JP2012228462A - Dishwasher - Google Patents

Dishwasher Download PDF

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Publication number
JP2012228462A
JP2012228462A JP2011099908A JP2011099908A JP2012228462A JP 2012228462 A JP2012228462 A JP 2012228462A JP 2011099908 A JP2011099908 A JP 2011099908A JP 2011099908 A JP2011099908 A JP 2011099908A JP 2012228462 A JP2012228462 A JP 2012228462A
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water level
drying
cleaning
time
hot water
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JP2011099908A
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JP5666978B2 (en
Inventor
Yoshihiko Maekawa
善彦 前川
Ichiro Akita
一郎 秋田
Kyota Maeda
恭大 前田
Akira Ikeda
亮 池田
Takashi Yashima
崇 八島
Soichiro Iwamoto
宗一郎 岩本
Shinji Santo
伸二 山東
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Harman Co Ltd
株式会社ハーマン
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Abstract

PROBLEM TO BE SOLVED: To provide a dishwasher properly drying washing objects even if a supply amount per unit time of dehumidifying hot water supplied to a dehumidification part is reduced.SOLUTION: A control means H executes: washing processing to wash the washing objects inside a washing space Q; rinse processing to rinse the washing objects; and drying processing to dry the washing objects. When a drying discharge water level Y1b is detected in a drying discharge water level detection means J in the drying processing, the control means H operates a drainage pump 6, repeats drying drainage operation discharging the hot water of the drying discharge water level Y1b, and when a lapse time after starting the drying processing becomes a set drying processing time, stops the drying processing. According to a water level arrival time until the drying discharge water level Y1b is newly detected in the drying discharge water level detection means J after discharging the hot water stored in a bottom part of the washing space in the drying drainage operation, the set drying processing time is changed and set.

Description

The present invention provides ventilation means through a ventilation path extending from a drain pump for sucking hot water from the bottom of the cleaning space of the cleaning tank and discharging it to the outside, and an air suction port from the cleaning space and an air supply port to the cleaning space. The air in the cleaning space circulated in the air is cooled by contact with hot water for dehumidification to condense moisture in the air to dehumidify, and the hot water and condensed water after dehumidification treatment are removed from the cleaning tank. A dehumidifying part configured to flow in, a heating means for heating the air in the cleaning space, and a hot water intermittent means for intermittently supplying hot water to the cleaning space and intermittently supplying hot water to the dehumidifying part. And a discharge water level detecting means for detecting that the level of the hot water stored at the bottom of the cleaning space is a drying discharge water level, a cleaning process for cleaning a cleaning object in the cleaning space, and the cleaning object Rinse things And a control means for performing a drying process for drying the cleaned object is provided,
In the drying process, the control means heats the air in the cleaning space by the heating means, and brings the hot water for dehumidification and the air passing through the ventilation path into contact with each other. And the hot water intermittent means, and when the drying discharge water level is detected by the drying discharge water level detection means, the drain pump is operated to supply hot water at the drying discharge water level. The present invention relates to a dishwasher that is configured to repeat a draining drain operation for discharging and that is configured to stop the drying process when an elapsed time from the start of the drying process reaches a set drying process time. .

Such dishwashers are used for washing dishes such as dishes and teacups.
That is, the dishwasher is used in various usage forms, and the standard use form is that hot water for washing is contained in the washing space in a state where the object to be washed is accommodated in the washing space. The cleaning water is discharged from the cleaning nozzle equipped in the cleaning space as cleaning water, and then the hot water in the cleaning space is discharged by the cleaning drainage operation. Rinsing water is supplied into the space, and the rinsing process is performed by ejecting the rinsing water from the cleaning nozzle equipped in the cleaning space. Then, the hot water in the cleaning space is discharged by the cleaning drain operation. After that, the drying process is performed.

  Moreover, the above-described dishwasher cools the air passing through the ventilation path by contacting with the hot water for dehumidification while heating the air in the washing space by the heating means as a drying process. Since moisture is condensed and dehumidified, when performing the drying process, moist air is not discharged outside the machine, so the moist air is installed by the user or the dishwasher. Therefore, it is possible to prevent the device from being sprayed on other devices existing in the place where the operation is performed, and the usability is improved.

  Further, the dishwasher described above is configured such that the dehumidifying section causes the dehumidified hot water and condensed water to flow into the washing tank, and the control means uses the drying discharge water level detection means to perform the drying discharge water level. Is detected, the drainage pump is operated to repeat the drying drainage operation for discharging the hot water at the level of the drainage discharge water. Therefore, the dehumidified hot water and condensed water from the dehumidifying section are configured. Can be discharged to the outside accurately using a drainage pump.

  As a conventional example of such a dishwasher, when the set drying process time is set to a predetermined time and the elapsed time since the control means starts the drying process becomes the set drying process time, the drying process is performed. (For example, see Patent Document 1 (see paragraph [0054]).

JP 2010-223651 A

  In the conventional dishwasher described above, when performing the drying process, there is a possibility that the drying process may be stopped after the set drying process time has elapsed although the drying of the object to be cleaned is insufficient. Was desired.

That is, in general, hot water from a hot water supply source such as a water supply is supplied to the dehumidifying section as hot water for dehumidification, but clogging of piping in the hot water supply path from the hot water supply source to the dehumidifying section There is a risk that the supply amount of dehumidified hot water supplied to the dehumidifying unit per unit time may be greatly reduced due to a decrease in the water pressure of the hot water supply source.
By the way, when bringing hot water for dehumidification into contact with the air in the cleaning space circulated by the ventilation means, hot water for dehumidification is often ejected from the spray nozzle in order to improve dehumidification efficiency. However, in this case, as one of the clogged pipes in the hot water supply channel, there is a clogging of the spray nozzle.

  And, if the supply amount per unit time of dehumidifying hot water supplied to the dehumidifying unit decreases, the dehumidification efficiency will decrease, so the supply amount per unit time of dehumidifying hot water supplied to the dehumidifying unit will greatly decrease As a result, the humidity of the air in the cleaning space circulated by the ventilation means does not drop appropriately, and as a result, there is a risk that the cleaning object will not be sufficiently dried even after the set drying processing time has elapsed. It was.

  The present invention has been made in view of the above circumstances, and its purpose is to appropriately dry the object to be cleaned even if the supply amount per unit time of dehumidifying hot water supplied to the dehumidifying section is reduced. It is in providing a dishwasher that can be performed.

The dishwasher of the present invention is a drainage pump that draws hot water from the bottom of the washing space of the washing tank and discharges it outside,
By cooling the air in the cleaning space circulated by the ventilation means through the ventilation path extending from the air suction port to the cleaning space and the air supply port to the cleaning space by contact with hot water for dehumidification, A dehumidifying part configured to condense and dehumidify moisture in the air, and to flow the dehumidified hot water and condensed water into the washing tank;
Heating means for heating the air in the cleaning space;
Hot water intermittent means for intermittently supplying hot water to the cleaning space and intermittently supplying hot water to the dehumidifying section;
A drainage discharge water level detection means for detecting that the level of hot water stored at the bottom of the washing space is a drainage discharge water level;
A cleaning unit that cleans an object to be cleaned in the cleaning space, a rinsing process for rinsing the object to be cleaned, and a control unit that executes a drying process for drying the object to be cleaned;
The control means is
In the drying treatment, the heating means, the heating means, and the air passing through the ventilation path are brought into contact with the hot water for dehumidification and the air passing through the ventilation path. A drainage for drying that controls hot water intermittent means and, when the drying discharge water level is detected by the drying discharge water level detection means, operates the drainage pump to discharge hot water at the drainage discharge water level. Configured to repeat driving, and
When the elapsed time from the start of the drying process reaches a set drying process time, the drying process is configured to stop, and the first characteristic configuration is
Reaching the water level until the drying discharge water level is detected again by the drying discharge water level detection means after the control means discharges the hot water stored at the bottom of the washing space in the drying drain operation. It is characterized in that it is configured to change and set the set drying processing time according to time.

That is, the control means measures the water level arrival time until the drying discharge water level is detected again by the drying discharge water level detection means after discharging hot water stored at the bottom of the cleaning space in the drying drain operation. Then, the set drying processing time is changed and set according to the water level arrival time.
In other words, the longer the water level arrival time, the smaller the supply amount of dehumidifying hot water supplied to the dehumidifying unit per unit time. The setting is changed so as to lengthen the processing time.

  In this way, by changing and setting the set drying processing time according to the water level arrival time, when the supply amount per unit time of dehumidifying hot water supplied to the dehumidifying unit is small, the set drying processing time can be lengthened. Therefore, even when the supply amount of dehumidifying hot water supplied to the dehumidifying unit per unit time is reduced, it is possible to appropriately dry the object to be dried.

  In short, according to the first characteristic configuration of the present invention, there is provided a dishwasher capable of appropriately drying an object to be cleaned even if the supply amount per unit time of dehumidifying hot water supplied to the dehumidifying unit is reduced. Can be provided.

The second feature configuration of the present invention is in addition to the first feature configuration described above.
If the water level arrival time is within a preset standard arrival time, the control means sets a preset standard processing time to the set drying processing time, and the water level arrival time is greater than the standard arrival time. If it is too long, a time obtained by multiplying the ratio of the water level arrival time and the standard arrival time by the standard treatment time is set as the set drying treatment time.

  That is, if the water level arrival time is within the preset standard arrival time, the control means will set the preset standard processing time to the set drying processing time, and the water level arrival time will be greater than the standard arrival time. If it is too long, the time obtained by multiplying the ratio of the water level arrival time and the standard arrival time by the standard processing time is set as the set drying processing time.

That is, if the water level arrival time is within a preset standard arrival time, the supply amount per unit time of dehumidifying hot water supplied to the dehumidifying unit is appropriate, and the preset standard processing time is set to the set drying processing time. Set to.
And when the water level arrival time is longer than the standard arrival time, the unit time of dehumidified hot water supplied to the dehumidifying part due to clogging of piping in the hot water supply path from the hot water supply source to the dehumidifying part, decrease in tap water pressure, etc. Assuming that the supply amount per unit is insufficient, the time obtained by multiplying the ratio of the water level arrival time and the standard arrival time by the standard processing time is set as the set drying processing time.

