JP2012147865A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drawer type dishwasher, which includes a washing tub divided into upper and lower structures, and is convenient and capable of preventing a washing object from falling to a body.SOLUTION: A washing tub 2 is divided into a lower washing part 4 provided so as to be freely drawn back and forth and an upper washing part 5 fixed to a dishwasher body 1. The lower washing part 4 includes a lower dish basket 8, a washing pump 18, a lower washing nozzle 9, and a door body 3 provided in front of the lower washing part 4. The upper washing part 5 includes an upper dish basket 11, an upper washing nozzle 12, and a receiving plate 13 provided below the upper washing nozzle 12. The lower washing part 4 includes a fall prevention part 40 having an upper end below the receiving plate 13 at a rear edge part. Accordingly, the dishwasher can prevent a washing object 7 from falling behind the lower washing part 4 during the accommodation of the washing object 7, and is convenient.

Description

  The present invention relates to a dishwasher for cleaning and rinsing an object to be cleaned such as dishware.

  2. Description of the Related Art Conventionally, in a drawer type dishwasher 101 in which a washing tank slides back and forth, a dishwasher 101 having a plurality of washing units at the top and bottom includes a lower washing unit 102 that slides horizontally as shown in FIG. The upper cleaning unit 103 is provided above and fixed to the main body. The lower cleaning unit 102 includes a lower cleaning tank 104 that slides horizontally, a lower tableware basket 105 that stores an object to be cleaned, and a lower cleaning nozzle 106 provided below the lower tableware basket 105. A door body 107 is provided in front of the lower cleaning unit 102. The door body 107 slides horizontally in conjunction with the lower cleaning unit 102. The upper cleaning unit 103 includes an upper table basket 108 for storing an object to be cleaned, an upper cleaning nozzle 109 provided below the upper table basket 108, and a receiving plate provided below the upper cleaning nozzle 109 and covering the entire upper cleaning unit 103. 110 (see, for example, Patent Document 1).

  In this configuration, when the door body 107 is pulled out, the lower cleaning unit 102 is also pulled out, so that the object to be cleaned can be taken out with a small amount of operation, which is easy to use.

Special table 2003-500145 gazette

  However, in the dishwasher of Patent Document 1, the user sets the dishes by pulling the lower washing unit 102 forward, and when the user accidentally drops chopsticks or the like behind the lower washing unit 102, It easily falls to the bottom of the main unit. Even if the lower cleaning unit 102 is slid rearward with the tableware falling on the lower surface of the main body, the dropped tableware is obstructed and the lower cleaning unit 102 cannot be stored in the main body. Moreover, in order to remove the tableware which fell, there existed the subject that it was inconvenient, such as having to bend the body.

  The present invention solves the above-mentioned conventional problems, and by providing a fall prevention part configured so that the upper end is below the receiving plate at the rear end part of the lower cleaning part, the tableware can be dropped onto the main body. The purpose is to provide an easy-to-use dishwasher that is prevented.

  The cleaning tank is divided into a lower cleaning part that can be pulled back and forth and an upper cleaning part that is provided above the lower cleaning part and is fixed to the main body, and the lower cleaning part stores an object to be cleaned. A lower washing basket that pumps washing water in the washing tank, a lower washing nozzle that is provided below the lower dish basket and communicates with the washing pump, and a door provided in front of the lower washing portion The upper cleaning section includes an upper tableware for storing an object to be cleaned, an upper cleaning nozzle provided below the upper tableware basket and communicating with the cleaning pump, and provided below the upper cleaning nozzle. A receiving plate that covers the entire lower surface of the upper cleaning unit, and the lower cleaning unit includes a fall prevention unit configured such that the upper end is below the receiving plate at the rear end.

  Providing an easy-to-use dishwasher that prevents the tableware from falling to the bottom of the main body by providing a fall prevention part configured such that the upper end is below the backing plate at the rear end of the lower washing part it can.

