JP2008104480A - dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher with excellent washing efficiency and energy saving properties, capable of washing large-sized dishes. <P>SOLUTION: The dishwasher includes the upper-stage dishes basket 18 disposed inside a washing tub 2 for storing a dishes 19, and a washing pump 46 for pressure-feeding washing water to an upper-stage washing nozzle 22 for spraying washing water. The upper-stage washing nozzle 22 is mounted in such a way as movable between a position under the upper-stage dishes basket 18 and a position near one inner side surface of the washing tub 2. Washing water is not fed to the upper-stage washing nozzle 22 while the upper-stage washing nozzle 22 is moved to the position near the inner side surface of the washing tub 2. The dishwasher is convenient because the large-sized tableware 19 can be stored and washed without interference of the nozzle by moving and retreating the upper-stage washing nozzle 22. Further, unnecessary spraying of washing water can be prevented because washing water is not fed while the upper-stage washing nozzle 22 is moved to the position near the inner side surface of the washing tub 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dishwasher for cleaning dishes by spraying washing water from the washing nozzle toward the dishes.

  Conventionally, this type of dishwasher has been configured as shown in FIGS. Hereinafter, the configuration will be described.

  As shown in FIGS. 10 and 11, the dishwasher 1 is provided with a washing tub 2 inside, a drain hole 3 is provided at the bottom of the washing tub 2, and communicates with the other side of the drain hole 3. The cleaning pump 5 driven by the motor 4 is disposed in the pump chamber 5a, and the cleaning pump 5 is configured to circulate cleaning water inside the cleaning tank 2. In this circulation, washing water is sucked in from the drain hole 3 by the washing pump 5 and is supplied from the washing pump 5 to the washing nozzle 6 disposed in the inner bottom portion of the washing tank 2, from the washing nozzle 6 toward the dishes 7. After the tableware 7 is washed, the process returns to the drain hole 3 again.

  A cleaning water heater 8 is disposed between the cleaning nozzle 6 and the bottom of the cleaning tank 2. In addition, the tableware basket is configured so that the tableware 7 is arranged in an orderly manner above the cleaning nozzle 6 so that cleaning water can be effectively sprayed onto the tableware 7 and the tableware 7 can be cleaned efficiently. 9 is installed.

  The washing tank 2 is opened forward, and a lid 10 that can be opened and closed forward is attached to the front surface thereof. The drainage pump 11 is configured to suck the cleaning water from the drainage hole 3 and discharge the cleaning water to the outside through the drainage hose 12 (see, for example, Patent Document 1).

Further, in the case where the table baskets 9 capable of accommodating a large number of tableware 7 in the washing tank 2 are provided in two upper and lower stages, in order to improve the cleanability of the tableware stored in the upper table basket 13, FIG. As shown in FIG. 11 and FIG. 11, there has also been proposed a configuration in which a fixed nozzle 14 is provided on the wall surface, and a cleaning liquid is jetted from the upper cleaning nozzle 16 through the water conduit 15 from the fixed nozzle 14.
JP 2001-218721 A

  However, the conventional dishwasher 1 configured as described above has a problem that the upper cleaning nozzle 16 becomes an obstacle when washing large dishes. In addition, if the fixed nozzle 14 is provided on the inner wall surface of the cleaning tank 2 or the cleaning nozzle 16 for the upper stage is provided in order to improve the cleanability of the tableware 7 a accommodated in the upper table basket 13, the dish is stored in the cleaning tank 2. There was also a problem that the amount of cleaning water tends to increase, leading to an increase in the size of the cleaning pump 5, an increase in power consumption, and an increase in cleaning time.

  The present invention solves the above-mentioned problems, and with a simple configuration, the cleaning nozzle can be moved and retracted to accommodate larger dishes, which is easy to use, has high cleaning efficiency, and saves energy. The purpose is to provide a dishwasher with excellent properties.

