JP2013128556A - Dish washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dish washing and drying machine capable of effectively performing uniform drying without discharging highly humid air in a dish drying step, even when hot water piping supplied from a gas water heater or the like is connected to the water supply connection port of the dish washing and drying machine and the temperature of cooling water for dehumidification becomes higher than that of air circulated through a ventilation route.SOLUTION: A dehumidification part G is configured to dehumidify the air from a washing space Q sucked from an air suction port by bringing the air from the washing space Q sucked from the air suction port 22 into contact with cooling water for dehumidification supplied at a prescribed flow rate per unit time for prescribed time and condensing moisture in the air. Further, according to the temperature of the air circulated through the ventilation route and the temperature of the cooling water for dehumidification, intermission of the conduction of the cooling water for dehumidification by a cooling-water-for-dehumidification intermission valve (cooling-water-for-dehumidification conduction intermission means) 27 is controlled.

Description

  The present invention relates to a dishwasher for washing and drying dishes, and more specifically, in a step of drying dishes, air containing a large amount of moisture is circulated outside by circulating the air in the washing space while dehumidifying it. The present invention relates to a dishwasher having a function of drying tableware without discharging.

As a usage pattern of the dishwasher used for washing and drying dishes such as dishes and tea bowls, the object to be washed is stored in the washing space and is washed from the washing nozzle provided in the washing space. Washing is performed by ejecting washing water toward the object, then rinsing water is ejected from the washing nozzle and then rinsing is performed, and then the drying air is blown through the object to be washed. This aspect is standard.
However, in some cases, it may be used in various other forms of use, such as rinsing treatment and drying treatment on an object to be cleaned that does not require washing, such as hand-washed.

  Such a dishwasher / dryer is provided with a ventilation means for circulating the air in the cleaning space through the ventilation path, and a dehumidifying part for dehumidifying the air circulated through the ventilation path. There is a circulation type that is sucked from a suction port and dehumidified in a dehumidifying section cooled by cooling water, and then returned from the air supply port to the cleaning space.

  In the case of this circulation type dishwasher / dryer, moist air is not discharged outside during the drying process, so it can be used by the user or in an installation area such as a kitchen where the dishwasher / dryer is installed. The inconvenience that moist air is blown to other existing devices is solved, and it becomes possible to clean and dry the comfortable dishes.

  As one of such tableware washing and drying machines, for sucking air from the washing space into the upper region of one circumferential wall portion among the four circumferential wall portions in the washing space formed in a square shape in plan view An air suction port is formed, and an air supply port for supplying air to the cleaning space is formed in the lower region of the peripheral wall portion. As a ventilation means in the ventilation path from the air suction port to the air supply port There has been proposed a dishwasher / dryer provided with a circulation fan and a dehumidifying section that dehumidifies the air circulating by cooling with cooling water (see Patent Document 1).

  However, the dishwasher / dryer of Patent Document 1 has a problem that the dehumidifying capacity varies depending on the temperature of the dehumidifying cooling water, and the drying performance varies accordingly. For example, in order to expedite the temperature rise of washing hot water during washing, the hot water pipe connected to the water supply connection port of the dishwasher / dryer is connected to a hot water pipe supplied with hot water from a gas water heater or the like. Depending on the temperature, the hot water cannot be used as the dehumidifying cooling water, and there is a problem that the circulating air cannot be dehumidified effectively.

JP-A-8-131391

  The present invention has been made to solve the above-described problems, and is connected to a water supply connection port of a dishwasher / dryer by a hot water pipe supplied from a gas water heater or the like, and is circulated through a ventilation path. Even when the temperature of the cooling water for dehumidification may be higher than that, it is possible to effectively perform uniform drying, and the tableware drying process does not discharge humid air An object is to provide a washing dryer.

In order to achieve the above object, the dishwasher of the present invention comprises:
From the cleaning tank for storing dishes and cleaning the dishes by spraying the cleaning water supplied and stored from the water supply port, and the air suction port disposed in the cleaning space formed in the cleaning tank, Ventilation means for circulating the air in the cleaning space through a ventilation path formed over an air supply port disposed in the cleaning space, and a dehumidifying unit for dehumidifying the air circulated through the ventilation path And a dehumidifying cooling water flow intermittent means for interrupting the flow of the dehumidifying cooling water supplied from the water supply port to the dehumidifying section,
In the drying step of drying the tableware, a drying operation in which the air in the cleaning space is sucked from the air suction port, guided to the dehumidifying unit and dehumidified, and then returned to the cleaning space through the ventilation path is performed with a predetermined drying A dishwasher configured to run over a process run time,
The dehumidifying unit brings the air from the cleaning space sucked from the air suction port into contact with the dehumidifying cooling water to which a predetermined flow rate is supplied per unit time for a predetermined time, and thereby moisture in the air. And is configured to dehumidify air from the cleaning space sucked from the air suction port by condensing
The intermittent flow of the dehumidifying cooling water by the dehumidifying cooling water flow interrupting means is controlled according to the temperature of the air circulated through the ventilation path and the temperature of the dehumidifying cooling water. It is characterized by being.

  The dishwasher / dryer of the present invention is a temperature of the air circulated through the ventilation path according to the detection value of the cleaning water temperature detecting means for detecting the temperature of the cleaning water provided on the outer surface of the cleaning tank. It is preferable that it is comprised so that may be calculated | required.