  In the dishwasher according to the present invention, the lower washing part is provided with a fall prevention part configured such that the upper end is below the receiving plate at the rear end part, thereby preventing the dishes from falling to the bottom surface of the main body. Could provide a good dishwasher.

Side sectional view of the dishwasher according to Embodiment 1 of the present invention. Side cross-sectional view when pulling out the lower washing tank of the dishwasher Front sectional view of the dishwasher A perspective view of the lower washing part of the dishwasher as seen from diagonally forward Side view of the lower washing section of the dishwasher Perspective view of the lower washing part of the dishwasher as seen from the rear Side sectional view of another example of fall prevention part of the dishwasher Side sectional view of another example of the dishwasher Side sectional view of the water diversion part of the dishwasher Top view of the water diversion part of the dishwasher Perspective view of a conventional dishwasher

  According to a first aspect of the present invention, the cleaning tank is configured to be divided into a lower cleaning portion that is provided so as to be freely drawn back and forth, and an upper cleaning portion that is provided above the lower cleaning portion and is fixed to the main body. A lower dish basket for storing an object to be cleaned, a washing pump for pumping washing water in the washing tank, a lower washing nozzle provided below the lower dish basket and communicating with the washing pump, and the lower washing unit A door provided at the front, and the upper cleaning section includes an upper table for storing an object to be cleaned, an upper cleaning nozzle provided below the upper table basket and communicating with the cleaning pump, and the upper cleaning A receiving plate that is provided below the nozzle and covers the entire lower surface of the upper cleaning unit, and the lower cleaning unit includes a fall prevention unit that is configured such that the upper end is below the receiving plate at the rear end. It is. With this configuration, it is possible to provide an easy-to-use dishwasher that prevents the dishes (objects to be cleaned) from falling on the bottom surface of the main body.

  According to a second invention, in the first invention, the fall prevention part is formed in a plate shape whose upper part is inclined rearward, so that when the lower cleaning part is pulled out, the gap with the receiving plate is further reduced. Further, it is possible to prevent the tableware from falling to the bottom of the main body. In addition, the amount of water flowing to the back surface of the fall prevention unit is reduced and the cleaning water falls at a shorter distance, so that the predetermined cleaning performance can be maintained even with a smaller amount of cleaning water.

  According to a third invention, in the first or second invention, the lower cleaning section collects, in the lower cleaning tank, the lower cleaning tank that opens upward, and the cleaning water dropped from the fall prevention section at the rear end. By providing the recovery unit, the cleaning water that has flowed into the back side of the fall prevention unit during the operation of the dishwasher can be recovered in the lower cleaning tank without falling on the main body.

  According to a fourth invention, in the third invention, since the recovery section is inclined in a downward direction toward the front, the recovered cleaning water can be quickly recovered in the lower cleaning tank. A predetermined cleaning performance can be obtained.

  According to a fifth aspect of the present invention, in the third or fourth aspect, the fall prevention unit is dropped at the recovery unit by providing a communication port for supplying the cleaning water of the recovery unit to the lower cleaning tank at a lower portion. Since the washing water can be quickly collected in the lower washing tank, a predetermined washing performance can be obtained with less washing water.

  According to a sixth aspect of the present invention, in the first to fifth aspects of the present invention, the fall prevention unit is provided with a rib on the back surface, thereby improving the strength of the fall prevention unit, so that washing water is supplied to the fall prevention unit during operation. It is possible to provide a dishwasher with reduced noise generated by collision.

  The seventh invention is the invention of the first to sixth inventions, wherein a wiper in contact with the receiving plate is provided at the upper end of the fall prevention part, so that when the dishwasher is temporarily stopped and the lower washing part is pulled out, By wiping off the washing water adhering to the bottom surface of the receiving plate with a wiper, it is possible to provide a dishwasher that can prevent the washing water from falling to the bottom of the dishwasher main body and prevent rust and odor generation on the bottom of the main body.