  In order to solve the above-described conventional problems, a dishwasher according to the present invention includes a washing tank, a plurality of upper and lower tableware provided in the washing tank, and washing water for washing the dishes. A plurality of cleaning nozzles for spraying, and a cleaning pump for pumping cleaning water to the plurality of cleaning nozzles, wherein at least one of the plurality of cleaning nozzles is other than the lowermost tableware basket among the plurality of tableware baskets In the state where the movable cleaning nozzle is moved to the vicinity of one inner side surface of the cleaning tank, the cleaning nozzle is disposed in the cleaning nozzle. The cleaning water is not supplied. By moving and retracting a movable cleaning nozzle, it is possible to store and clean large dishes without the cleaning nozzle getting in the way. It is easy to use, and when the movable cleaning nozzle is moved to the vicinity of one inner surface of the cleaning tank, the cleaning water is not supplied to the unnecessary portion because the cleaning water is not supplied from the cleaning pump. It is possible to provide a dishwasher with high cleaning efficiency and excellent energy saving.

  The dishwasher of the present invention can accommodate dishes as large as the washing nozzle, can improve usability, and prevents washing water from being sprayed on unnecessary parts, thereby improving washing efficiency and energy saving. Can be improved.

  The first invention includes a washing tank, a plurality of upper and lower tableware provided in the washing tank, and a plurality of washing nozzles for injecting washing water for washing the dishes, A washing pump that pumps washing water to the washing nozzle, and at least one of the plurality of washing nozzles is disposed below the table basket other than the lowermost one of the plurality of tableware baskets and one of the washing tanks. The movable cleaning nozzle is provided so as to be movable between the vicinity of the inner surface and the cleaning water is not supplied to the cleaning nozzle when the movable cleaning nozzle is moved to the vicinity of one inner surface of the cleaning tank. By moving and retracting the movable cleaning nozzle, it is possible to store and clean large dishes without disturbing the cleaning nozzle, making it easier to use and movable. Washing water from the washing pump is not supplied when the bottle is moved to the vicinity of the inner surface of the washing tank, so that washing water is not sprayed on unnecessary parts, and washing efficiency is high and energy-saving. Machine can be provided.

  In particular, the second invention is characterized in that a water conduit connected to the movable movable cleaning nozzle of the first invention, a water conduit that is provided on the inner surface of the cleaning tank and that sends cleaning water to the water conduit, and the water conduit And a connecting portion that connects the water conduit, and the connecting portion supports the water conduit in a tiltable manner, and has a valve mechanism that opens and closes in conjunction with the tilting operation of the water conduit inside. With a simple configuration, it is possible to prevent the cleaning water from being supplied from the cleaning pump in conjunction with the movement operation of the movable cleaning nozzle to the vicinity of one inner surface of the cleaning tank.

  In the third aspect of the invention, in particular, a fixed washing nozzle that communicates with the water conduit is provided on the inner surface of the washing tank of the second aspect of the invention, and the washing water can be jetted from the side to the dishes. The cleaning performance can be further improved. In addition, since the fixed cleaning nozzle is provided in communication with the water guide channel that guides the cleaning water to the movable cleaning nozzle, the cleaning water can be sprayed from multiple directions toward the dishes with a simple configuration.

  In the fourth invention, in particular, a lower cleaning nozzle is provided at the bottom of the cleaning tank of the third invention, and the cleaning water from the cleaning pump is selected as a movable cleaning nozzle, a fixed cleaning nozzle, and the lower cleaning nozzle. Compared to the case where cleaning water is supplied to all of the plurality of nozzles at the same time by selectively supplying the cleaning water to a plurality of nozzles. Thus, the amount of cleaning water stored in the cleaning tank can be reduced, and problems such as increase in power consumption and increase in size due to increase in the amount of water used and increase in temperature rise time can be solved.

  In the fifth aspect of the invention, the movable movable cleaning nozzle of any one of the first to fourth aspects of the invention is a rotary type cleaning nozzle, and when the upper tableware basket is used, it is accommodated in the upper tableware basket. It becomes possible to spread the washing water evenly over the prepared dishes, and the washing performance can be improved.

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

(Embodiment 1)
Hereinafter, the dishwasher in the 1st Embodiment of this invention is demonstrated with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same component as the conventional dishwasher demonstrated with reference to FIG. 10, FIG. 11, and the description is abbreviate | omitted.

  FIG. 1 is a side sectional view of the dishwasher according to the present embodiment, FIG. 2 is a side sectional view showing a state where the upper cleaning nozzle of the dishwasher is folded, and FIG. 3 is a lid of the front opening of the dishwasher. FIG. 4 is a perspective view showing the upper washing nozzle and its attachment part of the dishwasher.

