water for washing dishes to the washing tank;
a drainage unit for draining the cleaning water accumulated on the bottom surface of the cleaning tank;
a control unit that controls the overflow detection unit, the drainage unit, and the water supply unit;
When the overflow detection unit detects that the inside of the cleaning tank is overflowing, the control unit drains the cleaning water accumulated on the bottom surface of the cleaning tank by the drainage unit, and the overflow detection unit eliminates the overflowing state. is confirmed, flushing water is again supplied from the water supply unit, and the overflow state confirmation instructing unit confirms whether or not the overflow state is detected by the overflow detection unit,
A dishwasher according to claim 1 or claim 2. When the overflow detection unit detects the overflow state again in confirmation of the flood state by the flood state confirmation instruction unit, the control unit stops the supply of washing water from the water supply unit and further has a notification indicator that at least either sounds or displays that there is
A dishwasher according to claim 3.

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