JP2510610Y2 - Dishwasher - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher, and more particularly, it has a lower jet rotating nozzle at the lower part of the washing chamber and an upper jet rotating nozzle at the upper part of the washing chamber. Equipped with a middle-stage jet rotating nozzle,
The present invention relates to a dishwasher in which water is supplied to each of the jet rotary nozzles from a water supply pump arranged below the cleaning chamber.

[0002]

2. Description of the Related Art A dishwasher of this type is disclosed in, for example, Japanese Patent Laid-Open No.
No. 9-103640. Therefore, in the dishwasher proposed in the above publication, the water supply from the water supply pump is guided from above to the upper injection rotary nozzle through a water supply pipe, and the water is supplied to the upper injection rotary nozzle. The middle-stage injection rotary nozzle is connected through a removable and removable connection pipe so that the water supply from the water supply pump is guided to the middle-stage injection rotary nozzle.

[0003]

The conventional dishwasher described above has the advantage that it can be easily cleaned by removing the upper injection rotary nozzle by removing the connection pipe, but the water supply from the water supply pump is used. Since the water is guided to the upper stage jetting rotary nozzle via the pipe and then to the middle stage jetting rotary nozzle via the connecting pipe, sufficient water supply may not be possible to the middle stage jetting rotary nozzle. Such a problem is that a jet rotating nozzle capable of jetting downward is adopted as the upper stage jetting rotary nozzle, and a jetting rotary nozzle capable of jetting upward and downward is adopted as the middle stage jetting rotary nozzle. This is especially a problem when it is necessary to supply water. Further, in the above-mentioned conventional dishwasher, since the water supply from the water supply pump is guided from above to the upper stage injection rotary nozzle via the water supply pipe, the water supply pipe is arranged above the upper stage injection rotary nozzle. Therefore, there is a case where a sufficient cleaning space between the upper stage jetting rotary nozzle and the middle stage jetting rotary nozzle cannot be secured by securing the space. The present invention has been made to address the above-mentioned problems, and to accurately supply the required amount of water to the middle-stage injection rotary nozzle without impairing the above-mentioned advantages, and to provide the upper-stage injection rotary nozzle and the middle-stage injection rotation nozzle. The purpose is to ensure a sufficient cleaning space between nozzles.

[0004]

In order to achieve the above-mentioned object, in the present invention, a lower injection rotary nozzle is provided in the lower part of the cleaning chamber and an upper injection rotary nozzle is provided in the upper part of the cleaning chamber. In order to form the washing chamber in a dishwasher in which a middle-stage jet rotating nozzle is provided between the jet rotating nozzles and water is supplied to each of the jet rotating nozzles from a water supply pump disposed below the washing chamber. The upper jet rotating nozzle and the middle jet rotating nozzle are assembled rotatably and rotatably at the upper end and the lower end of the connection pipe fixed to the wall at the upper end, and the cleaning chamber is provided at the intermediate portion of the connection pipe. To connect the water supply pipe supported by the rear wall to guide the water supply from the water supply pump through the water supply pipe, and as the connection pipe, A holder the upper injection rotary nozzle is secured to the top wall is suspended supporting is rotatably fitted,
The middle jet rotating nozzle is rotatably fitted and supported at the lower end.
A predetermined gap is formed between the upper end and the lower end of the holder.
Connect the intermediate branch to the tip of the water supply pipe
A T-shaped branch pipe which is, supporting also the said upper injection rotary nozzle from below at times upper watering coupling the assembled by both the lower end of the holder and the upper end of the T-shaped branch pipe When removed from the bottom edge of the holder
A connecting pipe provided with a connecting tube for releasing the above-mentioned space was adopted as the connecting pipe.

[0005]

In the dishwasher according to the present invention, the middle jet rotary nozzle and the upper jet rotary nozzle are connected by a connection pipe capable of supplying water, and a water supply pipe is connected to an intermediate portion of the connection pipe to supply water. Since the water supply from the pump is guided through the water supply pipe, the water supply supplied through the water supply pipe is divided into upper and lower parts by the connection pipe and supplied to the middle-stage injection rotary nozzle and the upper-stage injection rotary nozzle, respectively. Therefore, there is no useless head in the water supply passage to the middle-stage injection rotary nozzle, and the required amount of water can be accurately supplied to the middle-stage injection rotary nozzle without increasing the discharge capacity of the water supply pump.

Further, in the dishwasher according to the present invention, since the water supply pipe for guiding the water supply from the water supply pump is connected to the middle portion of the connecting pipe connecting the middle-stage injection rotary nozzle and the upper-stage injection rotary nozzle, the upper-stage injection Since the rotary nozzle can be arranged as high as possible, a sufficient cleaning space can be secured between the upper jet rotating nozzle and the middle jet rotating nozzle, and relatively large dishes can be stored in the washing space. A large amount of dishes can be washed at one time.