  Thus, when the water level arrival time is longer than the standard arrival time, the time obtained by multiplying the standard processing time by the ratio of the water level arrival time and the standard arrival time is set as the set drying processing time. As the amount of dehumidified hot water supplied to the dehumidifying unit per unit time decreases, the set drying treatment time can be set longer, so the amount of dehumidified hot water supplied to the dehumidifying unit per unit time decreases. In this state, it is possible to appropriately dry the object to be dried regardless of the amount of decrease.

  In short, according to the second characteristic configuration of the present invention, in addition to the operational effects of the first characteristic configuration, in the state where the supply amount per unit time of dehumidifying hot water supplied to the dehumidifying unit is decreasing, the decrease It is possible to provide a dishwasher capable of appropriately drying an object to be cleaned regardless of the amount.

In addition to the first or second feature configuration described above, the third feature configuration of the present invention includes:
The control means is configured to execute a notification process for notifying that maintenance is required when the water level arrival time is longer than a preset abnormality determination time.

That is, when the water level arrival time is longer than the preset abnormality determination time, the control means performs notification processing to notify that maintenance is necessary.
In other words, the maintenance time is determined by setting the time corresponding to when the supply amount per unit time of dehumidifying hot water supplied to the dehumidifying unit is abnormally reduced to the level that requires maintenance as the abnormality determination time. Can be performed appropriately.

  In short, according to the third characteristic configuration of the present invention, it is possible to provide a dishwasher capable of appropriately performing maintenance in addition to the operational effects of the first or second characteristic configuration described above.

In addition to any of the first to third feature configurations described above, the fourth feature configuration of the present invention includes:
A cleaning water level detecting means for detecting that the level of hot water stored in the cleaning space is a cleaning water level higher than the drying discharge water level is provided,
The control means is
In the cleaning process and the rinsing process, the hot water intermittent means is controlled to store the hot water at the cleaning water level in the cleaning space for cleaning and rinsing, and after the cleaning process and the rinsing process And in order to discharge the hot water stored in the cleaning space, the cleaning drain operation for operating the drain pump is executed, and
In the cleaning process and the rinsing process, when the hot water of the cleaning water level is stored in the cleaning space, the cleaning water level detection is performed without the drying discharge water level detecting means detecting the drying water level. When the means detects the cleaning water level, it is determined that the drying discharge water level detecting means is in an abnormal failure state, and in the drying process after determining the failure state, the drying drainage After the operation, the drain pump is operated to discharge hot water stored in the bottom of the cleaning space, and when the set failure interval time has elapsed, the drain pump is made to operate again, and the bottom of the cleaning space The hot water stored in is discharged in the form of discharging, and the set failure operation time is set to the set drying processing time.

  That is, the control means stores the hot water at the cleaning water level in the cleaning space, performs cleaning and rinsing, and stores the cleaning water in the cleaning space after the cleaning processing and the rinsing processing. In order to discharge the hot and cold water, a drainage operation for washing that operates a drainage pump is performed.

  Further, when the control means stores hot water at the cleaning water level in the cleaning space in the cleaning process and the rinsing process, the cleaning discharge water level detection means does not detect the drying discharge water level, and the cleaning water level detection means When the cleaning water level is detected, it is determined that the drying discharge water level detection means is in an abnormal failure state.

  Then, when it is determined that the drying discharge water level detecting means is in an abnormal failure state, the control means performs the cleaning operation by operating the drainage pump in the drying process after determining the failure state. After discharging hot water stored at the bottom of the cleaning space, when the set failure interval time elapses, the drain pump is operated again, and the hot water stored at the bottom of the cleaning space is discharged. In addition, when the set failure operation time is set to the set drying process time and the set failure operation time has elapsed, the drying process is stopped.

  In this way, when it is determined that the drying discharge water level detection means is in an abnormal failure state, the drying drain operation operates the drain pump to discharge hot water stored at the bottom of the cleaning space. After that, when the set failure interval time elapses, the drain pump is operated again, and the hot water stored in the bottom of the cleaning space is discharged, and the set drying processing time is set as the set failure processing time. Since the operation time is set, the drying process can be continuously executed even in a failure state in which the drying discharge water level detecting means is abnormal, so that the usability can be improved.

  By the way, when it is determined that the drying discharge water level detection means is in an abnormal failure state, a notification process for prompting maintenance for inspecting and repairing the drying discharge water level detection means is performed, and the drying discharge water level detection means is set to a normal state. It will be made to return to a state.

  In short, according to the fourth feature configuration of the present invention, in addition to the operational effects of the first to third feature configurations described above, the drying process can be executed in a failure state in which the drying discharge water level detecting means is abnormal. Thus, it is possible to provide a dishwasher that can improve usability.

In addition to the fourth feature configuration described above, the fifth feature configuration of the present invention includes:
The control means is
In the cleaning process and the rinsing process, when the hot water at the cleaning water level is stored in the cleaning space, the cleaning water level detection means is detected after the drying discharge water level detection means detects the drying discharge water level. When the cleaning water level is detected, the water level arrival time measured in the subsequent drying process is stored as a normal water level arrival time, and the normal water level arrival time is set as the set failure interval time. It is characterized by being configured to be set to.

  That is, when the control means stores the hot water of the cleaning water level in the cleaning space in the cleaning process and the rinsing process, the cleaning water level detection means is detected after the drying discharge water level detection means detects the drying discharge water level. When the cleaning water level is detected, the water level arrival time measured in the subsequent drying process is stored as the normal time water level arrival time.

When it is determined that the drying discharge water level detecting means is in an abnormal failure state, the control means sets the stored normal time water level arrival time for operating the drain pump in the drying drainage operation. Will be set to the interval time.
In other words, after the drainage operation for drying when it is determined that the drying discharge water level detecting means is in an abnormal failure state, the drainage pump is operated and the hot water stored at the bottom of the cleaning space is discharged. When the normal water level arrival time has elapsed, the drain pump is operated again, and the hot water stored in the bottom of the cleaning space is discharged.

  The normal water level arrival time is determined by the drying drain level detection means after draining hot water stored at the bottom of the washing space in the drying drainage operation when the drying discharge level detection means is normal. Since it corresponds to the water level arrival time until the discharge water level is detected again, by setting the normal time water level arrival time as the set failure interval time, the drain pump is operated and the bottom of the washing space After draining the hot water stored in the washing space, the drainage pump can be operated again when the hot water at the drying water level is stored at the bottom of the cleaning space. The drainage pump can be appropriately operated at an appropriate timing for each time point when the hot water is stored.

  In short, according to the fifth characteristic configuration of the present invention, in addition to the operational effects of the fourth characteristic configuration described above, in the failure state where the drying discharge water level detecting means is abnormal, the drying discharge water level is set at the bottom of the cleaning space. It is possible to provide a dishwasher capable of appropriately operating a drain pump at an appropriate timing for each time when hot water is stored.

The sixth feature configuration of the present invention is in addition to the fourth feature configuration described above,
The control means is
In the cleaning process and the rinsing process, the elapsed time until hot water at the cleaning water level is stored in the cleaning space is stored as a storage time, and the ratio between the storage time and a preset standard storage time is The present invention is characterized in that a time obtained by multiplying a preset standard interval time is set as the set failure interval time.

That is, in the cleaning process and the rinsing process, the control means stores the elapsed time until the hot water at the cleaning water level is stored in the cleaning space as the storage time.
When it is determined that the drying discharge water level detection means is in an abnormal failure state, the control means sets the ratio between the stored storage time and the preset standard storage time to the preset standard interval time. The multiplied time is set to the set failure interval time for operating the drainage pump in the drying drainage operation.

  That is, when the water pressure of a hot water supply source such as a water supply for supplying hot water to the cleaning space or the dehumidifying part is a standard pressure as the standard storage time, the hot water at the cleaning water level is washed in the cleaning space in the cleaning process and the rinsing process. In the drying operation when the water pressure of the hot water supply source such as a water supply for supplying hot water to the cleaning space or dehumidifying part is a standard pressure as the standard interval time After the hot water stored at the bottom of the cleaning space is discharged, the elapsed time until the hot water at the drainage discharge water level is stored again at the bottom of the cleaning space is memorized. The time obtained by multiplying the ratio between the storage time and the preset standard storage time by the preset standard interval time is after the hot water stored at the bottom of the cleaning space is discharged in the drying operation. Again, the elapsed time until hot water at the drainage level for drying is stored in the bottom of the cleaning space, and the progress of the state in accordance with the current pressure of the hot water supply source that supplies hot water to the cleaning space and dehumidifying section The time is equivalent to time.

  Therefore, the time obtained by multiplying the ratio between the stored storage time and the preset standard storage time by the preset standard interval time is set as the set failure interval time for operating the drain pump in the drainage drain operation. By setting, in the failure state where the drying discharge water level detection means is abnormal, the drying discharge water level at the bottom of the cleaning space is not affected by fluctuations in the water pressure of the hot water supply source that supplies hot water to the cleaning space and the dehumidification section. The drainage pump can be appropriately operated at an appropriate timing for each time when hot water is predicted to be stored.

  In short, according to the sixth characteristic configuration of the present invention, hot water is supplied to the cleaning space and the dehumidifying section in the failure state where the drying discharge water level detecting means is abnormal in addition to the operational effects of the fourth characteristic configuration described above. Regardless of fluctuations in the water pressure of the hot water supply source, the drainage pump can be appropriately operated at an appropriate timing for each time when it is predicted that hot water of the discharge water level for drying will be stored at the bottom of the cleaning space. A dishwasher can be provided.