  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)
As shown in FIGS. 1-3, the washing tank 2 is accommodated in the dishwasher main body 1 (main body). A door body 3 is provided on the entire front surface of the cleaning tank 2. Further, the dishwasher main body 1 has a lower washing unit 4 provided at the lower part of the washing tub 2 and an upper washing unit 5 provided at the upper part of the washing tub 2 and fixed to the dishwasher main body 1.

  The lower cleaning section 4 is slidable in the front-rear direction, and has a lower cleaning tank 6 having an opening on the upper side, a lower dish basket 8 for storing the object 7 to be cleaned, and a bottom for cleaning the object 7 to be cleaned. A cleaning nozzle 9 is provided. On the back surface of the lower cleaning tank 6, a plate-shaped drop prevention unit 40, a recovery unit 41 provided on the back of the fall prevention unit 40, and a rib 42 that supports the fall prevention unit 40 are provided. These will be described in detail later with reference to FIGS.

  The upper washing section 5 is provided with an upper washing tank 10 that is substantially fixed to the dishwasher body 1, an upper dish basket 11 that houses the article 7 to be washed, and an upper washing nozzle 12 for washing the article 7 to be washed. It has been. Further, below the upper cleaning nozzle 12, a receiving plate 13 that covers the entire lower surface of the upper cleaning portion 5 and is inclined in a downward direction toward the front is provided.

  The lower washing tank 6 is moved back and forth by a slide rail 16 composed of both fixed rails 14 attached to the left and right inner surfaces of the dishwasher main body 1 and both movable rails 15 slidably mounted on the both fixed rails 14 respectively. It can move in the direction and can be pulled out from the front opening of the dishwasher body 1. The door body 3 is fixed to the front surface of the lower cleaning tank 6 and moves in the front-rear direction in conjunction with the lower cleaning section 4.

  The lower cleaning nozzle 9 as a cleaning means is rotatably provided at a substantially central portion of the bottom surface of the lower cleaning tank 6 and is rotated by a reaction force of the cleaning water jet. The lower cleaning nozzle 9 is provided with an injection hole 9a for injecting cleaning water on the upper surface. The lower table basket 8 is provided above the lower cleaning nozzle 9 and accommodates the article 7 to be cleaned. The lower tableware basket 8 is configured to store large tableware and cooking utensils such as platters, cutting boards, and pans. Further, a concave drainage port 17 is provided at the lowermost part of the front side corner of the inner bottom surface of the lower cleaning tank 6.

  A cleaning pump 18 disposed substantially rearward of the lower cleaning tank 6 pressurizes cleaning water. The circulation path 19 is a path for supplying cleaning water from the drain port 17 to the cleaning pump 18. The water diversion unit 20 divides the washing water sent from the washing pump 18 into two paths and feeds the washing water to the upper washing nozzle 12 and the lower washing nozzle 9. The water diversion unit 20 is connected to a first water conduit 21 for supplying water to the lower cleaning nozzle 9 and a second water conduit 22 for supplying water to the upper cleaning nozzle 12.

  The filter 23 is provided above or inside the drain port 17, and the residue (the object 7 to be cleaned (tableware) is washed in the cleaning process for cleaning the object 7 (tableware) and the process for rinsing the object 7 (tableware). )) Is collected. Inside the lower cleaning tank 6 is provided a heating means 25 (for example, a sheathed heater) for heating the cleaning water.

  The upper washing tank 10 is formed so as to cover the lower washing tank 6 from above when the lower washing tank 6 is accommodated in the dishwasher main body 1, and the front is opened. The upper washing tank 10 is substantially fixed to the dishwasher body 1 by a plurality of fixing portions 26 provided on the side surfaces. A gasket 27 having a substantially U-shape in plan view is provided on the left and right side surfaces of the upper cleaning tank 10 and the lower end of the back surface. When the lower cleaning tank 6 is stored in the dishwasher body 1, the lower cleaning is performed. The upper end of the tank 6 and the lower end of the upper cleaning tank 10 are sealed with water.

