JP5636894B2 - dishwasher - Google Patents

Description

  The present invention relates to a dishwasher for washing dishes using washing water.

  Conventionally, in the drawer-type dishwasher 101 in which the washing tank slides, the one having a plurality of washing nozzles with different mounting heights includes a first washing tank 102 that slides horizontally as shown in FIG. The second cleaning tank 103 is provided above one cleaning tank 102 and is fixed to the main body. Among the plurality of nozzles, the lower nozzle 104 provided at the lowermost position is provided in the first cleaning tank 102, and the other nozzles (upper nozzle 105) are provided in the second cleaning tank 103. The cleaning water is supplied from the cleaning pump 106 to the upper nozzle 105 through the internal water conduit 107 and the back water conduit 108. The internal water conduit 107 and the back water conduit 108 are connected on the back surface of the second cleaning tank 103, and the back water conduit 108 is provided on the back surface of the first cleaning tank 102. A water receiving plate 110 is provided between the first cleaning tank 102 and the second cleaning tank 103, and when the first cleaning tank 102 is pulled out together with the door body 109, water droplets in the second cleaning tank 103 are removed. Is received by the water receiving plate 110 so that water droplets do not fall to the lower part of the main body outside the first cleaning tank 102 (see, for example, Patent Document 1).

  In this configuration, when the door body 109 is slid, the first cleaning tank 102 is also slid in association with each other. Moreover, since the some nozzle from which attachment height differs is provided, it has a high washing | cleaning performance with respect to a to-be-washed | cleaned object (tableware).

Special table 2003-500145 gazette

  However, in such a conventional dishwasher, when the object to be cleaned provided in the second cleaning tank 103 is cleaned, the cleaning water sprayed from the upper nozzle 105 cleans the object to be cleaned and then receives the water receiving plate. 110, and only drained to the first cleaning tank 102, the circulating cleaning water passing through the cleaning tank could not be used effectively. In addition, the baskets for setting the objects to be cleaned installed in the respective cleaning tanks have their own cleaning nozzles, so that the amount of cleaning water necessary for cleaning increases and there is a problem in water saving.

  The present invention solves the above-described conventional problems, and effectively utilizes the circulating cleaning water that passes over the water receiving plate 110 (receiving plate) and is drained to the first cleaning tank 102 (lower tank). The purpose is to provide a dishwasher that is water-saving, energy-saving and easy to use.

In order to achieve the above object, the present invention divides the cleaning tank into an upper tank and a lower tank, a cleaning tank that accommodates an object to be cleaned, a door that is movable in a substantially horizontal direction and opens and closes the cleaning tank, and the cleaning tank. A receiving plate, an upper cleaning nozzle for cleaning an object to be cleaned provided in an upper basket in the upper tank, a lower cleaning nozzle for cleaning an object to be cleaned provided in a lower basket in the lower tank, and the upper cleaning nozzle A cleaning pump that supplies cleaning water to the lower cleaning nozzle, an upper and lower flow path that is provided between the receiving plate and the door and communicates with the upper tank and the lower tank, and a middle basket installed in the upper and lower flow path. A dishwasher provided with a second upper and lower flow path between a side surface of the receiving plate and the washing tank .

As a result, the circulating cleaning water in the upper tank passes through the middle basket via the upper and lower flow paths and is then supplied to the lower tank. Therefore, the object to be cleaned installed in the middle basket is used as the recovered cleaning water. By being constantly exposed, the cleaning performance is improved, and by using the circulating cleaning water for cleaning, a wasteful amount of water can be saved and a water saving effect can be obtained.
Furthermore, by providing a second vertical flow path between the side surface of the receiving plate and the cleaning tank, a large object to be cleaned such as a cutting board is set in the second vertical flow path portion with the lower cage. However, since a part of the circulated cleaning water passes, it contributes to the improvement of the cleaning performance.

  In the dishwasher of the present invention, when the object to be cleaned provided in the upper basket is washed by providing a middle basket in the upper and lower flow paths between the receiving plate and the door, the washing water in the upper tank is collected by the washing pump. Therefore, it passes through the middle car through the upper and lower flow paths. Therefore, the objects to be cleaned installed in the middle basket are always exposed to the recovered cleaning water, so that the cleaning performance is improved and the use of the circulating cleaning water for cleaning saves unnecessary water and saves water. An effect can be obtained. Further, it is possible to eliminate the need for a dedicated nozzle that has been conventionally required for washing an object to be cleaned stored in a cutlery basket.

Sectional schematic of the dishwasher of Embodiment 1 of this invention Schematic cross-sectional view showing another arrangement of objects to be cleaned set in the lower basket of the dishwasher Schematic cross section showing the state of the dishwasher with the door pulled out and the arrangement of the middle basket Schematic cross-section showing another arrangement of the middle basket of the dishwasher Schematic cross-section showing another arrangement of the heating unit of the dishwasher Front sectional view of the main part showing the second upper and lower flow path of the dishwasher Schematic cross-sectional view showing another shape of the receiving plate of the dishwasher Schematic cross-sectional view showing another shape of the receiving plate of the dishwasher Schematic cross-sectional view showing another shape of the receiving plate of the dishwasher Schematic cross section showing another configuration of the upper washing nozzle of the dishwasher Schematic cross-sectional view of the dishwasher detergent container Schematic cross-section showing the streamline of the drying air of the dishwasher Schematic cross-sectional view of the middle dish filter in the dishwasher Schematic cross-section showing the arrangement of the middle-stage residual filter with the door of the dishwasher pulled out Schematic cross-section showing another shape of the residual filter of the dishwasher Schematic cross-sectional view showing another shape of the receiving plate of the dishwasher Schematic cross-sectional view showing another shape of the receiving plate of the dishwasher Schematic cross-sectional view showing another shape of the receiving plate of the dishwasher Schematic cross section showing the arrangement of the water diversion part of the dishwasher Sectional view near the water diversion part of the dishwasher Schematic cross-section showing other arrangement of drainage outlet of the dishwasher Top view of the dishwasher drain from above Schematic cross-sectional view showing another shape of the receiving plate of the dishwasher Schematic cross-sectional view showing another shape of the receiving plate of the dishwasher Schematic cross-sectional view showing another shape of the receiving plate of the dishwasher Overall perspective view of a conventional dishwasher

The first invention includes a cleaning tank that accommodates an object to be cleaned, a door that is movable in a substantially horizontal direction to open and close the cleaning tank, a receiving plate that divides the cleaning tank into an upper tank and a lower tank, An upper cleaning nozzle for cleaning an object to be cleaned provided in an upper basket in the upper tank, a lower cleaning nozzle for cleaning an object to be cleaned provided in a lower basket in the lower tank, and the upper cleaning nozzle and the lower cleaning nozzle A cleaning pump that supplies cleaning water, an upper and lower flow path that is provided between the receiving plate and the door and communicates with the upper tank and the lower tank, and a middle basket installed in the upper and lower flow path, When cleaning the object to be cleaned provided in the upper car, the cleaning water in the upper tank passes through the upper and lower flow paths because it is collected by the cleaning pump. Therefore, the cleaning performance is improved by constantly exposing the object to be cleaned set in the middle basket installed in the upper and lower flow paths to the recovered cleaning water. Moreover, by using the circulating cleaning water for cleaning, a wasteful amount of water can be saved and a water saving effect can be obtained. Further, it is possible to eliminate the need for a dedicated nozzle that has been conventionally required for washing an object to be cleaned stored in a cutlery basket.
Furthermore, by providing a second vertical flow path between the side surface of the receiving plate and the cleaning tank, a large object to be cleaned such as a cutting board is set in the second vertical flow path portion with the lower cage. However, since a part of the circulated cleaning water passes, it contributes to the improvement of the cleaning performance.

