JP3779549B2 - dishwasher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dishwasher used in a general household.
[0002]
[Prior art]
In the conventional dishwasher, as shown in Japanese Patent Laid-Open No. 7-327908, the front door is configured to be openable and closable with the lower end axis as the center. In addition, the conventional dishwasher is a system that opens and closes while rotating the door close to the floor surface. There is a burden.
[0003]
In addition, after taking out the dishwashing, when removing the leftover filter, pull out the cupboard placed on the slide rail to the front, take out the tableware, and take out the leftover filter at the bottom of the washing tank.
[0004]
This work was very inconvenient because the posture was lowered for taking in and out of the tableware, and after removing a lot of tableware and putting it in another place, the leftover filter was taken out for the first time.
[0005]
Further, as described in Japanese Patent Application Laid-Open No. 2000-139797, the drawer type dishwasher is improved so that it can be operated without lowering the posture when the tableware is put in and out. However, after removing the dish filter after washing the dishes, the dish filter on the bottom side of the washing tank could not be removed unless the washing tank was pulled out and the dishes removed and placed elsewhere. .
[0006]
This work was also very inconvenient, such as taking out a lot of tableware for taking in and out of the table and placing it in another place before taking out the leftovers filter.
[0007]
[Problems to be solved by the invention]
In consideration of the above-described various problems, the present invention provides a dishwasher with good operability for removing a leftover filter.
[0008]
[Means for Solving the Problems]
The present invention has a rotatable nozzle arm that injects cleaning water into the cleaning tank, and a partition plate that is positioned between the water reservoir and the cleaning tank and has a plurality of holes through which the cleaning water is passed. In the dishwasher, a dishwasher characterized in that a leftover filter that is detachably attached to the partition plate is disposed so as not to overlap the cupboard in the vertical direction.
[0009]
With such a configuration, since the cupboard and dishes are not covered on the upper side of the leftover filter, the leftover filter can be taken out without removing the dishes after washing the dishes. It is extremely easy to use.
[0010]
3 After cleaning the leftovers, the leftovers filter can be inserted and set with the dishes still set, so the dishwasher can be used effectively as a dish storage space.
[0011]
As described above, the present invention can provide a dishwasher that is very easy to use.
[0012]
Next, the outline of the present invention will be described more specifically before describing embodiments of the present invention.
[0013]
The present invention provides a washing tub for storing tableware, a cupboard provided in the washing tub and on which the tableware is placed, a water reservoir provided below the washing tub, and a bottom of the washing tub. A rotatable nozzle arm that sucks cleaning water in the water reservoir and sprays it into the cleaning tank, and a plurality of nozzle arms that are positioned between the water reservoir and the cleaning tank and that pass the cleaning water In the dishwasher having a partition plate in which holes are formed, the leftover filter provided in the partition plate so as to be detachable is arranged so as not to overlap the cupboard in the vertical direction, and the plurality of holes of the partition plate are The cleaning water injection amount per unit time injected from the nozzle arm is larger than the cleaning water passage amount per unit time passing through the hole of the partition plate.
[0014]
The holes in the partition plate are configured so that the amount of water sprayed per unit time of the nozzle arm is larger than the amount of water passing per unit time passing through the hole in the partition plate. When the pump and the nozzle arm are driven, a constant washing water layer is instantly formed on the partition plate. At this time, the water level under the partition plate (water level in the water reservoir) is lowered by an amount corresponding to the cleaning water injection amount of the nozzle arm.
[0015]
A fixed washing water layer formed on the partition plate generates a head pressure corresponding to the height.
[0016]
In this state, since the leftover filter is open to the water surface under the partition plate, the washing water layer having the head pressure flows toward the leftover filter and reaches the water surface under the partition plate. Loss water head pressure.
[0017]
The washing water that has reached the water surface under the partition plate is sprayed again through the washing pump and the nozzle arm, and after washing the dishes, along the top plate and the side wall of the washing tank, a certain amount of water is formed on the partition plate. Reach the washing water layer.
[0018]
During cleaning, circulation of the cleaning water is repeatedly maintained in a balance with the amount of cleaning water jetted from the nozzle arm, the amount of water passing through the holes in the partition plate, and the loss of the leftover filter.
[0019]
The basket for collecting leftovers of this leftover filter is formed of a punched metal plate with many holes including stainless steel plates, and the area ratio between the opening area of the holes and the area where the holes are not formed is The opening area is configured to be larger, and the influence on the circulation of the washing water is reduced.