  The upper table basket 11 is provided in the upper washing tank 10 and stores the article 7 to be cleaned. The upper table basket 11 is composed of both fixed rollers 28 attached to the left and right inner surfaces of the upper washing tub 10 and the upper table basket movable rails 29 slidably mounted on the fixed rollers 28 respectively. The dishwasher rail 30 can be moved in the front-rear direction, and can be pulled out from the front opening 10 a of the upper washing tank 10 to the front of the dishwasher body 1. The upper tableware basket 11 is configured to store small tableware such as tea bowls and middle dishes having a diameter of 20 cm or less.

  The upper washing nozzle 12 is rotatably provided below the central portion of the upper table basket 11 and is rotated by the reaction force of the washing water jet. Similarly to the lower cleaning nozzle 9, the upper cleaning nozzle 12 is provided with an injection hole 12 a for injecting cleaning water on the upper surface. The upper water conduit 31 provided in a substantially horizontal front-rear direction is for feeding cleaning water to the upper cleaning nozzle 12 and connects the second water conduit 22 and the upper cleaning nozzle 12. The upper water conduit 31 is fixed to the receiving plate 13 on the lower surface of the receiving plate 13.

  The upper water conduit 31 is bent upward at a substantially central portion of the lower surface of the upper cleaning nozzle 12 and is connected to a shaft portion provided on the lower surface of the upper cleaning nozzle 12. The end portion of the upper water guide channel 31 on the shaft portion side is configured to have a diameter larger than that of the shaft portion, and the upper cleaning nozzle 12 is rotatable around the shaft portion. Further, the upper water conduit 31 is fitted and communicated with the second water conduit 22 when the lower washing tub 6 is stored in the dishwasher body 1 and is released when the lower washing tub 6 is pulled out to be released from communication. It is configured.

  A receiving plate opening 13 a is provided in front of the receiving plate 13. The receiving plate 13 is configured so that the receiving plate 13 and the door body 3 do not come into contact with each other when the lower washing unit 4 is stored in the dishwasher body 1.

  At the upper part of the inner wall of the door body 3, a key-shaped upper tableware basket interlocking portion 32 is provided, a part of the upper tableware basket 11 is engaged, and the lower washing tub 6 and the upper tableware basket 11 slide together. It is configured as possible. The upper tableware basket interlocking portion 32 is formed integrally with the inner wall of the lower cleaning tank 6. Moreover, the switching means 32a is provided in the upper table basket interlocking | linkage part 32 vicinity, and the interlocking | linkage with the upper tableware basket 11 and the lower washing tank 6 and the door body 3 can be switched. The switching means 32a is, for example, a retractable type. When the switching means 32a is erected as shown in FIG. 2, the upper table basket 11 is interlocked with the operation of the lower washing tub 6, and the switching means 32a. The upper table basket 11 is not interlocked with the operation of the lower washing tub 6.

The washing water in the washing tub 2 is supplied from the water supply valve 33 to the upper washing tub 10 and is drained out of the dishwasher main body 1 through the drainage path 34 a by the drainage means 34 provided in the lower washing section 4. A part of the drainage path 34 a is housed in a pantograph (not shown) provided on the back of the dishwasher body 1, and an end is provided outside the dishwasher body 1. The blowing means 35 provided on the back surface of the lower washing tank 6 operates in the drying process of the dishwasher, sucks outside air, is supplied into the washing tank 2 through the blowing path 36, and the top or side wall of the washing tank 2 The object to be cleaned 7 (tableware) in the cleaning tank 2 is dried by exhausting from the exhaust port 37 provided in the cleaning tank 2.