In addition to any of the above fourth to sixth feature configurations, the seventh feature configuration of the present invention includes:
The control means is
In the cleaning process and the rinsing process, when the hot water at the cleaning water level is stored in the cleaning space, the cleaning water level detection means is detected after the drying discharge water level detection means detects the drying discharge water level. When the water level for washing is detected, the water level arrival time measured in the subsequent drying process is stored as a normal water level arrival time, and the normal water level arrival time and a preset standard water level arrival time are stored. The time obtained by multiplying the ratio by the standard processing time set in advance is set as the set drying processing time as the set failure operation time.

  That is, when the control means stores the hot water of the cleaning water level in the cleaning space in the cleaning process and the rinsing process, the cleaning water level detection means is detected after the drying discharge water level detection means detects the drying discharge water level. When the cleaning water level is detected, the water level arrival time measured in the subsequent drying process is stored as the normal time water level arrival time.

  When it is determined that the drying discharge water level detection means is in an abnormal failure state, the control means preset the ratio of the stored normal time water level arrival time and the preset standard water level arrival time. The time obtained by multiplying the standard processing time is set as the set drying processing time as the set failure operation time.

  In other words, as the standard water level arrival time, in the drying process when the water pressure of the hot water supply source such as the water supply that supplies hot water to the cleaning space or dehumidifying section is a standard pressure, the bottom of the cleaning space in the drainage operation for drying. After the stored hot water is discharged, a time corresponding to the water level arrival time until the drying discharge water level is detected again by the drying discharge water level detection means is determined. If the time required for drying the object to be cleaned is determined in the drying process when the water pressure of the hot water supply source such as a water supply for supplying hot water to the dehumidifying part is a standard pressure, it is stored. The time obtained by multiplying the ratio of the normal water level arrival time and the preset standard water level arrival time by the preset standard processing time is the current pressure of the hot water supply source that supplies hot water to the cleaning space and dehumidifying section. Combined The time corresponding to between.

  Therefore, the time obtained by multiplying the ratio between the stored normal water level arrival time and the preset standard water level arrival time by the preset standard processing time is set as the set failure operation time in the set drying processing time. By setting, it is possible to properly dry the object to be cleaned regardless of fluctuations in the water pressure of the hot water supply source that supplies hot water to the cleaning space or the dehumidifying part in a failure state where the discharge water level detection means for drying is abnormal. The predicted set drying processing time can be set.

  In short, according to the seventh feature configuration of the present invention, in addition to the operational effects of any of the fourth to sixth feature configurations described above, the cleaning space and the dehumidification in the failure state in which the drying discharge water level detection means is abnormal. It is possible to provide a dishwasher that can appropriately dry an object to be cleaned regardless of fluctuations in the water pressure of a hot water supply source that supplies hot water to the section.

Perspective view of dishwasher Notched side view with the cleaning tank stored Schematic diagram of dishwasher Schematic perspective view showing the flow state of drying air Notched perspective view of water level detection sensor Longitudinal side view of detection state of hot water discharge water level Longitudinal side view of cleaning water level detection state Vertical side view of abnormal water level detection Block diagram showing control configuration Flow chart showing control operation Flow chart showing control operation Flow chart showing control operation Flow chart showing control operation

Embodiment
Next, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1 and FIG. 2, a main body portion 1 is provided as a main body case portion having an open front portion, and a drawer portion 2 having a cleaning tank D having a square shape in plan view is provided on the main body portion 1. On the other hand, the drawer-type dishwasher as an example of the dishwasher is provided so that it can be pulled out and stored along the horizontal direction.
Although not illustrated, a slide-type rail mechanism is provided that supports the drawer portion 2 so as to be movable with respect to the main body portion 1, and the drawer portion 2 exposes most of the main body portion 1 to the outside. It is configured so that it can be pulled out to the state.

The inner lid 3 that closes the upper surface of the cleaning tank D when the drawer 2 is housed in the main body 1 opens the upper surface of the cleaning tank D when the drawer 2 is pulled out from the main body 1. Thus, it is provided in a form that is automatically opened and closed as the drawer part 2 is pulled out and stored, and an openable and closable cleaning space Q is configured in the internal space of the cleaning tank D.
As shown in FIG. 2, a drain pan 14 for receiving water leakage is provided at the bottom of the main body 1. Although not illustrated, the presence or absence of water received and collected by the drain pan 14 is detected. It will be equipped with a leak sensor.

The front part of the drawer part 2 is provided with a door body A that opens and closes the opening of the front part of the main body part 1, and the door body A is gripped when the drawer part 2 is pulled out from the main body part 1 or stored. A holding part B is provided. Although not described in detail, an engaging means P that engages with the engaging portion Pa of the main body 1 as the drawer 2 is housed in the main body 1 is provided at the inner side portion of the grip B. When the engaging means P is engaged with the engaging portion Pa, the drawer portion 2 is held in the state of being housed in the main body portion 1. Then, the engaging means P can be operated in a released state in which the engagement is released with the fingers supporting the gripping part B when the drawer part 2 is pulled out from the main body part 1.
Further, the door body A is provided with an operation unit SS for performing various operations for driving.

As shown in FIG. 3, a water supply channel 4A connected to a hot water supply source such as a water supply, a washing tank branch channel 4B branched from the water supply channel 4A, and a dehumidifying branch channel 4C branched from the water supply channel 4A Is provided.
The washing tank branch 4B is connected to a water supply port 5 (see FIG. 2) for supplying hot water for cleaning and rinsing into the washing space Q of the washing tank D. The dehumidifying branch 4C is connected to the washing tank D. It is connected to a dehumidifying part G, which will be described later, provided on the front side wall Df.

  The first on-off valve V1 that opens and closes the water supply passage 4A, the second on-off valve V2 that opens and closes the washing tank branch 4B, and the dehumidifying branch 4C are equipped with the first on-off valve V1 and the second on-off valve. A constant flow valve V3 that restricts the flow rate of hot water flowing through the dehumidification branch 4C to be smaller than the flow rate of hot water flowing through the washing tank branch 4B in the open state of the valve V2. Hot water / interrupting means E, which is provided and performs intermittent connection of hot water supply to the water supply port 5 and intermittent supply of hot water to the dehumidifying part G from the first open / close valve V1, the second open / close valve V2, and the constant flow valve V3. Is configured.

That is, when hot water is supplied to the cleaning space Q, the first on-off valve V1 and the second on-off valve V2 are opened, and when hot water is supplied only to the dehumidifying section G, the first on-off valve V1 is opened. As a result, the second on-off valve V2 is closed.
The first on-off valve V1 has a flow rate of hot water flowing through the washing tank branch 4B sufficiently higher than a flow rate of hot water flowing through the dehumidification branch 4C (for example, 200 ml / min). Although the flow rate is large, a constant flow valve V4 that restricts the flow rate from being excessive is provided so as to be integrated.

  In addition, a first on-off valve V1, a second on-off valve V2, and a constant flow valve V3 are arranged at the back side portion of the main body 1, and the second on-off valve V2 and the water supply port 5 in the washing tank branch 4B. Are connected by a flexible hose R1, and a portion connecting the constant flow valve V3 and the dehumidifying part G in the dehumidifying branch 4C is formed by a flexible hose R2.

  Moreover, as shown in FIG.2 and FIG.3, under the bottom part of the washing tank D in the drawer | drawing-out part 2, the combined use pump 6 which functions as a washing pump by forward rotation and functions as a drainage pump by reverse rotation is provided. Inside the cleaning space Q of the cleaning tank D, a cleaning nozzle 8 and an electric heater 9 as a heating means are arranged, and a cleaning basket 10 for storing and placing an object to be cleaned such as tableware, The cleaning tank D is detachably mounted inside.

The dual-purpose pump 6 is connected to a water storage recess S formed at the bottom of the cleaning tank D by a suction pipe 11, and the dual-purpose pump 6 is connected to a drain pipe 12.
That is, in the forward rotation state, the dual-purpose pump 6 pumps hot water stored in the bottom of the cleaning space Q to the cleaning nozzle 8 and jets hot water from the cleaning nozzle 8. In the reverse rotation state, The hot water stored in the cleaning space Q is discharged to the outside through the drain pipe 12.

The drain pipe 12 is equipped in a state extending to the back part of the drawer part 2, and the tip part of the drain pipe 12 is connected to the drain trap 12B disposed at the back part side of the main body part 1 by a drain hose 12A. The external connection hose 12C is connected to the drain trap 12B.
Therefore, the external connection hose 12C is connected to the drain pipe of the installation location equipped in the location where the dishwasher is installed, so that hot water in the cleaning space Q can be drained to the outside.
In addition, when the drain pipe of an installation location is deployed at a low position, the external connection hose 12C is arranged in a posture extending in the horizontal direction, but the drain pipe of the installation location is deployed at a high position. In this case, the external connection hose 12C is disposed in a posture that extends upward.

Moreover, as shown in FIG. 3, the water level detection sensor J is connected to the recessed part S for water storage via the guide tube 13 as a communicating path.
As will be described later, the water level detection sensor J stores that the level of hot water stored in the cleaning space Q of the cleaning tank D is the cleaning water level Y2 (see FIG. 7), and stores in the cleaning space Q of the cleaning tank D. The level of the hot water to be discharged is equivalent to a state in which most of the hot water has been discharged from the cleaning space Q, and is a hot water discharge water level Y1a (see FIG. 6) that is low enough to expose the heater 9. The hot water stored in the cleaning water level Y3 (see FIG. 8) is higher than the cleaning water level Y2, and the level of the hot water stored in the cleaning space Q of the cleaning tank D is the hot water discharge water level Y1a. The discharge water level Y1b for drying (see FIG. 6), which is a little higher than that and low enough to expose the heater 9, is configured to be detected.

  That is, the water level detection sensor J is stored in the cleaning space Q of the cleaning tank D and the cleaning water level detecting means for detecting that the level of the hot water stored in the cleaning space Q of the cleaning tank D is the cleaning water level Y2. The hot water discharge water level detecting means for detecting that the level of the hot water to be discharged is lower than the cleaning water level Y2, and the level of the hot water stored in the cleaning space Q of the cleaning tank D is higher than the cleaning water level Y2. And a discharge water level detection means for detecting that the discharge water level Y1b is slightly higher than the hot water discharge water level Y1a, and the level of the hot water stored in the cleaning space Q of the cleaning tank D is an abnormal water level Y3. Thus, each of the abnormal water level detection means for detecting that is configured.

