JP2012061161A - Dish washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dish washer, capable of surely discharging hot water for dehumidification and condensed water from a dehumidification unit to the outside by a simple structure effectively using a natural structure and in a form capable of reducing running cost.SOLUTION: The dehumidification unit G for condensing and removing the moisture of air in a washing space Q which is circulated by a ventilation means 23 through a ventilation path F extending from an air suction opening 22 from the washing space Q to an air supply opening 21 to the washing space Q by bringing it into contact with the hot water for dehumidification to cool the air is configured to cause the hot water and condensed water after dehumidification treatment to flow into a washing tank D. A control means H which executes washing treatment, rinsing treatment and drying treatment is configured to operate a drainage pump 6, when the hot water stored in the bottom of the washing space Q reaches a hot water increased level in the drying treatment, to repeat drying drainage operation for discharging the hot water of the hot water increased level.

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. A dehumidifying section that condenses and dehumidifies moisture in the air by cooling the air in the cleaning space circulated in contact with hot water for dehumidification, and heating means for heating the air in the cleaning space A hot and cold intermittent means for intermittently supplying hot water to the cleaning space and intermittently supplying hot water to the dehumidifying unit, a cleaning process for cleaning the cleaning object in the cleaning space, and a rinsing process for the cleaning object And a control means for performing a drying process for drying the object to be cleaned, wherein the control means stores hot water at a cleaning water level in the cleaning space in the cleaning process and the rinsing process. Washing Waste water for cleaning that controls the hot water intermittent means to perform rinsing and that operates the drain pump to discharge hot water stored in the cleaning space after the cleaning process and the rinsing process In order to bring the dehumidified hot water and the air passing through the ventilation path into contact with each other while heating the air in the cleaning space by the heating means in the drying process. The present invention relates to a dishwasher configured to control the ventilation unit, the heating unit, and the hot water intermittent unit.

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.

  As a conventional example of such a dishwasher, the dehumidifying unit is configured to discharge the dehumidified hot water into a drain trap provided in a drainage channel outside the machine, and the dehumidified hot water is dehumidified. After the treatment, there is a structure in which the condensed water discharged immediately outside the machine and condensed in the dehumidifying section is discharged to the drain trap of the drainage channel in the same manner as the hot water after the dehumidifying treatment. (For example, refer to Patent Document 1).

In this patent document 1, there is no detailed explanation about the flow of hot water and condensed water after dehumidification discharged to a drain trap provided in the drainage channel, but in the drawing, the dehumidifying part is located above the drain trap. It is described that the external connection hose located and connected to the tip of the drainage channel provided with the drain trap is arranged to extend downward from the drain trap. It is thought that it is what makes the hot water and condensed water later flow.
Further, this Patent Document 1 does not describe a detailed explanation about the drying process, but in the drying process, a heater as a heating means provided at the bottom of the cleaning space is operated to Air will be heated.

JP-A-8-131391

  In the conventional dishwasher described above, hot water and condensed water after the dehumidifying treatment from the dehumidifying part is configured to flow using a drop, but depending on the installation form of the dishwasher, Only by using the head, the hot water and the condensed water after the dehumidifying treatment from the dehumidifying part cannot be accurately flowed, and improvement is desired.

That is, the external connection hose extending from the dishwasher is often arranged in a horizontally extending state and connected to the drain pipe at the installation location. In this case, the dehumidifying process from the dehumidifying section It is considered that the subsequent hot water and condensed water can be discharged to the outside using a head.
However, depending on the installation location of the dishwasher, the drain pipe of the installation location may be located above the drain trap of the drainage channel. In such a case, the external connection hose extending from the dishwasher In such a case, the dehumidified hot water and condensed water from the dehumidifying section can be installed only by using a head. It was not possible to make it flow into the drainage pipe at the location, and improvement was desired.

  The present invention has been made in view of the above circumstances, and the object thereof is to remove the moisture from the dehumidifying unit with a simple configuration that effectively utilizes the original configuration and in a form that reduces the running cost. It is in the point which provides the dishwasher which can discharge | emit the hot water and condensed water for water to the exterior exactly.

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 that dehumidifies by condensing moisture in the air;
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 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 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. A drainage operation for cleaning that operates the drainage pump to discharge hot water stored in the cleaning space, and
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. The hot water intermittent means is configured to be controlled, and the first characteristic configuration is
The dehumidifying unit is configured to flow hot water and condensed water after dehumidification treatment into the washing tank,
In the drying treatment operation, when the hot water stored at the bottom of the cleaning space reaches a hot water increased water level, the control means operates the drain pump to discharge the hot water at the hot water increased water level. It is characterized by being configured to repeat.

That is, the hot water and the condensed water after the dehumidifying process from the dehumidifying part are flowed into the cleaning tank.
When hot water and condensed water after dehumidification treatment from the dehumidifying section are flowed into the cleaning tank, hot water is stored at the bottom of the cleaning space in the cleaning tank. When the water level increases, the drainage operation for drying is performed in which the hot water is discharged by the drainage pump.

That is, when performing the drying process, the hot water and condensed water after the dehumidifying process from the dehumidifying part is flowed into the cleaning tank, and the hot water stored at the bottom of the cleaning space in the cleaning tank becomes the hot water increase level, Performing the drainage operation for drying is repeated.
Incidentally, the hot water increased water level is determined to be a water level that does not immerse the object to be cleaned and the heating means in the cleaning tank.

  In this way, hot water and condensed water after dehumidifying treatment from the dehumidifying part are flowed into the washing tank and discharged to the outside using the drain pump, so using the discharge capacity of the drain pump, The hot water and condensed water after the dehumidifying treatment from the dehumidifying section can be accurately discharged to the outside.

  Moreover, using a drainage pump provided for discharging hot water stored in the cleaning space for cleaning and rinsing, discharges hot water and condensed water from the dehumidifying section to the outside. Therefore, the hot water and the condensed water after the dehumidifying treatment from the dehumidifying part can be accurately discharged to the outside with a simple configuration that effectively uses the original configuration.