Further, in the dishwasher according to the present invention, the connecting cylinder forming the connecting pipe is removed from the lower end portion of the holder to release the support of the upper jet rotary nozzle from below by the connecting cylinder and to divide the T-shaped branch. If the predetermined interval formed between the upper end of the pipe and the lower end of the holder is released, the upper injection rotary nozzle can be easily removed or attached by itself through the opened predetermined interval. The jet rotary nozzle can be removed from the machine for easy cleaning.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a dishwasher according to the present invention. In this dishwasher, a washing chamber R is formed by a washing tank 11 having an opening at the front and a door 12 for opening and closing the opening. A lower jet rotation nozzle 21 is arranged in the lower part of the cleaning chamber R, and an upper jet rotation nozzle 22 is arranged in the upper part thereof.
A middle-stage injection rotary nozzle 23 is provided between the two,
Water is supplied to each of the jet rotary nozzles 21, 22, 23 from a water supply pump 30 arranged below the cleaning chamber R. The water supply pump 30 has a suction port 31 that is connected to a tank (not shown) that is integrally formed in the lower portion of the cleaning tank 11.
It has.

Further, in this dishwasher, a space between the lower jet rotating nozzle 21 and the middle jet rotating nozzle 23 serves as a lower washing space Ra in which the lower dish basket A is accommodated, and the middle jet rotating nozzle 23 and the upper jet rotating rotate. Between the nozzles 22 is an upper washing space Rb for accommodating the upper tableware basket B, so that large tableware (not shown) is stored in the lower tableware basket A, and small tableware (in the upper tableware basket B). (Not shown) is accommodated. The tableware baskets A and B are supported on both side walls of the cleaning tank 11 so that they can be inserted and removed in the front-rear direction.

The lower stage jet rotary nozzle 21 is a jet rotary nozzle capable of jetting upward, and is conventionally known to a nozzle bearing 41 integrally formed on the upper end of a branch pipe 40 attached to the center of the bottom wall 11c of the cleaning tank 11. Can be attached and removed by the method (specifically, the resin-made clip C is pulled out in the lateral direction, then the lower-stage injection rotary nozzle 21 is lifted upward and removed, and attached by the reverse operation) Water is supplied from the discharge port 32 of the water supply pump 30 that is attached and connected to the lower end of the branch pipe 40 to the branch pipe 4.
It is designed to rotate by one of the water supplies divided at 0.

On the other hand, the upper jet rotary nozzle 22 is a jet rotary nozzle capable of jetting downward, and is the upper wall 11a of the cleaning tank 11.
The upper end of the connecting pipe 50 attached at the center is water-supplyably and rotatably assembled, and the middle-stage jetting rotary nozzle 23 is a jetting rotary nozzle capable of jetting upward and downward, and the lower stage jetting is made at the lower end of the connecting pipe 50. Like the rotary nozzle 21, it is detachably mounted, water-supplyable, and rotatably mounted by a conventionally known method.
Is the other water supply that is split in the branch pipe 40 (this is
The amount of water supplied to the lower jet rotating nozzle 21 is about three times, and the lower water supply pipe 27, the water supply hose 26, and the upper water supply pipe 2
5 and water is supplied through the connecting pipe 50).

Each of the water supply pipes 25 and 27 is mounted so as to penetrate the rear wall 11b of the cleaning tank 11 in a liquid-tight manner, and is arranged substantially horizontally in the cleaning chamber R. The upper water supply pipe 25 has a middle stage. The jet rotary nozzle 23 is displaced by a predetermined amount and connected to an intermediate portion of the connection pipe 50, and the lower water supply pipe 27 is connected to an intermediate portion of the branch pipe 40. In order to avoid interference with the upper water supply pipe 25, the upper table basket B has a U-shaped escape B1 in plan view as shown in FIG.
Are formed.

Therefore, in this embodiment, as shown in FIGS. 1 and 3, the connecting pipe 50 is the upper wall 11a.
A holder 51 for the upper injection rotary nozzle 21 is rotatably fitted in fluid-tightly secured to it outer periphery is suspended supporting, the middle
The jet rotary nozzle 23 is rotatably fitted and supported at the lower end via a nozzle bearing 54, and has a predetermined space L between the upper end and the lower end of the holder 51 (the vertical direction of the central mounting portion of the upper jet rotary nozzle 21). (Slightly larger than dimension Lo)
And the middle branch is connected to the tip of the upper water supply pipe 25.
The T-shaped branch pipe 52 and the upper-stage injection rotary nozzle 22 at the upper end when they are assembled to the upper end of the T-shaped branch pipe 52 and the lower end of the holder 51 so that they can be supplied with water
4 is supported by the lower part of the holder 51 and is released from the lower end of the holder 51 as shown in FIG. A female screw 5 that is liquid-tightly engaged with the male screws 52a, 51a provided at the upper end of the holder 52 and the lower end of the holder 51.
3a is provided. The nozzle bearing 54 is liquid-tightly screwed to the lower end of the T-shaped branch pipe 52.
It is also possible to form it integrally with the lower end portion of the T-shaped branch pipe 52 for implementation.