  According to a second aspect of the present invention, in the first aspect of the invention, in particular, the lower car is installed in a part of the lower car by providing a part of the projected area substantially below the upper and lower flow paths. Circulating wash water from the upper basket can also be used for the washed objects. In addition, since the object to be cleaned installed in the lower basket is cleaned by the rotating lower cleaning nozzle, the cleaning water supplied to the object to be cleaned installed at the four corners of the lower basket on the locus of the nozzle is It is necessary to increase the injection angle from the lower cleaning nozzle from the substantially vertical upward direction to the horizontal direction. However, when cleaning an object to be cleaned that is high in a substantially vertical direction, if the injection angle of the cleaning water is large, it is difficult for the cleaning water to reach the top of the object to be cleaned. At the four corners, a lower basket is placed so that a low object to be cleaned can be placed in a substantially vertical direction, so that useless amount of water and energy are used, and the set of objects to be cleaned is limited. Therefore, by providing a part of the projected area of the lower car at the lower part of the upper and lower flow paths, the cleaning water is supplied from above to the object to be cleaned set at this position. It becomes possible to install a high object to be cleaned in a substantially vertical direction forward, and the number of objects to be cleaned can be increased, thereby improving usability.

  In addition, the arrangement of the objects to be cleaned in the lower basket is configured as a lower basket in which the objects to be cleaned are installed in a substantially vertical direction at the rear corner of the cleaning tank, so that the injection flow rate and the injection pressure can be made higher than before. It can be made smaller, saving water and saving energy.

  According to a third invention, in any one of the first and second inventions, in particular, the middle car is provided at a front portion of the upper car, and the middle car is interlocked with the upper car. What can be set in the cleaning tank together with the upper basket can be set the object to be cleaned at the same time as the upper basket, improving the setability and ease of use when setting the object to be cleaned in the lower basket It is.

  The upper and middle baskets are detachably fitted, so depending on the height of the object to be cleaned installed in the lower car, the installation position of the middle car can be changed. Variations will spread and usability will be improved. Further, since the middle car is provided in the upper car, the user can set the object to be cleaned with an easy posture.

  According to a fourth aspect of the present invention, in the first or second aspect of the invention, in particular, the middle basket is provided at the door portion, and the middle basket is always interlocked with the opening / closing operation of the cleaning tank by the door. As a result, the user operates the door to open the cleaning tank, and at the same time, the object to be cleaned can be set in the middle basket. Therefore, it is not necessary to pull out the entire cleaning tank, and the object to be cleaned can be set in the middle basket with a minimum operation, which improves usability.

  According to a fifth invention, in any one of the first to fourth inventions, in particular, a heating unit is provided in the lower tank substantially directly below the upper and lower flow paths. Since it passes, the heat exchange efficiency increases and the temperature rise time is shortened. Therefore, the cleaning water can quickly reach the predetermined temperature required for cleaning, and the cleaning performance can be improved, so that the cleaning time can be shortened. Moreover, in the drying process, in addition to the drying effect by hot air, the drying effect by radiant heat can be obtained with high efficiency. When the user wants to dry a small amount of the object to be cleaned quickly, a middle basket may be used, which improves usability.

The sixth invention is the invention according to any one of the first to fifth inventions, in particular, the receiving plate is provided with an inclined portion on the lower tank side, and the inclined portion is in the middle cage direction of the upper and lower flow paths. In the cleaning on the lower tank side, the cleaning water sprayed from the lower cleaning nozzle and reaching the lower surface of the receiving plate partially remains on the lower tank side of the receiving plate and Then, it flows along the inclined portion of the receiving plate and joins the upper and lower flow paths. Therefore, even when washing the lower tank side, a part of the washing water can be supplied to the middle basket, which can contribute to improvement of washing performance and save water.

According to a seventh invention, in any one of the first to sixth inventions, in particular, the receiving plate is provided with a convex guide part on a part of the lower tank side, and the guide part is the upper and lower flow path. In the cleaning of the lower tank side, the cleaning water sprayed from the lower cleaning nozzle and reaching the lower surface of the receiving plate is directed to the lower tank side of the receiving plate. Partly remains and flows along a guide provided in a convex shape on a part of the lower tank side, and joins the upper and lower flow paths. Therefore, even when washing the lower tank side, a part of the washing water can be supplied to the middle basket, which can contribute to improvement of washing performance and save water.

According to an eighth invention, in any one of the first to seventh inventions, in particular, the receiving plate is provided with a rib portion that protrudes substantially upward near an end portion in the vicinity of the door portion, It has an opening on the upstream side, and the middle basket is provided substantially below the opening. The circulating wash water of the upper tank flows on the receiving plate and reaches the inlet of the upper and lower flow paths. The washing water is biased toward the door by the force. By this flow, the cleaning water is supplied unevenly to the objects to be cleaned installed in the middle basket. Therefore, the inertia force of the wash water is temporarily reduced at the rib portion, and the wash water is sent from the opening provided on the upstream side of the flow to the upper and lower flow paths, so that the middle basket provided substantially below the opening. Can be supplied uniformly and uniformly with cleaning water. In addition, it is possible to efficiently use the circulating cleaning water and improve the cleaning performance, thereby saving water and saving time.

According to a ninth aspect of the present invention, in any one of the first to eighth aspects, in particular, the upper cleaning nozzle includes an in-nozzle cleaning flow path for feeding cleaning water pressurized and supplied from the cleaning pump; A plurality of first injection ports provided above the cleaning flow path in the nozzle and sprayed toward the upper basket, and at least one sprayed toward the middle basket provided below the cleaning flow path in the nozzle The second injection port has the above-described second injection port. The second injection port is injected from the upper cleaning nozzle at a high pressure and a small flow rate, and on the other hand, the second injection port is injected from the first injection port and flows upward and downward from the receiving plate 9. The circulating wash water flowing into the tank has a low pressure and large flow rate. If the dirt adhering to the object to be cleaned is strong due to the injection of cleaning water with different characteristics, use high-pressure washing water, and if there is much dirt adhering to the object to be cleaned, a large flow of washing water Can be cleaned efficiently and in a short time.

According to a tenth aspect of the present invention, in any one of the first to ninth aspects, the upper and lower flow paths have a detergent case for introducing a detergent, and the detergent case is located substantially above the middle basket. Even if the object to be cleaned with strong dirt attached to the middle basket is set, the washing water is supplied to the middle basket through the detergent container provided in the upper and lower flow paths. The object to be cleaned can be exposed to the detergent water, and the cleaning performance is improved. The user can set an object to be cleaned that is firmly soiled in the middle basket, and the number of opportunities for under-washing is reduced, improving usability.