  Furthermore, when the hot water stored at the bottom of the cleaning space in the cleaning tank reaches a hot water increasing water level, the drainage operation for drying is repeated. For example, during the drying process, After dehumidifying from the dehumidifying part that flows into the washing tank while continuously operating the drain pump with the discharge capacity that matches the flow rate per unit time that the hot water and condensed water after dehumidifying flow into the washing tank The running cost can be reduced as compared with the case where the hot water and condensed water are continuously discharged.

  In short, according to the first characteristic configuration of the present invention, hot water and condensed water for dehumidification from the dehumidifying unit can be accurately obtained with a simple configuration that effectively utilizes the original configuration and in a form that reduces the running cost. A dishwasher that can be discharged to the outside can be provided.

The second feature configuration of the present invention is in addition to the first feature configuration described above.
A water level detection means for detecting that the level of hot water stored in the cleaning space is the increased hot water level,
The control means is configured to operate the drainage pump until a set time for dry drainage elapses when the hot water level is detected by the water level detection means in the drying drainage operation. Features a point.

  That is, when the increased water level is detected by the water level detecting means for detecting the level of the hot water stored in the cleaning space, the drain pump is operated in such a manner that the drain pump is operated until the set time for dry drainage has elapsed. Drainage operation will be carried out.

Therefore, since the drainage operation for drying is performed while directly detecting that the water level is increased by the water level detection means, the increased water level can be accurately detected. It is possible to avoid inconveniences such as storing a large amount of hot water and immersing the object to be cleaned and the heating means.
That is, for example, based on the elapsed time when the drying process is performed, the drying drainage operation is performed in a form in which it is estimated that the level of the hot water stored in the cleaning space is the increased hot water level. In this case, there may be a problem that a large amount of hot water is stored in the cleaning space during the drying process due to fluctuations in the amount of hot water after dehumidification from the dehumidifying unit and the amount of condensed water. Such inconvenience can be avoided.

Also, since the drainage pump is operated in such a way that the drainage pump is operated until the set time for dry drainage has elapsed, the drainage drainage operation is performed while simplifying the configuration of the water level detection means. It can be performed.
That is, for example, when the water level detecting means detects that the amount of hot water stored in the cleaning space is an empty water level corresponding to a state close to the sky, and the water level detecting means detects the empty water level, Although it is conceivable to perform the drainage operation for drying in a form in which the pump is stopped, in this case, there is a disadvantage that the configuration of the water level detection means becomes complicated in order to detect the air level. It is possible to avoid such inconvenience.

  In short, according to the second characteristic configuration of the present invention, in addition to the operational effects of the first characteristic configuration described above, during the drying process, a large amount of hot water is stored in the cleaning space to immerse the object to be cleaned and the heating means. Thus, it is possible to provide a dishwasher capable of performing the drainage operation for drying while simplifying the configuration of the water level detecting means.

The third feature configuration of the present invention is in addition to the second feature configuration described above.
The water level detection means is configured to detect that the level of hot water stored in the cleaning space is the cleaning water level and a hot water discharge water level lower than the cleaning water level,
The control means is configured to measure a transition time until the hot water discharge water level is detected from the cleaning water level by the water level detection means when the cleaning drain operation is executed, In the drying drainage operation, the drainage pump is operated with the same drainage capacity as that in the washing drainage operation, and the set time for the dry drainage is set based on the transition time. It is characterized by being configured as described above.

That is, after the cleaning process and the rinsing process, when a cleaning drain operation for operating the drain pump is performed to discharge the hot water stored in the cleaning space, the water level detection means causes the hot water from the cleaning level. The transition time until the discharge water level is detected is measured.
Then, in the drainage operation for drying, the drainage pump is operated with the same drainage capacity as that in the drainage operation for washing, and the drying is performed based on the above transition time measured when the drainage operation for washing is performed. The set time for drainage is set.

  In this way, when executing the washing drain operation, the water level detection means measures the transition time from the cleaning water level until it is detected as the hot water discharge water level, and the drying time is determined based on the transition time. Since the set time for drainage is changed and adjusted, even if the drainage head fluctuates due to the change in the installation form of the external connection hose extending from the dishwasher, the hot water stored at the hot water discharge level is changed. Accurate drainage to the outside.

  In other words, a long transition time means a large drainage head, and a short transition time means a small drainage head. When the head is small, the set time for dry drainage is set according to the measured transition time so that the set time for dry drainage is shortened. The hot water stored in can be drained to the outside accurately.

  By the way, if the set time for dry drainage is set to a time corresponding to the case where the drainage head is large, if the drainage head is small, it will be stored in the washing space before the set time for dry drainage elapses. However, there is a risk that noise will be generated due to the occurrence of noise in the drainage pump due to less hot water and the set time for dry drainage is set to a time corresponding to the case where the drainage head is small. If the drainage head is large, a large amount of hot water will remain in the cleaning space even after the set time for dry drainage elapses. Due to the large amount of energy consumed when starting the pump, there is a risk of inconvenience that the running cost becomes high.

  Various forms of setting the set time for dry drainage based on the measured transition time are conceivable. For example, hot water discharged from the drainage pump until the hot water discharge level is reached from the cleaning water level. Divide the amount by the transition time to obtain the amount of drainage per unit time of the drainage pump, and divide the amount of hot water remaining in the wash space at the level of increased hot water by this amount of drainage per unit time. Since the time required to drain the amount of hot water remaining in the washing space at the increased water level with the drainage pump can be obtained, this time or this time plus an extra time is used as the set time for dry drainage. It can be set.

  In short, according to the third feature configuration of the present invention, in addition to the operational effect of the second feature configuration described above, even if the drainage head fluctuates, the hot water stored at the hot water discharge water level can be drained to the outside accurately. A dishwasher can be provided.

The fourth feature configuration of the present invention is in addition to the third feature configuration,
The control means is configured to continuously operate the drainage pump until a set time for cleaning drainage elapses when the hot water discharge water level is detected by the water level detection means in the cleaning drainage operation. And, based on the transition time, is configured to change and adjust the set time for the cleaning drainage.

  That is, after the cleaning process and the rinsing process, the drainage operation for cleaning that operates the drain pump to discharge the hot water stored in the cleaning space detects the level of the hot water stored in the cleaning space. When the hot water discharge water level is detected by the means, the drainage pump is operated until the set time for cleaning drainage elapses.