Further, in this embodiment, a branch ridge 52b is provided inside the branch portion of the T-shaped branch pipe 52, and an outlet 52d below the inlet 52c of the T-shaped branch pipe 52 has a small diameter. In addition, the outlet 52e above the lower outlet 52d has a small diameter, and the outlet 5 below
The opening area of 2d is substantially equal to the total nozzle hole opening area of the middle-stage injection rotary nozzle 23, and the opening area of the upper outlet 52e is the total nozzle hole opening area of the upper-stage injection rotary nozzle 22 (the nozzle hole of the middle-stage injection rotary nozzle 23). (Approximately half of the total opening area)
And the opening area of the inflow port 52c is equal to
It is set to be approximately equal to the sum of the opening areas of 2d and 52e. The branch crest 52b is for smoothly dividing the feed water flowing into the inflow port 52c into the two outflow ports 52d, 52e at a predetermined ratio, and vertically dividing each of the outflow ports 52d, 52d.
Arc-shaped guide surfaces 52b ₁ and 5 whose radius is the diameter of 52e
2b ₂ and is displaced by a predetermined amount above the center line of the inflow port 52c.

In the present embodiment constructed as described above, the middle stage jet rotary nozzle 23 and the upper stage jet rotary nozzle 22 are arranged.
Is connected by a connection pipe 50 capable of supplying water, the upper water supply pipe 25 is connected to an intermediate portion of the connection pipe 50, and the water supply from the water supply pump 30 is guided through the upper water supply pipe 25. The supply water supplied through 25 is vertically divided by the connection pipe 50 and supplied to the middle-stage injection rotation nozzle 23 and the upper-stage injection rotation nozzle 22, respectively. Therefore, there is no useless head in the water supply passage to the middle-stage injection rotary nozzle 23, and the required amount of water can be accurately supplied to the middle-stage injection rotary nozzle 23 without increasing the discharge capacity of the water supply pump 30. Further, in the present embodiment, since the upper water supply pipe 25 is connected to the connection pipe 50 by displacing to the side of the middle-stage injection rotary nozzle 23 by a predetermined amount, the divided flow rate to the side of the middle-stage injection rotary nozzle 23 is changed to the upper-stage injection rotary nozzle. It can be increased compared to the divided flow rate to the 22 side, and the amount required for the middle stage injection rotary nozzle 22 (the amount larger than the amount required for the upper stage injection rotary nozzle 22) can be accurately supplied.

Further, in this embodiment, the upper water supply pipe 25 for guiding the water supply from the water supply pump 30 is connected to the intermediate portion of the connection pipe 50 connecting the middle-stage injection rotary nozzle 23 and the upper-stage injection rotary nozzle 22. The upper-stage injection rotary nozzle 22 can be arranged as high as possible, and the upper-stage injection rotary nozzle 22 and the middle-stage injection rotary nozzle 2 can be arranged.
It is possible to sufficiently secure the upper washing space Ra between the three, and it is possible to store a relatively large dish in the upper washing space Ra and wash a large number of dishes at once.

Further, in this embodiment, the connecting pipe 5
0 is a holder 51 and a T-shaped branch pipe 52 (nozzle bearing 54
(Including) and the connecting cylinder 53, the connecting cylinder 5
3 is manually rotated to remove it from the lower end portion of the holder 51, and as shown in FIG. 4, release the support from below of the upper injection rotary nozzle 22 by the connecting cylinder 53 and to make a T-shaped branch pipe. If the predetermined interval L formed between the upper end of 52 and the lower end of the holder 51 is released, the upper-stage injection rotary nozzle 22 can be easily removed or attached by itself through the released predetermined interval L. The upper jet rotary nozzle 22 can be removed outside the machine for easy cleaning.