  Further, when the dehumidifying cooling water flow is not performed by the control by the dehumidifying cooling water flow intermittent means, the drying process execution time is configured to be extended by a set extension time. Is preferred.

  In addition, the dishwasher / dryer of the present invention includes a season determination unit that determines a season, and is configured to set the set extension time according to a result of the season determination by the season determination unit. preferable.

  The dishwasher / dryer of the present invention further includes a washing tank vicinity temperature detecting means for detecting the temperature in the vicinity of the washing tank, and the season determination means determines the season based on the output of the washing tank vicinity temperature detection means. It is preferable that it is comprised.

Moreover, the dishwasher / dryer of the present invention comprises:
(a) a cumulative time obtained by accumulating the time of the drying operation performed by flowing the dehumidifying cooling water;
(b) The converted cumulative time obtained by accumulating the time obtained by dividing the time of the drying operation without flowing the cooling water for dehumidification by a predetermined constant, and the dehumidifying capacity per unit time is Conversion cumulative time converted to be the same as in the case of the drying operation performed by passing cooling water for dehumidification,
It is preferable that the drying operation is terminated when the total of the two reaches a predetermined drying process execution time.

  Further, the dishwasher / dryer of the present invention stops the ventilation means and allows the dehumidifying cooling water to flow during the drying operation in which the dehumidifying cooling water does not flow, and the temperature of the dehumidifying cooling water It is preferable that it is comprised so that it may measure.

  Moreover, it is preferable that the dishwasher of this invention is comprised so that the notification to that effect may be performed, when performing a drying operation, without flowing the cooling water for dehumidification.

  In the dishwasher / dryer of the present invention, as described above, the dehumidifying unit uses the dehumidifying cooling water supplied with a predetermined flow rate per unit time to the air from the cleaning space sucked from the air suction port and the predetermined amount. It is configured to dehumidify the air from the cleaning space sucked from the air suction port by bringing the moisture in the air into contact for a period of time, and the temperature of the air circulated through the ventilation path The circulation of the dehumidifying cooling water flow by the dehumidifying cooling water flow intermittent means is controlled according to the temperature of the dehumidifying cooling water and circulates in the washing tank and the ventilation path. Only when the temperature of the dehumidifying cooling water is lower than the temperature of the humid air, the dehumidifying cooling water is dehumidified. When the temperature of the dehumidifying cooling water is equal to or higher than the temperature of the humid air circulating in the washing tank and the ventilation path Dehumidification is cold for dehumidification Rather than being performed by water, dehumidification is performed by condensation on the wall surface of the washing tank or ventilation path where the temperature is lower than the temperature of the humid air circulating in the washing tank and ventilation path. Dishwashing and drying capable of stable drying operation by preventing a decrease in drying efficiency in the dehumidifying section due to the fact that water having a higher temperature than the humid air circulating in the path is supplied as cooling water for dehumidification Machine can be provided.

  Further, when the temperature of the air circulated through the ventilation path is obtained according to the detection value of the cleaning water temperature detecting means for detecting the temperature of the cleaning water provided on the outer surface of the cleaning tank, Therefore, it is possible to effectively use the temperature detector included in the dishwasher / dryer of the present invention, and to realize the dishwasher / dryer of the present invention at low cost.

  Also, if the dehumidifying cooling water flow is not controlled by the dehumidifying cooling water flow intermittent means, the drying process will be dehumidified by extending the drying process execution time by the set extension time. Even if not, it becomes possible to perform the drying appropriately, and the present invention can be effectively realized.

  In addition, it is provided with a seasonal determination means for determining the season, and by setting the set extended time according to the result of the seasonal determination by the seasonal determination means, the outside air that greatly affects the drying performance when not dehumidified in the cooling section Since drying time is set according to temperature, it can dry appropriately.

  Further, in the case where a cleaning tank vicinity temperature detection means for detecting the temperature in the vicinity of the cleaning tank is provided, and the season determination by the season determination means is performed by the output of the temperature detection means, the temperature detection means ( It is possible to provide a dishwasher / dryer that does not cause a difference in the finish of drying with a simple configuration in which a washing tank vicinity temperature detecting means) is simply provided.

  In addition, (a) the accumulated time obtained by accumulating the time of the drying operation performed by flowing the dehumidifying cooling water and (b) the time of the drying operation performed without flowing the dehumidifying cooling water are set to predetermined constants. The accumulated cumulative time obtained by dividing the accumulated time, i.e., the converted accumulated time converted so that the dehumidifying capacity per unit time is the same as in the case of the drying operation performed by flowing the cooling water for dehumidification. When the total operation reaches the predetermined drying process execution time, the drying operation is terminated, and even if the flow of cooling water for dehumidification is interrupted during the drying process, the drying finish is also achieved. It becomes possible to provide a dishwasher / dryer in which no difference occurs.

  In addition, during the drying operation that does not flow the dehumidifying cooling water, stop the ventilation means, flow the dehumidifying cooling water, and measure the temperature of the dehumidifying cooling water. When the hot water supply pipe to which hot water is supplied is connected, when the hot water set temperature of the gas water heater is changed to a low temperature by the user, the air in the cleaning space is re-applied by the hot dehumidifying cooling water. It is possible to detect that the hot water set temperature has been changed to a lower temperature while preventing deterioration of drying performance due to humidification, and the dehumidifying cooling that has been changed to a lower temperature according to the detection result. It becomes possible to perform a drying operation in which water flows, and the drying process time can be shortened.