  Also, the set time for cleaning drainage is changed and adjusted based on the transition time measured when the drainage operation for cleaning is performed until the water level detecting means detects that the water level is from the cleaning water level to the hot water discharge level. Will be.

  In this way, when the cleaning water discharge operation detects the hot water discharge water level by the water level detection means, the drain pump is operated until the set time for cleaning drainage has elapsed, and the water level detection means performs the cleaning water level. Since it is performed in a form in which the set time for washing drainage is changed and adjusted based on the transition time from when the hot water discharge water level is detected, it is stored in the washing space in the washing process and the rinsing process. The water can be discharged accurately.

  In other words, if the drainage operation for washing is carried out in a form in which the operation time from the start to the end is determined and the drainage pump is operated until the operation time elapses, installation of a drainage pipe extending from the dishwasher If the drainage head fluctuates due to changes in form, a large excess or deficiency will occur in the operation time, but the set time for washing drainage will elapse after the hot water level stored in the washing space reaches the hot water discharge level. The drainage pump is operated until the water level is detected, and when the drainage operation for cleaning is executed, the transition time until the water level detecting means detects that the water level is from the cleaning water level is measured. Since the set time for washing drainage is set based on the transition time, the drainage head will fluctuate greatly due to changes in the installation form of drainage pipes extending from the dishwasher Even, and that the hot water stored in the cleaning space can be accurately discharged.

  In other words, a long transition time means a large drainage head, and a short transition time means a small drainage head. If the lifting head is small, the cleaning drainage setup time is set according to the measured transition time so that the cleaning drainage setup time is shortened. The stored hot water can be discharged accurately.

  By the way, if the set time for cleaning drainage is set to a time corresponding to the case where the drainage head is large, if the drainage head is small, it will be stored in the cleaning space before the set time for cleaning drainage elapses. However, there is a risk that noise will be generated due to the occurrence of noise in the drainage pump due to less hot water and the set time for cleaning drainage is set to a time corresponding to the case where the drainage head is small. If the drainage head is large, a large amount of hot water will remain in the cleaning space even after the set time for cleaning drainage elapses. Due to the large amount of energy consumed when starting the pump, there is a risk of inconvenience that the running cost becomes high.

  Various forms of determining the set time for washing and draining based on the measured transition time are conceivable. For example, hot water discharged by the drainage pump from the washing water level to the hot water discharging water level is considered. Divide the amount by the transition time to obtain the amount of drainage per unit time of the drainage pump, and divide the amount of hot water remaining in the wash space at the level of hot water discharge by this amount of drainage per unit time. Since it is possible to obtain the time required for the amount of hot water remaining in the cleaning space to be discharged by the drainage pump at the discharge water level, this time or this time plus an extra time is used as the set time for cleaning drainage. It can be set.

  In short, according to the fourth characteristic configuration of the present invention, in addition to the function and effect of the third characteristic configuration described above, even if the drainage head fluctuates, it is stored in the cleaning space after the cleaning process and the rinsing process. It is possible to provide a dishwasher that can accurately drain hot water from the outside.

In addition to the third or fourth characteristic configuration described above, the fifth characteristic configuration of the present invention includes:
The control means is configured to store the measured transition time, and detects that the water level detection means is a water level lower than the cleaning water level when the cleaning drainage operation is started. In this case, the stored transition time is used as the measured transition time.

  That is, when the water level detecting means detects that the water level is lower than the water level for cleaning when the drainage operation for cleaning is started, the stored transition time is used as the transition time to be measured. become.

  In other words, for example, even when hot water at the cleaning water level is stored in the cleaning space, a large amount of foam is generated during the cleaning process, and a large amount of hot water is used to generate bubbles. After the treatment, when the cleaning drainage operation is started, for example, the level of the hot water stored in the cleaning space may be lower than the cleaning water level, the water level detection means is below the cleaning water level. Although it may be detected that the water level, in such a case, the stored transition time is used as the transition time to be measured.

  In short, according to the fifth characteristic configuration of the present invention, in addition to the operational effects of the third or fourth characteristic configuration described above, also when the water level when the cleaning drainage operation is started is lower than the cleaning water level, It is possible to provide a dishwasher capable of determining the transition time from the water level detection means until the hot water discharge water level is detected from the cleaning water level.

In addition to any of the first to fifth feature configurations described above, the sixth feature configuration of the present invention includes:
The air supply port and the air supply port are formed at lower positions in the side wall portion of the cleaning space,
The ventilation path is configured in an inverted U shape including an upward path portion extending upward from the air suction port and a downward path portion extending downward from the upper end portion of the upward path portion toward the air supply port. ,
The dehumidifying part is
Ejecting means for ejecting dehumidified hot water downward with respect to the air passing through the ascending path portion in the ventilation path, and air venting the ascending path portion upward by the ejecting means. It is configured to dehumidify by condensing moisture in the air by cooling with contact with dehumidified hot water sprayed downward, and the dehumidified hot water and condensed hot water are the air. It is characterized by being configured to flow into the cleaning space through a suction port.

  That is, the air suction port and the air supply port are formed at lower positions in the side wall portion of the cleaning space, and the ventilation path extends from the air suction port to the upper side and the upper end portion of the lift path portion. Since it is configured in an inverted U shape including a downward path portion extending downward toward the air supply port, it is possible to suppress clogging of leftovers in the cleaning space in the ventilation path.

  In addition, there is a risk that leftovers attached to the object to be cleaned may be scattered in the ventilation path through the air suction port or air supply port during the rinsing process or the rinsing process. The air suction port extends in the vertical direction with the air suction port positioned at the lowest position, and the descending path portion extends in the vertical direction with the air supply port positioned at the lowest position. The scattered leftovers do not move to the upper side of the ventilation path, and the leftovers scattered in the ventilation path fall into the washing space by their own weight and return to the washing space. It becomes possible to suppress the clogging of vegetables in the ventilation path.

  In addition, since the air suction port and the air supply port are formed at lower positions in the side wall portion of the cleaning space, the air flow path configured in an inverted U shape composed of the ascending path part and the descending path part is used as the air path. Ventilation means and dehumidifying parts that can be easily caught by leftovers can be formed from the location where the suction port and the air supply port are formed, and greatly upward from the air suction port and the air supply port. It can arrange | position in a distant position, and can make it easy to avoid that the vegetables left in the ventilation path penetrate | invade and adhere to a ventilation means or a dehumidification part.

