WO2020071006A1

WO2020071006A1 - Dishwasher

Info

Publication number: WO2020071006A1
Application number: PCT/JP2019/033330
Authority: WO
Inventors: 識義的場; 啓明宮瀬
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2018-10-05
Filing date: 2019-08-26
Publication date: 2020-04-09
Also published as: JPWO2020071006A1; CN112533523A; JP7236609B2

Abstract

A dishwasher (10) is provided with a washing tank (2) including an opening portion (2a) for accommodating tableware, and a door (6) disposed in such a way as to be capable of opening and closing the opening portion (2a). The door (6) has a seal portion (11) capable of sealing peripheral edges at the top and bottom and both sides thereof when in a closed state, wherein the seal portion (11) includes, in at least a portion of a side portion or a lower portion thereof, a seal escape location from which overflow water that overflows when the water level rises from a bottom surface of the washing tank (2) can escape. The washing tank (2) is provided with: an overflow port (14) which is provided outside the seal portion (11) of the lower portion (6a) of the door (6), and into which the overflow water flows; and an overflow detecting unit (16) which is disposed outside the seal portion (11) of the lower portion of the door (6), in a position lower than the height of the overflow port (14), to detect an overflow state. There is thus provided a dishwasher (10) with which a retry can be performed if the overflow is temporary.

Description

dishwasher

The present invention relates to a dishwasher having an overflow detection unit.

Conventionally, when a dishwasher circulates and uses washing water, the washing water is supplied, for example, to a certain water level of a water tank provided at the bottom. At this time, when the water level sensor detects that the cleaning water has been supplied to a certain water level, the supply of the cleaning water to the cleaning tank is stopped. However, when the washing water is supplied, the water level sensor may perform erroneous detection due to, for example, foaming due to an incorrect amount of detergent input. In this case, even if the washing water reaches a certain water level, the water level sensor does not function (detect), so that the water supply continues. For this reason, the water level of the washing water keeps rising, and there is a case where the washing water overflows from the water supply tank provided at the bottom. In this case, usually, a retry operation of once draining the cleaning water in the cleaning tank and supplying water again is performed. As a result, the overflow state is eliminated, and the dishwasher is returned to a normal operation.

食 Further, there is known a dishwasher provided with a water receiving pan for receiving water leaking due to deterioration of a door seal member and a water detecting unit for detecting water accumulated in the water receiving pan (for example, see Patent Document 1).

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

JP 2001-204673 A

The present invention provides a dishwasher that can be retried in case of temporary overflow.

食 The dishwasher according to the present invention includes a washing tank having an opening for accommodating tableware, and a door provided to be able to open and close the opening of the washing tank. The door has a seal 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, on at least a part of a side portion or a lower portion, a seal removal portion through which water overflowing from the bottom surface of the washing tank is released. Further, the washing tank is provided outside the seal portion at the lower part of the door, and is disposed at a position lower than the height of the overflow port, outside the seal part at the lower part of the door, and at the overflow port through which the overflow that has passed through the seal removal part flows. And an overflow detector for detecting an overflow state.

According to the dishwasher of the present invention, the seal portion has a seal-peeling portion through which water overflows from the bottom of the washing tank by rising the water level. Further, an overflow detector is provided outside the seal portion at a position lower than the height of the overflow port and detects an overflow state. Thereby, before the overflow flows into the overflow port, the overflow state is detected, the washing water is drained, and after the draining, the supply of the washing water can be retried again.

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

Hereinafter, the dishwasher according to the embodiment will be described with reference to the accompanying drawings. In the drawings, substantially the same members are denoted by the same reference numerals.

(Embodiment)
Hereinafter, the dishwasher 10 according to the present embodiment will be described with reference to FIGS.

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

The 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 cleaning tank 2 has, for example, an opening 2a on the front surface, and stores an object to be cleaned such as tableware. The door 6 is provided so as to open and close the opening 2 a of the cleaning tank 2.

The door 6 has a seal portion 11 that seals the upper and lower portions of the opening 2a and the peripheral edges of both sides in the closed state. The seal portion 11 has a seal missing portion 12 provided on at least a part of a side portion or a lower portion. At the time of supplying water such as during washing, the seal detached portion 12 raises the water level from the bottom surface of the washing tank 2 and allows overflowing water overflowing from the washing tank 2 to flow to an overflow receiver 13 described later.

