JP5319361B2 - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher capable of being satisfactorily used for a long time by preventing the inside of a ventilating route from being clogged with pieces of vegetable remnants that scatter in a washing space in washing and rinsing processes. <P>SOLUTION: The dishwasher includes: a circulation fan 23 for circulating air inside the washing space Q through the ventilating route F from an air suction port 22 from the space Q to an air supply port 21 to the space Q; and a dehumidifying part G for dehumidifying air circulated through the route F. A control part H controls operations of the fan 23 and the dehumidifying part G in the drying process so that the air inside the space Q is circulated while being dehumidified. The ports 22 and 21 are formed in a lower side places on a sidewall in the space Q. The route F is formed in a reverse U shape and consists of an ascendant route part f1 extending upward from the port 22 and a descendant route part f2 extending downward from the upper end of the part f1 to the port 21. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention is provided with control means for executing a cleaning process for cleaning an object to be cleaned in an openable / closable cleaning space, a rinsing process for the object to be cleaned, and a drying process for drying the object to be cleaned. Ventilation means for circulating air in the cleaning space through a ventilation path extending from an air suction port to the cleaning space and an air supply port to the cleaning space, and a dehumidifying unit for dehumidifying the air circulated through the ventilation path Further, the present invention relates to a dishwasher configured to control the operation of the ventilation unit and the dehumidifying unit so that the control unit circulates the air in the cleaning space while dehumidifying in the drying process.

  Such a dishwasher is used for washing dishes such as dishes and tea bowls. As a standard usage pattern, when an object to be cleaned is stored in the cleaning space, The cleaning water is jetted from the provided cleaning nozzle toward the object to be cleaned, and the cleaning process is performed. Next, the cleaning object is rinsed while the rinse water is jetted from the cleaning nozzle. However, depending on the case, rinsing and drying treatments may be performed on objects to be cleaned that do not require washing such as hand washing. It may be used in various usage forms, such as being used as is.

  Further, the dishwasher includes a ventilation means for circulating the air in the cleaning space through the ventilation path, and a dehumidifying unit for dehumidifying the air circulated through the ventilation path. In the drying process, the air in the cleaning space is provided. The air is sucked from the air suction port, dehumidified at the dehumidifying part, and circulated so as to return to the cleaning space from the air supply port.Therefore, moist air may be discharged outside the machine during the drying process. Since there is no, the inconvenience that moist air is sprayed on a user or other apparatus which exists in the place where this dishwasher is installed is suppressed, and usability is improved.

  As a conventional example of such a dishwasher, an air suction port from the cleaning space is provided at an upper position in one peripheral wall portion of the four peripheral wall portions in the cleaning space formed in a square shape in plan view. Is formed, and an air supply port to the cleaning space is formed at a lower side portion of the peripheral wall portion, and a circulation fan and a dehumidifying portion as a ventilation means are provided in a ventilation path extending from the air suction port to the air supply port. (For example, refer to Patent Document 1).

  Incidentally, in what is described in Patent Document 1, the ventilation path on the suction side connected to the air suction port formed in the upper portion of the peripheral wall portion is formed in a state of being slightly upward, but the air suction port is Since it is formed at the upper side portion of the peripheral wall portion, it has a shape that slightly extends upward, and the ventilation means and the dehumidifying portion are provided on the inner side thereof.

JP-A-8-131391

  In the dishwasher, when washing water or rinsing water sprayed from the washing nozzle is sprayed on the object to be cleaned when performing the washing process or the rinsing process, the leftovers attached to the object to be cleaned are Scattered away from the object to be cleaned, but the leftovers thus separated from the object to be cleaned are collected mainly by the recovery unit provided in the drainage part at the bottom of the cleaning space, but some of them May fly upwards.