  Then, the dehumidifying section causes the dehumidifying water to be ejected downward by the ejecting means with respect to the air passing upward through the ascending path portion by the ventilation operation of the ventilating means, and the air passing upward through the ascending path portion. Since the water in the air is condensed by being cooled by contact with the dehumidifying water that ejects the air, it is possible to dehumidify the air in the cleaning space while reducing the amount of the dehumidifying water used.

  In other words, since the air passing upward and the dehumidifying water ejected downward by the ejecting means are brought into contact with each other to condense moisture in the air, the dehumidifying hot water to be ejected is The dehumidifying hot water that is sprayed downward and in contact with the air before dehumidification that is vented upward will be sequentially contacted while moving in the opposite direction. The state where hot water for hot water comes into contact with air and condenses moisture in the air continues over a long region.

  As a result, when performing the drying process, it is possible to dehumidify the air in the cleaning space while reducing the amount of hot water used for dehumidification.

  Therefore, according to the sixth feature configuration of the present invention, in addition to the operational effects of any of the first to fifth feature configurations, it is avoided that the leftovers scattered in the cleaning process and the rinsing process are clogged in the ventilation path. In addition, it is possible to provide a dishwasher that can be used satisfactorily over a long period of time and that can dehumidify the air in the washing space while reducing the amount of hot water used for dehumidification. .

Perspective view of dishwasher Notched side view with the cleaning tank stored The perspective view which looked at the washing tank which removed the front door from the front side Perspective view of the cleaning tank as seen from the back Schematic diagram of dishwasher Schematic perspective view showing the flow state of drying air Notched perspective view of water level detection sensor Perspective view of the sensor Perspective view of the 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 Float perspective view Block diagram showing control configuration 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 to FIG. 4, a main body 1 is provided as a main body case with an opening on the front surface, and a drawer 2 including a cleaning tank D having a square shape in plan view is provided on the main body 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 FIGS. 2 and 5, a water supply channel 4A connected to a 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 branched from the water supply channel 4A A path 4C is provided.
The washing tank branch 4B is connected to a water supply port 5 for supplying hot water for cleaning and rinsing into the washing space Q of the washing tank D, and the dehumidifying branch 4C is connected to the front side wall Df of the washing tank D. It is connected to a dehumidifying part G to be described later.

  The first on-off valve V1 that opens and closes the water supply path 4A, the second on-off valve V2 that opens and closes the washing tank branch path 4B, and the dehumidification branch path 4C are equipped with the first on-off valve V1 and the second on-off valve. A constant flow valve V3 for limiting 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 on-off valve; 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 it is a large flow rate, a constant flow valve V4 that restricts the excessive flow rate to be suppressed is provided in a state of being integrally incorporated.

  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.5, 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 a drain pipe 12 is connected thereto.
That is, in the forward rotation state, the dual-purpose pump 6 pumps hot water stored at 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 configuration for discharging hot water to the outside will be described. The drain pipe 12 is provided in the drawer 2, the drain trap 12 </ b> B is disposed at the back side portion of the main body 1, and the tip of the drain pipe 12. The drainage trap 12B is connected by a drainage hose 12A, and an external connection hose 12C is connected to the drainage 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.
When the drain pipe at the installation location is arranged at a low position, the external connection hose 12C is arranged in a state extending in the horizontal direction, but the drain pipe at the installation location is arranged at a high position. In this case, the external connection hose 12C is disposed in a state of extending upward, and as a result, the drainage head when the hot water in the cleaning space Q is discharged changes.

Further, as shown in FIG. 5, a water level detection sensor J as a water level detection means is connected to the water storage recess S through a guide tube 13 as a communication path.
As will be described later, the water level detection sensor J stores the water level in the cleaning space Q of the cleaning tub D in the cleaning space Q of the cleaning tub D and the water level Y2 (see FIG. 11). The level of the hot and cold water to be discharged corresponds to a state in which most of the hot water is discharged from the cleaning space Q, and the hot water discharge level Y1a (see FIG. 10) is low enough to expose the heater 9, and the cleaning tank It is configured to detect that the hot water stored in D is an abnormal water level Y3 (see FIG. 12) that is higher than the cleaning water level Y2 by a set amount.
Further, as shown in FIG. 10, the water level detection sensor J is configured to detect a hot water increased water level Y1b in which the hot water level has changed from a hot water discharge water level Y1a to a slightly higher water level, the details of which will be described later.

  In this embodiment, when the water level detection sensor J detects the cleaning water level Y2, 2.3 L (liters) 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 0.7 L (liter) remains (stored) in the cleaning space Q.

As shown in FIGS. 2, 3 and 5, of the four side walls forming the cleaning space Q in the cleaning tank D, the front side wall Df corresponding to the front side of the machine body, that is, the front side of the drawer part, A drying unit K is attached.
That is, as shown in FIG. 6, 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.

The drying unit K circulates the air in the cleaning space Q through the 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. And the above-mentioned dehumidifying part G for dehumidifying the air circulated through the ventilation path F.
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. 6, 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 a main flow. While flowing toward the rear side wall, and then moving downward toward the air suction port 22 formed on the lower side of the front side wall Df and at a position separated from the air supply port 21 in the left-right direction. It flows and flows in a form discharged from the air suction port 22, and air easily flows also to a 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. 5, the drawer unit 2 is equipped with a control unit H as a control means for controlling operation.
Then, as shown in FIG. 14, the control unit H, based on a command input from the operation unit SS, a DC motor 6a 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. In the drying operation as a drying process for performing the dehumidifying hot water jetting operation and the electric heater 9 being stopped, the circulation fan 23 is ventilated and the dehumidifying hot water from the jet nozzle 25 is used. It is configured to perform deodorization operation of a deodorizing process to perform the ejection operation.