[0020]
The wash water after washing the dishes contains a lot of leftovers. The leftovers move with the circulation of the washing water and are collected by a leftover filter in the middle of the washing water circulation.
[0021]
By configuring the size of the leftover filter to be equal to or less than the size of the hole in the partition plate, it is possible to collect and concentrate the leftovers in one place of the leftover filter during the circulation of the wash water. it can.
[0022]
By constructing the bottom of the leftover filter deeply to the position close to the bottom of the washing tank, it is possible to secure a large filter area for passing water and catching leftovers, so that the loss in the wash water circulation can be reduced. . In addition, a large collection capacity of leftovers can be secured.
[0023]
In addition, the method for collecting the leftovers effectively can be realized by always flowing the leftovers in the plug purified water layer having a constant water head pressure formed on the partition plate.
[0024]
Therefore, the washing operation pattern (washing pump operation pattern) of the dishwasher is set to a nozzle arm speed shift or an intermittent operation having an irregular cycle. In addition, a portion of the water sprayed from the nozzle arm is set horizontally or downward, and the turbulent washing water flow makes the leftovers unstable, allowing them to flow without stopping at a single location.
[0025]
By setting the handle of the leftover filter so as to extend to a position substantially above the center of the cupboard, it is easy to take out and install the leftover filter.
[0026]
The cleaning pump is driven by circulating the cleaning water in such a way that the rotation axis of the cleaning pump / nozzle arm and the motor is vertically concentric and the nozzle arm and the cleaning pump are positioned above the motor. The route is short and there is little flow loss.
[0027]
Although the present invention has been described by the above method, the cleaning pump / motor may be arranged at a position other than the center line of the nozzle arm with respect to the conventional nozzle arm.
[0028]
As described above, it is an object of the present invention to provide an easy-to-use dishwasher that effectively collects leftovers and can attach and detach a leftover filter while setting the dishes on the cupboard.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0030]
As shown in FIGS. 1 to 4, the cleaning tank 1 is configured to be drawable by a slide rail mechanism (not shown) built in the main body case 2. The cleaning tank 1 is shaped like a container whose periphery is surrounded by side walls and whose upper side is open.
[0031]
The tableware 3 is arranged on a cupboard 4 provided in the washing tank 1.
[0032]
As shown in FIG. 6, the cupboard 4 is provided with various items suitable for a bowl, a small plate, a middle plate or a large plate. The cupboard 4 for bowls is located on the left side of the washing tub 1 and is arranged to extend vertically from the front side to the back side. The cupboard 4 for small plates is placed side by side on the front side. The platter cupboard 4 is placed side by side behind the platter cupboard 4. The dish tray 4 for the middle dish is placed side by side next to the left end of the cupboard 4 for the platter somewhat later.
[0033]
These cupboards 4 may be separate or integrated. It is desirable to form it with something like a wire.
[0034]
A water supply valve 5 and a water supply hose 6 are provided in the back side of the cleaning tank 1 inside the main body case 2. The washing water for washing the tableware 3 is supplied to the washing tank 1 through the water supply valve 5 and the water supply hose 6.
[0035]
A brushless motor 8 (electric motor) having a permanent magnet rotor 7 is provided immediately below the bottom of the cleaning tank 1. An impeller of a cleaning pump 9 is attached to the rotating shaft of the brushless motor 8 on the cleaning tank 1 side.
[0036]
The nozzle arm 10 is rotatably provided in the cleaning tank 1. The nozzle arm 10 has a plurality of injection holes 11 for injecting cleaning water on the surface, and an opening 12 for cleaning liquid suction is provided at the center. A cleaning pump 9 is disposed in the opening 12 of the nozzle arm 10. A cleaning liquid guide 13 for introducing cleaning water to the cleaning pump 9 is disposed at an appropriate interval on the outer periphery of the cleaning pump 9, and the nozzle arm 10 is rotatably supported on the inner peripheral side portion of the cleaning liquid guide 13.
[0037]
The outer peripheral side of the cleaning liquid guide 13 extends so as to descend toward the bottom of a water reservoir 19 provided on the lower side of the cleaning tank 1. The lower end of the cleaning liquid guide 13 is a ring-shaped cleaning liquid suction opening 14, and the upper end is an opening 15 for discharging cleaning water. This opening 15 corresponds to the opening 12 of the nozzle arm 10.