  The temperature detection means 38 detects the temperature of the cleaning water, air, and heating means 25 in the cleaning tank 2. The control means 39 controls the water supply valve 33 to supply cleaning water into the cleaning tank 2 and controls the heating means 25 based on the output of the temperature detection means 38, as well as the cleaning pump 18 and the water supply valve. 33, the drainage means 34, the blower means 35, and the like are controlled to sequentially control a series of steps of washing, rinsing and drying.

  As shown in FIG. 1, this dishwasher is basically installed in a kitchen cabinet A. Describing the operation and action in the above configuration, when the user pulls out the door body 3 from the dishwasher main body 1, the lower washing tank 6 is pulled out in conjunction. Furthermore, the upper tableware basket 11 engaged with the upper tableware basket interlocking part 32 attached to the inner wall surface of the lower washing tank 6 is also drawn out simultaneously. The user first places a small object 7 (tableware) in the upper table basket 11. Subsequently, the upper dish basket 11 is slid backward in order to store the remaining article 7 (tableware) such as the large dish 7 (tableware) in the lower tableware basket 8. Specifically, the upper table basket 11 is removed from the upper tableware basket interlocking section 32 by releasing the engagement with the upper tableware basket interlocking section 32 by lifting the front part of the upper tableware basket 11 upward and shifting it backward. The upper tableware basket 11 removed from the upper tableware basket interlocking portion 32 is slid rearward and stored in the upper washing tank 10.

  At this time, the residue (liquid or solid matter) adhering to the object 7 (tableware) stored in the upper tableware basket 11 partially drops downward from the lower edge of the object 7 to be cleaned. The dropped residue is dropped on the receiving plate 13 or the upper cleaning nozzle 12 and collected. In addition, when there is no receiving plate 13, since the residue falls on the bottom face of the dishwasher main body 1, it causes odor and corrosion of the dishwasher main body 1. The residue dropped on the receiving plate 13 and the upper cleaning nozzle 12 falls into the lower cleaning tank 6 from the receiving plate opening 13a in front of the receiving plate 13 by the flow of cleaning water after the start of operation, and is collected in the filter 23. Is done.

  The user puts the detergent into the lower washing tub 6, and then slides the lower washing tub 6 backward and stores it in the dishwasher main body 1. At this time, the front portion of the upper tableware basket 11 is again engaged with the upper tableware basket interlocking portion 32, and when the door body 3 is pulled out again, the upper tableware basket 11 is pulled out in conjunction.

  When the user starts operation, first, the drainage means 34 operates, and the washing water (referred to as residual water) remaining in the lower washing tank 6 in the previous operation or the like is discharged out of the dishwasher body 1. Next, the water supply valve 33 is operated to supply a predetermined amount of cleaning water to the cleaning tank 2. When a predetermined amount of cleaning water is supplied, the cleaning water supplied from the drain port 17 to the cleaning pump 18 provided in the circulation path 19 together with the detergent is pressurized by the cleaning pump 18, The water is divided into a first conduit 21 and a second conduit 22. The washing water sent to the first water conduit 21 is sent to the lower washing nozzle 9. The washing water sent to the second conduit 22 is sent to the upper cleaning nozzle 12 via the upper conduit 31. The cleaning water sent to the respective cleaning nozzles is sprayed from the injection holes 12 a and 9 a provided in the upper cleaning nozzle 12 and the lower cleaning nozzle 9.

  The cleaning water sprayed from the upper cleaning nozzle 12 and cleaning the article 7 to be cleaned falls from the receiving plate opening 13a to the lower cleaning section 4 and is collected in the drain 17 together with the cleaning water sprayed from the lower cleaning nozzle 9. Then, the water is sent again to the cleaning pump 18 through the circulation path 19. Thus, the cleaning process is performed. In this cleaning process, the heating means 25 provided in the lower cleaning tank 6 is energized to heat the cleaning water to a predetermined cleaning temperature.