  In this embodiment, when the cleaning level Y2 is detected by the water level detection sensor J, 2.4 L (liter) of hot water is stored in the cleaning space Q, and hot water is discharged from that state. When the discharged water level Y1a is detected by the water level detection sensor J, hot water corresponding to 0.9 L (liter) remains in the cleaning space Q (stored).

As shown in FIGS. 2 and 3, a drying unit K is attached to the front side wall portion Df of the cleaning tank D.
That is, as shown in FIG. 4, the air supply port 21 that supplies the air from the drying unit K to the cleaning space Q and the drying unit K suck the air in the cleaning space Q into the front side wall portion Df. The air suction port 22 is formed at a position corresponding to the lower side of the cleaning space Q and at positions separated on both the left and right sides. Specifically, the air supply port 21 and the air suction port 22 are formed so as to be positioned below the cleaning basket 10 and above the above-described water storage recess S, and in this embodiment, Has the air supply port 21 on the right side and the air suction port 22 on the left side.

As shown in FIG. 3, the drying unit K has a cleaning space Q through a ventilation path F extending between the air suction port 22 and the air supply port 21 inside the casing 20 fixed to the front side wall portion Df of the cleaning tank D. The circulation fan 23 as a ventilation means for circulating the air and the above-mentioned dehumidifying part G for dehumidifying the air circulated through the ventilation path F are provided.
The ventilation path F has an inverted U-shape composed of an ascending path part f1 extending upward from the air suction port 22 and a descending path part f2 extending downward from the upper end of the ascending path part f1 toward the air supply port 21. The dehumidifying part G is disposed in the ascending path part f1, and the circulation fan 23 is disposed in the descending path part f2.

The dehumidifying part G includes a plurality of heat transfer plates 24 juxtaposed at intervals along the plate thickness direction and ejects hot water for dehumidification from the ejection nozzle 25 toward the heat transfer plates 24. The air flowing upward through the heat transfer plates 24 is cooled by contact with dehumidification water flowing down the surface of the heat transfer plate 24 and contact with dehumidification water flowing down between the heat transfer plates 24. Thus, the moisture in the air is condensed and dehumidified.
The dehumidified hot water and condensed hot water ejected from the ejection nozzle 25 flow into the cleaning space Q of the cleaning tank D through the air suction port 22 and are stored in the water storage recess S.

  Then, in a state where the electric heater 9 is heated, the circulation fan 23 is ventilated and hot water for dehumidification is ejected from the ejection nozzle 25, so that the air sucked from the cleaning space Q is supplied to the dehumidifying part G. After the dehumidification, the drying air is supplied to the cleaning space Q as drying air, and the supplied air is heated by the electric heater 9 to dry the cleaning object in the cleaning space Q. It is configured to do so.

  Further, the odor in the air sucked from the cleaning space Q is obtained by performing the ventilation operation of the circulation fan 23 and the ejection operation of hot water for dehumidification from the ejection nozzle 25 with the electric heater 9 stopped. The components are absorbed in dehumidifying water by the dehumidifying unit G and then supplied to the cleaning space Q so that a deodorizing operation for deodorizing the cleaning space Q can be performed.

The air flow in the drying operation will be described. As shown in FIG. 4, the air supplied to the cleaning space Q from the air supply port 21 formed in the front side wall portion Df of the cleaning tank D rises as the main flow. Then, it flows toward the back side, and then flows while moving downward toward the air suction port 22 formed on the lower side of the front side wall portion Df and at a position separated from the air supply port 21 in the left-right direction. Thus, the air flows in a form discharged from the air suction port 22, and the air easily flows to the lower portion of the cleaning tank where the air suction port 22 is located.
Therefore, it is possible to shorten the drying time by allowing air to flow through the entire cleaning object in the cleaning tank and drying the cleaning object efficiently.

As shown in FIG. 3, the drawer unit 2 is equipped with a control unit H as a control means for controlling the operation.
Then, as shown in FIG. 9, the control unit H, based on a command input from the operation unit SS, a DC motor 6 a that drives the dual-purpose pump 6, an electric heater 9, a circulation fan 23, and The operation of the hot water intermittent means E is controlled to perform a cleaning operation as a cleaning process for cleaning the cleaning object in the cleaning space Q formed inside the cleaning tank D, and a rinsing process for rinsing the cleaning object. From the rinsing operation, the drainage operation as a drainage treatment for draining hot water stored in the cleaning space Q of the cleaning tank D, the ventilation operation of the circulation fan 23 and the ejection nozzle 25 in a state where the electric heater 9 is heated. The drying operation as a drying process for performing the dehumidifying hot water jetting operation and the electric heater 9 being stopped, the ventilation operation of the circulation fan 23 and the dehumidifying hot water from the jet nozzle 25 It is configured to perform deodorization operation of a deodorizing process to perform an outgoing operation.

In FIG. 9, 6A is a DC motor drive circuit that adjusts the drive voltage applied to the DC motor 6a that drives the dual-purpose pump 6, and commands the control unit H to determine the direction of the drive voltage applied to the DC motor 6a. The drive voltage applied to the DC motor 6a is adjusted to the command voltage commanded from the control unit H.
That is, the DC motor driving circuit 6A switches the driving voltage applied to the DC motor 6a to drive the DC motor 6a in the normal rotation or reverse rotation state, and in each of the normal rotation driving state and the reverse rotation driving state. The rotational speed of the dual-purpose pump 6 can be changed by adjusting the magnitude of the drive voltage applied to the DC motor 6a.

  In the present embodiment, the control unit H controls the dual-purpose pump 6 at the target rotational speed based on the detection information of the rotational speed sensor M as the rotational speed detecting means for detecting the rotational speed of the dual-purpose pump 6. Rotation speed adjustment processing (hereinafter abbreviated as FB control) in which a drive voltage supplied to the DC motor 6a is obtained by proportional-integral control and the DC motor drive circuit 6A is commanded using the drive voltage as a command voltage to drive in reverse and reverse. ) Is configured to perform.

In FIG. 9, L1 is an alarm lamp provided in the operation unit SS, L2 is an alarm buzzer built in the operation unit SS, and L3 is a display unit provided in the operation unit SS. The buzzer L2 and the display unit L3 function as an alarm means L that operates when an abnormality occurs. Incidentally, a code corresponding to the content of the abnormality that has occurred is displayed on the display unit L3.
In FIG. 9, N is a storage switch that detects that the drawer 2 is stored in the storage position of the main body 1, 9 A is a drive circuit for the heater 9, and 23 A is a drive voltage for the circulation fan 23. It is the drive fan drive circuit to adjust.

Next, the operation performed by the control unit H will be described.
The operation unit SS is configured to select various operation courses such as a continuous operation course in which the washing operation, the rinsing operation, the drying operation, and the deodorizing operation are sequentially performed, and a drying only course in which only the drying operation is performed. The standard driving course, the careful driving course, the speedy driving course, and the rapid driving course can be selected as the continuous driving course. In the present embodiment, only the standard driving course of the continuous course will be described.

The control operation of the control unit H will be described based on the flowchart of FIG.
First, the storage switch N detects that the drawer 2 is stored in the storage position of the main body 1 (# 1), the power switch of the operation unit SS is turned on (# 2), and the driving course is selected. When the start switch of the operation unit SS is turned on (# 4), the selected driving course is executed.

Hereinafter, the description will be continued assuming that the standard operation course of the continuous course is selected and the start switch of the operation unit SS is turned ON.
After the operation unit SS start switch is turned ON, first, the cleaning operation (# 5) and the drainage operation (# 6) after the cleaning operation are executed, and then the rinsing operation (# 7) and the rinsing operation. The subsequent drain operation (# 8) is executed. Then, it is determined whether or not the rinsing operation has been completed twice (# 9). If the rinsing operation has not been completed twice, the rinsing operation (# 7) and the drain operation (# 8) after the rinsing operation are performed. Will be executed again.

  If it is determined in # 9 that the rinsing operation has been completed twice, the heating rinsing operation (# 10) and the drainage operation (# 11) after the heating rinsing operation are performed, followed by the drying operation (# 12). ) And deodorizing operation (# 13) are sequentially executed.

  In the washing operation, first, the first on-off valve V1 and the second on-off valve V2 are opened, and hot water is supplied into the washing space Q from the water supply port 5 through the water supply passage 4A and the washing tank branch passage 4B. Then, hot water is supplied to the dehumidifying part G through the dehumidifying branch 4C, and hot water is supplied from the dehumidifying part G into the cleaning space Q through the air suction port 22. When the water level detection sensor J detects that the water level in the cleaning space Q has reached the cleaning water level Y2, the first on-off valve V1 and the second on-off valve V2 are closed to supply hot water to the cleaning space Q. Stop supplying.

Thereafter, the combined operation of the combined pump 6 and the heater 9 is performed, and the cleaning operation of spraying the cleaning water from the cleaning nozzle 8 toward the object to be cleaned is continued until the set cleaning operation time elapses. Will do.
In addition, before the user turns on the start switch of the operation unit SS, the cleaning detergent can be put into the cleaning tank D to perform cleaning using the detergent.

  In the drainage operation after the cleaning operation, the dual-purpose pump 6 is reversely operated to start the draining operation for draining hot water in the cleaning tank D, and then until the set time for cleaning drainage (for example, 30 seconds) elapses. The drainage operation will be continued.

In the rinsing operation, when hot water is supplied to the cleaning space Q and the cleaning water level Y2 is detected by the water level detection sensor J, the supply of hot water is stopped as in the above-described cleaning operation.
Thereafter, the combined pump 6 and the heater 9 are operated, and the rinsing operation that rinses the object to be cleaned with the rinsing water heated by the heater 9 is performed until the set rinsing operation time elapses. Become.