  And in the above-mentioned conventional configuration, since the air suction port is formed at a position on the upper side of the peripheral wall portion, there are cases where leftovers scattered away from the object to be cleaned enter the air suction port, As described above, the suction side ventilation path connected to the air suction port has a shape that is slightly upward. There are cases where it does not enter and exit even where ventilation means and dehumidifying parts exist. In addition, the leftovers scattered away from the object to be cleaned in this way may enter the ventilation means and the dehumidifying part inside the ventilation path, adhere and accumulate in the ventilation path, and may be clogged.

  In this way, if leftovers are clogged in the ventilation path, for example, there is a possibility that ventilation operation by the ventilation means may not be performed satisfactorily during the drying process, and leftovers are clogged in the dehumidifying section. The dishwasher is not suitable for processing, or there is a risk that the leftovers clogged and accumulated in the ventilation route will spoil, causing germs and unpleasant odors. There are disadvantages that make it impossible to use.

  An object of the present invention is to provide a dishwasher that can be used satisfactorily for a long period of time by avoiding clogging of leftovers scattered in the cleaning space in the ventilation space in the cleaning process and the rinsing process. It is in.

The dishwasher according to the present invention is a control means for executing a cleaning process for cleaning an object to be cleaned in an openable and closable cleaning space, a rinsing process for the object to be cleaned, and a drying process for drying the object to be cleaned. A ventilation means that circulates air in the cleaning space through a ventilation path extending from an air suction port to the cleaning space and an air supply port to the cleaning space, and dehumidifies the air circulated through the ventilation path. A dehumidifying unit, and the control unit is configured to control the operation of the ventilation unit and the dehumidifying unit so as to circulate the air in the cleaning space while dehumidifying in the drying process. The first characteristic configuration is
Inside the cleaning space, a cleaning basket and a cleaning nozzle are provided with the cleaning nozzle positioned below the cleaning basket,
The cleaning space is formed in a quadrangular shape in plan view,
The air suction port and the air supply port are located on one side wall portion of the four side wall portions in the cleaning space at a position lower than the cleaning basket in the side wall portion and on the left and right sides. Formed in position ,
The ventilation path extends in an upward direction from the air suction port as viewed in a horizontal direction intersecting the alignment direction of the air suction port and the air supply port, and an upper end portion of the upward path portion It is in the point comprised by the reverse U shape which consists of the downward path | route part extended below toward the said air supply port.

  That is, 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. Therefore, 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. Scattered leftovers do not move to the upper side of the ventilation path, and leftovers scattered in the ventilation path fall back into the washing space due to their own weight and return to the washing space. It becomes possible to suppress the leftovers from being clogged 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 provided with air. 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.

  Therefore, according to the first characteristic configuration of the present invention, there is provided a dishwasher that can be used satisfactorily for a long period of time by avoiding clogging of the remaining vegetables scattered in the washing process and the rinsing process in the ventilation path. I was able to do it.

  According to a second characteristic configuration of the present invention, in addition to the first characteristic configuration, the dehumidifying unit includes a jetting unit that jets dehumidifying water downward with respect to the air passing through the rising path portion upward. Thus, the air passing through the upward path portion is cooled by contact with the dehumidifying water ejected from the ejection means to condense moisture in the air.

  That is, the dehumidifying section causes the dehumidifying water to be ejected downward by the ejection means with respect to the air passing upward through the rising path portion by the ventilation operation of the ventilation means, and the air passing upward through the rising path portion. The water in the air is condensed by cooling with contact with the dehumidifying water that ejects water.

  Since the air passing upward and the dehumidifying water ejected downward by the ejecting means are brought into gas-liquid contact to condense moisture in the air, the air and the dehumidifying water ejected face each other. The dehumidifying water falling downward will contact the air before dehumidification that is vented upward, and the dehumidifying water going downward will contact the air. Thus, the state in which moisture in the air is condensed continues for as long as possible.

  As a result, it is possible to increase the dehumidification efficiency when dehumidifying the air by condensing moisture in the air by contact with the dehumidifying water and the air, reducing the amount of dehumidifying water used as much as possible, and reducing the amount of air in the cleaning space. Dehumidification can be performed.