When the washing process is performed for a predetermined time, the drainage means 34 discharges the washing water containing dirt washed away from the article 7 (tableware) to the outside of the dishwasher body 1. Then, the water supply valve 33 newly supplies cleaning water, and the cleaning water is again sprayed from the injection holes 12 a and 9 a provided in the upper cleaning nozzle 12 and the lower cleaning nozzle 9, and is cleaned with detergent or residue. Rinse the object 7 (tableware) and execute the rinsing process.

  When this rinsing process is completed, the washing water is again discharged out of the dishwasher body 1. This rinsing process is repeated several times in succession. And the washing | cleaning water is heated to predetermined temperature (for example, 60 degreeC) with the heating means 25, and the to-be-washed | cleaned material 7 (tableware) is heated and rinsed at the end of the rinse process performed several times. In the cleaning and rinsing process, the residue is collected in a filter 23 provided in the lower cleaning tank 6.

  When the heating rinsing process is completed, the drying process starts. In this step, the air blowing means 35 is operated and the outside air is sent into the lower cleaning tank 6 from the air blowing port (not shown) via the air blowing path 36. After the air sent into the lower washing tank 6 from the blower port is heated by the heating means 25 provided in the vicinity (downstream direction) of the blower port, the object 7 (tableware) to be cleaned is dried and discharged from the exhaust port 37. It is exhausted outside the dishwasher body 1. After the drying process is completed, the operation is terminated.

  In the present embodiment configured as described above, the configuration in the vicinity of the back surface of the lower cleaning tank 6 will be described in detail below. As shown in FIGS. 4 to 6, a plate-shaped drop prevention unit 40 and a recovery provided at the back of the fall prevention unit 40 are provided at the rear end of the lower washing unit 4, specifically, the back surface of the lower washing tank 6. A portion 41 and a plurality of ribs 42 that support the fall prevention portion 40 are provided. The fall prevention part 40 is formed integrally with the lower washing tank 6 on the back surface of the lower washing tank 6, and the upper end of the fall prevention part 40 is configured to be below the lowermost surface of the receiving plate 13 (FIG. 2). reference).

  The collection unit 41 is formed integrally with the lower cleaning tank 6 so as to extend rearward from the rear wall at the upper end of the rear surface of the lower cleaning tank 6, and is provided behind the lower end of the fall prevention unit 40. Further, the recovery unit 41 is inclined forward, that is, in a downward direction toward the lower cleaning tank 6, and the drop prevention unit 40 is provided with a plurality of communication ports 43 that allow the recovery unit 41 and the lower cleaning tank 6 to communicate with each other. The washing water dripping from the flow and flowing into the back side of the fall prevention unit 40 is quickly collected in the lower washing tank 6 without dropping to the bottom of the dishwasher body 1. In addition, a semicircular notch is provided at the center of the upper end of the fall prevention unit 40 in order to avoid contact with the second water conduit 22.

  With reference to FIGS. 4-6, the operation | movement and effect | action are explained in full detail below about the structure of the said back washing tank 6 back surface part vicinity. As described above, when the user pulls out the door body 3 from the dishwasher main body 1, the lower washing tank 6 is pulled out in conjunction. Furthermore, the upper tableware basket 11 engaged with the upper tableware basket interlocking part 32 attached to the inner wall surface of the lower washing tank 6 is also drawn out simultaneously. The user first places the object 7 (tableware) in the upper table basket 11. Subsequently, the upper dish basket 11 is slid rearward in order to store the remaining object 7 (tableware) in the lower dish basket 8. At this time, tableware and small items (chopsticks, spoons, etc.) may fall accidentally from the hand, but in the present embodiment, the drop prevention unit 40 causes the dishwasher body 1, the upper washing tank 10, and the lower washing tank 6 to Since the gap | interval of this is obstruct | occluded, it can prevent falling in the dishwasher main body 1. FIG.