  In the drainage operation after the rinsing operation, the drainage operation in which the dual-purpose pump 6 is reversely operated to drain the hot water in the cleaning tank D in the same manner as the drainage operation after the cleaning operation is performed for a set time for cleaning drainage (for example, 30 Until the second) elapses.

In the heating rinse operation, when hot water is supplied to the cleaning space Q and the cleaning water level Y2 is detected by the water level detection sensor J, the hot water supply is stopped as in the above-described cleaning operation.
Thereafter, the dual-purpose pump 6 and the heater 9 are operated to perform a rinsing operation for rinsing the object to be cleaned with the rinsing water heated by the heater 9, and the temperature sensor (not shown) When the temperature of the rinsing water reaches the set temperature for finishing (for example, 67 ° C.), the heating rinsing operation is finished.

  The drainage operation after the heating rinse operation is continuously performed until the set time (for example, 30 seconds) for cleaning drainage elapses by operating the dual-purpose pump 6 in the reverse direction, similarly to the draining operation after the cleaning operation. become.

  Incidentally, in the following description, the drain operation after the cleaning operation, the drain operation after the rinse operation, and the drain operation after the heating rinse operation are referred to as a cleaning drain operation.

In the drying operation, with the electric heater 9 heated, the circulation fan 23 is ventilated and the dehumidifying hot water is ejected from the ejection nozzle 25, and the state is set and dried. Continue until time (eg, 25 minutes) has elapsed.
During the drying operation, when the water level detection sensor J detects the above-described drying discharge water level Y1b, the drying drainage operation is performed.
This drying drainage operation is performed until the set time (for example, 15 seconds) for drying drainage elapses, in which drainage is performed by reversely operating the dual-purpose pump 6.

  Incidentally, the set drying processing time may be changed and set as will be described later. If the water level detection sensor J fails to detect the drying discharge water level Y1b, the drying time will be set as described later. The drainage operation is repeatedly performed based on the set failure interval time.

In the deodorizing operation, with the electric heater 9 being stopped, the circulation fan 23 is ventilated and the ejection nozzle 25 is ejected with dehumidifying water. For example, it is performed until 15 minutes).
During the deodorizing operation, the deodorizing drainage operation is performed when the water level detection sensor J detects the discharge water level Y1b for drying, as in the case of the drying operation.
This deodorizing drainage operation is similar to the drying drainage operation, in which drainage operation is performed by reversely operating the dual-use pump 6 after the hot water discharge water level Y1a is detected by the water level detection sensor J. This is continuously performed until a set time (for example, 15 seconds) elapses.

  Incidentally, in the present embodiment, the deodorizing drainage operation is omitted when the water level detection sensor J fails to detect the drying discharge water level Y1b.

In the dishwasher of this embodiment, as shown in FIG.2 and FIG.3, the pressure adjustment means W which adjusts automatically so that the internal pressure of the washing space Q of the closed state may turn into an external pressure is provided.
That is, for example, in the cleaning process, when the electric heater 9 is heated, the temperature in the cleaning space Q becomes a considerably high temperature (for example, 67 ° C.). Thereafter, the washing water is discharged, and the rinsing water is supplied to the washing space Q for the rinsing process, and the rinsing water is ejected from the washing nozzle 8 by the operation of the combined pump 6. Is a low temperature (for example, 13 to 17 ° C.). For this reason, when low-temperature rinse water is ejected from the cleaning nozzle 8, the temperature in the cleaning space Q rapidly decreases, and as a result, a large amount of air in the cleaning space Q contracts rapidly, and cleaning is performed. In some cases, the internal pressure of the space Q tends to decrease greatly. In such a case, the internal pressure of the cleaning space Q is automatically adjusted to the external pressure by the action of the pressure adjusting means W.

The pressure adjusting means W communicates with the cleaning space Q in the cleaning tank D through the communication hole 32 (see FIG. 3) formed in the rear side wall DR of the cleaning tank D so as to adjust the pressure in the cleaning space Q. However, in this embodiment, a detailed description of the configuration is omitted.
In addition, although the condensed water may be generated in the pressure adjusting means W, the condensed water is configured to be collected in the cleaning tank D through the water level detection sensor J.

Next, the water level detection sensor J will be described with reference to FIGS.
The hot water storage tank 40 for detecting the water level in which the hot water in the cleaning tank D is introduced by the guide tube 13 described above, and the level of the hot water stored in the hot water storage tank 40 provided in the hot water storage tank 40. The float 41 for detecting the water level that moves up and down according to the position, the guide portion U that guides the shaft portion 41B that extends upward from the main body portion 41A of the float 41, and the upper portion of the hot water storage tank 40 are located above the upper end. Thus, a pair of first water level detection unit T1 and second water level detection unit T2 that detect the two vertical positions of the float 41 are provided.

  The hot water storage tank 40 is formed in a bottomed cylindrical shape having a quadrangular cross section, and at the bottom thereof, a connecting cylinder portion 40C to which the above-described guide tube 13 is connected is formed. And the upper opening is covered with the lid body 42 fitted on the upper part (see FIG. 5).

Incidentally, the upper end portion of the hot water storage tank 40 is provided with a washing water receiving portion 40A and a dew condensation water receiving portion 40B for receiving dew condensation water from the pressure adjusting means W in a protruding state outward, and a lid 42 is provided. In addition, the opening for connecting with the pressure adjusting means W is formed in the cover 42 so as to cover the storage portion 40A and the condensed water receiving portion 40B for receiving the washing water, and covering the condensed water receiving portion 40B in the lid body 42. Vk is formed.
The function of the washing water receiving unit 40A will be described later.

  The two up / down positions of the float 41 are an up / down position (see FIG. 7) for detecting the cleaning water level Y2 and an up / down position (see FIG. 6) for detecting the hot water discharge water level Y1a. Yes, the first water level detection unit T1 detects that the float 41 is located at the lift position for detecting the high-level washing water level Y2, and the second water level detection unit T2 detects the low-side hot water discharge water level Y1a. It is configured to detect that the float 41 is positioned at the lift position.

The first water level detection unit T1 and the second water level detection unit T2 are configured using a photo-interrupter type optical sensor, and the first water level detection unit T1 projects from the top of the lid body 42. The second water level detection portion T2 is attached to a second sensor attachment portion 42b protruding from the upper portion of the lid body 42.
5-8, in order to show the internal structure of the water level detection sensor J, some description of the hot water storage tank 40 and the cover body 42 is abbreviate | omitted. And since the 1st sensor attachment part 42a is a thing with which the description in the cover body 42 is abbreviate | omitted, it cannot show in figure, In FIG. 6, it is a 2 dot chain line (virtual line) Show.

Further, the above-described abnormal water level detecting electrode 43 for detecting the abnormal water level is located on the lid body 42 such that the upper end side is positioned above the lid body 42 and the lower end side protrudes into the hot water storage tank 40. Is provided.
That is, the electrode 43 for detecting an abnormal water level is washed in which the water level of the hot water storage tank 40 is detected by the first water level detection unit T1 on the high water level side of the first water level detection unit T1 and the second water level detection unit T2. The lid body 42 is equipped in a state of being conducted with hot water stored in the hot water storage tank 40 when the set amount becomes higher than the water level Y2 (see FIG. 8).

In the state where the shaft portion 41B of the float 41 is located at the elevated position on the low water level side among the plurality of elevated positions, that is, in the state positioned at the elevated position for detecting the hot water discharge water level Y1a, The upper end portion is formed to have a length that is positioned below the upper end of the hot water storage tank 40 (see FIGS. 5 and 6).
And the swing lever 44 provided with the to-be-detected part 44a detected in the 2nd water level detection part T2 of the low water level side among the 1st water level detection part T1 and the 2nd water level detection part T2 is the axis | shaft of the float 41 It is linked to the upper end of the part 41B and is provided in a state of swinging up and down.

In other words, the swing lever 44 is pivotally supported by the second sensor mounting portion 42b so as to swing up and down around the horizontal axis X, and one end side portion of the horizontal axis X is the above-described detected portion. The other end side portion of the horizontal axis X is formed in the linkage portion 44b with the shaft portion 41B.
The linkage portion 44b is formed in a bifurcated shape, and is configured such that the upper end of the shaft portion 41B is engaged with the linkage portion 44b.
That is, a pair of left and right plate-like bodies 41a project from the upper end portion of the shaft portion 41B and below the upper end, and a protrusion 41b for preventing the left and right ends from the upper end of the shaft portion 41B. It is formed in a state protruding in the same direction as the pair of plate-like bodies 41a.
The bifurcated linkage portion 44b of the swing lever 44 is inserted between the protrusion 41b for preventing detachment and the pair of left and right plate-like bodies 41a, and the upper end of the shaft portion 41B is a bifurcated linkage portion. 44b is configured to penetrate through 44b.

In the state where the float 41 is located at the elevated position on the high water level of the up and down positions, that is, in the state where the float 41 detects the cleaning water level Y2, the shaft portion 41B of the float 41 has hot water as its upper end. It is formed in a length that is positioned above the upper end of the storage tank 40 (see FIG. 7).
Of the pair of plate-like bodies 41a described above, one protruding toward the presence side of the first water level detection unit T1 is configured to function as a detected portion detected by the first water level detection unit T1. ing.

One of the pair of plate-like bodies 41a provided at the upper end of the shaft portion 41B is different from the one that functions as the detected portion detected by the first water level detecting portion T1. It is comprised as a guide groove which carries out engagement guidance over the whole raising / lowering range of 41 (refer FIG. 5).
In other words, a downwardly recessed portion 42A that protrudes downward from the upper end of the water storage tank in a state in which the lid 42 covering the upper opening of the hot water storage tank 40 becomes lower as the insertion portion of the shaft 41B of the float 41 becomes lower. In addition, the guide portion U is formed in a state including the recessed portion 42A in the lid body 42 and the upward projecting portion 42B of the lid body.