  1-4, the dishwasher 1 in this Embodiment has provided in the washing tank 2 the lower tableware basket 17 and the upper tableware basket 18 up and down as a tableware basket. A first rotary cleaning nozzle 37 and a second rotary cleaning nozzle 38 for injecting cleaning water toward the tableware 7 housed in the lower table basket 17 are disposed at the bottom of the cleaning tank 2. Further, in order to clean the tableware 19 accommodated in the upper tableware basket 18, a fixed nozzle 20 is provided as a cleaning nozzle on the rear wall surface in the cleaning tank 2, and the upper tableware basket is connected from the fixed nozzle 20 through the water conduit 21. The cleaning liquid is sprayed from a rotary upper cleaning nozzle 22 disposed below the rotary 18.

  46 is a cleaning pump for sending cleaning water to the first rotary cleaning nozzle 37, the second rotary nozzle 38, the fixed nozzle 20 and the upper cleaning nozzle 22, and 39 is the first rotary cleaning nozzle 37, second pump This is a water distribution means for selectively supplying cleaning water to each of the rotating nozzle 38, the fixed nozzle 20 and the upper cleaning nozzle 22.

  The fixed nozzle 20 is arranged at the substantially right and left center of the rear wall surface in the washing tub 2, and includes a vertical portion 20a provided from the bottom of the washing tub 2 to the vicinity of the top surface of the washing tub 2, and a dishwasher from the middle of the vertical portion 20a. A horizontal portion 20b that extends horizontally to the right when viewed from the front of the tube, and a portion that extends from the middle of the vertical portion 20a to the left side, is connected to the water conduit 21, and guides the cleaning water to the upper cleaning nozzle 22. And a water channel 20c.

  The horizontal portion 20b of the fixed nozzle 20 is provided with a plurality of injection ports 20d for injecting cleaning water from the rear side toward the tableware 7 accommodated in the lower table basket 17, and at the top of the vertical portion 20a, a fan shape from above. Is provided with an injection port 20e for injecting cleaning water.

  In addition, the horizontal portion 20b and the injection port 20d extending from the fixed nozzle 20 in the right direction, the water conduit 20c, the water conduit 21, the upper cleaning nozzle 22 and the upper cleaning nozzle 22 extending in the left direction are supplied with cleaning water. The height relationship with the injection port 22a to be injected is such that the horizontal portion 20b and the injection port 20d are positioned above when the upper cleaning nozzle 22 is in a horizontal state.

  As shown in FIGS. 2 and 4, the water guide pipe 21 that rotatably supports the upper cleaning nozzle 22 at the distal end is located above the substantially horizontal state at the connection portion 23 of the fixed nozzle 20 near the rear wall surface of the cleaning tank 2. It is pivotally supported so that it can be tilted and can be folded upward. With this configuration, the upper cleaning nozzle 22 is movable between the lower side of the upper table basket 18 and the vicinity of one inner surface of the cleaning tank 2.

  When the user accommodates and cleans a large tableware 24 that hits the upper cleaning nozzle 22 in the cleaning tub 2, as shown in FIGS. 2 and 3, the upper table basket 18 is removed, and the water conduit 21 is connected. By folding upward at the connection portion 23 of the fixed nozzle 20 and moving the upper cleaning nozzle 22 to a state along the rear wall surface of the cleaning tank 2, the inner space of the cleaning tank 2 is utilized to the maximum, The large tableware 24 can be easily accommodated in the tableware basket 17.

  In the present embodiment, the upper cleaning nozzle 22 is rotated upward rather than downward so as to be moved along the rear wall surface of the cleaning tank 2, so that the tableware 7 is placed at the rear of the lower tableware basket 17. The upper cleaning nozzle 22 can be rotated and retracted without hindrance even if it is accommodated first.