  In addition, when a drying operation is performed without passing cooling water for dehumidification, for example, hot water from a gas water heater is supplied to a water supply connection port of a dishwasher by performing a notification to that effect. When a hot water pipe is connected to shorten the time required for the temperature rise of the washing water so that the time required for the washing operation can be shortened, lower the set temperature of the hot water supply for the gas water heater to the user. Thus, it is possible to inform that the drying process time can be shortened, and it is possible to provide a dishwasher / dryer capable of performing more appropriate and efficient drying.

It is a perspective view which shows the structure of the principal part of the tableware washing dryer concerning embodiment of this invention. It is side surface sectional drawing of the tableware washing dryer concerning embodiment of this invention. It is a perspective view which shows schematic structure of the inner side area | region of the door body of the tableware washing dryer concerning embodiment of this invention. It is a disassembled perspective view which shows schematic structure of the inner side area | region of the door body of the tableware washing dryer concerning embodiment of this invention. It is a perspective view which shows the structure of the drying unit used in the tableware washing dryer concerning embodiment of this invention, Comprising: It is a figure which shows the state which removed the front side division | segmentation casing part. It is a front view which shows the structure of the drying unit used in the tableware washing dryer based on embodiment of this invention. It is a figure for demonstrating operation | movement of the tableware washing dryer concerning embodiment of this invention. It is a figure explaining the aspect of the output of the season determination result of the season determination means which comprises the tableware washing dryer concerning embodiment of this invention.

  Hereinafter, the embodiment of the present invention will be shown and the features thereof will be described in more detail.

  The dishwasher / dryer of this embodiment is a drawer-type dishwasher / dryer. As shown in FIGS. 1, 2, and 3, a rectangular parallelepiped main body 1 having an open front portion and a main body 1. On the other hand, a cleaning tank D having a substantially rectangular shape in plan view, which is arranged in such a manner that each operation of the drawer movement and the storage movement can be freely performed, is provided.

  The cleaning tank D includes a drawer 2, and the main body 1 includes a slide rail mechanism (not shown) that supports the drawer 2 so as to be movable with respect to the main body 1. And the drawer | drawing-out part 2 is comprised so that it can pull out so that most may be exposed outside the main-body part 1. As shown in FIG.

  Further, the main body portion 1 closes the upper surface portion of the cleaning tank D while the drawer portion 2 is housed in the main body portion 1, and the upper surface of the cleaning tank D when the drawer portion 2 is pulled out from the main body portion 1. An inner lid portion 3 for opening the portion is provided, and a cleaning space Q that can be opened and closed is secured in the internal space of the cleaning tank D (see FIG. 2).

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. When the drawer part 2 is pulled out from the main body part 1 or stored, A gripping part B for gripping is provided. Although not described in detail, the gripping portion B is provided with an engaging means P that engages with the locking portion Pa of the main body 1 as the drawer 2 is housed in the main body 1. When the engaging means P is engaged with the locking portion Pa, the drawer portion 2 is configured to be held in the main body portion 1. And the engaging means P is comprised so that it can cancel | release engagement and can cancel | release an engagement state with the finger | toe which is holding the holding part B, when pulling out the drawer part 2 from the main-body part 1. Yes. Further, the door body A is provided with an operation unit SS for performing various operations for driving.
Further, in the dishwasher / dryer of this embodiment, as shown in FIG. 7, a water supply path 4 for supplying water to the cleaning tank D and a water supply valve 4 a for opening and closing the water supply path 4 are provided.

  A pump (combined pump) 6 that functions as a cleaning pump in the forward direction and functions as a drainage pump in the reverse direction is provided below the bottom of the cleaning tank D in the drawer 2. In addition, a cleaning nozzle 8 and an electric heater 9 as a heating means are disposed inside the cleaning tank D, and a cleaning basket 10 for storing and placing a cleaning object such as tableware is provided in the cleaning tank D. It is detachably mounted inside.

The pump 6 is connected to the water storage recess S formed at the bottom of the cleaning tank D via the suction pipe 11. The pump 6 is connected to a drain pipe 12 for draining.
Further, a water level sensor J is connected to the water storage recess S via a guide tube 13.
As shown in FIG. 2, a drain pan 14 for receiving water leakage is provided at the bottom of the main body 1, and although not particularly shown, the drain pan 14 detects water leakage that detects the presence or absence of the received water. Equipped with a sensor.

  As shown in FIGS. 2, 3, 4 and 7, the front side wall Df corresponding to the front side of the machine body, that is, the front side of the drawer, out of the four side walls in the cleaning tank D is dried. Unit K is attached.

  That is, as shown in FIG. 4 and the like, 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 away from the left and right sides on the lower side. 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 in this embodiment, the air supply port 21 is on the right side, and the air suction is performed. The mouth 22 is located on the left side.

  As shown in FIGS. 3 to 7 and the like, the drying unit K has a ventilation path F extending from the air suction port 22 to the air supply port 21 inside the casing 15 fixed to the front side wall portion Df of the cleaning tank D. A circulation fan (ventilating means) 23 that circulates the air in the cleaning space Q and a dehumidifying part G that dehumidifies the air circulated through the ventilation path F are provided. As the circulation fan (ventilating means) 23, a sirocco fan is used.

  As shown in FIG. 7, the ventilation path F includes 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 (ventilating means) 23 is disposed in the descending path part f2.