  In addition, although not illustrated, the plate-like body 41a that functions as the detected portion detected by the first water level detection unit T1 of the pair of plate-like bodies 41a is engaged along the ascending / descending direction of the float 41. Although an auxiliary guide groove for guiding is provided, this auxiliary guide groove exists up to the vicinity of the first water level detection unit T1, but a plate-like body 41a that functions as a detected portion is provided in the first water level detection unit T1. Therefore, the float 41 is not guided over the entire lifting / lowering range of the float 41.

Since the swing lever 44 is received on the upper surface of the lid 42 when swinging to a lower position corresponding to the hot water discharge water level Y1a, the water level detection sensor J of the present embodiment The lowest water level in the detection range corresponds to the hot water discharge water level Y1a.
For this reason, the water level detection sensor J of the present embodiment stores a little more hot water than the hot water discharge water level Y1a from the state where hot water less than the hot water discharge water level Y1a is stored at the bottom of the cleaning space Q, and discharges hot water. The change from the state in which the water level Y1a is detected to the state in which it is not detected corresponds to the state in which the discharge water level Y1b for drying is detected (see FIG. 6).

  In other words, in the case of the present embodiment, the controller H changes the hot water discharge level Y1b from the state in which the water level detection sensor J detects the hot water discharge water level Y1a to the state in which the hot water discharge water level Y1a is not detected. It is comprised so that it may discriminate | determine that was stored.

  Incidentally, in the case where the lowest water level in the detectable range of the water level detection sensor J is configured to be lower than the hot water discharge water level Y1a, the water level detection sensor J does not detect the hot water discharge water level Y1a. By changing to a state in which the discharge water level Y1a is detected, it is possible to detect that hot water of a water level corresponding to the drying discharge water level Y1b is stored at the bottom of the cleaning space Q. In this case, the hot water discharge water level Y1a and the drying discharge water level Y1b are the same water level.

  As described above, the water level detection sensor J is also used as the hot water storage tank 40 and the float 41, as described above, the cleaning water level detection means for detecting the cleaning water level Y2, and the hot water discharge water level detection for detecting the hot water discharge water level Y1a. The cleaning water level Y2 is a first water level detection unit, which constitutes each of the means, the drying water level detection means for detecting the drying water level Y1b, and the abnormal water level detection means for detecting the abnormal water level Y3. Since the detection is performed at T1, in the following description, the first water level detection unit T1 will be described as corresponding to the cleaning water level detection means, and the drying water level Y1b will be Since it is detected by the water level detection unit T2, in the following description, the second water level detection unit T2 will be described as equivalent to the drying discharge water level detection means.

When the above-described washing water receiving unit 40A is described, as shown in FIG. 3, when performing drainage operation such as washing drainage operation, a part of hot water flowing through the drainage pipe 12 passes through the branch pipe 12a. The branch pipe 12a is connected to a pipe connecting part 40a provided in the washing water receiving part 40A.
Accordingly, when a drainage operation is performed, a part of hot water drained by the dual-purpose pump 6 flows into the washing water receiving portion 40A and then discharged into the hot water storage tank 40, whereby the hot water storage tank 40 The wall surface can be cleaned.

  As described above, the dishwasher according to the present embodiment cleans and dries the object to be cleaned by performing the washing operation, the rinsing operation, the heating rinsing operation, the washing drain operation, the drying operation, and the deodorizing operation. However, in addition to the above-described configuration, the following configuration is provided.

That is, after the control unit H discharges hot water stored in the bottom of the cleaning space Q in the drying drain operation, the drying water level Y1b is detected again by the second water level detection unit T2 of the water level detection sensor J. The set drying processing time is changed and set according to the water level arrival time until the first time.
Specifically, if the water level arrival time is within a preset standard arrival time (for example, 5 minutes), the control unit H sets the preset standard processing time (for example, 25 minutes) as the set drying processing time. When the water level arrival time is longer than the standard arrival time, the time obtained by multiplying the standard processing time by the ratio between the water level arrival time and the standard arrival time is set as the set drying processing time. ing.

And when the control part H is longer than the preset abnormality determination time (for example, 10 minutes), it is comprised so that the alerting | reporting process which alert | reports that a maintenance is required is performed.
In this notification process, the alarm lamp L1 of the alarm means L described above is turned on and the alarm buzzer L2 is operated for a set short time. In addition, the water level arrival time is determined from the abnormality determination time on the display unit L3. An error code indicating that it is too long will be displayed.

Furthermore, in the present embodiment, when the control unit H stores hot water at the cleaning water level Y2 in the cleaning space Q in a cleaning operation as a cleaning process or a rinse operation and a heating rinse operation as a rinse process. In addition, when the first water level detection unit T1 of the water level detection sensor J detects the cleaning water level Y2 without the second water level detection unit T2 of the water level detection sensor J detecting the discharge water level Y1b for drying, the water level is detected. The second water level detection unit T2 of the sensor J is configured to determine that it is a failure state in which the drying discharge water level Y1b cannot be detected.
In the following description, the second water level detection unit T2 may be referred to as a drying discharge water level detection unit T2.

  When the failure state of the second water level detection unit, that is, the drying discharge water level detection unit T2, is described, in the present embodiment, the drying discharge water level detection unit T2 detects the hot water discharge water level Y1a as described above. The controller H is configured to determine that the hot water of the drying discharge water level Y1b has been stored by changing from the state to the state where the hot water discharge water level Y1a is not detected. When the discharge water level detection unit T2 changes from the light shielding detection state in which it is detected that the light is shielded by the swing lever 44 to the non-light-shielding state in which it is detected that the light is not shielded by the swing lever 44, It detects that the hot water of the discharged water level Y1b has been stored.

  Therefore, when hot water at the cleaning water level Y2 is stored in the cleaning space Q in the cleaning operation, the rinsing operation, and the heating rinsing operation, if the drying discharge water level detection unit T2 is not in the light-shielding detection state at the start time, drying is performed. It is determined that the discharge water level detection unit T2 is in a failure state, and even if the drying discharge water level detection unit T2 is in the light-shielding detection state at the start time, the first of the water level detection sensor J is thereafter detected. If the drying discharge water level detection unit T2 does not change from the light shielding detection state to the non-light shielding state before the water level detection unit T1 detects the cleaning water level Y2, it is determined that the drying discharge water level detection unit T2 is in a failure state. It will be.

Incidentally, the control unit H is configured not to execute the deodorizing operation as described above when the drying discharge water level detection unit T2 is determined to be in a failure state, and the drying level in the water level detection sensor J is determined. A notification process for notifying that the maintenance of the discharged water level detection unit T2 is necessary is performed.
In the notification process, the alarm lamp L1 of the alarm means L described above is turned on and the alarm buzzer L2 is set for a short time, similar to the notification process performed when the water level arrival time is longer than the preset abnormality determination time. In addition, an error code indicating that the drying discharge water level detection unit T2 in the water level detection sensor J is abnormal is displayed on the display unit L3.

  Then, in the drying operation after the control unit H has determined the failure state of the drying discharge water level detection unit T2 in the water level detection sensor J, the drainage operation for drying is reversed and the combined pump 6 is operated in reverse. After the hot water stored in the bottom is discharged, when the set failure interval time elapses, the dual-use pump 6 is operated again in reverse, and the hot water stored in the bottom of the cleaning space Q is discharged. In addition, the operation time for the set failure is set to the set drying processing time.

  Specifically, when the control unit H stores the hot water of the cleaning water level Y2 in the cleaning space Q in the cleaning operation as the cleaning process or the rinse operation and the heating rinse operation as the rinse process, After the drying water level detection unit (second water level detection unit) T2 of the detection sensor J detects the drying water level Y1b, the first water level detection unit T1 of the water level detection sensor J detects the cleaning water level Y2. Is configured to store the water level arrival time measured in the subsequent drying operation as the normal time water level arrival time and set the normal water level arrival time as the set failure interval time.

  Further, when the controller H stores the hot water of the cleaning water level Y2 in the cleaning space Q in the cleaning operation as the cleaning processing, the rinsing operation and the heating rinsing operation as the rinsing processing, the water level detection sensor J In the case where the first water level detection unit T1 of the water level detection sensor J detects the cleaning water level Y2 after the drying discharge water level detection unit (second water level detection unit) T2 detects the drying discharge water level Y1b, The water level arrival time measured in the drying operation is stored as a normal water level arrival time, and the ratio between the normal water level arrival time and a preset standard water level arrival time (for example, 5 minutes) is preset. The time obtained by multiplying the standard processing time (for example, 25 minutes) is set as the set drying processing time as the set failure operation time.

Hereinafter, the control operation of the cleaning operation of the control unit H will be described based on the flowchart of FIG.
First, hot water supply start processing for supplying hot water to the cleaning space Q is performed (# 21). In this hot water supply start process, as described above, the first on-off valve V1 and the second on-off valve V2 are opened, and hot water is supplied from the water supply port 5 into the cleaning space Q through the water supply passage 4A and the washing tank branch passage 4B. In addition to supplying hot water, hot water is supplied to the dehumidifying part G through the dehumidifying branch 4C, and hot water is supplied from the dehumidifying part G into the cleaning space Q through the air suction port 22.

Next, whether or not the discharge discharge water level detection unit (second water level detection unit) T2 of the water level detection sensor J has changed from the state of detecting the hot water discharge water level Y1a to the state of not detecting the hot water discharge water level Y1a, that is, It is determined whether or not the drying discharge water level detection unit (second water level detection unit) T2 has detected the drying discharge water level Y1b (# 22). If the drying discharge water level Y1b has not been detected, then Then, it is determined whether or not the first water level detection unit T1 of the water level detection sensor J has detected the cleaning water level Y2 (# 24).
If it is determined in # 24 that the cleaning water level Y2 is not detected, the process proceeds to determination in # 22.