In an eleventh aspect of the invention, in any one of the first to tenth aspects of the invention, in particular, the drying section provided in the cleaning tank is provided in a substantially front part of the lower tank, and is substantially in the rear of the lower tank. Since the flow path from the lower tank to the upper tank is only the vertical flow path, the vertical flow path is significantly smaller than the projected cross-sectional area when viewed from above the lower tank. Then, the flow rate of the drying air is rapidly increased. In addition, since all the amount of the dry air blown to the lower tank passes through the upper and lower flow paths, the object to be cleaned set in the middle basket is intensively exposed to the dry air having a high flow rate. Therefore, drying performance is improved, and energy saving and time saving during drying can be achieved. When the user wants to dry a small amount of the object to be cleaned quickly, a middle basket may be used, which improves usability. In addition, the hot air is diffused in the lower tank so that the hot air from the drying section is not directly blown into the upper and lower flow paths, so that the hot air is diffused in the lower tank, and the drying performance is improves.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
1 is a schematic cross-sectional view of the dishwasher according to Embodiment 1 of the present invention, FIG. 2 is a schematic cross-sectional view showing another arrangement of an object to be cleaned set in the lower basket of the dishwasher, and FIG. 3 is the same dishwasher. It is the cross-sectional schematic which showed the state which pulled out the door part of this, and arrangement | positioning of a middle stage cage | basket. In FIG. 1 to FIG. 3, a washing tub 3 having an opening that can be opened and closed by pulling and pushing the door 5 back and forth is provided in the body 2 of the dishwasher installed in a cabinet 1 such as a kitchen. ing. The inside of the cleaning tank 3 is divided into an upper tank 6 and a lower tank 7 by a receiving plate 9, and an object to be cleaned 4 such as tableware is provided in an upper basket 10 and a lower tank 7 in the upper tank 6. It is set in the lower car 11 and accommodated in the cleaning tank 3.

  The lower tank 7 is configured integrally with the door portion 5. When the door portion 5 is moved back and forth, the lower tank 7 is supported by the lower tank support rail 8 provided on the side surface of the main body 2 and is integrated with the door portion 5. To move back and forth. Accordingly, the lower car 11 is pulled out simultaneously with the opening operation of the door portion 5. On the other hand, the upper tank 6 remains in the main body 2 without being interlocked with the operation of the door portion 5. The upper car 10 is supported by an upper car rail (not shown), and only the upper car 10 can be moved back and forth. As shown in the figure, since the capacity of the lower car 11 is large and space is taken in the height direction, consideration is first given so that the article 4 to be cleaned can be set from the lower car 11. It is. Since the upper car 10 is not interlocked with the lower car 11 and can be freely moved back and forth, the upper car 10 can be a car having substantially the same area as the lower car 11.

  Also, if the number of objects to be cleaned 4 is small or small, it is easier to set the posture in the upper car 10, so a fitting part is provided on the door 5 and the upper car 10, The upper car 10 may be operated in conjunction with the operation of the door 5. The fitting portion may be configured to select whether the upper car 10 is interlocked from the outside of the door portion 5 in accordance with the form used by the user.

  The left and right side surfaces of the upper tank 6 and the lower tank 7 are formed by an upper side plate 14 and a lower side plate 15, respectively, and are inclined in the front-rear direction so that the lower tank 7 can be pulled out. Each of the rear surfaces is composed of an upper back plate 17 and a lower back plate 18. When the door 5 is operated and the lower tank 7 is stored in the cleaning tank 3, the left and right sides of the upper tank 6 and the lower tank 7 are left and right. The side surface and the back surface are fitted by the fitting unit 16. The fitting part 16 has a labyrinth structure with an elastic packing such as rubber and elastomer, and prevents the washing water from leaking outside.

Since the lower side 15 of the side surface of the lower tank 7 is formed with a height substantially less than half the height of the cleaning tank 3, the user can set the object to be cleaned 4 on the lower basket 11 from the side and is easy to use. Is good. A water supply valve (not shown) is opened and closed by the control unit, and supplies tap water as cleaning water to the cleaning tank 3.

  The cleaning pump 21 is attached in close contact with the bottom wall of the cleaning tank 3, pressurizes cleaning water stored in the bottom of the cleaning tank 3, and communicates with the discharge port of the cleaning pump 21. 29 to the upper cleaning nozzle 12 via the lower cleaning flow path 30 and to the lower cleaning nozzle 13, and a plurality of upper cleaning nozzle jets 34 on the upper cleaning nozzle 12 and a plurality of lower on the lower cleaning nozzle 13. The cleaning object 4 is cleaned by spraying cleaning water from the cleaning nozzle injection port 35. The cleaning water sprayed onto the object to be cleaned 4 includes a cleaning liquid for cleaning the object to be cleaned and rinse water for rinsing the object to be cleaned 4.

  The upper cleaning nozzle 12 and the lower cleaning nozzle 13 are fitted in bearing fitting portions provided in the upper cleaning flow passage 29 and the lower cleaning flow passage 30, respectively, and the washing water leaks at the bearing fitting portion while being rotatably supported. In order to avoid this, each cleaning nozzle and the bearing fitting portion ensure a seal configuration while rubbing between flat surfaces.

  The upper cleaning flow path 29 includes an upper cleaning flow path A31 provided in the upper tank 6 and an upper cleaning flow path B32 provided in the lower tank 7. When the lower tank 7 is stored in the cleaning tank 3, the upper cleaning flow path A 31 and the upper cleaning flow path B 32 are connected to each other at the connection portion 40 in the lower tank 7. The connecting portion 40 has a labyrinth structure with an elastic packing such as rubber and elastomer, and the washing water does not leak into the lower tank 7.

  The valve body 33 is inserted in the upper cleaning flow path A31, and the cleaning water in the upper cleaning nozzle 12 and the upper cleaning flow path A31 remains even if the flow path is disconnected when the door 5 is opened. It is prevented from leaking backflow. Further, a flow path water receiving portion 20 is provided in the vicinity of the connecting portion 40 so that the cleaning water does not leak outside the cleaning tank 3. The washing water collected by the channel water receiving unit 20 may be returned to the lower tank 7 through a communication part with the lower tank 7.

  The upper surface of the receiving plate 9 is inclined downward in the direction of the door 5, and the upper tank 6 and the lower tank 7 are communicated by providing an upper and lower flow path 23 between the front end and the door 5. . The receiving plate 9 is configured such that when the lower tank 7 is pulled out, the cleaning water remaining in the article 4 to be cleaned of the upper tank 6 does not leak out of the cleaning tank 3. 5 is pulled out to the maximum, it is located in front of the main body water receiving part 19 provided on the back of the lower tank 7, that is, overlaps with the main body water receiving part 19, and the remaining dripping from the upper tank 6 The water is always collected in the lower tank 7 by the main body water receiver 19. As shown in the figure, the upper and lower flow paths 23 are provided with a middle car 24 positioned below the receiving plate 9.

  Further, the bottom of the cleaning tank 3 has a drain port 25 communicating with the suction side of the cleaning pump 21 and the drain pump 22. The drain port 25 has a drain filter 26 for collecting residue and a drain filter 26. A residual filter 27 having a fine aperture is provided. The residue filter 27 is detachable, and the residue collected after removal can be discarded.

  A heating unit 28 for heating the cleaning water is provided on the bottom surface of the cleaning tank 3, and a temperature sensor (not shown) for detecting the temperature of the cleaning water in the cleaning tank 3 is provided on the bottom outer wall of the cleaning tank 3. It has been.