  As shown in FIG. 7, the dish washer / dryer of this embodiment is further provided with a dehumidifying water supply passage 26 for supplying dehumidifying cooling water to the distribution nozzle 51, and a dehumidifying cooling water intermittent valve for opening and closing the dehumidifying water supply passage 26. (Dehumidifying cooling water flow intermittent means) 27 and a governor 28 for stabilizing the feed water pressure are provided. The governor 28 stabilizes the water supply pressure so that the flow rate of water supplied to the distribution nozzle 51 of the dehumidifying cooling water supply means 25 can be maintained substantially constant (0.15 liter / min in the embodiment). It is configured.

  Further, a thermistor TH2 (cooling water temperature detecting means) for detecting the temperature of the dehumidifying cooling water is provided near the dehumidifying cooling water interrupting valve 27, and the temperature of the dehumidifying cooling water is detected by the thermistor TH2. It is configured as follows.

  Next, the air flow in the ventilation path F of the dishwasher / dryer of this embodiment will be described. As shown in FIGS. 5 and 6, when the circulation fan (ventilating means) 23 is operated, air is sucked from the suction opening 23 </ b> A, and the air inside the cleaning space Q is separated from the side wall portion 15 a of the casing 15 and the partition wall 40. The fluid flows upward through the ascending path portion f1 partitioned by. The air discharged from the discharge portion 23B of the circulation fan 23 flows downward through the descending path portion f2 and is supplied from the air supply port 21 into the cleaning space Q.

  In the dishwasher / dryer of this embodiment, the ascending path portion f1 is partitioned by a plurality of (in this example, five) heat transfer bodies 24a to form slit-like divided paths, and the air passing through the ascending path portion f1. Passes through each slit-like divided path.

  The air containing a large amount of water passing through each slit-shaped divided path passes through each heat transfer body 24a and its surface efficiently cooled by the dehumidifying cooling water flowing almost uniformly from the respective flow outlets 53 of the distribution nozzle 51. It cools in contact with the flowing down dehumidifying cooling water, and moisture in the air is condensed and separated.

  The dehumidifying cooling water that has flowed down from each flow-down port 53 returns to the cleaning tank D through the air suction port 22 together with the condensed water, and is stored in the water storage recess S.

  Then, in a state where the heater 9 is operated, the circulation fan (ventilating means) 23 is operated to suck air from the cleaning space Q, and the air is passed through the ventilation path F and dehumidified from the flow-down port 53 of the distribution nozzle 51. The cooling water is allowed to flow down to dehumidify the air sucked from the cleaning space Q in the dehumidifying part G, and the dehumidified air is circulated and supplied to the cleaning space Q as drying air, and the supplied air is used as a heater. By performing heating at 9, a drying operation for drying the object to be cleaned in the cleaning space Q is performed.

  Further, with the heater 9 stopped, the air in the cleaning space Q is ventilated through the ventilation path F, and the dehumidifying section G is brought into contact with the dehumidifying cooling water flowing down from the flow-down port 53 of the distribution nozzle 51 to enter the air. By deodorizing the circulating air by absorbing and removing odorous components such as ammonia and trimethylamine contained in the cooling water for dehumidification.

  In addition, after the odor component in the air sucked from the cleaning space Q is absorbed by the dehumidifying cooling water in the dehumidifying part G and separated, and then supplied to the cleaning space Q, the cleaning space Q is also deodorized. become.

  In the case of this dishwasher / dryer, the drawer 2 is equipped with a control unit H as a control means for controlling operation, as shown in FIG. 7, and the control unit H is connected to the operation unit SS. Based on the input command, the operations of the water supply valve 4a, the pump 6, the heater 9, the circulation fan (ventilating means) 23, and the dehumidifying cooling water interrupting valve 27 are controlled, and the cleaning space inside the cleaning tank D A cleaning operation in which the cleaning object of Q is cleaned with a cleaning liquid (hot water), and a rinsing process for rinsing the cleaning object with rinsing water stored in the water storage recess S of the cleaning tank D and heated by the heater 9 Operation, drain operation for draining the rinse water stored in the water storage recess S of the washing tank D, distribution nozzle 51 of the cooling fan supply means 25 for ventilation and dehumidification by the circulation fan 23 while the heater 9 is heated. Dehumidification from Drying operation in which cooling water is supplied (flowed down) to dry the air, and dehumidification from the distribution nozzle 51 in the cooling water supply means 25 for ventilation and dehumidification by the circulation fan 23 with the heater 9 stopped. Operation such as deodorization operation is performed to deodorize the air by supplying cooling water (flowing down). That is, the control unit H is configured to control the operation of the circulation fan 23 and the dehumidifying unit G so that the air in the cleaning space Q is circulated while dehumidifying in the drying process.

  In addition, the dishwasher / dryer of this embodiment allows the user to operate only the continuous operation course in which the operation unit SS is operated in the order of the washing operation, the rinsing operation, the drainage operation, the drying operation, and the deodorizing operation, or the drying operation. Various operation courses such as a dry-only course can be selected, and a standard operation course, a careful operation course, a fast operation course, and a low-temperature operation course are provided as continuous operation courses.

Hereinafter, the control operation of the control unit H will be described.
First, it is detected by a storage switch (not shown) that the drawer unit 2 is stored in the storage position of the main body unit 1, and when the power switch of the operation unit SS is turned on, a driving course is selected.