The washing tank 2 has an overflow port 14 provided so as to protrude from the bottom surface of the overflow receiver 13 provided outside the seal portion 11 in the lower portion 6 a of the door 6. The overflow port 14 overflows by raising the water level from the bottom in the washing tank 2, and the overflow that flows through the seal removal portion 12 flows in. Further, the washing tank 2 includes an overflow detecting unit 16 provided on a bottom surface of an overflow receiver 13 disposed outside the seal unit 11 at a lower portion 6 a of the door 6. The overflow detector 16 is disposed at a position lower than the height of the overflow port 14 that projects, and detects an overflow state.

That is, the overflow detector 16 is provided outside the seal portion 11 of the door 6 (−Y direction). For this reason, the overflow detector 16 is not exposed to the inside of the washing tank 2 during normal use, so that washing water or the like is not applied. Thereby, malfunctions such as erroneous detection of the overflow detection unit 16 during normal use can be suppressed. The overflow detector 16 is disposed at a position lower than the overflow port 14. Thus, the overflow state can be detected by the overflow detector 16 before the overflow flows into the overflow port 14. For this reason, in a pattern in which the overflow level is such that the water level is slightly higher than that in the normal washing, the overflow detector 16 can quickly detect the overflow. As a result, the washing water can be drained based on the overflow information detected by the overflow detecting unit 16, and then the cleaning water can be retried again. That is, before the overflow from the washing tank 2 flows into the overflow port 14, the water supply can be quickly retried.

部材 Hereinafter, each member constituting the dishwasher 10 will be described with reference to FIGS.

<Body>
The main body 1 constitutes an outer shell of the dishwasher 10, and stores a washing tank 2 therein. In addition, the main body 1 may be housed in a built-in type, for example, below a kitchen counter. Further, the main body 1 may constitute a main body of a dishwasher of a type which is independently placed on a kitchen or the like.

<Wash tank>
The cleaning tank 2 has an opening 2a on the front side (−Y direction) of the main body 1, for example. In the cleaning tank 2,

tableware trays

4a and 4b for storing items to be cleaned such as tableware are arranged. The washing tank 2 may have a structure in which an opening is provided at an upper portion and a dish tray for storing an object to be washed such as tableware is arranged from the upper portion.

The washing tank 2 includes, for example, a water level detecting unit (not shown) mounted on a lower part.

In other words, the washing tank 2 is supplied with washing water from an external faucet (not shown) via a water supply hose (not shown) and a water supply valve 27 (see FIG. 5). Then, the water level detection unit detects the level of the washing water to be supplied, and when the water level reaches an appropriate level for washing, the water supply valve is closed to stop supplying water from the external faucet. The water supply valve may be replaced by a water supply pump.

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

The water level detection unit may be constituted by, for example, a switch for detecting the pressure of the supplied washing water. Further, the water level detection unit may be configured by another configuration such as a float type.

<Door>
The door 6 is provided so as to open and close the opening 2 a of the cleaning tank 2. 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 or more doors.

When the door is opened toward the near side (−Y direction), even when the door 6 is opened so that the open position of the door 6 is located at the lower front side, the open position of the door 6 is located at the upper front. The configuration may be such that the door 6 is opened such that Further, when the door 6 is opened leftward (−X direction) or rightward (X direction), the door 6 may be opened such that the opening position of the door 6 is on the left or right side. In the case of two or more doors 6, the doors 6 may be opened symmetrically, that is, the doors may be opened in a so-called double door, or the doors 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. When the door 6 is closed, the seal portion 11 seals the upper and lower portions of the door 6 and the peripheral edges of both side portions.

Further, as shown in FIG. 4, the seal portion 11 has a seal missing portion 12 formed on the side seal portion 11, for example. In the first embodiment, an example will be described in which first and second

seal missing portions

12a and 12b are formed on the left and right sides of the seal portion 11 as the seal missing portion 12. In the case where the first seal missing portion 12a and the second seal missing portion 12b are not distinguished, they are simply described as the seal missing portions 12.

The seal-leaved portion 12 flows from the bottom surface 7 of the cleaning tank 2 for some reason to a level higher than the water level specified during normal cleaning, to allow overflowing water to overflow, and to flow outside the seal portion 11. That is, the overflow is discharged outside the cleaning tank 2.