  The drying unit 36 is provided in the lower tank 7, and includes a blowing unit 37, a drying path 38, and a blowing port 39. The sucked outside air is blown out from the blowing port 39 into the cleaning tank 3 through a filter (not shown). Then, the air is changed to warm air through the heating unit 28 and exhausted to the outside from an exhaust port (not shown) provided in the upper tank 6.

  In the above configuration, first, the basic operation of the dishwasher will be described. The object to be cleaned 4 such as tableware is set in the upper basket 10, the lower basket 11 and the middle basket 24, stored in the washing tub 3, and after the detergent is poured in, the door 5 is pushed in and the door 5 is used for the main body of the dishwasher The opening of 2 is closed and the operation is started. A cleaning process for removing dirt on the object to be cleaned 4, a rinsing process for pouring the attached detergent and residue, and a drying process for drying water droplets adhering to the object 4 to be cleaned are performed in this order.

  First, the water supply valve is operated to supply a predetermined amount of tap water as cleaning water into the cleaning tank 3, and then the cleaning water is pressurized by the cleaning pump 21, and the upper cleaning nozzle injection port 34 and the lower cleaning nozzle 12. Cleaning water is sprayed from the lower cleaning nozzle injection port 35 of the cleaning nozzle 13. The lower cleaning nozzle 13 injects cleaning water toward the object to be cleaned 4 set in the lower car 11 and the middle car 24, and the upper cleaning nozzle 12 injects cleaning water toward the object to be cleaned 4 set in the upper car 10, respectively. To do. At this time, the heating unit 28 such as a sheathed heater provided on the bottom surface in the cleaning tank 3 is energized, and the cleaning process is performed while heating the cleaning water. Further, a temperature sensor such as a thermistor provided on the bottom outer wall of the cleaning tank 3 detects the temperature of the cleaning water in the cleaning tank 3, and is controlled to stop energization to the heating unit 28 when the temperature exceeds a predetermined temperature. The

  The circulation of the wash water on the lower tank 7 side is performed by washing or rinsing the object 4 to be washed provided in the lower car 11 and the middle car 24 located in the upper and lower flow path 23 after being sprayed from the lower washing nozzle 13. 25 passes through the residual filter 27 and the drainage filter 26 installed in 25, is sucked into the cleaning pump 21, passes through the lower cleaning flow path 30 from the cleaning pump 21, and is provided at the lower bottom of the lower tank 7. 13 is supplied. At this time, the residue or the like dropped off from the article 4 to be cleaned flows into the residue filter 27 together with the cleaning water, and the residue having a size that cannot pass through the filter is collected by the residue filter 27. Since the lower tank 7 and the upper tank 6 are partitioned by the receiving plate 9, the cleaning water sprayed from the lower cleaning nozzle 13 hardly flows into the upper tank 6.

  In the circulation of the cleaning water on the upper tank 6 side, the cleaning water pressurized by the cleaning pump 21 passes through the upper cleaning channel 29 and is supplied to the upper cleaning nozzle 12 provided in the upper tank 6. Then, after being sprayed from the upper cleaning nozzle 12, the object 4 to be cleaned provided on the upper car 10 is cleaned or rinsed, passing through the up-and-down flow path 23 provided between the receiving plate 9 and the door portion 5, The object 4 to be cleaned provided in the middle basket 24 is cleaned or rinsed, passes through the residual filter 27 and the drain filter 26 installed in the drain port 25, and is sucked into the cleaning pump 21. In the circulation of the cleaning water in the upper tank 6, the cleaning object 4 installed in the lower tank 7 is configured so that the cleaning water hardly hits it.

  Further, in FIG. 1, the upper cleaning nozzle 12 is provided between the receiving plate 9 and the upper basket 10, but the upper cleaning nozzle injection port 34 is directed substantially downward above the upper tank 6 and the upper basket 10. May be installed. The upper cleaning nozzle 12 and the lower cleaning nozzle 13 are provided so as to inject the upper cleaning nozzle injection port 34 and the lower cleaning nozzle injection port 35 in the direction opposite to the rotation direction. Each of the nozzles may spray the cleaning water without rotating.

  When the cleaning process for a predetermined time is completed, the cleaning water containing dirt is discharged out of the machine by the drain pump 22 and the cleaning water is newly supplied by the water supply valve. Next, the cleaning pump 21 is operated, and cleaning water is sprayed again from the upper cleaning nozzle 12 and the lower cleaning nozzle 13 to rinse the object 4 to be cleaned such as detergent and residue. After the operation for a predetermined time, the operation of discharging the washing water by the drain pump 22 and supplying the washing water again is repeated, and this rinsing process is continuously performed about three times. Finally, the washing water is discharged out of the main body 2 of the dishwasher by the drain pump 22, and the rinsing process is completed.

Subsequently, a drying process is performed. In the drying process, the air blowing unit 37 such as a rotary fan provided in the drying unit 36 is driven by a motor, so that the outside air sucked from a filter (not shown) in contact with the outside air is blown through the drying path 38. Air is blown into the lower tank 7 through the port 39. At that time, the blown outside air passes through the energized heating unit 28 and becomes warm air. The warm air passes through the lower tank 7 and then passes through the upper and lower flow paths 23 and is blown into the upper tank 6. At this time, since warm air intensively passes through the middle basket 24, the drying performance of the middle basket 24 is also improved. The warm air that has reached the upper tank 6 from the upper and lower flow paths 23 dries the object to be cleaned 4 installed in the upper basket 10, and the main body of the dishwasher from an exhaust port (not shown) provided in the upper tank 6. 2 Exhaust outside. After operating for a predetermined time, the drying process is terminated and the operation is terminated.

  Conventionally, a special nozzle was required to wash the items to be cleaned, including a cutlery basket with a spoon and fork set, but the upper and lower flow passages 23 between the receiving plate 9 and the door 5 have a middle basket. By providing 24, the cleaning water in the upper tank 6 is collected by the cleaning pump 21 when the object 4 to be cleaned provided in the upper car 10 is cleaned, and therefore passes through the upper and lower flow paths 23. Therefore, the cleaning performance is improved by constantly exposing the article 4 to be cleaned installed in the middle basket 24 to the recovered cleaning water. By using the circulating wash water for washing, the amount of wasted water is saved and the water saving effect is obtained.

  Further, since the cleaning circulation paths of the upper tank 6 and the lower tank 7 are independent from each other, a valve body for switching the upper cleaning flow path 29 and the lower cleaning flow path 30 is provided on the discharge side of the cleaning pump 21. If the number of objects to be cleaned 4 is small, the user can select and operate only one of the tanks. In addition to saving the amount of wasted water, it can save water and save energy, and improve usability.

  In addition, as shown in FIG. 2, the lower car 11 may be provided so that a part of the projected area when viewed from above is located below the upper and lower flow paths 23. By configuring in this way, the circulating wash water of the upper car 10 can also be used for washing the article 4 to be cleaned installed in a part of the lower car 11.

  Further, since the lower basket 11 is cleaned by the rotating lower cleaning nozzle 13, the cleaning water supplied to the article 4 to be cleaned installed at the four corners of the lower basket 11 on the locus of the nozzle is the lower cleaning nozzle. It was necessary to increase the injection angle from 13 from the substantially vertical upward direction to the horizontal direction. However, when cleaning an object 4 to be cleaned that is high in a substantially vertical direction, if the injection angle of the cleaning water is large, it is difficult for the cleaning water to reach the top of the object 4 to be cleaned. Since the flow shape and the injection pressure are increased or the lower car 11 is arranged at the four corners of the lower car 11 so that the object 4 to be cleaned can be placed in a substantially vertical direction, wasteful water and energy are used, The set of 4 was also limited.