  When the start switch of the operation unit SS is turned on, the standard operation course starts, and the cleaning operation, the rinsing operation, the draining operation, the drying operation, the deodorizing operation, and the draining operation are sequentially executed.

  In the cleaning operation, when the water supply valve 4a is opened and cleaning water is supplied into the cleaning tank D through the water supply passage 4, and the water level sensor J detects that the water level has reached the set water level, the water supply valve 4a The cleaning operation for performing the water supply operation for closing the water, and then rotating the pump 6 forward and the heater 9 to eject the cleaning water from the cleaning nozzle 8 toward the object to be cleaned is performed for the set time for the cleaning operation. Then, the pump 6 is reversely operated, and the draining operation for draining the cleaning water in the cleaning tank D is performed.

  If a hot water pipe to which hot water is supplied from a gas water heater or the like is connected to the water supply connection port of the dishwasher / dryer, it becomes possible to supply hot water from a gas water heater or the like to the washing tank. The time required for the temperature rise of the cleaning water can be shortened, and the time required for the cleaning operation can be shortened.

  Further, in the rinsing operation, a water supply operation similar to the water supply operation in the above-described cleaning operation is performed, the rinsing water is stored at the set water level at the bottom of the cleaning tank D, and then the pump 6 is rotated forward so that the object is cleaned. The rinsing water jetting operation for jetting rinsing water from the washing nozzle 8 until the set time elapses, and the draining operation for draining the rinsing water stored in the bottom of the washing tank D by rotating the pump 6 in reverse. The rinsing operation is performed twice, and finally the heating rinsing operation is performed.

In the heating rinsing operation, the rinsing water is stored at the bottom of the cleaning tank D by the above-described water supply operation, and then the pump 6 and the heater 9 are operated, and the rinsing water heated by the heater 9 is used to rinse the object to be cleaned. I do. When the temperature of the rinsing water reaches the finishing set temperature (for example, 67 ° C.) by the thermistor TH (temperature detection means) (see FIG. 2), the heating rinsing operation is terminated.
The thermistor TH is a temperature detection means (washing tank vicinity temperature detection means) constituting the season determination means in the dishwasher / dryer of this embodiment, and a temperature detection means (washing water temperature detection) for detecting the temperature of the washing water. And temperature detecting means (circulating air temperature detecting means) for detecting the temperature of the air circulated through the ventilation path. However, these washing tank vicinity temperature detecting means, washing water temperature detecting means, and circulating air temperature detecting means may be provided separately to improve the degree of freedom in design and control.

  If a hot water pipe for supplying hot water from a gas water heater or the like is connected to the water supply connection port of the dishwasher / dryer, hot water from a gas water heater or the like will be supplied to the washing tank. Further, it is possible to shorten the time required for the temperature rise of the rinse water, and it is possible to shorten the operation time required for the rinsing operation and the heating rinsing operation.

  In the drainage operation, the pump 6 is operated in reverse to drain the rinse water stored in the bottom of the cleaning tank D, and the rinse water stored in the bottom of the cleaning tank D is discharged by the water level sensor J. Do this until it is detected.

  In the drying operation, with the heater 9 being heated, the ventilation operation by the circulation fan 23 and the supply operation of the dehumidifying cooling water from the distribution nozzle 51 of the dehumidifying cooling water supply means 25 are performed, and this state is used for drying. Continue until the set time has elapsed.

  The dehumidifying cooling water is supplied from the distribution nozzle 51 of the dehumidifying cooling water supply means 25 by opening the dehumidifying cooling water intermittent valve 27 and supplying water to the distribution nozzle 51 via the dehumidifying water supply channel 26. The cooling water for dehumidification is made to flow down from the flow down port 53 of the distribution nozzle 51. At this time, the flow rate of the dehumidifying cooling water is maintained substantially constant (0.15 liter / min in the embodiment) by the governor 28 for stabilizing the feed water pressure.

  The dehumidifying cooling water supplied (flowed down) from the flow down port 53 of the distribution nozzle 51 flows down through the rising path portion f1 in the ventilation path F, is guided by the inner surface of the casing 15, and is stored in the water storage recess S. The

  And every time set time passes so that the heater 9 may not be immersed by the dehumidification cooling water stored, or the water level of the recessed part S for water storage is the set water level for drainage in the water level sensor J. When this is detected, the pump 6 is reversely operated to perform drainage processing for discharging the dehumidifying cooling water to the outside.

  When the drying operation is started and the set time for drying elapses, heating of the heater 9 and ventilation by the circulation fan 23 are stopped, the dehumidifying cooling water intermittent valve 27 is closed, and the supply of water to the distribution nozzle 51 is stopped. Then, the flow of the dehumidifying cooling water from the distribution nozzle 51 is stopped.

  In the deodorizing operation, with the heater 9 stopped, the ventilation operation by the circulation fan 23 and the dehumidifying cooling water supply operation from the distribution nozzle 51 of the dehumidifying cooling water supply means 25 are performed, and the state is deodorized. Maintain until set time has passed. In this deodorizing operation, as in the case of the drying operation described above, every time the set time elapses or the water level sensor J detects that the water level of the water storage recess S is the set water level for drainage. Sometimes, the pump 6 is operated in reverse to perform a drainage process for discharging the dehumidifying cooling water ejected from the distribution nozzle 51 and stored in the water storage recess S to the outside.