In FIG. 14, 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. The drive voltage of the DC motor 6a is adjusted to a command voltage commanded from the control unit H. Is configured to do.
L1 is an alarm lamp provided in the operation unit SS, L2 is an alarm buzzer built in the operation unit SS, L3 is a display unit provided in the operation unit SS, these alarm lamp L1, alarm buzzer L2, and In the display portion L3, the alarm means L that operates when an abnormality occurs is configured. Incidentally, a code corresponding to the content of the abnormality that has occurred is displayed on the display unit L3.
In FIG. 14, 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. Note that the operation unit SS is operated in the order of the cleaning operation, the rinsing operation, the drying operation, and the deodorizing operation, or the drying only course for operating only the drying operation. In addition, in the present embodiment, it is configured such that a standard driving course, a careful driving course, a speedy driving course, and a fast driving course can be selected as a continuous driving course. Will explain only the standard driving course of the continuous course.

A 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 executed, 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 cleaning operation of spraying the cleaning water from the cleaning nozzle 8 toward the object to be cleaned is performed until the set time for the cleaning operation elapses by operating the dual-purpose pump 6 in the forward direction and operating the heater 9. Become.
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 operated in reverse to start a draining operation for draining the hot water in the cleaning tank D. After that, when the hot water discharge level Y1a is detected by the water level detection sensor J, From the time point, the drainage operation is continuously performed until the set time for cleaning drainage elapses, details of which will be described later.

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 dual-purpose pump 6 and the heater 9 are operated to rinse the object to be cleaned with the rinse water heated by the heater 9 until the set time elapses.

  In the drainage operation after the rinsing operation, the drainage operation in which the dual-purpose pump 6 is operated in reverse to drain the hot water in the cleaning tank D in the same manner as the drainage operation after the cleaning operation is performed. Is detected until the set time for cleaning drainage 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, and the object to be cleaned is rinsed with the rinse water heated by the heater 9, and the temperature of the rinse water is set by the temperature sensor (not shown). When the set temperature for finishing (for example, 67 ° C.) is reached, the heating rinsing operation is terminated.

  The drainage operation after the heating rinse operation is the same as the drainage operation after the cleaning operation, and the drainage operation of draining the hot water in the cleaning tank D by reversely operating the combined pump 6 is performed by the water level detection sensor J. After Y1a is detected, the process is continuously performed until the set time for cleaning drainage elapses.

In the drying operation, while the electric heater 9 is heated, the circulation fan 23 is ventilated and the dehumidifying hot water is ejected from the ejection nozzle 25. This state is set for drying. Continue until time (eg, 25 minutes) has elapsed.
During the drying operation, when the water level detection sensor J detects that the above-described increased hot water level Y1b, the drainage operation for drying is performed.
The drainage operation for drying is performed until the set time for dry drainage elapses, and the drainage operation for draining by operating the dual-purpose pump 6 in reverse is described in detail later.

In this embodiment, the detection of the increased hot water level Y1b by the water level detection sensor J does not detect the state in which the water level detection sensor J detects the hot water discharge water level Y1a. It means that the state has changed.
That is, in the present embodiment, as described later, since the lowest water level that can be detected by the water level detection sensor J is the hot water discharge water level Y1a, the water level detection sensor J does not detect the hot water discharge water level Y1a. In other words, the detection of the hot water increased water level Y1b means that hot water at a level slightly higher than the hot water discharge water level Y1a is stored at the bottom of the cleaning space Q.

  Incidentally, when the lowest water level in the range that can be detected by 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 has detected the hot water discharge water level Y1a, It can be assumed that hot water of a water level corresponding to the hot water increased water level Y1b is stored at the bottom of the cleaning space Q. That is, the hot water discharge water level Y1a can be used as the hot water increase water level Y1b.

In the deodorizing operation, with the electric heater 9 stopped, the circulation fan 23 is ventilated and the ejection nozzle 25 is ejected with dehumidifying water. Repeat until it has passed.
During the deodorizing operation, when the hot water level Y1 is detected by the water level detection sensor J, the deodorizing drainage operation is performed as in the case of the drying operation.
This deodorizing drainage operation is similar to the drying drainage operation, and the drainage operation for draining by reversely operating the dual-purpose pump 6 is performed for the deodorizing drainage set at the same time as the set time for dry drainage. This is done until the set time has elapsed.

  Although not illustrated in the flowchart of FIG. 16, the control unit H is more than the hot water supply amount per unit time supplied to the cleaning space Q through the water supply channel 4A, the cleaning tank branch channel 4B, and the dehumidification branch channel 4C. The dual-purpose pump 6 is configured to operate in a state where the amount of drainage per unit time is increased, and the first on-off valve V1 and the second on-off valve V2 are opened in the cleaning operation and the rinsing operation. When the hot water is supplied to the cleaning space Q of the cleaning tank D and the abnormal water level Y3 is detected by the water level detection sensor J, the first on-off valve V1 and the second on-off valve V2 are closed, and It is comprised so that the water leakage prevention driving | operation process which operates the combined use pump 6 for waste_water | drain may be performed.

When the water level detection sensor J detects that the water level is lower than the cleaning water level Y2 when the water leakage prevention operation process is being executed, the control unit H stops the combined pump 6. The water leakage prevention operation process is configured to be stopped.
Incidentally, when the water level detection sensor J detects that the water level is lower than the cleaning water level Y2, the water level detection sensor J does not detect the cleaning water level Y2 from the state in which the cleaning water level Y2 is detected. When it changes to a state.

  In the present embodiment, when the control unit H executes a drain operation (hereinafter referred to as a cleaning drain operation) performed after each of the cleaning operation, the rinsing operation, and the heating rinsing operation, the water level detection sensor J Is configured to measure the transition time from the washing water level Y2 to the detection of the hot water discharge water level Y1a, and to set the above-described setting time for washing drainage based on the transition time. .

  That is, the amount (for example, 2.3 L (liter)) of hot water discharged from the dual-purpose pump 6 from the cleaning water level Y2 to the hot-water discharge water level Y1a is divided by the transition time, The amount of waste water per unit time is obtained, and the amount of waste water per unit time is divided by the amount of hot water remaining in the cleaning space Q (for example, 0.7 L (liter)) at the hot water discharge water level Y1a. The time required to discharge the amount of hot water remaining in the cleaning space Q at the water level Y1 by the dual-purpose pump 6 is obtained, and the time obtained by adding an extra time (for example, 2 seconds) to this time is set as the cleaning drainage time. Is configured to set as

Further, in the present embodiment, the control unit H sets the time for the above-described dry drainage in the drying drainage operation performed during the drying operation and the above-mentioned deodorization in the deodorization drainage operation performed during the deodorization operation. The set time for drainage is configured to be set based on the above-described transition time.
The set time for dry wastewater and the set time for deodorized wastewater are configured to be performed in the same manner as in the case of setting the set time for washing wastewater.