  Therefore, a configuration in which a part of the projected area of the lower car 11 is provided below the upper and lower flow paths 23, that is, a structure in which a part of the lower car 11 is positioned immediately below the upper and lower flow paths 23 is set at this position. Since the cleaning water is also supplied to the object 4 to be cleaned from above, it is possible to install a high object 4 to be cleaned in a substantially vertical direction in front of the cleaning tank 3. The number of types will increase and usability will improve.

  Further, the arrangement of the object 4 to be cleaned in the lower basket 11 is configured such that the object 4 to be cleaned is installed in the rear corner of the cleaning tank 3 so that the object 4 to be cleaned is arranged in a substantially vertical direction. The injection flow rate and the injection pressure of the cleaning water from the cleaning nozzle 13 can be reduced, water saving and energy saving effects can be obtained, and the restriction of the set position on the lower basket 11 of the object to be cleaned 4 can be eliminated.

The middle car 24 can be configured to be provided on the upper car 10 or the door part 5, and is equivalent in terms of cleaning performance as long as it is positioned in the upper and lower flow paths 23 in a state where the door part 5 is pushed in. However, the configuration provided in the upper car 10 and the configuration provided in the door 5 have the following specific effects.

  As shown in FIG. 3, in the configuration in which the middle car 24 is detachably provided at the front portion of the upper car 10, the middle car 24 is interlocked with the upper car 10, so In addition to being able to be set, it can be stored in the cleaning tank 3 together with the upper car 10, so that when the article 4 to be cleaned is set in the lower car 11, setability is improved and usability is improved.

  In addition, since the upper car 10 and the middle car 24 are detachably fitted, the installation position of the middle car 24 can be changed depending on the height of the article 4 to be cleaned installed in the lower car 11. As a result, the variation of the object to be cleaned 4 is widened and the usability is improved.

  In addition, since the middle car 24 is provided in the upper car 10, the user can set the article 4 to be cleaned with an easy posture.

  Further, by making the middle basket 24 detachable, the maintainability such as cleaning of the middle basket 24 is improved, and the usability is also improved.

  As shown in FIG. 4, in the configuration in which the middle basket 24 is provided in the door portion 5, the middle basket 24 is always interlocked with the opening / closing operation of the cleaning tank 3 by the door portion 5, so that the user operates the door portion 5. As a result, the object to be cleaned 4 can be set in the middle car 24 at the same time as the cleaning tank 3 is opened. Therefore, it is not necessary to draw out all the cleaning tank 3, and the object 4 to be cleaned can be set in the middle basket 24 with a minimum operation, which improves usability.

  In addition, the heating part 28 such as a sheathed heater has an effective part formed in a U shape with a long straight part 28a, and in FIG. 1, the straight part 28a is arranged in the horizontal front-rear direction of the cleaning tank 3. As shown in FIG. 5, the straight portion 28 a is arranged so as to be in the horizontal left and right direction of the cleaning tank 3, and the heating unit 28 is provided in the lower tank 7 portion substantially directly below the middle basket 24 of the upper and lower flow path 23. Also good. If comprised in this way, since circulating washing water passes the heating part 28, heat exchange efficiency will rise and temperature rising time will be shortened. Therefore, the cleaning water can quickly reach the predetermined temperature required for cleaning, and the cleaning performance can be improved, so that the cleaning time can be shortened. Further, when the upper and lower tanks are separately washed with a configuration in which a valve body or a water diversion part for switching the upper washing flow path 29 and the lower washing flow path 30 is provided, only washing for supplying washing water into the upper tank 6 is performed. However, the same effect can be obtained.

  Moreover, in the drying process, in addition to the drying effect by hot air, the drying effect by radiant heat can be obtained with high efficiency. If the user wants to dry a small amount of the object to be cleaned 4 quickly, the middle basket 24 may be used, which improves usability.

  Further, as shown in FIG. 6, a second upper and lower flow path 41 may be provided between the side surface of the receiving plate 9 and the cleaning tank 3. If comprised in this way, it will become possible to set the big to-be-washed objects 4, such as a cutting board, in the lower cage | basket | car 11 and the 2nd up-and-down flow path 41, In such a case, a part of circulating wash water passes. Therefore, the second up-and-down flow path 41 contributes to the improvement of the cleaning performance, and by using the circulating cleaning water for cleaning, a wasteful amount of water is saved and a water saving effect is obtained.

Further, the receiving plate 9 causes the upper surface to incline forward downward toward the door portion 5, guides the wash water sprayed in the upper tank 6 to the upper and lower flow paths 23, and collects and circulates it in the lower tank 7. On the other hand, the lower surface may be configured as a substantially horizontal surface as shown in FIG. 1, but as shown in FIG. 7, a receiving plate inclined portion 42 (inclined forwardly toward the door portion 5). An inclined portion) may be provided, and the receiving plate inclined portion 42 may be configured to be inclined in the direction of the middle car 24 of the upper and lower flow path 23. With this configuration, in the cleaning on the lower tank 7 side, the cleaning water sprayed from the lower cleaning nozzle 13 and reaching the lower surface of the receiving plate 9 partially remains on the lower tank 7 side of the receiving plate 9 and Then, it flows along the receiving plate inclined portion 42 of the receiving plate 9 and is guided to the upper and lower flow paths 23 to join. Therefore, even during cleaning on the lower tank 7 side, a part of the cleaning water can be guided and supplied to the middle basket 24 by the receiving plate inclined portion 42, so that it is possible to contribute to improvement of the cleaning performance and save water.

  As shown in FIG. 8, the receiving plate 9 is provided with a guide portion 43 that is protruded downward in a part on the lower tank 7 side, and the guide portion 43 is in the direction of the middle basket 24 in the vertical channel 23. It may be configured to incline forward and downward. With this configuration, in the cleaning on the lower tank 7 side, the cleaning water sprayed from the lower cleaning nozzle 13 and reaching the lower surface of the receiving plate 9 partially remains on the lower tank 7 side of the receiving plate 9 and Then, it flows along a guide portion 43 provided in a convex shape on a part of the lower tank 7 side, and is guided to the upper and lower flow paths 23 to join. Therefore, even during the cleaning of the lower tank 7 side, a part of the cleaning water can be guided and supplied to the middle basket 24 by the guide portion 43, which can contribute to the improvement of the cleaning performance and save water.

  As shown in FIG. 9, the receiving plate 9 is provided with a rib portion 44 that protrudes substantially upward near the end portion in the vicinity of the door portion 5, and is upstream of the rib portion 44 (in this embodiment, a cleaning tank). 3 may be provided with an opening 45 that allows the upper tank 6 and the lower tank 7 to communicate with each other, and a middle basket 24 may be provided substantially below the opening 45. When the circulating cleaning water in the upper tank 6 flows on the receiving plate 9 and reaches the inlet of the upper and lower flow path 23, the cleaning water flows biased toward the door portion 5 due to inertial force. By this flow, the cleaning water is supplied non-uniformly to the objects to be cleaned 4 installed in the middle basket 24. Therefore, the inertia force of the cleaning water is once weakened by the rib portion 44 by the above-described configuration, and the cleaning water is flowed from the opening 45 provided on the upstream side of the flow to the upper and lower flow paths 23, so that the opening 45 The washing water can be uniformly and uniformly supplied to the middle basket 24 provided substantially below. Circulating water can be used efficiently and cleaning performance can be improved to save water and save time.