  Therefore, according to the second characteristic configuration of the present invention, in addition to the function and effect of the first characteristic configuration, the dehumidification efficiency when dehumidifying the air is increased, and the dehumidification of the air in the cleaning space is performed with a small amount of dehumidification water. Can be done.

  According to a third feature configuration of the present invention, in addition to the second feature configuration, the dehumidifying unit is arranged in a state in which a plurality of flat plate-like heat transfer bodies in a vertically oriented posture are juxtaposed at intervals along the plate thickness direction. The dehumidifying water is ejected from the ejection means toward the plurality of heat transfer bodies, thereby causing air flowing upward through the heat transfer bodies to flow down the surface of the heat transfer bodies. By cooling by contact with dehumidification water and contact with dehumidification water flowing down between the heat transfer bodies, moisture in the air is condensed and dehumidified.

  That is, a plurality of flat plate-like heat transfer bodies that are in a vertically oriented posture are provided in a state of being juxtaposed at intervals along the plate thickness direction, and dehumidifying water is jetted from the jetting means toward the plurality of heat transfer bodies. The Then, the air passing upward through the rising path portion flows upward through the plurality of heat transfer bodies, and the air flowing through the plurality of heat transfer bodies is transferred to the surface of the heat transfer body. The water in the air is condensed by cooling by contact with the dehumidifying water flowing down and by contacting with the dehumidifying water flowing down between the heat transfer bodies.

  That is, the air passing upward through the ascending path portion is ventilated in a state of being divided into a plurality of divided path portions partitioned by a plurality of heat transfer bodies, and in each of the plurality of divided path portions. Since cooling is performed by contact with dehumidification water flowing down the surface of the heat element and contact with dehumidification water flowing down between the heat transfer bodies, the contact area between the air passing upward and the dehumidification water is minimized. It is possible to increase the efficiency, and the efficiency when the moisture in the air is condensed to dehumidify and dry the air can be further enhanced.

  Therefore, according to the 3rd characteristic structure of this invention, in addition to the effect by 2nd characteristic structure, the efficiency at the time of dehumidifying and drying air can be improved further, and the usage-amount of dehumidification water was suppressed. In this state, the air in the cleaning space can be dried.

The fourth characteristic configuration of the present invention, in addition to any one of the first feature structure to third characterizing feature, the bottom of the front SL washing space, heating means are provided to heat the air supplied from the air supply port There is in point.

  That is, the air suction port and the air supply port are formed in one side wall portion of the four side wall portions in the cleaning space at a position on the lower side of the side wall portion and separated on the left and right sides, Since heating means for heating the air supplied from the air supply port is provided at the bottom of the cleaning space, the air supplied from the air supply port to the inside of the cleaning space varies depending on the presence of the object to be cleaned, etc. Although it will change, the following flow can be considered as the flow of air.

  Referring to FIG. 8, when the air supplied from the air supply port to the cleaning space and heated by the heating means is a side wall portion (hereinafter referred to as a mouth forming side wall) where the air supply port and the air suction port are formed. Toward the side wall part (hereinafter abbreviated as "opposite side wall part") that flows toward the upper side, and then reflects on the opposite side wall part to cause the presence of the mouth forming side wall part. It will flow toward the side. The air flowing toward the mouth forming side wall portion is located on the lower side of the mouth forming side wall portion and away from the air supply port in the left-right direction. The fluid flows toward the away side and downward, and is discharged from the air suction port.

  As described above, the flow of air supplied from the air supply port to the inside of the cleaning space flows toward the opposite side wall portion while rising, and then, on the lower side of the mouth forming side wall portion and in the left-right direction from the air blowing port. The air flows while moving downward toward the air suction port formed at a remote position and becomes a flow discharged from the air suction port, so air is passed through the entire object to be cleaned in the cleaning space. The object to be cleaned can be efficiently dried.