[0038]
The cleaning liquid guide 13 is fixed to the cleaning tank 1 with screws 16. A drainage pump 17 is attached to the rotating shaft of the brushless motor 8 on the side opposite to where the cleaning pump 9 is located. A pump chamber 18 is provided around the drainage pump 17. The pump chamber 18 communicates with the water reservoir 19 and the water guide 20 of the cleaning tank 1 in the shortest distance. The drainage pump 17 has blades configured to function as a drainage pump when the cleaning pump 9 rotates in the direction opposite to the rotation direction that realizes the cleaning pump action.
[0039]
When the drain pump 17 functions as a drain pump, the cleaning liquid after cleaning in the cleaning tank 1 is drained from the drain hose 21 to the outside of the main body of the dishwasher.
[0040]
A water reservoir 19 is provided below the cleaning tank 1. A partition plate 23 provided inside the lower side of the cleaning tank 1 partitions the cleaning tank side and the water reservoir side. The rotatable nozzle arm 10 is positioned above the partition plate 23, and the brushless motor 8 is positioned below the partition plate 23.
[0041]
A plurality of holes 22 through which the cleaning water is passed are arranged in a ring shape in the partition plate 23. The nozzle arm 10 is placed immediately above the partition plate 22.
[0042]
The leftover filter 24 is detachably attached to the partition plate 23. The leftover filter 24 is attached so as to be fitted into an opening formed in the partition plate 23.
[0043]
The place where the leftover filter 24 is located is the inner front side of the cleaning tank 1 as shown in FIG. A space 25 formed between the front side wall of the cleaning tank 1 and the front end of the cupboard 4 is provided. An opening of the partition plate 23 to which the leftover filter 24 is attached is located at the space 25. And this space 25 is provided so that it may escape in the up-down direction. Therefore, the leftover filter 24 can be removed by pulling it upward while the washing tank 1 is pulled out from the main body case 2.
[0044]
That is, the place where the leftover filter 24 is placed is a space that is not overlapped so that the leftover filter 24 and the cupboard 4 overlap, and is a space that passes through the top. By pulling out from the main body case 2, regardless of whether there is tableware in the cupboard 4, it is possible to easily attach and remove the leftover filter 24 only by moving it up and down. Moreover, since the washing tank 1 is shaped like a container that is surrounded by a side wall and open on the upper side, it fits in and out of the leftover filter 24 (vertical direction).
[0045]
6 shows a configuration in which a plurality of cupboards 4 are separately formed and a space 25 in which a leftover filter 24 is placed is secured, but these cupboards 4 are integrally formed. The space where the leftover filter 24 is placed may be partially cut out to form a space. The space 25 in which the leftover filter 24 is placed can also be disposed on the side surface in the vicinity on the front side.
[0046]
The “start water level” shown in FIG. 3 is the level of cleaning water before operation. During operation, the water level drops considerably below this “start water level”.
[0047]
By the rotation of the brushless motor 8 and the cleaning pump 9, the cleaning liquid is sucked up from the vicinity of the deepest part of the cleaning tank 1 and guided to the opening 15 of the cleaning liquid guide 13 through the cleaning liquid guide 13. Further, the sucked-up cleaning water is guided to the injection hole 11 while being pressurized by the cleaning pump 9 from the opening 12 of the nozzle arm 10 along the casing 22 provided on the nozzle 11. Be injected.
[0048]
Since the washing water is pressurized in the nozzle arm 10, it is ejected from the plurality of ejection holes 11 at a high speed. The nozzle arm 10 rotates in a certain direction by a reaction when the cleaning liquid passes through the narrow casing 22 and a reaction when the cleaning liquid is ejected from the plurality of small ejection holes 11 at a high speed. The tableware 3 is well washed with washing water sprayed from the nozzle arm 10 with vigor.
[0049]
The washing water passes through the plurality of holes 22 formed in the partition plate 23 and returns to the water reservoir 19.
[0050]
The plurality of holes 22 are configured such that the amount of water sprayed per unit time of the nozzle arm 10 is larger than the amount of water passing per unit time passing through the holes 22 of the partition plate 23. Thus, when the power switch 26 of the dishwasher is turned on and the nozzle arm 10 is driven by the operation of the electric motor 8 and the washing pump 9, a constant water layer is immediately formed on the partition plate 23 as shown in FIG. . At this time, the water level is lowered by the amount of water below the partition plate 23 corresponding to the amount of water jetted from the nozzle arm 10. These are “the water level on the partition plate during the cleaning operation” and “the water level when the water level drops” shown in FIG.