シール Note that, as shown in FIG. 4, the seal missing portion 12 is not limited to the case where it is provided in the side seal portion 11. For example, the seal missing portion 12 may be provided on at least a part of the lower seal portion 11.

Then, the overflow 15 indicated by a white arrow in FIG. 4 passes through the first seal elimination portion 12a and the second seal elimination portion 12b formed on the left and right sides of the seal portion 11, and overflows as illustrated in FIG. For example, it flows toward the center of the front side of the cleaning tank 2 along the line 13. In addition, it is desirable that the seal missing portion 12 formed in the seal portion 11 be provided at a position similar to or lower than the lower portion 6a of the door 6 shown in FIG.

Also, as shown in FIG. 2, the overflow 15 indicated by a white arrow that has passed through the first seal detachment portion 12 a and the second seal detachment portion 12 b flows between the seal portion 11 and the overflow receiver 13. At this time, the overflow flows through the overflow receiver 13 (-Z direction) lower than the positions of the openings of the first overflow port 14a and the second overflow port 14b constituting the overflow port 14, for example, toward the center of the washing tank 2. .

溢 Then, the overflow that has flowed through the overflow receiver 13 reaches between the pair of

electrodes

16 a and 16 b constituting the overflow detector 16. At this time, as will be described later, the overflow detector 16 is disposed at a position lower than the opening of the overflow port 14. In other words, the opening of the overflow port 14 is provided at a position at a certain height from the lower portion 6a of the door 6 and protrudes in the Z direction.

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

electrodes

16 a and 16 b of the overflow detector 16.

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

Furthermore, as will be described later, the overflow 15 that has escaped from the seal detachment portion 12 is detected by the overflow detector 16 at a relatively low water level. Therefore, retry (repetition) can be performed early in order to determine whether it is a temporary flood or a flood due to a failure. Here, the retry is a step of re-supplying water after draining the cleaning water and checking whether or not overflow occurs. Note that the number of retries is not limited to one, and may be executed a plurality of times.

溢 The overflow that has escaped from the seal detachment point 12 flows through the overflow receiver 13 as described above. At this time, for example, when the overflow detecting unit 16 cannot 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 from the opening of the overflow port 14 and is guided to the overflow receiving pan 24 via the introduction path 17. As a result, the state in which the overflow 15 overflows from the exhaust port 9 in the upper part of the main body 1 can be more reliably prevented.

<Tableware tray>
As shown in FIG. 3, the dish tray 4a and the dish tray 4b store items to be washed 8 such as tableware. The

tableware trays

4a and 4b are arranged, for example, along a pair of rails 3a and a pair of rails 3b provided on both sides of the inner surface of the cleaning tank 2 shown in FIG. You. In the example shown in FIG. 1, a rail 3a is provided on the upper side and a rail 3b is provided on the lower side, and the

tableware trays

4a and 4b can be arranged in two upper and lower stages.

<Water supply valve (water supply section)>
When the water supply valve constituting the water supply unit is opened, the cleaning water for cleaning the object to be cleaned such as tableware is supplied to the cleaning tank 2.

Specifically, the 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 cleaning water is supplied to a water level set at a position lower than the seal portion 11 below the door 6, and is stored at the bottom of the cleaning tank 2. At this time, the control of the water level of the supplied washing water is executed by, for example, a water level detection unit.

<Wash nozzle (wash section)>
The cleaning nozzle 5, which is a cleaning unit, includes, for example, three

cleaning nozzles

5a, 5b, and 5c. Each of the

cleaning nozzles

5a, 5b, and 5c is disposed, for example, at a different position in the cleaning tank 2 or at a different height. The

cleaning nozzles

5a, 5b, and 5c spray cleaning water onto the object 8 such as tableware stored in the tableware tray 4a and the tableware tray 4b to wash the object 8 to be cleaned.

The

cleaning nozzles

5a, 5b, and 5c are not limited to the above-described arrangement configuration, and may be disposed at appropriate positions in the cleaning tank 2 according to the configuration and shape of the cleaning tank 2 and the shape and arrangement of the dish tray. Is desirable.

Also, a heater may be provided in the vicinity of the lower portion in the cleaning tank 2 to heat the cleaning water to make it hot water, and the hot water may be supplied to each of the

cleaning nozzles

5a, 5b, and 5c. Thereby, the cleaning efficiency is further improved.