  Therefore, according to the fourth feature configuration of the present invention, in addition to the operation and effect of any of the first feature configuration to the third feature configuration, air is passed through the entire cleaning object in the cleaning space to perform cleaning. It is possible to shorten the drying time by efficiently drying the object.

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 The exploded perspective view which looked at the washing tank from the front side Perspective view showing the configuration of the drying unit Front view showing the configuration of the drying unit Schematic diagram of dishwasher Schematic perspective view showing the flow state of drying air Flow chart showing control operation

Embodiment
A dishwasher according to the present invention will be described with reference to the drawings.
As shown in FIG. 1 to FIG. 3, a main body portion 1 having an open front portion is provided, and a drawer portion 2 provided with a cleaning tank D having a square shape in plan view is drawn out from the main body portion 1. A drawer-type dishwasher as an example of a dishwasher is configured to be movable and retractable.
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.

  And the inner cover part which obstruct | occludes the upper surface part of the washing tank D in the state which accommodated the drawer part 2 in the main-body part 1, and opens the upper surface part of the washing tank D in the state which pulled out the drawer part 2 from the main body part 1 3 is provided, and an openable / closable cleaning space Q is formed in the internal space of the cleaning tank D.

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

As shown in FIG. 7, a water supply path 4 that supplies water to the cleaning tank D and a water supply valve 4 a that opens and closes the water supply path 4 are provided.
Below the bottom of the washing tank D in the drawer 2 is provided a dual-purpose pump 6 that functions as a cleaning pump in the forward rotation and functions as a drainage pump in the reverse rotation. An electric heater 9 or the like as a heating means is arranged, and a cleaning basket 10 for storing and placing an object to be cleaned such as tableware is detachably mounted inside the cleaning tank D.

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.
A water level sensor J is connected to the water storage recess S through 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. 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.

As shown in FIGS. 2, 3, 4, and 7, among the four side walls 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, has a drying unit K. Is attached.
That is, as shown in FIG. 4, the air supply port 21 that supplies the air from the drying unit K to the cleaning space Q and the drying unit K suck the air in the cleaning space Q into the front side wall portion Df. The air suction port 22 is formed at a position 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 the present embodiment, the air supply port 21 is on the right side. The air suction port 22 is positioned on the left side.

The drying unit K is a ventilation means for circulating 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 15 fixed to the front side wall portion Df of the cleaning tank D. And a dehumidifying part G that dehumidifies 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 casing 15 includes a front-side divided casing portion 15A and a rear-side divided casing portion 15B, and is configured to be able to surround the entire drying unit K by connecting them. And FIG. 5 has shown the state which removed 15 A of front side division | segmentation casing parts.

  The dehumidifying part G includes an ejection nozzle 25 as ejection means for ejecting dehumidification water downward with respect to the air passing upward through the ascending path part f1, and passes upward through the ascending path part f1. The air to be cooled is cooled by contact with the dehumidifying water ejected from the ejection nozzle 25 to condense moisture in the air.

  If it adds explanation, as shown in Drawing 5 and Drawing 6, dehumidification part G is provided in the state where a plurality of tabular heat-transfer bodies 24 used as a lengthwise posture are arranged in parallel along the sheet thickness direction at intervals. Then, the dehumidifying water is ejected from the ejection nozzle 25 toward the plurality of heat transfer bodies 24, thereby causing the air flowing upward through the plurality of heat transfer bodies 24 to flow down the surface of the heat transfer body 24. By cooling with contact with dehumidification water and contact with dehumidification water flowing down between the heat transfer bodies 24, moisture in the air is condensed and dehumidified.

  The flow of air in the ventilation path F will be described. As shown in FIGS. 5 and 6, when the circulation fan 23 formed by the sirocco fan is operated, the circulation fan 23 sucks air from the suction opening 23A. The air inside the cleaning space Q flows upward through the ascending path portion f <b> 1 formed in a state partitioned by the lateral wall portion 15 a of the casing 15 and the partition wall 40. 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.