In this embodiment, the connecting pipe 5
In the 0-shaped T-shaped branch pipe 52, a branch peak 52b is provided inside the branch portion so as to project above the center line of the inflow port 52c by a predetermined amount, and the opening area of the lower outflow port 52d is a middle-stage injection rotary nozzle. 23, the opening area of the upper outlet 52e is substantially equal to the total area of the nozzle hole opening of the upper jet rotary nozzle 22, and the opening area of the inlet 52c is both outlets 52d and 52e. Since it is set to be substantially equal to the sum of the opening areas of the two, the internal pressures of the both outlets 52d and 52e can be made substantially equal, and there is no pressure loss because the pipes are not expanded halfway, and the upper injection The rotary nozzle 22 and the middle-stage jet rotary nozzle 23
It is possible to appropriately divide the flow rates required by the nozzles 22 and 23 to supply water while applying a pressure substantially equal to.

In the above embodiment, as the connecting pipe of the connecting pipe, a female screw 53a which is liquid-tightly engaged with the male screws 52a, 51a provided at the upper end of the T-shaped branch pipe 52 and the lower end of the holder 51 is formed. Although the connecting cylinder 53 provided in the above is adopted, the connecting cylinder 153 of the connection pipe 150 shown in FIG. 5 may be adopted to implement the present invention. As shown in FIG. 6, the connecting cylinder 153 shown in FIG. 5 is configured to be expandable into a semi-cylindrical shape, and is integrally formed as a fastener (a band that is formed as a separate body can also be used) 153a. It is configured to be closed and fixed in a cylindrical shape by an annular groove 151a formed on the outer circumference of the lower end of the holder 151 and an annular groove formed on the outer circumference of the upper end of the T-shaped branch pipe 152 on the inner circumference of the upper end and the lower end. Annular projection 1 that fits in the groove 152a in a liquid-tight manner
53b and 153c are formed. The connecting cylinder 15
As shown in FIG. 6, the shape of the expanding and unifying surface in 3 may be a stepped shape or an uneven shape.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of a dishwasher according to the present invention.

2 is a plan view of the upper tableware basket shown in FIG. 1. FIG.

FIG. 3 is an enlarged cross-sectional view of a main part of FIG.

FIG. 4 is an exploded sectional view of FIG.

5 is an enlarged cross-sectional view of an essential part showing a modified example of the portion shown in FIG.

FIG. 6 is an exploded sectional view of FIG.

[Explanation of symbols]

11a ... upper wall, 11b ... rear wall, 21 ... lower stage injection rotary nozzle, 22 ... upper stage injection rotary nozzle, 23 ... middle stage injection rotary nozzle, 25 ... water supply pipe, 30 ... water supply pump, 50 ... connection pipe, 51 ... holder, 51a ... Male thread, 52 ... T-shaped branch pipe, 52a ... Male thread, 53 ... Connection tube, 53a ...
Female thread, 150 ... Connection pipe, 151 ... Holder, 152
... T-shaped branch pipe, 153 ... Connection tube, 153a ... Fastener, L ... Predetermined interval, R ... Washing room.

Claims (3)

(57) [Scope of utility model registration request] 1. A cleaning chamber comprising a lower jet rotating nozzle at a lower portion of the washing chamber, an upper jet rotating nozzle at an upper portion of the washing chamber, and an intermediate jet rotating nozzle between the two jet rotating nozzles. In a dishwasher configured to supply water to each of the jetting rotary nozzles from a water supply pump disposed below the connection pipe, the connection pipe fixed to the upper wall forming the cleaning chamber at the upper end has the upper end and the lower end. The upper-stage jetting rotary nozzle and the middle-stage jetting rotary nozzle are each rotatably assembled so as to be able to supply water, and a water supply pipe supported by a rear wall forming the cleaning chamber is connected to an intermediate portion of the connection pipe to connect the water supply pump. From the water is guided through the same water supply pipe, and as the connection pipe, the upper jet rotary nozzle is rotatably supported by being fixedly attached to the upper wall and suspended. The holder to be fitted and the middle jet
The injection rotary nozzle is rotatably fitted and supported on the lower end and
Make sure that a predetermined gap is formed between the lower ends of the holder.
A T-shaped branch pipe intermediate branch portion is connected to the distal end of the water supply pipe Te, when the water supply coupled to the upper end of both assembled to the lower end portion of the holder of the T-shaped branch pipe
The upper jet rotation nozzle is supported from below at the upper end , and when it is removed from the lower end of the holder,
A dishwasher characterized by adopting a connecting pipe provided with a connecting cylinder for releasing the gap . 2. As the connecting cylinder, a connecting cylinder having a female thread on the inner circumference and screwed into a male screw provided on the outer circumference of the upper end of the T-shaped branch pipe and the outer circumference of the lower end of the holder is adopted. The dishwasher of claim 1, wherein the dishwasher is a dishwasher. 3. The dishwasher according to claim 1, wherein the connecting cylinder is a connecting cylinder that is configured to be expanded in a semi-cylindrical shape and closed and fixed in a cylindrical shape by a fastener. .