<Cleaning pump (cleaning unit)>
As shown in FIG. 3, the cleaning pump 23 serving as a cleaning unit is disposed outside the bottom surface 7 of the cleaning tank 2 and sucks the cleaning water stored in the cleaning tank 2. Then, the suctioned cleaning water is supplied to the

cleaning nozzles

5a, 5b, and 5c, which are the cleaning nozzles 5, and the object to be cleaned is cleaned. Further, the washing water that has been washed and falls to the bottom surface 7 of the washing tank 2 is sucked again, and the above operation is repeated to circulate the washing water.

<Drain pump (drain section)>
The drainage pump 22, which is a drainage part, discharges washing water accumulated on the bottom surface 7 of the washing tank 2 from the drainage port 20 to the outside of the machine via a drainage hose or the like after washing the object to be washed. At this time, it is preferable that the drain filter 20 is provided with a residue filter 21. The residue filter 21 collects residues contained in the cleaning water. This prevents problems such as clogging of the circulation path and the drainage path due to residue and the like.

<Overflow port>
The overflow port 14 is provided on the lower portion 6a of the door 6 outside the seal portion 11 (−Y direction). The overflow port 14 is provided so that the supplied cleaning water overflows from the bottom surface 7 in the cleaning tank 2 by rising the water level, and the overflow flowing from the overflow hole 13 through the seal removal portion 12 flows in. The overflow port 14 has an opening at a position higher than the lower end of the seal portion 11 in 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 guides the overflow to the overflow pan 24 via the introduction path 17 before the overflow overflows from the overflow receptacle 13.

At this time, the overflow detector 26 may be provided on the overflow pan 24. The overflow detector 26 detects that there is water in the overflow pan 24. The overflow detection unit 26 only needs to be able to detect that the water in the overflow receiving pan 24 is at a predetermined water level. Therefore, the overflow detection unit 26 may be configured as, for example, a float type. 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 true overflow means that, for example, when the bottom of the washing tank 2 is damaged, water leaks from the bottom of the washing tank 2 without reaching the overflow detector 16 even when water is supplied, and leaks into the overflow receiving pan 24. This means a state where water has to be detected only by the overflow detection unit 26.

<Overflow detector>
As shown in FIG. 2, the overflow detection unit 16 includes, for example, a pair of

electrodes

16a and 16b. As shown in FIG. 3, the overflow detector 16 is disposed at a position lower than the height of the opening of the overflow port 14 on the outside (−Y direction) of the seal portion 11 in the lower portion 6 a of the door 6. The overflow detecting unit 16 detects a state of the overflow flowing through the overflow receiver 13.

Specifically, the overflow detecting unit 16 detects an overflow state based on a change in electrical characteristics between the pair of

electrodes

16a and 16b, for example, a change in electrical resistance. Therefore, it is desirable that the space between the pair of

electrodes

16a and 16b is, for example, water-repellent. As a result, when the water level of the overflow in the overflow receiver 13 decreases, water hardly remains between the pair of

electrodes

16a and 16b, and the water is drawn more quickly. Therefore, it can be quickly determined whether or not the overflow state has been released.

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. That is, during normal use, the cleaning water overflows in the cleaning tank 2 as jet water. For this reason, the water level sensor may erroneously detect the water level of the jet water as the water level of the overflow water even during normal use.

Therefore, in the first embodiment, the overflow detector 16 is disposed outside the seal 11 (in the −Y direction). Therefore, in the normal use state, the washing water that has become the jet water does not reach the overflow detecting unit 16. Thereby, erroneous detection of the overflow detector 16 during normal use can be suppressed more reliably.

The overflow detector 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 portion 16 can detect the overflow before the overflow flowing through the overflow receiving portion 13 through the overflow portion 14 through the seal removal portion 12. In this case, the overflow does not flow into the overflow pan 24. For this reason, the final detection of the overflow by the overflow detection unit 26 provided in the overflow receiving pan 24 is not performed (or the overflow state is not detected even if it is detected). That is, when the overflow is detected by the overflow detection unit 16, the water supply is stopped by closing the water supply valve 27, so that the water does not flow into the overflow receiving pan 24 from the overflow port 14, so that the overflow need not be detected.