As shown in FIG. 5, the flat plate-like heat transfer body 24 is in a state in which the lateral width extends over substantially the entire lateral width of the rising path portion f1 and the vertical width extends over the long path along the rising path portion f1. A structure that is provided in a vertically oriented posture and is held by the casing 15 with a plurality of holding members 30 spaced apart on both the left and right sides so as to be juxtaposed at intervals along the thickness direction. It has become.
Further, the ejection nozzle 25 is provided in a state of being positioned above the plurality of heat transfer bodies 24, and the heat transfer is performed in the ejection nozzle 25 so that the plurality of heat transfer bodies 24 eject the dehumidification water evenly. A plurality of jet nozzles are formed in a state where the bodies 24 are arranged at intervals along the arrangement direction of the bodies 24.

  By configuring in this way, the rising path portion f1 is partitioned into a plurality of divided path portions partitioned by the plurality of heat transfer bodies 24, and the air passing through the rising path portion f1 upward is a plurality of It will be ventilated in a state of being divided into divided path parts, and dehumidification water can be ejected accurately from a plurality of outlets to each of the plurality of divided path parts. In each case, the air can be accurately cooled by contact with dehumidification water flowing down the surface of the heat transfer body 24 and contact with dehumidification water flowing down between the heat transfer bodies 24, and air passing upward and dehumidification water The contact area with can be made as wide as possible.

The dehumidifying water ejected from the ejection nozzle 25 flows into the cleaning tank D through the air suction port 22 and is stored in the water storage recess S.
As shown in FIG. 7, a dehumidification water supply path 26 for supplying water to the ejection nozzle 25 is provided, a dehumidification water interrupting valve 27 for opening and closing the dehumidification water supply path 26, and a governor 28 for stabilizing the supply water pressure are provided. It has been. The governor 28 for stabilizing the feed water pressure is configured to stabilize the feed water pressure and maintain the flow rate of water supplied to the ejection nozzle 25 at a substantially constant level (for example, 0.15 liter / min).

  Then, in the state where the electric heater 9 is heated, the circulation fan 23 is ventilated and the dehumidifying water is ejected from the ejection nozzle 25 so that the air sucked from the cleaning space Q is dehumidified in the dehumidifying part G. After dehumidifying, the air is supplied to the cleaning space Q as drying air, and the supplied air is heated by the electric heater 9 so that the drying operation for drying the object to be cleaned in the cleaning space Q can be performed. It is configured.

Further, with the electric heater 9 stopped, the circulation fan 23 is ventilated and the ejection nozzle 25 is ejected with dehumidifying water, thereby removing odor components in the air sucked from the cleaning space Q. After being absorbed in the dehumidifying water by G, the deodorizing operation for deodorizing the cleaning space Q can be performed by supplying the water to the cleaning space Q.
In addition, when the air in the cleaning space Q is ventilated through the ventilation path F and brought into contact with the dehumidifying water ejected by the dehumidifying section G, odorous components such as ammonia and trimethylamine contained in the air are introduced. It is deodorized by removing it from the circulating air by dissolving it in dehumidifying water and absorbing it.

  The air flow in the drying operation will be described. As shown in FIG. 8, 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 is an electric flow as a main flow. The air suction is formed at a position on the lower side of the front side wall portion Df and away from the air supply port 21 while being heated by the heater 9 and moving upward. It flows while moving downward toward the port 22 and flows in a form discharged from the air suction port 22, and also in the lower portion of the cleaning tank D where the air suction port 22 is located. This is because air easily flows. Therefore, by allowing air to flow through the entire cleaning object in the cleaning tank D and drying the cleaning object efficiently, the drying time can be shortened.