[0051]
A constant water layer formed on the partition plate 23 generates a water head pressure corresponding to the height. In this state, since the leftover filter 24 is open to the water surface under the partition plate 23, the water layer having the water head pressure flows into the leftover filter 24 vigorously and flows under the partition plate 23. Reach the water surface and lose head pressure.
[0052]
The washing water that has reached the water surface under the partition plate 23 is again sprayed through the washing pump 9 and the nozzle arm 10, and after washing the tableware 3, the washing water descends again along the top plate 27 and the side wall 28 of the washing tank 1. A certain layer of water is reached on the plate 23.
[0053]
During washing, circulation of washing water determined by the balance between the amount of washing water jetted from the nozzle arm 10, the amount of water passing through the holes 22 of the partition plate 23 and the loss of the leftover filter 24 is repeated.
[0054]
During the washing water circulation, a portion where the residual vegetables are well collected is added to the residual filter 24.
[0055]
During operation, the water level in the water reservoir 19 is sufficiently lower than that of the partition plate 23, and the flow flowing into the water reservoir 19 from a fixed washing water layer formed on the partition plate 23 is Except for passing through the hole 22, everything is poured into the leftover filter 24, so that the leftovers are well collected.
[0056]
As shown in FIG. 5, the leftover filter 24 has a basket for collecting leftovers and a handle extending upward from the basket for collecting leftovers. The basket for collecting leftovers has a mesh that allows moisture to pass through and collects leftovers, and the size of the mesh is equal to or smaller than the size of the hole 22 of the partition plate 23.
[0057]
The basket for collecting leftovers of the leftover filter 24 is formed of a punching metal plate in which holes are formed in a stainless plate. The area where the holes are open is formed with a higher opening ratio than the area where the holes are not formed, and a punched metal plate or a mesh-like filter is used so that the cleaning water can be circulated well. ing.
[0058]
The size of the hole or mesh is about 1.3 to 1.5 mm in diameter. Further, the synthetic resin including the handle 29 is made of polypropylene resin. The hole may have a shape other than a circle.
[0059]
The wash water after washing the dishes contains a lot of leftovers. The leftovers move with the circulation of the wash water and are collected by the leftover filter 24 during the wash water circulation. By configuring the size of the left-hand side filter 24 to be equal to or less than the size of the hole 22 of the partition plate 23, the left-hand side of the left-hand side filter 24 is concentrated in one place of the left-hand side filter 24 in the course of washing water circulation. Can be collected.
[0060]
The bottom of the basket for collecting leftovers of the leftover filter 24 has a vertically long structure that is close to or reaches the bottom of the water reservoir 19, so that a large filter area (filtering area) can be secured and loss in the circulation of washing water. Can be reduced. In addition, a large collection capacity of leftovers can be secured.
[0061]
In addition, effective collection of leftovers can be realized by always flowing the leftovers in the water layer having a constant water head pressure formed on the partition plate 23. In order to realize this, the washing operation pattern of the dishwasher is changed in rotation speed of the nozzle arm 10 or intermittently with an irregular cycle. Alternatively, this can be realized by setting a part of the jet water of the nozzle arm 10 to be horizontal or downward, and making the leftovers unstable by the turbulent water flow and flowing without stopping at one place.
[0062]
The handle 29 of the leftover filter 24 is extended to a position above the center of the cupboard 4 (intermediate height of the washing tub 1), so that the hand is easy to reach and the leftover filter 24 is easily taken out and attached. Since the place where the leftover filter 24 is attached is a narrow space, a longer handle 29 is more suitable in terms of handling.
[0063]
The leftover filter 24 may be formed of a net member formed of a wire material including stainless steel or the like.
[0064]
Since the cleaning pump 9, the nozzle arm 10 and the electric motor 8 are arranged so that the rotational axes are concentric vertically and the nozzle arm 10 and the cleaning pump 9 are positioned above the electric motor 8, the circulation path of the cleaning water Is short and there is little circulation loss of washing water.
[0065]
The cleaning pump and the nozzle arm may be separated from the nozzle arm and arranged at a position other than the rotation axis of the nozzle arm.
[0066]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an easy-to-use dishwasher in which a leftover filter can be attached and detached while tableware is set on a cupboard.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an essential part of a dishwasher according to an embodiment of the present invention.
FIG. 2 is a plan view of a dishwasher according to an embodiment of the present invention.