If it is determined at # 24 that the cleaning discharge water level Y1b is detected before it is determined at # 22 that the cleaning water level Y2 is detected, the detection flag is turned ON. Is executed (# 23).
That is, if it is not determined at # 24 that the cleaning discharge water level Y1b is detected before it is determined at # 22 that the cleaning water level Y2 is detected, the detection flag is not turned ON. It will be.

  When it is determined at # 24 that the first water level detection unit T1 of the water level detection sensor J has detected the cleaning water level Y2, the first on-off valve V1 and the second on-off valve V2 are closed to the cleaning space Q. The hot water supply is stopped (# 25).

Next, it is determined whether or not the detection flag is ON. If the detection flag is not ON, an abnormality indicating that the drying discharge water level detection unit (second water level detection unit) T2 of the water level detection sensor J is malfunctioning. The process of turning on the flag (# 27) and the notification process (# 28) for notifying the failure are sequentially executed.
The notification process is a process for operating the alarm means L as described above, and a detailed description thereof is omitted here.

  When it is determined at # 26 that the detection flag is ON, or after the notification process at # 28 is executed, the dual-purpose pump 6 is driven forward at the target rotational speed, and the heater 9 is turned on. Driving is started (# 29). That is, the hot water for cleaning is ejected from the cleaning nozzle 8 while the hot water for cleaning is heated by the heater 9.

  Next, it is determined whether or not the elapsed time since the start of the cleaning operation has reached the set cleaning operation time, that is, whether or not the cleaning operation time has elapsed (# 30). If the time has elapsed, the dual-purpose pump 6 and the heater 9 are stopped (# 31), and then the process proceeds to the next process.

  As described above, in the cleaning operation, when the hot water of the cleaning water level Y2 is stored in the cleaning space Q, the drying discharge water level detection unit (second water level detection unit) T2 of the water level detection sensor J performs the drying discharge water level. If the first water level detection unit T1 of the water level detection sensor J detects the cleaning water level Y2 without detecting Y1b, the drying discharge water level detection unit (second water level detection unit) T2 performs the drying discharge water level Y1b. When the failure state is determined, a notification process for urging maintenance is performed.

  And, in the rinsing operation and the heating rinsing operation as the rinsing process, the failure determination and the notification process are performed as in the cleaning operation, but the content is the same as the failure determination and the notification process in the cleaning operation. The description is omitted in this document.

  Next, the control operation of the drying operation of the control unit H will be described based on the flowcharts of FIGS. 12 and 13.

First, a process of starting the operation of the heater 9 and the circulation fan 23 and starting the supply of dehumidified hot water is executed (# 41).
Next, it is determined whether or not the drying discharge water level detection unit (second water level detection unit) T2 of the water level detection sensor J is malfunctioning (# 42). This determination is made based on whether or not the detection flag described above is ON.

Depending on whether or not the discharge water level detection unit for drying (second water level detection unit) T2 is out of order, the processing content of the drying operation is largely divided into two. The processing contents when it is determined that it is not will be described.
That is, if it is determined in # 42 that there is no failure, it is then determined whether or not the dual-use pump 6 is in the operation of the drying drainage operation (# 43), and is not in the drying drainage operation. In this case, it is determined whether or not it is immediately after the drying drainage operation is finished (# 44).

If it is determined at # 44 that it is immediately after completion of the drying drain operation, measurement of the water level arrival time timer is started (# 45).
If it is determined at # 44 that it is not immediately after the drying drain operation is completed, or after the processing of # 45 is executed, the drying discharge water level detection unit (second water level detection unit) T2 of the water level detection sensor J is dried. It is determined whether or not the discharge water level Y1b has been detected (# 46).
That is, in the present embodiment, whether or not the discharge discharge water level detection unit (second water level detection unit) T2 of the water level detection sensor J has changed from a state in which the hot water discharge water level Y1a is detected to a state in which the hot water discharge water level Y1a is not detected. Is determined.

If it is determined at # 46 that the discharge water level for drying Y1b is not reached, it is determined whether or not the elapsed time since the start of the drying operation has passed the set drying processing time (# 57). When the drying processing time has elapsed, the heater 9, the circulation fan 23, and the dual-purpose pump 6 are stopped, and the supply of dehumidifying hot water is stopped (# 58), and the next operation is started. Will do.
If it is determined in # 57 that the set drying process time has not elapsed, the process proceeds to # 43.

If it is determined at # 46 that the discharge water level for drying is Y1b, it is determined whether or not the water level arrival time timer is in operation (# 47).
If it is determined in # 47 that the water level arrival time timer is not in operation, the reverse drive of the dual-purpose pump 6 is started at the target rotational speed (# 52), and the drying drainage operation is started. Will be.

If it is determined in # 47 that the water level arrival time timer is in operation, the measurement operation of the water level arrival time timer is stopped, and the measured value is stored in the washing space Q in the drainage operation for drying. After the hot water stored in the bottom of the water is discharged, the process of updating and storing the water level arrival time until the drying discharge water level detection unit (second water level detection unit) T2 detects the drying discharge water level Y1b again is performed. Executed (# 48)
By the way, the water level arrival time timer starts measurement when it is determined at # 44 that it is immediately after the end of the drying drainage operation. Subsequently, immediately after the drying operation is started, the measurement of the water level arrival time timer is not started at # 44.

After the process of # 48, the setting process of the set drying process time is executed (# 49).
In this setting process, if the water level arrival time is within a preset standard arrival time (for example, 5 minutes) as described above, the preset standard processing time (for example, 25 minutes) is set as the set drying processing time. When the water level arrival time is longer than the standard arrival time, a time obtained by multiplying the standard processing time by the ratio of the water level arrival time and the standard arrival time is set as the set drying processing time.

Subsequent to the process of # 49, it is determined whether or not the water level arrival time is longer than a preset abnormality determination time (for example, 10 minutes). If it is longer, the notification process is executed (# 51), and the next Then, the process proceeds to # 52, where the dual-purpose pump 6 is started to be driven in reverse at the target rotational speed.
The notification process of # 51 is a process for operating the alarm means L as described above, and a detailed description thereof is omitted here.

  After the dual-purpose pump 6 is driven in reverse at # 52, it is determined whether or not it has changed from the drying discharge water level Y1b (# 53). That is, in the case of the present embodiment, whether or not the drying discharge water level detection unit (second water level detection unit) T2 has changed from a state in which the hot water discharge water level Y1a is not detected to a state in which the hot water discharge water level Y1a is detected. Determined.

If it is determined at # 53 that the discharge water level has changed from the drying discharge water level Y1b, it is determined whether or not the elapsed time from that time has passed the set time for dry drainage (for example, 15 seconds). If the set time for dry drainage has elapsed (# 55), the dual-purpose pump 6 is stopped (# 56), and then the process proceeds to # 57.
If it is not determined in # 53 that the water level has changed from the drying discharge water level Y1b, the process proceeds to # 57.

If it is determined in # 43 that the drainage operation for drying is being performed, it is determined whether or not it has already been determined that the change has occurred from the drying discharge water level Y1b (# 54).
When it is determined that the water level has already changed from the drying discharge water level Y1b, the process proceeds to # 55, and when it is determined that the water level has not changed from the drying water level Y1b, the process proceeds to # 53. become.

The above description is the control operation in the case where it is determined in # 42 that the drying discharge water level detection unit (second water level detection unit) T2 is not in failure. Next, in # 42, the drying discharge water level detection is performed. The control operation when it is determined that the unit (second water level detection unit) T2 is faulty will be described.
That is, when it is determined at # 42 that the drying discharge water level detection unit (second water level detection unit) T2 is out of order, the setting failure interval time setting process (# 59) and the set drying process time are set. The setting process (# 60) is sequentially executed.

As described above, in the setting process of the set failure interval time of # 59, when the hot water of the cleaning water level Y2 is stored in the cleaning space Q in the cleaning operation, the rinsing operation, and the heating rinsing operation, the discharge water level for drying is detected. When the first water level detection unit T1 detects the cleaning water level Y2 after the unit (second water level detection unit) T2 detects the discharge water level Y1b for drying, the water level arrival time measured in the subsequent drying operation is determined. The normal water level arrival time is stored, and the normal water level arrival time is set to the set failure interval time. In the present embodiment, the water level updated and stored in the process of # 48 The arrival time is set to the set failure interval time as the normal time water level arrival time.
If the water level arrival time is not stored because it is immediately after installation of the dishwasher, a preset standard arrival time (for example, 5 minutes) is set as the set failure interval time. .

As described above, the set drying processing time setting process of # 60 is performed when the hot water of the cleaning water level Y2 is stored in the cleaning space Q in the cleaning operation, the rinsing operation, and the heating rinsing operation. (Second water level detection unit) After T2 detects the discharge discharge water level Y1b, when the first water level detection unit T1 detects the cleaning water level Y2, the water level arrival time measured in the subsequent drying operation is It is stored as a normal water level arrival time, and a ratio between the normal water level arrival time and a preset standard water level arrival time (for example, 5 minutes) is multiplied by a preset standard processing time (for example, 25 minutes). In this embodiment, the water level arrival time updated and stored in the process of # 48 is set as the normal time water level arrival. Time and It will be used.
If the water level arrival time is not stored because it is immediately after installation of the dishwasher, etc., the preset drying process is performed using the preset standard processing time (for example, 25 minutes) as the set failure operation time. Will be set to time.

After the setting process of # 59 and the setting process of # 60 are executed, it is determined whether or not the dual-use pump 6 is in the drainage operation for drying (# 61).
If the drying drain operation is not being performed, it is determined whether or not it is immediately after the start of the drying operation and whether or not it is immediately after the end of the drying drain operation (# 62, # 63),
When it is immediately after the start of the drying operation or immediately after the end of the drying drainage operation, the measurement operation of the interval time timer is started (# 64).

  In # 62 and # 63, if it is determined that it is not immediately after the start of the drying operation but not immediately after the drying drainage operation, or after the processing for starting the interval time timer is executed in # 64, the interval Based on the measured value of the time timer, it is determined whether the set failure interval time has elapsed (# 65).