  After storing the tableware, the user stores the lower washing tank 6 in the dishwasher body 1. At this time, the fall prevention unit 40 is positioned in parallel with the back surface of the upper cleaning tank 10, but if a predetermined gap (for example, 5 mm) is not provided between the fall prevention unit 40 and the upper cleaning tank 10 wall surface, foreign matter or the like is a gap. This can cause odors and poor cleaning. By providing the predetermined gap, the washing water flows into the back of the fall prevention unit 40 during the operation of the dishwasher. However, the washing water is collected by the collection unit 41, and the plurality of communication ports 43 provide the inside of the lower washing tank 6. Water is sent to.

Here, the recovery unit 41 is inclined forward, that is, in a downward direction toward the lower cleaning tank 6, and the fall prevention unit 40 is provided with a plurality of communication ports 43 that allow the recovery unit 41 and the lower cleaning tank 6 to communicate with each other. The washing water dropped from the prevention unit 40 and flowing into the back side of the fall prevention unit 40 can be quickly collected in the lower washing tank 6 without being dropped on the dishwasher body 1. In addition, the plane part ahead and the side from the fall prevention part 40 between the collection | recovery part 41 and the lower washing tank 6 is also formed continuously with the collection | recovery part 41, and it inclines in the direction which goes down toward the lower washing tank 6. And even more effective.

  Further, while the dishwasher is in operation, the washing water sprayed vigorously from the lower washing nozzle 9 also collides with the fall prevention unit 40, but the fall prevention unit 40 is provided with the rib 42 on the back surface of the fall prevention unit 40. By improving the strength, the noise generated when the washing water collides with the fall prevention unit 40 during operation can be reduced. The rib 42 can obtain the above effect even if it is provided on the front side of the fall prevention unit 40, that is, on the inner side when viewed from the lower cleaning tank 6, but the back side of the fall prevention unit 40 from the viewpoint of cleanliness and ease of cleaning. It is preferable to provide in.

  In the present embodiment, the fall prevention unit 40 is configured vertically, but it is more desirable that the upper portion is inclined rearward as shown in FIG. When the upper part of the fall prevention part 40 is inclined rearward, when the lower washing tank 6 is pulled forward, the gap with the receiving plate 13 is further reduced, and the object 7 to be washed is dropped to the bottom of the dishwasher body 1. Can be prevented more. Moreover, since the upper end of the fall prevention part 40 and the upper washing tank 10 are in contact with each other and the amount of water flowing to the back of the fall prevention part 40 is reduced and the washing water falls at a shorter distance, the predetermined washing performance can be achieved even with a smaller quantity of washing water. Can be maintained. Here, the fall prevention unit 40 is formed in a plate shape for ease of integral molding with the lower cleaning tank 6, but it is not necessarily formed in a plate shape, and may not be formed integrally with the lower cleaning tank 6. Good.

  Further, as shown in FIG. 8, a soft rubber wiper 44 may be provided at the upper end of the fall prevention unit 40, for example. In this case, when the operation of the dishwasher is temporarily stopped and the lower washing tank 6 is pulled out, the wiper 44 slides in contact with the bottom surface of the receiving plate 13, and water droplets attached to the bottom surface of the receiving plate 13 are removed by the wiper 44. It is possible to prevent the washing water that causes rust and odor from falling to the bottom of the dishwasher body 1.

  Further, as shown in FIGS. 9 and 10, the water distribution unit 20 has a configuration for changing the amount of water flowing from the cleaning pump 18 to the lower cleaning nozzle 9 and the upper cleaning nozzle 12. It is desirable. Specifically, a separator 50 for changing the ratio of the amount of washing water flowing through the first water conduit 21 and the second water conduit 22 is disposed inside the water diversion section 20. The separator 50 is a disk-shaped resin molded part provided adjacent to the vicinity of the water outlet 50a and has a plurality of apertures 50b. The separator 50 has a substantially central portion connected to the water diversion motor 51 and is rotatable. Depending on the stop position of the separator 50, the ratio of the amount of cleaning water flowing through the first water conduit 21 and the second water conduit 22 changes, and the cleaning water can be sent to only one of them. The position of the separator 50 can be determined by a position sensor (not shown).

