JP2539289B2 - dishwasher - Google Patents

Description

TECHNICAL FIELD The present invention relates to a dishwasher for washing dishes.

[Prior Art] Cleaning water is pressurized by a circulation pump or the like, the cleaning water is sprayed from a plurality of spray holes provided in the nozzle, and the spray water sprays the cleaning water throughout the interior while rotating the nozzle. However, dishwashers for washing the dishes in the washing tank are well known.

An example of such a dishwasher is shown in FIG. In the figure, (1) is a cleaning tank having an opening (1a) on the entire surface, (2) is a bottom plate of the cleaning tank (1), (3) is provided on the bottom plate (2), and a circulation pump (5) described later is provided. (4) is cleaning water supplied to the cleaning tank (1), which is a filter including a net provided on the suction side of the cleaning tank. (5) is a circulation pump for pressurizing the wash water (4) and spraying it from an injection hole provided in a nozzle described later to wash dishes, (6) is its suction pipe, and (7) is a discharge pipe. is there. (8) is a discharge pipe (7)
The lower nozzle having a plurality of injection holes (9) rotatably attached to the nozzle sprays the cleaning water (4) pressurized by the circulation pump (5) and rotates by the spray reaction force.

The lower basket (10) corresponds to the lower nozzle (8) and can be freely taken in and out from the opening (1a), and mainly stores dishes (16), (16a), (16b) of different sizes. (11) is an extension pipe connected to the discharge pipe (7), which mainly houses the bowl (17) and the cup (18) and is rotatably attached to the upper basket (15) which can be freely taken in and out from the opening (1a). It is for supplying water to the upper nozzle (13) having a plurality of injection holes (14) provided, and a circulation pump ( Pressure water is sent from 5). Reference numeral (20) is a door whose one end is axially fixed to the opening (1a) of the cleaning tank (1).

In the dishwasher as described above, a lower basket (10) containing mainly dirty dishes (16), (16a), (16b) of different sizes and a bowl (17) and cups (18) are stored. Then, the upper basket (15) is housed in the cleaning tank (1) through the opening (1a), the power is turned on to supply water, and then the cleaning water (4) is heated by a heater (not shown), and the circulation pump ( 5) is driven to suck up the cleaning water (4) and pressurize it. The pressurized cleaning water (4) is vigorously jetted from the jet holes (9) and (14) provided in the nozzles (8) and (13), and the jet pressure causes the jet nozzles (8) and (13) to flow. ) Rotates while spraying the cleaning water (4) from the spray holes (9) and (14). This allows
Tableware (1) stored in the lower basket (10) and the upper basket (15)
6), (16a), (16b) and (17), (18) can be sprayed with the cleaning water (4) evenly, and this spray stains the dishes (16)-(18) Can be washed away. Wash water (4) sprayed on tableware (16)-(18)
Is circulated by the circulation pump (5) through the filter (3).

In the dishwasher as described above, in order to efficiently wash the dishes (16) to (18), it is necessary to effectively spray the washing water (4) onto the dirty surface, and as many dishes as possible In order to efficiently wash the items (16) to (18), the tableware items (16) to (18) are arranged at intervals and the washing water (4) is sprayed directly from below onto the dirty surface. It is necessary to let For this reason, the baskets for storing the dishes (16) to (18) have two stages of the lower basket (10) and the upper basket (15), and the nozzle for injecting the cleaning water (4) also has the lower nozzle (8) and the upper nozzle. By connecting both nozzles (8) and (13), which are composed of the nozzle (13) and are arranged under the respective cages (10) and (15), by the discharge pipe (7) and the extension pipe (11), respectively. The structure is such that the cleaning water (4) is sprayed from the bottom of each basket (10), (15).

FIG. 5 (b) shows the lower cage (1
0) Plates of different sizes stored in (16) to (16b)
In a front view showing how the cleaning water (4) is sprayed, as is clear from the figure, each dish (16) to (16b)
Are arranged side by side with their lower ends aligned, so that the spray water (4) is applied to each dish (16) to (16b) through the gap between each dish (16) to (16b). .

[Problems to be Solved by the Invention] Since the conventional dishwasher is configured as described above, when the lower basket (10) is stored in or pulled out from the cleaning tank (1), the extension pipe (11) is used. To avoid the lower basket (1
It is necessary to provide a notch in which the tablewares (16) to (18) cannot be arranged in 0), which causes a problem that a large number of the tablewares (16) to (18) cannot be stored.

Further, the water supply port (12) of the upper nozzle (13) and the extension pipe (1
Since a structural gap g must be provided between the opening of 1), if the position shifts or the gap g becomes large, the cleaning water (4) leaks from between them and the circulation pump The washing water (4) from (5) is not sufficiently supplied to the upper nozzle (13) side, and the tableware (17), (1 in the upper basket (15)
There was a problem that 8) could not be washed well.