FIG. 3 relates to an embodiment of the present invention, and shows a state before operation in an enlarged longitudinal sectional view of a main part of a dishwasher.
FIG. 4 relates to an embodiment of the present invention, and shows a state during operation in an enlarged vertical sectional view of a main part of a dishwasher.
FIG. 5 is a perspective view of a leftover filter according to an embodiment of the present invention.
FIG. 6 is a plan view of a leftover filter attached to a dishwasher, as viewed from above, according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Washing tank, 3 ... Tableware, 4 ... Cupboard, 9 ... Washing pump, 10 ... Nozzle arm, 22 ... Hole, 23 ... Partition plate, 24 ... Leftover filter, 25 ... Space.

Claims (15)

A container-shaped cleaning tank that is provided so as to be freely drawn out in the main body case, is surrounded by a side wall, and is open on the upper side;
A cupboard provided in the washing tank and on which tableware is placed;
A water reservoir provided below the washing tank;
A rotatable nozzle arm that is provided below the cleaning tank and sucks the cleaning water in the water reservoir and injects it into the cleaning tank;
A partition plate located between the water reservoir and the washing tank and having a plurality of holes through which washing water is passed;
A leftover filter for filtering the residue contained in the washing water,
Regardless of whether or not there is tableware in the cupboard, the leftover filter can be moved up and down to be attached and removed, and between the side wall located on the front side of the washing tank and the front end of the cupboard, A space is provided that allows the leftover filter and the cupboard to pass up and down without overlapping,
A dishwasher, wherein the partition plate is provided with an opening through which the leftover filter placed in the space is detachable . The dishwasher according to claim 1, wherein
The dishwashing machine, wherein the leftover filter has a basket part for collecting leftovers and a handle extending upward from the basket part for collecting leftovers. The dishwasher according to claim 1, wherein
The plurality of holes of the partition plate are configured such that a washing water injection amount per unit time injected from the nozzle arm is larger than a washing water passing amount per unit time passing through the hole of the partition plate. And dishwasher. The dishwasher according to claim 1, wherein
The dish filter is formed with a mesh that passes moisture and collects the residue, and the size of the mesh is equal to or less than the size of the hole of the partition plate. . The dishwasher according to claim 2,
The basket for collecting leftovers of the leftover filter has a depth that the bottom of the basket for collecting leftovers is close to the bottom of the water reservoir when the leftover filter is set on the partition plate. Dishwasher featuring. The dishwasher according to claim 2,
A dishwasher, wherein an upper part of a handle provided in the leftover filter is made higher than an intermediate height position of the washing tank. The dishwasher according to claim 2,
The basket for collecting leftovers of the leftover filter is formed of a punched metal plate having many holes including a stainless steel plate, and the area ratio between the opening area of the holes and the area where the holes are not formed is A dishwasher with a larger opening area. In the dishwasher as described in any one of Claim 1 to 6,
The dishwashing machine is characterized in that the leftover filter is composed of a net member formed of a wire material containing stainless steel or the like. A dishwasher according to any one of claims 1 to 8,
The nozzle arm can be selected from a variable speed operation and an intermittent operation in which the rotation of the nozzle arm is repeated. A dishwasher according to any one of claims 1 to 8,
A dishwasher characterized in that the direction of washing water sprayed from a rotatable nozzle arm for spraying is horizontal or downward. The dishwasher according to claim 1, wherein
A cleaning pump that sucks up the cleaning water accumulated in the water reservoir and pressurizes and supplies the nozzle arm with pressure is disposed in the center of the nozzle arm,
A dishwasher characterized in that an electric motor for rotationally driving the washing pump is provided below the washing pump, and the rotational axes of the electric motor and the washing pump are arranged concentrically. The dishwasher according to any one of claims 1 to 11,
A dishwasher comprising a plurality of the leftover filter. The dishwasher according to any one of claims 1 to 11,
The dishwashing machine is characterized in that the leftover filter is arranged on the right side. The dishwasher according to claim 1, wherein
The leftover filter is a punched metal plate with many holes, including stainless steel plate, and a basket for collecting leftovers made of synthetic resin, and a basket made of synthetic resin and above the basket for collecting leftovers. A dishwasher characterized in that it has a handle extending to the top. In the dishwasher as described in any one of Claim 1 to 6,
The leftover filter is formed of a synthetic resin, and a basket for collecting leftovers for collecting residue is formed of a synthetic resin, and a plurality of holes for draining water are provided in the basket for collecting leftovers. Dishwasher featuring.

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