  As shown in FIG. 7, the drawer 2 is equipped with a control unit H as a control means for controlling the operation, and this control unit H is based on a command input at the operation unit SS, and is supplied with a water supply valve 4a. The operation of the dual-purpose pump 6, the electric heater 9, the circulation fan 23, and the dehumidifying water intermittent valve 27 is controlled, and the object to be cleaned in the cleaning space Q inside the cleaning tank D is cleaned with hot water as a cleaning liquid. A cleaning operation for performing the cleaning process, a rinsing operation for rinsing the object to be cleaned with the rinse water stored in the water storage recess S of the cleaning tank D and heated by the electric heater 9, In a state where the drainage operation for draining the rinse water stored in the water storage recess S of the cleaning tank D is performed and the electric heater 9 is heated, the ventilation operation of the circulation fan 23 and the ejection nozzle 25 Dehumidification water ejection operation A deodorizing process for performing a drying operation for performing the drying process and a deodorizing process for performing the ventilation operation of the circulation fan 23 and the dehumidifying water ejection operation of the ejection nozzle 25 in a state where the electric heater 9 is stopped. It is for driving. Therefore, the control unit H is configured to control the operation of the circulation fan 23 and the dehumidifying unit G in order to circulate the air in the cleaning space Q while dehumidifying it in the drying process.

Next, the operation performed by the control unit H will be described.
That is, the user selects various operation courses such as a continuous operation course in which washing operation, rinsing operation, drainage operation, drying operation, and deodorizing operation are operated in this order, and a drying only course in which only the drying operation is operated by the operation unit SS. Further, as a continuous operation course, a standard operation course, a careful operation course, a speedy operation course, and a rapid operation course are provided. In this embodiment, only the standard operation course will be described.

The control operation of the control unit H will be described based on the flowchart of FIG.
First, it is detected by the storage switch (not shown) that the drawer 2 is stored in the storage position of the main body 1 (# 1), and the power switch of the operation unit SS is turned on (# 2). A course is selected (# 3). In the present embodiment, the description will be continued assuming that the standard driving course is selected.
When the start switch of the operation unit SS is turned ON (# 4), the standard operation course is started, and the cleaning operation (# 5), the rinsing operation (# 6), the drain operation (# 7), and the drying operation (#) 8) The deodorizing operation (# 9) and the drainage operation (# 10) are sequentially executed.

  In the washing operation, first, the water supply valve 4a is opened, the cleaning water is supplied into the cleaning tank D through the water supply passage 4, and when the water level sensor J detects that the water level has reached the set water level, A cleaning operation for performing a water supply operation for closing the valve 4a, and then causing the dual-purpose pump 6 to rotate forward and the heater 9 to eject the cleaning water from the cleaning nozzle 8 toward the object to be cleaned is set for the cleaning operation. This operation is performed until time elapses, and then the dual-purpose pump 6 is operated in reverse to perform a draining operation for draining the cleaning water in the cleaning tank D.

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 dual-purpose pump 6 is operated in the forward direction to move toward the object to be cleaned. Then, a rinsing water jetting operation for jetting rinsing water from the cleaning nozzle 8 and a draining operation for draining the rinsing water stored in the bottom of the cleaning tank D by reversely operating the combined pump 6 until the set time elapses. The rinsing operation is performed twice, and finally the heating rinsing operation is performed.
The heating rinsing operation is to be cleaned with the rinsing water heated by the heater 9 by operating the combined pump 6 and the heater 9 after storing the set water level at the bottom of the cleaning tank D by the water supply operation described above. When the temperature of the rinse water reaches the finishing set temperature (for example, 67 ° C.) by the temperature sensor (not shown), the heating rinse operation is terminated.

  In the drainage operation, the dual-purpose pump 6 is operated in reverse to drain the rinse water stored in the bottom of the cleaning tank D. The water level sensor J discharges the rinse water stored in the bottom of the cleaning tank D. This is done until it is detected.