  The connecting portion 23 between the water conduit 21 and the fixed nozzle 20 is configured as shown in FIGS. 4, 5, and 6. The upper cleaning nozzle 22 has a rotation shaft portion 22b at the center lower portion, is fitted with a bearing portion 25 provided at the tip of the water conduit 21, and is rotatably supported at this portion. The rotating shaft portion 22b and the bearing portion 25 are both formed hollow, and in a fitted state, the cleaning water from the fixed nozzle 20 is sent to the upper cleaning nozzle 22 through the water conduit 21. Then, when the water conduit 21 is tilted around the connection portion 23 of the fixed nozzle 20 and is positioned substantially in the horizontal direction, the water guide tube 21 is accommodated in the upper table basket 18 through a plurality of injection ports 22 a provided on the upper surface of the upper cleaning nozzle 22. Washing water is sprayed toward the tableware 19.

  A shaft portion 26 formed hollow so that washing water can pass therethrough is provided at the base portion of the water guide tube 21, and the water guide tube 21 extends vertically with respect to the bearing portion 27 provided in the connection portion 23 of the fixed nozzle 20. It is pivotably fitted so that it can tilt. The shaft portion 26 is provided so that its central axis is substantially perpendicular to the central axis of the water guide portion 21 a of the water guide pipe 21. The bearing portion 27 has a notch 28 in which a cylindrical outer shell is partially cut out, and the water guide pipe 21 can tilt in the vertical direction within the range of the notch 28.

  That is, when the water guide tube 21 is rotated downward and the outer peripheral portion of the water guide portion 21a comes into contact with the lower end of the notch 28 of the bearing portion 27, further downward rotation of the water guide tube 21 is restricted, and this state Thus, the upper cleaning nozzle 22 and the water conduit 21 are in a substantially horizontal state. Further, when the water guide tube 21 is rotated upward and the outer peripheral portion of the water guide portion 21a comes into contact with the upper end of the notch 28 of the bearing portion 27, further upward rotation of the water guide tube 21 is restricted. Thus, the water guide pipe 21 is in a substantially vertical state, and the upper cleaning nozzle 22 is folded so as to be close to the rear wall surface of the cleaning tank 2.

  The shaft portion 26 at the base portion of the water guide pipe 21 is provided with a groove 29. Even if the O-ring 30 for cleaning water sealing is fitted in the groove 29 and the water guide tube 21 is rotated, the shaft portion 26 is provided. It is comprised so that the watertightness between the outer peripheral surface of this and the inner peripheral surface of the bearing part 27 can be maintained.

  Further, when the water guide pipe 21 and the upper cleaning nozzle 22 are folded in a state of being close to each other along the rear wall surface of the cleaning tank 2 in a substantially vertical state due to the frictional force by the O-ring 30, the front pipe 21 and the upper cleaning nozzle 22 do not fall forward. It is possible to hold it in an independent state.

  In addition to this, as a method of holding the water conduit 21 and the upper cleaning nozzle 22 in a substantially vertical self-standing state, it is not shown between the outer periphery of the water conduit 21 and the side surface of the notch 28 of the bearing portion 27. A method of locking with the structure of the protrusion and the groove, a method of locking the water guide tube 21 or the upper cleaning nozzle 22 directly or indirectly to the rear side surface of the cleaning tank 2 can be implemented.

  FIG. 7 is a partial cross-sectional view showing a connection portion between the water conduit 21 and the fixed nozzle 20 of the dishwasher. As shown in FIG. 7, a blocking wall is provided on one end surface of the shaft portion 26 at the root of the water conduit 21. 31 are respectively provided in the bearing portion 27 provided in the connection portion 23 of the fixed nozzle 20, and a partition wall 32 substantially orthogonal to the central axis is provided.

  FIG. 8 is a side view of the blocking wall 31 and the partition wall 32. As shown in FIG. 8, the blocking wall 31 of the water conduit 21 has two closed portions 33 and two openings 34 every 90 degrees. Similarly, the partition wall 32 of the fixed nozzle 20 also has two closed portions 35 and two openings 36 every 90 degrees. Note that the end surface of the shaft portion 26 on the side opposite to the side where the blocking wall 31 is provided is closed.

  The groove 29 and the O-ring 30 are provided on the outer peripheral surface of the shaft portion 26 on the blocking wall 31 side. The operation and action of the dishwasher in the present embodiment configured as described above will be described.