That is, the set time for dry waste water and the set time for deodorized waste water can be set to the same time as the set time for washing waste water described above, but are calculated separately.
That is, as described above, in the drying operation or the deodorizing operation, when the water level detection sensor J detects the hot water increase level Y1b, a little more hot water than the hot water discharge water level Y1a is stored, and the water level detection sensor J Means that the state of detecting the hot water discharge water level Y1a is changed to the state of detecting the hot water increase water level Y1b. Therefore, the amount of hot water remaining in the cleaning space Q at the hot water increase water level Y1b is determined by the water level detection sensor. When the hot water discharge water level Y1a is detected at J, the amount of hot water remaining in the cleaning space Q (for example, 0.7 L (liter)) is slightly larger (for example, 0.75 L (liter)). Based on this amount, the set time for dry drainage and the set time for deodorized drainage are determined.

  In addition, in this embodiment, the control unit H is configured to store the measured transition time, that is, each time the transition time is measured, the transition time is updated and stored. When the water level detection sensor J does not detect that the water level is lower than the cleaning water level Y2 when the operation is started, the stored transition time is used as the measured transition time.

Further, in the present embodiment, the drainage capacity of the dual-purpose pump 6 is configured to be adjusted to the ability to drive the DC motor 6a at a target rotational speed (for example, 3400 revolutions / minute).
That is, the control unit H sets the dual-purpose pump 6 to a target rotational speed (for example, 3400 revolutions) based on detection information of the rotational speed sensor M (see FIG. 14) as rotational speed detection means for detecting the rotational speed of the dual-purpose pump 6. Rotational speed adjustment processing (hereinafter referred to as FB control) in which the drive voltage supplied to the DC motor 6a is obtained by proportional integral control and is commanded to the DC motor drive circuit 6A using the drive voltage as a command voltage. Are abbreviated to be executed.

Hereinafter, the control operation of the drainage operation (cleaning drainage operation) will be described based on the flowchart of FIG.
First, the dual-use pump 6 is started to be driven in reverse at the target rotational speed (# 21). Incidentally, in the flowchart of FIG. 16, in order to describe the control operation in an easy-to-understand manner, the process of # 21 is described to be performed only once at first, but in actuality, the dual-purpose pump 6 is driven at the target rotational speed. The FB control for this is repeated while the dual-purpose pump 6 is driven at the target rotational speed.

Next, when the cleaning drain operation is started, it is determined whether or not the water level detected by the water level detection sensor J is the cleaning water level Y2 (# 22).
If it is determined at # 22 that the water level detected by the water level detection sensor J is the cleaning water level Y2, then whether the water level detected by the water level detection sensor J has changed from the cleaning water level Y2 That is, it is determined whether or not the water level has become lower than the cleaning water level Y2 (# 23).

  When it is determined at # 23 that the water level detected by the water level detection sensor J has changed from the cleaning water level Y2, measurement of the timer for measuring the above transition time is started (# 24), Next, it is determined whether or not the water level detected by the water level detection sensor J is the hot water discharge water level Y1a (# 25).

  If it is determined at # 25 that the water level detected by the water level detection sensor J is the hot water discharge water level Y1a, the measurement of the timer is stopped and the measurement time is updated as the above transition time. Then, based on the transition time, the set time for cleaning drainage is calculated and set (# 27). Since the procedure for setting the set time for washing and draining is as described above, the description thereof is omitted here.

  After setting and setting the cleaning drainage time in # 27, it is determined whether or not the cleaning drainage setting time has elapsed (# 28), and the cleaning drainage setting time has elapsed. The combined pump 6 is stopped (# 29), and then the next operation is started.

When it is determined at # 22 that the water level detected by the water level detection sensor J is not the cleaning water level Y2, the level of the hot water stored in the cleaning space Q is lower than the cleaning water level Y2. Without performing the time measurement process, it is determined whether the water level detected by the water level detection sensor J is the hot water discharge water level Y1a (# 30), and if it is determined that the water level is the hot water discharge water level Y1a, The process proceeds to # 27.
In the process of # 27, the set time for cleaning drainage is calculated and set based on the transition time that is updated and stored.

Next, the drying drainage operation in the drying operation will be described.
That is, the control operation of the drying drainage operation performed during the drying operation will be described based on the flowchart of FIG. 17 while explaining the drying operation.

First, the operation of the heater 9 and the circulation fan 23 is started, and the supply of dehumidified hot water is started (# 31).
Next, it is determined whether or not the combined use pump 6 is in the drainage operation (# 32). If not, the detected water level of the water level detection sensor J is the hot water discharge water level Y1a. It is determined whether or not (# 33). That is, in the present embodiment, it is detected that the detection water level 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 detecting the hot water increase water level Y1b, and the hot water and the condensed water after the dehumidification processing are detected. It is determined that the water level corresponding to the hot water increase level Y1b has been stored.

If it is determined at # 33 that the water level is not the increased hot water level Y1b, it is determined whether the elapsed time from the start of the drying operation has passed the set time for drying (for example, 25 minutes) (# 39) When the set time for drying has elapsed, the operation of the heater 9, the circulation fan 23, and the combined pump 6 is stopped, and the supply of dehumidifying hot water is stopped (# 40), and the next operation is performed. Will be transferred to.
If it is determined in # 39 that the set time for drying has not elapsed, the process proceeds to # 32.

When it is determined at # 33 that the hot water discharge increased water level Y1b, the dual-use pump 6 is started to reversely rotate at the target rotational speed (# 34), and the drying drainage operation is started. It will be.
Incidentally, in the flowchart of FIG. 17, in order to describe the control operation in an easy-to-understand manner, the process of # 34 is described so that it is performed only once at the beginning. The FB control for this is repeated while the dual-purpose pump 6 is driven at the target rotational speed.