  When this configuration is provided, the user can specify a driving course by pressing a course setting button provided on the operation unit. Here, courses such as an upper tableware washing course for washing only the upper tableware basket 11, a lower tableware basket washing course for only the lower tableware basket 8, and an upper and lower basket washing course for washing both the upper and lower sides are provided.

When the operation course is designated and the dishwasher is started, the drainage means 34 operates for a predetermined time, and then the water supply valve 33 operates to supply a predetermined amount of cleaning water to the lower cleaning tank 6. When a predetermined amount of washing water is supplied, the water diversion motor 51 provided in the water diversion unit 20 operates based on the set course, and the separator 50 rotates. When the upper table basket washing course is designated, the opening 50b of the separator 50 and the outlet 50a to the second conduit 22 coincide with each other, and the separator 50 stops at the position where the first conduit 21 is blocked. To do. Similarly, in the case of a lower table basket cleaning course, the separator 50 stops at a position where cleaning water is supplied only to the first water conduit 21. In the case of the upper and lower car cleaning course, the separator 50 is rotated so that the cleaning water can be supplied to the first water conduit 21 and the second water conduit 22 and then stopped at that position.

  Thereby, since cleaning water can be supplied and cleaned only in the minimum necessary location according to the amount of the object 7 (tableware) to be cleaned, reduction of running costs such as power consumption and water consumption can be realized.

  The dishwasher of the present invention is useful as a household dishwasher built in a kitchen cabinet because it can improve usability by preventing the dishes from falling behind the lower washing section when storing dishes. It is.

1 Dishwasher body (main body)
2 Cleaning tank 3 Door body 4 Lower cleaning section 5 Upper cleaning section 6 Lower cleaning tank
8 Lower tableware basket 9 Lower washing nozzle 10 Upper washing tank 11 Upper tableware basket 12 Upper washing nozzle 13 Receptacle 18 Washing pump 32 Upper tableware basket interlocking part 40 Fall prevention part 41 Collection part 42 Rib 43 Communication port 44 Wiper

Claims (7)

The cleaning tank is divided into a lower cleaning part that can be pulled back and forth and an upper cleaning part that is provided above the lower cleaning part and is fixed to the main body, and the lower cleaning part stores an object to be cleaned. A lower washing basket that pumps washing water in the washing tank, a lower washing nozzle that is provided below the lower dish basket and communicates with the washing pump, and a door provided in front of the lower washing portion The upper cleaning section includes an upper tableware for storing an object to be cleaned, an upper cleaning nozzle provided below the upper tableware basket and communicating with the cleaning pump, and provided below the upper cleaning nozzle. A dishwasher comprising: a receiving plate that covers the entire lower surface of the upper cleaning unit; and the lower cleaning unit includes a fall prevention unit configured such that an upper end is located below the receiving plate at a rear end. The dishwasher according to claim 1, wherein the fall prevention part is formed in a plate shape whose upper part is inclined rearward. The said lower washing | cleaning part was equipped with the lower washing tank opened upwards, and the collection | recovery part which collect | recovers the washing water dripped from the said fall prevention part in the said rear washing tank in the rear-end part. dishwasher. The dishwasher according to claim 3, wherein the collection unit is inclined in a downward direction toward the front. 5. The dishwasher according to claim 3, wherein the fall prevention unit is provided with a communication port at a lower portion for supplying the cleaning water of the recovery unit to the lower cleaning tank. The dishwasher according to any one of claims 1 to 5, wherein the fall prevention unit includes a rib on the back surface. The dishwasher of any one of Claims 1-6 which provided the wiper which contact | connects the said receiving plate in the said fall prevention part upper end.