  As shown in FIG. 10, the upper cleaning nozzle 12 is provided above the in-nozzle cleaning flow path for feeding the cleaning water pressurized and supplied from the cleaning pump 21, and sprays toward the upper basket 10. In addition to the plurality of upper cleaning nozzle injection ports 34 (first injection ports), the second upper cleaning is provided below the in-nozzle cleaning flow path and includes at least one or more spraying toward the middle basket 24. You may have the nozzle injection port 46 (2nd injection port). The second upper cleaning nozzle injection port 46 is injected from the upper cleaning nozzle 12 at a high pressure and a small flow rate. On the other hand, the circulating cleaning water injected from the upper cleaning nozzle injection port 34 and flowing from the receiving plate 9 to the upper and lower flow paths 23 is low pressure. Large flow rate. With this configuration, when the dirt adhering to the object to be cleaned 4 is strong due to the injection of the cleaning water having different characteristics, the dirt adhering to the object to be cleaned 4 with the high-pressure washing water. When there are many, it can wash | clean with a large flow of washing water, Therefore It can wash | clean efficiently and in a short time.

  Further, the second upper cleaning nozzle injection port 46 may be the same as the rotation promotion injection port of the upper cleaning nozzle 12. If comprised in this way, wash water can be sprayed toward the to-be-cleaned object 4 set to the upper cage | basket | car 10 from all the injection nozzles, and cleaning performance improves. Therefore, water saving and time saving can be achieved.

  Further, as shown in FIG. 11, the upper and lower flow paths 23 may have a detergent container 47 into which detergent is introduced, and the detergent container 47 may be configured to be positioned substantially above the middle basket 24. By configuring in this way, even if an object to be cleaned 4 having strong dirt adhered to the middle basket 24 is set, the washing water passes through the detergent container 47 provided in the upper and lower flow paths 23 and the washing water is fed to the middle basket. Therefore, the cleaning object 4 can be exposed to high-concentration detergent water, and the cleaning performance is improved. The user can set the object 4 to be cleaned, which is strongly soiled, in the middle basket 24, and can reduce the chances of under-washing, improving usability.

As shown in FIG. 12, the drying unit 36 provided in the cleaning tank 3 is provided substantially in the front part of the lower tank 7, and is substantially in the lower tank 7 from the air blowing port 39 provided in the lower front portion of the lower tank 7. It is set as the structure which has the ventilation part 37 which ventilates toward back. Since the flow path from the lower tank 7 to the upper tank 6 is only the vertical flow path 23, the flow velocity of the drying air in the vertical flow path 23 that is remarkably smaller than the projected cross-sectional area when viewed from above the lower tank 7. Becomes faster and faster. Further, since all the amount of the dry air blown to the lower tank 7 passes through the upper and lower flow passages 23, the cleaning object 4 set in the middle basket 24 is intensively exposed to the dry air having a high flow rate. It is. Therefore, drying performance is improved, and energy saving and time saving during drying can be achieved. When the user wants to quickly dry a small amount of the object to be cleaned, the middle basket 24 may be used, which improves usability.

  Further, by configuring in this way and blowing the air substantially behind the receiving plate 9 having no flow path to the upper tank 6 so that the warm air from the drying unit 36 is not directly blown to the upper and lower flow paths 23, Warm air is also diffused in the tank 7 and the drying performance is improved.

  Further, as shown in FIG. 13, a middle-stage residual filter 48 may be provided in the vicinity of the front end portion of the receiving plate 9 and the door portion 5. When cleaning the article 4 to be cleaned set in the upper car 10, the cleaning water in the upper tank 6 is collected by the cleaning pump 21 and passes through the upper and lower flow paths 23. Circulating wash water always passes through the middle stage residue filter 48, and the residue can be collected efficiently. Therefore, the residue of the article 4 to be cleaned set on the upper car 10 does not adhere again to the object 4 to be cleaned set on the lower car 11, and the cleaning performance, particularly the rinsing performance is improved. By improving the rinsing performance, the amount of wasted water can be saved and a water saving effect can be obtained. Moreover, since the dirt of the cleaning object 4 set in the upper basket 10 of the upper tank 6 can be quickly collected, it also has a time-saving effect. Further, since the middle stage residual filter 48 is provided at a high position in the cleaning tank 3, the usability is improved. Further, the upper-stage residual filter 48 may be provided in the upper car 10.

  Moreover, although the structure provided in the front end part or upper cage | basket | car 10 of the receiving plate 9 and the structure provided in the door part 5 is possible for the middle stage residual filter 48, as shown in FIG. In this case, since the middle stage residual filter 48 is always interlocked with the opening / closing operation of the cleaning tank 3 by the door part 5, the user operates the door part 5 to open the cleaning tank 3, and at the same time, the middle stage residual filter 48 is removed. It can be removed. Therefore, it is not necessary to pull out all of the cleaning tank 3, and the filter 48 can be removed from the middle stage with a minimum operation, which improves usability. Moreover, even if the opening / closing operation of the cleaning tank 3 is performed, water drops of the residue and middle residue filter 48 are not dripped onto the article 4 to be cleaned set in the lower basket 11, so that an excellent hygienic effect is obtained.

  Further, as shown in FIG. 15, the middle stage residual filter 48 may be provided in the lower tank 7 positioned substantially below the upper and lower flow paths 23. If comprised in this way, the residual filter of an upper and lower tank can be combined. When cleaning the article 4 to be cleaned set in the upper car 10, the cleaning water in the upper tank 6 is collected by the cleaning pump 21 and passes through the upper and lower flow paths 23. Circulating wash water always passes through the middle stage residue filter 48, and the residue can be collected efficiently.

  On the other hand, when the object 4 to be cleaned set in the lower car 11 is cleaned, the cleaning water in the lower tank 7 is collected by the cleaning pump 21, so that the middle-stage residual filter 48 is provided regardless of the upper tank 6. pass. Therefore, the cleaning performance, in particular, the rinsing performance can be improved with one residue filter without the residue of one tank being sent to the other tank. By improving the rinsing performance, the amount of wasted water can be saved and a water saving effect can be obtained.

Further, in the configuration in which the middle stage residual filter 48 is provided in the vicinity of the front end portion of the backing plate 9 and the door portion 5, as shown in FIG. 16, the backing plate 9 is placed on the lower surface on the lower tank 7 side in the direction of the door portion 5. A receiving plate inclined portion 42 inclined forward and downward may be provided, and the receiving plate inclined portion 42 may be inclined forward and downward in the direction of the filter 48 in the middle of the upper and lower flow paths 23. With this configuration, in the cleaning on the lower tank 7 side, the cleaning water sprayed from the lower cleaning nozzle 13 and reaching the lower surface of the receiving plate 9 partially remains on the lower tank 7 side of the receiving plate 9 and Then, it flows along the receiving plate inclined portion 42 of the receiving plate 9 and is guided to the upper and lower flow paths 23 to join. Therefore, even when the lower tank 7 is cleaned, a part of the cleaning water can be guided and supplied to the middle residue filter 48, so that it is possible to contribute to improvement of the cleaning performance and save water. Further, the middle-stage residue filter 48 is changed from the residue filter 27 for the lower tank 7 and the size and shape of the opening to improve the collection performance and the performance at the time of rinsing, thereby saving water. .