If it is determined in # 65 that the set failure interval time has not elapsed, it is determined whether or not the elapsed time since the start of the drying operation has passed the set drying processing time (# 70). ) If the set drying process time has elapsed, the process proceeds to the process of # 58 to stop the operation of the heater 9, the circulation fan 23, and the dual-purpose pump 6, and stop the supply of dehumidifying hot water. After that, it will move to the next driving.
If it is determined at # 70 that the set drying process time has not elapsed, the process proceeds to # 61.

When it is determined at # 65 that the set failure interval time has elapsed, the dual-use pump 6 is started to reversely rotate at the target rotational speed (# 66), and the drying drainage operation is started. Is done.
Subsequently, the measurement operation of the drain operation timer is started (# 67), and then the process proceeds to # 70.

When it is determined in # 61 that the drainage operation for drying is in progress, whether or not a set time for dry drainage (for example, 15 seconds) has elapsed based on the measured value of the timer for drainage operation. Discriminated (# 68).
When it is determined at # 68 that the set time for dry drainage has elapsed, the combined pump 6 is stopped (# 69), and then the process proceeds to # 70, and at # 68. When it is determined that the set time for dry drainage has not elapsed, the process proceeds to # 70.

  As described above, when the discharge discharge water level detection unit (second water level detection unit) T2 of the water level detection sensor J is not out of order, the set drying processing time is changed and set based on the water level arrival time in the drying operation. In addition, when the drying discharge water level detection unit (second water level detection unit) T2 of the water level detection sensor J is in failure, the set failure interval time and the set failure operation time are set. Then, the drying operation is executed.

[Another embodiment]
In the above embodiment, when the controller H stores the hot water of the cleaning water level Y2 in the cleaning space Q, the water level detection sensor J detects the drying discharge water level Y1b, and then the water level detection sensor J detects the cleaning water level. When Y2 is detected, the water level arrival time measured in the subsequent drying operation is stored as a normal time water level arrival time, and the water level detection sensor J cannot detect the discharge water level Y1b for drying. In this example, the stored normal time water level arrival time is set to the set failure interval time. However, the set failure interval time may be set as follows.

That is, when the controller H stores hot water at the cleaning water level Y2 in the cleaning space Q in the cleaning process and the rinsing process, the elapsed time until the cleaning water level Y2 is detected by the water level detection sensor J is determined. Measure and store the measurement time as the storage time.
Then, a time obtained by multiplying the ratio between the storage time and the preset standard storage time by the preset standard interval time is obtained, and the time is set as the set failure interval time.
Since the control operation of the control unit H in this other embodiment can be understood by referring to the control operation of the above embodiment, the description thereof is omitted.

[Other alternative embodiments]
Next, another embodiment will be described.
(A) In the above embodiment, the hot and cold intermittent means includes a first on-off valve that opens and closes the water supply channel, a second on-off valve that opens and closes the branch for the cleaning tank, and a constant flow valve equipped in the dehumidification branch However, in addition to these valves, an opening / closing valve for opening / closing the dehumidifying branch may be provided.
And when providing the on-off valve which opens and closes the dehumidification branch path, you may implement by the form which abbreviate | omits the 1st on-off valve which opens and closes a water supply path.

(B) In the above embodiment, the drawer type dishwasher in which the cleaning tank is provided so as to be freely drawn out and stored in the horizontal direction with respect to the main body case part is illustrated, but the cleaning tank is stored in the main body case part. The present invention can also be applied to a dishwasher in which the washing space of the washing tub is opened and closed by opening and closing the front door of the main body case.

(C) In the above embodiment, the drain pump is driven by a DC motor, but the drain pump may be driven by an AC motor. In this case, for example, the cleaning pump is set to a target rotational speed. Therefore, the driving power supplied to the AC motor may be adjusted by phase control.

(D) In the above embodiment, a dual-purpose pump that functions as a cleaning pump in forward rotation and functions as a drainage pump in reverse rotation is illustrated. However, it may be implemented in a form in which a cleaning pump and a drainage pump are provided separately.

(E) In the above embodiment, the case where the drainage capacity is adjusted by adjusting the rotational speed is exemplified. For example, a variable capacity pump is used as the drainage pump, and the drainage capacity is adjusted by adjusting the capacity. Various adjustment modes of the drainage capacity can be changed.

(F) In practicing the present invention, the drying discharge water level detection means and the cleaning water level detection means are configured to be combined with a single water level detection sensor as described in the above embodiment. Various forms can be applied, such as configuring the detection means and the cleaning water level detection means as separate sensors.

6 Drain pump 9 Heating means 21 Air supply port 22 Air suction port 23 Ventilation means D Washing tank E Hot water intermittent means F Ventilation path G Dehumidification part H Control means J Drying water level detection means, Washing water level detection means Q Cleaning space

Claims (7)

  1. A drainage pump that draws hot water from the bottom of the washing space of the washing tank and discharges it outside,
    By cooling the air in the cleaning space circulated by the ventilation means through the ventilation path extending from the air suction port to the cleaning space and the air supply port to the cleaning space by contact with hot water for dehumidification, A dehumidifying part configured to condense and dehumidify moisture in the air, and to flow the dehumidified hot water and condensed water into the washing tank;
    Heating means for heating the air in the cleaning space;
    Hot water intermittent means for intermittently supplying hot water to the cleaning space and intermittently supplying hot water to the dehumidifying section;
    A drainage discharge water level detection means for detecting that the level of hot water stored at the bottom of the washing space is a drainage discharge water level;
    A cleaning unit that cleans an object to be cleaned in the cleaning space, a rinsing process for rinsing the object to be cleaned, and a control unit that executes a drying process for drying the object to be cleaned;
    The control means is
    In the drying treatment, the heating means, the heating means, and the air passing through the ventilation path are brought into contact with the hot water for dehumidification and the air passing through the ventilation path. A drainage for drying that controls hot water intermittent means and, when the drying discharge water level is detected by the drying discharge water level detection means, operates the drainage pump to discharge hot water at the drainage discharge water level. Configured to repeat driving, and
    When the elapsed time from the start of the drying process is a set drying process time, a dishwasher configured to stop the drying process,
    Reaching the water level until the drying discharge water level is detected again by the drying discharge water level detection means after the control means discharges the hot water stored at the bottom of the washing space in the drying drain operation. A dishwasher configured to change and set the set drying processing time according to time.
  2.   If the water level arrival time is within a preset standard arrival time, the control means sets a preset standard processing time to the set drying processing time, and the water level arrival time is greater than the standard arrival time. 2. The tableware according to claim 1, wherein when the time is longer, a time obtained by multiplying the ratio between the water level arrival time and the standard arrival time by the standard processing time is set as the set drying processing time. washing machine.
  3.   The dish washing according to claim 1 or 2, wherein the control means is configured to execute a notification process for notifying that maintenance is required when the water level arrival time is longer than a preset abnormality determination time. Machine.
  4. A cleaning water level detecting means for detecting that the level of hot water stored in the cleaning space is a cleaning water level higher than the drying discharge water level is provided,
    The control means is
    In the cleaning process and the rinsing process, the hot water intermittent means is controlled to store the hot water at the cleaning water level in the cleaning space for cleaning and rinsing, and after the cleaning process and the rinsing process And in order to discharge the hot water stored in the cleaning space, the cleaning drain operation for operating the drain pump is executed, and
    In the cleaning process and the rinsing process, when the hot water of the cleaning water level is stored in the cleaning space, the cleaning water level detection is performed without the drying discharge water level detecting means detecting the drying water level. When the means detects the cleaning water level, it is determined that the drying discharge water level detecting means is in an abnormal failure state, and in the drying process after determining the failure state, the drying drainage After the operation, the drain pump is operated to discharge hot water stored in the bottom of the cleaning space, and when the set failure interval time has elapsed, the drain pump is made to operate again, and the bottom of the cleaning space The hot water stored in the tank is discharged in a form that is discharged, and the set failure operation time is set to the set drying processing time. Dishwashing machine according to.
  5. The control means is
    In the cleaning process and the rinsing process, when the hot water at the cleaning water level is stored in the cleaning space, the cleaning water level detection means is detected after the drying discharge water level detection means detects the drying discharge water level. When the cleaning water level is detected, the water level arrival time measured in the subsequent drying process is stored as a normal water level arrival time, and the normal water level arrival time is set as the set failure interval time. The dishwasher according to claim 4, wherein the dishwasher is configured to be set as follows.
  6. The control means is
    In the cleaning process and the rinsing process, the elapsed time until hot water at the cleaning water level is stored in the cleaning space is stored as a storage time, and the ratio between the storage time and a preset standard storage time is The dishwasher of Claim 4 comprised so that the time multiplied by the preset standard interval time may be set to the said set failure interval time.
  7. The control means is
    In the cleaning process and the rinsing process, when the hot water at the cleaning water level is stored in the cleaning space, the cleaning water level detection means is detected after the drying discharge water level detection means detects the drying discharge water level. When the water level for washing is detected, the water level arrival time measured in the subsequent drying process is stored as a normal water level arrival time, and the normal water level arrival time and a preset standard water level arrival time are stored. The time obtained by multiplying the ratio with the standard processing time set in advance is set as the set drying processing time as the set failure operation time. The dishwasher as described in the item.
JP2011099908A 2011-04-27 2011-04-27 Dishwasher Expired - Fee Related JP5666978B2 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6023A (en) * 1849-01-09 Body-brace
US8000A (en) * 1851-03-25 Improvement in scythe-fastenings
US10019A (en) * 1853-09-13 Improvement in the manufacture of plain and figured fabrics
JP2010233653A (en) * 2009-03-30 2010-10-21 Harman Pro:Kk Dishwasher

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6023A (en) * 1849-01-09 Body-brace
US8000A (en) * 1851-03-25 Improvement in scythe-fastenings
US10019A (en) * 1853-09-13 Improvement in the manufacture of plain and figured fabrics
JP2010233653A (en) * 2009-03-30 2010-10-21 Harman Pro:Kk Dishwasher

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