The present invention has been made to solve the above problems,
It is an object of the present invention to provide a dishwasher which has high cleaning efficiency, can store and wash a large number of dishes, and can sufficiently supply the washing water to the upper nozzle.

[Means for Solving the Problems] A dishwasher according to the present invention is provided with an upper car and a lower car that store dishes and is housed in a cleaning tank, and the upper car and the lower car, respectively. In a dishwasher equipped with an upper nozzle and a lower nozzle that rotate while washing water is sprayed to wash dishes, an upper nozzle that has a water supply pipe and is rotatably attached to an upper car, and one end is a discharge pipe. A branched water supply pipe connected to the water supply port fixed to the outer wall of the cleaning tank with the other end passing through the outside of the cleaning tank and facing the water supply pipe of the upper nozzle. A door having an engaging portion for engaging with the cleaning tank and further provided with a pressing piece on the back surface corresponding to the upper car.

[Operation] When tableware is stored in the upper and lower baskets and stored in the washing tank and the door is closed, the pressing piece of the door pushes in the upper car and connects the water supply pipe to the discharge pipe. As a result, the cleaning water pumped from the discharge pipe through the water supply branch pipe is ejected from the upper nozzle,
Wash the dishes in the upper basket.

[Embodiment of the Invention] FIG. 1 is a longitudinal sectional view of an embodiment of the present invention. The sixth
The same or corresponding parts as those of the conventional example described in the figure are designated by the same reference numerals, and the description thereof will be omitted. In the figure, (10) is a lower basket, and in the present embodiment, the bottom portion is formed in a stepped shape, and the dishes (16) to (16b) are supported by columns (not shown) tilted at 5 to 30 degrees. The lower basket (10) is stored in order from the deep part to the large plate, and the upper ends of the plates (16) to (16b) are arranged at substantially the same height. The lower car slides along lower guide plates (not shown) provided on both side walls of the cleaning tank (1) so that it can be taken in and out through the opening (1a). (20) is a washing tank (1)
The door (1a) is openably and closably attached by a hinge (21), and the upper end is provided with a latch (22) that is coupled to the cleaning tank (1). ), An L-shaped pressing piece (23) is provided.

Reference numeral (24) is a branch water supply pipe corresponding to the extension pipe (11) for supplying the washing water (4) to the upper nozzle (13) described in the conventional example of FIG. 6, and one end thereof is connected to the discharge pipe (7). After being connected and extending along the outer wall outside the cleaning tank (1), the other end is connected to a discharge port (25) provided on the rear wall of the cleaning tank (1). (13) has an injection nozzle (14) and is an upper nozzle rotatably attached to the upper car (15) below the upper car (15), and (28) is a holder (26) and a fixture. Upper nozzle (1) attached to upper basket (15) by (27)
The water supply pipe 3) and (29) are water supply ports provided at the end of the water supply pipe (28) so as to face the discharge port (25). The upper basket (15), together with the upper nozzle (13) and the water supply pipe (28), has an opening (1) along the upper guide plates provided on both side walls of the cleaning tank (1).
It is configured so that it can be taken in and out from a).

Next, the operation of this embodiment will be described. First, dishes (16) to (16b) of different sizes are sequentially arranged side by side, for example, at an angle of 5 to 30 degrees in a lower car (10) having a stepped bottom.
Further, the upper basket (15) stores the bowl (17), the cup (18) and the like, which are housed in the cleaning tank (1) respectively, and the door (20) is closed and locked by the latch (22). At this time, the door (2
The pressing piece (23) provided in (0) presses the upper car (15) backward, and connects the discharge port (25) and the water supply port (29) of the water supply pipe (28) to form a series of water channels. (See Figure 3).

Then, the power is turned on to supply the cleaning water (4) into the cleaning tank (1) from a water supply device (not shown). When a certain amount of water is supplied, a heater (not shown) is energized to heat the cleaning water (4), and the circulation pump (5) is driven to suck up the cleaning water (4) and pressurize it. The pressurized cleaning water (4) is supplied to the lower nozzle (8) through the discharge pipe (7), and is directed from the plurality of injection holes (9) toward the dirty surface of the dishes (16) to (16b). Is jetted. The jet pressure causes the lower nozzle (8) to rotate horizontally while jetting the washing water (4) to wash the dishes (16) to (16b).