That is, for example, in a pattern in which the overflow flows to the extent that the water level is slightly higher than that in the normal cleaning, the overflow detector 16 can detect the overflow. Thereby, the drainage pump 22 is driven based on the overflow detection information of the overflow detector 16 to drain the washing water accumulated on the bottom surface of the washing tank 2. Then, the supply of the cleaning water from the cleaning pump 23 can be retried again. That is, before the overflow from the washing tank 2 flows into the overflow port 14, retry of drainage and water supply can be quickly performed.

Next, the control unit 30 of the dishwasher 10 will be described with reference to FIG.

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

制御 As shown in FIG. 5, the control unit 30 of the dishwasher 10 further includes an overflow state confirmation instruction unit 35a.

When the overflow state is detected by the overflow detection unit 16, the overflow state confirmation instructing unit 35 a 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 overflow state confirmation instructing unit 35a confirms that the overflow state has been resolved by the overflow detecting unit 16, the flush water is supplied again from the water supply valve 27 which is a water supply unit. Accordingly, the overflow state confirmation instructing unit 35a confirms whether or not the overflow state is detected by the overflow detector 16.

In other words, the overflow state confirmation instruction unit 35a can confirm whether the overflow state detected by the overflow detection unit 16 is a temporary overflow that can be resolved by retry or an overflow due to some failure that cannot be resolved by retry.

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

<Control unit (computer device)>
The control unit 30 is composed of, for example, a computer device. As the computer device, for example, a general-purpose computer device can be used.

That is, as shown in FIG. 5, the computer device includes, for example, a processing unit 31, a storage unit 32, a display unit 33, and the like. Note that the computer device may further include an input device, a storage device, an interface, and the like (not shown).

The control unit 30 controls, for example, the overflow detecting unit 16, the drain pump 22, which is a drain unit, and the water supply valve 27, which is a water supply unit, of the dishwasher 10.

<Processing unit>
The processing unit 31 includes, for example, a central processing unit (CPU; Central Processing Unit), a microcomputer, or a processing device that can execute a computer-executable instruction.

<Storage unit>
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 (SocialUsbD), and a flash SSD (SolidUsb. , A magnetic disk, an optical disk, a magneto-optical disk, and the like.

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

<Program>
The program 35 included in the storage unit 32 only needs to include a program that realizes the function of the overflow state confirmation instruction unit 35a. The program that implements the function of the overflow state confirmation instruction unit 35a is read from the storage unit 32 and executed by the processing unit 31 at the time of execution.

More specifically, when the overflow state is detected by the overflow detection unit 16, the overflow state confirmation instructing unit 35 a drives the drain pump 22, which is a drain unit, to remove the washing water accumulated on the bottom of the washing tank 2. Drain outside.

Next, the overflow state confirmation instructing section 35a confirms whether or not the overflow state has been eliminated by the overflow detecting section 16.

(4) After confirming that the overflow state has been resolved, the overflow state confirmation instructing unit 35a drives the water supply valve 27, which is a water supply unit, again to supply the cleaning water into the cleaning tank 2 again. That is, the overflow state confirmation instruction unit 35a confirms whether or not the overflow state is detected by the overflow detector 16.

Note that the above-described series of check of the overflow state by the overflow state check instruction unit 35a can be retried (repeated). Therefore, the number of retries is not limited to one, and may be plural.

The program 35 included in the storage unit 32 may include a program that implements the function of the notification instruction unit 35b as necessary.

In other words, the overflow state check instruction unit 35a stops the supply of the wash water from the water supply valve 27 when the overflow detection unit 16 detects the overflow state again in the check of the overflow state.

Next, the notification instruction unit 35b notifies the user of the overflow state by sound or display on the display unit 33. Note that a program that implements the function of the notification instruction unit 35b is also read from the storage unit 32 and executed by the processing unit 31 at the time of execution.

<Display unit>
The display unit 33 may have any configuration as long as it can display the detection of the overflow state again from the notification instruction unit 35b, for example. Specifically, the display unit 33 may be configured to include, for example, a speaker capable of notifying by sound. Further, a configuration may be adopted in which only the notification by sound is performed by a speaker or the like instead of the display unit 33.

制御 As described above, the control unit 30 is configured and operates.