  When the set time for deodorization elapses after the start of the deodorizing operation, the ventilation operation by the circulation fan 23 and the supply operation of the dehumidifying cooling water from the distribution nozzle 51 of the dehumidifying cooling water supply means 25 are stopped to eliminate the deodorization. End driving.

  Then, after the deodorizing operation is completed, the drainage operation is performed. In this drainage operation, the water level sensor J drains the dehumidifying cooling water stored in the drainage operation of discharging the dehumidifying cooling water stored in the water storage recess S by operating the pump 6 in the reverse direction. Continue until it is detected.

  When the water supply operation is performed in the cleaning operation and the rinsing operation, a process of opening the dehumidifying cooling water interrupting valve 27 and supplying water to the distribution nozzle 51 through the dehumidifying water supply passage 26 is also performed. I also try to do it together. In this way, water is supplied from the dehumidifying water supply channel 26 to the dehumidifying part G without wasting water, so that the dehumidifying part G is kept as clean as possible.

In the dishwasher / dryer of this embodiment, as shown in FIG. 2, a thermistor TH is disposed as a temperature detecting means so as to be in close contact with the bottom surface of the washing tank D. The thermistor TH is directly behind the bottom surface of the cleaning tank D corresponding to the region where the heater 9 is disposed in plan view (that is, directly below the position where the heater 9 is disposed on the back side of the bottom surface of the cleaning tank D). Position).
When the user turns on the power switch of the operation unit SS, the thermistor is operated when a predetermined time (for example, 5 hours) has elapsed since the energization of the heater 9 was stopped in the control unit H (FIG. 7). From the output of the detected temperature of TH, the season determination means determines the season. In addition, in the dishwasher of this embodiment, the control part H is comprised so that the function as a season determination means may be fulfill | performed together.

In the dishwasher / dryer of this embodiment, for example, the seasonal determination as shown in Table 1 and FIG. 8 is performed based on the detected temperature of the thermistor TH when 5 hours or more have passed since the heater 9 was de-energized. The result is output.
The initial setting is “Spring / Autumn”.
Further, when 5 hours or more have not passed since the energization of the heater 9 is stopped, the previous determination result is used.

  The output of the season determination will be described with reference to Table 1 and FIG. 8. If the detected temperature of the thermistor TH when 5 hours or more have elapsed is, for example, 25 ° C. or more, the determination result that the season is summer is output. Thereafter, when the detected temperature decreases to 23 ° C., it is determined that the season has changed from summer to spring / autumn. Thereafter, when the detected temperature falls below 12 ° C., it is determined that the season has changed from spring / autumn to winter. Thereafter, when the detected temperature reaches 14 ° C., it is determined that the season has changed from winter to spring / autumn.

  The season determined by the season determination means is used for selecting the set time for the drying operation in the drying operation described later.

  Then, in the drying operation, as shown in Table 2, the circulation fan 23 keeps the heater 9 ON until the set time (drying operation time) set according to the output of the season determination means is reached. The tableware is dried by performing the ventilation operation and the dehumidifying cooling water supply operation from the distribution nozzle 51 of the dehumidifying cooling water supply means 25.

  That is, in the dishwasher / dryer of this embodiment, the dehumidifying cooling water flowing from the distribution nozzle 51 to the heat transfer body 24a of the condensing unit 24 is circulated through the ventilation path F in the cleaning tank D (cleaning space Q). The air is cooled by contact with hot and humid air. Then, the temperature of the air is lowered, the saturated vapor pressure is lowered, the moisture is condensed by the amount exceeding the saturated vapor pressure at that temperature, and the moisture in the air is removed, whereby dehumidification is performed.

  During the drying operation, the ventilation operation by the circulation fan 23 and the supply operation of the dehumidifying cooling water from the distribution nozzle 51 of the dehumidifying cooling water supply means 25 are continuously performed, so that the dehumidified air is washed. Returning to the tank D (cleaning space Q), the air in the cleaning tank D is taken into the ventilation path F, and the operation of contacting the dehumidifying cooling water again is repeated, so that the water evaporated in the cleaning tank is removed. While being removed by the dehumidifying part G, the drying of the tableware proceeds.

  In Table 2, the drying time is extended for 5 minutes from the winter in the summer in the dry / standard conditions, and 10 minutes from the winter in the summer in the dry / strong conditions. This is because in summer, the outside air temperature is higher and the temperature of the dehumidifying cooling water is higher than in the winter, so the temperature of the dehumidifying cooling water and the air to be dried (passes through the ventilation path F during the drying operation). This is because the temperature difference from the high-temperature and high-humidity air) is smaller than in winter, and the amount of water removed in the dehumidifying portion G per unit time is reduced.

  Like the dishwasher of this embodiment, by making the drying operation time in the summer longer than the drying operation time in the winter, it becomes possible to secure a dehumidification amount equivalent to that in the winter in the summer. This makes it possible to perform a stable drying operation without causing a difference in the dry state.

  In the dishwasher according to the embodiment of the present invention, as described above, it is possible to perform a stable drying operation without causing a difference in the drying state depending on the season, and dishwashing and drying. Even when hot water piping supplied from a gas water heater or the like is connected to the water supply connection port of the machine, the temperature of the dehumidifying cooling water may be higher than the air circulated through the ventilation path The dehumidifying cooling water flow through the dehumidifying cooling water flow intermittent means according to the temperature of the air circulated through the ventilation path and the temperature of the dehumidifying cooling water so that uniform drying can be achieved. I try to control the intermittent flow.