  Further, in the configuration in which the middle stage residual filter 48 is provided in the vicinity of the front end portion of the backing plate 9 and the door portion 5, as shown in FIG. 17, the backing plate 9 protrudes downward in a part on the lower tank 7 side. A guide portion 43 that is suspended in a shape may be provided, and the guide portion 43 may be inclined forward and downward in the direction of the filter 48 in the middle of the upper and lower flow paths 23. With this configuration, in the cleaning on the lower tank 7 side, the cleaning water sprayed from the lower cleaning nozzle 13 and reaching the lower surface of the receiving plate 9 partially remains on the lower tank 7 side of the receiving plate 9 and Then, it flows along a guide portion 43 provided in a convex shape on a part of the lower tank 7 side, and is guided to the upper and lower flow paths 23 to join. Accordingly, part of the cleaning water is guided and supplied to the middle stage residual filter 48 even during the cleaning of the lower tank 7 side, which can contribute to the improvement of the cleaning performance and can save water.

  Further, in the configuration in which the middle stage residual filter 48 is provided in the vicinity of the front end portion of the receiving plate 9 and the door portion 5, the receiving plate 9 is substantially upward near the end portion in the vicinity of the door portion 5 as shown in FIG. 18. A convex rib portion 44 may be provided, and an opening 45 may be provided on the upstream side of the rib portion 44 (in the present embodiment, the back side of the cleaning tank 3) to allow the upper tank 6 and the lower tank 7 to communicate with each other. When the circulating cleaning water in the upper tank 6 flows on the receiving plate 9 and reaches the inlet of the upper and lower flow path 23, the cleaning water flows biased toward the door portion 5 due to inertial force. By this flow, the cleaning water is supplied non-uniformly to the middle stage residual filter 48. Therefore, the inertia force of the cleaning water is once weakened by the rib portion 44 by the above-described configuration, and the cleaning water is flowed from the opening 45 provided on the upstream side of the flow to the upper and lower flow paths 23, so that the opening 45 Washing water can be uniformly and uniformly supplied to the middle stage residual filter 48 provided substantially below. Since the residue concentrates on a part of the openings of the middle-stage residue filter 48 and does not become clogged, it is excellent in collecting the residue, the circulating wash water can be used efficiently, and the rinsing performance is improved. , Save water and save time.

  Further, as shown in FIG. 19, a water diversion part 49 may be provided between the upper and lower cleaning nozzles 12 and 13 and the cleaning pump 21. By the water diversion part 49, the upper washing flow path 29 and the lower washing flow path 30 are switched, and the injection from the upper washing nozzle 12 and the lower washing nozzle 13 is selectively switched. FIG. 20 is a cross-sectional view of the water divider 49. The water diversion unit 49 includes a pump discharge-side flow channel 50 that communicates with the discharge side of the cleaning pump 21, and a valve body that includes an opening portion and a closing portion that switch the flow passage inlets of the upper cleaning flow passage 29 and the lower cleaning flow passage 30. 51, a rotating shaft 52 that supports the valve body 51, and a motor 53 that drives the rotating shaft 52. Wash water flows from the pump discharge side flow path 50 into the water diversion section 49, and one or both of the upper wash flow path 29 and the lower wash flow path 30 from the flow path inlet located at a position coincident with the opening of the valve body 51. The water is switched to. Here, the water diversion unit 49 is configured to be switched by driving by the motor 53, but may be configured to be switched by changing the water pressure by driving and stopping the cleaning pump 21.

  As described above, the dirt (residue) removed from the article 4 to be cleaned set in the upper car 10 of the upper tank 6 can be prevented from flowing into the lower tank 7 by the middle residue filter 48. Therefore, only the upper tank 6 can be operated, and the upper and lower parts can be washed separately. When the user cleans a small amount of the object 4 to be cleaned, either one of the tanks may be used, and the tank can be cleaned with a small amount of cleaning water, and energy saving and time saving effects can be obtained by saving water.

Further, when only the article 4 to be cleaned in the upper tank 6 is cleaned, it is only necessary to maintain the middle-stage residual filter 48, and since it is provided at a high position in the cleaning tank 3, it is easy to use.

  In addition, even if the object to be cleaned 4 is set in either the upper tank 6 or the lower tank 7, it is possible to perform intensive cleaning by switching the top and bottom alternately, and the cleaning pressure is lowered. It is possible to wash with a small amount of washing water, saving water and saving energy and saving time.

  In the configuration shown in FIG. 1, the drainage port 25 is arranged behind the upper and lower flow paths 23, but as shown in FIG. 21, between the receiving plate 9 and the door portion 5 or the door. The drain port 25 may be provided in the lower tank 7 located substantially below the up-and-down flow path 23 for flowing the washing water of the upper tank 6 provided in the vicinity of the section 5 to the lower tank 7. When the object to be cleaned 4 provided in the upper basket 10 is cleaned by providing the drain port 25 in the lower tank 7 positioned substantially below the upper and lower flow path 23 between the receiving plate 9 and the door portion 5, the upper tank Since the cleaning water 6 is collected by the cleaning pump 21, it passes through the upper and lower flow paths 23. Therefore, since the circulating cleaning water is sent to the drain port 25 at the shortest distance, the useless amount of water flowing through the path is saved and a water saving effect is obtained.

  Further, a drainage filter 26 for collecting the residue washed from the object to be cleaned 4 is provided at the upper part of the drainage port 25, and the drainage filter 26 is substantially below the upper and lower flow paths 23 as shown in FIG. A part of the drainage filter 26 located in the position may be closed. When the circulating cleaning water in the upper tank 6 is directly recovered from the upper and lower flow paths 23 to the drain port 25, it collides with the cleaning water staying in the drain port 25 and the wall surface of the cleaning tank 3, and bubbles are generated. When the bubbles are sucked from the drain port 25 and are supplied to the cleaning pump 21 in large quantities, air is spilled in the cleaning pump 21 and a predetermined cleaning pressure cannot be injected.

  By providing the lattice closing portion 55 in a part of the drainage filter lattice 54 of the drainage filter 26 in the vicinity where the water flow directly collides from the upper and lower flow paths 23, it is possible to reduce the impact caused by the collision of the water flow and By providing the lattice closing portion 55 on the suction port 25a that is provided in the drainage port 25 and communicates with the cleaning pump 21, it is possible to make it difficult for air bubbles to be directly sucked. Therefore, since the water level at which air leakage occurs can be lowered, the washing pressure of washing water can be ensured even if the amount of water used is reduced, so that a water saving effect is obtained.