In addition, the present disclosure includes appropriately combining any of the various embodiments described above. With these, the effects of the respective embodiments can be similarly exhibited.

As described above, the dishwasher of the present invention includes a washing tank having an opening for accommodating tableware, and a door arranged to open and close the opening of the washing tank. The door has a seal portion that can seal the peripheral edges of the upper and lower portions and both side portions in the closed state. The seal portion has, on at least a part of a side portion or a lower portion, a seal removal portion through which overflow water that overflows from the bottom surface of the cleaning tank is released. Further, the washing tank is provided outside the seal portion at the lower part of the door, and is disposed at a position lower than the height of the overflow port, outside the seal part at the lower part of the door, and at the overflow port through which the overflow that has passed through the seal removal part flows. And an overflow detector for detecting an overflow state.

The overflow detector may include a pair of electrodes, and detect a state of overflow from the cleaning tank based on a change in electrical characteristics between the pair of electrodes.

Further, the dishwasher of the present invention is a water supply unit that supplies washing water for washing dishes to the washing tank, a drain unit that drains washing water accumulated on the bottom of the washing tank, an overflow detection unit, and a drain unit. And a control unit for controlling the water supply unit. The control unit, when the overflow detection unit detects a state of overflow from the washing tank, drains the washing water accumulated on the bottom of the washing tank by the drainage unit, and when the overflow detection unit confirms that the overflow state has been resolved, the control unit again performs. A flush state check instruction unit is provided for supplying wash water from the water supply unit and confirming whether or not the overflow state is detected by the overflow detector.

In addition, when the overflow detection unit detects the overflow state again in the overflow state check by the overflow state confirmation instruction unit, the control unit stops the supply of the wash water from the water supply unit, and the overflow state is set. May be further provided in the form of at least one of a sound and a display.

The present invention is useful for dishwashers where proper drainage and water supply retries are desired in case of temporary flooding.

DESCRIPTION OF SYMBOLS 1 Main body 2 Cleaning tank 2a Opening 3a,

3b Rail

4a,

4b Tableware tray

5, 5a, 5b, 5c Cleaning nozzle 6 Door 6a Lower part 7 Bottom surface 8 Object to be cleaned 9 Exhaust port 10 Dishwasher 11 Seal part 12 Seal removal part 12a First seal missing part 12b Second seal missing part 13 Overflow receiver 14 Overflow port 14a First overflow port 14b Second overflow port 15

Overflow

16, 16a, 16b Electrode (overflow detection unit)
17 Introductory path 20 Drain port 21 Residual filter 22 Drain pump (drain section)
23 Cleaning pump (cleaning unit)
24 Overflow receiving pan 26 Overflow detecting part 27 Water supply valve (water supply part)
30 control unit (computer device)
31 processing unit 32 storage unit 33 display unit 35 program 35a overflow state confirmation instruction unit 35b notification instruction unit

Claims

A washing tank having an opening for storing tableware,
A door disposed to be able to open and close the opening of the cleaning tank,
The door is
In a closed state, it has a seal portion that can seal the peripheral edges of the upper and lower portions and both sides,
The seal portion,
At least a part of a side or a lower portion has a seal detachment portion through which overflow from the bottom of the washing tank is allowed to overflow and overflow,
An overflow port provided below the seal portion below the door and through which the overflow that has passed through the seal removal portion flows, and a position outside the seal portion below the door at a position lower than the height of the overflow port. An overflow detection unit that is disposed and detects an overflow state.
dishwasher.
The overflow detector 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.
The 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 washing water accumulated on the bottom of the washing tank,
The overflow detection unit, the drainage unit, and a control unit that controls the water supply unit, further comprising:
The control unit, when the overflow detection unit detects a state of overflow from the inside of the washing tank, drains washing water accumulated on a bottom surface of the washing tank by the drainage unit, and the overflow detection unit cancels the overflow state. When confirming, again, the flush water is supplied from the water supply unit, and a flood state confirmation instruction unit for confirming whether or not the overflow state is detected by the flood detection unit,
The dishwasher according to claim 1 or claim 2.
The control unit, in the check of the overflow state by the overflow state confirmation instruction unit, when the overflow detection unit detects the overflow state again, stops the supply of the wash water from the water supply unit, in the overflow state. It further has a notification instruction unit that notifies at least one of a sound and a display,
The dishwasher according to claim 3.