On the other hand, part of the cleaning water (4) in the discharge pipe (7) passes through the branch water supply pipe (24), the discharge port (25), the water supply port (29), and the water supply pipe (28), and then the upper nozzle (13). Is supplied to the upper nozzle (1
3) rotates while spraying the cleaning water (4) from the spray hole (14) to clean dirt such as the bowl (17) and the cup (18) in the upper basket (15). It should be noted that at least one of the plurality of injection holes (9) and (14) provided in the lower nozzle (8) and the upper nozzle (13) has smooth rotation of the lower nozzle (8) and the upper nozzle (13), respectively. It is provided in a predetermined direction in order to be performed.

In the present invention configured as described above, as shown in FIG. 5 (a), the dishes (16), (16
Since a) and (16b) are housed in the lower basket (10) so that their upper ends are located at substantially the same position and the washing water injection inlet area from the lower nozzle (8) is large, the lower nozzle (8) Since the cleaning water (4) from the injection hole (9) directly contacts the dirty surface of the dish, the cleaning efficiency can be improved and the spacing between the dishes can be narrowed as compared with the conventional case.

FIG. 2 shows another embodiment of the present invention. In this embodiment, the lower nozzle (8) is set to θ with respect to the horizontal plane in accordance with the shape of the bottom portion of the lower car (10). Then from 5 degrees
It is arranged at an angle of 30 degrees), and with this structure, the dish cleaning efficiency can be further improved.

FIG. 3 shows still another embodiment of the present invention. In this embodiment, the bottom part of the lower car (10) is inclined to one side (5 to 30 degrees in the embodiment), and The nozzle (8) is arranged substantially parallel to this bottom.

Furthermore, FIG. 4 shows another embodiment of the present invention.
In the present embodiment, the bottom portion of the car (10) is formed in a substantially mountain shape so that the center portion is shallow and the periphery is inclined and becomes deep, and the lower nozzle (8) is formed from the center portion to the periphery by α.
The cleaning water (4) is sprayed at a right angle to the inclination angle α.

In this embodiment, a small dish (16) is arranged in the center of the lower basket (10), and large dishes (16) and (16b) are arranged around it in a substantially vertical manner, and the injection holes of the nozzle (8) are arranged. Since the cleaning water (4) is rotated while being sprayed from (9), the cleaning water (4) is directly sprayed on the dirty surface of the dish, and the dirt can be efficiently cleaned.

[Effects of the Invention] A dishwasher according to the present invention is disposed below an upper car and a lower car that store dishes and is housed in a cleaning tank, and below the upper car and the lower car. In the dishwasher equipped with an upper nozzle and a lower nozzle that rotate while washing the dishes, one end is connected to a discharge pipe, passes through the outside of the washing tank, and the other end is fixed to the outer wall of the washing tank. By connecting a branch water supply pipe and closing the door, the water supply pipe of the upper nozzle attached to the upper car was connected to the discharge port to supply washing water to the upper nozzle, so the extension pipe is passed through the lower car. It is not necessary to provide a cutout portion for storing a large amount of tableware. Also, since the water supply pipe of the upper nozzle attached to the upper basket is connected to the water supply port by closing the door, the cleaning water does not leak and the necessary and sufficient cleaning water is supplied to the upper nozzle, and Goods can be washed well.

[Brief description of drawings]

1 to 3 are side cross-sectional views of an embodiment of the present invention, FIG. 4 is an explanatory view showing a main part of another embodiment of the present invention, and FIG. 5 (a) is an explanatory view of the operation of the present invention. , (B) are explanatory views of the operation of the conventional dishwasher, and FIG. 6 is a side sectional view of an example of the conventional dishwasher. In the figure, (1) is a cleaning tank, (1a) is an opening, and (3)
Is a filter, (4) is wash water, (5) is a circulation pump,
(7) is a discharge pipe, (8) is a lower nozzle, (9) and (14) are injection holes, (10) is a lower basket, (13) is an upper nozzle, (15) is an upper basket, (16), (16a) and (16b) are dishes, (20) is a door, (21) is a hinge, (22) is a latch, (23) is a pressing piece, (24) is a branch water supply pipe, (25) is a discharge port, (28) is a water supply pipe, and (29) is a water supply port. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. An upper car and a lower car for accommodating dishes and accommodating them in a washing tank, and these are disposed under the upper car and the lower car, respectively, and are rotated while spraying cleaning water to rotate the dishes. In a dishwasher with an upper nozzle and a lower nozzle for cleaning, an upper nozzle having a water supply pipe and rotatably attached to the upper basket, and one end of which is connected to a discharge pipe of the cleaning water, A branch water supply pipe that passes through the outside and has the other end facing the water supply pipe of the upper nozzle and connected to a discharge port fixed to the outer wall of the cleaning tank, and the lower portion is rotatably fixed to the opening of the cleaning tank. A dishwasher comprising: an upper portion having a locking portion for locking the cleaning tank, and a back surface provided with a door having a pressing piece corresponding to the upper car.