  Further, in the configuration in which the drain port 25 is provided in the lower tank 7 positioned substantially below the upper and lower flow path 23, as shown in FIG. 23, the receiving plate 9 is arranged on the lower surface on the lower tank 7 side in the direction of the door portion 5. A receiving plate inclined portion 42 inclined forward and downward may be provided, and the receiving plate inclined portion 42 may be inclined forward and downward in the direction of the drain port 25 located substantially below the upper and lower flow paths 23. According to this configuration, the cleaning water sprayed from the lower cleaning nozzle 13 and reaching the lower surface of the receiving plate 9 falls to the lower tank 7 in the cleaning on the lower tank 7 side, but a part of the receiving plate 9 And partly flows along the receiving plate inclined portion 42 of the receiving plate 9 and is guided to the upper and lower flow paths 23 to join. Therefore, even during the cleaning of the lower tank 7 side, the cleaning water of the lower cleaning nozzle 13 reaching the receiving plate 9 is also efficiently collected in the drain port 25 by the receiving plate inclined portion 42 of the receiving plate 9, so that the cleaning operation is being performed. The water level of the drain outlet 25 becomes higher. Therefore, the margin of air leakage to the cleaning pump 21 is increased, and the amount of water used corresponding to the increased water level can be reduced, thereby obtaining a water saving effect.

Further, in the configuration in which the drain port 25 is provided in the lower tank 7 positioned substantially below the upper and lower flow path 23, as shown in FIG. 24, the receiving plate 9 is convex downward in a part on the lower tank 7 side. The guide part 43 may be provided so that the guide part 43 is inclined forward and downward in the direction of the drain port 25 located substantially below the upper and lower flow paths 23. According to this configuration, the cleaning water sprayed from the lower cleaning nozzle 13 and reaching the lower surface of the receiving plate 9 falls to the lower tank 7 in the cleaning on the lower tank 7 side, but a part of the receiving plate 9 It remains on the lower tank 7 side, and a part flows along the guide part 43 provided in a convex shape on a part on the lower tank 7 side, and is guided to the upper and lower flow paths 23 to join. And also at the time of the washing | cleaning of the lower tank 7 side, the wash water of the lower washing nozzle 13 which reached to the receiving plate 9 is efficiently collect | recovered to the drain 25 by the guide part 43 provided in the lower tank 7 side of the receiving plate 9. As a result, the water level of the drain port 25 during the cleaning operation becomes high. Therefore, the margin of air leakage to the cleaning pump 21 is increased, and the amount of water used corresponding to the increased water level can be reduced, thereby obtaining a water saving effect.

  Further, in the configuration in which the drain port 25 is provided in the lower tank 7 positioned substantially below the up-and-down flow path 23, as shown in FIG. A convex rib portion 44 may be provided, and an opening 45 may be provided on the upstream side of the rib portion 44 (in the back of the cleaning tank 3 in the present embodiment) to allow the upper tank 6 and the lower tank 7 to communicate with each other. In this case, it is preferable that the opening 45 is positioned substantially above the drain port 25. When the circulating cleaning water in the upper tank 6 flows on the receiving plate 9 and reaches the inlet of the upper and lower flow path 23, the cleaning water flows biased toward the door portion 5 due to inertial force. By this flow, the cleaning water is supplied to the drain ports 25 non-uniformly. Therefore, the inertia force of the cleaning water is once weakened by the rib portion 44 by the above-described configuration, and the cleaning water is flowed from the opening 45 provided on the upstream side of the flow to the upper and lower flow paths 23, so that the opening 45 Washing water can be uniformly and uniformly supplied to the drain port 25 provided substantially below. Therefore, since the circulating cleaning water is sent to the drain port 25 at the shortest distance, the useless amount of water flowing through the path is saved and a water saving effect is obtained. Further, since the washing water flows almost directly below the opening 45, the position of the lattice closing portion 55 of the drainage filter 26 can be configured with a minimum area, and the pressure loss due to the drainage filter 26 can be minimized. .

  The present invention relates to a washing, rinsing and drying method of a dishwasher, and does not limit the shape and size of the main body of the dishwasher, the arrangement of objects to be cleaned such as dishes, the arrangement of individual parts, and the like.

  As described above, the dishwasher according to the present invention provides an upper and lower flow path and a middle basket between the receiving plate and the door provided between the upper and lower tanks, so that the object to be cleaned set in the middle basket is placed on the upper side. Washing water and warm air that pass through the lower flow path can be used intensively, and washing and drying performance can be enhanced, and water saving, energy saving, and time saving can be realized, which is useful as a dishwasher or the like.

2 Main body 3 Washing tank 5 Door 6 Upper tank 7 Lower tank 9 Receiving plate 10 Upper basket 11 Lower basket 12 Upper washing nozzle 13 Lower washing nozzle 21 Washing pump 23 Vertical flow path 24 Middle basket 25 Drain outlet 26 Drain filter 27 Residue Filter 28 Heating unit 29 Upper cleaning flow path 30 Lower cleaning flow path 34 Upper cleaning nozzle injection port (first injection port)
35 Lower cleaning nozzle injection port 36 Drying part 41 Second upper and lower flow path 42 Receptacle inclined part (inclined part)
43 Guide portion 44 Rib portion 45 Opening portion 46 Second upper cleaning nozzle injection port (second injection port)
47 Detergent container 48 Middle stage residue filter 49 Water diversion part 55 Lattice closing part

Claims (11)

A cleaning tank that accommodates an object to be cleaned, a door that is movable in a substantially horizontal direction and opens and closes the cleaning tank, a receiving plate that divides the cleaning tank into an upper tank and a lower tank, and an upper basket in the upper tank An upper cleaning nozzle for cleaning an object to be cleaned, a lower cleaning nozzle for cleaning an object to be cleaned provided in a lower basket in the lower tank, and a cleaning for supplying cleaning water to the upper and lower cleaning nozzles A pump, an upper and lower flow path provided between the receiving plate and the door and communicating the upper tank and the lower tank; a middle basket installed in the upper and lower flow path; a side surface of the receiving plate and the washing tank A dishwasher with a second upper and lower flow path between them . The dishwasher according to claim 1, wherein the lower basket is provided so that a part of a projected area is positioned substantially below the upper and lower flow paths. The dishwasher according to any one of claims 1 and 2, wherein the middle basket is provided in a front portion of the upper basket. The dishwasher according to claim 1, wherein the middle basket is provided on the door portion. The dishwasher of any one of Claims 1-4 which provided the heating part in the said lower tank of the directly lower direction of the said up-down flow path. Receiving plate has an inclined portion provided in the lower tank, wherein the inclined portion, according to any one of claims 1 to 5 as the configuration that is inclined forwardly downwardly to the middle cage direction of the upper downstream path Dishwasher. Receiving plate has a convex guide portion provided in a part of the lower tank, either the guide portion of the claim 1-6 in which a configuration that is inclined forwardly downwardly to the middle cage direction of the upper downstream path A dishwasher according to claim 1. The receiving plate is provided with a rib portion that protrudes substantially upward near the end near the door portion, has an opening on the upstream side of the rib, and the middle basket is provided substantially below the opening. The dishwasher according to any one of claims 1 to 7 . The upper cleaning nozzle includes a plurality of nozzle cleaning channels that feed the pressurized cleaning water supplied from the cleaning pump, and a plurality of nozzles that are provided above the nozzle cleaning channel and spray toward the upper basket. a first injection port, in any one of claims 1 to 8 having at least one or more made of a second injection port for injecting toward the middle car provided under the nozzle cleaning flow path The dishwasher described. The dishwasher according to any one of claims 1 to 9 , wherein the upper and lower flow paths have a detergent case in which a detergent is introduced, and the detergent case is positioned substantially above the middle basket. Drying unit provided in the cleaning tank is provided substantially front portion of the lower tank, according to any one of claims 1 to 10 having a blower for blowing air substantially toward the rear of the lower tank dishwasher.