  Normally, the water conduit 21 is held in a substantially horizontal state. At this time, the partition wall 32 of the fixed nozzle 20 and the blocking wall 31 of the water conduit 21 are formed with an opening 36 and an opening as shown in FIG. 34, the cleaning water sent from the fixed nozzle 20 passes through the opening 36 of the partition wall 32, passes through the opening 34 of the opposing blocking wall 31, and is guided. It is guided from the water pipe 21 to the upper cleaning nozzle 22 and sprayed from the injection port 22 a of the rotating upper cleaning nozzle 22 toward the tableware 19 accommodated in the upper tableware basket 18 to clean the tableware 19.

  When the user wants to wash large dishes such as the upper cleaning nozzle 22 or the water guide pipe 21, the water guide pipe 21 is rotated approximately 90 degrees upward about the shaft portion 26, so that the cleaning tank 2. Fold it near the back. Thereby, the tableware 19 having such a size as to hit the upper cleaning nozzle 22 and the water conduit 21 can be easily accommodated in the lower table basket 17 and can be cleaned.

  At this time, since the water conduit 21 is rotated approximately 90 degrees around the shaft portion 26, the water conduit 21 can be self-supported by the frictional force of the O-ring 30. At this time, as shown in FIG. 8B, the opening 36 of the partition wall 32 and the blocking portion 35 of the blocking wall 31 are opposed to each other, so that the cleaning water is not supplied to the water conduit 21. Accordingly, the cleaning water is not unnecessarily ejected from the folded upper cleaning nozzle 22. That is, the blocking mechanism 31 of the water conduit 21 and the partition wall 32 of the fixed nozzle 20 form a valve mechanism.

  The water distribution means 39 for selectively supplying the cleaning water to a plurality of nozzles including the first rotating cleaning nozzle 37, the second rotating nozzle 38, the fixed nozzle 20 and the upper cleaning nozzle 22 is a configuration of the present embodiment. In the case where the cleaning water is selectively fed to the four nozzles as shown in FIG.

  FIG. 9 schematically shows an example of the configuration of the water distribution means 39, and one water supply opening on the peripheral surface of the cylindrical water distribution valve 40 to which the cleaning water is supplied from the cleaning pump 46 to the center. 41 is opened, and a water supply pipe 42 piped to the fixed nozzle 20 and the upper-stage washing nozzle 22 in a clockwise 45 degree direction with the upper side of the paper as 0 degree is piped to the second rotary washing nozzle 38 in the 135 degree direction. The water supply pipe 43 connected to the first rotary cleaning nozzle 37 in the 225 degree direction is connected to the first rotary cleaning nozzle 37 and the second rotary cleaning nozzle 38 in the 315 degree direction. The pipes 45 are respectively arranged so as to face the peripheral surface of the water diversion valve 40.

  When the diversion valve 40 is rotated every 90 degrees by a driving means (not shown) and rotated to the angular position shown in FIG. 9A, the water supply opening 41 opens in the direction of the water supply pipe 44. The cleaning water supplied from the cleaning pump 46 into the diversion valve 40 is supplied to the first rotary cleaning nozzle 37. Further, when the water diversion valve 40 is rotated to the angular position shown in FIG. 9B, the water supply opening 41 opens in the direction of the water supply pipe 43, so that it is supplied from the washing pump 46 into the diversion valve 40. The cleaning water is supplied to the second rotary cleaning nozzle 38. Further, when the water diversion valve 40 is rotated to the angular position shown in FIG. 9C, the water supply opening 41 opens in the direction of the water supply pipe 42, so that both the fixed nozzle 20 and the upper cleaning nozzle 22 have cleaning water. Will be sent. When the water diversion valve 40 is rotated to the angular position shown in FIG. 9D, the water supply opening 41 opens in the direction of the water supply pipe 45, and the first rotary cleaning nozzle 37 and the second rotary cleaning nozzle. Wash water is fed to both 38.

  By configuring the water distribution means 39 as described above, the state in which the cleaning water is supplied only to the first rotary cleaning nozzle 37, the state in which the cleaning water is supplied only to the second rotary cleaning nozzle 38, The state is sequentially switched between a state in which cleaning water is supplied to both the fixed nozzle 20 and the upper cleaning nozzle 22, and a state in which cleaning water is supplied to both the first rotary cleaning nozzle 37 and the second rotary cleaning nozzle 38. be able to.