In the drying operation, with the electric heater 9 being heated, the circulation fan 23 is ventilated and the ejection nozzle 25 is ejected with dehumidifying water. 25 minutes).
The dehumidification water ejection operation of the ejection nozzle 25 will be described. The dehumidification water intermittent valve 27 is opened, water is supplied to the ejection nozzle 25 through the dehumidification water supply passage 26, and dehumidification water is ejected from the ejection nozzle 25. At that time, the flow rate of water is maintained substantially constant (for example, 0.15 liter / min) by the governor 28 for stabilizing the feed water pressure. The dehumidifying water ejected from the ejection nozzle 25 flows down through the ascending path portion f1 in the ventilation path F, is guided on the inner surface of the casing 15, and is stored in the water storage recess S.
And every time set time passes so that the electric heater 9 may not be immersed by the dehumidification water stored or the water level of the water storage recess S is the set water level for drainage by the water level sensor J. When it is detected that there is a waste water treatment, the dual-purpose pump 6 is reversely operated to discharge the dehumidifying water to the outside.

  When the drying set time elapses after starting the drying operation, the heating operation of the electric heater 9 and the ventilation operation of the circulation fan 23 are stopped, the dehumidification water intermittent valve 27 is closed, and the water to the ejection nozzle 25 is discharged. The supply is stopped and the ejection operation of the dehumidifying water of the ejection nozzle 25 is stopped.

In the deodorization operation, the circulation operation of the circulation fan 23 and the ejection operation of the dehumidifying water of the ejection nozzle 25 are performed in a state where the electric heater 9 is stopped. Do until you do. In this deodorizing operation, as in the drying operation, each time the set time elapses, or when the water level sensor J detects that the water level in the water storage recess S is the set water level for drainage, The pump 6 is operated in reverse to perform a drainage process for discharging the dehumidifying water ejected from the ejection nozzle 25 and stored in the water storage recess S to the outside.
When the set time for deodorization elapses after the start of the deodorization operation, the ventilation operation of the circulation fan 23 and the ejection operation of the dehumidifying water of the ejection nozzle 25 are stopped and the deodorization operation is terminated.

  The drainage operation is performed after the deodorizing operation is completed. In this drainage operation, the drainage operation in which the dual-purpose pump 6 is reversely operated to discharge the dehumidification water stored in the water storage recess S, and the stored dehumidification water is drained by the water level sensor J. Do this until it is detected.

  When the water supply operation is executed in the washing operation and the rinsing operation, the dehumidification water intermittent valve 27 is opened, and the process of supplying water to the ejection nozzle 25 through the dehumidification water supply passage 26 is also performed. . In this way, water is supplied from the dehumidifying water supply channel 26 to the dehumidifying part G without wasting water so as to keep the dehumidifying part G as clean as possible.

[Another embodiment]
(1) In the above-described embodiment, the dehumidifying unit juxtaposes a plurality of flat plate-shaped heat transfer bodies in a vertically oriented posture at intervals along the plate thickness direction, and supplies dehumidifying water to the plurality of heat transfer plates. Although the thing of the structure provided with the ejection nozzle which ejects was illustrated, it replaced with such a structure, for example, air is sprayed on the blade body rotated by a drive means, and air is being shattered and scattered by the blade body The structure in which the air and the dehumidifying water are brought into contact with each other can be implemented with various modifications. Moreover, it can replace with the gas-liquid contact type which contacts air and dehumidification water, and the thing of various structures, such as a structure which dehumidifies by making air contact the outer peripheral part of the piping through which cooling water circulates, can be used.

(2) In the above-described embodiment, the dehumidifying unit cools the air passing through the upward path portion extending upward from the air suction port by contact with the dehumidifying water ejected from the ejection nozzle. Although it comprised so that a water | moisture content might be condensed, it replaces with such a structure, for example, a dehumidification part dehumidifies by which the air which passes the descent | fall path part extended below toward the air supply port 21 is ejected from an ejection nozzle You may comprise so that the water | moisture content in air may be condensed by cooling by contact with water.