After starting the reverse drive of the dual-purpose pump 6 at the target rotational speed at # 34, the set time for dry drainage is calculated and set based on the above transition time (# 35).
Since the procedure for setting the set time for dry drainage is as described above, description thereof is omitted here.

  Next, it is determined whether or not the detected water level of the water level detection sensor J has changed from the hot water increased water level Y1b (# 36). That is, in the case of this embodiment, it is determined whether or not the detected water level of the water level detection sensor J has changed from a state in which the hot water increased water level Y1b is detected to a state in which the hot water discharged water level Y1a is detected.

If it is detected in # 36 that the detected water level of the water level detection sensor J has changed from the hot water increased water level Y1b, it is determined whether or not the elapsed time from that time has passed the set time for dry drainage. When the set time for dry drainage has elapsed (# 37), the dual-purpose pump 6 is stopped (# 38), and then the process proceeds to # 39.
If it is not determined in # 36 that the detected water level of the water level detection sensor J has changed from the hot water increased water level Y1b, the process proceeds to # 39.

If it is determined in # 32 that the drainage operation is being performed, it is determined whether or not the detected water level of the water level detection sensor J has already changed from the hot water increased water level Y1b (# 41).
When it is determined that the hot water increased water level Y1b has already changed, the process proceeds to # 37. When it is determined that the hot water increased water level Y1b has not been changed, the process proceeds to # 36. .

  In addition, since the drainage operation in the deodorizing operation is the same as the drainage operation in the drying operation described above, the description thereof is omitted in this document.

In the dishwasher of this embodiment, as shown in FIG.4 and FIG.5, the pressure adjustment means W which adjusts automatically so that the internal pressure of the washing | cleaning 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. The temperature is low (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. As a result, a large amount of air in the cleaning space Q contracts rapidly, and the cleaning space Q In some cases, the internal pressure of 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 is configured to adjust the pressure in the cleaning space Q by communicating with the cleaning space Q in the cleaning tank D through the communication hole 32 formed in the back wall DR of the cleaning tank D. However, in the present embodiment, description of the detailed configuration is omitted.
Note that condensed water may be generated in the pressure adjusting means W, and the condensed water is collected in the cleaning tank D via the water level detection sensor J.

Hereinafter, the water level detection sensor J will be described.
As shown in FIGS. 7 to 13, a hot water storage tank 40 for detecting a water level, which is connected to the bottom of the cleaning tank D by a guide tube 13 and into which hot water in the cleaning tank D is introduced, and a hot water storage tank 40. A float 41 for detecting the water level that moves up and down according to the level of the hot water stored in the hot water storage tank 40 and a shaft portion 41B that extends upward from the main body 41A of the float 41 are guided so as to be raised and lowered. And a pair of a first water level detection unit T1 and a second detection unit T2 that are positioned above the upper end of the hot water storage tank 40 and that detect two up and down positions of the float 41 are provided. It has been.

  The hot water storage tank 40 is formed in a bottomed cylindrical shape having a quadrangular cross-sectional shape, and a connecting cylinder portion 40C is provided at the bottom as a communication port to which the above-described guide tube 13 is connected. The upper opening is covered with a lid body 42 that is formed and is fitted on the upper portion thereof.

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 upper and lower lift positions of the float 40 are a lift position (see FIG. 11) for detecting the cleaning water level Y2 and a lift position (see FIG. 10) 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 detection unit T2 are configured using a photo-interrupter type optical sensor, and the first water level detection unit T1 is provided on the first sensor mounting unit 42a protruding from the upper part of the lid body 42. The second water level detection unit T2 is mounted on the second sensor mounting portion 42b that protrudes from the top of the lid body 42.

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, as shown in FIG. 12, the abnormal water level detection electrode 43 has a second water level detection unit T1 on the high water level side of the first water level detection unit T1 and the second detection unit T2. When the set amount is higher than the water level detected at, the lid body 42 is equipped in a conductive state where it is conducted by hot water stored in the hot water storage tank 40.

As shown in FIGS. 7 and 10, the shaft portion 14B of the float 41 detects the hot water discharge water level Y1a in a state in which the float 14 is located at the lower water level elevating position among the plurality of elevating positions. The upper end portion of the hot water storage tank 40 is positioned below the upper end of the hot water storage tank 40 in the state where the upper and lower positions are located.
In addition, the guide unit U is configured to guide the shaft 40B of the float 40 positioned below the upper end of the hot water storage tank 40 so as to be positioned below the upper end of the hot water storage tank 40. Yes.

And the rocking lever 44 provided with the to-be-detected part 44a detected by the 2nd detection part T2 of the low water level side among the 1st water level detection part T1 and the 2nd detection part T2 is the shaft part 41B of the float 41. It is provided in a state where it is linked to the upper end of the upper and lower parts and swings 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, as shown in FIG. 13, a pair of left and right flag bodies 41a project from the upper end portion of the shaft portion 41B and below the upper end, and the upper end of the shaft portion 41B is prevented from coming off. The projecting portion 41b is formed so as to protrude in the same direction as the pair of left and right flag bodies 41a.
Then, the bifurcated linkage portion 44b of the swing lever 44 is inserted between the protrusion 41b for preventing the detachment and the pair of left and right flag bodies 41a, and the upper end of the shaft portion 41 is a bifurcated linkage portion. 44b is configured to penetrate through 44b.

As shown in FIG. 11, in the state where the shaft portion 41B of the float 41 is located at the elevated position on the high water level side among the plurality of elevated positions, that is, in the state where the cleaning water level Y2 is detected, The upper end portion is formed to have a length that is located above the upper end of the hot water storage tank 40.
Then, one of the pair of flag bodies 41a described above is configured to function as a detected portion detected by the first detection portion T1.

The guide portion U is configured as a guide groove U1 that engages one of a pair of flag-like bodies 41a provided at the upper end portion of the shaft portion 41B over the entire lifting / lowering range of the float 41. That is, one of the pair of flag bodies 41a is configured to function as a guided piece engaged with the guide groove U1.
Incidentally, the guide unit U is also configured to include an auxiliary guide groove U2 that engages the flag-like body 41a that functions with the detected part detected by the first detection unit T1 of the pair of flag-like bodies 41a. However, although this auxiliary guide groove U2 exists up to the vicinity of the first detection unit T1, it does not exist at a place where the flag-like body 41a that functions as the detected unit is detected by the first detection unit T1. Therefore, the float 41 is not guided over the entire lifting / lowering range of the float 41.