  In this way, by selectively supplying the cleaning water to the plurality of nozzles, the amount of water supplied in the cleaning tank 2 is smaller than when the cleaning water is simultaneously supplied to all of the plurality of nozzles. It is possible to solve problems such as an increase in power consumption and an increase in size due to an increase in the amount of water used and the increase in temperature rise time.

  In the present embodiment, an upper two-stage dishwasher having a lower table basket 17 and an upper table basket 18 provided in the washing tub 2 is taken as an example, and a rotary upper stage cleaning is provided below the upper table basket 18. Although the nozzle 22 is arranged, even when it is constituted by a tableware basket having an upper limit of three or more stages, the same effect can be obtained if a washing nozzle having the same configuration is arranged below the tableware basket other than the lowermost stage. In addition, a certain effect can be obtained even if the cleaning nozzle is not a rotary type but a fixed type that does not rotate.

  As described above, the dishwasher according to the present invention is a dishwasher having a plurality of tableware baskets, and can effectively use a washing tub widely with a simple configuration. Since it can be used, it is easy to use, has high cleaning efficiency and is excellent in energy saving, and can be widely applied to various household dishwashers.

Side sectional view of the dishwasher according to Embodiment 1 of the present invention. Side sectional view showing a state in which the upper washing nozzle for the dishwasher is folded Front view of the dishwasher with the front opening lid removed and the upper cleaning nozzle folded The perspective view which shows the washing nozzle for the upper stage of the dishwasher, and its attachment part Exploded perspective view showing the structure of the upper washing nozzle for the dishwasher The perspective view which shows the state when the upper washing nozzle for the dishwasher is folded Partial sectional view showing the connection part of the water conduit and fixed nozzle of the dishwasher (A), (b) Side view of the barrier wall of the water conduit of the dishwasher and the partition wall of the fixed nozzle (A)-(d) Explanatory drawing which shows the structural example of the water distribution means of the dishwasher, and its operation | movement. Side view of a conventional dishwasher Front view of the dishwasher with the front opening lid removed

Explanation of symbols

1 Dishwasher 2 Washing tank 17 Lower tableware basket (tableware basket)
18 Upper tableware basket (tableware basket)
19 Tableware 20 Fixed nozzle (cleaning nozzle)
20c Water guide channel 21 Water guide tube 22 Upper cleaning nozzle (movable cleaning nozzle)
23 Connecting part 26 Shaft part 27 Bearing part 31 Shut-off wall (valve mechanism)
32 Bulkhead (valve mechanism)
37 First rotary cleaning nozzle (cleaning nozzle)
38 Second rotary cleaning nozzle (cleaning nozzle)
46 Washing pump

Claims (5)

A washing tank, a plurality of upper and lower tableware provided in the washing tank, and a plurality of washing nozzles for injecting washing water for washing the dishes, and washing water to the plurality of washing nozzles A cleaning pump for pumping, and at least one of the plurality of cleaning nozzles is disposed between a lower part of the tableware basket other than the lowermost tableware basket among the plurality of tableware baskets and the vicinity of one inner surface of the cleaning tank. The dishwasher is provided such that the washing water is not supplied to the washing nozzle when the movable washing nozzle is moved to the vicinity of one inner surface of the washing tank. A water conduit connected to a movable movable cleaning nozzle, a water conduit that is provided on an inner surface of the cleaning tank and that sends cleaning water to the water conduit, and a connecting portion that connects the water conduit and the water conduit, 2. The dishwasher according to claim 1, wherein the connection portion supports the water guide pipe so as to be tiltable, and has a valve mechanism that opens and closes in conjunction with a tilting operation of the water guide pipe. The dishwasher according to claim 2, wherein a fixed washing nozzle communicating with the water conduit is provided on an inner surface of the washing tank. A lower cleaning nozzle is provided at the bottom of the cleaning tank, and a water diversion means is provided for selectively supplying the cleaning water from the cleaning pump to the movable cleaning nozzle, the fixed cleaning nozzle, and the lower cleaning nozzle. Item 4. A dishwasher according to Item 3. The dishwasher according to any one of claims 1 to 4, wherein the movable washing nozzle is a rotary washing nozzle.

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