( 3 ) In the above embodiment, the case of heating with an electric heater in the cleaning process and the rinsing process is exemplified, but hot water is supplied from an external water heater, and the electric heater is omitted. Even if it does, it can wash | clean with the warm water in a washing process, and can rinse with the warm water in a rinse process.

( 4 ) In the above embodiment, after the rinse operation is performed a plurality of times in the rinse operation, the finish rinse operation is performed. However, the number of rinse operations can be appropriately changed. It is also possible to perform the finish rinsing operation from the beginning without performing it.

( 5 ) In the above embodiment, an example in which the present invention is applied to a drawer type dishwasher has been described. However, the present invention can also be applied to a dishwasher other than a drawer type dishwasher. For example, the present invention is applied to a dishwasher having a configuration in which a washing tank is housed in a main body of a dishwasher and a front wall portion of the main body is configured to be openable and closable with respect to the main body. May be.

( 6 ) In the above embodiment, the case where the heating means 9 is provided in the lower portion of the cleaning nozzle 8 is exemplified. However, drying is performed between the ventilation means 23 and the air supply port 21 together with the heating means 9 or instead of the heating means 9. Heating means may be provided, and the heated and dried air may be supplied into the cleaning space from the air supply port 21.

DESCRIPTION OF SYMBOLS 9 Heating means 21 Air supply port 22 Air suction port 23 Ventilation means 24 Heat-transfer body 25 Ejection means Df Side wall part F Ventilation path | route f1 Ascending path | route part f2 Descent | fall path part G Dehumidification part H Control means Q Cleaning space

Claims (4)

Control means for executing a cleaning process for cleaning a cleaning object in a freely openable / closable cleaning space, a rinsing process for the cleaning object, and a drying process for drying the cleaning object is provided. Ventilation means for circulating air in the cleaning space through a ventilation path extending from an air suction port and an air supply port to the cleaning space; and a dehumidifying unit for dehumidifying the air circulated through the ventilation path, Means is a dishwasher configured to control the operation of the ventilation means and the dehumidifying unit to circulate the air in the washing space while dehumidifying in the drying process,
Inside the cleaning space, a cleaning basket and a cleaning nozzle are provided with the cleaning nozzle positioned below the cleaning basket,
The cleaning space is formed in a quadrangular shape in plan view,
The air suction port and the air supply port are located on one side wall portion of the four side wall portions in the cleaning space at a position lower than the cleaning basket in the side wall portion and on the left and right sides. Formed in position ,
The ventilation path extends in an upward direction from the air suction port as viewed in a horizontal direction intersecting the alignment direction of the air suction port and the air supply port, and an upper end portion of the upward path portion The dishwasher comprised in the reverse U-shape which consists of the downward path part extended toward the said air supply port from the downward direction. The dehumidifying part is
Ejection means for ejecting dehumidification water downward with respect to air passing upward through the ascending path portion is provided, and air passing upward through the ascending path portion is ejected from the ejection means. The dishwasher according to claim 1, wherein the dishwasher is configured to cool by contact with dehumidifying water to condense moisture in the air. The dehumidifying part is
A plurality of flat plate-like heat transfer bodies in a vertically oriented posture are provided in a state of being juxtaposed at intervals along the plate thickness direction, and dehumidifying water is jetted from the jetting means toward the plurality of heat transfer bodies. The air flowing upward between the plurality of heat transfer bodies is cooled by contact with dehumidification water flowing down the surface of the heat transfer body and contact with dehumidification water flowing down between the heat transfer bodies. The dishwasher of Claim 2 comprised so that it may dehumidify by condensing the water | moisture content in air by doing. The bottom of the front Symbol cleaning tank space, dishwasher as claimed in any one of claims 1 to 3, the heating means is provided for heating the air supplied from the air supply port.

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