The characteristic configuration of the present invention will be described in detail below.
First, the water supply temperature is detected by the thermistor TH2 (FIG. 7) that detects the temperature of the cooling water for dehumidification and is set to T2.
Then, during the drying operation, depending on the temperature t detected by TH (thermistor under the cleaning tank) and the temperature T2 detected by TH2, the dehumidifying cooling water intermittent valve (dehumidifying cooling water flow is as follows). ON / OFF control of the flow interrupting means) 27 is performed.

(a) Season determination result = summer:
When t + 4 deg ≦ T2, the dehumidifying cooling water intermittent valve 27 is turned OFF,
When t + 4 deg> T2, the dehumidifying cooling water intermittent valve 27 is turned ON.
(b) Season determination result = Spring / Autumn:
When t + 5 deg ≦ T2, the dehumidifying cooling water intermittent valve 27 is turned OFF,
When t + 5 deg> T2, the cooling water intermittent valve 27 for dehumidification is turned ON.
(c) When the season determination result is winter:
When t + 6 deg ≦ T2, the cooling water interrupting valve 27 for dehumidification is turned OFF,
When t + 6 deg> T2, the dehumidifying cooling water intermittent valve 27 is turned ON.

  Thus, dehumidification with the dehumidifying cooling water is performed only when the temperature of the dehumidifying cooling water is lower than the temperature of the humid air circulating in the cleaning tank, and the temperature of the dehumidifying cooling water circulates through the cleaning tank and the ventilation path. When the temperature is higher than the temperature of the humid air, the dehumidification is not performed by the cooling water for dehumidification, but dew condensation occurs at a place where the temperature of the wall constituting the cleaning tank or the ventilation path is lower than the temperature of the humid air circulating in the ventilation path. This is done by removing moisture.

  Further, when the dehumidifying cooling water interrupting valve 27 is OFF, stable dehumidification is performed by adjusting the drying process execution time as described below.

<Drying operation time setting method when the dehumidifying cooling water intermittent valve is OFF>
When the dehumidifying cooling water interrupting valve 27 is OFF, the drying operation time is changed and set as follows according to the relationship between the temperature t and T2 and the season determination result.
(a ') Season determination result = summer:
Drying operation time in Table 2 × 2.5
(b ') Season judgment result = Spring / Autumn:
Drying operation time in Table 2 × 2.25
(c ') Season determination result = winter:
Table 2 Drying operation time x 2
Accordingly, the drying operation time is appropriately set according to the temperature of the wall that forms the washing tank or the ventilation path that changes according to the season, and it becomes possible to obtain good drying performance.

In addition, the above <setting method of the drying operation time when the dehumidifying cooling water interrupting valve is OFF> is, in other words, as follows.
When the accumulated time (converted accumulated time) obtained by dividing the drying operation time performed by turning off the dehumidifying cooling water interrupting valve 27 by the following constants reaches the drying operation time shown in Table 2, the drying operation is performed. finish.
Season determination result = Summer: Constant = 2.5
Season judgment result = Spring / Autumn: Constant = 2.25
Season determination result = Winter: Constant = 2
The value of the cumulative time (converted cumulative time) is the dehumidifying capacity per unit time when the dehumidifying cooling water intermittent valve is OFF (when the drying operation is performed without passing the dehumidifying cooling water). It is the value of the accumulated time when converted so as to be the same as in the case of the cooling water intermittent valve ON (when the drying operation is performed by passing the dehumidifying cooling water).

  Further, during the drying operation performed with the dehumidifying cooling water interrupting valve 27 turned OFF, the circulation fan 23 is stopped and the dehumidifying cooling water interrupting valve 27 is turned ON for a predetermined recheck time (for example, 20 seconds). The dehumidifying cooling water is passed through and the temperature T2 is measured by TH2.

Further, during the drying operation, ON / OFF control of the dehumidifying cooling water interrupting valve 27 is performed in the same manner as described above according to the temperature t detected by TH and the temperature T2 detected by TH2.
The sum of the accumulated time of the drying operation performed with the dehumidifying cooling water intermittent valve 27 turned on, and the cumulative time of the time obtained by dividing the drying operation time performed with the dehumidifying cooling water intermittent valve 27 turned off by the above constants However, when the value reaches the drying operation time in Table 2, the drying operation is terminated.

Also, when the drying operation is executed without passing the dehumidifying cooling water with the dehumidifying cooling water interrupting valve OFF, a notification that the feed water temperature is high is given.
By this notification, for example, when a hot water pipe to which hot water is supplied from a gas water heater is connected and hot water having a high temperature is flowing as cooling water for dehumidification, the hot water setting of the gas water heater is set for the user. If the temperature is lowered, it is possible to inform that the drying time can be shortened, and further, it is possible to provide a dishwasher / dryer capable of performing appropriate and efficient drying.

  In the dishwasher / dryer of this embodiment, when the operation is temporarily stopped during the drying operation, the heater 9 and the drying fan 23 are turned OFF, and when the dehumidifying cooling water interrupting valve 27 is ON, the dehumidifying device is used. The cooling water interrupting valve 27 continues to be ON and prepares for a drying operation that will be resumed thereafter.

  However, when the temporary stop by opening the door body A and the temporary stop by the temporary stop switch exceed 1 hour, the dehumidifying cooling water intermittent valve 27 is ON when the dehumidifying cooling water intermittent valve 27 is ON. 27 is turned off.