  When the guide portion U is described further, the cover 42 that covers the upper opening of the hot water storage tank 40 is a downward concave that protrudes downward from the upper end of the water storage tank in a state where the lid 41 is positioned lower as the shaft 41B is inserted. 42A and an upper protruding portion 42B for forming a guide groove are formed, and the guide groove U1 is formed in a state extending over the recessed portion 42A and the upper protruding portion 42B of the lid body. Yes.

  Further, the lid body 42 is formed in a state having an upper protruding portion 42C for forming the auxiliary guide groove for forming the auxiliary guide groove U2, and the auxiliary guide groove U2 is formed in the recessed portion 42A and the lid in the lid body 42. It is formed in a state extending over the upper projecting portion 42 </ b> C of the body 42.

The water level detection sensor J of the present embodiment is received on the upper surface of the lid 42 when the swing lever 44 swings to a lower position corresponding to the hot water discharge water level Y1a. The lowest water level in the detection range corresponds to the hot water discharge water level Y1a.
The detected portion 44a provided in the swing lever 44 is detected by the second detection portion T2 on the low water level side when the hot water level in the cleaning space Q is the hot water discharge water level Y1a, and the cleaning space Q When the water level of the hot water rises above the hot water discharge water level Y1a, it is configured to change to a state where it is not detected by the second detection unit T2 on the low water level side. Therefore, in the water level detection sensor J of the present embodiment, the water level at which the detected portion 44a changes from the state detected by the second detection unit T2 on the low water level side to the state where it is not detected corresponds to the hot water increased water level Y1b. become.

When the above-described washing water receiving unit 40A is described, as shown in FIG. 5, when performing drainage operation, a part of hot water flowing through the drain pipe 12 passes through the branch pipe 12a to the water level detection sensor J side. The branch pipe 12 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.

[Another embodiment]
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 embodiment described above, the transition time is measured every time the cleaning drain operation is executed. However, in the first cleaning drain operation, the transition time is measured and stored, and thereafter May be implemented in a form in which the transition time is not measured.
In other words, once the dishwasher has been installed, the drainage head does not change, so during the first washing drainage operation, the transition time is measured and stored, and then stored. You may implement in the form which sets the setting time for washing drainage, the setting time for dry drainage, and the setting time for deodorizing drainage based on transfer time.

(D) 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 set target rotational speed. Therefore, it is possible to adopt a configuration in which the driving power supplied to the AC motor is adjusted by phase control, or a driving frequency and a driving voltage are adjusted by inverter control.

(E) In the above embodiment, the dual-purpose pump that functions as a washing pump in forward rotation and functions as a drainage pump in reverse rotation is exemplified. However, even if the washing pump and the drainage pump are separately provided, good.

(F) 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.

(G) In practicing the present invention, various forms of water level detection means can be applied instead of the water level detection sensor described in the above embodiment. For example, as described in the above embodiment, the hot water discharge water level and the hot water increase water level may be set to the same water level.

6 Drain pump 9 Heating means 21 Air supply port 22 Air suction port 23 Ventilation means 25 Blowing means D Washing tank E Hot water intermittent means F Ventilation path f1 Ascending path part f2 Decreasing path part G Dehumidifying part H Control means J Water level detection means Q Cleaning Space Y1a Hot water discharge water level Y1b Hot water increase water level Y2 Cleaning water level

Claims (6)

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 that dehumidifies by condensing moisture in the air;
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 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 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. A drainage operation for cleaning that operates the drainage pump to discharge hot water stored in the cleaning space, and
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 dishwasher configured to control hot and cold intermittent means,
The dehumidifying unit is configured to flow hot water and condensed water after dehumidification treatment into the washing tank,
In the drying process, when the hot water stored at the bottom of the cleaning space reaches a hot water increased water level, the control means repeats a drainage drain operation for operating the drain pump to discharge hot water at the hot water increased water level. A dishwasher that is configured to. A water level detection means for detecting that the level of hot water stored in the cleaning space is the increased hot water level,
The control means is configured to operate the drainage pump until a set time for dry drainage elapses when the hot water level is detected by the water level detection means in the drying drainage operation. The dishwasher according to claim 1. The water level detection means is configured to detect that the level of hot water stored in the cleaning space is the cleaning water level and a hot water discharge water level lower than the cleaning water level,
The control means is configured to measure a transition time until the hot water discharge water level is detected from the cleaning water level by the water level detection means when the cleaning drain operation is executed, In the drying drainage operation, the drainage pump is operated with the same drainage capacity as that in the washing drainage operation, and the set time for the dry drainage is set based on the transition time. The dishwasher of Claim 2 comprised as follows.   The control means is configured to continuously operate the drainage pump until a set time for cleaning drainage elapses when the hot water discharge water level is detected by the water level detection means in the cleaning drainage operation. The dishwasher according to claim 3, wherein the dishwasher is configured to set a set time for the washing and drainage based on the transition time.   The control means is configured to store the measured transition time, and detects that the water level detection means is a water level lower than the cleaning water level when the cleaning drainage operation is started. In this case, the dishwasher according to claim 3 or 4, wherein the stored transition time is used as the measured transition time. The air supply port and the air supply port are formed at lower positions in the side wall portion of the cleaning space,
The ventilation path is configured in an inverted U shape including an upward path portion extending upward from the air suction port and a downward path portion extending downward from the upper end portion of the upward path portion toward the air supply port. ,
The dehumidifying part is
Ejecting means for ejecting dehumidified hot water downward with respect to the air passing through the ascending path portion in the ventilation path, and air venting the ascending path portion upward by the ejecting means. It is configured to dehumidify by condensing moisture in the air by cooling with contact with dehumidified hot water sprayed downward, and the dehumidified hot water and condensed hot water are the air. The dishwasher in any one of Claims 1-5 comprised so that it may flow in the said washing space through a suction opening.

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