  In the dishwasher of this embodiment, the drying mode has two modes of “drying / standard” with a short drying time and “drying / strong” with a long drying time. Although “standard” is set, “drying strength” can be selected by the operation unit SS.

Table 3 shows the following operation course during the drying operation.
(1) Dry only, standard driving course, careful driving course, fast driving course,
(2) The set temperature (threshold value) of the heater control in the low temperature operation course, that is, the heater ON temperature that is the temperature at which the heater is turned on, and the heater OFF temperature that is the temperature at which the heater is turned off.

  In addition, heater control is performed so that the heater is turned on until the detected temperature of the thermistor TH reaches the heater OFF temperature of Table 3 until the set time in Table 2 (set time for drying operation) is reached. Further, after the heater OFF temperature is reached, the heater control is performed so that the heater is turned OFF until the detected temperature of the thermistor TH reaches the heater ON temperature shown in Table 3, and thereby the washing tank is configured. The internal temperature is maintained at a certain level, and an efficient and stable drying operation is performed.

  The present invention is not limited to the above embodiment, and various applications and modifications can be added within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Main-body part 2 Drawer part 3 Inner cover part 4 Water supply path 4a Water supply valve 6 Pump (combined pump)
DESCRIPTION OF SYMBOLS 8 Washing nozzle 9 Heater 10 Washing basket 11 Suction pipe 12 Drainage pipe 13 Guide pipe 14 Drain pan 15 for catching water leakage 15 Casing 15a Side wall part 21 Air supply port 22 Air suction port 23 Circulation fan (ventilating means)
23A Circulating fan suction opening 23B Circulating fan discharge part 24 Condensing part 24a Heat transfer body 25 Dehumidifying cooling water supply means 26 Dehumidifying water supply path 27 Dehumidifying cooling water interrupting valve 28 Governor for stabilizing water supply pressure 40 Partition wall 51 Distributing nozzle 53 Downflow port 60 Water amount adjusting valve A Door body B Gripping part D Cleaning tank Df Front side wall part F Ventilation path f1 Ascending path part f2 Decreasing path part G Dehumidifying part H Control part J Water level sensor K Drying unit P Engagement means Pa Locking part Q Cleaning space S Recess for water storage SS Operation part TH Thermistor (temperature detection means)
TH2 Thermistor (cooling water temperature detection means) that detects the temperature of cooling water for dehumidification

Claims (8)

From the cleaning tank for storing dishes and cleaning the dishes by spraying the cleaning water supplied and stored from the water supply port, and the air suction port disposed in the cleaning space formed in the cleaning tank, Ventilation means for circulating the air in the cleaning space through a ventilation path formed over an air supply port disposed in the cleaning space, and a dehumidifying unit for dehumidifying the air circulated through the ventilation path And a dehumidifying cooling water flow intermittent means for interrupting the flow of the dehumidifying cooling water supplied from the water supply port to the dehumidifying section,
In the drying step of drying the tableware, a drying operation in which the air in the cleaning space is sucked from the air suction port, guided to the dehumidifying unit and dehumidified, and then returned to the cleaning space through the ventilation path is performed with a predetermined drying A dishwasher configured to run over a process run time,
The dehumidifying unit brings the air from the cleaning space sucked from the air suction port into contact with the dehumidifying cooling water to which a predetermined flow rate is supplied per unit time for a predetermined time, and thereby moisture in the air. And is configured to dehumidify air from the cleaning space sucked from the air suction port by condensing
The intermittent flow of the dehumidifying cooling water by the dehumidifying cooling water flow interrupting means is controlled according to the temperature of the air circulated through the ventilation path and the temperature of the dehumidifying cooling water. A dishwasher characterized by being made.   The temperature of the air circulated through the ventilation path is determined according to a detection value of a cleaning water temperature detecting means for detecting the temperature of the cleaning water provided on the outer surface of the cleaning tank. 1. The dishwasher / dryer according to 1.   The control of the dehumidifying cooling water flow interrupting means extends the drying process execution time by a set extension time when the dehumidifying cooling water is not flowed. 2. The dishwasher according to 2.   4. The dishwasher / dryer according to claim 3, further comprising a season determination unit for determining a season, wherein the set extension time is set according to a result of the season determination by the season determination unit.   5. The tableware according to claim 4, further comprising cleaning tank vicinity temperature detecting means for detecting a temperature in the vicinity of the cleaning tank, wherein the season determination means determines the season based on the output of the cleaning tank vicinity temperature detection means. Wash dryer. (a) a cumulative time obtained by accumulating the time of the drying operation performed by flowing the dehumidifying cooling water;
(b) The converted cumulative time obtained by accumulating the time obtained by dividing the time of the drying operation without flowing the cooling water for dehumidification by a predetermined constant, and the dehumidifying capacity per unit time is Conversion cumulative time converted to be the same as in the case of the drying operation performed by passing cooling water for dehumidification,
The dishwasher / dryer according to any one of claims 3 to 5, wherein the drying operation is terminated when the total of the two reaches a predetermined drying process execution time.   2. The temperature of the dehumidifying cooling water is measured by stopping the ventilation means and allowing the dehumidifying cooling water to flow during execution of the drying operation in which the dehumidifying cooling water does not flow. The dishwasher / dryer according to any one of -6.   The dishwasher / dryer according to any one of claims 1 to 7, wherein when the drying operation is executed without passing the dehumidifying cooling water, a notification to that effect is given.

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